СПОСОБ И УСТРОЙСТВО ДЛЯ ИСПОЛЬЗОВАНИЯ В СИСТЕМЕ СВЯЗИ

... 1. Способ, предназначенный для использования в системе связи, в которой удаленная станция осуществляет связь с базовой станцией через ретранслятор, соединенный с базовой станцией с использованием физической линии связи, заключающийся в том, что определяют требуемый размер окна поиска во времени, определяют максимальное значение задержки физической линии связи на основании требуемого размера окна поиска, определяют значение отношения значения задержки физической линии связи к длине физической линии связи и определяют допустимую длину физической линии связи на основании максимального значения физической линии связи и упомянутого значения отношения. 2. Способ по п.1, в котором при определении допустимой длины физической линии связи определяют максимальную длину физической линии связи, допустимую при требуемом размере окна поиска. 3. Способ по п.2, в котором при определении максимального значения задержки физической линии связи определяют значение первой задержки на распространение от базовой ...

Privates Funkkommunikationssystem unter Verwendung von optischen Glasfasern.

Spatial processing architecture for distributed antenna system

Processing interference due to non-linear productsin a wireless network

PROCEDURE FOR POINT FOR MULTIPOINT COMMUNICATION BY USE OF DIGITAL RADIO FREQUENCY TRANSMISSION

MOBILES COMMUNICATION NET AND APPROPRIATE SWITCH

Backhaul link with reference signal for distributed antenna system

A distributed antenna and backhaul system provide network connectivity for a small cell deployment. Rather than building new structures, and installing additional fiber and cable, embodiments described herein disclose using high-bandwidth, millimeter-wave communications. An overhead millimeter-wave system can be used to provide backhaul connectivity. Modules can be placed onto existing infrastructure, such as streetlights and utility poles, and the modules can contain base stations and antennas to transmit the millimeter-waves to and from other modules. Uplink and downlink signals (i.e., signals directed to/from a base station from/to acommunication node) can be spectrally divided into control channels, uplink/downlink spectral segments each including modulated signals which can be frequency converted to their original/native frequency band for enabling the communication nodes to communicate with one or more mobile or stationary devices, and pilot signals which can be supplied with some ...

Soft hand-off and routing data in a virtualized distributed antenna system

SOFT HAND-OFF AND ROUTING DATA INA VIRTUALIZED DISTRIBUTED ANTENNA SYSTEM In some embodiments of the invention, a system for managing resource use in a Distributed Antenna System is provided. The system may include: a plurality of Digital Remote Units (DRUs) configured to send and receive wireless radio signals; a plurality of sectors, each configured to send and receive wireless radio signals; and a plurality of inter-connected Digital Access Units (DAUs), each configured to communicate with at least one of the DRUs via optical signals, and each being coupled to at least one of the sectors.

SYSTEM AND METHOD FOR PERFORMANCE OPTIMIZATION IN AND THROUGH A DISTRIBUTED ANTENNA SYSTEM

Abstract A method for operating a DAS includes providing a set of digital remote units (remotes) operable to send and receive wireless radio signals. Each of the set of remotes is associated with a geographic area. The method also includes providing a digital access unit (host) operable to communicate with the set of remotes, receiving uplink signals at one or more of the set of remotes, and monitoring train activity in the geographic areas. The method further includes increasing a gain coefficient associated with one of the set of remotes in response to determining an increase in monitored train activity, decreasing a gain coefficient associated with another of the set of remotes in response to determining a decrease in monitored train activity, and transmitting, to the host, scaled uplink signals associated with the one of the set of remotes and the another of the set of remotes.

Data communications system

A method for point-to-multipoint communication using digital radio frequency transport

Hybrid picocell communication system

HYBRID BASE STATION AND RRH

Systems, methods and computer software are disclosed for providing base station and Remote Radio Head (RRH) functionality. In one embodiment, a method is disclosed, the method for providing base station and Remote Radio Head (RRH) functionality in a base station, comprising: providing a baseband card; providing a radio head, the radio head coupled to the baseband card by way of an interface; and switching, under the control of a processor, between use of the baseband card and use of an external baseband unit for controlling the radio head, the external baseband unit used via a Common Public Radio Interface (CPRI) port, thereby providing dual base station and remote radio head functionality.

METHOD AND APPARATUS FOR USE IN A COMMUNICATION SYSTEM

Apparatus and methods are disclosed for determining a tolerable propagation delay between a repeater and a base station in a communication system. In one embodiment, a tolerable length of fiber optic cable between a repeater and a base station is determined. More particularly, a desired search window size in time is determined. A maximum fiber optic cable delay value is determined based on the desired search window size. Also, a ratio value of fiber optic cable delay value to fiber optic cable length is then determined. The tolerable length of the fiber optic cable is then determined based on the maximum fiber optic cable delay value and the ratio value.

HYBRID PICOCELL COMMUNICATION SYSTEM

A free-space laser communication system. The system is comprised of a large number of picocells. Each picocell comprises a base station providing conventional communication with at least one user but typically several or many users. Each base station comprises at least two laser transceivers, each transceiver having a pointing mechanism for automatic alignment. These transceivers provide communication with other base stations, relay information between other base stations or transmit information to conventional communication systems. The picocells cover relatively small geographical ranges such as about 100 meters. Applicant has demonstrated that at these distances atmospheric effects attenuating laser beams are not a serious problem. In a preferred embodiment the base stations generally comprise four laser transceivers with micro processor controlled pointing equipment which are aligned automatically to point at other base stations and an RF transceiver to provide communication with users ...

MULTICHANNEL SOFTWARE DEFINED RADIO RECEIVER WITH OPTICALLY ISOLATED ADC

A high speed split receiver interface system for sensing a series of external signals, the system including: a series of remote radio head units for receiving a sensed signal in an analog electric form, each of the remote radio head units converting their sensed signal to a corresponding digital electrical form and then to a corresponding optical data form for dispatch over an optical data interconnection; at least one optical interconnect interconnecting each remote radio head unit with a baseband unit; a first baseband unit interconnecting the series of remote head units corresponding optical interconnects, and including a converter for conversion of the received optical signals to corresponding electrical digital form and down sampling the optical signals to corresponding down sampled signals, a memory store for storing the down sampled signals, and an external network interface for transmission of the saved signals to an external device.

SYSTEM AND METHODS FOR DISTRIBUTION OF HETEROGENEOUS WAVELENGTH MULTIPLEXED SIGNALS OVER OPTICAL ACCESS NETWORK

An optical network communication system includes an optical hub, an optical distribution center, at least one fiber segment, and at least two end users. The optical hub includes an intelligent configuration unit configured to monitor and multiplex at least two different optical signals into a single multiplexed heterogeneous signal. The optical distribution center is configured to individually separate the at least two different optical signals from the multiplexed heterogeneous signal. The at least one fiber segment connects the optical hub and the optical distribution center, and is configured to receive the multiplexed heterogeneous signal from the optical hub and distribute the multiplexed heterogeneous signal to the optical distribution center. The at least two end users each include a downstream receiver configured to receive one of the respective separated optical signals from the optical distribution center.

GUIDED-WAVE TRANSMISSION DEVICE WITH NON-FUNDAMENTAL MODE PROPAGATION AND METHODS FOR USE THEREWITH

Aspects of the subject disclosure may include, for example, a transmission device that includes a transmitter that generates a first electromagnetic wave to convey data. A coupler couples the first electromagnetic wave to a single wire transmission medium having an outer surface, to forming a second electromagnetic wave that is guided to propagate along the outer surface of the single wire transmission medium via at least one guided wave mode that includes an asymmetric or non-fundamental mode having a lower cutoff frequency. A carrier frequency of the second electromagnetic wave is selected to be within a limited range of the lower cutoff frequency, so that a majority of the electric field is concentrated within a distance from the outer surface that is less than half the largest cross sectional dimension of the single wire transmission medium, and/or to reduce propagation loss. Other embodiments are disclosed.

MOBILE COMMUNICATION SYSTEM

Method and apparatus for configuring a link group

Optical-wireless fusion communication system and optical-wireless fusion communication method

Method for reducing forward load in centralized radio access network (C-RAN)

Radio access system

POWER DISTRIBUTION DEVICES, SYSTEMS, AND METHODS FOR RADIO-OVER-FIBER (RoF) DISTRIBUTED COMMUNICATION

Power distribution devices, systems and methods for a Radio-over-Fiber (RoF) distributed communication system are disclosed. In one embodiment, an interconnect unit is coupled between a head-end unit and one or more remote units. The interconnect unit includes a plurality of optical communication links each configured to carry RoF signals to and from a head-end unit to remote units. The RF electrical signals from the head-end unit are converted to RF optical signals and communicated over the optical communication links in the interconnect unit to the remote units. The remote units convert the optical signals to electrical signals and communicate the electrical signals to client devices. To provide power to the remote units, the interconnect unit electrically couples power from at least one power supply to a plurality of power branches. Each power branch is configured to supply power to a remote unit connected to the interconnect unit.

DOCSIS COMPATIBLE PON ARCHITECTURE

In one embodiment, systems for transporting a signal between at least one control point and a user device, comprising a passive optical network operatively coupled to the at least one control point and an optical network termination operatively coupled to the passive optical network and operatively coupled to the user device, wherein the optical network termination comprises an upstream laser and an upstream laser driver coupled to the upstream laser and an upstream laser driver trigger, the upstream laser driver trigger is configured to activate the upstream laser driver and initiate an upstream signal in compliance with Data Over Cable Service Interface Specification (DOCSIS) from the user device to the at least one control point.

Distributed antenna system for supporting MIMO service

A distributed antenna system supporting MIMO service is disclosed. Some embodiments provide a distributed antenna system supporting MIMO communication, including first node, second node and one transmission line. The first node receives MIMO downlink signals of a plurality of MIMO services each including N (a natural number of 2 or more) MIMO downlink signals, and performs, for each MIMO service, frequency-conversion of N−1 MIMO downlink signals among the N MIMO downlink signals, to different frequency band from original frequency band, to generate N MIMO downlink signals without mutually overlapping frequency bands. The second node performs, for each MIMO service, frequency-conversion of the MIMO downlink signals having been frequency-converted by first node, in a complementary manner, to reconstruct the MIMO downlink signals of original frequency band. The single transmission line is used between the first node and second node for transmitting N downlink signals without mutually overlapping ...

Method of transmitting a signal in a distributed bts system

The present invention relates to a method of transmitting a signal in a distributed Base Transceiver Station (BTS) system that comprises a main unit and RF remote units. The present invention uses an optical coupler and RF couplers to transmit signals through multiple RF units, and thus extends the range of the signal transmission from 5˜10 Km to 20˜30 Km.

Optical access network of wavelength division method and passive optical network using the same

An optical access network of wavelength division method and passive optical network using the same are disclosed. The wavelength division multiplexed optical access network includes a central office for multiplexing first optical signals for wire communication and second optical signals for wireless communication and a remote node connected to the central office through an optical fiber and for demultiplexing a multiplexed optical signal received from the central office. A plurality of subscribers may be connected to the remote node. Each subscriber receives a first optical signal having a corresponding wavelength from among the demultiplexed first optical signals. The network also includes a plurality of radio relay stations connected to the remote node, each radio relay station converting a second optical signal having a corresponding wavelength from among the demultiplexed second optical signals into a radio electric signal and wirelessly transmitting the radio electric signal.

SYSTEMS AND METHODS FOR COMMUNICATING SIGNALING OVER AN OPTICAL DISTRIBUTED ANTENNA SYSTEM

In one embodiment, a distributed antenna system comprises: a master unit configured to receive a base station downlink radio frequency signal and to transmit a base station uplink radio frequency signal; and at least one remote antenna unit that is communicatively coupled to the master unit using at least one cable, the remote antenna unit configured to radiate a remote downlink radio frequency signal and to receive a remote uplink radio frequency signal; wherein the master unit comprises: a controller; and a respective interface to couple the controller to a first operator control panel; wherein the at least one remote antenna unit comprises: a controller; and a respective interface to couple the controller to a second operator control panel; wherein the master unit controller and the remote unit controller synchronize at least some information between the first and second operator control panels over the at least one cable.

Local power management for remote antenna units in distributed antenna systems

Power management for remote units in a distributed communication system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide distributed antenna system-related services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to external power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or external power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit.

Method and Apparatus for Determining Propagation Delay in a Communications Network

Techniques are disclosed for determining propagation delay of a first path and or of a second path which connect a first transceiver unit associated with a first clock to a second transceiver unit associated with a second clock in a communications network, based on a first time reference representing a time of transmission of a first signal from the first transceiver unit, a second time reference representing the time of receipt of the first signal at the second transceiver unit, a third time reference representing a time of transmission of a reply to the second signal from the second transceiver unit, and a fourth time reference representing the time of receipt of the reply to the second signal at the first transceiver unit.

Network node and a method therein enabling a first unit to connect or to be connected ad-hoc to a second unit

Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for retrieving control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network.

METHOD FOR DATA TRANSMISSION USING A LINC AMPLIFIER, A LINC AMPLIFIER, A TRANSMITTING DEVICE, A RECEIVING DEVICE, AND A COMMUNICATION NETWORK THEREFOR

The invention concerns a method for transmission of a data signal from a transmitting device (BS) to a receiving device (RAH1) using a LINC amplifier (LINC1, LINC2) for signal amplification, wherein the data signal is represented by two phase modulated signal components of constant amplitude in a first part of the LINC amplifier (LINC1, LINC2) located in the transmitting device (BS), at least one of the two phase modulated signal components of constant amplitude is transmitted over at least one optical connection (OF1, 0F2, 0F4) from the transmitting device (BS) to the receiving device (RAH1), and the at least one of the two phase modulated signal components of constant amplitude is converted from an optical signal into an electrical signal in at least one opto-electrical converter (OE1, 0E2) located in said receiving device (RAH1), a LINC amplifier, a transmitting device, a receiving device, and a communication network therefor.

Distributed antenna system for MIMO signals

A distributed antenna system includes a master unit configured to receive at least one set of multiple input multiple output (MIMO) channel signals from at least one signal source. The master unit is configured to frequency convert at least one of the MIMO channel signals to a different frequency from an original frequency, and combine the MIMO channel signals for transmission. An optical link couples the master unit with a remote for transceiving the MIMO channel signals. The remote unit is configured to receive the MIMO channel signals to be transmitted over antennas and includes an extension port configured to transceive at least one of the MIMO channel signals. An extension unit is coupled to the remote unit and is configured to frequency convert at least one of the first and second MIMO channel signals from the different frequency back to an original frequency for transmission over an antenna.

Self-optimization of mobile networks using a distributed antenna system

A telecommunications system includes a distributed antenna system (DAS) having a master unit communicatively coupled to remote antenna units (RAUs) located remotely from the master unit, the master unit communicatively coupled to base stations; and a controller communicatively coupled to the base stations and the DAS. The controller is configured to obtain current base station performance parameter(s) including base station load data or overhead communications data from the base stations; determine an updated configuration for the DAS based on the current base station performance parameter(s), the configuration of the DAS comprising an assignment of the RAUs to one or more coverage zones and an assignment of a zone profile to each of the one or more coverage zones; and adjust the assignment of RAUs to the one or more coverage zones and/or the zone profile of each coverage zone to correspond to the determined updated configuration for the DAS.

OPTICAL FIBER TRANSMISSION SYSTEM

A method for transmission of data signals using an analogue radio frequency power amplifier, a transmitting device and a receiving device therefor

OPTICAL FIBER -BASED DISTRIBUTED COMMUNICATIONS SYSTEM AND METHOD EMPLOYING WAVELENGTH DIVISION MULTIPLEXING (WDM) FOR ENHANCED UPGRADABILITY

CELLULAR BASE STATION WITH REMOTE ANTENNA

Apparatus for transferring information within a cellular network, including a base-station transceiver system (BTS) (24A) positioned at a first location, and an antenna assembly (26A), positioned at a second location remote from the first location. The BTS includes communication control circuitry (25A) which generates down-link radio-frequency (RF) signals and processes up-link RF signals, and first transducer circuitry (27A) which modulates a first beam of unguided electromagnetic radiation with the down-link RF signals and demodulates a second beam received from the antenna assembly to recover the up-link signals. The antenna assembly (26A) includes second transducer circuitry (29A) which modulates the second beam with the up-link signals, and radiates the modulated beam to the BTS. The second transducer circuitry also demodulates the first beam to recover the down-link signals, and transfers the signals to an antenna (31A), included in the assembly, which radiates the down-link signals ...

СПОСОБ И УСТРОЙСТВО РЕАЛИЗАЦИИ ВРЕМЕННОЙ СИНХРОНИЗАЦИИ

Изобретение относится к области связи. Технический результат заключается в том, что время между главным блоком и сервером тактовой синхронизации синхронизируется так, что обеспечивается большая гибкость и удобство при выборе местоположения главного блока системы, и устройства упрощаются, а затраты могут быть снижены. Настоящее изобретение раскрывает способ временной синхронизации и систему базовой станции. Система базовой станции включает в себя главный блок, по меньшей мере один радиоблок и среду передачи, выполненную с возможностью передавать информацию между главным блоком и по меньшей мере одним радиоблоком. Система базовой станции дополнительно включает в себя сервер тактовой синхронизации, сконфигурированный рядом со стороной по меньшей мере одного радиоблока или интегрированный по меньшей мере с одним радиоблоком. Сервер тактовой синхронизации выполнен с возможностью передавать данные синхронизации в главный блок через среду передачи, так что главный блок выполняет обработку конфигурирования ...

СЕТЕВОЙ УЗЕЛ И СПОСОБ В УЗЛЕ, ОБЕСПЕЧИВАЮЩИЙ ВОЗМОЖНОСТЬ ПЕРВОМУ БЛОКУ ПОДКЛЮЧАТЬСЯ ИЛИ БЫТЬ ПОДКЛЮЧЕННЫМ КО ВТОРОМУ БЛОКУ В РЕЖИМЕ САМООРГАНИЗУЮЩЕЙСЯ СЕТИ

Изобретение относится к сетевому узлу, в частности к обеспечению возможности первому блоку подключаться ко второму блоку в режиме самоорганизующейся сети (ad-hoc) в системе, сконфигурированной для удаленных и основных блоков. Техническим результатом является обеспечение гибкого подключения основных блоков и удаленных блоков, без требования установления заранее сконфигурированной топологии сети. Предложен сетевой узел (16) в оптической сети (15), который принимает запрос на подключение от первого блока (17) по оптической сети (15). Сетевой узел (16) устанавливает подключение к первому блоку (17) для управляющих данных и сохраняет управляющие данные, относящиеся к первому блоку (17). Управляющие данные извлекаются из первого блока (17) по установленному подключению, и при этом управляющие данные обеспечивают возможность первому блоку (17) подключаться/быть подключенным ко второму блоку (18) в режиме ad-hoc для передачи пользовательских данных по физическому пути через оптическую сеть (15) ...

СПОСОБ И УСТРОЙСТВО РЕАЛИЗАЦИИ ВРЕМЕННОЙ СИНХРОНИЗАЦИИ

... 1. Система базовой станции, отличающаяся тем, что она содержит:- главный блок, по меньшей мере, один радиоблок и среду передачи, выполненную с возможностью передавать информацию между главным блоком и, по меньшей мере, одним радиоблоком,- при этом система базовой станции дополнительно содержит сервер тактовой синхронизации, выполненный с возможностью передавать первые данные синхронизации из сервера тактовой синхронизации в главный блок через среду передачи, чтобы предоставлять возможность главному блоку выполнять обработку конфигурирования согласно первым данным синхронизации для того, чтобы реализовывать временную синхронизацию с сервером тактовой синхронизации, при этом сервер тактовой синхронизации конфигурируется рядом со стороной, по меньшей мере, одного радиоблока или интегрируется, по меньшей мере, с одним радиоблоком.2. Система базовой станции по п.1, в которой среда передачи содержит оптоволокно.3. Система базовой станции по п.2, при этом система базовой станции дополнительно ...

Processing interference in a wireless network

Interference I3 is received in a waveform received in a wireless network,the interference comprising at least one non-linear product of at least a first signalC1. On the basis of at least the first signal, a synthesized interference signal is generated comprising at least one synthesized non-linear product 7.1, and the synthesized interference signal is combined with the received waveform at the canceller element to produce a combined signal 7.2. The combined signal is processed 7.3 to determine an indication of a relationship between a level of said interference in the combined signal and a level of said interference in the received waveform to decide which to use as the received signal for further processing (i.e. which is used as the output) (referred to herein as a Figure of Merit decision). The interference may be passive intermodulation or passive harmonic products. The level of interference may be based on a Signal to Noise ratio or average power level. The degree of cancellation ...

System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network

System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network

Multi-range communication system

Multi-range communication system

A distributed antenna system comprises a primary connection area 22 (preferably including a primary hub) and a secondary connection area 25 (preferably including a secondary hub). The primary connection area is connected to first and second network communications devices 15 (e.g. first and second base stations). A first optical fibre 39 connects the primary connection area to the secondary connection area and a second optical fibre connects the secondary connection area to at least one area. The area preferably includes a unit which has an antenna. RF or millimeter wave signals are transmitted from the network communications devices to user equipment 18 over the optical fibers, via the primary connection area, secondary communication area and area. The first and second optical fibres each include at least first and second strands, for communicating signals in first and second frequency ranges. Optionally the first and second signals can be millimeter signals that are at least one octave ...

Hybrid universal broadband telecommunications using small radio cells interconnected by free-space optical links

ALONG-OPTICAL-FIBER RADIO COMMUNICATION SYSTEM

OPTICAL FIBER-BASED DISTRIBUTED COMMUNICATIONS SYSTEM AND METHOD EMPLOYING WAVELENGTH DIVISION MULTIPLEXING (WDM) FOR ENHANCED UPGRADABILITY

OPTICAL FIBER-BASED DISTRIBUTED COMMUNICATIONS COMPONENTS, SYSTEMS, AND METHODS EMPLOYING WAVELENGTH DIVISION MULTIPLEXING (WDM) FOR ENHANCED UPGRADABILITY Optical fiber-based distributed communications components and systems, and related methods employing wavelength division multiplexing (WDM) for enhanced upgradability are 10 disclosed. In one embodiment, the system comprises a plurality of downlink optical transmitters configured to receive downlink electrical radio frequency (RF) signals from a plurality of RF sources and convert the downlink electrical RF signals into downlink optical RF signals. The system also comprises a wavelength division multiplexer configured to multiplex downlink optical RF signals into a plurality of downlink wavelengths over a 15 common downlink optical fiber connected to a plurality of remote antenna units (RAUs). In this manner, additional downlink optical fibers are not required to support providing additional RAUs in the system. The systems and methods ...

