СПОСОБ ПЕРЕДАЧИ ДАННЫХ И УСТРОЙСТВО СВЯЗИ

Изобретение относится к способу передачи данных в базовой станции или пользовательском устройстве связи, обслуживаемом базовой станцией. Технический результат заключается в обеспечении повышения точности расширения зоны обслуживания. Способ содержит этапы, на которых: определяют индекс количества повторений передачи физического канала управления нисходящей передачи; определяют количество повторений или уровень повторений передачи физического совместно используемого канала нисходящей передачи, несущего широковещательную передачу или многоадресную передачу данных в соответствии с индексом количества повторений передачи физического канала управления нисходящей передачи. При этом этап определения индекса количества повторений передачи физического канала управления нисходящей передачи содержит подэтапы, на которых: получают физический канал управления нисходящей передачи и определяют индекс количества повторений в соответствии с физическим каналом управления нисходящей передачи или получают ...

СПОСОБ СВЯЗИ В СЕТИ MIMO

Изобретение относится к области беспроводной связи, использующей многопользовательскую систему с несколькими входами и несколькими выходами (MU-MIMO), и раскрывает способ связи в сети, которая включает в себя первичную станцию и, по меньшей мере, первую вторичную станцию, причем первая вторичная станция передает на первичную станцию индикатор первого множества векторов предварительного кодирования, а количество первых векторов предварительного кодирования больше предпочтительного ранга передачи с первичной станции на первую вторичную станцию. 4 н. и 13 з.п. ф-лы, 2 ил.

ПЕРЕДАЧА СЛУЖЕБНЫХ СИГНАЛОВ В ВОСХОДЯЩЕЙ ЛИНИИ СВЯЗИ ДЛЯ РЕЖИМА ПОДКЛЮЧЕНИЯ

Изобретение относится средствам передачи служебного сообщения восходящей линии связи в сети беспроводной связи. Технический результат заключается в обеспечении режима передачи для передачи служебного сообщения восходящей линии связи, который может быть адаптирован к текущей ситуации. Беспроводное устройство соединяется с первым сетевым элементом, по меньшей мере, по первой и второй линии беспроводной связи. Определяют режим передачи из числа альтернативных режимов передачи для передачи служебного сообщения восходящей линии связи. Альтернативные режимы передачи содержат: передачу по первой линии беспроводной связи; передачу по второй линии беспроводной связи и передачу по первой и второй линиям беспроводной связи. Передают служебное сообщение восходящей линии связи согласно определенному режиму передачи. 4 н. и 14 з.п. ф-лы, 28 ил.

СПОСОБ ОПРЕДЕЛЕНИЯ РЕСУРСОВ КАНАЛА УПРАВЛЕНИЯ ВОСХОДЯЩЕЙ ЛИНИИ СВЯЗИ, ОКОНЕЧНОЕ УСТРОЙСТВО И УСТРОЙСТВО СО СТОРОНЫ СЕТИ

Изобретение относится к области беспроводной связи. Технический результат изобретения заключается в эффективном предотвращении потери частотно-временных ресурсов. Оконечное устройство связи определяет количество N битов сигнальной информации управления восходящей линии связи, подлежащих передаче, оконечное устройство определяет количество первых ресурсов согласно целевой кодовой скорости и N, определяет количество фактически используемых ресурсов согласно количеству первых ресурсов и количеству предварительно сконфигурированных ресурсов, оконечное устройство передает сигнальную информацию управления восходящей линии связи посредством количества фактически используемых ресурсов. 3 н. и 11 з.п. ф-лы, 2 ил.

СПОСОБ И СИСТЕМА ДЛЯ СЕТЕЙ БЕСПРОВОДНОЙ СВЯЗИ, ИСПОЛЬЗУЮЩИХ РЕТРАНСЛЯЦИЮ

... 1. Способ осуществления связи в сети беспроводной связи с двумя ретрансляционными участками, в которой передатчик (210), приемник (220) и, по меньшей мере, одна ретрансляционная станция (215) участвуют в сеансе связи, и ретрансляционная станция (215) пересылает сигналы из первой линии связи между передатчиком (210) и ретрансляционной станцией (215) во вторую линию связи между ретрансляционными станциями (215) и приемником (220), отличающийся тем, что пересылку, осуществляемую, по меньшей мере, одной ретрансляционной станцией (215), адаптируют в соответствии с оцененными характеристиками радиоканала. 2. Способ по п.1, в котором в сеансе связи участвует совокупность ретрансляционных станций (215), и их соответствующую пересылку адаптируют на основании относительного параметра передачи, характерного для каждой ретрансляционной станции, и общего параметра передачи, который является общим для всех ретрансляционных станций. 3. Способ по п.1, в котором способ содержит этапы, на которых определяют ...

АДАПТАЦИЯ ОБРАТНОЙ СВЯЗИ И СКОРОСТИ ПЕРЕДАЧИ ДАННЫХ ДЛЯ MIMO-ПЕРЕДАЧИ В СИСТЕМЕ ДУПЛЕКСНОЙ СВЯЗИ С ВРЕМЕННЫМ РАЗДЕЛЕНИЕМ КАНАЛОВ (TDD)

... 1. Способ передачи данных в системе беспроводной связи, содержащий этапы, на которых ! передают первый опорный сигнал из передатчика в приемник; ! принимают индикатор качества канала (CQI) приема или информацию схемы модуляции и кодирования (MCS) из приемника; ! принимают второй опорный сигнал из приемника; ! выбирают матрицу предварительного кодирования на основе второго опорного сигнала; и ! отправляют передачу с множеством входов и множеством выходов (MIMO) в приемник на основе информации CQI или MCS и матрицы предварительного кодирования. ! 2. Способ по п. 1, в котором матрицу предварительного кодирования выбирают с помощью приемника на основе первого опорного сигнала, при этом информацию CQI или MCS определяют с помощью приемника на основе матрицы предварительного кодирования и оценки шумов и взаимных помех в приемнике. ! 3. Способ по п. 1, в котором при выборе матрицы предварительного кодирования выбирают матрицу предварительного кодирования в соответствии с критерием выбора, также ...

ФОРМИРОВАНИЕ СПЕКТРА ДЛЯ УМЕНЬШЕНИЯ ОТНОШЕНИЯ ПИКОВОЙ И СРЕДНЕЙ МОЩНОСТЕЙ В БЕСПРОВОДНОЙ СВЯЗИ

... 1. Устройство, содержащее ! по меньшей мере, один процессор, сконфигурированный для выполнения формирования спектра на символах модуляции для получения спектрально сформированных символов и для формирования сигнала мультиплексирования с частотным разделением единой несущей (SC-FDM) на основе спектрально сформированных символов, и ! память, соединенную, по меньшей мере, с одним процессором. ! 2. Устройство по п.1, в котором, по меньшей мере, один процессор сконфигурирован для выполнения формирования спектра в частотной области в пределах выделенного диапазона частот. ! 3. Устройство по п.1, в котором, по меньшей мере, один процессор сконфигурирован для выполнения формирования спектра в частотной области с расширением диапазона частот. ! 4. Устройство по п.1, в котором, по меньшей мере, один процессор сконфигурирован для преобразования символов модуляции в частотную область для получения символов частотной области и для выполнения формирования спектра на символах частотной области для получения ...

СХЕМА УПРАВЛЕНИЯ ПОВТОРНОЙ ПЕРЕДАЧЕЙ И УСТРОЙСТВО БЕСПРОВОДНОЙ СВЯЗИ

... 1. Способ управления повторной передачей при связи со многими входами и многими выходами, содержащий этапы, на которых: определяют, какой фактор возникновения ошибки является доминирующим фактором возникновения ошибки; и изменяют схему формирования или схему передачи для пакета повторной передачи согласно определенному фактору возникновения ошибки. 2. Способ управления повторной передачей по п.1, в котором, на этапе определения доминирующего фактора возникновения ошибки, одно из межпоточных помех и шумов определяется доминирующим фактором возникновения ошибки. 3. Способ управления повторной передачей по п.2, в котором, на этапе определения доминирующего фактора возникновения ошибки, межпоточные помехи определяются доминирующим фактором возникновения ошибки, когда изменение значения оценки канала со временем находится на или является большим, чем предопределенный уровень, и шумы определяются доминирующим фактором возникновения ошибки, когда есть подпоток, обладающий более низкой принимаемой ...

СИСТЕМА СВЯЗИ МНОГОСТАНЦИОННОГО ДОСТУПА С ОРТОГОНАЛЬНЫМ ЧАСТОТНЫМ РАЗДЕЛЕНИЕМ КАНАЛОВ (OFDMA) CО МНОГИМИ ВХОДАМИ И ВЫХОДАМИ (MIMO)

... 1. Устройство, содержащее !множество блоков обработки сигналов для обработки сигналов, принятых от множества антенн, причем блоки обработки сигналов управляются с помощью управляющих сигналов режима работы; ! устройство оценки канала для оценки характеристик канала с использованием обработанных сигналов в соответствии с режимом работы; ! уравниватель и сумматор, соединенные с устройством оценки канала, для формирования выравненного и комбинированного сигнала, с использованием обработанных сигналов и предполагаемых характеристик канала; и ! устройство оценки отношения мощности несущей к совокупному уровню помех и шумов (CINR), соединенное с уравнивателем и сумматором, для оценки CINR из выравненного и комбинированного сигнала, причем предполагаемое CINR используется для формирования управляющих сигналов режима работы. ! 2. Устройство по п.1, в котором каждый из блоков обработки сигналов содержит ! входной процессор РЧ-сигнала для выполнения радиочастотных функций над одним из сигналов; !

УСТРОЙСТВО И СПОСОБ ПЕРЕДАЧИ/ПРИЕМА ДАННЫХ В СИСТЕМЕ СВЯЗИ, ИСПОЛЬЗУЮЩЕЙ СХЕМУ МНОЖЕСТВЕННОГО ДОСТУПА

... 1. Способ передачи данных передатчиком в системе связи, которая делит весь диапазон частот на множество диапазонов субчастот, заключающийся в том, что назначают n ячеек кадров в качестве ячеек кадров передачи пакетированных данных для передачи пакетированных данных из числа множества ячеек кадров, причем ячейка кадров занята в течение первого временного интервала множеством частотно-временных ячеек, занятых вторым временным интервалом и m диапазонами субчастот, назначают оставшиеся ячейки кадров, кроме ячеек кадров передачи пакетированных данных для передачи пакетированных данных, в качестве ячеек кадров передачи данных управления для передачи данных управления, и передают пакетированные данные передачи через ячейки кадров передачи пакетированных данных, если пакетированные данные передачи существуют, и передают данные управления передачи через ячейки кадров передачи данных управления, если данные управления передачи существуют. 2. Способ по п.1, в котором по меньшей мере одну из ячеек ...

ОКОНЕЧНОЕ УСТРОЙСТВО И УСТРОЙСТВО БАЗОВОЙ СТАНЦИИ

... 1. Оконечное устройство, содержащее: ! - модуль управления, который задает длину интервала отсутствия передачи, включенного в RACH (канал с произвольным доступом), передаваемый в устройство базовой станции, на основе информации радиуса соты устройства базовой станции; и ! - передающий модуль канала с произвольным доступом, который передает канал с произвольным доступом, включающий в себя интервал отсутствия передачи, имеющий длину, заданную посредством модуля управления, в устройство базовой станции. ! 2. Оконечное устройство по п.1, в котором модуль управления задает длину интервала отсутствия передачи как равную или превышающую общее значение времени задержки на распространение в нисходящей линии связи и задержки на распространение в восходящей линии связи. ! 3. Оконечное устройство по п.1, в котором: ! - канал с произвольным доступом, передаваемый посредством передающего модуля канала с произвольным доступом, содержит избыточный интервал, первый интервал сигнала запроса на установление ...

VERFAHREN UND ANORDNUNG ZUR SELEKTIV EINGESCHALTETEN DIVERSITYSIGNALISIERUNG IN EINEM FUNKKOMMUNIKATIONSSYSTEM

Vorrichtung zur Übertragung von Daten

Spreizspektrumkommunikationsverfahren

Verfahren zur Kanalschätzung bei Verwendung verschiedener Modulationsverfahren innerhalb eines Signalintervalls

Verfahren zur Bestimmung von Kanalparametern in einem Mobilfunkempfänger bezüglich eines zweiten Teils eines Signalintervalls, wobei das Signalintervall einen mit einem ersten Modulationsverfahren (GFSK) modulierten ersten Teil (ET) des Signalintervalls und einen mit einem zweiten Modulationsverfahren (DMPSK) modulierten zweiten Teil (ZT) des Signalintervalls umfasst, mit dem Schritt: - Ermitteln der Kanalparameter (c(i)) bezüglich des mit dem zweiten Modulationsverfahren (DMPSK) modulierten zweiten Teils (ZT) des Signalintervalls unter Verwendung eines empfangenen Datensignals aus dem ersten Teil (ET) des Signalintervalls.

Methode zur adaptiven Sendewiederholungsanforderung (ARQ) in einem Mobilfunkkommunikationssystem auf Grund von Funkverbindungsmessungen an der Empfangsseite

ADAPTIVES PUNKT-ZU-PUNKT-MIKROWELLENFUNKSYSTEM

Verfahren zum Erhalten von Informationen über die Kanalqualität von mindestens einem Unterfrequenzband

Method and apparatus for performing targeted interference suppression

Channel estimation method and system for inter-carrier interference-limited wireless communication network

A method and system for wireless communication channel estimation. A frequency offset hypothesis is determined. An interchannel interference ("ICI") matrix based on the frequency offset hypothesis is generated. Pilot channel estimates based on the ICI matrix are obtained. A correlation error of the pilot channel estimates to the frequency offset hypothesis is calculated. The correlation error is compared with a predetermined correlation error value. The frequency offset hypothesis is updated and the aforementioned steps are iteratively repeated if the correlation error is greater than the predetermined correlation error value. The pilot channel estimates are used to estimate the wireless communication channel.

A method of managing a transmission mode of a wireless device

The method is performed at the wireless device in communication with at least one further wireless device of a plurality of wireless devices and comprises receiving a signal transmitted from the further wireless device, determining a quality parameter associated with the received signal, and comparing the determined quality parameter with an existing quality parameter, and managing the transmission mode of the wireless device based on the comparison. In an alternative embodiment, the present and existing quality values are used to predict a value.

Duplex operation in a cellular communication system

A cellular communication system comprises a base station with functionality for broadcasting a base station duplex capability message to user equipments. The base station duplex capability message defines whether half duplex or full duplex (TDD or FDD) modes are supported in the base station. The message uses a transmission format which is common to a plurality of duplex modes. A user equipment receives the base station duplex capability message and uses a RACH characteristics processor to determine at least one transmit characteristic for an access message in response to the base station duplex capability message. Thus the user equipment can select a base station and a suitable duplexing scheme without having to separately monitor all the duplexing schemes.

Reciprocating pulser for mud pulse telemetry

Estimating communication quality

Non-uniform constellations

A method for efficiently generating an optimum non-uniform constellation is described. The method comprises the step of performing a first process, comprising the steps of: obtaining 201 a first constellation C_Last defined by one or more parameter values; and generating a second constellation based on the first constellation using a second process. The second process comprises: obtaining a set of candidate constellations 205, wherein the set of candidate constellations comprises the first constellation and one or more modified constellations, wherein each modified constellation is obtained by modifying the parameter values defining the first constellation, possibly using a step size variation to the parameter values 203, 205; determining the performance of each candidate constellation according to a predetermined performance measure, e.g. capacity 207; selecting 209 the candidate constellation having the best performance as the second constellation C_best. The first process further comprises ...