Coaxial cable assembly

The present invention relates to a coaxial cable assembly capable of minimizing damage to a coaxial cable due to birds and the like and improving watertightness and workability of connection work at a base station when installed outdoors. Fig. 5 -21 -33 -35 t½39 ...

NETWORK SWITCH FOR A DISTRIBUTED ANTENNA NETWORK

NETWORK SWITCH FOR A DISTRIBUTED ANTENNA NETWORK A system for transporting IP data in a Distributed Antenna System includes at least one Digital Access Units (DAU) having a plurality of optical input/output ports and at least one Ethernet port and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. Each of the plurality of DRUs has a plurality of optical input/output ports and at least one Ethernet port. The at least one DAU includes a Framer/Deframer operable to separate cellular payload data from IP data and a network switch operable to buffer the cellular payload data and the IP data and to route the IP data received from the plurality of DRUs to the at least one Ethernet port of the DAU.

WIRELESS COMMUNICATION SYSTEM

A wireless communication system according to the invention is to perform communication with a terminal station at a radio frequency higher than a millimeter waveband. The wireless communication system includes, as transmission devices to the terminal station, a center station device which forms a baseband signal to the terminal station and a plurality of access point devices which receive delivered signals from the center station device and emit radio waves to the terminal station. Cover areas of the access point devices partially overlap to constitute a service area to the terminal station by all the cover areas. In this manner, a frequency higher than a millimeter wave band is applied to wireless communication to the terminal station to make it possible to widen the service area. When each of the access point devices has a configuration which simultaneously sends a transmission signal main body and a local oscillation signal of a radio frequency and the terminal station has a configuration ...

COMMUNICATIONS SYSTEM

A communications system has a base centre with radio transceivers 15 for providing a number of radio frequency (RF) communications links and a plurality of fixed radio ports 1 through which RF signals can be transmitted and received over the air. A fibre optic network (2, 4) interconnects the RF transceivers 15 and the fixed radio ports 1, and carrys the RF signals by means of optical signals. There are plurality of radio/optical interfaces by which RF signals can be modulated onto and demodulated from one or more optical signals, between the RF transceivers and the fibre optic network, and between the fibre optic network and the fixed radio ports. A matrix switch 13 selectively interconnects the transceivers and the radio ports through the fibre optic network.

WIRELESS COMMUNICATION SYSTEM

A radio communication system for communication with a terminal station at a radio frequency of a millimeter wave band or more comprises, as a transmission side device to the terminal station, a center station device which generates a baseband signal directed to the terminal station and access point devices which radiate a radio wave directed to the terminal station upon the reception of a distributed signal from the center station device. The cover areas of each access point device partially overlap to constitute service areas directed to the terminal station over all the cover areas. Thus, even applying a frequency of a millimeter band enlarges a service area or more for radio communication directed to the terminal station. If each access point device has a constitution of simultaneously feeding a transmission signal main body and a local oscillation signal of a radio frequency, and the terminal station a constitution of carrying out the square-law detection of a synthetic signal of the ...

GUIDED-WAVE TRANSMISSION DEVICE WITH NON-FUNDAMENTAL MODE PROPAGATION AND METHODS FOR USE THEREWITH

Aspects of the subject disclosure may include, for example, a transmission device that includes a transmitter that generates a first electromagnetic wave to convey data. A coupler couples the first electromagnetic wave to a single wire transmission medium having an outer surface, to forming a second electromagnetic wave that is guided to propagate along the outer surface of the single wire transmission medium via at least one guided wave mode that includes an asymmetric or non-fundamental mode having a lower cutoff frequency. A carrier frequency of the second electromagnetic wave is selected to be within a limited range of the lower cutoff frequency, so that a majority of the electric field is concentrated within a distance from the outer surface that is less than half the largest cross sectional dimension of the single wire transmission medium, and/or to reduce propagation loss. Other embodiments are disclosed.

BACKHAUL LINK WITH REFERENCE SIGNAL FOR DISTRIBUTED ANTENNA SYSTEM

A distributed antenna and backhaul system provide network connectivity for a small cell deployment. Rather than building new structures, and installing additional fiber and cable, embodiments described herein disclose using high-bandwidth, millimeter-wave communications. An overhead millimeter-wave system can be used to provide backhaul connectivity. Modules can be placed onto existing infrastructure, such as streetlights and utility poles, and the modules can contain base stations and antennas to transmit the millimeter-waves to and from other modules. Uplink and downlink signals (i.e., signals directed to/from a base station from/to acommunication node) can be spectrally divided into control channels, uplink/downlink spectral segments each including modulated signals which can be frequency converted to their original/native frequency band for enabling the communication nodes to communicate with one or more mobile or stationary devices, and pilot signals which can be supplied with some ...

SYSTEM AND METHODS FOR DISTRIBUTION OF HETEROGENEOUS WAVELENGTH MULTIPLEXED SIGNALS OVER OPTICAL ACCESS NETWORK

An optical network communication system includes an optical hub, an optical distribution center, at least one fiber segment, and at least two end users. The optical hub includes an intelligent configuration unit configured to monitor and multiplex at least two different optical signals into a single multiplexed heterogeneous signal. The optical distribution center is configured to individually separate the at least two different optical signals from the multiplexed heterogeneous signal. The at least one fiber segment connects the optical hub and the optical distribution center, and is configured to receive the multiplexed heterogeneous signal from the optical hub and distribute the multiplexed heterogeneous signal to the optical distribution center. The at least two end users each include a downstream receiver configured to receive one of the respective separated optical signals from the optical distribution center.

A NETWORK NODE AND A METHOD THEREIN ENABLING A FIRST UNIT TO CONNECT OR TO BE CONNECTED AD-HOC TO A SECOND UNIT

Embodiments herein relate to a method in a network node (16) for enabling a first unit (17) to connect ad-hoc to a second unit (18) in a system configured for remote radio units and main units, which network node (16) is comprised in an optical network (15). The network node (15) receives a connection request from the first unit (17) over the optical network (15). The network node (15) establishes a connection, to the first unit (17), for control data. The network node (15) stores control data regarding the first unit (17). The control data is retrieved from the first unit (17) over the established connection and wherein the control data enables the first unit (17) to connect/be connected ad-hoc to the second unit (18) for transferring user data over a physical path through the optical network (15).

Wireless access system

분산형 안테나 시스템의 디지털 멀티플렉서

... 분산형 안테나 시스템에서 신호를 라우팅하기 위한 시스템은 하나 또는 그 이상의 기저 대역 유닛(BBU)를 포함한다. 하나 또는 그 이상의 BBU의 각각은 하나 또는 그 이상의 디지털 출력을 포함한다. 상기 시스템은 또한, 상호 연결되어 있으며 서로간에 신호를 라우팅하도록 동작 가능한 복수의 디지털 멀티플렉서 유닛(DMU)을 포함한다. 복수의 DMU의 각각은 하나 또는 그 이상의 BBU로부터의 하나 또는 그 이상의 디지털 입력을 수신하도록 동작 가능하다. 상기 시스템은 나아가, 복수의 DMU와 연결되며, 복수의 DRU와 복수의 DMU 중 하나 또는 그 이상의 사이에서 신호를 전송하도록 동작 가능한 복수의 디지털 원격 유닛(DRU)을 포함한다.

SYSTEM FOR INTERCONNECTING NODES ATTACHED TO A PASSIVE OPTICAL NETWORK

Point-to-multipoint digital radio frequency transport

A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.

TWO-DIMENSIONAL OPTICAL BEAM STEERING MODULE

An interference-free communication system having a central communication controller (CCC) with a wavelength-tunable light source that emits a tunable wavelength optical data signal, and controls the wavelength-tunable light source by conditioning, modulation and wavelength-tuning, the CCC includes a signal-transparent optical crossconnect and fiber optic network, a pencil-radiating antenna (PRA) that is a passive 2-dimensional diffractive module is coupled to the wavelength-tunable light source via the fiber optic network, the crossconnect routes the optical data signal to the PRA, the optical data signal is transmitted through a confined optical pencil beam, the PRA deflects the pencil beam in 2 angular dimensions as a function of a wavelength of the pencil beam, the deflected pencil beam is disposed for communication with an opto-electronic communication device, and a radio return channel that provides upstream communication from the communication device to the CCC includes a lack-of-connection ...

DIGITAL DATA SERVICES AND/OR POWER DISTRIBUTION IN OPTICAL FIBER-BASED DISTRIBUTED COMMUNICATIONS SYSTEMS PROVIDING DIGITAL DATA AND RADIO FREQUENCY (RF) COMMUNICATIONS SERVICES, AND RELATED COMPONENTS AND METHODS

Embodiments include distribution in optical fiber-based distributed communications systems configured to provide digital data services and radio frequency (RF) communications services, and related components and methods. Embodiments disclosed include units that can be provided in optical fiber-based distributed communications systems that are configured to support RF communication services and digital data services. The units may also be configured to support providing distribution of power.

CABLING CONNECTIVITY TESTING

Connectivity between components in a system is monitored by applying a low voltage at one end of an RF cable, interpreted as a "0" logical state, and determining whether a similar voltage appears at the other end of the cable. If the cable is connected properly, the DC voltage applied at one end will appear at the other end and a proper indication is generated. If the expected voltage level does not appear at the other side, it means that RF connection was not correctly established and an alert is generated. Test systems for testing connectivity may include a first component comprising at least one port, at least one capacitor, and at least one resistor for providing high impedance. A controller provides a first logic state to the at least one port, scans multiple input ports of the system, and records a link corresponding to the applied first logic state.

Method for reducing fronthaul load in centralized radio access networks (C-RAN)

A method is proposed of arranging, in a mobile communication network, transmission of data between user equipment and at least one base station including a central unit and at least one remote unit associated therewith. The method includes at a transmitting side including the remote unit or the central unit, quantizing the data according to a quantization bit number, and transmitting, over a fronthaul link between the transmitting side and a receiving side including the central unit or the remote unit, respectively, the quantized data to the receiving side. The method further includes, at the central unit: determining the quantization bit number, wherein the determining including varying in time the quantization bit number according to network information available at the central unit, and communicating to the at least one remote unit the determined quantization bit number.

Systems and methods for communicating signaling over an optical distributed antenna system

In one embodiment, a distributed antenna system comprises: a master unit configured to receive a base station downlink radio frequency signal and to transmit a base station uplink radio frequency signal; and at least one remote antenna unit that is communicatively coupled to the master unit using at least one cable, the remote antenna unit configured to radiate a remote downlink radio frequency signal and to receive a remote uplink radio frequency signal; wherein the master unit comprises: a controller; and a respective interface to couple the controller to a first operator control panel; wherein the at least one remote antenna unit comprises: a controller; and a respective interface to couple the controller to a second operator control panel; wherein the master unit controller and the remote unit controller synchronize at least some information between the first and second operator control panels over the at least one cable.

System and method providing network optimization for broadband networks

A backhaul network comprises at least two of a distribution point, a splitter, an amplifier, a coupler and an optical network for use within the backhaul network. Predetermined locations are selected for the at least two of the distribution point, the splitter, the amplifier, the coupler and the optical network within the backhaul network based upon a constrained optimization process that reduces cost and improves backhaul network reliability. Each of the at least two of the distribution point, the splitter, the amplifier, the coupler and the optical network are located at one of the predetermined locations from the constrained optimization process.

Wireless distributed antenna MIMO

The present disclosure relates to system applications of multicore optical fibers. One embodiment relates to a base transceiver station for a wireless telecommunication system comprising a plurality of antenna units arranged in a MIMO configuration and adapted for transmission and/or reception of radio-frequency signals, an optical transmitter in the form of an electro-optic conversion unit for each of said plurality of antenna units, each electro-optic conversion unit adapted for converting an RF signal into an optical signal, a plurality of a single core optical fibers for guiding the optical signals, and at least one first space division multiplexing (SDM) unit adapted for multiplexing said single core optical fibers into respective individual cores of a multicore fiber, or into respective individual modes of a multimode fiber.

PROVIDING DIGITAL DATA SERVICES AS ELECTRICAL SIGNALS AND RADIO-FREQUENCY (RF) COMMUNICATIONS OVER OPTICAL FIBER IN DISTRIBUTED COMMUNICATIONS SYSTEMS, AND RELATED COMPONENTS AND METHODS

Distributed communications systems providing and supporting radio frequency (RF) communication services and digital data services, and related components and methods are disclosed. The RF communication services can be distributed over optical fiber to client devices, such as remote units for example. Power can also be distributed over electrical medium that is provided to distribute digital data services, if desired, to provide power to remote communications devices and/or client devices coupled to the remote communications devices for operation. In this manner, as an example, the same electrical medium used to transport digital data signals in the distributed antenna system can also be employed to provide power to the remote communications devices and/or client devices coupled to the remote communications devices. Power may be injected and switched from two or more power sources over selected electrical medium to distribute power for power-consuming components supporting RF communications services and digital data services. 1. A remote unit , comprising:an optical input;a data medium input comprising a data input and a power input; and an electrical input medium comprising a plurality of electrical input links each configured to convey digital data signals and power signals;', the upper set of electrical output links and the lower set of electrical output links comprise at least one electrical communications output configured to distribute the digital data signals from the plurality of electrical input links to at least one communications interface; and', 'the lower set of electrical output links comprise at least one electrical power output configured to distribute the power signals to at least one power interface; and, 'an electrical output medium comprising a plurality of electrical output links comprising an upper set of electrical output links and a lower set of electrical output links, wherein, receive the digital data signals from the plurality of electrical ...

METHODS AND APPARATUS FOR IMPLEMENTING AN OPTICAL TRANSCEIVER USING A VAPOR CELL

A transmitter, receiver and transceiver system that may be used for both transmitting and receiving modulated signals are disclosed. The system includes an Electrical-to-Optical (E2O) converter that receives a Radio Frequency (RF) signal and transmits an optical signal and/or an Optical-to-Optical (O2O) that performs a wavelength translation from one wavelength to another wavelength. The Electrical-to-Optical (E2O) converter includes a vapor cell that converts the RF signal to an optical signal.

Distributed antenna systems (DAS) supporting expanded, programmable communications services distribution to programmable remote communications service sector areas

Embodiments disclosed herein include distributed antenna systems (DASs) supporting expanded, programmable communications services distribution to remote communications service sector areas. In one embodiment, the DAS includes a first programmable switch for distributing downlink communications signals into one or more communications service sector sets. The DAS further includes a second programmable switch configured to distribute the one or more communications service sector sets to one or more remote communications service sector areas. A configurable extender module is also included to provide expanded routing of communications service sector sets in the DAS. In this manner, the DAS is programmable to allow any combination of communications service sector sets and expanded communications service sector sets from any number of different base stations to be routed to any combination of remote communications service sector areas and expanded remote communications service sector areas, based ...

ЗАЩИТА ДЛЯ ВОЛОКОННО-ОПТИЧЕСКИХ СЕТЕЙ ДОСТУПА

Изобретение относится к технике связи и может использоваться в системах оптической связи. Технический результат состоит в обеспечении возможности оптоволоконной сети (ONU) осуществлять связь с терминалом (OLT). Устройство (ONU) и терминал (OLT) содержатся в пассивной волоконно-оптической сети доступа. Эта пассивная волоконно-оптическая сеть доступа содержит два волоконно-оптических пути через упомянутую сеть, основной волоконно-оптический путь и резервный волоконно-оптический путь, соединяющие ONU с OLT. Когда в основном волоконно-оптическом пути обнаруживают неисправность, между ONU и OLT по резервному пути выполняется согласование скорости передачи. Когда во время согласования скорости передачи в отношении передачи информации по резервному пути между ONU и OLT достигнуто соглашение по скорости передачи, между упомянутым ONU и упомянутым OLT осуществляется передача информации с использованием скорости передачи, о которой достигнуто соглашение, по резервному пути. 4 н. и 52 з.п. ф-лы, 11 ...

ЦИФРОВЫЕ ПРЕЗЕНТАЦИИ АНАЛОГОВЫХ СИГНАЛОВ И УПРАВЛЯЮЩИХ СЛОВ, ИСПОЛЬЗУЯ РАЗЛИЧНЫЕ ФОРМАТЫ МНОГОУРОВНЕВОЙ МОДУЛЯЦИИ

Изобретение относится к способу связи, реализуемому передатчиком. Технический результат заключается в обеспечении создания и передачи агрегированного TDM-сигнала по каналу связи. Способ содержит этапы, на которых: кодируют цифровые синфазные и квадратурно фазированные (IQ) данные, связанные с множеством аналоговых сигналов в соответствии с первым форматом многоуровневой модуляции, чтобы создать модулированный IQ-сигнал; кодируют управляющую информацию, связанную с множеством аналоговых сигналов, в соответствии со вторым форматом многоуровневой модуляции, который отличается от первого формата многоуровневой модуляции, для создания модулированного управляющего сигнала; агрегируют модулированный IQ-сигнал и модулированный управляющий сигнал посредством мультиплексирования с временным разделением (TDM) для создания агрегированного TDM-сигнала; затем передают агрегированный TDM-сигнал по каналу передачи. 5 н. и 15 з.п. ф-лы, 13 ил.

Communications system, apparatus and method

System and methods for distribution of heterogeneous wavelength multiplexed signals over optical access network

This application discloses distributing a heterogenous optical signal over a fibre segment of an optical network. The heterogeneous optical signal comprises an optical signal component of a first type and an optical signal component of a second different type, each selected from the following: an analogue optical signal, an intensity modulated signal suitable for direct detection (e.g. PAM, RZ or NRZ), a signal suitable for coherent detection (e.g. BPSK, QPSK or higher order QAM), or a differentially modulated signal (e.g. DPSK or D-QPSK). The invention relates to assigning wavelength spectrum to each component signal of the heterogenous optical signal, based on a characteristic of the fibre segment and parameters of the component optical signals. The fibre segment characteristic may be fibre type, fibre length, implementation of amplification or loss devices, implementation of wavelength filters or splitters, or network topology. The parameters of the component optical signals may include ...

Reducing inter-symbol interference in a communications system using transmission delay in a first carrier frequency

The invention lies in private mobile radio (PMR) communications systems such as TETRA, P25 or APCO-25 Land Mobile Radio systems. Communications apparatus is disclosed which is arranged to configure a signal for transmission on a first carrier frequency from a transmit station, configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal, and delay said signal for transmission on a first carrier frequency from a transmit station. The invention aims to reduce the likelihood of inter-symbol interference occurring at the mobile station.

PROCEDURE AND DEVICE FOR THE USE IN A COMMUNICATION SYSTEM

DIGITAL REPRESENTATIONS OF ANALOG SIGNALS AND CONTROL WORDS USING DIFFERENT MULTI-LEVEL MODULATION FORMATS

A method implemented by a transmitter, comprising encoding digital in-phase and quadrature-phase (IQ) data associated with a plurality of analog signals according to a first multi-level modulation format to produce a modulated IQ signal, encoding control information associated with the plurality of analog signals according to a second multi-level modulation format that is different from the first multi-level modulation format to produce a modulated control signal, aggregating the modulated IQ signal and the modulated control signal via time-division multiplexing (TDM) to produce an aggregated TDM signal, and transmitting the aggregated TDM signal over a communication channel.

A distributed antenna system having high near-far performance

The system and method for ameliorating the effect of close-in user equipment up to a point where the user equipment itself limits the performance. The system and method utilizes a digital filter in front of the LASER modulator being applied to the LASER. Additionally, total power detectors may be used at input to prevent unwanted signals from overloading stages in front of the LASER. In uplink and downlink directions, bidirectional digital filtering in the RUs allows the selective use of a given RU in a given sub-band, by a given WSP. The use of digital filtering in the RU reduces the need for hardware RF switching at the head end to accomplish the same objective of signal flexibility, by one of more WSPs, providing one or more sectors exists within the DAS.

Remote radio heads having wireless jumper connections and related equipment, systems and methods

Methods of operating a cellular radio are provided in which a first power supply signal is transmitted from a power supply to a wireless power unit at least in part over a power cable. A second power supply signal is wirelessly transmitted from the wireless power unit to the cellular radio to power the cellular radio. Data is transmitted from a baseband unit that is associated with the cellular radio to a wireless transceiver at least in part over a data cable. This data is wirelessly transmitted from the wireless transceiver to the cellular radio. The data is then transmitted through an antenna that is coupled to the cellular radio.

System and method for performance optimization in and through a distributed antenna system

A method for operating a DAS includes providing a set of digital remote units (remotes) operable to send and receive wireless radio signals. Each of the set of remotes is associated with a geographic area. The method also includes providing a digital access unit (host) operable to communicate with the set of remotes, receiving uplink signals at one or more of the set of remotes, and monitoring train activity in the geographic areas. The method further includes increasing a gain coefficient associated with one of the set of remotes in response to determining an increase in monitored train activity, decreasing a gain coefficient associated with another of the set of remotes in response to determining a decrease in monitored train activity, and transmitting, to the host, scaled uplink signals associated with the one of the set of remotes and the another of the set of remotes.

Hybrid picocell communication system

Network switch for a distributed antenna network

NETWORK SWITCH FOR A DISTRIBUTED ANTENNA NETWORK A system for transporting IP data in a Distributed Antenna System includes at least one Digital Access Units (DAU) having a plurality of optical input/output ports and at least one Ethernet port and a plurality of Digital Remote Units (DRUs) coupled to the at least one DAU. Each of the plurality of DRUs has a plurality of optical input/output ports and at least one Ethernet port. The at least one DAU includes a Framer/Deframer operable to separate cellular payload data from IP data and a network switch operable to buffer the cellular payload data and the IP data and to route the IP data received from the plurality of DRUs to the at least one Ethernet port of the DAU.

Cellular base station with remote antenna

COMMUNICATION SYSTEM FOR ANALOG AND DIGITAL COMMUNICATION SERVICES

A first and a second interconnection unit comprising a respective first and a second communication interface, a first and a second electro-optical converter, and a multiplexing unit, is disclosed. The first interconnection unit is adapted to receive electrically transmitted analog and digital information, convert said information into electrically transmitted information, and to multiplex the information so as to enable transmission over a bidirectional link. The second interconnection unit is adapted to receive and de-multiplex the transmitted analog and digital information, to convert it back into electrically transmitted analog and digital information, and to output said information. A system comprising the first and second interconnection units is also disclosed. The system is adapted for supplying both analog services and digital services with communication information over the bidirectional link.

OPTICAL AND RF TECHNIQUES FOR AGGREGATION OF PHOTO DIODE ARRAYS

An active receiver structure that combines a large number of detectors without bandwidth penalty may provide a better signal-to-noise ratio (SNR) than conventional Radio Frequency over Glass (RFoG) networks. A transmission line receiver is used to combine a large number of optical detectors into a single radio frequency (RF) signal without a bandwidth penalty and a modest penalty in noise performance that results in an SNR that is much better than traditional optical combining techniques that are followed by a single detector. An optical multiplexer structure may be designed around the active splitter such that passive optical network (PON) operation is not impeded.

COMMUNICATIONS SYSTEMS,APPARATUSES,METHODS AND COMPUTER PROGRAMS FOR REPEATING A SIGNAL WITH REDUCED INTERSYMBOL INTERFERENCE

Communications apparatus is disclosed which is arranged to configure a signal for transmission on a first carrier frequency from a transmit station, configure said signal for transmission on a second carrier frequency to a remote repeater station for retransmission on said first carrier frequency to form a repeated signal, and delay said signal for transmission on a first carrier frequency from a transmit station..delta.

LOW COST OPTICAL FIBER RF SIGNAL DISTRIBUTION SYSTEM

A fiber optic RF signal distribution system has a plurality of antenna stations, each station including an RF antenna. A central RF signal distribution hub receives and transmits signals within and external to the system. A pair of optical fibers connects each antenna station directly to the distribution hub with the connections being in a star configuration. A connectorized laser module permits direct coupling of a distributed feedback semiconductor laser to the end of each optical fiber without an intervening connector. The module accepts an APC connector with the angled end of its optical fiber in an aperture plane in a connector housing. A distributed feedback laser is mounted in the connector housing with a lens for illuminating the aperture plane and hence, the end of the fiber at an acute angle to the axis of the fiber. Furthermore, the illumination is defocused at the aperture plane for loose optical coupling to the fiber and minimized reflection to the DFB laser.

Method and apparatus for use in a communication system

Distributed antenna system based on optical fiber of, assembly and for monitoring and configuration of the optical fiber-based distributed antenna system, and related method of assembly

Remote reconfigurable distributed antenna system and method

Protection for fibre optic access networks

An Optical Network Unit, ONU, and an Optical Line Terminal, OLT, as well as a respective method therein, are provided for enabling the ONU to communicate with the OLT. The ONU and at least one OLT are comprised in a passive fibre optic access network. The passive fibre optic access network comprises two fibre paths through the network, a main fibre path and a back-up fibre path, connecting the ONU with the OLT. When a fault is detected in the main fibre path is detected, transmission rate negotiation is performed between the ONU and the OLT over the back-up path. When a transmission rate is agreed upon between the ONU and the OLT during said transmission rate negotiation with regard to communication over the back-up path, the communication between the ONU and the OLT is executed using the agreed transmission rate over the back-up path.

INTENDED MILLIMETRE-LENGTH OPTICAL SOURCE HAS A DISTRIBUTION NETWORK OF THE RADIO OPERATOR TYPE ON FIBRE

분산형 안테나 시스템을 위한 기준 신호를 갖는 백홀 링크

... 분산형 안테나 및 백홀 시스템은 소규모 셀 전개를 위한 네트워크 연결을 제공한다. 새로운 구조물들을 구축하여 추가적인 섬유 및 케이블을 설치하기보다는, 본원에서 설명되는 실시형태는 고-대역폭의 밀리미터파 통신을 사용하는 것을 개시한다. 백홀 연결을 제공하기 위해 오버헤드 밀리미터파 시스템이 사용될 수 있다. 가로등 및 전신주와 같은 기존의 기반 시설에 모듈들이 배치될 수 있으며, 모듈들은 밀리미터파를 다른 모듈들과 송수신하기 위한 안테나들 및 기지국들을 포함할 수 있다. 업링크 및 다운링크 신호(즉, 기지국으로부터 통신 노드로/통신 노드로부터 기지국으로 지향되는 신호)는, 제어 채널들; 통신 노드들이 하나 이상의 모바일 또는 고정식 디바이스와 통신할 수 있도록 하기 위해 이들의 원래의/본래의 주파수 대역으로 주파수 변환될 수 있는 변조된 신호들을 각각 포함하는 업링크/다운링크 스펙트럼 세그먼트들; 및 통신 노드들 간에 생성되는 왜곡을 완화하기 위해 스펙트럼 세그먼트들의 일부 또는 전부가 공급될 수 있는 파일럿 신호들로 스펙트럼 분할될 수 있다. 파일럿 신호들은 수신 신호로부터 왜곡(예를 들어, 위상 왜곡)을 제거하기 위해 업스트림 및 다운스트림 통신 노드들의 트랜시버들에 의해 처리될 수 있다.

Remotely Reconfigurable Distributed Antenna System and Methods

분산 안테나 시스템을 위한 리모트 유닛의 데이지 체인형 링

... 본 발명은 새로운 유용성을 갖는 필드-재구성 가능한 소프트웨어 정의 무선(software defined radio; SDR) 기반 분산 안테나 시스템(DAS)을 개시하고 다중 변조 방식(변조에 독립적임), 다중 캐리어, 다중 주파수 대역 및 다중 채널을 지원한다. 보다 구체적으로, 본 발명은 리모트 유닛들의 하나 또는 그 이상의 데이지 체인형 링을 이용하는 DAS에 관련된다. 본 발명은 유연성 있는 동시 송출(Flexible Simulcast), 자동 트래픽 로드 밸런싱(load-balancing), 네트워크 및 무선 리소스 최적화, 네트워크 교정(calibration), 자립형(autonomous)/지원형(assisted) 커미셔닝(commissioning), 캐리어 풀링(pooling), 자동 주파수 선택, 주파수 캐리어 배치, 트래픽 감시, 트래픽 태킹(tagging), 파일럿 비콘, 등과 같은 분산 무선 네트워크의 이용과 성능을 관리하고, 제어하고, 향상시키며 용이하게 하기 위한 고도의 유연성을 가능케 한다. 결과적으로, 본 발명에 의한 DAS는 오퍼레이터의 무선 네트워크의 효율 및 트래픽 용량을 증가시킬 수 있다.

Method, Server and System for Processing of Connecting Information about Optic Repeater

Cell phone/internet communication system for rf isolated areas

A communication system for providing downlink and uplink communication between Service Providers, and users located in RF remotely located isolated areas, includes the sequential series connection of Service Provider signal sectors to Radio Interface Modules (RIM's), Service Combiner Units (SCU's), Fiber Transceiver Units (FTU's), Optical Multiplexer Units (OMU's), and Remote Fiber Nodes (RFN's), with only the RFN's being located in the RF isolated areas.

Providing digital data services in optical fiber-based distributed radio frequency (rf) communication systems, and related components and methods

Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and digital data services can be distributed over optical fiber to client devices, such as remote antenna units for example. In certain embodiments, digital data services can be distributed over optical fiber separate from optical fiber distributing RF communication services. In other embodiments, digital data services can be distributed over common optical fiber with RF communication services. For example, digital data services can be distributed over common optical fiber with RF communication services at different wavelengths through wavelength-division multiplexing (WDM) and/or at different frequencies through frequency-division multiplexing (FDM). Power distributed in the optical fiber-based distributed communications system to provide power to remote antenna units can also be accessed to provide power to digital data service components.

Distributed antenna system for mimo signals

A distributed antenna system includes a master unit configured to receive at least one set of multiple input multiple output (MIMO) channel signals from at least one signal source. The master unit is configured to frequency convert at least one of the MIMO channel signals to a different frequency from an original frequency, and combine the MIMO channel signals for transmission. An optical link couples the master unit with a remote for transceiving the MIMO channel signals. The remote unit is configured to receive the MIMO channel signals to be transmitted over antennas and includes an extension port configured to transceive at least one of the MIMO channel signals. An extension unit is coupled to the remote unit and is configured to frequency convert at least one of the first and second MIMO channel signals from the different frequency back to an original frequency for transmission over an antenna.

Orthogonal frequency division multiple access time division multiple access-passive optical networks ofdma tdma pon architecture for 4g and beyond mobile backhaul

Systems and methods are provided for network communication using wireless base stations and an optical orthogonal frequency division multiple access (OFDMA) signal generated on an optical wavelength, with the optical OFDMA signal being composed of a plurality of OFDMA subcarriers. A multi-level modulator modulates each of the plurality of OFDMA subcarriers. A single optical wavelength propagates each of the plurality of OFDMA subcarriers to different base stations; a passive optical splitter delivers the optical OFDMA signal to different base stations; and an OFDMA subcarrier de-multiplexer delivers and extracts traffic for each of the base stations in an electronic-domain, wherein the extracted traffic is remodulated in a wireless signal format. Antennas at each of the base stations transmit wireless signals, and the wireless signals are recovered and processed from the base stations.

Power distribution module(s) capable of hot connection and/or disconnection for distributed antenna systems, and related power units, components, and methods

Power distribution modules capable of “hot” connection and/or disconnection in distributed antenna systems (DAS), and related components, power units, and methods are disclosed. The power distribution modules are configured to distribute power to a power-consuming DAS component(s), such as a remote antenna unit(s) (RAU(s)). By “hot” connection and/or disconnection, it is meant that the power distribution modules can be connected and/or disconnected from a power unit and/or a power-consuming DAS component(s) while power is being provided to the power distribution modules. Power is not required to be disabled in the power unit before connection and/or disconnection of power distribution modules. As a non-limiting example, the power distribution modules may be configured to protect against or reduce electrical arcing or electrical contact erosion that may otherwise result from “hot” connection and/or connection of the power distribution modules.

Data Transport in a Virtualized Distributed Antenna System

A system for routing signals in a Distributed Antenna System includes a plurality of local Digital Access Units (DAUs) located at a Local location. Each of the plurality of local DAUs is coupled to each other and operable to route signals between the plurality of local DAUs. Each of the plurality of local DAUs includes one or more Base Transceiver Station (BTS) RF connections. Each of the plurality of BTS RF connections is operable to be coupled to one of one or more sectors of a BTS. The system also includes a plurality of remote DAUs located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport signals between the plurality of remote DAUs.

SYSTEMS, METHODS, AND DEVICES FOR INCREASING RADIO FREQUENCY (RF) POWER IN DISTRIBUTED ANTENNA SYSTEMS

A system, and related methods and devices, is disclosed for increasing an output power of a frequency band in a distributed antenna system that includes at least one RXU module that is operatively coupled to at least one RAU module. A first group of the plurality of channels within a first frequency band may be allocated to the RAU module, and a second group of the plurality of the channels within the first frequency band may be allocated to the RXU module. The at least one RAU module may be configured to receive RF signals from the first group of the plurality of channels being used in the first frequency band, and the at least one RXU module may be configured to receive RF signals from the second group of the plurality of channels being used in the first frequency band. In this manner, the amount of composite power per channel is increased. 1. A distributed antenna system , comprising:at least one remote antenna unit (RAU) module configured to receive radio frequency (RF) signals from a first group of a plurality of channels being used in a first frequency band supported by the distributed antenna system; andat least one remote expansion unit (RXU) module operatively coupled to the at least one RAU module and configured to receive RF signals from a second group of the plurality of channels being used in the first frequency band supported by the distributed antenna system.2. The distributed antenna system of claim 1 , wherein the at least one RAU module comprises at least one optical-to-electrical (O/E) converter configured to convert a downlink optical RF communications signal to a downlink electrical RF communications signal.3. The distributed antenna system of claim 2 , wherein the at least one RAU module further comprises at least one electrical-to-optical (E/O) converter configured to convert an uplink electrical RF communications signal to an uplink optical RF communications signal.4. The distributed antenna system of claim 1 , wherein the at least one RAU ...

Software configurable distributed antenna system and method for reducing uplink noise

A distributed antenna system includes a master unit including a downlink RF input operable to receive an RF input signal from a downlink port of a base station, a first optical port, and a second optical port. The distributed antenna system also includes a first remote unit coupled to the first optical port. The first remote unit comprises a downlink antenna port and a first uplink antenna port and a second remote unit coupled to the second optical port of the master unit. The second remote unit comprises a downlink antenna port and a second uplink antenna port. The master unit is operable to transmit a first RF signal associated with the first RF uplink signal to a first uplink port of the base station and transmit a second RF signal associated with the second RF uplink signal to a second uplink port of the base station.

MANAGING A COMMUNICATIONS SYSTEM BASED ON SOFTWARE DEFINED NETWORKING (SDN) ARCHITECTURE

Embodiments of the disclosure relate to managing a communications system based on software defined networking (SDN) architecture. An SDN controller is provided in the communications system to manage a wireless distribution system (WDS) and a local area network (LAN) based on SDN architecture. The SDN controller is communicatively coupled to a WDS control system in the WDS and a LAN control system in the LAN via respective SDN control data plane interfaces (CDPIs). The SDN controller analyzes a WDS performance report and a LAN performance report and provides a WDS configuration instruction(s) and/or a LAN configuration instruction(s) to the WDS control system and/or the LAN control system to reconfigure a WDS element(s) and/or a LAN element(s) to improve quality-of-experiences (QoEs) of the communications system. Monitoring and optimizing the WDS and the LAN based on a unified software-based network management platform can improve performance at reduced operational costs and complexity. 1. A software defined networking (SDN) controller in a communications system , the SDN controller configured to:receive a wireless distribution system (WDS) performance report from a WDS control system in communication with the SDN controller and a WDS comprising a plurality of remote units;receive a local area network (LAN) performance report from a LAN control system in communication with the SDN controller and a LAN;determine whether quality-of-experiences (QoEs) of the communications system meet performance targets;provide a WDS configuration instruction to the WDS control system in response to determining that the WDS needs to be reconfigured to improve the QoEs of the communications system; andprovide a LAN configuration instruction to the LAN control system in response to determining that the LAN needs to be reconfigured to improve the QoEs of the communications system, wherein: determine a selected radio frequency (RF) circuit in the LAN that is out of service; and', 'generate ...

DATA TRANSPORT IN A VIRTUALIZED DISTRIBUTED ANTENNA SYSTEM

A system for routing signals in a Distributed Antenna System (DAS) includes one or more local Digital Access Units (DAUs) located at a local location and one or more remote DAUs located at one or more remote locations. Each of the one or more local DAUs includes an optical port coupled to an upstream unit. The upstream unit includes at least one of a repeater, a baseband unit, a Base Transceiver Station (BTS), or a DAU. The one or more remote DAUs are coupled to the one or more local DAUs via one or more optical cables. A distance between the local location and each of the one or more remote locations is greater than two kilometers. 1a plurality of local Digital Access Units (DAUs) located at a Local location, each of the plurality of local DAUs being coupled to each other and operable to route signals between the plurality of local DAUs, wherein each of the plurality of local DAUs includes one or more Base Transceiver Station (BTS) RF connections, each of the plurality of BTS RF connections being operable to be coupled to one of one or more sectors of a BTS; anda plurality of remote DAUs located at a Remote location, wherein the plurality of remote DAUs are coupled to each other and operable to transport signals between the plurality of remote DAUs.. A system for routing signals in a Distributed Antenna System, the system comprising: The present application is a continuation of U.S. patent application Ser. No. 16/929,406, filed Jul. 15, 2020, which is a continuation of U.S. patent application Ser. No. 16/039,182, filed Jul. 18 2018, now U.S. Pat. No. 10,721,548 which is a continuation of U.S. patent application Ser. No. 15/445,467, filed Feb. 28, 2017, now U.S. Pat. No. 10,051,350, which is a continuation of U.S. patent application Ser. No. 14/678,779, filed Apr. 3, 2015, now U.S. Pat. No. 9,621,971, which is a continuation of U.S. patent application Ser. No. 13/754,702, filed on Jan. 30, 2013, now U.S. Pat. No. 9,025,956, which claims benefit under 35 U.S.C. § 119 ...

DATA COMPRESSION METHOD AND DEVICE

The present disclosure relates to the field of mobile communications, and in particular, to a data compression method and device. In order to solve the problem of low compression efficiency in the prior art, the method comprises: sampling an obtained baseband signal and obtaining a number of discrete baseband signals to achieve an initial compression; calculating amplitude and phase values of each discrete baseband signal, on the basis of bit widths preset for the adjusted amplitude value and the phase value, carrying out a bit-truncating on the adjusted amplitude value and the phase value respectively, and combining the truncated phase value data and amplitude value data to obtain the final compressed discrete baseband signal. In this way, by truncating bits according to the preset bit width without distortion, the data bits of the baseband signal can be reduced accordingly, thereby reducing the amount of transmitted data, effectively improving the compression efficiency, and thus saving fiber resources. 1. A method for compressing data , the method comprising:obtaining a baseband signal;sampling obtained baseband signal to obtain several discrete baseband signals;calculating a phase and an amplitude of each of the discrete baseband signals, and adjusting the amplitude of each of the discrete baseband signals respectively so that adjusted amplitude satisfies a preset peak-to-average ratio; andperforming respectively for each of the discrete baseband signals operations of:bit-truncating the phase and the adjusted amplitude corresponding respectively to each of discrete baseband signals according to bit widths which are set respectively corresponding to the phase and the adjusted amplitude, and combining bit-truncated phase and bit-truncated amplitude into a compressed discrete baseband signal.2. The method according to claim 1 , wherein sampling the baseband signal to obtain the several discrete baseband signals comprises:sampling the baseband signal at a preset ...

REMOTE RADIO HEADS HAVING WIRELESS JUMPER CONNECTIONS AND RELATED EQUIPMENT, SYSTEMS AND METHODS

Methods of operating a cellular radio are provided in which a first power supply signal is transmitted from a power supply to a wireless power unit at least in part over a power cable. A second power supply signal is wirelessly transmitted from the wireless power unit to the cellular radio to power the cellular radio. Data is transmitted from a baseband unit that is associated with the cellular radio to a wireless transceiver at least in part over a data cable. This data is wirelessly transmitted from the wireless transceiver to the cellular radio. The data is then transmitted through an antenna that is coupled to the cellular radio. 1. A trunk cable assembly for a cellular base station , comprising:a trunk cable that includes a conductive power cable and a fiber optic data cable;a trunk cable termination that is directly attached to the trunk cable, the trunk cable termination including:an enclosure;a wireless power unit that is electrically connected to the conductive power cable;an optical-to-electrical converter that is coupled to an optical fiber of the fiber optic data cable; anda wireless transceiver that is coupled to an output of the optical-to-electrical converter,wherein the wireless power unit, the optical-to-electrical converter and the wireless transceiver are at least partly within the enclosure.2. The trunk cable assembly of claim 1 , wherein a common jacket encloses the conductive power cable and the fiber optic data cable to provide a hybrid fiber optic-power trunk cable claim 1 , and wherein the enclosure is a permanently-sealed enclosure.3. The trunk cable assembly of claim 2 , wherein the wireless power unit is configured to wirelessly transmit power to a tower-mounted radio of the cellular base station and the wireless transceiver is configured to wirelessly transmit data to the tower-mounted radio of the cellular base station.4. The trunk cable assembly of claim 2 , wherein the wireless power unit is configured to receive an alternating ...

SYSTEMS, METHODS, AND DEVICES FOR INCREASING RADIO FREQUENCY (RF) POWER IN DISTRIBUTED ANTENNA SYSTEMS

A system, and related methods and devices, is disclosed for increasing an output power of a frequency band in a distributed antenna system that includes at least one RXU module that is operatively coupled to at least one RAU module. A first group of the plurality of channels within a first frequency band may be allocated to the RAU module, and a second group of the plurality of the channels within the first frequency band may be allocated to the RXU module. The at least one RAU module may be configured to receive RF signals from the first group of the plurality of channels being used in the first frequency band, and the at least one RXU module may be configured to receive RF signals from the second group of the plurality of channels being used in the first frequency band. In this manner, the amount of composite power per channel is increased. 1. A distributed antenna system , comprising:at least one remote antenna unit (RAU) module configured to receive a first radio frequency (RF) signal and a second RF signal for a first frequency band supported by the distributed antenna system; andat least one remote expansion unit (RXU) module operatively coupled to the at least one RAU module and comprising at least one antenna, the at least one RXU module configured to receive the second RF signal for the first frequency band supported by the distributed antenna system from the at least one RAU module.2. The distributed antenna system of claim 1 , wherein the at least one RAU module comprises at least one optical-to-electrical (O/E) converter configured to convert the first RF signal and the second RF signal comprising a first downlink optical RF communications signal and a second downlink optical RF communications signal to a respective first downlink electrical RF communications signal and a second downlink electrical RF communications signal.3. The distributed antenna system of claim 2 , wherein the at least one RAU module further comprises at least one electrical-to- ...

SAFETY POWER DISCONNECTION FOR POWER DISTRIBUTION OVER POWER CONDUCTORS TO POWER CONSUMING DEVICES

Safety power disconnection for remote power distribution in power distribution systems is disclosed. The power distribution system includes one or more power distribution circuits each configured to remotely distribute power from a power source over current carrying power conductors to remote units to provide power for remote unit operations. A remote unit is configured to decouple power from the power conductors thereby disconnecting the load of the remote unit from the power distribution system. A current measurement circuit in the power distribution system measures current flowing on the power conductors and provides a current measurement to the controller circuit. The controller circuit is configured to disconnect the power source from the power conductors for safety reasons in response to detecting a current from the power source in excess of a threshold current level indicating a load. 1. A power consuming unit , comprising:a remote power input coupled to a power conductor carrying current from a power distribution circuit; and the remote switch circuit configured to be closed to couple to the remote power input; and', 'the remote switch circuit further configured to be opened to decouple from the remote power input; and, 'a remote switch circuit comprising a remote switch input configured to receive a remote power connection signal;'}a switch control circuit coupled to the remote switch circuit and configured to periodically open the remote switch circuit to decouple from the remote power input; distribute one or more downlink communications signals received from one or more downlink communications links, to one or more client devices; and', 'distribute one or more uplink communications signals from the one or more client devices to one or more uplink communications links., 'the power consuming unit configured to2. The power consuming unit of claim 1 , wherein the power consuming unit further comprises a remote antenna unit within a distributed communications ...