Subterranean communication system with redundancy

A communication system for a subterranean environment is disclosed. The system comprises a plurality of transceiver devices, each comprising means for communicating with another transceiver device using magnetic induction (2410) and means for communicating with the other transceiver device using a second communication medium (2400) other than a magnetic field. For example, the second communication medium may be a wired network. Each transceiver device is operable to switch from communicating using the second communication medium to communicating using a magnetic field when communication using said second communication medium is interrupted e.g. in the event of a mine collapse or the like. There are also independent claims for a repeater for relaying magnetic field communications, and for a time slot arrangement.

Antenna unit and method of transmission or reception

Data transfer

Method and apparatus for transmitting signals over wire connections

A method of transmission

Adaptive partitioning of traffic without additional probe traffic

Code division multiple access (CDMA) communication system

Code division multiple access (CDMA) communication system

Code division multiple (CDMA) communication system.

A multiple acces, spread-spectrum communiction system processes a plurality of information signals received by a radio carrier station (rcs)over telecommunication lines for simultaneous transmission over a radio frequency (rf)channel as a code-division-multiplexed (cdm)signal to a group of subscriber units (sus). The rcs receives a call request signal that corresponds to a telecommunication line information signal, and a user indentification signal that idenifies a user to receive the call. The rcs includes a plurality of code division multiple access (cdma)modems, one of which provides a global pilot code signal. The modems provide message code signals synhronized to the global pilot signal. Each modem combines an information signal with a message signal to provide a cdm processed signal. The rcs includes a system channel controller coupled to receive a remote call. An rf transmitter is connected to all of the modems to combine the cdm processed signals with the global pilot code signal ...

Code division multiple access (CDMA) communication system.

A multiple access, sprea-spectrum communication sysyem processes a plurality of information signals received by a radio carrier station (rcs)over telecommunication lines for simultaneous transmission over a radio frequency (rf)channel as a code-division-nultiplexed (cdm)signal to a group of subscriber units (sus0. The rcs receives a call request signal that corresponds to a telecommunication line information signal, and a user indentification signal that indentifies a suer to receive the call. The rcs includes a plurality of code division multiple access (cdma)modems, one of which provides message code signals synchronize to the global pilot signal. Each modem on information signal with a message signal to provide a cdm processed signal. The rcs includes a system channel controller coupled to receive a remote cal. An rf transmitter is connected to all of the modems to combine the cdm processed signals with the global pilot code signal to generate a cdm signal. The transmitter also modulates ...

Code division multiple access (CDMA) communication system

Code division multiple access (CDMA) communication system

RADIO COMMUNICATION WITH OFDMA AND IFDMA

ADAPTIVE RADIO COMMUNICATION

PROCEDURE AND DEVICE FOR THE REDUCTION OF TRANSFER ERRORS

PROCEDURE FOR THE PRODUCTION OF BACK ACKNOWLEDGEMENT DATA IN A WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION SYSTEM

PROCEDURE FOR THE MULTI-ADDRESS CALLING OF A MULTIPLE CALL OVER THE AIR INTERFACE

ADAPTIVE CHANNEL ASSIGNMENT FOR ISM AND UNLIZENZIERTE FREQUENCY BANDS

PROCEDURE AND ARRANGEMENT FOR THE DISPATCHING OF THE SIZE OF A CHANNEL FOR A MOBILE STATION AS FUNCTION OF THE MEASURED QUALITY

PROCEDURE FOR THE RECEIPT FROM FOR THE FEEDBACK TO THE CHANNEL QUALITY ON AT LEAST ONE FREQUENCY-PREVENTED REPRESENTATIVE INFORMATION

COMMUNICATION PROCEDURE WITH ADAPTIVE CALL CONTROL

POWER ADJUSTMENT FOR MULTIPLE ENTRANCE OF MULTIPLE OUTPUT SYSTEMS (MIMO) WITH PARTIAL CHANNEL STATUS INFORMATION (CSI)

APPOINTMENT OF A REFERENCE LEVEL VALUE FOR THE AUTOMATIC GAIN CONTROL OF A RECEIVER WITH COMMUNICATION WITH AN PACKAGE-CONCILIATORY NETWORK

LINK ADJUSTMENT PATTERN

CHANNEL QUALITY MEASUREMENTS FOR THE DESCENT OPERATIONAL FUND DISPATCHING

RANDOM ACCESS FOR WIRELESS MULTIPLE ACCESS TRANSMISSION SYSTEMS

NETWORK-STEERED THROUGHPUT FOR EXTENDED UPLINK SUBJECT

SYSTEM AND PROCEDURE FOR THE DATA COMMUNICATION IN TWO FASHIONS AND APPROPRIATE TRANSMITTER AND RECEIVER

PROCEDURE FOR STRUCTURED FREQUENCY JUMP ADJUSTMENT

PROCEDURE FOR THE INCREASE OF THE CAPACITY IN A CDMA SYSTEM

Wireless communication device and wireless communication method

Diagnostic methods and systems for multicarrier modems

CQICH allocation request header for communicating feedback information

Method and system for wireless communication networks using relaying

Network-centric link adaptation for coordinated multipoint downlink transmission

A Coordinated Multipoint (COMP) cell controller performs network-centric Sink adaptation for User Equipment (UE) in the CoMP cell. The CoMP cell controller receives at least infrequent channel estimates from a UE in the CoMP cell, from which it estimates downlink channel and thermal noise at the UE. The CoMP cell controller is aware of the desired signal to be received at the UE, and the intra-CoMP cell interference to the UE caused by transmissions to other UEs in the CoMP cell. The CoMP cell receives from the UE reports of inter-CoMP cell interference caused by transmissions by other CoMP cells. Based on the downlink channel quality, the desired signal, the intra-CoMP cell interference, the intex-CoMP cell interference, and the thermal noise, the CoMP cell controller performs link adaptation by selecting modulation and coding schemes, and other transmission parameters, for mi upcoming transmission duration (such as a TTI).

APPARATUS AND METHOD FOR DYNAMIC DIVERSITY BASED UPON RECEIVER-SIDE ASSESSMENT OF LINK QUALITY

Adaptive radio link

A method and an arrangement relating to mobile radio systems with the possibility of switching channel coding schemes

Channel quality measurements for downlink resource allocation

A SELF-ADAPTING WEIGHTED SPACE TIME TRANSMITTING DIVERSITY METHOD AND SYSTEM THEREOF

Diversity transmission modes for MIMO OFDM communication systems

Managed time division duplexed baseband signaling

The present disclosure relates to one or more techniques for communicating across multiple nodes using a single communication link. In certain embodiments, the nodes may be an indoor unit and an outdoor unit of a satellite user terminal for a satellite system. The multiple nodes may communicate with each other using a managed time division duplexed baseband signaling protocol over a single communication link.

Error detection scheme for ASQ systems

Routing device

Robust utilization of feedback information in space-time coding

RECIPROCATING PULSER FOR MUD PULSE TELEMETRY

A method of transmitting pressure pulses from a downhole location through a flowing fluid in a wellbore comprises using a linear actuator to controllably move a reciprocating member axially back and forth between a first position and a second position to at least partially obstruct flow of the flowing fluid to generate the pressure pulses. A reciprocating pulser for generating pressure pulses in a fluid flowing in a wellbore, comprises a fluid passage that allows flow of the fluid through the pulser, and a reciprocating member. A linear actuator is coupled to the reciprocating member, such that the linear actuator moves the reciprocating member in a first axial direction and then in a reverse direction to at least partially obstruct flow of the fluid through the pulser to generate pressure pulses in the flowing fluid.

ACTIVATION OF MULTIPLE XDSL MODEMS WITH IMPLICIT CHANNEL PROBE

A communication apparatus that is selectively connected to a central communication apparatus. The communication apparatus transmits a CLR signal to the central communication apparatus that indicates a capabilities list of the communication apparatus, and also requests that the central communication apparatus transmit a capabilities list of the central communication apparatus to the communication apparatus. Upon receipt of a CL signal from the central communication apparatus that indicates a capabilities list of the central communication apparatus, the communication apparatus transmits an ACK signal or a MS signal to the central communication apparatus that designates a particular communication mode.

SYSTEMS AND METHODS THAT UTILIZE A CAPACITY-BASED SIGNAL-TO-NOISE RATIO TO PREDICT AND IMPROVE MOBILE COMMUNICATION

DATA MODE SIGNALING SYSTEM FOR PCM MODEM ADAPTATION

In a full duplex PCM modem system (10) having an analog (12) and digital (18) modem, a method and apparatus is provided for on-the-fly reconfiguring of analog (12) or digital (18) modem transmitter parameters without switching back to a retrain or startup mode. In one embodiment, the transmitter parameters for the analog modem (12) are modified to take into account channel impairments, in which modified precompensation parameters are sent from the digital modem (18) to the analog modem (12) without switching out of the data mode. In another embodiment, transmit power levels sensed at the analog modem (12) which are non-optimal are adjusted by new parameters sent from the digital modem (18) without having to switch back to the startup mode. In a further embodiment, transmitter parameters in the digital modem (18) are reconfigured to provide more an increased downstream data rate from the digital modem (18) upon sensing improvement in the quality of the downstream channel without switching ...

DEVICE AND METHOD FOR ROUTING STREAMS AT A NODE IN A PACKET TRANSMISSION NETWORK

A routing device for routing streams at a node in a packet transmission network, wherein each stream is transmitted with specified parameters for its loss and delay in the network, the routing device comprising: stream admission control circuitry for receiving a stream request and for reading: (i) said specified parameters and any values for loss and delay already incurred at preceding nodes in the network, or (ii) said specified parameters as modified to take account of loss and delay already incurred at preceding nodes in the network, to determine in conjunction with existing streams already being handled by the routing device whether to accept or re-ject the stream; buffer circuitry including a plurality of buffers, wherein one or more of said buffers are allotted to said stream if the stream request has been accepted; and means for transmitting: (i) the stream request with modified values for loss and delay, or (ii) the stream request with modified parameters to take account of loss ...

PACKET TRANSMISSION VIA MULTIPLE LINKS IN A WIRELESS COMMUNICATION SYSTEM

Techniques for generating and transmitting packets on multiple links in a wireless communication system are described. In one aspect, a transmitter generates new packets for the multiple links based on the likelihood of each link being available. The transmitter determines the likelihood of each carrier being available based on whether or not there is a pending packet on that carrier and, if yes, the number of subpackets sent for the pending packet. The transmitter generates new packets such that packets for links progressively less likely to be available contain data units with progressively higher sequence numbers. The transmitter determines whether each link is available and sends a packet on each link that is available. In another aspect, the transmitter generates and sends new packets in a manner to ensure in-order transmission. In one design, the transmitter generates new packets for each possible combination of links that might be available.

NOISE LEVEL ESTIMATION

An automatic power control (APC) system for a spread-spectrum communications system includes an automatic forward power control (AFPC) system; and an automatic reverse power control (ARPC) system. In the AFPC, each subscriber unit (SU) measures a forward signal-to-noise ratio of a respective forward channel information signal to generate a respective forward channel error signal which includes a measure of the uncorrelated noise in the channel and a measure of the error between the respective forward signal-to-noise ration and a pre determined signal-to-noise value. A control signal generated from the respective forward channel error signal is transmitted as part of a respective reverse channel information signal. A base unit includes AFPC receivers which receive respective reverse channel information signals and extract the forward channel error signals therefrom to adjust the power levels of the respective forward spread-spectrum signals. In the ARPC system, each base measures a reverse ...

EARLY TERMINATION OF LOW DATA RATE TRAFFIC IN A WIRELESS NETWORK

Systems and techniques are disclosed relating to wireless communications, and more specifically, to various systems and techniques for early termination of low rate traffic in a wireless network. A physical layer packet (PLP) grouping factor K configures the PLP into K groups and an ACK/NACK is received on each group.

METHOD AND APPARATUS FOR HEADER COMPRESSION

A packet compressor 12 operates under a reliable mode or an optimistic mode. A mode determination unit 31 counts the number of ACK packets or NACK packets received by a unit time X by an ACK/NACK packet receiver 14. When the counted number of NACK packets is larger than a predetermined value Y, the mode determination unit 31 switches the operation mode of the packet compressor 12 to the reliable mode. When the counted number of ACK packets is larger than a predetermined value Z, the mode determination unit 31 switches the operation mode of the packet compressor 12 to the optimistic mode.

SYSTEM AND METHOD FOR RELAYING TURBO-CODED PIGGYBACK MESSAGES

Systems and/or methods for relaying messages between nodes in a network ( e.g. a wireless network) are provided. In accordance with certain exemplary embodiments, substantially simultaneous communications between nodes may be accomplished. At least one secondary turbo-coded message (1204) may be piggy backed onto a turbo-coded primary message (1202). Messages in the network ma y be queued and sent from a transmitter (1212) to at least one receiver base d at least in part on the signal-to-noise ratio(s) of the receiver nodes wit h respect to the transmitter. Thus, it may be possible to realize a network that reduces collision problems, reduces delays in communications, and/or in creases throughput.

MULTI INPUT MULTI OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) COMMUNICATION SYSTEM

The present invention is a technique to process signals in a communication system In one embodiment, a plurality of signal processing units processes signals received from a plurality of antennae The signal processor units are controlled by operational mode control signals A channel estimator estimates channel responses using the processed signals according to an operational mode An equalizer and combiner generates an equalized and combined signal using the received signals and the estimated channel responses A Carner to Interference Noise Ratio (CINR) estimator estimates CINR from the equalized and combined signal The estimated CINR is used to generate the operational mode control signals ...

MULTI INPUT MULTI OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (OFDMA) COMMUNICATION SYSTEM

The present invention is a technique to process signals in a communication system. In one embodiment, a plurality of signal processing units processes signals received from a plurality of antennae. The signal processor units are controlled by operational mode control signals. A channel estimator estimates channel responses using the processed signals according to an operational mode. An equalizer and combiner generates an equalized and combined signal using the received signals and the estimated channel responses. A Carrier to Interference Noise Ratio (CINR) estimator estimates CINR from the equalized and combined signal. The estimated CINR is used to generate the operational mode control signals.

SYSTEM AND METHOD FOR SEMI-ORTHOGONAL MULTIPLE ACCESS

A method for operating a transmitting device using semi-orthogonal multiple access (SOMA) includes determining power allocations and sub-quadrature amplitude modulation (sub-QAM) allocations for a first receiving device and a second receiving device in accordance with channel information associated with the first receiving device and the second receiving device, and transmitting information about a first power allocation for the first receiving device, and a first sub-QAM allocation for the first receiving device to the first receiving device.

DECODING MARGIN BASED CONFIGURATION OF TRANSMISSION PROPERTIES

The present disclosure relates to methods of configuring transmission properties in a radio network node. More particularly the disclosure pertains to configuring transmission properties based on a successful decoding of one or more transport blocks. The disclosure also relates to methods of configuring transmission properties in the uplink and in the downlink and to corresponding radio network node and computer program. According to some aspects, the disclosure proposes a method, performed in a radio network node that is communicating with a wireless device, of configuring transmission properties. The method comprises obtaining S3 information indicative of a decoding margin of a successful decoding of a first transport block transmitted, using a set of transmission properties, between the radio network node and the wireless device and reconfiguring S4 the transmission properties to be used for further transmissions between the radio network node and the wireless device, based on the obtained ...

NOISE LEVEL ESTIMATION

... ²² An automatic power control (APC) system and methods in a ²code-division-multiple-access (CDMA) system employing spread-spectrum ²modulation. The CDMA ²system has a base station (BS), and a plurality of subscriber units. A CDMA ²subscriber ²unit includes means for spreading an access channel signal, means for ²spreading a pilot ²signal, means for respectively adjusting a signal power of the spread access ²channel signal ²and the spread pilot signal, and means for combining the adjusted access ²channel signal ²and spread pilot signals to produce a reverse CDMA signal. The CDMA subscriber ²unit ²may include means for receiving a power control signal and means for adjusting ²a signal ²power of the adjusted access channel signal and spread pilot signals.² ...

SIGNAL MODULATION METHOD RESISTANT TO ECHO REFLECTIONS AND FREQUENCY OFFSETS

A method of modulating communications signals, such as optical fiber, wired electronic, or wireless signals in a manner that facilitates automatic correction for the signal distortion effects of echoes and frequency shifts, while still allowing high rates of data transmission. Data symbols intended for transmission are distributed into NxN matrices, and used to weigh or modulate a family of cyclically time shifted and cyclically frequency shifted waveforms. Although these waveforms may then be distorted during transmission, their basic cyclic time and frequency repeating structure facilitates use of improved receivers with deconvolution devices that can utilize the repeating patterns to correct for these distortions. The various waveforms may be sent in N time blocks at various time spacing and frequency spacing combinations in a manner that can allow interleaving of blocks from different transmitters. Applications to channel sounding/characterization, system optimization, and also radar ...

Method for Receiving Digital Radio Signals and a Digital Radio Signals Receiver

DUAL-MODE WIRELESS UNIT WITH TWO SPREAD-SPECTRUM FREQUENCY BANDS

The invention provides a dual-band spread-spectrum modulator (101, 103, 105) which uses a single, relatively narrow, synthesizer to serve two operating frequency bands (102, 104). In the lower frequency band, the synthesizer may operate in a high-side injection mode, while in the higher frequency range the synthesizer may operate in a low-side injection mode. In a preferred embodiment, the lower frequency range may comprise about 1850 to 1990 megahertz, while the higher frequency range may comprise about 2400 to 2483.5 megahertz.

SYSTEM FOR TRANSMITTING DIGITAL DATA, ESPECIALLY OVER AN OPTICAL LINK

Ce système de transmission, comportant un équipement d'extrémité-émission (1), et un équipement d'extrémité-réception (2), est tel qu'il comporte des moyens d'évaluation de taux d'erreurs en réception, et des moyens (7) de commande d'un . ou de plusieurs paramètres caractéristiques de l'équipement d'extrémité émission et/ou de l'équipement extrémité-réception, en fonction du taux d'erreurs ainsi évalué, de façon à optimiser en permanence ce ou ces paramètres au regard des performances réelles du système de transmission.

AUTOMATIC POWER CONTROL SYSTEM FOR A CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATIONS SYSTEM

An automatic power control (APC) system for a spread-spectrum communications system includes an automatic forward power control (AFPC) system, and an automatic reverse power control (ARPC) system. In the AFPC, each subscriber unit (SU) measures a forward signal-to-noise ratio of a respective forward channel information signal to generate a respective forward channel error signal which includes a measure of the uncorrelated noise in the channel and a measure of the error between the respective forward signal-to-noise ration and a pre determined signal-to-noise value. A control signal generated from the respective forward channel error signal is transmitted as part of a respective reverse channel information signal. A base unit includes AFPC receivers which receive respective reverse channel information signals and extract the forward channel error signals therefrom to adjust the power levels of the respective forward spread-spectrum signals. In the ARPC system, each base measures a reverse ...

ACTIVATION OF MULTIPLE XDSL MODEMS WITH IMPLICIT CHANNEL PROBE

Apparatus and method for establishing a communication link. A negotiation da ta transmitting section (54) transmits carriers to a responding communication device (4). A negotiation data receiving section (5 4) receives carriers from the responding communication device (4), in response to the transmitted carriers. A selecting device selects an appropriate communication device from a plurality of communication devices in accordance with the responding communication device (4), in order to establish a communication channel (5).

INSTALLATION OF DIGITAL TELEPHONY.

ELECTRONIC COMMUNICATIONS SYSTEM AND METHOD

УСТРОЙСТВО СВЯЗИ И СПОСОБ СВЯЗИ

Система мобильной связи, в которой устройство мобильной станции передает информацию качества приема в устройство базовой станции, причем информация качества приема указывает качество сигнала, принимаемого от устройства базовой станции, отличающаяся тем, что устройство базовой станции передает информацию для предписания передачи информации качества приема без данных восходящей линии связи, включенную в сигнал разрешения передачи данных по восходящей линии связи, и устройство мобильной станции передает информацию качества приема без данных восходящей линии связи согласно информации для предписания передачи информации качества приема без данных восходящей линии связи. Это дает возможность устройству мобильной станции передавать информацию качества приема, включающую в себя большой объем информации, даже если нет данных восходящей линии связи между устройством мобильной станции и устройством базовой станции, и возможно выполнять управление передачей, гибко реагирующее на объем информации и ...

УСТРОЙСТВО СВЯЗИ И СПОСОБ СВЯЗИ

Система мобильной связи, в которой устройство мобильной станции передает информацию качества приема в устройство базовой станции, причем информация качества приема указывает качество сигнала, принимаемого от устройства базовой станции, отличающаяся тем, что устройство базовой станции передает информацию для предписания передачи информации качества приема без данных восходящей линии связи, включенную в сигнал разрешения передачи данных по восходящей линии связи, и устройство мобильной станции передает информацию качества приема без данных восходящей линии связи согласно информации для предписания передачи информации качества приема без данных восходящей линии связи. Это дает возможность устройству мобильной станции передавать информацию качества приема, включающую в себя большой объем информации, даже если нет данных восходящей линии связи между устройством мобильной станции и устройством базовой станции, и, возможно, выполнять управление передачей, гибко реагирующее на объем информации ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ ОТЧЕТА И УПРАВЛЕНИЯ ЯЧЕЙКАМИ В СИСТЕМЕ С МНОЖЕСТВОМ НЕСУЩИХ

Предоставленные способы и устройства для облегчения управления ячейками в системе со многими несущими от терминала доступа и базовой станции. Базовая станция и терминал доступа связываются с помощью несущей с привязкой и дополнительной несущей. Алгоритм инициирования, который генерируется базовой станцией, передается на терминал доступа. Алгоритм инициирования включает в себя команды для терминала доступа передавать в виде отчета измерения нисходящей линии связи как функции событий инициирования, выявленных на несущей с привязкой и/или дополнительной несущей. Измерения нисходящей линии связи, принятые терминалом доступа, выдаются базовой станции. Команды управления ячейками основываются, в частности, на измерениях нисходящей линии связи, потом выдаются терминалу доступа базовой станцией.

СПОСІБТА ПРИСТРІЙ ДЛЯ ВИЗНАЧЕННЯ СУКУПНОСТІ ПРИЙНЯТНИХ КОМБІНАЦІЙ ТРАНСПОРТНИХ ФОРМАТІВ

Пропонуються різні варіанти здійснення способу визначення сукупності прийнятних комбінацій транспортних форматів для передачі даних в поточному часовому кадрі. На основі рівня максимальної потужності, підсумовуваних команд підвищення/зниження потужності і початкової команди керування потужністю визначають сукупність прийнятних показників регулювання потужності із змінною інтенсивністю. На основі сукупності прийнятних показників регулювання потужності із змінною інтенсивністю визначають сукупність прийнятних коефіцієнтів посилення каналів, а на основі сукупності прийнятних коефіцієнтів посилення каналів визначають сукупність прийнятних комбінацій транспортних форматів. Можливу сукупність показників регулювання потужності із змінною інтенсивністю асоціюють з сукупністю коефіцієнтів посилення каналів для визначення сукупності прийнятних коефіцієнтів посилення каналів на основі різних конструкцій ланцюга передавача, що використовується для передачі даних з мобільної станції.

Communication apparatus and communication method

A communication quality managing unit (36) acquires or calculates the communication quality of a signal received at another communication apparatus that is the other end of communication. A terminal type determining unit (41) determines the type of the other communication apparatus that is the other end of communication. A switching table storing unit (39) stores a table in which the communication quality, which is a condition for switching communication modes, is defined for the type of each other communication apparatus that is the other end of communication. A switch unit (38) refers, based on the communication quality and type of the other communication apparatus that is the other end of communication, to the table to switch the setting of communication mode for transport signals from a non-spatial multiplexing mode to a spatial multiplexing mode or from the spatial multiplexing mode to the non-spatial multiplexing mode. A transmitting unit (13) processes, based on the communication ...

Terminal device and base station device

A terminal device free of interference between an RACH and a PUSCH or the like even when a base station device with a large coverage is installed. In the device, a configuration number extraction unit ( 103 ) extracts a configuration number from a BCH received by a BCH reception unit ( 102 ). A control unit ( 104 ) determines the corresponding RACH format (the necessity of repetition, the CP length TCP, the second preamble length TPRE2, and the GT length TGT) according to the configuration number, notifies a repetition unit ( 109 ) of the result of the judgment of necessity of repetition, notifies the repetition unit ( 109 ) of the second preamble length TPRE2, notifies a CP addition unit ( 110 ) of the CP length TCP, and notifies a GT addition unit ( 112 ) of the GT length TGT. When the repetition unit ( 109 ) receives the notification of performing the repetition, it performs the repetition according to the second preamble length received from a TPRE2 determination section ( 154 ). The CP addition unit ( 110 ) produces a CP according to the CP length received from a TCP determination section ( 155 ).

Receiving apparatus

A receiving apparatus ( 10 ) provided with: a management unit ( 13 ) configured to manage a target error rate Pt in a target number of retransmission Nt; a measurement unit ( 14 ) configured to measure the initial transmission rate TPUT init of the data at a transmitting apparatus ( 10 ); and a calculation unit ( 15 ) configured to calculate, with respect to an error rate P(n) in a number of retransmission n, the reception rate TPU of data at a receiving apparatus ( 10 ) by a Equation (2A). TPUT = TPUT init Nt + Pt + 1 . [ Equation   2  A ]

Method and apparatus for time efficient retransmission using symbol accumulation

A method for communicating data is provided. In the method, an encoder receives an input bit stream. The encoder generates, based on the input bit stream, a first output bit stream based on at least a first polynomial and a second output bit stream based on at least a second polynomial. The first and second polynomials are each different from each other. The encoder forms a first packet of code symbols, having a first code rate, based on bits from the first output bit stream. A transmitter transmits the first packet. A receiver receives a first negative acknowledgment indicating unsuccessful decoding of the first packet after said transmitting of the first packet. The encoder punctures bits from the second output bit stream and forms a second packet of code symbols having a second code rate. The second code rate is different from the first code rate. The transmitter transmits the second packet in response to the receiver receiving the first negative acknowledgment.

Radio transmission control method, radio receiver apparatus, and radio transmitter apparatus

Conventionally, if the number of transmission antennas is greater than that of reception antennas, different signals simultaneously transmitted from the transmission antennas cannot be separated from one another at the receiving end, resulting in a significant degradation of received-signal quality. A transmitter and a receiver each have a plurality of antennas. The transmitter transmits a pilot signal. The receiver receives the pilot signal, calculates transmission-related information corresponding to the pilot signal, selects, based on this calculated information, a transmission signal to be used by the transmitter, and notifies the transmitter of the selected signal. The transmitter selects, from the informed transmission signal, transmission antennas and uses the selected antennas to transmit information signals, so that a signal separation can be easily performed at the receiving end.

Communication apparatus and communication method

A mobile communication system where a mobile station apparatus transmits reception quality information to a base station apparatus, the reception quality information indicating quality of a signal received from the base station apparatus, characterized in that the base station apparatus transmits information for instructing transmission of reception quality information without uplink data included in an uplink data transmission permission signal, and the mobile station apparatus transmits reception quality information without uplink data according to the information for instructing transmission of reception quality information without uplink data. This allows a mobile station apparatus to transmit reception quality information including a large amount of information even if there is no uplink data between the mobile station apparatus and the base station apparatus, and the transmission control flexibly responding to the amount of information and the frequency of transmissions of the reception quality information transmitted from the mobile station apparatus is possible.

Serdes power throttling as a function of detected error rate

A system involves a first SerDes link from a first integrated circuit (IC) to a second IC and a second link from the second IC to the first IC. Power consumption settings in circuitry of the first link are adjusted to control power consumption such that the bit error rate of the first link is maintained in a range, where the lower bound of the range is substantially greater than zero. Power consumption settings in circuitry for the second link are adjusted to control power consumption such that the bit error rate of the second link is maintained in range, where the lower bound of the range is substantially greater than zero. In one example, circuitry in the second IC detects errors in the first link and reports back via the second link. The first IC uses the reported information to determine a bit error rate for the first link.

System and method for achieving accelerated throughput

Systems and methods for transporting data between two endpoints over an encoded channel are disclosed. Data transmission units (data units) from the source network are received at an encoding component logically located between the endpoints. These first data units are subdivided into second data units and are transmitted to the destination network over the transport network. Also transmitted are encoded or extra second data units that allow the original first data units to be recreated even if some of the second data units are lost. These encoded second data units may be merely copies of the second data units transmitted, parity second data units, or second data units which have been encoded using erasure correcting coding. At the receiving endpoint, the second data units are received and are used to recreate the original first data units.

Method and apparatus for determining channel state information

A mobile station receiving a signal from a base station experiences time/frequency varying channel conditions. In order to get the maximum throughput from a base-station, it is necessary to adjust the modulation and coding schemes to the actual channel quality. To do so, mobile receivers are required to probe the radio channel condition and feedback a limited set of estimated channel state information parameters such as CQI, RI, and PMI. The invention uses modulation-specific mutual information as a basic metric for CQI-PMI-RI computation to yield high bandwidth efficiency under both flat fading and interference conditions as well as time and frequency selective fading and interference conditions, at reasonable complexity.

Method for Transmitting Data Between a Radio Transmitting Device and a Radio Receiving Device

A method for transmitting data between a radio transmitting device and a radio receiving device includes transmitting a frame structure over a radio channel, the frame structure including a control channel and a data channel. The method further includes detecting a quality degradation of the radio channel, selecting a bit from the data channel and increasing a transmission power of the selected bit when the quality degradation of the radio channel is detected.

Multi-user downlink linear MIMO precoding system

A method implemented in a base station used for a downlink multi-user (MU) multi-input multi-output (MIMO) system is disclosed. The method includes receiving an indication of a quantized matrix from each of a plurality of scheduled user equipments, precoding data streams for the plurality of scheduled user equipments, transmitting the precoded data to the plurality of scheduled user equipments. Other methods and some apparatuses for wireless communications also are disclosed.

SERIAL DATA COMMUNICATION METHOD AND SERIAL DATA COMMUNICATION DEVICE

A master device and slave devices are connected with each other through an SDA and an SCL, and at least one of a serial communication data signal communicated through the SDA and a serial communication clock signal communicated through the SCL is latched with use of a noise removal clock signal whose frequency is higher than that of the serial communication clock signal, and is taken in. 1. A serial data communication method with use of a data line and a clock line , comprising the steps of:latching at least one of a data signal communicated through the data line and a clock signal communicated through the clock line, the latching being carried out with use of a signal whose frequency is higher than that of the clock signal; andtaking in the at least one of the data signal and the clock signal.2. The serial data communication method as set forth in claim 1 , further comprising the step of:comparing the at least one of the data signal and the clock signal before the latching with the at least one of the data signal and the clock signal after the latching; andsetting a level of the at least one of the data signal and the clock signal after the latching in such a way that, in a case where the level of the at least one of the data signal and the clock signal after the latching is identical with a level of the at least one of the data signal and the clock signal before the latching, the level of the at least one of the data signal and the clock signal after the latching is set at such a level which is identical between the at least one of the data signal and the clock signal after the latching and the at least one of the data signal and the clock signal before the latching, and, in a case where the level of the at least one of the data signal and the clock signal after the latching is different from the level of the at least one of the data signal and the clock signal before the latching, the level of the at least one of the data signal and the clock signal after the ...

Interference mitigation techniques for air to ground systems

A method for air to ground communication interference mitigation within an aircraft equipped with a multi-beam array antenna includes adjusting a modulation symbol interleaving and/or forward error correction of an aircraft receiver interface in response to detected interference from an interferer. The method further includes reducing a data rate of the aircraft receiver interface when the adjusting of the modulation symbol interleaving and/or forward error correction does not mitigate the detected interference. Another method for interference mitigation may include performing antenna beam-steering away from a geographic (GEO) arc during an aircraft turn. This method further includes reducing an aircraft transmitter transmit power when a signal quality of a forward link is within a predetermined range of a signal quality threshold.