FIBER TO THE ANTENNA

A cell site includes a tower, a multi-service terminal mounted to the tower and a base transceiver station in communication with the multi-service terminal. The multi-service terminal includes a housing and a plurality of adapters mounted to the housing. Each of the adapters includes an outer port accessible from outside the housing and an inner port accessible from inside the housing. 1. (canceled)2. A method of cabling a cell tower , the method comprising:routing a cable breakout arrangement of a cable assembly between a base of the cell tower and an elevated position on the cell tower, the cable assembly including a plurality of optical fibers, and the cable breakout arrangement sealing a breakout of the optical fibers;securing the breakout arrangement to the cell tower at the elevated position; androuting a drop cable from the breakout arrangement to a remote transceiver to the cell tower, the drop cable optically coupling the remote transceiver to the cable assembly.3. The method of claim 2 , wherein the breakout arrangement carries a ruggedized connection location at which the drop cable couples to the cable assembly claim 2 , wherein routing the drop cable includes attaching a connectorized end of the drop cable to the ruggedized connection location.4. The method of claim 2 , wherein the drop cable includes a plurality of optical drop fibers that optically couple to the remote transceiver.5. The method of claim 4 , wherein the drop cable includes first and second optical fibers.6. The method of claim 2 , wherein the drop cable is one of a plurality of drop cables and the remote transceiver is one of a plurality of remote transceivers; and wherein routing the drop cable includes routing the plurality of drop cables to the remote transceivers.7. The method of claim 2 , wherein the cable breakout arrangement includes a body defining an environmentally sealed interior in which the breakout of the optical fibers is disposed claim 2 , the body being elongate along ...

DUAL POLARIZATION VECTOR SIGNAL GENERATION AND DETECTION

A scheme for generating, transmitting and receiving dual-polarization asymmetric single sideband photonic vector signal at millimeter wave spectral region is described. At a transmitter, information bits to be transmitted are modulated using a vector modulation technique to generate a baseband signal. The baseband signal is converted into its single sideband (SSB) version using a complex frequency source having a first frequency. Two IQ signals are generated using an integrated dual polarization IQ modulator. The I/Q modulator is driven by a laser source at frequency fc. The resulting signal is transmitter over an optical transmission medium and/or a multi-input, multi-output over the air antenna configuration, upconverted by a single-ended photodiode to a desired radio-frequency (RF) carrier frequency. 1. A method of optical communication , implemented at a transmitter in an optical communication network , comprising: receiving a first sequence of information bits;', 'vector-modulating the first sequence of information bits,, 'operating a first IQ modulator for mixing the first stream of vector-modulated symbols with a lower side band (LSB) carrier having a first frequency to generate a complex vector-modulated LSB signal;', 'generating a first I-component signal by adding an imaginary part of the vector-modulated LSB signal with an imaginary part of an upper side band (USB) carrier having a second frequency;', 'generating a first Q-component signal by adding a real part of the vector-modulated LSB signal with a real part of the upper side band (USB) carrier having the second frequency;, 'thereby creating a first stream of vector-modulated symbols;'} receiving a second sequence of information bits;', 'vector-modulating the second sequence of information bits,, 'operating, simultaneously with the first IQ modulator, a second IQ modulator for mixing the second stream of vector-modulated symbols with another lower side band (LSB) carrier having the first frequency to ...

OPTICAL TRANSCEIVER MODULE FOR COMMUNICATIONS IN DAS SYSTEMS

The optical transceiver module installable on the Master Unit side of a DAS system connectable to a plurality of Remote Units, comprises an uplink connector and a downlink connector connectable to a radio base station, first and second optical connectors connectable to the Remote Units, a downlink path for the connection between the downlink connector and the first and second optical connector, and an uplink path for the connection between the uplink connector and the first and second optical connectors, wherein the uplink path comprises a first coupler of the WDM type and a second coupler of the WDM type connected, respectively, to the first optical connector and to the second optical connector, and wherein the uplink path comprises first and second demultiplexers connected, respectively, to the outputs of the first coupler and of the second coupler and adapted to separate the optical signals coming from the Remote Units. 1. An optical transceiver module for communications in DAS (Distributed Antenna System) systems , installable on the Master Unit side of a DAS system connectable to a plurality of Remote Units , comprising:at least one uplink connector and at least one downlink connector connectable to at least one radio base station;at least a first optical connector and at least a second optical connector connectable to said Remote Units;at least one downlink path for the connection between said downlink connector and said first and second optical connector; andat least one uplink path for the connection between said uplink connector and said first and second optical connector,wherein said uplink path comprises at least a first coupler of the WDM type and at least a second coupler of the WDM type connected, respectively, to said first optical connector and to said second optical connector,wherein said uplink path comprises at least a first demultiplexer and a second demultiplexer connected, respectively, to the outputs of said first coupler and of said second ...

REMOTELY RECONFIGURABLE DISTRIBUTED ANTENNA SYSTEM AND METHODS

The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc. 1. A radio access network comprising:a plurality of radio points that wirelessly transmit to and receive signals from a plurality of wireless subscriber devices; anda baseband controller coupled to a network, wherein the baseband controller assigns a plurality of radio resources to the plurality wireless subscriber devices, and the plurality of radio resources are used to wirelessly transmit and receive signals between the plurality of radio points and the plurality of wireless subscriber devices,wherein the baseband controller communicates with the plurality of radio points through the network, the network comprising a plurality of switches and a plurality of connections between the plurality of switches, the baseband controller and the plurality of radio points for passage of data, andwherein the baseband controller obtains data capacity information for different portions of the network and configures one or more communication cells in the different portions of the network based on the data capacity information in response to changes in data capacity needs, wherein the one or more communication cells are configured by changing a number of the plurality of radio points assigned to the one or more communication cells.2. The radio access network of claim 1 , ...

FIBER TO THE ANTENNA

A cell site includes a tower, a multi-service terminal mounted to the tower and a base transceiver station in communication with the multi-service terminal. The multi-service terminal includes a housing and a plurality of adapters mounted to the housing. Each of the adapters includes an outer port accessible from outside the housing and an inner port accessible from inside the housing. 1. (canceled)2. A cell site of a telecommunications network comprising:a tower;an environmentally sealed housing mounted to the tower;a multi-fiber cable routed up the tower and into the sealed housing through a cable port, the multi-fiber cable defining a plurality of optical lines that are broken out within the sealed housing;a plurality of remote transceivers in optical communication with the optical lines; anda base transceiver station in optical communication with the multi-fiber cable.3. The cell site of claim 2 , wherein the sealed housing is mounted to a top portion of the tower.4. The cell site of claim 2 , wherein the sealed housing includes a cable spool disposed on an exterior of the sealed housing.5. The cell site of claim 2 , wherein the cell site includes an enclosure in communication with the sealed housing and the base transceiver station.6. The cell site of claim 5 , wherein the enclosure includes a housing defining an interior region claim 5 , a fiber optic cable stub being disposed in the interior region claim 5 , the fiber optic cable stub having a first end portion and an oppositely disposed second end portion claim 5 , the first end portion including a multi-fiber connector claim 5 , the second end portion including a plurality of single fiber connectors.7. The cell site of claim 6 , wherein a connectorized end of a fiber optic cable of the sealed housing is optically connected to the multi-fiber connector in the interior region of the enclosure.8. The cell site of claim 5 , wherein the enclosure includes a housing and a cable spool disposed on an exterior ...

DISTRIBUTED ANTENNA SYSTEM HAVING REMOTE UNITS WITH SCANNING RECEIVERS

The system and method for ameliorating the effect of close-in user equipment up to a point where the user equipment itself limits the performance. The system and method utilizes a digital filter in front of the LASER modulator being applied to the LASER. Additionally, total power detectors may be used at input to prevent unwanted signals from overloading stages in front of the LASER. The system further includes a scanning receiver capable of scanning and analyzing the wide-band signal received from user equipment in the uplink direction. 1. A distributed antenna system (DAS) remote unit (RU) comprising:a radio frequency transceiver (RF) capable of receiving and transmitting RF signals to a plurality of user equipment (UE) transceivers via one or more antennas;a communication channel connected to the one or more antennas and capable of transporting a wideband RF signal to and from the one or more antennas, the wideband RF signal being divided into a plurality of sub-bands, each sub-band carrying traffic of a particular wireless service provider to and from associated UE;an analog to digital converter connected to the communication channel;a digital filter connected to the analog to digital converter;a digital to analog converter connected to the digital filter.2. The RU of claim 1 , further comprising a laser having an electrical power input connected to the digital to analog converter via a modulator and an optical output connected to an optical communication channel.3. The RU of claim 1 , further comprising a front end attenuator connected between the one or more antennas and the analog to digital converter.4. The RU of claim 1 , wherein the digital filter is implemented claim 1 , at least in part claim 1 , in a field programmable gate array (FPGA).5. The RU of claim 4 , wherein the FPGA is programmed to provide an individual level of attenuation to a signal on each of the plurality of sub-bands.6. The RU of claim 1 , further including a scanning receiver connected ...

REDUCING LOCATION-DEPENDENT DESTRUCTIVE INTERFERENCE IN DISTRIBUTED ANTENNA SYSTEMS (DASS) OPERATING IN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) CONFIGURATION, AND RELATED COMPONENTS, SYSTEMS, AND METHODS

Components, systems, and methods for reducing location-dependent destructive interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of separation (i.e., phase, amplitude) in the received MIMO communications signals. Thus, to provide amplitude separation of received MIMO communications signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is amplitude adjusted in one of the polarization states to provide amplitude separation between received MIMO communications signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide amplitude separation. 1. A multiple-input , multiple-output (MIMO) remote unit configured to wirelessly distribute MIMO communications signals to wireless client devices in a distributed antenna system , comprising:a first MIMO transmitter comprising: a first MIMO transmitter antenna configured to transmit MIMO communications signals in a first polarization and a second MIMO transmitter antenna configured to transmit MIMO communications signals in a second polarization different from the first polarization;a second MIMO transmitter comprising a third MIMO transmitter antenna configured to transmit MIMO communications signals in the first polarization and a fourth MIMO transmitter antenna configured to transmit MIMO communications signals in the second polarization; receive a first downlink MIMO communications signal at a first amplitude over a first downlink communications medium, and transmit the first ...

ADAPTIVE DISTRIBUTED ANTENNA SYSTEM CAPABLE OF LOAD BALANCING

An adaptive distributed antenna system comprises a control module coupled between multiple base stations, and multiple antenna groups, each of which includes multiple antenna devices each coupled to the control module via a transmission line, and operable to convert an external wireless signal and a transmitting signal from the transmission line respectively into a receiving signal and a signal to be radiated. The control module converts a downlink signal from any base station and the receiving signal from any transmission line respectively into the transmitting signal and an uplink signal. The control module is configured to establish a transmission link between one base station and one antenna device of the antenna groups. 1. An adaptive distributed antenna system comprising:a plurality of base stations;a plurality of antenna groups each including a transmission line, and a plurality of antenna devices, each of which is coupled to said transmission line and is operable to convert any wireless signal received thereby into a signal serving as a receiving signal to be fed into said transmission line, and to convert any transmitting signal transmitted from said transmission line into a signal to be radiated; anda control module coupled between said base stations and said transmission lines of said antenna groups, said control module being operable to convert a downlink signal from any one of said base stations into a signal serving as the transmitting signal to be fed into said transmission line of one of said antenna groups, and to convert the receiving signal transmitted from said transmission line of anyone of said antenna groups into a signal serving as an uplink signal to be transmitted to one of said base stations for further processing of the uplink signal;wherein said control module is configured to establish a transmission link between at least one of said base stations and at least one of said antenna devices of said antenna groups.2. The adaptive ...

REDUCING LEAKED DOWNLINK INTERFERENCE SIGNALS IN A REMOTE UNIT UPLINK PATH(S) IN A DISTRIBUTED ANTENNA SYSTEM (DAS)

Methods and systems for reducing leaked downlink interference signals in a remote unit uplink path(s) in a distributed antenna system (DAS) are provided. In a remote antenna unit (RAU) disclosed herein, a downlink interference signal may be leaked from a downlink path to an uplink path in the RAU. In this regard, an adjustment circuit is provided in the downlink path of the RAU to suppress the downlink interference signal. A control system is provided in the DAS to monitor the leaked downlink interference signal and control the adjustment circuit in the RAU to minimize the leaked downlink interference signal in the uplink path. By providing the adjustment circuit in the RAU and the control system in the DAS to minimize the leaked downlink interference signal in the uplink path, it is possible to reduce interferences between downlink and uplink communications signals without increasing costs of the RAU. 1. A distributed antenna system (DAS) , comprising:a head-end equipment (HEE) communicatively coupled to a plurality of remote antenna units (RAUs) over at least one downlink communications medium and at least one uplink communications medium; receive the downlink signal from the downlink path and provide the downlink signal to an antenna, wherein the downlink signal comprises at least one downlink communications signal and at least one downlink interference signal; and', 'provide the uplink signal to the uplink path, wherein the uplink signal comprises an uplink communications signal received from the antenna and the at least one downlink interference signal leaked from the downlink path to the uplink path; and, 'wherein at least one RAU among the plurality of RAUs comprises a coupling device coupled to a downlink path configured to carry a downlink signal and an uplink path configured to carry an uplink signal, the coupling device configured to provide the at least one downlink communications signal to the at least one RAU over the at least one downlink ...

LOCAL POWER MANAGEMENT FOR REMOTE ANTENNA UNITS IN DISTRIBUTED ANTENNA SYSTEMS

Power management for remote units in a distributed communication system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide distributed antenna system-related services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to external power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or external power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit. 1. A powered remote unit comprising: at least one electrical-to-optical (E/O) converter configured to convert received uplink radio frequency (RF) communications signals from a coverage area to uplink optical communications signals;', 'an RF communications module configured to receive the uplink RF communications and to provide RF communications services to the coverage area;, 'at least one power-consuming remote unit module comprisingat least one powered port configured to provide power to at least one external power-consuming device connected to the at least one powered port; and determine an available power budget for the at least one powered port; and', 'disable the at least one powered port based on the powered required to power the at least one external power-consuming device connected to the at least one powered port, wherein', 'the controller is configured to determine the available power budget based at least in part upon the power required by the at least one power-consuming remote unit module., 'a controller configured to2. The powered remote unit of ...

Passive optical network device

A passive optical network device comprising a casing, printed circuit board, and fiber optic transceiver system is provided. The fiber optic transceiver system comprises a fiber optic components device, fiber optic transceiver, and RF connector. During operation, the fiber optic components device converts optical signals from the fiber optic transceiver to digital signals, and then transmits the converted digital signals to external electronic systems via the hot-pluggable transceiver connection interface. The fiber optic components device converts digital signals from the external electronic systems to optical signals, and then transmits the optical signals to other external electronic systems via the fiber optic transceiver. The RF connector transmits RF signals from additional external electronic systems to the external electronic systems via the hot-pluggable transceiver connection interface. The RF connector transmits digital signals from the external electronic systems to the additional external electronic systems via the hot-pluggable transceiver connection interface.

POWER MANAGEMENT FOR REMOTE ANTENNA UNITS IN DISTRIBUTED ANTENNA SYSTEMS

Power management for remote units in a wireless distribution system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide communication services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit. 1. A wireless communication system having a coverage area , comprising: at least one electrical-to-optical (E/O) converter configured to convert electrical uplink communications to optical uplink communications;', 'at least one optical-to-electrical (O/E) converter configured to convert optical downlink communications to electrical downlink communications; and', a first communications port connected to and configured to provide power to a first external power-consuming device; and', 'a second communications port;, 'wherein at least one of the plurality of remote units comprises, 'at least one antenna configured to transmit radio frequency (RF) communications services to the coverage area;'}], 'a plurality of remote units distributed over a plurality of floors of a building infrastructure, each of the plurality of remote units comprisinga head end comprising a remote controller communicatively coupled to the plurality of remote units, wherein the remote controller is configured to provide a prioritization of services of the plurality of remote units;at least one riser cable comprising a plurality of optical ...

Providing digital data services as electrical signals and radio-frequency (rf) communications over optical fiber in distributed communications systems, and related components and methods

Distributed communications systems providing and supporting radio frequency (RF) communication services and digital data services, and related components and methods are disclosed. The RF communication services can be distributed over optical fiber to client devices, such as remote units for example. Power can also be distributed over electrical medium that is provided to distribute digital data services, if desired, to provide power to remote communications devices and/or client devices coupled to the remote communications devices for operation. In this manner, as an example, the same electrical medium used to transport digital data signals in the distributed antenna system can also be employed to provide power to the remote communications devices and/or client devices coupled to the remote communications devices. Power may be injected and switched from two or more power sources over selected electrical medium to distribute power for power-consuming components supporting RF communications services and digital data services.

Base station management system and method in next generation mobile communication service

A system for managing a base station in a next generation mobile communication service includes a plurality of remote base stations configured to provide data transmission to a plurality of user terminals in a next generation mobile communication system; a centralized base station configured to perform interlocking among the plurality of remote base stations and perform resource allocation and scheduling for each user terminal; and a remote interlocking element configured to transmit corresponding control and data information to the plurality of remote base stations according to beamforming information and resource allocation information allocated by the centralized base station, and transmit channel information of a user terminal, which is received from the plurality of remote base stations, to the centralized base station.

POWER DISTRIBUTION MODULE(S) CAPABLE OF HOT CONNECTION AND/OR DISCONNECTION FOR WIRELESS COMMUNICATION SYSTEMS, AND RELATED POWER UNITS, COMPONENTS, AND METHODS

Power distribution modules are configured to distribute power to a power-consuming component(s), such as a remote antenna unit(s) (RAU(s)). By “hot” connection and/or disconnection, the power distribution modules can be connected and/or disconnected from a power unit and/or a power-consuming component(s) while power is being provided to the power distribution modules. Power is not required to be disabled in the power unit before connection and/or disconnection of power distribution modules. The power distribution modules may be configured to protect against or reduce electrical arcing or electrical contact erosion that may otherwise result from “hot” connection and/or connection of the power distribution modules. 1. A wireless communication system , comprising: at least one first downlink input configured to receive downlink electrical radio frequency (RF) communications signals; and', 'at least one uplink output configured to receive and communicate uplink electrical RF communications signals;, 'a central unit comprising wherein the one or more O/E converters in one or more of the plurality of RAUs are configured to convert downlink optical RF communications signals received from one or more of the plurality of optical fibers to electrical RF communications signals to be provided to one or more client devices in the one or more coverage areas of the plurality of RAUs; and', 'wherein the one or more E/O converters in one or more of the plurality of RAUs are configured to convert electrical RF communications signals received from the one or more client devices to optical RF communications signals to be provided over one or more of the plurality of optical fibers to the central unit; and, 'a plurality of remote antenna units (RAUs) communicatively coupled to the central unit by an optical fiber link comprising a plurality of optical fibers, each of the plurality of RAUs configured to provide communications to a corresponding coverage area of one or more coverage areas ...

MULTICHANNEL SOFTWARE DEFINED RADIO RECEIVER WITH OPTICALLY ISOLATED ADC

A high speed split receiver interface system for sensing a series of external signals, the system including: a series of remote radio head units for receiving a sensed signal in an analog electric form, each of the remote radio head units converting their sensed signal to a corresponding digital electrical form and then to a corresponding optical data form for dispatch over an optical data interconnection; at least one optical interconnect interconnecting each remote radio head unit with a baseband unit; a first baseband unit interconnecting the series of remote head units corresponding optical interconnects, and including a converter for conversion of the received optical signals to corresponding electrical digital form and down sampling the optical signals to corresponding down sampled signals, a memory store for storing the down sampled signals, and an external network interface for transmission of the saved signals to an external device. 1. A high speed split receiver interface system for sensing a series of external signals , the system including:a series of remote radio head units configured for receiving a sensed signal in an analog electric form, each of the remote radio head units being configured to convert its sensed signal into a corresponding digital electrical form and then into a corresponding optical data form suitable for dispatch over an optical data interconnection;at least one optical interconnect interconnecting each of the remote radio head units with a baseband unit; a converter configured to convert the received optical signals into corresponding electrical digital form and to down sample the optical signals to corresponding down sampled signals;', 'a memory store configured for storing the down sampled signals; and', 'an external network interface configured for transmission of the saved signals to an external device., 'a first baseband unit interconnecting the series of remote radio head units using corresponding optical interconnects, and ...

POWER MANAGEMENT FOR REMOTE ANTENNA UNITS IN DISTRIBUTED ANTENNA SYSTEMS

Power management for remote units in a wireless distribution system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide communication services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit. 1. A method of operating a wireless communications system having a coverage area , comprising:receiving downlink optical digital data signals at a remote unit, the remote unit comprising at least one antenna;receiving downlink optical cellular signals at the remote unit;converting the downlink optical digital data signals to downlink electrical digital data signals in the remote unit;providing the downlink electrical digital data signals to a first communications port;providing the downlink optical cellular signals to a second communications port;receiving the downlink electrical digital data signals at an external access point, the external access point being connected to and powered through the second communications port;providing wireless digital data services in the coverage area from the external access point; andproviding the downlink optical cellular signals to an external cellular device in optical communication with the second communications port.2. The method of claim 1 , further comprising providing wireless cellular services in the coverage area from the external cellular device.3. The method of ...

SELF-OPTIMIZATION OF MOBILE NETWORKS USING A DISTRIBUTED ANTENNA SYSTEM

A telecommunications system includes a distributed antenna system (DAS) having a master unit communicatively coupled to remote antenna units (RAUs) located remotely from the master unit, the master unit communicatively coupled to base stations; and a controller communicatively coupled to the base stations and the DAS. The controller is configured to obtain current base station performance parameter(s) including base station load data or overhead communications data from the base stations; determine an updated configuration for the DAS based on the current base station performance parameter(s), the configuration of the DAS comprising an assignment of the RAUs to one or more coverage zones and an assignment of a zone profile to each of the one or more coverage zones; and adjust the assignment of RAUs to the one or more coverage zones and/or the zone profile of each coverage zone to correspond to the determined updated configuration for the DAS. 1. A telecommunications system , comprising:a distributed antenna system comprising a master unit communicatively coupled to a plurality of remote antenna units located remotely from the master unit, wherein the master unit is communicatively coupled to a plurality of base stations; and obtain one or more current base station performance parameters including base station load data or overhead communications data from the plurality of base stations;', 'determine an updated configuration for the distributed antenna system based on the one or more current base station performance parameters, wherein the configuration of the distributed antenna system comprises an assignment of the plurality of remote antenna units to one or more coverage zones and an assignment of a zone profile to each coverage zone of the one or more coverage zones; and', 'adjust the assignment of the plurality of remote antenna units to the one or more coverage zones and/or the zone profile of each coverage zone to correspond to the determined updated ...