Optical communication apparatus

An apparatus has frame loss detecting unit 14 for detecting frame loss of a data frame; dispersion amount control request transmission device for transmitting, when the frame loss detecting device 14 detects the frame loss in an undetected state of an input break of an optical signal by optical input break detecting unit 13 , an optical signal of a dispersion amount control request pattern to the opposite apparatus at a bit rate lower than that for transmitting the optical signal of the data frame until the frame loss becomes undetected state; and dispersion amount control request receiving device for receiving the optical signal of the dispersion amount control request pattern transmitted from the opposite apparatus, wherein dispersion compensator 21 controls the dispersion amount of transmission line between the apparatus and the opposite apparatus when the dispersion amount control request receiving device receives the optical signal of a specific pattern.

METHOD FOR COMPENSATING MISMATCH OF IN-PHASE SIGNAL AND QUADRATURE SIGNAL OF TRANSMITTER/RECEIVER

A method for compensating mismatches of an in-phase signal and a quadrature signal of a transmitter/receiver is provided. The method includes: receiving a plurality of test signals to generate two groups of factors, respectively, where each group of factors is applied to two multipliers utilized for compensating a gain mismatch and a phase mismatch of the in-phase signal and the quadrature signal of the transmitter/receiver; then calculating a delay mismatch of the in-phase signal and the quadrature signal according to the two groups of factors. 1. A method for compensating a mismatch of an in-phase signal and a quadrature signal of a receiver , wherein the receiver comprises: a first mixer, for mixing a received signal with a first local oscillation signal to generate a first signal;', 'a first multiplier, coupled to the first mixer, for generating an adjusted first signal according to the first signal; and', 'an adder, coupled to the first multiplier;, 'a first channel, comprising a second mixer, for mixing the received signal with a second local oscillation signal to generate a second signal; and', 'an adjustable delay unit, coupled to the second mixer, for delaying the second signal to generate a delayed second signal; and, 'a second channel, comprisinga second multiplier, coupled between the adjustable delay unit and the adder, for generating an adjusted second signal according to the delayed second signal, wherein the adder adds the adjusted first signal and the adjusted second signal to generate a compensated first signal;wherein the compensated first signal is one of the in-phase signal and the quadrature signal, and the delayed second signal is the other one of the in-phase signal and the quadrature signal; and disabling the adjustable delay unit;', 'receiving a first test signal to serve as the received signal to determine a first group of factors of the first multiplier and the second multiplier;', 'receiving a second test signal to serve as the received ...

TRANSMISSION CHARACTERISTIC ADJUSTMENT DEVICE, TRANSMISSION DEVICE AND METHOD FOR ADJUSTING TRANSMISSION CHARACTERISTIC

A transmission characteristic adjustment device includes: a setting process portion that sets a setting value concerning each transmission characteristic of a plurality of electric signals to at least one of a sending device that sends the plurality of electric signals and a receiving device that receives the plurality of electric signals; a generation process portion that acquires each error rate calculated based on identification information included in each of the plurality of electric signals whenever the setting value is changed, and generates a table on which a plurality of sets of the setting value and the error rate are recorded; and an adjustment process portion that adjusts the setting value based on the table. 1. A transmission characteristic adjustment device comprising:a setting process portion that sets a setting value concerning each transmission characteristic of a plurality of electric signals to at least one of a sending device that sends the plurality of electric signals and a receiving device that receives the plurality of electric signals;a generation process portion that acquires each error rate calculated based on identification information included in each of the plurality of electric signals whenever the setting value is changed, and generates a table on which a plurality of sets of the setting value and the error rate are recorded; andan adjustment process portion that adjusts the setting value based on the table.2. The transmission characteristic adjustment device as claimed in claim 1 , wherein the adjustment process portion monitors the error rate claim 1 , and adjusts the setting value when the error rate exceeds a threshold value.3. A transmission device comprising: a setting process portion that sets a setting value concerning each transmission characteristic of a plurality of electric signals to at least one of a sending device that sends the plurality of electric signals and a receiving device that receives the plurality of electric ...

Dynamic uplink resource allocation method and apparatus

An uplink resource allocation method and apparatus determine Modulation and Coding Scheme (MCS) level dynamically based on an MCS index table in a wireless communication system. The dynamic uplink resource allocation method of the present disclosure includes normalizing an uplink transmission power; selecting one of a current Modulation and Coding Scheme (MCS) index table and at least one candidate MCS index table; and determining a MCS level using the normalized transmission power and the selected MCS index table. The dynamic uplink resource allocation method and apparatus of the present disclosure is capable of determining the MCS level depending on the MCS index table selected optimally in consideration of the number of users and uplink resource utilization ratio of the base station that are varying as time goes, thereby enhancing single user throughput and sector throughput and thus service quality.

RECEIVER-SIDE ESTIMATION OF AND COMPENSATION FOR SIGNAL IMPAIRMENTS

A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an I/O mismatch for the receiver is estimated and compensation for the estimated I/O mismatch is performed. After compensating for the estimated receiver I/O mismatch, the carrier frequency offset is re-estimated. 1. A method of operating a receiver , comprising:receiving a repeating or periodic signal;based on the signal, estimating a carrier frequency offset for the receiver;based on the signal and the estimated carrier frequency offset, estimating an I/O mismatch for the receiver;compensating for the estimated I/O mismatch; andafter compensating for the estimated I/Q mismatch, re-estimating the carrier frequency offset.2. The method of claim 1 , further comprising:after re-estimating the carrier frequency offset, re-estimating the I/O mismatch for the receiver; andcompensating for the re-estimated I/O mismatch.3. The method of claim 2 , further comprising:after compensating for the re-estimated I/O mismatch, compensating for the re-estimated carrier frequency offset.4. The method of claim 3 , further comprising claim 3 , after compensating for the re-estimated carrier frequency offset:estimating channel distortion and transmitter-side I/O mismatch; andcompensating for the estimated channel distortion and transmitter-side I/O mismatch.5. The method of claim 4 , wherein estimating the transmitter-side I/O mismatch comprises:receiving pilot symbols that are symmetric with respect to a zero frequency; andusing the pilot symbols to make frequency response estimates at specified frequencies.6. The method of claim 5 , wherein estimating the transmitter-side I/O mismatch further comprises interpolating between the frequency response estimates at the specified frequencies.7. The method of claim 5 , wherein the specified frequencies comprise mirror frequencies.8. The method of claim 4 , ...

CHANNEL REUSE IN COMMUNICATION SYSTEMS

A method includes determining a signal strength value for a first received signal received from a first station in a first network. The first received signal is received in the first network through a shared communication medium that is shared with a second network. The method includes receiving an indicator of a signal strength value determined for a second received signal from a second station in the second network. Based on the signal strength value for the first received signal and based on the indicator of the signal strength value determined for the second received signal, a detection threshold is selected such that, in response to a third received signal having a signal strength in excess of the detection threshold, the third received signal is processed according to a protocol of the first network and is not processed according to a protocol of the second network. 1. A method of communicating over a shared communication medium , comprising:determining a signal strength value for a first received signal received from a first station in a first network based on at least one of a portion of a detected preamble of the first received signal and a portion of a detected frame control of the first received signal, wherein the first received signal is received in the first network through the shared communication medium that is shared with a second network;receiving an indicator of a signal strength value determined for a second received signal from a second station in the second network; and 'selecting a detection threshold such that, in response to a third received signal having a signal strength in excess of the detection threshold, the third received signal is processed according to a protocol of the first network and is not processed according to a protocol of the second network.', 'based on the signal strength value for the first received signal and based on the indicator of the signal strength value determined for the second received signal,'}2. The method of ...

COMMUNICATION APPARATUS AND COMMUNICATION METHOD

A communication level table storage unit stores a communication level table that defines correspondence between a communication level at least defined by MCS (modulation scheme and coding rate) and a range of required CINR at the communication level. A communication quality management unit obtains CINR of a received signal at another communication apparatus which is a communication partner. A setting unit refers to the communication level table, and when a difference between a representative value of a range of required CINR at a current communication level and a representative value of a range of required CINR of CINR at a communication level which is one level higher is more than or equal to a threshold value, sets a communication level such that the obtained CINR of the received signal is included in the range of required CINR. 1. A communication apparatus comprising:a storage unit configured to store information that defines correspondence of a communication level at least defined by a modulation scheme and a coding rate with a range of a required carrier to interference and noise ratio at said communication level;a communication quality management unit configured to obtain a carrier to interference and noise ratio of a received signal at another communication apparatus which is a communication partner;a setting unit configured to refer to the information that defines said correspondence in said storage unit, and when a difference between a representative value of a range of a required carrier to interference and noise ratio at a current communication level and a representative value of a range of a required carrier to interference and noise ratio of a carrier to interference and noise ratio at a communication level which is one level higher is more than or equal to a threshold value, set a communication level such that said obtained carrier to interference and noise ratio of the received signal is included in the range of the required carrier to interference ...

Multiple spatial channel transmission with rate control

A MIMO ARC transmitter derives demux streams ( 15, 20 ) carrying different parts of the information, at given data rates, processes each demux stream by coding and modulation ( 25, 30 ) before transmission over the channels, and varies ( 50, 165 ) the coding or modulation according to channel conditions, and controls the data rates ( 50, 155 ) according to conditions of the channels independently of the variations in coding and modulation. The separate control of processing and of data rates for each demux stream can provide a better balance of rapid response to changing conditions and efficiency in less rapidly changing conditions. The frequency of updating the processing can be limited since these take more time to adapt in the receiver. Sensitivity to rapid changes can be achieved by the data rate changes since these involve less overhead than changes in the processing.

Communication device for receiving and transmitting ofdm signals in a wireless communication system

A communication device for transmitting orthogonal frequency division multiplexed (OFDM) signals in a wireless communication system. The device includes a plurality of antenna elements that transmit the OFDM signals to a receiver over a plurality of transmission channels in the wireless communication system. The device also generates weight coefficients applied to each of the plurality of subcarrier signals, and controls an amplitude and/or phase of the plurality of subcarrier signals as a function of said weight coefficients.

Channel quality measurements for downlink resource allocation

A method for reporting channel quality from a user equipment (UE) to a base station is described. The UE derives a channel quality for each of a plurality of downlink resources. The UE transmits channel quality reports in a pattern of time intervals by rotating through the plurality of downlink resources in different time intervals of the pattern, wherein a channel quality report is not transmitted by the UE in each time interval of a frame.

Methods and Apparatus for Error Correction for Coordinated Wireless Base Stations

Methods and apparatus for coordinated error correction among a set of wireless base stations in communication with one another. In one embodiment, the wireless base stations are part of a cellular network having various cellular base stations (including a serving base station, and multiple supplemental base stations), and transmit multiple redundant versions of a transport block using a Hybrid Automatic Repeat Request (HARQ) based scheme. The aggregate of the multiple redundant versions of the transport block are soft combined and acknowledged (ACK) or not-acknowledged (NACK) by the cellular equipment. The serving base station and supplemental base station devices dynamically configure the bundled acknowledgment operation based on various desired operational attributes relating to the operational parameters of the network. 1. A method for receiving a wireless communication , comprising:receiving a transmission schedule from a first transmitter over a wireless interface;receiving a first data packet from the first transmitter over the wireless interface;receiving a second error correction data packet from a second transmitter over the wireless interface;decoding the received first data packet in conjunction with the second error correction data packet; andtransmitting an acknowledgement message.2. The method of claim 1 , wherein the acknowledgment message is directed to the first transmitter.3. The method of claim 1 , wherein the acknowledgment message is directed to the second transmitter.4. The method of claim 1 , wherein the first data packet is identified with a first identifier.5. The method of claim 4 , wherein the second error correction data packet is identified with the first identifier.6. The method of claim 5 , further comprising:soft combining the first data packet and second error correction data packet.7. The method of claim 1 , wherein the acknowledgment message indicates either a successful decoding or an unsuccessful decoding.8. The method of claim 7 ...

Method and Communication Device for Power Savings in Chip-to-Chip Signalling

A method in a communication device and a communication device ( 100 ) for adapting a transmission of data are provided. The transmission is transferred from a first chip ( 110 ) to a second chip ( 120 ) over a chip-to-chip interface ( 104, 304 ). The chip-to-chip-interface comprises a wired connection between the first chip and the second chip which is comprised in the communication device. The communication device receives ( 201 ) the radio signal ( 330 ), comprising the transmission of data from another communication device. The communication device determines ( 202 ), from the 204 received radio signal ( 330 ), modulation and coding information, which is used for determining ( 203 ) a channel quality. Further, the communication device ( 100 ) adapts ( 204 ) the transmission of data based on the determined channel quality of the received radio signal ( 330 ) in such way that at least the determined channel quality is obtained when transferring ( 205 ) the transmission of data over the chip-to-chip interface to the second chip.

Stable low power mode for multicarrier transceivers

A stable Low Power Mode (LPM) for multicarrier transceivers is described that at least provides transmit power savings while enabling receiver designs that can easily operate without the detrimental effects of fluctuating crosstalk. In one exemplary embodiment, the LPM achieves power savings by reducing the number of used subcarriers without actually performing a power cutback on those subcarriers, thereby allowing a receiver to measure the SNR or noise levels and determine the crosstalk noise on the line regardless of a crosstalking modem being in a LPM or not.

MACRO NETWORK OPTIMIZATION WITH ASSISTANCE FROM FEMTO CELLS

A received signal strength indicator returned from a femto cell is employed to optimize a multiple access wireless communication network. For example, a method operable in a wireless communications network is disclosed. The method comprises receiving a received signal strength indicator from a femto cell situated in a geographical area within a multiple access wireless communication network, and optimizing the multiple access wireless communication network as a function of the received signal strength indicator. 1. A system , comprising:a processor; and receiving an aggregation of resource reservation control indicators from a device of a network;', 'determining an interference from the device based on the aggregation of resource reservation control indicators and a determination that the interference is preventing a femto cell device from modifying a broadcast area associated with a transmission from the femto cell device to the device;', 'determining a first location where the interference satisfies a condition; and', 'initiating a first transmission of first data representing a message to relocate the femto cell device from an initial location to the first location., 'a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising2. The system of claim 1 , wherein the determining the first location where the interference satisfies the condition comprises determining the first location where the interference is below interferences determined for locations other than the first location.3. The system of claim 1 , wherein the operations further comprise monitoring the interference from the device as a function of a metric representative of a quality of service.4. The system of claim 1 , wherein the operations further comprise initiating a second transmission of second data representing a radio parameter associated with the femto cell device that is to be adjusted.5. The system of claim 1 , wherein ...

ERROR REPORTING IN MULTI-CARRIER SIGNAL COMMUNICATION

In a communication device, a multi-carrier signal with at least one group of signal carriers is received from a communication connection. For each of the signal carriers, at least one individual error value is evaluated or generated. From the individual error values, a combined error value is evaluated or generated. The combined error value is transmitted on a backchannel of the communication connection. 125-. (canceled)26. An apparatus for providing error information on a backchannel of a communication connection for vectoring , the apparatus comprising: receive a multi-carrier signal comprising signal carriers represented by symbols;', 'determine individual error values for the received symbols based on expected symbols;', 'determine a combined error value based on the individual error values; and', 'generate a quantized combined error value from the determined combined error value; and, 'circuitry configured toa transmitter circuit configured to transmit a backchannel signal comprising the quantized combined error value.27. The apparatus according to claim 26 , wherein the circuitry is configured to determine quantized individual error values based on the determined individual error values.28. The apparatus according to claim 27 , wherein the quantized combined error value comprises a higher number of bits than a quantized individual error value of the determined quantized individual error values.29. The apparatus according to claim 27 , wherein the circuitry is configured to generate the backchannel signal further comprising the quantized individual error values.30. The apparatus according to claim 26 , wherein the backchannel signal comprises an error reporting block comprising the quantized combined error value.31. The apparatus according to claim 26 , wherein the circuitry is further configured to receive a compensated multicarrier signal pre-compensated based on the quantized combined error value.32. The apparatus according to claim 26 , wherein the ...

Method and Arrangement in a Wireless Communications System

A method for assisting the adaptation of a signal from a first node to a second node is provided. The first node communicates with the second node in a wireless communication system over a radio link. The second node has a codebook comprising a set of possible information alternatives for assisting the adaptation of a signal received from the first node. The second node may select an information alternative from the codebook and send it to the first node to assist the first node in adapting the signal. The first node is configured with a number of subsets, each comprising a part of the possible information alternatives. The first node requests that the second node restrict the selection of information alternatives to one of the subsets, and in response, receives an information alternative from the second node that is selected from among the subsets configured according to the configuration request. 1sending a message to the second node comprising a configuration request to the second node to restrict selection of information alternatives by the second node to at least one subset of the set of possible information alternatives, wherein each subset comprises at least a part of the codebook; andreceiving a report of an information alternative from the second node, which information alternative is selected from the at least one subset configured according to the configuration request.. A method in a first node for adapting a signal to be sent over a radio link from the first node to a second node in a wireless communication system, wherein the first node is configured to use a codebook comprising a set of possible information alternative, said method comprising: This application is a continuation of U.S. application Ser. No. 15/864,929 filed on Jan. 8, 2018, which is a continuation of U.S. application Ser. No. 15/359,711, filed on Nov. 23, 2016 and issued as U.S. Pat. No. 9,866,296, which is a continuation of U.S. application Ser. No. 14/728,119, filed on Jun. 2, 2015 ...

Mechanism to Increase the Transmission Range of a Cell Edge Station in a Wireless Network

A wireless device, system and method. The device includes a processing circuitry is configured to decode duplicate Request to Send (RTS) frames from a first access point (AP) that is part of an Extended Service Set (ESS) including a second AP, the first AP and the second AP buffering data for the device. The processing circuitry is further to cause transmission of duplicate multi-AP channel bonding (MACB) Trigger frames to the first AP and to the second AP in response to the duplicate RTS frames. Each of the duplicate RTS frames and duplicate Trigger frames have a legacy preamble portion over a first bandwidth of a corresponding wireless channel, and a MACB portion over a second narrower bandwidth of the corresponding wireless channel. The processing circuitry is further to decode a first data frame portion from the first AP and a second data frame portion from the second AP. 1. A wireless communication device comprising a memory and processing circuitry , the processing circuitry including logic and being configured to:decode duplicate Request to Send (RTS) frames from a first access point (AP), the first AP being part of an Extended Service Set (ESS) including a second AP, the first AP and the second AP buffering data for the device;cause transmission of duplicate multi-AP channel bonding (MACB) Trigger frames to the first AP and to the second AP in response to the duplicate RTS frames, the duplicate MACB Trigger frames including information on wireless channels available for data transmission to the device, wherein each of the duplicate RTS frames and each of the duplicate Trigger frames has a legacy preamble portion over a first bandwidth of a corresponding wireless channel, and a MACB portion over a second bandwidth of the corresponding wireless channel, the second bandwidth being narrower than the first bandwidth; anddecode a first data frame portion from the first AP and a second data frame portion from the second AP, a combination of the first data frame ...

DOWNHOLE ADAPTIVE MULTIBAND COMMUNICATION SYSTEM

An adaptive multiband access communication system and method for a network of downhole components located in a wellbore are disclosed. Low noise regions of a communication spectrum are identified and frequency channels within the low noise regions are assigned to the downhole components. Communications on the assigned channels are monitored for quality and adjustments are dynamically made to frequency channel assignments if the quality does not satisfy an acceptance criterion. 1. A method of communicating with communication nodes in a wellbore extending from a surface to a region of interest , comprising:providing a transmission medium for multiband medium access by a plurality of communication nodes for communication of information associated with downhole equipment;determining frequency band assignments within a frequency spectrum for multiband communication by the communication nodes on the transmission medium;transmitting, by the communication nodes, information associated with the downhole equipment to a receiver in accordance with the frequency band assignments;determining, by the receiver, quality of the received information on each frequency band;adjusting a frequency band assignment if the quality does not satisfy an acceptance criterion; andtransmitting, by the communication nodes, information associated with the downhole equipment in accordance with the adjusted frequency band assignment.2. The method as recited in claim 1 , wherein determining frequency band assignments comprises:determining a baseline noise level across the frequency spectrum; andidentifying low noise frequency bands within the frequency spectrum, wherein the low noise frequency bands have noise levels that satisfy an acceptance criterion.3. The method as recited in claim 1 , wherein the frequency band assignments are determined by a surface system at the surface of the wellbore claim 1 , and the method comprises communicating claim 1 , by the surface system the frequency band ...

COHERENT LINK QUALITY ACROSS MULTIPLE MODULATIONS

Techniques directed to attributing information regarding communications with a modulation scheme to a different modulation scheme are described. In one example, a successful communication for a higher data rate modulation scheme may be attributed to a lower data rate modulation scheme. Such attribution may infer that the lower data rate modulation scheme would have also been successful if it had been used. In another example, an unsuccessful communication for a lower data rate modulation may be attributed to a higher data rate modulation scheme. Here, such attribution may infer that the higher data rate modulation scheme would have also been unsuccessful if it had been used. 1. A method comprising:communicating, by a first node and via a communication link between the first node and a second node, with the second node according to a first modulation scheme, the first modulation scheme being associated with a first data rate;determining, by the first node, communication metric data associated with the first modulation scheme, the communication metric data associated with the first modulation scheme indicating at least one of a number of successful transmissions with the second node or a number of unsuccessful transmissions with the second node;based at least in part on the communication metric data associated with the first modulation scheme, updating, by the first node and for the communication link between the first node and the second node, communication metric data associated with a second modulation scheme that is available for communication on the link between the first node and the second node, the second modulation scheme being associated with a second data rate;based at least in part on the communication metric data associated with the second modulation scheme, selecting at least one of the first modulation scheme or the second modulation scheme; andcommunicating, by the first node, with the second node according to the selected modulation scheme.2. The ...

Resource Configuration Method, User Equipment, and Base Station

According to a resource configuration method, user equipment, and a base station that are provided in embodiments of the present invention and relate to the communications field. A specific solution is as follows: A base station sends M reference signals to UE in N time units in a time unit set, where the reference signal is used by the UE to perform channel quality measurement, and each reference signal in the M reference signals is corresponding to one piece of precoding matrix information. The base station receives channel quality indication information sent by the UE. 1. A method , comprising:sending, by a base station, M reference signals to user equipment (UE) in N time units in a time unit set, wherein the M reference signals are used by the UE to perform channel quality measurement, and each reference signal in the M reference signals corresponds to one respective piece of precoding matrix information;receiving, by the base station, channel quality indication information sent by the UE, wherein the channel quality indication information is determined by the UE according to the M reference signals;selecting, by the base station, an optimal reference signal resource for the UE according to the channel quality indication information; andsending, by the base station, an optimal reference signal to the UE according to the optimal reference signal resource.2. The method according to claim 1 , wherein the channel quality indication information comprises M channel quality measurement results claim 1 , an optimal channel quality measurement result claim 1 , or a reference signal number.3. The method according to claim 1 , wherein the time unit set is notified by the base station to the UE using higher layer signaling or a control channel.4. The method according to claim 1 , wherein the M reference signals comprise a cell-specific reference signal or a user-specific reference signal.5. The method according to claim 1 , wherein the time unit set is periodically or non- ...

METHOD FOR TRANSMIT AND RECEIVE POWER CONTROL IN MESH SYSTEMS

A method and apparatus are disclosed herein for controlling transmit power in a station (STA) of a wireless local area network (WLAN). A STA may transmit, to another STA, transmit power step size information that indicates a maximum transmission power for an operational bandwidth that the STA supports. The STA may receive, from another STA, a signal in one of the plurality of operational bandwidths that the STA supports. The received signal may include a transmission power based on the transmitted adjustment step size setting. 1. A method for controlling transmit power in a station (STA) of a wireless local area network (WLAN) , the method comprising:transmitting, from the STA, transmit power step size information that indicates an adjustment step size setting for at least one of a plurality of operational bandwidths that the STA supports; andreceiving a signal, in one of the plurality of operational bandwidths that the STA supports, having a transmission power based on the transmitted adjustment step size setting.2. The method of claim 1 , wherein the transmit power step size information is transmitted in one of a broadcast message claim 1 , a multicast message claim 1 , or a unicast message.3. The method of claim 1 , wherein the transmit power step size information is transmitted in a control frame.4. The method of claim 1 , wherein the transmit power step size information includes at least one of minimum transmit power information claim 1 , maximum transmit power information claim 1 , or a transmit power adjustment step size setting.5. A station (STA) comprising:a transmitter configured to transmit, to another STA, transmit power step size information that indicates an adjustment step size setting for at least one of a plurality of operational bandwidths that the STA supports; anda receiver configured to receive a signal, in one of the plurality of operational bandwidths that the STA supports, having a transmission power based on the transmitted adjustment step ...

Full duplex backhaul radio with mimo antenna array

A intelligent backhaul radio have an advanced antenna system for use in PTP or PMP topologies. The antenna system provides a significant diversity benefit. Antenna configurations are disclosed that provide for increased transmitter to receiver isolation, adaptive polarization and MIMO transmission equalization. Adaptive optimization of transmission parameters based upon side information provided in the form of metric feedback from a far end receiver utilizing the antenna system is also disclosed.

POWER CONTROL METHOD, APPARATUS, AND SYSTEM

The present invention discloses a power control method, apparatus, and system. A vectoring control entity acquires a power control factor Dof an itransmit end on a ksubcarrier, where the itransmit end is one transceiver of M transceivers located at a central office end, 1≦k≦K, and K indicates a quantity of subcarriers; and sends the power control factor Dto the itransmit end, so that if it is determined, according to the power control factor D, that the power control factor Dis less than a power gain factor g, of a current transmit signal of the itransmit end, on the ksubcarrier, the itransmit end modifies the power gain factor gof the current transmit signal, so that a modified power gain factor g′is less than or equal to the power control factor D. 1. A power control method , applied in a vectoring crosstalk cancellation system , comprising:{'sub': 'ii', 'sup': k', 'th', 'th', 'th, 'acquiring, by a vectoring control entity, a power control factor Dof an itransmit end on a ksubcarrier, wherein the itransmit end is one transceiver of M transceivers located at a central office end, 1≦k≦K, and K indicates a quantity of subcarriers; and'}{'sub': ii', 'ii', 'i', 'i', 'i', 'ii, 'sup': k', 'th', 'k', 'k', 'th', 'th', 'th', 'k', 'k', 'k, 'sending the power control factor Dto the itransmit end, so that if it is determined that the power control factor Dis less than a power gain factor g, of a current transmit signal of the itransmit end, on the ksubcarrier, the itransmit end modifies the power gain factor gof the current transmit signal, so that a modified power gain factor g′is less than or equal to the power control factor D.'}2. The method according to claim 1 , after the acquiring claim 1 , by a vectoring control entity claim 1 , a power control factor Dof an itransmit end on a ksubcarrier claim 1 , comprising:{'sub': ii', 'ii', 'i', 'i', 'i', 'ii', 'i, 'sup': k', 'th', 'th', 'th', 'k', 'k', 'th', 'th', 'th', 'k', 'k', 'k', 'k', 'th, 'sending, by the vectoring control ...

Optimal utilization of multiple transceivers in a wireless environment

Switching between and/or combining various multi-transceiver wireless communication techniques based on a determined characteristic of a network or a wireless link is described herein. As an example, a characteristic such as signal to noise ratio (SNR), multi-path scattering, available bandwidth, or the like, can be determined. The characteristic can then be compared with suitable thresholds for various multi-transceiver communication techniques, such as MIMO, multi-channel concatenation, channel diversity, and so on. Based on a comparison of the characteristic and the thresholds, a suitable multi-transceiver technique can be selected and implemented for the wireless link. Accordingly, a network can provide increased data rates and/or channel quality from a multi-transceiver technique that is most suited to prevailing conditions of the wireless network/link.

Systems and Methods for Waveform Selection and Adaptation

Systems, methods, and apparatuses for providing waveform adaptation are provided. In an example, a method is provided for identifying a plurality of candidate waveforms, and selecting one of the candidate waveforms for data transmission. The candidate waveforms may be identified in accordance with one or more criteria, such as a transmission capability of the transmitting device, a reception capability of the receiving device, a desired Peak-to-Average-Power-Ratio (PAPR) characteristic, adjacent channel interference (ACI) rejection requirements, spectrum localization requirements, and other criteria. The waveform selected for data transmission may be selected in accordance with one or more waveform selection criteria, such as traffic characteristic, application types, etc. 1. A method for data transmission , the method comprising:receiving, by a first user equipment (UE), an indication dynamically indicating a first waveform (WF) of at least two waveforms to use for a first data transmission; andtransmitting, by the first UE, the first data transmission using the first WF over an uplink channel based on grant based transmission of two transmission selections, the grant based transmission requiring the first UE to receive a resource grant for the first data transmission from a transmit point (TP) prior to transmitting the first data transmission over the uplink channel, wherein the at least two waveforms further include a second waveform that is different than the first waveform, the second waveform for transmitting a second data transmission over the uplink channel, and the two transmission selections comprising grant less transmission, the grant less transmission allowing the first UE or a second UE to transmit the second data transmission over the uplink channel without first receiving a resource grant for the second data transmission from the TP.2. The method of claim 1 , further comprises:transmitting, by the first UE, the second data transmission using the ...

Communication system using wired transmission line and multi-carrier modulation

A communication system that uses a wired transmission line and multi-carrier modulation includes a transmitting device and a receiving device that are connected through the wired transmission line, wherein the receiving device includes an estimator configured to estimate a first SINR (Signal-to-Interference-Plus-Noise Ratio) of a first sub-carrier and a second SINR of a second sub-carrier, the transmitting device includes a power adjustor configured to boost a transmission power for the first sub-carrier such that an SINR of the first sub-carrier reaches a first SINR threshold corresponding to a first MCS (Modulation and Coding Scheme) that is larger than the first SINR, and back off a transmission power for the second sub-carrier such that an SINR of the second sub-carrier is lowered to a second SINR threshold corresponding to a second MCS that is smaller than the second SINR, and the transmitting device allocates the first MCS to the first sub-carrier.

USER TERMINAL AND BASE STATION

To carry out communication properly even when BWP switching and repetition transmission are used, a user terminal, according to one aspect of the present disclosure, has at least one of a receiving section and a transmission section, the receiving section receiving a downlink channel that is transmitted in repetition, and the transmission section transmitting an uplink channel in repetition, in one or more partial frequency bands (BWPs (Bandwidth Parts)) configured in a carrier, and a control section that exerts control so that, when a switch from a first BWP to a second BWP is commanded or configured during the repetition transmission, at least one of the receipt of the downlink channel and the transmission of the uplink channel is stopped or carried out based on a configuration of the first BWP or a configuration of the second BWP. 1. A user terminal comprising:at least one of a receiving section and a transmission section, the receiving section receiving a downlink channel that is transmitted in repetition, and the transmission section transmitting an uplink channel in repetition, in one or more partial frequency bands (BWPs (Bandwidth Parts)) configured in a carrier; anda control section that exerts control so that, when a switch from a first BWP to a second BWP is commanded or configured during the repetition transmission, at least one of the receipt of the downlink channel and the transmission of the uplink channel is stopped or carried out based on a configuration of the first BWP or a configuration of the second BWP.2. The user terminal according to claim 1 , wherein the control section exerts control so that claim 1 , when BWP switching is commanded or configured while the repetition transmission of the downlink channel is in progress claim 1 , part or all of retransmission control signals (HARQ-ACKs) in response to each repeated transmission of the downlink channel are not transmitted.3. The user terminal according to claim 1 , wherein the control section ...