OPTICAL FIBER-BASED DISTRIBUTED RADIO FREQUENCY (RF) ANTENNA SYSTEMS SUPPORTING MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) CONFIGURATIONS, AND RELATED COMPONENTS AND METHODS

Optical fiber-based distributed antenna systems that support multiple-input, multiple-output (MIMO) antenna configurations and communications. Embodiments disclosed herein include optical fiber-based distributed antenna system that can be flexibly configured to support or not support MIMO communications configurations. In one embodiment, first and second MIMO communication paths are shared on the same optical fiber using frequency conversion to avoid interference issues, wherein the second communication path is provide to a remote extension unit to remote antenna unit. In another embodiment, the optical fiber-based distributed antenna systems may be configured to allow to provide MIMO communication configurations with existing components. Existing capacity of system components are employed to create second communication paths for MIMO configurations, thereby reducing overall capacity, but allowing avoidance of frequency conversion components and remote extension units. 1. An apparatus configured to distribute radio-frequency (RF) communications signals in a distributed antenna system in a multiple-input , multiple-output (MIMO) configuration , comprising:at least one first radio interface configured to distribute received first downlink electrical RF communications signals in a first radio band frequency into first downlink electrical RF communications signals;at least one second radio interface configured to distribute received second downlink electrical RF communications signals in the first radio band frequency into second downlink electrical RF communications signals; receive the first downlink electrical RF communications signals from the at least one first radio interface;', 'convert the received first downlink electrical RF communications signals from the at least one first radio interface into first downlink optical RF communications signals;', 'distribute the first downlink optical RF communications signals over optical fiber in a first downlink ...

Wave Division Multiplexer Arrangement for Small Cell Networks

A passive optical network includes a central office providing subscriber signals; a fiber distribution hub including an optical power splitter and a termination field; and a drop terminal. Distribution fibers have first ends coupled to output ports of a drop terminal and second ends coupled to the termination field. A remote unit of a DAS is retrofitted to the network by routing a second feeder cable from a base station to the hub and coupling one the distribution fibers to the second feeder cable. The remote unit is plugged into the corresponding drop terminal port, for example, with a cable arrangement having a sealed wave division multiplexer. 1. A method of retrofitting a remote unit of a Distributed Antenna System to an existing passive optical network including end subscribers coupled to a central office via at least a fiber distribution hub and a drop terminal , the method comprising:providing a distribution cable including a plurality of distribution fibers, each distribution fiber having a first end plugged into a termination field at the fiber distribution hub and a second end coupled to a first output port of the drop terminal, at least some of the distribution fibers being coupled to the central office via a first feeder cable;optically coupling at the termination field a first end of a first of the distribution fibers to a second feeder cable that carries optical signals from a base station so that the optical signals from the base station are carried to the first output port of the drop terminal while another output port of the drop terminal remains connected to one of the end subscribers; andoptically coupling the remote unit to the first output port of the drop terminal so that the remote unit receives the optical signals carried to the first output port by the second feeder cable.2. The method of claim 1 , wherein optically coupling the first end of the first distribution fiber to the second feeder cable comprises:plugging one end of the second ...

PROVIDING SIMULTANEOUS DIGITAL AND ANALOG SERVICES AND OPTICAL FIBER-BASED DISTRIBUTED ANTENNA SYSTEMS, AND RELATED COMPONENTS AND METHODS

Embodiments relate to providing simultaneous digital and analog services in optical fiber-based distributed radio frequency (RF) antenna systems (DASs), and related components and methods. A multiplex switch unit associated with a head-end unit of a DAS can be configured to receive a plurality of analog and digital downlink signals from one or more sources, such as a service matrix unit, and to assign each downlink signal to be transmitted to one or more remote units of the DAS. In one example, when two or more downlink signals are assigned to be transmitted to the same remote unit, a wave division multiplexer/demultiplexer associated with the multiplex switch unit can be configured to wave division multiplex the component downlink signals into a combined downlink signal for remote side transmission and to demultiplex received combined uplink signals into their component uplink signals for head-end side transmission. 1. A system for networking WiFi access points in a distributed antenna system , the system comprising:a plurality of interconnect units (ICUs), wherein the plurality of ICUs are coupled to route signals between the plurality of ICUs;a plurality of remote units (RUs) coupled to the plurality of ICUs and coupled to transport signals between the RUs and ICUs;a plurality of ICU ports and RU ports; and the multiplex switch unit routes digital signals to a plurality of the ICUs and RUs;', 'one or more of the RUs is configured to provide WiFi digital services;', 'the plurality of ICUs are connected by at least one optical fiber; and', 'the plurality of ICUs are connected to the plurality of RUs by at least one optical fiber., 'a multiplex switch unit configured to receive a plurality of analog and digital signals from one or more sources, wherein2. The system of claim 1 , wherein the multiplex switch unit is incorporated in a service unit of the distributed antenna system claim 1 , the service unit further comprising a digital signal processor configured to ...

Optical transmission system, optical receiving apparatus and optical transmission method

There are provided an optical transmission apparatus that subjects a transmission signal including a plurality of sequences to Hadamard transform to obtain a signal in which a predetermined delay is added to one of the sequences, optically modulates the obtained signal, and transmits the modulated signal, and an optical reception apparatus that demodulates a reception signal received from the optical transmission apparatus by subjecting the reception signal to adaptive equalization processing with a predetermined number of taps. The optical reception apparatus includes: an adaptive equalization processing unit that subjects the reception signal to adaptive equalization processing of wavelength distortion compensation with a number of taps obtained by subtracting a number in accordance with the delay from the predetermined number of taps; a delay compensation unit that subjects the reception signal subjected to the wavelength distortion compensation to delay compensation in accordance with the delay; and an inverse Hadamard transform unit that subjects the reception signal subjected to the delay compensation to inverse Hadamard transform.

POWER MANAGEMENT FOR REMOTE ANTENNA UNITS IN DISTRIBUTED ANTENNA SYSTEMS

Power management for remote units in a wireless distribution system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide communication services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit.

DISTRIBUTED ANTENNA SYSTEM ARCHITECTURES

Optical fiber-based wireless systems and related components and methods are disclosed. The systems support radio frequency (RF) communications with clients over optical fiber, including Radio-over-Fiber (RoF) communications. The systems may be provided as part of an indoor distributed antenna system (IDAS) to provide wireless communication services to clients inside a building or other facility. The systems incorporate various functions, such as optical network terminal (ONT), splitter, and local powering, in antenna coverage areas. 1. A wireless communication system , comprising:a head end unit configured to electronically receive and convert input downlink radio frequency (RF) signals received from at least one source to optical downlink RF signals to be distributed on an optical communication path comprising a plurality of optical fiber cables and at least one splitter component;an optical line terminal (OLT) configured to receive and distribute optical multiplexed data signals on the optical communication path;at least one optical network terminal (ONT) component located proximate to at least one remote unit and configured to demultiplex the optical multiplexed data signals into component parts; an optical-to-electrical converter configured to convert the received optical downlink RF signals to output electrical downlink RF signals; and', 'an antenna system configured to distribute the output electrical downlink RF signals into a respective coverage area of the remote unit; and, 'a plurality of remote units each coupled to the head end unit and the OLT by the optical communication path to receive the optical downlink RF signals and the optical multiplexed data signals from the head end unit and the OLT, each remote unit of the plurality of remote units configured to receive power delivered from an electrical power source located in a respective coverage area of one or more of the plurality of the remote units, wherein each remote unit comprisesan electrically ...

Supporting remote unit uplink tests in a distributed antenna system (das)

Methods and systems for supporting remote unit uplink tests in a distributed antenna system (DAS) are disclosed. In this regard, in one aspect, a centralized test signal generator is provided in the DAS to generate uplink test signals for one or more remote antenna units (RAUs) under test (RUTs). By providing the uplink test signals to the one or more RUTs from the centralized test signal generator, it is possible to perform uplink tests more efficiently with reduced equipment cost. The uplink test signals are distributed to the one or more RUTs over a downlink communications medium of the DAS. In another aspect, the one or more RUTs return the uplink test signals to a signal monitor over an uplink communications medium of the DAS, whereby uplink performance of the one or more RUTs can be examined to help optimize the DAS to improve quality of service (QoS).

POWER MANAGEMENT FOR REMOTE ANTENNA UNITS IN DISTRIBUTED ANTENNA SYSTEMS

Power management for remote units in a wireless distribution system. Power can be managed for a remote unit configured to power modules and devices that may require more power to operate than power available to the remote unit. For example, the remote unit may be configured to include power-consuming remote unit modules to provide communication services. As another example, the remote unit may be configured to provide power through powered ports in the remote unit to power-consuming devices. Depending on the configuration of the remote unit, the power-consuming remote unit modules and/or power-consuming devices may demand more power than is available at the remote unit. In this instance, the power available at the remote unit can be distributed to the power-consuming modules and devices based on the priority of services desired to be provided by the remote unit. 1. A remote unit for providing wireless services in a wireless communication system having a coverage area , comprising:at least one antenna configured to transmit radio frequency (RF) communications services to the coverage area;a transport optical sub-assembly configured to convert downlink optical digital signals to downlink electrical digital signals;a receive optical sub-assembly configured to convert uplink electrical digital signals to uplink optical digital signals;a first communications port coupled to the transport optical sub-assembly and coupled to the receive optical sub-assembly;a first external device connected to and powered through the first communications port, wherein the first external device is configured to provide digital data services (DDS) in the coverage area; anda second communications port configured to provide downlink optical RF communications to a second external device over at least one optical fiber.2. The remote unit of claim 1 , wherein the remote unit is configured to enable power for one or more of the first communications port and the second communications port based on ...

ATTENUATION SYSTEMS WITH COOLING FUNCTIONS AND RELATED COMPONENTS AND METHODS

Attenuation systems have cooling components that produce power in response to heat generated by the attenuator. The cooling components can be used to power cooling fans if a primary power source of the fans fails. 1. A communication system , comprising:a signal source;a system communicatively coupled to the signal source in order to receive signals from the source, the system including remote units configured to wirelessly transmit RF signals into a respective coverage area and to receive wireless RF signals from the coverage area; and an attenuator configured to attenuate signals;', 'a thermoelectric cooling component configured to absorb heat generated by the attenuator and to generate electrical current in response to the heat; and', 'a cooling device in electrical communication with the thermoelectric cooling component and arranged to cool the attenuator when powered by the thermoelectric cooling component., 'an attenuation system interposed between the signal source and the system to attenuate signals from the source, the attenuation system comprising2. The communication system of claim 1 , wherein the thermoelectric cooling component comprises a plurality of thermoelectric modules configured to generate electrical current in response to heat flow.3. The communication system of claim 2 , wherein the thermoelectric modules comprise a first semiconductor of a first electron density and a second semiconductor of a second electron density different than the first electron density.4. The communication system of claim 3 , wherein the first semiconductor is a p-type semiconductor and the second semiconductor is an n-type semiconductor.5. The communication system of claim 1 , wherein the cooling device comprises at least one fan.6. The communication system of claim 1 , wherein the cooling device is coupled to a power source claim 1 , and wherein the thermoelectric cooling component is configured to provide electric power to the cooling device when the power source ...

SAFETY POWER DISCONNECTION FOR POWER DISTRIBUTION OVER POWER CONDUCTORS TO POWER CONSUMING DEVICES

Safety power disconnection for remote power distribution in power distribution systems is disclosed. The power distribution system includes one or more power distribution circuits each configured to remotely distribute power from a power source over current carrying power conductors to remote units to provide power for remote unit operations. A remote unit is configured to decouple power from the power conductors thereby disconnecting the load of the remote unit from the power distribution system. A current measurement circuit in the power distribution system measures current flowing on the power conductors and provides a current measurement to the controller circuit. The controller circuit is configured to disconnect the power source from the power conductors for safety reasons in response to detecting a current from the power source in excess of a threshold current level indicating a load. 1. A remote antenna unit , comprising:a remote power input coupled to a power conductor carrying current from a power distribution circuit; the remote switch circuit configured to be closed to couple to the remote power input; and', 'the remote switch circuit further configured to be opened to decouple from the remote power input;, 'a remote switch circuit comprising a remote switch input configured to receive a remote power connection signal;'}a switch control circuit coupled to the remote switch circuit and configured to periodically open the remote switch circuit to decouple from the remote power input; andat least one antenna, wherein distribute one or more downlink communications signals received from one or more downlink communications links, to one or more client devices; and', 'distribute one or more uplink communications signals from the one or more client devices to one or more uplink communications links., 'the remote antenna unit is configured to2. The remote antenna unit of claim 1 , wherein the antenna distributes the one or more downlink communications signals and ...

Cellular Fiber Monitoring Module

A cellular fiber monitoring module (CFMM) for a remote cellular tower site is implemented by providing monitoring for fiber connections between mobile carrier's broadcast ground equipment and its corresponding antenna equipment located on the cellular tower. Each monitoring module includes a fiber optic monitor pass though module which integrates the necessary monitoring data for each base transceiver station (BTS) equipment including, fiber port pass/fail status, peak to peak level measurement, optical degradation, BTS fault status, etc. The CFMM can be used as a stand-alone device or integrated into an on-site monitoring system. 1. A system comprised of a cellular fiber monitoring module (CFMM) connected between a mobile carrier's base transceiver station (BTS) equipment located at ground level within a cellular tower site and the corresponding remote radio head (RRH) located on the same tower. Said fiber monitoring module is configured to monitor the fiber for signal for faults as it passing through the device.2. The system as recited in claim 1 , wherein pass/fail status of the fiber data connection are monitored.3. The system as recited in claim 1 , wherein peak to peak levels with the fiber connection are monitored.4. The system as recited in claim 1 , wherein fiber degradation is monitored.5. The system as recited in claim 1 , wherein carrier's base transceiver station fault output is monitored. This Application is a continuation-in-part of, and claims priority under 35 U.S.C § 120 to co-pending U.S. patent application Ser. No. 14/157,775 filed Jan. 17, 2014, which is incorporated by reference for all purposes.The present invention relates to the method of monitoring fiber connections at a cellular tower site. More particularly, the connection between the carrier's base transceiver station (BTS) and the remote radio head (RRH).The fiber connection between a mobile carriers base transceiver station (BTS) and the remote radio head (RRH) are a vital part of ...

DETERMINING PROPAGATION DELAY OF COMMUNICATIONS IN DISTRIBUTED ANTENNA SYSTEMS, AND RELATED COMPONENTS, SYSTEMS, AND METHODS

Components, systems, and methods for determining propagation delay of communications in distributed antenna systems are disclosed. The propagation delay of communications signals distributed in the distributed antenna systems is determined. If desired, the propagation delay(s) can be determined on a per remote antenna unit basis for the distributed antenna systems. The propagation delay(s) can provided by the distributed antenna systems to a network or other system to be taken into consideration for communications services or operations that are based on communications signal delay. As another non-limiting example, propagation delay can be determined and controlled for each remote antenna unit to uniquely distinguish the remote antenna units. In this manner, the location of a client device communicating with a remote antenna unit can be determined within the communication range of the remote antenna unit. 1. A communications system , comprising: at least one downlink radio frequency (RF) interface configured to receive downlink RF signals from a base station and distribute the downlink RF signals over at least one downlink communications medium to one or more remote antenna units (RAUs) to be communicated to one or more client devices;', 'at least one uplink RF interface configured to receive uplink RF signals over at least one uplink communications medium from the one or more RAUs communicated by the one or more client devices to the one or more RAUs; and', 'a propagation delay generator configured to add propagation delay to the at least one uplink communications medium;, 'a distributed antenna system, comprisingat least one propagation delay measurement circuit communicatively coupled to the at least one downlink RF interface and the at least one uplink RF interface, the at least one propagation delay measurement circuit configured to measure propagation delay of the received uplink RF signals from the one or more client devices by the at least one uplink RF ...

SYSTEM AND METHOD FOR PERFORMANCE OPTIMIZATION IN AND THROUGH A DISTRIBUTED ANTENNA SYSTEM

A method for operating a Distributed Antenna System (DAS) includes providing a plurality of Digital Remote Units (DRUs), each configured to send and receive wireless radio signals and providing a plurality of inter-connected Digital Access Units (DAUs), each configured to communicate with at least one of the plurality of DRUs via optical signals and each being coupled to at least one sector of a base station. The method also includes providing a plurality of sensors operable to detect activity at each of the plurality of DRUs, turning off a DRU downlink signal at one of the plurality of DRUs in response to an output from one of the plurality of sensors, and turning on a DRU downlink signal at another of the plurality of DRUs in response to an output from another of the plurality of sensors. 1. A method for operating a Distributed Antenna System (DAS) , the method comprising:providing a plurality of Digital Remote Units (DRUs), each configured to send and receive wireless radio signals;providing a plurality of inter-connected Digital Access Units (DAUs), each configured to communicate with at least one of the plurality of DRUs via optical signals and each being coupled to at least one sector of a base station;providing a plurality of sensors operable to detect activity at each of the plurality of DRUs;turning off a DRU downlink signal at one of the plurality of DRUs in response to an output from one of the plurality of sensors; andturning on a DRU downlink signal at another of the plurality of DRUs in response to an output from another of the plurality of sensors.2. The method of wherein each of the plurality of DAUs is configured to communicate with the at least one of the plurality of DRUs by sending and receiving signals over at least one of an optical fiber claim 1 , an Ethernet cable claim 1 , microwave line of sight link claim 1 , wireless link claim 1 , or satellite link.3. The method of wherein the plurality of inter-connected DAUs comprises a first DAU ...

REDUCING LOCATION-DEPENDENT INTERFERENCE IN DISTRIBUTED ANTENNA SYSTEMS OPERATING IN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) CONFIGURATION, AND RELATED COMPONENTS, SYSTEMS, AND METHODS

Components, systems, and methods for reducing location-based interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of spatial (i.e., phase) separation in the received MIMO communications signals. Thus, to provide phase separation of received MIMO communication signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is phase shifted in one of the polarization states to provide phase separation between received MIMO communication signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide phase separation. 1. A multiple-input multiple-output (MIMO) remote unit configured to wirelessly distribute MIMO communications signals to wireless client devices , comprising: receive a first downlink MIMO communications signal in a first phase over a first downlink communications medium, and wirelessly transmit the first downlink MIMO communications signal in a first polarization to a wireless client device; and', 'receive a second downlink MIMO communications signal in the first phase over a second downlink communications medium, and wirelessly transmit the second downlink MIMO communications signal in a second polarization different from the first polarization to the wireless client device; and, 'a first MIMO transmitter configured to receive a third downlink MIMO communications signal in the first phase over a third downlink communications medium, and wirelessly transmit the third downlink MIMO communications signal in the first ...

Unified optical fiber-based distributed antenna systems (dass) for supporting small cell communications deployment from multiple small cell service providers, and related devices and methods

Unified optical fiber-based distributed antenna systems (DASs) for supporting small cell communications deployment from multiple small cell service providers are disclosed. The unified optical fiber-based DASs disclosed herein are configured to receive multiple small cell communications from different small cell service providers to be deployed over optical fiber to small cells in the DAS. In this manner, the same DAS architecture can be employed to distribute different small cell communications from different small cell service providers to small cells. Use of optical fiber for delivering small cell communications can reduce the risk of having to deploy new cabling if bandwidth needs for future small cell communication services exceeds conductive wiring capabilities. Optical fiber cabling can also allow for higher distance cable runs to the small cells due to the lower loss of optical fiber, which can provide for enhanced centralization services.

Bi-directional transceiver with time synchronization

A system or a network may include an optoelectronic module that includes an optical transmitter optically coupled with an optical fiber, and a controller communicatively coupled to the optical transmitter. The controller may be configured to operate the optical transmitter to transmit data signals through the optical fiber. The optoelectronic module may be configured to transmit time synchronization signals through the optical fiber along with the data signals.

METHODS AND SYSTEMS FOR DISTRIBUTING FIBER OPTIC TELECOMMUNICATION SERVICES TO LOCAL AREAS AND FOR SUPPORTING DISTRIBUTED ANTENNA SYSTEMS

A fiber optic network includes a fiber distribution hub including at least one splitter and a termination field; a plurality of drop terminals optically connected to the fiber distribution hub by a plurality of distribution cables; and a distributed antenna system (DAS). The DAS includes a base station and a plurality of antenna nodes. The base station is optically connected to the fiber distribution hub and the antenna nodes are optically connected to the drop terminals. Example splitters include a passive optical power splitter and a passive optical wavelength splitter. Signals from a central office can be routed through the passive optical power splitter before being routed to subscriber locations optically connected to the drop terminals. Signals from the base station can be routed through the wavelength splitter before being routed to the antenna nodes. 13-. (canceled)4. A fiber distribution hub comprising:a cabinet defining an interior;a termination field disposed within the interior of the cabinet, the termination field including fiber optic adapters; anda splitter region disposed within the interior of the cabinet;a plurality of splitter modules disposed at the splitter region, each of the plurality of splitter modules outputting signals onto connectorized pigtails extending outwardly from the splitter, each of the connectorized pigtails being received at the termination field when in use, the plurality of splitter modules including a passive optical power splitter and a passive wavelength splitter.5. The fiber distribution hub of claim 4 , further comprising an input cable routed into the interior of the cabinet claim 4 , the input cable having an optical fiber routed to an input of the passive optical power splitter.6. The fiber distribution hub of claim 4 , further comprising an input cable routed into the interior of the cabinet claim 4 , the input cable having an optical fiber routed to an input of the passive wavelength splitter.7. The fiber ...

Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (dass)

Monitoring non-supported wireless spectrum within a coverage area of a distributed antenna system (DAS) in which a listening module connected to a remote unit of the DAS monitors non-supported wireless frequencies (i.e., frequencies that are outside the frequency ranges supported by the downlink and uplink signals of the DAS), via one or more antennas. The listening module also transmits the wireless frequencies to a monitoring module connected to head-end equipment (HEE) of the DAS. In that manner, a monitoring module can use an existing DAS infrastructure to monitor non-supported portions of the wireless spectrum at remote locations. In addition to avoiding the need to run a parallel DAS infrastructure, the disclosed arrangements are also useful in shared spectrum environments and other environments where efficient spectrum utilization is desired.