COMMUNICATION APPARATUS AND CONTROL SIGNAL MAPPING METHOD

A communication apparatus includes a circuitry and a transmitter. In operation, the circuitry generates a Demodulation Reference Signal (DMRS) and generates downlink control information indicating a mapping pattern of the DMRS from a plurality of mapping patterns, and the transmitter transmits the DMRS and the downlink control information. The plurality of mapping patterns includes a first mapping pattern and a second mapping pattern. Resource elements used for the DMRS of the second mapping pattern are same as a part of resource elements used for the DMRS of the first mapping pattern. A number of the resource elements used for the DMRS of the first mapping pattern is larger than a number of the resource elements used for the DMRS of the second mapping pattern. 1. A communication apparatus comprising:a circuitry, which, in operation, generates a Demodulation Reference Signal (DMRS) and generates downlink control information indicating a mapping pattern of the DMRS from a plurality of mapping patterns; anda transmitter, which, in operation, transmits the DMRS and the downlink control information,wherein the plurality of mapping patterns includes a first mapping pattern and a second mapping pattern,wherein resource elements used for the DMRS of the second mapping pattern are same as a part of resource elements used for the DMRS of the first mapping pattern, andwherein a number of the resource elements used for the DMRS of the first mapping pattern is larger than a number of the resource elements used for the DMRS of the second mapping pattern.2. The communication apparatus according to claim 1 , wherein resource elements claim 1 , which are used for the DMRS of the first mapping pattern and which are not used for the DMRS of the second mapping pattern claim 1 , are used for a transmission of data in the second mapping pattern.3. The communication apparatus according to claim 1 , wherein the first mapping pattern and the second mapping pattern have a resource element ...

COMMUNICATION APPARATUS AND CONTROL SIGNAL MAPPING METHOD

A communication apparatus includes a circuitry and a transmitter. In operation, the circuitry generates a Demodulation Reference Signal (DMRS) and generates downlink control information indicating a mapping pattern of the DMRS from a plurality of mapping patterns, and the transmitter transmits the DMRS and the downlink control information. The plurality of mapping patterns include a first mapping pattern and a second mapping pattern. Resource elements used for the DMRS of the second mapping pattern are same as a part of resource elements used for the DMRS of the first mapping pattern. A number of the resource elements used for the DMRS of the first mapping pattern is larger than a number of the resource elements used for the DMRS of the second mapping pattern. 1. An integrated circuit comprising: 'generating a Demodulation Reference Signal (DMRS) and generating downlink control information indicating a mapping pattern of the DMRS from a plurality of mapping patterns; and', 'circuitry, which, in operation, controlstransmission circuitry which, in operation, controls transmitting the DMRS and the downlink control information,wherein the plurality of mapping patterns includes a first mapping pattern and a second mapping pattern,wherein resource elements used for the DMRS of the second mapping pattern are same as a part of resource elements used for the DMRS of the first mapping pattern, andwherein a number of the resource elements used for the DMRS of the first mapping pattern is larger than a number of the resource elements used for the DMRS of the second mapping pattern.2. The integrated circuit according to claim 1 , wherein resource elements claim 1 , which are used for the DMRS of the first mapping pattern and which are not used for the DMRS of the second mapping pattern claim 1 , are used for a transmission of data in the second mapping pattern.3. The integrated circuit according to claim 1 , wherein the first mapping pattern and the second mapping pattern have a ...

Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal

According to one embodiment, a transmitter for transmitting at least one broadcast signal having PLP (Physical Layer Pipe) data includes: a BCH (Bose-Chadhuri-Hocquenghem) encoder configured to BCH encode the PLP data; an LDPC (Low Density Parity Check) encoder configured to LDPC encode the BCH encoded PLP data and output FECFrames (Forward Error Correction Frames); a mapper configured to map data in the FECFrames onto constellations by QAM (Quadrature Amplitude Modulation) schemes; a time-interleaver configured to time-interleave the mapped data; a frame builder configured to build a signal frame including preamble symbols and data symbols; and an OFDM (Orthogonal Frequency Division Multiplexing) modulator configured to modulate data in the signal frame by an OFDM scheme. The PLP data are processed by an LDPC scheme for a long or a short LDPC FECframe. The preamble symbols include signaling information for the time-interleaved PLP data. The data symbols include the time-interleaved PLP data.

Network Admission Control

Systems and methods for managing a network are disclosed. One method can comprise determining a first modulation rate associated with a network device. A beacon can be transmitted at a second modulation rate, wherein the second modulation rate is greater than the first modulation rate. A user device can be associated with the network device based on the beacon if the user device is configured to support the second modulation rate. 1. A method comprising:sending, via a network device, a beacon at a first modulation rate, wherein the first modulation rate is less than a second modulation rate;sending, to a user device, data indicative of at least one first signal characteristic;connecting, based on the user device being configured to receive the beacon and the at least one first signal characteristic satisfying a threshold, the user device to the network device; andsending, to the user device, data at the second modulation rate.2. The method of claim 2 , wherein the network device comprises an access point for a local area network.3. The method of claim 2 , wherein the beacon comprises a beacon frame.4. The method of claim 2 , wherein the beacon comprises information to facilitate the user device connecting to a network via the network device.5. The method of claim 2 , wherein connecting claim 2 , based on the user device being configured to receive the beacon and the at least one first signal characteristic satisfying a threshold claim 2 , the user device to the network device comprises:determining, based on the at least one first signal characteristic, an estimated connection quality; anddetermining that the estimated connection quality satisfies the threshold.6. The method of claim 2 , wherein the at least one signal characteristic comprises one or more of a Received Signal Strength Indicator (RSSI) or a noise floor of the network device.7. A method comprising:receiving, via a network device, a beacon transmitted at a first modulation rate, wherein the first ...

Adaptive Time Diversity And Spatial Diversity For OFDM

An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix. 125-. (canceled)26. A method comprising:receiving by a plurality of antennas of a first device a first Orthogonal Frequency-Division Multiplexing (OFDM) signal from a plurality of antennas of a second device over a wireless channel;transmitting information via the plurality of antennas of the first device to the second device in response to the first OFDM signal, wherein the information indicates that a second OFDM signal to be transmitted by the second device to the first device is to use one of transmitter diversity or spatial multiplexing; andreceiving at the plurality of antennas of the first device the second OFDM signal from the from plurality of antennas of the second device over the wireless channel, wherein the second device uses one of transmitter diversity or spatial multiplexing to transmit the second OFDM signal based on the information.27. The method of claim 26 ,wherein transmitter diversity comprises transmitting by a first antenna of the plurality of antennas of the second device the second OFDM signal and transmitting by a second antenna of the plurality of antennas of the second device a fully correlated second OFDM signal, andwherein spatial multiplexing comprises transmitting a first portion of the second OFDM signal over a first transmission path and ...

Forwarding Audio Content Based On Network Performance Metrics

Embodiments described herein involve facilitating playback in a media playback system that includes a first media device and a second media device. An example implementation involves comparing one or more first network performance metrics corresponding to a network interface of the first media device to one or more second network performance metrics corresponding to a network interface of the second media device, wherein the comparison indicates that the first media device has a better network connection than the second media device. Based on the comparison, the first media device is configured to forward data indicating audio content from a network source to the second media device to facilitate playback of the audio content by the second media device. The second media device plays back particular audio content via one or more speakers by receiving data indicating the particular audio content from the first media device. 1. In a media playback system comprising at least a first media device and a second media device , a method comprising:comparing one or more first network performance metrics corresponding to a network interface of the first media device to one or more second network performance metrics corresponding to a network interface of the second media device, wherein the comparison indicates that the first media device has a better network connection than the second media device;based on the comparison indicating that the first media device has a better network connection than the second media device, configuring the first media device to forward data indicating audio content from a network source to the second media device to facilitate playback of the audio content by the second media device, wherein the network source is separate and distinct from the first media device and the second media devices; andthe second media device playing back particular audio content via one or more speakers, wherein playing back particular audio content comprises the second ...

DYNAMIC INTER-FRAME SPACE PROCESSING IN HIGH EFFICIENCY WIRELESS LAN

The present invention relates to a transmission and receiving method and apparatus using a dynamically determined Inter-Frame Space (IFS) in a Wireless Local Area Network (WLAN). According to one aspect of the present invention, a method for processing a received frame by a Station (STA) in a WLAN may include receiving a first frame including downlink data for a plurality of STAs, if the received first frame has no error, transmitting a second frame including an ACKnowledgement (ACK) of the STA simultaneously with ACKs of one or more other STAs, and if the received first frame has an error, performing carrier sensing using a variably determined IFS. 1. A method for processing a received frame by a Station (STA) in a Wireless Local Area Network (WLAN) , the method comprising:receiving a first frame including downlink data for a plurality of STAs;if no error occurs in the received first frame, transmitting a second frame including an ACKnowledgement (ACK) of the STA, the ACK of the STA being transmitted simultaneously with ACKs of one or more other STAs; andif an error occurs in the received first frame, performing carrier sensing using a variably determined Inter-Frame Space (IFS).2. The method according to claim 1 , wherein the IFS is variably determined based on an estimated transmission bandwidth of a second frame transmittable by the plurality of STAs without including the STA.3. The method according to claim 2 , wherein an IFS value for the estimated transmission bandwidth of the second frame being a first bandwidth is different from an IFS value for the estimated transmission bandwidth of the second frame being a second bandwidth different from the first bandwidth.4. The method according to claim 2 , wherein an IFS value for the estimated transmission bandwidth of the second frame being a first bandwidth is larger than an IFS value for the estimated transmission bandwidth of the second frame being a second bandwidth larger than the first bandwidth.5. The method ...

RADIO WITH SPATIALLY-OFFSET DIRECTIONAL ANTENNA SUB-ARRAYS

An intelligent backhaul radio that has an advanced antenna system for use in PTP or PMP topologies. The antenna system provides a significant diversity benefit. Antenna configurations are disclosed that provide for increased transmitter to receiver isolation, adaptive polarization and MIMO transmission equalization. Adaptive optimization of transmission parameters based upon side information provided in the form of metric feedback from a far end receiver utilizing the antenna system is also disclosed. 1one or more demodulator cores, wherein each demodulator core is configured to demodulate at least one receive symbol stream;a plurality of receive radio frequency (RF) chains, wherein each receive RF chain is configured to convert from a receive RF signal to a receive chain output signal;one or more modulator cores, wherein each modulator core is configured to produce at least one transmit symbol stream;a plurality of transmit radio frequency (RF) chains, wherein each transmit RF chain is configured to convert from a transmit chain input signal to a transmit RF signal;a first directional antenna array comprising a plurality of first directional antenna sub-arrays, wherein each first directional antenna sub-array comprises a plurality of first directional antenna elements, and wherein each first directional antenna sub-array is coupled or couplable to at least one of the plurality of receive RF chains; anda second directional antenna array comprising a plurality of second directional antenna sub-arrays, wherein each second directional antenna sub-array comprises a plurality of second directional antenna elements, and wherein each second directional antenna sub-array is coupled or couplable to at least one of the plurality of transmit RF chains;wherein at least one first directional antenna sub-array is spatially offset relative to at least one other first directional antenna sub-array in a first arrangement; andwherein said at least one first directional antenna sub- ...

Method and apparatus for reference signal configuration of a wireless communication system

A method for reference signal configuration of a wireless communication system is provided. The method includes the following actions. An uplink channel is received by a base station from a user equipment (UE). A frequency offset and a coherence time effected by a phase noise and a Doppler shift are estimated by the base station in response to the uplink channel. A reference signal format is configured by the base station in response to the frequency offset and the coherence time effected by the phase noise and the Doppler shift. A physical uplink shared channel is configured by the UE in response to the reference signal format.

OPTICAL LINK MANAGEMENT

The present disclosure provides optical link management in a marine seismic environment. A first device can transmit, to a second device, a first optical transmission at a first output level. The first optical transmission can include a first packet corresponding to a network protocol. The first device can determine that the second device failed to receive the first packet via the first optical transmission. The first device can transmit, responsive to failure of the first optical transmission, a second optical transmission at a second output level different than the first output level. The second optical transmission can include a second packet corresponding to the network protocol. The first device can identify that the second packet was successfully received by the second link manager agent. The first device can establish, responsive to the identification that the second packet was successfully received, the second output level as a transmission output level for the first device. 123.-. (canceled)24. A system to manage an optical link in free-space to communicate data via an aqueous medium , comprising:a first link manager agent of an underwater vehicle; and one or more sensors to detect acoustic waves;', 'a seismic data recorder to record seismic data corresponding to the acoustic waves detected by the one or more sensors; and', receive, from the first link manager agent of the underwater vehicle, a default optical transmission;', 'transmit to the first link manager agent of the underwater vehicle, a first optical transmission at a first output level, the first optical transmission comprising a first packet corresponding to a network protocol;', 'receive one or more additional default transmissions from the underwater vehicle having a same parameter as the default optical transmission previously received from the underwater vehicle;', 'determine that the first link manager agent failed to receive the first packet via the first optical transmission;', 'transmit a ...

METHOD AND APPARATUS FOR MANAGING ESTIMATION AND CALIBRATION OF NON-IDEALITY OF A PHASE INTERPOLATOR (PI)-BASED CLOCK AND DATA RECOVERY (CDR) CIRCUIT

A method for managing estimation and calibration of non-ideality of a Clock and Data Recovery (CDR) circuit. The method comprises A) selecting a first output path for calibration comprising at least a first Phase Interpolator (PI) of a plurality of PIs, at least one of a plurality of output-side programmable delay elements, an external delay element, at least one sampler, a first and a second external multiplexer, B) programming the output-side programmable delay element using a Digital Delay Control Code (DDCC), C) calibrating the external delay element until a given predetermined criterion based on an early-late detection method is met, D) upon satisfaction of the predetermined criterion, retaining a corresponding Digital External Delay Control Code (DEDCC) in the external delay element for subsequent use, E) selecting a second output path for calibration comprising at least a second PI of the plurality of PIs, the at least one of the plurality of output-side programmable delay elements, external delay element, at least one sampler, the first and second external multiplexers, F) calibrating the output-side programmable delay element until the given predetermined criterion based on the early-late detection method is met, G) upon satisfaction of the predetermined criterion, retaining the corresponding DDCC in the output-side programmable delay element for subsequent use, H) repeating the steps E-G for each of the remaining PIs such that the remaining output-side programmable delay elements are each separately calibrated, I) selecting a first input path for calibration comprising the at least first Phase Interpolator (PI) of the plurality of PIs, at least one of the plurality of input-side programmable delay elements, the external delay element, at least one sampler, the first and second external multiplexers, J) programming the input-side programmable delay element using the Digital Delay Control Code (DDCC), K) calibrating the external delay element until the given ...

Preparing Transmission Signals for Transmission

It is presented a method for determining how to prepare transmission signals for transmission. The method is performed in a transmitter device and comprises the steps of: obtaining an indicator of mutual correlation between signals transmitted from different transmission antennas of the transmitter device; when the indicator indicates mutual correlation less than a threshold value, selecting a first transmission signal operation scheme; and when the indicator indicates a mutual correlation greater than the threshold value, selecting a second transmission signal operation scheme.

METHOD AND APPARATUS FOR REFERENCE SIGNAL CONFIGURATION OF A WIRELESS COMMUNICATION SYSTEM

A method for reference signal configuration of a wireless communication system is provided. The method includes the following actions. An uplink channel is received by a base station from a user equipment (UE). A frequency offset and a coherence time effected by a phase noise and a Doppler shift are estimated by the base station in response to the uplink channel. A reference signal format is configured by the base station in response to the frequency offset and the coherence time effected by the phase noise and the Doppler shift. A physical uplink shared channel is configured by the UE in response to the reference signal format. 1. A method for reference signal configuration of a wireless communication system , comprising:receiving, by a base station, an uplink channel from a user equipment (UE); estimating a channel impulse response in a first band edge and generating a first frequency offset;', 'estimating the channel impulse response in a second band edge and generating a second frequency offset, wherein a frequency of the first band edge is higher than a frequency of the second band edge; and', 'performing a maximum ratio combining and averaging on the first frequency offset and the second frequency offset; and, 'estimating, by the base station, a frequency offset, and a coherence time effected by a phase noise and a Doppler shift in response to the uplink channel, wherein the step of estimating the frequency offset in response to the uplink channel comprisesconfiguring, by the base station, a reference signal format in response to the estimated frequency offset, and the estimated coherence time effected by the phase noise and the Doppler shift.2. The method of claim 1 , further comprising:transmitting, by the base station, a reference signal configuration to the UE in response to the reference signal format;receiving, by the base station, a physical uplink shared channel from the UE; andperforming, by the base station, a channel estimation in response to an ...

Bandwidth adjustment method and bandwidth adjustment controller

A bandwidth adjustment method includes: determining a bandwidth update value of a channel of a first network system and a bandwidth update value of a channel of a second network system and a bandwidth update value of a protective bandwidth according to a request of a user or a channel condition, so that updated bandwidths of the channels of the first network system and the second network system meet the request of the user or are adapted to requirements of channel conditions. By using the technical schemes, a network resource can be adjusted between multiple network systems when the multiple network systems share one network resource, thereby helping improve the application efficiency of a bandwidth resource and ensuring anti-interference capabilities of the network systems.

UPLINK CONTROL INFORMATION SENDING METHOD, UPLINK CONTROL INFORMATION RECEIVING METHOD, APPARATUS, AND SYSTEM

Embodiments of the present invention provide an uplink control information sending method, an uplink control information receiving method, an apparatus, and a system. The method includes: receiving, by a terminal device, channel indication information from an access network device on a physical control channel; determining the channel resource set that is of N channel resource sets and that matches a type or a size of the UCI as a first channel resource set; determining a channel resource that is in the first channel resource set and that is indicated by the channel indication information; and sending uplink control information UCI to the access network device on the channel resource. A quantity of bits that need to be added to the channel indication information in the embodiments of the present invention is less th-n that in the prior art. 1. A method , comprising:receiving, by a terminal device, configuration information from an access network device, wherein the configuration information indicates N channel resource sets, and wherein N is a positive integer greater than or equal to 2;receiving, by the terminal device, channel indication information from the access network device on a physical control channel, wherein the channel indication information indicates a channel resource in a target channel resource set;determining, by the terminal device, a channel resource set of the N channel resource sets as the target channel resource set;determining, by the terminal device, a target channel resource from the channel resource according to a quantity of bits of uplink control information (UCI), wherein a size of the target channel resource is smaller than a size of the channel resource; andsending, by the terminal device, the UCI to the access network device on the target channel resource.2. The method according to claim 1 , further comprising:determining, by the terminal device, the channel resource set of the N channel resource sets as the target channel resource ...

METHOD FOR CONTROLLING TRANSMISSION POWER, AND APPARATUS FOR SAME

A method and communication apparatus for controlling transmission powers in a wireless communication system supporting a plurality of component carriers are described. When a sounding reference symbol (SRS) transmission overlaps with a physical uplink shared channel (PUSCH) transmission and a physical uplink control channel (PUCCH) transmission in a time domain, a check is made as to whether a total of a PUSCH transmission power for the PUSCH transmission on a first component carrier, a PUCCH transmission power for the PUCCH transmission on the first component carrier and a SRS transmission power for the SRS transmission on a second component carrier exceeds a maximum transmission power configured for the communication apparatus. The SRS is dropped if the total of the PUSCH transmission power, the PUCCH transmission power and the SRS transmission power exceeds the maximum transmission power configured for the communication apparatus. 1. A method for controlling transmission powers by a communication apparatus in a wireless communication system supporting a plurality of component carriers , the method comprising:when a sounding reference symbol (SRS) transmission overlaps with a physical uplink shared channel (PUSCH) transmission and a physical uplink control channel (PUCCH) transmission in a time domain, checking whether a total of a PUSCH transmission power for the PUSCH transmission on a first component carrier, a PUCCH transmission power for the PUCCH transmission on the first component carrier and a SRS transmission power for the SRS transmission on a second component carrier exceeds a maximum transmission power configured for the communication apparatus; anddropping the SRS if the total of the PUSCH transmission power, the PUCCH transmission power and the SRS transmission power exceeds the maximum transmission power configured for the communication apparatus.2. The method of claim 1 , further comprising:transmitting the PUCCH and the PUSCH on the first ...

Channel sounding for improved system performance

A transmitter generates and transmits a low rate signal to its intended receiver. Upon receiving the low rate signal, the intended receiver generates and transmits a channel sounding response (CSR), said CSR being a short burst having a predefined transmit format and carrying predetermined information. The transmitter then analyzes the CSR and determines uplink channel response, estimates downlink channel response, and determines appropriate transmit parameter settings based on the analysis and downlink response estimate. Adjustment of the transmit parameters can be made in either the MAC or PHY layer or in a combination of both. After adjusting its transmit parameters and modulating sub-carriers with user-data according to the determined transmit settings, the transmitter transmits the user-data to the receiver on a preferred portion of bandwidth. In a preferred embodiment, the transmitter also generates and transmits a transmit format control (TFC) signal containing the determined transmit parameter settings, including sub-carrier modulation information, to the receiver.

COMMUNICATION APPARATUS AND CONTROL SIGNAL MAPPING METHOD

A communication apparatus includes control circuitry and a transmitter. In operation, the control circuitry selects a Demodulation Reference Signal (DMRS) mapping pattern from among a plurality of DMRS mapping patterns. The DMRS mapping patterns include a first DMRS mapping pattern with first DMRS resource elements to which first DMRSs in a first half of a subframe are mapped and second DMRS resource elements to which second DMRSs in a second half of the subframe are mapped. Also, in operation, the transmitter transmits downlink control information that includes a plurality of bits indicating the selected DMRS mapping pattern. 1. An integrated circuit comprising: receiving candidate information relating to a plurality of mapping patterns of a Demodulation Reference Signal (DMRS) via higher layers and receives downlink control information indicating a mapping pattern of the DMRS from among the plurality of mapping patterns; and', 'determining a plurality of resource elements used for the mapping pattern based on the candidate information and the downlink control information., 'circuitry, which, in operation, controls'}2. The integrated circuit according to claim 1 , wherein a number of the resource elements is different among each of the plurality of mapping patterns.3. The integrated circuit according to claim 1 , wherein a number of resource elements in a first half of a time unit is larger than that in a second half of the time unit for at least one of the plurality of mapping patterns claim 1 , the time unit being configured of 14 Orthogonal Frequency-Division Multiplexing (OFDM) symbols.4. The integrated circuit according to claim 1 , wherein the downlink control information includes a plurality of bits that indicate the mapping pattern from among the plurality of mapping patterns.5. The integrated circuit according to claim 1 , wherein two adjacent Orthogonal Frequency-Division Multiplexing (OFDM) symbols are used for a DMRS transmission for at least one of the ...

COMMUNICATION STATE DETERMINATION METHOD AND COMMUNICATION STATE DETERMINATION DEVICE

Provided is a technique enabling even a person having no advanced expert knowledge on communication to easily confirm consistency between communication events among specified devices and specified specifications. A simple communication log is generated by integrating duplicated events in a communication log (specified communication log LOG) between specified devices -(i=1, 2, - - - N) and extracted from all communication logs between a plurality of devices in a communication environment in accordance with the specified specifications PTC and the simple communication log is output through an output device . Thereby, a worker is able to compare the output simple communication log LOG with the specified specifications PTC and to confirm consistency between both of them more easily. 1. A communication state determination method for determining a communication state between a plurality of specified devices in an environment in which the plurality of devices communicate in accordance with specified specifications , the method comprising:a step of acquiring all communication logs between the plurality of devices and storing the communication logs in a storage device;a step of extracting a communication log between the plurality of specified devices, as a specified communication log, from all the communication logs between the plurality of devices stored in the storage device;a step of generating a simple communication log by integrating duplicated communication events in the specified communication log; anda step of causing an output device to output the simple communication log or both of the specified specifications and the simple communication log.2. The communication state determination method according to claim 1 , wherein the output device is caused to output different parts between the specified specifications and the simple communication log in a manner different from a manner of same parts.3. The communication state determination method according to claim 1 , ...

QUALITY OF SERVICE AND STREAMING ATTRIBUTES FOR A DATA STORAGE DEVICE

A host/device interface coupled between a host and a storage device, and including a data interface and a Quality of Service (QoS) and configured to communicate a QoS signal with the host. The QoS interface cooperates with the data interface to selectively manage a storage QoS on the storage device. A method is provided for storing data on a data medium including receiving a Quality of Service (QoS) command; selecting a portion of the data medium on which to store a data stream; forming a stream chunk from a portion of the data stream; configuring a transducer to store the stream chunk on the data medium in response to the QoS command; and storing the data on the data medium, such that the storing conforms to a QoS command value. 112.-. (canceled)13. A host/device interface , comprising:a data interface communicatively coupled to transfer data between a host and a storage device;a Quality of Service (QoS) interface coupled to the data interface and configured to communicate at least one QoS signal with the host, wherein the QoS interface cooperates with the data interface to selectively manage a storage QoS on the storage device; anda controller operative to configure a first physical storage format attribute, defining an areal density of data storage, wherein in response to receiving a first QoS signal, the host directs the controller to write data having a first areal density to a first location on the storage device, and, in response to receiving a second QoS signal, the host defines a streaming data range on the storage device, wherein in the streaming data range the host directs the controller to write data having a second areal density different than the first areal density.14. The host/device interface of claim 13 , wherein the streaming data range includes a plurality of stream chunks claim 13 , each stream chunk corresponding to a predetermined group of contiguous logic block addresses (LBAs).15. The host/device interface of claim 13 , wherein claim 13 , ...

Waveform adaptation for integrated communications and sensing

Some embodiments of the present disclosure relate to the selection of a waveform for an integrated communications and sensing (ICS) signal, where the waveform is suitable for both communication applications and sensing applications. In view of the sensing applications, the waveform selection can be, at least in part, adapted based on capabilities of hardware of nodes involved in the sensing applications. In view of the communication applications, the waveform selection can be, at least in part, adapted based on the extent to which data is to be embedded.

MOBILE COMMUNICATION BASE STATION AND METHOD FOR ALLOCATING RESOURCES OUTSIDE OF A VIRTUAL CARRIER BASED ON UE CAPABILITIES

A mobile communications network includes one or more network elements providing a wireless access interface for communications devices. The wireless access interface provides plural communications resource elements across a host frequency bandwidth, and includes, within the host frequency bandwidth, first communications resource elements within a first frequency bandwidth for allocation preferably to reduced capability devices to receive signals representing the data transmitted by the transmitter unit within the first bandwidth forming a first virtual carrier, the reduced capability devices each having a receiver bandwidth which is greater than or equal to the first frequency bandwidth but less than the host frequency bandwidth. Communications devices of different capabilities can be allocated communications resources within different frequency ranges according to their capability, which can relieve congestion on a centre frequency of communications resources in which communications devices with a minimum bandwidth capability must receive communications resources for receiving down link signals. 120-. (canceled)21. A communication device , comprising:a transmitter configured to transmit data via a wireless access interface provided by a mobile access network; anda receiver configured to receive data via the wireless access interface, whereinthe wireless access interface provides a plurality of communications resource elements across a host frequency bandwidth and includes, within the host frequency bandwidth, a first section of communications resource elements within a first frequency bandwidth for allocation to reduced capability devices to receive signals within the first bandwidth, the reduced capability devices each having a receiver bandwidth which is greater than or equal to the first frequency bandwidth but less than the host frequency bandwidth,the transmitter is further configured to transmit a relative capability of the receiver to receive signals ...

Bandwidth Adjustment For Real-time Video Transmission

A method for bandwidth adjustment for real-time video transmission is disclosed herein. The method comprises transmitting, by a sender, a first portion of the video bitstream encoded using a current bitrate and transmitted as a series of data packets, receiving, by the sender, a back channel message from the receiver, wherein the back channel message comprises receiver-side bandwidth parameters determined by the receiver in response to receiving the series of data packets, determining, by the sender, round trip delay data based on a sender-side time stamp difference of sending and receiving of the series of data packets, adjusting, by the sender using the processor, the current bitrate for encoding the video bitstream based on the receiver-side bandwidth indicators and the roundtrip delay data, and transmitting, to the receiver, a second portion of the video bitstream encoded using the adjusted current bitrate.

Communication apparatus and control signal mapping method

A communication apparatus includes control circuitry and a transmitter. In operation, the control circuitry selects a Demodulation Reference Signal (DMRS) mapping pattern from among a plurality of DMRS mapping patterns. The DMRS mapping patterns include a first DMRS mapping pattern with first DMRS resource elements to which first DMRSs in a first half of a subframe are mapped and second DMRS resource elements to which second DMRSs in a second half of the subframe are mapped. Also, in operation, the transmitter transmits downlink control information that includes a plurality of bits indicating the selected DMRS mapping pattern.

Hitless Modulation Changes in Double Capacity Links Using Adaptive Coding Modulation (ACM)

An outdoor communication unit (ODU) for implementation within a dual channel microwave backhaul system, is provided. The ODU includes an radio frequency (RF) module, having digital capabilities, which is configured to utilize the digital capabilities to perform adaptive adjustments to correct errors in data in a digital domain, a conversion block configured to convert the data between an analog domain and the digital domain, and a processing module configured to adaptively adjust a characteristic of the data and a characteristic of a dual channel wireless link, and to facilitate a transmission of the data over the dual channel wireless link by performing mathematical manipulation techniques. In particular, the characteristic of the data and of the dual channel wireless link are adaptively adjusted, according to a detected condition, using a hitless adaptive coding modulation (ACM) technique to optimize the transmission of the data over the dual channel wireless link

Dynamic Coverage Mode Switching and Communication Bandwidth Adjustment

This disclosure relates to techniques for dynamically changing coverage modes and/or communication bandwidth in a wireless communication system. According to some embodiments, a wireless device may attach to a serving cell associated with a cellular network. A volume of data for upcoming communication with the cellular network may be determined. An indication of a requested communication bandwidth may be provided to the serving cell. The wireless device may communicate data with the serving cell using the requested communication bandwidth. In some instances, a request for narrowband communication bandwidth may result in use of a coverage enhancement mode, while a request for wideband communication bandwidth may result in use of a normal coverage mode. 1. An apparatus , comprising: attach to a serving cell associated with a cellular network;', {'b': 1', '4, 'determine a preferred first uplink communication bandwidth mode from a plurality of uplink communication bandwidth modes, wherein the preferred first uplink communication bandwidth mode comprises a first maximum uplink bandwidth for a physical uplink shared channel (PUSCH) to the serving cell, wherein at least one of the plurality of uplink communication bandwidth modes comprises a maximum uplink communication bandwidth of .MHz;'}, {'b': 1', '4, 'determine a preferred first downlink communication bandwidth mode from a plurality of downlink communication bandwidth modes, wherein the preferred first downlink communication bandwidth mode comprises a first maximum downlink bandwidth for a physical downlink shared channel (PDSCH) to the serving cell, wherein at least one of the plurality of possible downlink communication bandwidth modes comprises a maximum downlink communication bandwidth of .MHz;'}, 'transmit a radio resource control (RRC) message to the serving cell, wherein the RRC message comprises a first indication of the preferred first uplink communication bandwidth mode and a second indication of the ...