METHOD AND AN APPARATUS FOR TRANSITIONING BETWEEN OPTICAL NETWORKS

Aspects of the subject disclosure may include, for example, receiving a first optical signal from a first optical network via a first port of the wavelength converter, receiving a second optical signal from a second optical network via a second port of the wavelength converter, modulating the first optical signal with the second light signal to generate a third optical signal, eliminating the first light signal from the third optical signal to generate a fourth optical signal, and transmitting the fourth optical signal through the second optical network. The first optical signal can include a first digital signal modulated onto a first light signal of a first wavelength, the second optical signal can include a second light signal can include a second wavelength different from the first wavelength, and the fourth optical signal can include the first digital signal modulated onto the second light signal. Other embodiments are disclosed. 1. A method , comprising:receiving, by a wavelength converter of an optical communication system, a first optical signal of a first optical network of the optical communication system, wherein the first optical signal comprises a first digital signal modulated onto a first light signal, wherein the first light signal comprises a first wavelength, wherein the first optical signal is optically coupled to the first optical network, wherein the first optical network comprises a gray optical network;selecting, by a switch of the optical communication system, a second light signal of a plurality of light signals of a plurality of wavelengths optically coupled a second optical network of the optical communication network according to a user input to the switch, wherein the second optical network comprises a colored optical network, and wherein the second light signal comprises a second wavelength of the plurality of wavelengths;receiving, by the wavelength converter of the optical communication system, the second light signal of the plurality ...

TRANSMISSION DEVICE, TRANSMISSION METHOD, RECEPTION DEVICE, AND RECEPTION METHOD

A transmission device includes a symbol generator that generates a modulation symbol by mapping transmission data to a signal point arranged in a two-dimensional or three-dimensional color space; and an outputter that outputs an optical signal modulated according to the modulation symbol. 1. A transmission device , comprising:a symbol generator that generates a modulation symbol by mapping transmission data to a signal point arranged in a two-dimensional or three-dimensional color space; andan outputter that outputs an optical signal modulated according to the modulation symbol.2. A transmission method implemented in a transmission device , the transmission method comprising:generating a modulation symbol by mapping transmission data to a signal point arranged in a two-dimensional or three-dimensional color space; andoutputting, from an outputter included in the transmission device, an optical signal modulated according to the modulation symbol.3. A reception device , comprising:a light receiver generates a reception signal by receiving an optical signal via a plurality of light receiving elements; anda demodulator that generates reception data by demapping and decoding the reception signal, symbol-by-symbol, as a signal in a two-dimensional or three-dimensional color space.4. A reception method implemented in a reception device , the reception method comprising:generating a reception signal by receiving an optical signal via a plurality of light receiving elements; andgenerating reception data by demapping and decoding the reception signal, symbol-by-symbol, as a signal in a two-dimensional or three-dimensional color space. This application is a U.S. continuation application of PCT International Patent Application Number PCT/JP2018/016231 filed on Apr. 20, 2018, claiming the benefit of priority of U.S. Provisional Patent Application No. 62/491,306 filed on Apr. 28, 2017, U.S. Provisional Patent Application No. 62/518,074 filed on Jun. 12, 2017, and U.S. Provisional ...

REMOTELY RECONFIGUREABLE DISTRIBUTED ANTENNA SYSTEM AND METHODS

The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc. 1. (canceled)2. (canceled)3. A method for routing and switching signals comprising:providing a plurality of remote radio units, each remote radio unit configured to transmit one or more downlink signals and to receive one or more uplink signals;providing at least one digital access unit configured to communicate with the plurality of remote radio units;translating the uplink and downlink signals between RF and base band;packetizing the uplink and downlink base band signals, wherein the packetized signals correspond to a plurality of carriers, each remote radio unit configured to receive or transmit a respective subset of the plurality of carriers;routing and switching the packetized signals among the plurality of remote radio units via the at least one digital access unit;reconfiguring at least one of the plurality of remote radio units by increasing or decreasing the number of carriers in the respective subset of the plurality of carriers; and thereafterrouting and switching the packetized signals among the plurality of remote radio units via the at least one digital access unit according to a result of the reconfiguring.4. The method of wherein each carrier corresponds to a respective RF band.5. The method of wherein reconfiguring each remote radio unit further ...

Link Group Configuration Method and Device

A link group configuration method includes obtaining first status information of M links between a source end device and a receive end device, where the first status information indicates a status of a differential delay between any two of the M links, obtaining first capability information of the receive end device, where the first capability information indicates a first capability of performing differential delay compensation on the M links by the receive end device, grouping N of the M links into a first link group based on the first status information and the first capability information, and sending first configuration information to a second device, where the first configuration information includes information used to indicate the first link group. 1. A link group configuration method , implemented by a first device , comprising:obtaining first status information of M links between a source end device and a receive end device, wherein the first status information indicates a status of a differential delay between two links of the M links, wherein each of the M links is either a flexible Ethernet (FlexE) physical connection link or a flexible optical transport network (FlexO) physical connection link, and wherein M is an integer greater than or equal to two;obtaining first capability information of the receive end device, wherein the first capability information indicates a first capability of performing differential delay compensation on the M links by the receive end device;grouping N links of the M links into a first link group based on the first status information and the first capability information, wherein N is an integer less than or equal to M and greater than or equal to two; andsending first configuration information to a second device, wherein the first configuration information comprises information indicating the first link group.2. The link group configuration method of claim 1 , wherein the first device is the receive end device claim 1 , ...

CABLING CONNECTIVITY MONITORING AND VERIFICATION

Connectivity between components in a system is monitored by applying a low voltage at one end of an RF cable, interpreted as a “0” logical state, and determining whether a similar voltage appears at the other end of the cable. If the cable is connected properly, the DC voltage applied at one end will appear at the other end and a proper indication is generated. If the expected voltage level does not appear at the other side, it means that RF connection was not correctly established and an alert is generated. Test systems for testing connectivity may include a first component comprising at least one port, at least one capacitor, and at least one resistor for providing high impedance. A controller provides a first logic state to the at least one port, scans multiple input ports of the system, and records a link corresponding to the applied first logic state. 1. A method of testing a system having plurality of components , each component having at least one port , and a plurality of cables connected to one or more ports of the plurality of components , the method comprising:applying a first logic state to a first port of a first component of the plurality components;scanning multiple input ports of the plurality components; andrecording a link corresponding to the applied first logic state at the first port of the first component.2. The method of claim 1 , wherein the first logic state is a logic “0” state.3. The method of claim 1 , further comprising:applying a second logic state to a second port of a second component of the plurality of components;scanning multiple ports of the system; andrecording a link corresponding to the applied second logic state at the second port of the second component.4. The method of claim 1 , wherein the steps of applying claim 1 , scanning claim 1 , and recording are performed for each port of each component of the system.5. The method of claim 1 , wherein the plurality of components comprises at least a first claim 1 , a second claim 1 ...

OPTICAL FIBER-BASED DISTRIBUTED ANTENNA SYSTEMS, COMPONENTS, AND RELATED METHODS FOR MONITORING AND CONFIGURING THEREOF

Optical fiber-based wireless systems and related components and methods support radio frequency (RF) communications with clients over optical fiber, including Radio-over-Fiber (RoF) communications. The systems may be provided as part of an indoor distributed antenna system (IDAS) to provide wireless communication services to clients inside a building or other facility. The communications can be distributed between a head end unit (HEU) that receives carrier signals from one or more service or carrier providers and converts the signals to RoF signals for distribution over optical fibers to end points, which may be remote antenna units (RAUs). A microprocessor-based control system or systems may also be employed. The control systems may include one or more microprocessors or microcontrollers in one or more of the components of the system that execute software instructions to control the various components and provide various features for the optical fiber-based distributed antenna systems. 1. A wireless communication system , comprising: a downlink base transceiver station (BTS) interface configured to receive downlink electrical radio frequency (RF) signals from at least one BTS on at least one communication downlink;', receive and convert the downlink electrical RF signals from the downlink BTS interface into downlink Radio-over-Fiber (RoF) signals on the at least one communication downlink; and', 'receive and convert uplink RoF signals from at least one remote antenna unit (RAU) into uplink electrical RF signals on at least one communication uplink;, 'at least one optical interface module (OIM) configured to, 'an uplink BTS interface configured to receive and communicate the uplink electrical RF signals from the at least one communication uplink to the at least one BTS; and, 'communication components, comprisinga controller configured to predict the failure of at least one of the communications components based on receiving alarm information from at least one of ...

Remotely reconfigurable distributed antenna system and methods

The present disclosure is a novel utility of a software defined radio (SDR) based Distributed Antenna System (DAS) that is field reconfigurable and support multi-modulation schemes (modulation-independent), multi-carriers, multi-frequency bands and multi-channels. The present disclosure enables a high degree of flexibility to manage, control, enhance, facilitate the usage and performance of a distributed wireless network such as flexible simulcast, automatic traffic load-balancing, network and radio resource optimization, network calibration, autonomous/assisted commissioning, carrier pooling, automatic frequency selection, frequency carrier placement, traffic monitoring, traffic tagging, pilot beacon, etc.

Distributed Outdoor Network Apparatus and Methods

Tools and techniques for providing robust wireless distribution of communications signals from a provider. Certain embodiments comprise one or more modular communications apparatuses. The modular communications apparatuses feature an enclosure which is, at least in part, transparent to radio frequencies. A modular communications apparatus also typically includes one or more communications radios or transmitter/receiver devices within the enclosure. The apparatus also includes at least one and possibly more than one antenna located within the enclosure along with wire or cable-based signal output apparatus. 1. A modular communications apparatus comprising:a housing comprising multiple vertically stacked housing modules, wherein at least a first housing module of the vertically stacked housing modules is transparent to radio frequencies;a communications radio located within a second module of the multiple vertically stacked housing modules;an antenna located within the first housing module; anda base supporting the multiple vertically stacked housing modules.2. The modular communications apparatus of where only the uppermost housing module is transparent to radio frequencies.3. The modular communications apparatus of further comprising multiple integrated height extension joints connecting adjacent housing modules.4. The modular communications apparatus of further comprising a wired communications switch within a housing module claim 1 , having a wired signal output claim 1 , wherein the wired communications switch comprises at least one of an Ethernet switch and a mini D-SLAM.5. The modular communications apparatus of further comprising a fiber management module within one of housing modules configured to receive an optical communications signal input claim 1 , wherein the fiber management module is further configured to provide optical communications output over an optical fiber.6. The modular communications apparatus of claim 1 , wherein the communications radio ...

Cellular communication system

An analog distributed antenna system having a set of small cells as a signal source is provided. A proposed cellular communication system includes an upper small cell unit including upper protocol processors configured to process an upper first part of a protocol stack of a small cell, a lower small cell unit including lower protocol processors configured to process a remaining second part of the protocol stack of the small cell, and a first matching switch configured to respectively match the lower protocol processors to a plurality of remote units. According to one aspect, the cellular communication system includes a common controller configured to control activation of the plurality of upper protocol processors of the upper small cell unit and the plurality of lower protocol processors of the lower small cell unit according to a required service capacity and appropriately control an operation of the first matching switch.

PROTECTION FOR DISTRIBUTED RADIO ACCESS NETWORKS

The invention relates to a distributed radio access network communicatively coupled to a core network, and a method for upholding a service in case of a failure in the distributed radio access network. The distributed radio access network comprises a main radio equipment controller communicatively coupled to at least one remote radio unit over a main optical path, a backup radio equipment controller communicatively coupled to the main radio equipment controller for synchronization, and a protection optical path for communicatively coupling the at least one remote radio unit to the backup radio equipment controller in case of a failure in communication between the main radio equipment controller and the at least one remote radio unit over the main optical path such that a service remains running when the failure occurs. 1. A distributed radio access network , arranged for communicatively coupling to a core network , the distributed radio access network comprising:a main radio equipment controller communicatively coupled to at least one remote radio unit over a main optical path;a backup radio equipment controller communicatively coupled to the main radio equipment controller for synchronization; anda protection optical path for communicatively coupling the at least one remote radio unit to the backup radio equipment controller in case of a failure in communication between the main radio equipment controller and the at least one remote radio unit over the main optical path, such that a service remains running when the failure occurswherein the protection optical path is longer than the main optical path and comprises a transmission capacity which is smaller than a transmission capacity over the main optical path such that in case of the failure in communication over the main optical path the backup radio equipment controller is configured to negotiate with the at least one remote radio unit a reduction in at least one out of a plurality of predefined parameters.2. The ...

DATA TRANSPORT IN A VIRTUALIZED DISTRIBUTED ANTENNA SYSTEM

A system for routing signals in a Distributed Antenna System (DAS) includes one or more local Digital Access Units (DAUs) located at a local location and one or more remote DAUs located at one or more remote locations. Each of the one or more local DAUs includes an optical port coupled to an upstream unit. The upstream unit includes at least one of a repeater, a baseband unit, a Base Transceiver Station (BTS), or a DAU. The one or more remote DAUs are coupled to the one or more local DAUs via one or more optical cables. A distance between the local location and each of the one or more remote locations is greater than two kilometers. 1. A system for routing signals in a Distributed Antenna System (DAS) , the system comprising:one or more local Digital Access Units (DAUs) located at a local location, each of the one or more local DAUs including an optical port coupled to an upstream unit and a radio frequency (RF) port configured to receive signals; andone or more remote DAUs located at one or more remote locations, wherein the one or more remote DAUs include at least one optical port are coupled to the one or more local DAUs via one or more optical cables coupled to the at least one optical port, and wherein each of the remote DAUs includes an RF port configured to send and receive signals.2. The system of claim 1 , wherein the one or more local DAUs are configured to communicate with the one or more remote DAUs via the one or more optical cables.3. The system of claim 1 , wherein the one or more remote DAUs are configured to communicate with the one or more local DAUs via the one or more optical cables.4. The system of claim 1 , wherein each of the one or more local DAUs is configured to receive signals via an RF cable coupled to the RF port and transmit the signals to the one or more remote DAUs via the one or more optical cables.5. The system of claim 1 , wherein each of the one or more remote DAUs is configured to receive signals via an RF cable coupled to the RF ...

FLEXIBLE HEAD-END CHASSIS SUPPORTING AUTOMATIC IDENTIFICATION AND INTERCONNECTION OF RADIO INTERFACE MODULES AND OPTICAL INTERFACE MODULES IN AN OPTICAL FIBER-BASED DISTRIBUTED ANTENNA SYSTEM (DAS)

Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules (RIMs) and optical interface modules (OIMs) in an optical fiber-based distributed antenna system (DAS) are disclosed. In one embodiment, the flexible head-end chassis includes a plurality of module slots each configured to receive either a RIM or an OIM. A chassis control system identifies an inserted RIM or OIM to determine the type of module inserted. Based on the identification of the inserted RIM or OIM, the chassis control system interconnects the inserted RIM or OIM to related combiners and splitters in head-end equipment for the RIM or OIM to receive downlink communication signals and uplink communications signals for processing and distribution in the optical fiber-based DAS. In this manner, the optical fiber-based DAS can easily be configured or reconfigured with different combinations of RIMs and OIMs to support the desired communications services and/or number of remote units. 1. A head-end chassis for an optical fiber-based distributed antenna system (DAS) , comprising:a housing;a plurality of module slots disposed in the housing, each module slot among the plurality of module slots configured to receive a connected module comprised of a radio interface module (RIM) or an optical interface module (OIM); [ a backplane downlink input configured to receive an electrical downlink communications signal from a RIM;', 'a backplane downlink output configured to provide an electrical split downlink communications signal to an OIM;', 'a backplane uplink input configured to receive an electrical uplink communications signal from an OIM; and', 'a backplane uplink output configured to provide an electrical split uplink communications signal to a RIM;, 'each backplane interconnect among the plurality of backplane interconnects comprises, 'a plurality of backplane interconnects each associated with a module slot among the plurality of module slots, each ...

Supporting an add-on remote unit (ru) in an optical fiber-based distributed antenna system (das) over an existing optical fiber communications medium using wavelength division multiplexing (wdm)

Embodiments disclosed in the detailed description include supporting an add-on remote unit(s) (RU) in an optical fiber-based distributed antenna system (DAS) over existing optical fiber communication medium using wavelength division multiplexing (WDM). An existing DAS comprises at least one existing head end equipment (HEE) communicatively coupled to a plurality of existing RUs through an optical fiber communication medium. In aspects disclosed herein, an add-on RU is added to the existing DAS to support additional wireless communications. No new optical fibers are required to be deployed to support communications to the add-on RU in the DAS. Instead, the DAS is configured to support the add-on RU through the existing optical fiber communication medium using WDM. Thus, the add-on RU can be added to the existing DAS without adding new optical fibers, thus leading to reduced service disruptions and deployment costs.

CONNECTION MAPPING IN DISTRIBUTED COMMUNICATION SYSTEMS

Power management techniques in distributed communication systems are disclosed. Related components, systems, and methods are also disclosed. In embodiments disclosed herein, the power available at a remote unit (RU) is measured and compared to the power requirements of the RU. In an exemplary embodiment, voltage and current is measured for two dummy loads at the RU and these values are used to solve for the output voltage of the power supply and the resistance of the wires. From at these values, a maximum power available may be calculated and compared to power requirements of the RU. 1. A remote unit for use in a distributed communication system , comprising:an antenna capable of transmitting into a coverage area;a power port configured to receive a direct current (DC) power signal from a power distribution module through a power medium;an alternating current (AC) filter coupled to the power port configured to filter out AC signals from the DC power signal and provide DC power to the remote unit;a DC filter coupled to the power port and configured to filter out the DC power signal from AC signals received from the power medium;an AC test signal detection circuit coupled to the DC filter and configured to detect an AC test signal arriving at the power port from the power medium; and 'generate a response for transmission to a master controller on detection of the AC test signal.', 'a slave controller coupled to the AC test signal detection circuit and configured to2. The remote unit of claim 1 , wherein the slave controller is further configured to receive a management signal from the master controller claim 1 , wherein the management signal contains information relating to the AC test signal.3. The remote unit of claim 2 , further comprising a management signal port distinct from the power port.4. The remote unit of claim 3 , wherein the remote unit is uniquely addressable within the distributed communication system.5. The remote unit of claim 4 , further comprising ...

COMMUNICATION DEVICE DESIGNED FOR INTERIOR COMPARTMENTS, PARTICULARLY OF MOTOR VEHICLES

A communication device designed for an interior compartment, for example of a motor vehicle. The device includes a radiofrequency communication module and an interface module which is operationally coupled to the radiofrequency communication module in order to receive a digital signal generated by the radiofrequency communication module, and to modulate an electric power supply signal for at least one lamp, according to the digital signal, in order to generate a modulation of light emitted by the lamp according to the digital signal received from the radiofrequency communication module. 1. A communication device , comprising:a radiofrequency communication module, comprising a processor, a non-transitory computer-readable memory operationally coupled to the processor, and a transceiver for transmitting and receiving radiofrequency signals, wherein the processor is configured so as to generate a digital signal from radiofrequency signals received by way of the transceiver, andan interface module operationally coupled to the radiofrequency communication module so as to:receive the digital signal generated by the radiofrequency communication module, and configured so as tomodulate, on the basis of the digital signal, an electrical signal to supply power to at least one lamp, to produce a modulation of light emitted by the lamp on the basis of the digital signal received from the radiofrequency communication module.2. The communication device as claimed in claim 1 , furthermore comprising the at least one lamp claim 1 , which is connected to the interface module.3. The communication device as claimed in claim 1 , furthermore including an electrical connection unit connectable to an electric power outlet.4. The communication device as claimed in claim 3 , wherein the electrical connection unit is configured to be connected to a cigarette-lighter outlet of a motor vehicle passenger compartment.5. The communication device as claimed in claim 1 , configured to be implemented ...

SYSTEMS AND METHODS FOR BUILDING WIRELESS MESH NETWORKS

Disclosed herein is a system comprising a set of wireless communication nodes that are configured to operate as part of a wireless mesh network. Each respective wireless communication node may be directly coupled to at least one other wireless communication node via a respective short-hop wireless link, and at least a first pair of wireless nodes may be both (a) indirectly coupled to one another via a first communication path that comprises one or more intermediary wireless communication nodes and two or more short-hop wireless links and (b) directly coupled to one another via a first long-hop wireless link that provides a second communication path between the first pair of wireless communication nodes having a lesser number of hops than the first communication path. A fiber access point may be directly coupled to a first wireless communication node of the set of wireless communication nodes. 1. A communication system comprising:a set of wireless communication nodes that are configured to operate as part of a wireless mesh network, wherein each respective wireless communication node in the set of wireless communication nodes is directly coupled to at least one other wireless communication node in the set of wireless communication nodes via a respective short-hop wireless link, and wherein at least a first pair of wireless nodes in the set of wireless communication nodes are both (a) indirectly coupled to one another via a first communication path that comprises one or more intermediary wireless communication nodes and two or more short-hop wireless links and (b) directly coupled to one another via a first long-hop wireless link that provides a second communication path between the first pair of wireless communication nodes having a lesser number of hops than the first communication path; anda fiber access point that is directly coupled to a first wireless communication node of the set of wireless communication nodes.2. The communication system of claim 1 , wherein ...

Das integrated digital off-air repeater

Embodiments may allow remote base transceiver stations (BTSs) physically located away from a local source of users to be able to provide local service as if the remote BTSs were at or near the local source of users. Some embodiments may include a plurality of BTSs, each having one or more sectors, and one or more digital access units (DAUs). Embodiments may also include a plurality of repeater digital units (RDUs), where each RDU may be configured to communicate to at least one of the plurality of BTSs and may be operable to route signals optically to the one or more DAUs. Embodiments may also include a plurality of digital remote units (DRUs) located at a location remote to the one or more DAUs, wherein the plurality of remote DRUs may be operable to transport signals to the one or more DAUs.

Distributed antenna system and method

A system for the distribution of radio-frequency signals includes a main unit associated with a first radio communication set, a remote unit associated with a second radio communication set installed in a preset area, for radio coverage of the area, and a communication channel associated with the main and remote units, wherein the main unit and remote units have analogue modulation elements of signals to be sent on the communication channel. The remote unit includes a selective amplification unit associated with the second radio communication set and having analogue/digital conversion elements of signals coming from the main unit, through the communication channel, and/or of signals coming from the second radio communication set, digital filtering elements of digital signals coming out of the analogue/digital conversion elements and amplification elements of signals coming from the main unit, through the communication channel, and/or of signals coming from the second radio communication set.

SUPPORTING ANALOG REMOTE ANTENNA UNITS (RAUS) IN DIGITAL DISTRIBUTED ANTENNA SYSTEMS (DASS) USING ANALOG RAU DIGITAL ADAPTORS

Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors. In the digital DAS disclosed herein, a head-end equipment (HEE) is configured to exchange digital communications signals with a plurality of digital RAUs. The digital DAS is also configured to distribute digital communications signals to an analog RAU(s), which is not inherently capable of processing the digital communications signals. In this regard, an analog RAU digital adaptor(s) is provided in an analog remote unit to serve as a digital interface for the analog RAU(s). The analog RAU digital adaptor(s) is configured to provide conversions between the digital communications signals and analog RF communications signals. By providing the analog RAU digital adaptor as the digital interface for the analog RAU(s), the digital DAS can be configured to compatibly communicate with the analog RAU(s) and the digital RAU(s). 1. An adaptive analog remote unit for a digital distributed antenna system (DAS) , comprising: receive at least one uplink analog radio frequency (RF) communications signal from at least one client device; and', 'convert the at least one uplink analog RF communications signal into at least one uplink analog optical communications signal;, 'at least one analog remote antenna unit (RAU) configured toat least one analog RAU digital adaptor coupled to the at least one analog RAU over at least one uplink optical fiber;wherein the at least one analog RAU is configured to provide the at least one uplink analog optical communications signal to the at least one analog RAU digital adaptor; and receive the at least one uplink analog optical communications signal from the at least one analog RAU over the at least one uplink optical fiber; and', 'convert the at least one uplink analog optical communications signal into at least one uplink digital communications signal; and', 'distribute the at least one uplink digital communications signal ...

CENTRAL OFFICE DEVICE, REMOTE SITE DEVICE, AND COMMUNICATION METHOD THOSEOF

The present invention relates to a central office device, a remote site device, and a communication method thereof that can be used in a radio over fiber (RoF) technique. Provided are a central office device and a communication method thereof that convert an analog signal into a signal having a carrier with an intermediate frequency and converts the converted signal into a digital signal to transmit the converted digital signal to a remote site device. Provided are a remote site device and a communication method thereof that filter a digital signal having a carrier with an intermediate frequency to easily induce a corresponding analog signal. 1. A central office device comprising:a signal conversion module converting an input signal into an analog signal having a carrier with an intermediate frequency (IF);a modulation module generating a digital signal corresponding to the analog signal by applying pulse density modulation to the analog signal; anda transmission module transmitting the digital signal to a remote site device through a channel.2. The device of claim 1 , wherein the modulation module applies band-pass delta sigma modulation (BPDSM) to the analog signal to generate the digital signal.3. The device of claim 1 , wherein the modulation module applies low-pass delta sigma modulation (LPDSM) to the analog signal to generate the digital signal.4. The device of claim 1 , wherein the intermediate frequency is higher than a baseband frequency and lower than a carrier frequency of a signal transmitted from the remote site device.5. The device of claim 1 , wherein the input signal is a signal having the baseband frequency.6. The device of claim 1 , wherein the signal conversion module converts a first input signal and a second input signal into analog signals having a carrier with a first intermediate frequency and a carrier with a second intermediate frequency claim 1 , respectively and synthesizes the analog signals claim 1 , andthe modulation module applies ...

TRANSMISSION DEVICE WITH PULSE WIDTH MODULATION AND TRANSMISSION SYSTEM

A transmission device outputs a modulated signal based on amplitude information and phase information respectively indicating an amplitude and a phase of a transmission symbol. The transmission device includes: an oscillation signal generation circuit configured to generate an oscillation signal based on the phase information; a laser light source configured to be driven by the oscillation signal; a bias controller configured to control a bias current of the laser light source based on the amplitude information; a photo detector configured to convert an output light of the laser light source into an electric signal; and a bandpass filter configured to filter an output signal of the photo detector so as to output the modulated signal. 1. A transmission device that outputs a modulated signal based on amplitude information and phase information respectively indicating an amplitude and a phase of a transmission symbol , the transmission device comprising:an oscillation signal generation circuit configured to generate an oscillation signal based on the phase information;a laser light source configured to be driven by the oscillation signal;a bias controller configured to control a bias current of the laser light source based on the amplitude information;a photo detector configured to convert an output light of the laser light source into an electric signal; anda bandpass filter configured to filter an output signal of the photo detector so as to output the modulated signal.2. The transmission device according to claim 1 , further comprisingan amplifier that is implemented between the photo detector and the bandpass filter, and is configured to amplify the output signal of the photo detector.3. The transmission device according to claim 1 , whereinthe bias controller includes an amplitude corrector configured to correct the amplitude information such that an amplitude of an output signal of the bandpass filter is linear with respect to an amplitude indicated by the ...

HIGH-DIRECTIVITY DIRECTIONAL COUPLER, AND RELATED METHODS AND SYSTEMS

Embodiments of the disclosure relate to a high-directivity directional coupler, and related methods and systems. The high-directivity directional coupler includes a first microstrip and a second microstrip disposed parallel to the first microstrip. The high-directivity directional coupler inherently generates an even mode current and an odd mode current in the second microstrip. The second microstrip provides a linear forward path for conveying the even mode current and a non-linear return path for conveying the odd mode current. The non-linear return path is longer than the linear forward path to compensate for phase velocity difference between the even mode current and the odd mode current. As a result, the odd mode current and the even mode current in the second microstrip can destructively cancel out each other, thus rendering high-directivity without compromising other performance aspects of the high-directivity directional coupler. 1. A wireless distribution system (WDS) , comprising: receive and convert a plurality of downlink digital communications signals into a plurality of downlink radio frequency (RF) communications signals for distribution to client devices; and', 'receive a plurality of uplink RF communications signals from the client devices and convert the plurality of uplink RF communications signals into a plurality of uplink digital communications signals; and, 'a plurality of remote units configured to distribute the plurality of downlink digital communications signals to the plurality of remote units; and', 'receive the plurality of uplink digital communications signals from the plurality of remote units;, 'a central unit configured to a substrate;', 'a ground plane;', 'an input port configured to receive an input signal;', 'an output port configured to output the received input signal as an output signal;', 'a coupled port configured to output a coupled signal proportional to the input signal;', 'an isolated port configured to provide isolation ...

Control and Management of a First PON Using a Second PON

A system comprising a first optical line terminal (OLT) of a first passive optical network (PON) with the first OLT configured to receive user data from a baseband unit (BBU) and send the user data to a remote radio unit (RRU) via a first optical network unit (ONU) of the first PON using a first wavelength, and a second OLT of a second PON, the second OLT configured to obtain control and management (C&M) information, share the C&M information with the first OLT, and send the C&M information to a second ONU that is co-located with the first ONU using a second wavelength. 1. A system comprising: receive user data from a baseband unit (BBU); and', 'send the user data to a remote radio unit (RRU) via a first optical network unit (ONU) of the first PON using a first wavelength; and, 'a first optical line terminal (OLT) of a first passive optical network (PON), the first OLT configured to obtain control and management (C&M) information;', 'share the C&M information with the first OLT; and', 'send the C&M information to a second ONU that is co-located with the first ONU using a second wavelength., 'a second OLT of a second PON, the second OLT configured to2. The system of claim 1 , wherein the second OLT is configured to send the C&M information to the second ONU independently of the first OLT sending the user data to the first ONU.3. The system of claim 1 , wherein the second OLT is configured to perform MAC processing before sending the C&M information to the second ONU.4. The system of claim 1 , wherein the second ONU is configured to share the C&M information with the co-located first ONU.5. The system of claim 1 , wherein the C&M information comprises at least one of: ranging information claim 1 , time of day (ToD) information claim 1 , registration information claim 1 , or dynamic bandwidth allocation (DBA) information.6. The system of claim 1 , further comprising an OLT memory coupled to the first OLT and the second OLT claim 1 , wherein the C&M information is ...

MANAGING A COMMUNICATIONS SYSTEM BASED ON SOFTWARE DEFINED NETWORKING (SDN) ARCHITECTURE

Embodiments of the disclosure relate to managing a communications system based on software defined networking (SDN) architecture. An SDN controller is provided in the communications system to manage a wireless distribution system (WDS) and a local area network (LAN) based on SDN architecture. The SDN controller is communicatively coupled to a WDS control system in the WDS and a LAN control system in the LAN via respective SDN control data plane interfaces (CDPIs). The SDN controller analyzes a WDS performance report and a LAN performance report and provides a WDS configuration instruction(s) and/or a LAN configuration instruction(s) to the WDS control system and/or the LAN control system to reconfigure a WDS element(s) and/or a LAN element(s) to improve quality-of-experiences (QoEs) of the communications system. Monitoring and optimizing the WDS and the LAN based on a unified software-based network management platform can improve performance at reduced operational costs and complexity. 1. A method for managing a communications system based on software defined networking (SDN) architecture , comprising:generating a wireless distribution system (WDS) performance report from a WDS control system communicatively coupled to a WDS comprising a plurality of optical fiber-fiber-based communications media;generating a local area network (LAN) performance report from a LAN control system communicatively coupled to a LAN;communicatively coupling an SDN controller to the WDS control system and the LAN control system via a first SDN control data plane interface (CDPI) and a second SDN CDPI to receive the WDS performance report and the LAN performance report, respectively;analyzing the WDS performance report and the LAN performance report by the SDN controller to determine whether quality-of-experiences (QoEs) of the communications system meet predefined performance targets;providing a WDS configuration instruction from the SDN controller to the WDS control system in response to ...

REDUCING LOCATION-DEPENDENT DESTRUCTIVE INTERFERENCE IN DISTRIBUTED ANTENNA SYSTEMS (DASS) OPERATING IN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) CONFIGURATION, AND RELATED COMPONENTS, SYSTEMS, AND METHODS

Components, systems, and methods for reducing location-dependent destructive interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of separation (i.e., phase, amplitude) in the received MIMO communications signals. Thus, to provide amplitude separation of received MIMO communications signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is amplitude adjusted in one of the polarization states to provide amplitude separation between received MIMO communications signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide amplitude separation. 1. A distributed communication system , comprising:a central unit;a plurality of optical fibers; and a first MIMO transmitter comprising a first MIMO transmitter antenna configured to transmit MIMO communications signals in a first polarization and a second MIMO transmitter antenna configured to transmit MIMO communications signals in a second polarization different from the first polarization; and', 'a second MIMO transmitter comprising a third MIMO transmitter antenna configured to transmit MIMO communications signals in the first polarization and a fourth MIMO transmitter antenna configured to transmit MIMO communications signals in the second polarization, wherein, 'a plurality of multiple-input, multiple-output (MIMO) remote units coupled to the central unit by the plurality of optical fibers, at least one of the MIMO remote units being configured to wirelessly distribute MIMO ...

COMMUNICATION DEVICE THAT TRANSMITS SIGNALS VIA A PLURALITY OF ANTENNAS AND COMMUNICATION SYSTEM

A communication device includes: a converter circuit configured to convert an optical signal that carries an oscillator signal of a radio frequency and transmission signals generated in a signal processing device into an electric signal; an extractor configured to extract the oscillator signal from the electric signal; a recovery circuit configured to recover the transmission signals from the electric signal; a radio frequency signal generator configured to generate radio frequency signals that respectively carry the transmission signals recovered by the recovery circuit using the oscillator signal; amplifiers respectively configured to amplify the radio frequency signals; antennas respectively configured to output the amplified radio frequency signals; a feedback circuit configured to generate a feedback signal from the amplified radio frequency signals; and a transmitter configured to convert the feedback signal into an optical signal and transmit it to the signal processing device. 1. A communication device comprising:a converter circuit configured to convert an optical signal that carries an oscillator signal of a radio frequency and a plurality of transmission signals generated in a signal processing device into an electric signal;an extractor configured to extract the oscillator signal from the electric signal;a recovery circuit configured to recover the plurality of transmission signals from the electric signal;a radio frequency signal generator configured to generate a plurality of radio frequency signals that respectively carry the plurality of transmission signals recovered by the recovery circuit using the oscillator signal extracted by the extractor;a plurality of amplifiers respectively configured to amplify the plurality of radio frequency signals;a plurality of antennas respectively configured to output the plurality of radio frequency signals amplified by the plurality of amplifiers;a feedback circuit configured to generate a feedback signal from the ...

NETWORK NODE AND A METHOD THEREIN ENABLING A FIRST UNIT TO CONNECT OR TO BE CONNECTED AD-HOC TO A SECOND UNIT

Embodiments herein relate to a method in a network node configured in an optical network for enabling a first unit to connect ad-hoc to a second unit in a system configured for remote radio units and main units. The network node receives a connection request from the first unit over the optical network. The network node establishes a connection, to the first unit, for control data. The network node stores control data regarding the first unit. The control data is retrieved from the first unit over the established connection and wherein the control data enables the first unit to connect/be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network. 1. A method in a network node configured in an optical network for enabling a first unit to connect or to be connected ad-hoc to a second unit , the method comprising:receiving a connection request from the first unit over the optical network, wherein the first unit includes a main unit of a radio base station;establishing a connection, to the first unit, for retrieving control data; andstoring the control data regarding the first unit retrieved from the first unit over the established connection, and wherein the control data enables the first unit to connect or to be connected ad-hoc to the second unit for transferring user data over a physical path through the optical network, wherein the second unit includes a remote radio unit (RRU) of the radio base station.2. The method according to claim 1 , further comprising:connecting ad-hoc the first unit to the second unit according to a determined physical path through the optical network, wherein the determined physical path is based on the stored control data.3. The method according to claim 2 , wherein the connecting is performed keeping the network node in the determined physical path.4. The method according to claim 2 , further comprisingdisconnecting the established connection for control data.5. The method according ...

Passive backplane architecture for master unit of distributed antenna system

One embodiment is directed to a master unit for a distributed antenna system (DAS). The master unit comprises one or more donor cards and one or more transport cards, and at least one passive backplane. Each passive backplane comprises a plurality of backplane connectors. Each backplane connector is configured to connect a respective donor card or transport card to the passive backplane. Each backplane connector is connected to each of the other connectors via one or more respective passive bi-directional backplane channels. The master unit is configured so that all active processing of streams of digital samples transported via the DAS is performed by the donor cards and transport cards and not the passive backplane.

WIRELESS ACCESS SYSTEM

A wireless access system includes a baseband processing unit pool, an optical network unit and a remote radio head. The BBU pool may be connected to one or more ONUs, each of the ONUs may be connected to one or more RRHs, and the connection between each of the ONUs and the one or more RRHs may be implemented using a twisted pair. Embodiments can provide access, convergence and transport with a very large capacity from indoor antenna units to a centralized BBU as well as an easy installation, and thus they are cost economical for a large scale deployment of indoor wireless access. Furthermore, advanced wireless technologies, such as large scale MIMO and CoMP, can be supported. 1. A wireless access system , comprising a baseband processing unit (BBU) pool , an optical network unit (ONU) , and a remote radio head (RRH) , the BBU pool being connected to one or more ONUs , each of the ONUs being connected to one or more RRHs , a connection between each of the ONUs and the one or more RRHs being implemented using a twisted pair.2. The wireless access system according to claim 1 , wherein the connection between each of the ONUs and the one or more RRHs is implemented using a RJ-45 port.3. The wireless access system according to claim 1 , wherein the connection between the BBU pool and the one or more ONUs is implemented using optical fiber and passive optical network (PON) architecture.4. The wireless access system according to claim 1 , wherein the RRH enables coordinated transmission of one or more antennas.5. The wireless access system according to claim 4 , wherein the coordinated transmission includes multiple-input multiple-output (MIMO) transmission.6. The wireless access system according to claim 4 , wherein the coordinated transmission includes coordinated multiple-point (CoMP) transmission.7. The wireless access system according to claim 1 , wherein the BBU pool compensates for crosstalk in transmission via the twisted pair.8. The wireless access system according ...

Re-Modulation Crosstalk and Intensity Noise Cancellation in Wavelength-Division Multiplexing (WDM) Passive Optical Networks (PONs)

An apparatus comprising a signal generator configured to produce a modulation signal, a filter coupled to the signal generator and configured to filter the modulation signal to produce a cancellation signal, and a reflective semiconductor optical amplifier (RSOA) coupled to the signal generator and the filter, wherein the RSOA is configured to generate an optical signal according to a difference between the modulation signal and the cancellation signal and transmit the optical signal towards a partial reflection mirror (PRM). 1. An apparatus comprising:a signal generator configured to produce a modulation signal;a filter coupled to the signal generator and configured to filter the modulation signal to produce a cancellation signal; and generate an optical signal according to a difference between the modulation signal and the cancellation signal; and', 'transmit the optical signal towards a partial reflection mirror (PRM)., 'a reflective semiconductor optical amplifier (RSOA) coupled to the signal generator and the filter, wherein the RSOA is configured to2. The apparatus of claim 1 , wherein the RSOA is further configured to receive a reflected signal comprising a portion of the transmitted optical signal reflected from the PRM claim 1 , and wherein the cancellation signal is an estimate of a previous reflected signal.3. The apparatus of claim 1 , wherein the filter comprises a filter response comprising:an optical-to-optical response of the RSOA;a scaling component associated with a power reflection coefficient of the PRM; anda delay component associated with a round-trip delay between the RSOA and the PRM.4. The apparatus of claim 1 , wherein the filter comprises:an attenuator coupled to the differentiator and configured to attenuate the modulation signal;a delay unit coupled to the attenuator and the differentiation unit, wherein the delay unit is configured to delay the modulation signal by a time duration equal to a round-trip delay between the RSOA and the PRM ...

MONITORING NON-SUPPORTED WIRELESS SPECTRUM WITHIN COVERAGE AREAS OF DISTRIBUTED ANTENNA SYSTEMS (DASS)

Monitoring non-supported wireless spectrum within a coverage area of a distributed antenna system (DAS) in which a listening module connected to a remote unit of the DAS monitors non-supported wireless frequencies (i.e., frequencies that are outside the frequency ranges supported by the downlink and uplink signals of the DAS), via one or more antennas. The listening module also transmits the wireless frequencies to a monitoring module connected to head-end equipment (HEE) of the DAS. In that manner, a monitoring module can use an existing DAS infrastructure to monitor non-supported portions of the wireless spectrum at remote locations. In addition to avoiding the need to run a parallel DAS infrastructure, the disclosed arrangements are also useful in shared spectrum environments and other environments where efficient spectrum utilization is desired. 1. An apparatus connected to at least one remote unit of a wireless system for monitoring non-supported wireless spectrum within a coverage area of the wireless system comprising:at least one antenna configured to receive one or more electromagnetic signals; at least one input configured to receive the electromagnetic signals from the at least one antenna;', 'at least one output configured to transmit the electromagnetic signals over at least one optical uplink path of the wireless system to head-end equipment of the wireless system; and', pass a non-supported radio band different than a supported radio band of the wireless system to the at least one output, and', 'prevent at least one radio band that includes the supported radio band of the wireless system from being passed to the at least one output., 'at least one listening path disposed between the at least one input and the at least one output and configured to], 'a listening module connected to the at least one antenna comprising2. The apparatus of claim 1 , wherein the at least one antenna is at least one broadband antenna connected to at least one remote unit of ...

Data Transmission Method, Apparatus, and System

The present invention discloses a data transmission method. The method includes: receiving, by a data processing apparatus, at least two data flows transmitted from at least two remote base stations among multiple remote base stations, aggregating the at least two data flows into one flow of output data, and transmitting the output data to a central site device; or receiving, by the data processing apparatus, one flow of synthetic input data transmitted from the central site device, restoring the synthetic input data to at least two data flows before synthesis, and transmitting the restored at least two data flows to corresponding remote base stations. 1. A data transmission method , wherein a data processing apparatus is connected to multiple remote base stations and one central site device , wherein the data processing apparatus is connected to each remote base station through one optical fiber or one pair of optical fibers , and the data processing apparatus is connected to the central site device through one optical fiber or one pair of optical fibers , the method comprising:receiving, by the data processing apparatus, a plurality data flows transmitted from at least two remote base stations among the multiple remote base stations, aggregating the at least two data flows into one flow of output data, and transmitting the output data to the central site device; orreceiving, by the data processing apparatus, one flow of synthetic input data transmitted from the central site device, restoring the synthetic input data to at least two data flows before synthesis, and transmitting, according to a sub-interface identity in each restored data flow and through sub-interfaces corresponding to the sub-interface identities, the restored at least two data flows to remote base stations that are connected to the sub-interfaces through optical fibers.2. The method according to claim 1 , wherein aggregating the data flows into one flow of output data comprises:acquiring a rate ...

SYSTEM AND METHOD FOR PLUG AND PLAY FIBER DISTRIBUTION PANELS

The techniques described herein may be used to deploy a digital kiosk, within a fiber optic network, in a manner that is efficient and that minimizes the risk of damaging the kiosk during the installation process. This may include manufacturing the kiosk with a Fiber Distributed Panel (FDP) that functions as an interface between a fiber optic stub (that connects the kiosk to a fiber optic network backbone) and individual, internal components of the kiosk. A technician therefore may install the kiosk without having to physically open the kiosk and/or configure the fiber cabling and internal components inside the kiosk. 1. A digital kiosk , comprising:a small cell radio configured to provide cellular network connectivity to User Equipment (UE) devices of a wireless telecommunication network;a Wi-Fi access point configured to provide Wi-Fi connectivity to the UE devices; receive a fiber optic stub that includes a plurality of optical fibers,', 'arrange a first portion of the plurality of optical fibers as a plurality of pass-through fibers,', 'convert a second portion of the plurality of optical fibers into a plurality of splitter fibers,', 'connect, via the plurality of pass-through fibers, to a router that is connected to the Wi-Fi access point of the digital kiosk, and', 'connect, via the plurality of splitter fibers, to the small cell radio., 'a fiber distribution panel (FDP) configured to2. The digital kiosk of claim 1 , wherein the plurality of pass-through fibers include Local Connector Ultra Physical Contact (LC-UPC) connectors.3. The digital kiosk of claim 1 , wherein the plurality of splitter fibers include Standard Connector Angled Physical Contact (SC-APC) connectors.4. The digital kiosk of claim 1 , wherein the FDP is further configured to:arrange another portion of optical fibers, of the plurality of optical fibers, as dead fibers.5. The digital kiosk of claim 1 , wherein the FDP is further configured to:arrange other optical fibers, of the plurality of ...

GUIDED-WAVE TRANSMISSION DEVICE WITH NON-FUNDAMENTAL MODE PROPAGATION AND METHODS FOR USE THEREWITH

Aspects of the subject disclosure may include, for example, a transmission device that includes a transmitter that generates a first electromagnetic wave to convey data. A coupler couples the first electromagnetic wave to a single wire transmission medium having an outer surface, to forming a second electromagnetic wave that is guided to propagate along the outer surface of the single wire transmission medium via at least one guided wave mode that includes an asymmetric or non-fundamental mode having a lower cutoff frequency. A carrier frequency of the second electromagnetic wave is selected to be within a limited range of the lower cutoff frequency, so that a majority of the electric field is concentrated within a distance from the outer surface that is less than half the largest cross sectional dimension of the single wire transmission medium, and/or to reduce propagation loss. Other embodiments are disclosed. 1. A transmission device comprising:a communications interface that receives a first communication signal that includes first data;a transceiver, coupled to the communications interface, that generates a first electromagnetic wave based on the first communication signal to convey the first data; anda coupler, coupled to the transceiver, that couples the first electromagnetic wave to a transmission medium having at least one inner portion surrounded by a dielectric material, the dielectric material having an outer surface and a corresponding circumference, wherein the coupling of the first electromagnetic wave to the transmission medium forms a second electromagnetic wave having at least one carrier frequency that is guided to propagate along the outer surface of the dielectric material via at least one guided wave mode that includes a non-fundamental mode, wherein the non-fundamental mode has a lower cutoff frequency, and wherein the at least one carrier frequency is selected based on the lower cutoff frequency.2. The transmission device of claim 1 , further ...

Terminal Enclosure Wireless Base Station

Novel tools and techniques for provisioning a wireless base station functionality at a terminal enclosure are provided. A system includes a first network device, first transceiver, first antenna, second network device, second transceiver, and a second antenna. The first network device may be communicatively coupled to a first network via a first medium and a second medium. The first network device may include a first transceiver coupled to the first network via the first medium, and a first antenna coupled to the first transceiver. The second network device may be coupled to a second network, and include a second transceiver coupled to a second antenna. The first and second network devices may be configured to communicate wirelessly, wherein data communicated from the second network device to the first network device is transmitted to the first network via the first medium. 1. A system comprising: a first transceiver coupled to the first medium;', 'a first antenna operatively coupled to the first transceiver;, 'a first network device communicatively coupled to a first network via a first medium and a second medium, the first network device comprising a second transceiver in communication with the second network;', 'a second antenna operatively coupled to the second transceiver;, 'a second network device communicatively coupled to a second network, the second network device comprisingwherein the second network device is configured to transmit data from the second network to the first transceiver, and receive data from the first network via the second transceiver; transmit data received from the second network, via the first transceiver, to the first network, via the first medium, and', 'transmit data received from the first network, via the first medium, to the second network, via the first transceiver; and, 'wherein the first network device is configured towherein the first network device is communicatively coupled to at least one other network device via a wired ...

MULTIPLE APPLICATION DEVICES FOR PROVIDING SERVICES IN WIRELESS DISTRIBUTION SYSTEMS (WDS), INCLUDING DISTRIBUTED ANTENNA SYSTEMS (DAS), AND RELATED SYSTEMS AND METHODS

Multiple application devices (such as multiple application modules (MAMs) and multiple application units (MAUs)) for providing services in wireless distribution systems (WDSs) are disclosed. The multiple application devices are wireless telecommunication circuitry associated with wireless distribution components in a WDS. By associating multiple application devices into components of a WDS, network services, and applications within the WDS can be provided. The WDS may comprise a central unit, a plurality of remote units, and a plurality of multiple application devices associated with at least one of the central unit and at least one of the remote units. Each of the plurality of multiple application devices comprises at least one multiple applications processor, is connected to at least one other of the plurality of multiple application devices, and is configured to coordinate with one other multiple application device of the plurality of multiple application devices to provide a user requested service. 1. A wireless distribution system (WDS) , comprising:a central unit;a plurality of remote units;a plurality of multiple application devices associated with at least one of the central unit and at least one of the remote units among the plurality of remote units, wherein each of the plurality of multiple application devices comprises at least one multiple applications processor, is connected to at least one other multiple application device of the plurality of multiple application devices, and is configured to coordinate with at least one other multiple application device of the plurality of multiple application devices to provide a service requested by a user.2. The WDS of claim 1 , wherein at least one of the multiple application devices is a multiple application module (MAM) associated with at least one of the central unit and the at least one of the remote units among the plurality of remote units.3. The WDS of claim 2 , wherein the MAM is disposed in the central ...

COMMUNICATION SYSTEM FOR ANALOG AND DIGITAL COMMUNICATION SERVICES

A first and a second interconnection unit comprising a respective first and a second communication interface, a first and a second electro-optical converter, and a multiplexing unit, is disclosed. The first interconnection unit is adapted to receive electrically transmitted analog and digital information, convert said information into electrically transmitted information, and to multiplex the information so as to enable transmission over a bidirectional link. The second interconnection unit is adapted to receive and de-multiplex the transmitted analog and digital information, to convert it back into electrically transmitted analog and digital information, and to output said information. A system comprising the first and second interconnection units is also disclosed. The system is adapted for supplying both analog services and digital services with communication information over the bidirectional link. 1100110120130. A first interconnection unit () comprising a first and a second communication interface , a first and a second electro-optical converter ( , ) , and a multiplexing unit () , the first interconnection unit being adapted to:{'b': '1', 'sub': 'E', 'receive, at the first communication interface, a first stream of electrically transmitted analog information (A);'}{'b': 110', '1', '1, 'sub': E', 'O, 'convert, at the first electro-optical converter (), said first stream of electrically transmitted analog information (A) into a first stream of optically transmitted analog information (A);'}{'b': '1', 'sub': 'E', 'receive, at the second communication interface, a first stream of electrically transmitted digital information (D);'}{'b': 120', '1', '1, 'sub': E', 'O, 'convert, at the second electro-optical converter (), said first stream of electrically transmitted digital (D) information into a first stream of optically transmitted digital information (D);'}{'b': 130', '1', '1, 'sub': O', 'O, 'multiplex, at the multiplexing unit (), said first stream of optically ...

MULTI-RANGE COMMUNICATION SYSTEM

A multi-range communication system is provided that can be expanded to support communications using both RF signals and millimeter wave signals without having to install entirely new systems to support communication of the signals. The communication system can use one or more shared optical fibers to simultaneously communicate both RF signals and millimeter wave signals in different ranges between network devices and mobile devices. The communication system permits the co-location of components for the communication system for the different ranges, which can result in substantially similar coverage areas for each of the ranges supported by the communication system. In addition, the corresponding equipment used for communicating signals in each of the ranges can be powered from a common DC power source. The supplied power can be configured for each piece of equipment, and corresponding range, such that the substantially similar coverage areas are obtained. 1. A distributed antenna system (DAS) for a communication system , comprising:a primary connection area comprising first equipment configured to communicate first signals in a first communication frequency range with a first network communications device and to communicate second signals in a second communication frequency range with a second network communications device, wherein the first communication frequency range is distinct from the second communication frequency range;a first optical fiber connected to the first equipment, the first optical fiber having at least one first strand for communication of first signals in the first communication frequency range and at least one second strand for communication of second signals in the second communication frequency range;a secondary connection area comprising second equipment connected to the first optical fiber;a second optical fiber connected to the second equipment, the second optical fiber having at least one first strand for communication of first signals in ...

SAFETY POWER DISCONNECTION FOR POWER DISTRIBUTION OVER POWER CONDUCTORS TO POWER CONSUMING DEVICES

Safety power disconnection for remote power distribution in power distribution systems is disclosed. The power distribution system includes one or more power distribution circuits each configured to remotely distribute power from a power source over current carrying power conductors to remote units to provide power for remote unit operations. A remote unit is configured to decouple power from the power conductors thereby disconnecting the load of the remote unit from the power distribution system. A current measurement circuit in the power distribution system measures current flowing on the power conductors and provides a current measurement to the controller circuit. The controller circuit is configured to disconnect the power source from the power conductors for safety reasons in response to detecting a current from the power source in excess of a threshold current level indicating a load. 1. A distributed communications system (DCS) , comprising: distribute received one or more downlink communications signals over one or more downlink communications links to one or more remote units;', 'distribute received one or more uplink communications signals from the one or more remote units from one or more uplink communications links to one or more source communications outputs;, 'a central unit configured to a remote power input coupled to a power conductor carrying current from a power distribution circuit;', 'a remote switch control circuit configured to generate a remote power connection signal indicating a remote power connection mode; and', the remote switch circuit configured to be closed to couple to the remote power input in response to the remote power connection mode indicating a remote power connect state; and', 'the remote switch circuit further configured to be opened to decouple from the remote power input in response to the remote power connection mode indicating a remote power disconnect state;, 'a remote switch circuit comprising a remote switch input ...

SYSTEMS AND METHODS FOR A PASSIVE-ACTIVE DISTRIBUTED ANTENNA ARCHITECTURE

Systems and methods for a passive-active distributed antenna architecture are provided. In one example embodiment, a distributed antenna architecture comprises: a passive wireless coverage system in communication with a base station; an active wireless coverage system in communication with the base station; a conductor network comprising a plurality of cables coupled to at least one splitter-combiner device; and a DC power injector circuit coupled to the conductor network; wherein the DC power injector circuit injects a DC power signal onto the conductor network; wherein the passive wireless coverage system communicates analog radio frequency (RF) signals with the base station over the conductor network. 1. A distributed antenna architecture , the architecture comprising:a passive wireless coverage system in communication with a base station;an active wireless coverage system in communication with the base station;a conductor network comprising a plurality of cables coupled to at least one splitter-combiner device; anda DC power injector circuit coupled to the conductor network;wherein the DC power injector circuit injects a DC power signal onto the conductor network;wherein the passive wireless coverage system communicates analog radio frequency (RF) signals with the base station over the conductor network.2. The architecture of claim 1 , further comprising an asymmetrical splitter;wherein the passive wireless coverage system is coupled to the base station by a first port of the asymmetrical splitter; andwherein the active wireless coverage system is coupled to the base station by a second port of the asymmetrical splitter.3. The architecture of claim 1 , wherein the base station comprises a baseband unit (BBU) coupled to a remote radio units (RRU).4. The architecture of claim 1 , wherein the conductor network comprises a plurality of cables coupled to at least one splitter-combiner device.5. The architecture of claim 4 , wherein the plurality of cables comprise ...

BASE STATION APPARATUS, GROUND STATION DEVICE, AND GROUND ANTENNA DEVICE

A base station apparatus includes a ground station device and a plurality of ground antenna devices coupled to the ground station device via an optical transmission path. The ground station device performs electrical-optical conversion on an analog electrical signal to be transmitted to a mobile station and a reference clock signal to generate optical signals, performs wavelength division multiplexing on the obtained optical signals to generate a multiplexed optical signal, and outputs the multiplexed optical signal to the optical transmission path. Each of the plurality of ground antenna devices demultiplexes the multiplexed optical signal input from the optical transmission path into demultiplexed optical signals, performs optical-electrical conversion on the demultiplexed optical signals to generate electrical signals, up-converts a frequency of the analog electrical signal obtained through the optical-electrical conversion based on the reference clock signal obtained through the optical-electrical conversion to generate an up-converted signal, and transmits the up-converted signal to the mobile station. 15-. (canceled)6. A base station apparatus comprising:a ground station device; anda plurality of ground antenna devices coupled to the ground station device via an optical transmission path, whereinthe ground station device performs electrical-optical conversion on an analog electrical signal to be transmitted to a mobile station and a reference clock signal to generate optical signals, performs wavelength division multiplexing on the obtained optical signals to generate a multiplexed optical signal, and outputs the multiplexed optical signal to the optical transmission path, andeach of the plurality of ground antenna devices demultiplexes the multiplexed optical signal input from the optical transmission path into demultiplexed optical signals, performs optical-electrical conversion on the demultiplexed optical signals to generate electrical signals, up-converts ...

SYSTEM AND METHOD OF MONITORING BASE STATION SIGNAL

Provided is a base station signal monitoring system including: a plurality of optical transmission devices configured to transmit a base station signal; a measuring device configured to measure the base station signal according to a preset method; and a switch device, which is connected to the plurality of optical transmission devices and the measuring device, configured to switch connections between a plurality of input ports and a plurality of output ports so that the base station signal is transmitted from one of the plurality of optical transmission devices to the other one of the plurality of optical transmission devices or the measuring device. 1. A base station signal monitoring system comprising:a plurality of optical transmission devices configured to transmit a base station signal;a measuring device configured to measure the base station signal according to a preset method; anda switch device, which is connected to the plurality of optical transmission devices and the measuring device, configured to switch connections between a plurality of input ports and a plurality of output ports so that the base station signal is transmitted from one of the plurality of optical transmission devices to the other one of the plurality of optical transmission devices or the measuring device.2. The base station signal monitoring system of claim 1 , wherein the switch device receives a base station signal transmission request from the measuring device claim 1 , switches the connections between the plurality of input ports and the plurality of output ports to transmit at least a portion of a base station signal corresponding to the base station signal transmission request to the measuring device.3. The base station signal monitoring system of claim 1 , wherein the switch device receives a base station signal transmission request from the measuring device claim 1 , duplicates at least a portion of a base station signal corresponding to the base station signal transmission ...

Optical Receiver and Method of Receiving an Optical Communications Signal

An optical receiver () comprising: an input () arranged to receive a subcarrier multiplexing, SCM, optical signal () comprising an optical carrier and an optical subcarrier, each having a respective optical power; a carrier suppression element, CSE, () arranged to receive the SCM optical signal and having a rejection band that is tuneable in frequency to partially suppress the optical carrier by a variable amount; an optical amplifier () having a variable gain and arranged to receive the SCM optical signal from the CSE and amplify the optical carrier and the optical subcarrier; a photoreceiver () arranged to receive the SCM optical signal from the amplifier; and a controller () arranged to cause frequency tuning of the rejection band and variation of the gain of the optical amplifier to adjust a ratio of the optical power of the optical carrier at the photoreceiver to the optical power of the optical subcarrier at the photoreceiver based on an indication of performance of the SCM optical signal. 118-. (canceled)19. An optical receiver comprising:an input arranged to receive a subcarrier multiplexing (SCM) optical signal comprising an optical carrier and an optical subcarrier, each having a respective optical power;a carrier suppression element arranged to receive the SCM optical signal and having a rejection band that is tunable in frequency to partially suppress the optical carrier by a variable amount;an optical amplifier having a variable gain, the optical amplifier being arranged to receive the SCM optical signal output from the carrier suppression element and being arranged to amplify the optical carrier and the optical subcarrier;a photoreceiver arranged to receive the SCM optical signal output from the optical amplifier; anda controller arranged to cause frequency tuning of the rejection band and variation of the gain of the optical amplifier so as to adjust a ratio of the optical power of the optical carrier at the photoreceiver to the optical power of the ...

Wavefront Multiplexing in Passive Optical Network with Remote Digital Beam Forming

Four independent technologies are incorporated in this invention to efficiently and cost effectively implement dynamic last mile connectivity. The four technologies are passive optical networks (PON), Small cell, wavefront multiplexing (or K-muxing), and digital beam forming (DBF). We have filed US patents for communications architectures featuring K-muxing overlaid over low cost of PON. Those inventions relate particularly to resource allocation in passive optical networks (PON) via wavefront multiplexing (WF-muxing or K-muxing) and wavefront demultiplexing (WF-demuxing or K-demuxing). The “WF-muxing in PON” can be configured for performing remote digital beam forming (RDBF) over a service area covered by multiple small cells. The RDBF may generate multiple shaped beams with enhanced connectivity and better isolations over a same frequency slot concurrently to serve multiple users over the coverage area.

WIRELESS NETWORK CABLE ASSEMBLY

An optical fiber-based cable is formed to include pre-manufactured wireless access nodes included at spaced-apart locations along a length of the optical fiber cable. Each wireless access node is formed to include an antenna, a wireless radio transceiver, and an optical transceiver. The cable is formed to include a plurality of optical transmission fibers, as well as a plurality of separate electrical power conductors. An optical fiber is terminated at the optical transceiver within the wireless node, and a power conductor from the cable terminates at the node and is used to energize both the wireless transceiver and the optical transceiver. The antenna is preferably formed as a sheathing member around at least a portion of components forming the node. Upon deployment, the wireless node portion of the cable is able to provide communication between the cable and wireless devices in its vicinity. 1. An optical fiber communication cable comprising:a plurality of optical fibers disposed in an axial direction along a signal path, the plurality of optical fibers including a fronthaul communication fiber for supporting bidirectional optical communication;a plurality of electrical power conductors disposed in the axial direction along the signal path; and an antenna;', 'a wireless radio transceiver coupled to the antenna and powered by the terminated electrical power conductor, the wireless radio transceiver providing bidirectional communication with wireless devices within range of the antenna and converting communications between radio signals and electrical signals;', 'an optical transceiver coupled to the terminated optical fiber and the fronthaul optical fiber, the optical transceiver powered by the terminated electrical power conductor and connected to the wireless radio transceiver for providing bidirectional communication with the wireless radio transceiver and converting communications between electrical signals and optical signals, with converted optical signals ...

DIGITAL-ANALOG INTERFACE MODULES (DAIMS) FOR FLEXIBLY DISTRIBUTING DIGITAL AND/OR ANALOG COMMUNICATIONS SIGNALS IN WIDE-AREA ANALOG DISTRIBUTED ANTENNA SYSTEMS (DASS)

Embodiments of the disclosure relate to digital-analog interface modules (DAIMs) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (DASs). In this regard, in one aspect, a DAIM is a multi-functional device capable of distributing the digital and/or analog communications signals to a local-area DASs in a wide-area DAS. The DAIM comprises an analog radio frequency (RF) communications signal interface for coupling with an analog signal source, a digital communications interface for coupling with a digital signal source, an analog local distribution interface for coupling with a remote antenna unit (RAU), and at least one digital remote distribution interface for coupling with a head-end unit (HEU) of the local-area DAS. By employing the DAIM in the wide-area DAS, it is possible to flexibly reconfigure the wide-area DAS for distributing digital and/or analog communications signals over the digital communications mediums. 1. A digital-analog interface module (DAIM) in a main wireless communication system (WCS) to support a wide-area WCS , comprising:an analog communications interface configured to receive a downlink analog communications signal from at least one of an analog signal source and a baseband signal source;at least one digital remote distribution interface to be coupled with a remote WCS component in a remote WCS in the wide-area WCS;an analog local distribution interface configured to distribute a downlink analog radio frequency (RF) signal to a remote antenna unit (RAU) in the main WCS; receive the downlink analog communications signal from the analog signal source;', 'convert the downlink analog communications signal into the downlink analog RF signal adapted for distribution in the wide-area WCS;', 'provide the downlink analog RF signal to the analog local distribution interface; and', 'provide the downlink analog RF signal to an analog-to-digital (A/D) converter;, 'an RF conditioning ...

Communication systems and methods over direct current (dc) power conductors to remote subunits

Communication systems and methods over direct current (DC) power conductors to remote subunits may include interrupt windows in a power signal on a DC power conductor for safety reasons. The timing of rising and falling edges of the interrupt window may be modified, thereby changing the duration, period, or position within a period of the interrupt window. In effect, interrupt windows within the DC power signal may be pulse width modulated to send data between a power source and one or more subunits. Pulse width modulation (PWM) of the DC power signal preserves the safety features, but allows data and/or commands to be transferred between the power source and any subunits.

REDUCING LOCATION-DEPENDENT INTERFERENCE IN DISTRIBUTED ANTENNA SYSTEMS OPERATING IN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) CONFIGURATION, AND RELATED COMPONENTS, SYSTEMS, AND METHODS

Components, systems, and methods for reducing location-based interference in distributed antenna systems operating in multiple-input, multiple-output (MIMO) configuration are disclosed. Interference is defined as issues with received MIMO communications signals that can cause a MIMO algorithm to not be able to solve a channel matrix for MIMO communications signals received by MIMO receivers in client devices. These issues may be caused by lack of spatial (i.e., phase) separation in the received MIMO communications signals. Thus, to provide phase separation of received MIMO communication signals, multiple MIMO transmitters are each configured to employ multiple transmitter antennas, which are each configured to transmit in different polarization states. In certain embodiments, one of the MIMO communications signals is phase shifted in one of the polarization states to provide phase separation between received MIMO communication signals. In other embodiments, multiple transmitter antennas in a MIMO transmitter can be offset to provide phase separation. 1. A multiple-input multiple-output (MIMO) remote unit configured to wirelessly distribute MIMO communications signals to wireless client devices , comprising:a first MIMO transmitter comprising a first MIMO transmitter antenna configured to transmit MIMO communications signals in a first polarization and a second MIMO transmitter antenna configured to transmit MIMO communications signals in a second polarization different from the first polarization; anda second MIMO transmitter comprising a third MIMO transmitter antenna configured to transmit MIMO communications signals in the first polarization and a fourth MIMO transmitter antenna configured to transmit MIMO communications signals in the second polarization; receive a first optical downlink MIMO communications signal in a first phase over a first downlink communications medium, and transmit the first optical downlink MIMO communications signal wirelessly as a first ...

ELECTROMAGNETIC SIGNAL TRANSPORT AND DISTRIBUTION SYSTEM

An electromagnetic signal transport and distribution system and method provides for aggregating signals from multiple transport media and for distributing the signals to multiple end points in one or multiple formats to suit end user devices. 1. A signal transport and distribution system for users with satellite television and internet services:a signal combining section coupled with a signal distribution section via one bidirectional single-mode optical fiber;the signal combining section including a first multiplexer with coaxial cable and fiber inputs;the coaxial cable inputs for interconnection with the facilities of one or more multimedia signal providers via at least one direct broadcast satellite (“DBS”) antenna, each antenna having at least one low noise block downconverter;the fiber inputs for interconnection with facilities of an internet services provider via an optical line termination;the signal path between a low noise block downconverter and a respective first multiplexer port not exceeding a distance of 150 feet; and, a demultipelxer with plural coaxial outputs and a fiber output,', 'a second multiplexer for aggregating the coaxial outputs for transport on one aggregated signal coaxial cable, and', 'an optical network unit interconnecting the fiber output and an Ethernet connection;, 'the signal distribution section including'}wherein an end user receives bidirectional internet services via the Ethernet connection and satellite television services via the aggregated signal coaxial cable.2. A signal transport and distribution system for users with satellite television and internet services:an upstream signal transceiver and a plurality of signal transceivers downstream of the upstream signal transceiver;each of the signal transceivers having a transfer port and a plurality of signal ports;the upstream transceiver transfer port connected to a splitter via an optical fiber cable;each downstream transceiver connected to the splitter via an optical fiber ...