Method and Apparatus for Communication Link Adaptation for Interference-Canceling Receivers

Network-side and device-side methods and apparatuses improve transmit link adaptation for devices operating in a cellular network that have interference-canceling receivers. Own-cell link adaptation towards a device in a current transmission interval exploits a determined mapping between the interfering-signal cancelation efficiency of the device versus the interfering-signal transport format, in combination with actual knowledge of the transport format that will be used to make an interfering neighbor-cell transmission in the current transmission interval. For example, a serving radio node uses the known transport format of the interfering transmission, to accurately determine the expected cancellation efficiency for the device with respect to the interfering transmission, and uses the expected cancellation efficiency to obtain a more accurate estimate of the own-cell channel quality expected for the device in the current transmission interval. Link adaptation towards the device in the current transmission interval uses this more accurate estimate of own-cell channel quality.

Transmit parameter control

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may transmit, and a user equipment (UE) may receive, a group-common downlink control information (DCI) message, wherein the group-common DCI message includes information identifying at least one communication parameter for a plurality of UEs. The BS and the UE may communicate in accordance with the at least one communication parameter based at least in part on the BS transmitting the group-common DCI message to the plurality of UEs and the UE receiving the group-common DCI message. Numerous other aspects are provided.

Communication Coexistence in Overlap Spectrum

Communication in a first spectrum and via a first transmission line of first data is according to a time-division duplexing scheme such as G.fast. Communication in a second spectrum and via a second transmission line of second data is according to a frequency-division duplexing scheme such as VDSL2. The first and second spectra both comprise an overlap spectrum. The first transmission line experiences first crosstalk from the second transmission line and the second transmission line experiences second crosstalk from the first transmission line. 1. A method , comprising:{'b': '121', 'communicating, in a first spectrum () and via a first transmission line, first data according to a time-division duplexing scheme,'}communicating, in a second spectrum and via a second transmission line, second data according to a frequency-division duplexing scheme,wherein the first spectrum and second spectrum both comprise an overlap spectrum,wherein the first transmission line experiences first crosstalk from the second transmission line,wherein the second transmission line experiences second crosstalk from the first transmission line.2. The method of claim 1 , further comprising:determining a value indicative of the noise level associated with the first transmission line, said value indicative of the noise level associated with the first transmission line comprising at least the first crosstalk,for said communicating of the first data: using dynamic spectrum management of the first spectrum depending on the value indicative of the noise level associated with the first transmission line.3. The method of claim 2 ,wherein the first data is communicated employing a plurality of carriers arranged in the first spectrum, 'for each one of the plurality of carriers: depending on the determined value indicative of the noise level associated with the first transmission line, selecting a respective number of allocated bits of said communicating of the first data.', 'wherein said using of the ...

Communication device for mounting to infrastructure

A communication device for mounting to an infrastructure, the communication device being configured for communication with a remote communication device via a directive antenna main lobe, the communication device comprising a sensor module configured to measure a movement of the communication device relative to a reference orientation.

Method of transmitting feedback message in wireless communication system

A method of transmitting a feedback message in wireless communication system is provided. The method includes selecting N best subbands of M subbands according to CQI, where both M and N are a natural number and M is larger than N, generating multiple input multiple output (MIMO) information comprising N codebook indexes and N differential CQIs and transmitting the feedback message comprising the MIMO information.

INTEGRATED CIRCUIT

To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing overhead of retransmission control signaling. Where a retransmission control method is employed with adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>⅔, two bits are set. In a case where the encoding rate ⅓ Подробнее

Method and arrangement in a wireless communications system

A method for assisting the adaptation of a signal from a first node to a second node is provided. The first node communicates with the second node in a wireless communication system over a radio link. The second node has a codebook comprising a set of possible information alternatives for assisting the adaptation of a signal received from the first node. The second node may select an information alternative from the codebook and send it to the first node to assist the first node in adapting the signal. The first node is configured with a number of subsets, each comprising a part of the possible information alternatives. The first node requests that the second node restrict the selection of information alternatives to one of the subsets, and in response, receives an information alternative from the second node that is selected from among the subsets configured according to the configuration request. 1sending a message to the second node comprising a configuration request to the second node to restrict the selection of information alternatives by the second node to at least one subset of the set of possible information alternatives, each subset comprising at least a part of the codebook; andreceiving an information alternative from the second node, which information alternative is selected from among the at least one subset configured according to the configuration request.. A method in a first node for adapting a signal to be sent over a radio link from the first node to a second node in a wireless communication system, wherein the second node is configured to use a codebook comprising a set of possible information alternatives for use by the first node in adapting the signal, said method comprising: This application is a continuation of U.S. application Ser. No. 15/359,711, filed on Nov. 23, 2016, which is a continuation of U.S. application Ser. No. 14/728,119, filed on Jun. 2, 2015 and is issued as U.S. Pat. No. 9,531,464, which is a continuation of U.S. ...

System and method for optical system margin allocation

A system and method for generating, based on optical network topology information, an optical model to represent an optical network; provisioning a new optical connection within the optical network: determining, using the optical model, a first bit error rate (BER) of the new optical connection; determining, using the optical network providing the new optical connection, a second BER of the new optical connection; determining, based on the first and the second BER, a BER excursion parameter of the new optical connection; training a margin allocator based on the BER excursion parameter of the new optical connection, and the first BER of the new optical connection; comparing the first BER of the new connection and a required optical margin to a threshold to determine a reliability of the new optical connection; and allocating, using the margin allocator, the required optical margin for additional optical connections of the optical network.

ERROR CONTROL METHOD, MEDIUM ACCESS CONTROL (MAC) FRAME DESIGNING METHOD, AND TERMINAL REGISTRATION METHOD IN WIRELESS COMMUNICATION SYSTEM AND RECORDING MEDIUM

The MAC frame in a wireless communication system includes a terminal ID allocated to each of multiple terminals. At least one connection ID is allocated to each terminal having the terminal ID, and sub-carrier allocation information is allocated to each connection having the connection ID. The sub-carrier allocation information includes a sub-carrier allocation status for each sub-carrier, and the number of allocated information bits for each sub-carrier. The sub-carrier allocation status and the number of allocated information bits for each sub-carrier can be allocated, by sub-carriers, to the sub-carrier allocation information using a same number of bits; or the information on the sub-carrier allocation status is first allocated to the sub-carrier allocation information and the number of allocated information bits for each sub-carrier is allocated. 19-. (canceled)10. A method of receiving by a receiving apparatus a subframe from a transmitter in a wireless communication system , the method comprising:receiving a first signal comprising a part of the subframe from the transmitter, the first signal comprising first information and second information;detecting an identifier associated with the receiving apparatus based on the first signal and the information; andreceiving data in the subframe based on the identifier,wherein the first information indicates a location in the subframe of radio resources allocated to the receiving apparatus, and the second information indicates a number of bits allocated to the radio resources. This application is a continuation of U.S. patent application Ser. No. 13/369,610 filed Feb. 9, 2012 (now pending), which is a continuation application of U.S. patent application Ser. No. 12/214,180 filed Jun. 16, 2008, (now U.S. Pat. No. 8,139,532), which is a divisional application of U.S. patent application Ser. No. 10/695,135 filed Oct. 27, 2003, (now U.S. Pat. No. 7,391,774), which claims priority to Korea Patent Appl. No. 10-2002-0080317 ...

QUALITY OF SERVICE AND STREAMING ATTRIBUTES FOR A DATA STORAGE DEVICE

A host/device interface coupled between a host and a storage device, and including a data interface and a Quality of Service (QoS) and configured to communicate a QoS signal with the host. The QoS interface cooperates with the data interface to selectively manage a storage QoS on the storage device. A method is provided for storing data on a data medium including receiving a Quality of Service (QoS) command; selecting a portion of the data medium on which to store a data stream; forming a stream chunk from a portion of the data stream; configuring a transducer to store the stream chunk on the data medium in response to the QoS command; and storing the data on the data medium, such that the storing conforms to a QoS command value. 112.-. (canceled)13. A method for storing data on a storage device , comprising:providing a storage system comprising a data interface communicatively coupled to transfer data between a host and a storage device, a Quality of Service (QoS) interface coupled to the data interface and configured to communicate at least one QoS signal with the host, wherein the QoS interface cooperates with the data interface to selectively manage a storage QoS on the storage device, and a controller operative to configure a first physical storage format attribute, defining an areal density of data storage;receiving, at said host, a first QoS signal;responsive to said receiving, directing the controller to write data having a first areal density to a first location on the storage device;receiving, at said host, a second QoS signal; andoperating the host to define a streaming data range on the storage device, wherein, the streaming data range, the host directs the controller to write data having a second areal density different than the first areal density, wherein, for a data stream, said controller forms a stream chunk from a portion of the data stream and stores the stream chunk in the streaming data range.141. The method of claim , wherein the streaming ...

METHODS FOR ANALYZING AND OPTIMIZING THE PERFORMANCE OF A DATA COLLECTION NETWORK ON AN ELECTRICAL DISTRIBUTION GRID

A system and methods for optimizing the performance of communication network utilizing an electrical distribution grid are disclosed. Optimization methods may include archiving historical message data and metrics from transmissions by Remote Hubs received on one or more Substation-to-Edge channels. Trends in the archived metrics over time are later analyzed to determine which combination of transmission variables such as frequency band, modulation method, drive voltage, and transmission time produce the highest message success rates overall. The results of such analysis may be used to provide feedback to the Remote Hubs or reveal necessary repairs to the network. Optimization may also be carried out locally by an individual Remote Hub by estimating the impedance of the transmission medium and adjusting either drive voltage or transmission band. 1. A method for optimizing performance of Edge-to-Substation channels in a communication network utilizing an electrical distribution grid , the method comprising:a. retrieving archived data about the history of at least one Edge-to-Substation channel;b. analyzing metrics on the archived data relating to the performance of the at least one Edge-to-Substation channel over time; andc. identifying potential improvements to network performance on the channel.2. The method of claim 1 , wherein said metrics include at least one of the ratio of energy per bit to noise power spectral density claim 1 , message detection rate claim 1 , bit error rate claim 1 , impedance variation claim 1 , crosstalk claim 1 , Gaussian and impulse noise claim 1 , symbol constellation separation claim 1 , inter-symbol interference claim 1 , receive time drift claim 1 , or drift in modulation frequencies.3. The method of claim 1 , wherein said analysis includes comparing the historical performance of a plurality of alternative frequency bands.4. The method of claim 1 , wherein the improvements to network performance comprise a policy change on at least ...

Adjustable transmitter power for high speed links with constant bit error rate

A method and apparatus for dynamically adjusting power of a transmitter is herein described. A transmitter transmits a pattern to a receiver at a differential voltage. The length of the pattern, in one embodiment, is selected to be a reasonable length training pattern, as not to incur an extremely long training phase. If errors are detected at the receiver in the pattern, the transmitter steps the differential voltage until errors are not detected in the pattern at the receiver. The differential voltage, where no errors are detected, is scaled by a proportion of a target confidence level to a measured confidence level associated with the reasonable length training pattern. As a result, a training phase is potentially reduced and power is saved while not sacrificing confidence levels in error rates in the data exchange between the transmitter and receiver.

System and Method for Developing Applications in Wireless and Wireline Environments

An intelligent messaging network provides multiple software development kits (SDKs) to assist, e.g., engineers in developing client and server applications. The SDKs can contain a consistent set of application program interfaces (APIs) and a set of platform specific libraries for all intelligent messaging network supported platforms and networks. In addition to the SDKs, the intelligent messaging network can provide developers a resource kit including a set of tools to assist the developers when designing, implementing, and testing their client and server applications. The intelligent messaging network can provide a mobile client and server SDK environment to assist engineers developing client applications and servers. The SDKs can provide an easy to use APIs and a set of platform specific libraries to perform, e.g., compression, network management services, server-to-server communication, server registration/de-registration, and reliable message transport services. 149-. (canceled)50. A method for supporting a communications network including a plurality of protocols , comprising:receiving, at a physical messaging network server initiated from a physical wireless device, a communication utilizing a modified User Datagram Protocol (UDP) connectionless transport protocol modified to detect a duplicate segmented message;detecting, at said physical messaging network server, said duplicate segmented message using a peer wireless protocol;acknowledging back to a peer wireless protocol layer of said physical wireless device, said duplicate segmented message;discarding, using said modified UDP connectionless transport protocol, said duplicate segmented message; andlogging said duplicate segmented message;wherein said modified UDP connectionless transport protocol requires fewer overhead bytes than is required by Transport Control Protocol (TCP) protocol.51. The method for supporting a communications network including a plurality of protocols according to claim 50 , further ...

METHOD FOR ADAPTING A LINK FOR SELECTING A FRAME TRANSMISSION MODE AND CORRESPONDING WI-FI ACCESS POINT

A link adaptation method uses a selection criterion for selecting a transmission mode for transmitting PPDU frames over a channel of a telecommunications system. The system includes an access point and a plurality of stations having various different transmission modes associated with different data rates. Access to the channel being of the random type. The selection makes use of a time occupancy metric γ of the channel. 2. The link adaptation method according to claim 1 , wherein the time determination for determining the mean access time to the channel tis performed from a transmission mean data rate.4. The link adaptation method according to comprising:comparing a threshold value with the values of the metric γ as determined for different transmission modes in order to preselect modes; andselecting in compliance with a determined criterion of one mode from among the various preselected modes.5. The link adaptation method according to claim 1 , wherein occupancy of the channel is measured over a determined observation window and makes use of a Poisson distribution model for the arrival rates of the PPDU frames to be transmitted claim 1 , the variance λ of the Poisson distribution corresponding to the mean frequency of arrival of the PPDU frames.6. The link adaptation method according to claim 1 , wherein the various transmission modes are classified by groups of equivalent data rates D claim 1 , and for a group claim 1 , the method comprises:{'u': {'@style': 'single', 'd'}, 'determining the value of a first metric α for a given transmission mode, which metric measures relative degradation of the communication signal at a given distance as introduced by the transmission medium for a given environment relative to a reference model of the transmission medium, resulting from a multi-path effect and/or an attenuation effect of the transmission medium; and'}{'sub': 'i', 'comparing values of the first metric α for different modes for selection with at least one ...

COMMUNICATION APPARATUS AND COMMUNICATION METHOD

A MS transmits, to a BS, uplink data (UD) on a PUSCH, PUSCH being assigned by using a PDCCH. The MS receives on PDCCH, an indication instructing the MS to transmit reception quality information (RQI) without UD on PUSCH, and transmits on PUSCH, to the BS, RQI without UD based on the indication which is received on PDCCH. The indication is specified based on values to which a plurality of fields of information transmitted on PDCCH are set. One of the plurality of fields is a field used for instructing the MS to transmit RQI and another is a field used for indicating a redundancy version. For instructing the MS to transmit RQI without UD on PUSCH, the field used for instructing the MS to transmit RQI is set to a first single predetermined value (SPV) and the field used for indicating the redundancy version is set to a second SPV. 1. A base station apparatus which assigns , to a mobile station apparatus , a physical uplink shared channel by using a physical downlink control channel , the physical uplink shared channel being used for transmitting uplink data , the base station apparatus comprising:transmitting circuitry configured to transmit on the physical downlink control channel, to the mobile station apparatus, a first indication instructing the mobile station apparatus to transmit reception quality information with the uplink data on the physical uplink shared channel assigned by using the physical downlink control channel,the transmitting circuitry configured to transmit on the physical downlink control channel, to the mobile station apparatus, a second indication instructing the mobile station apparatus to transmit the reception quality information without the uplink data on the physical uplink shared channel assigned by using the physical downlink control channel; andreceiving circuitry configured to receive on the physical uplink shared channel, from the mobile station apparatus, the reception quality information with the uplink data in a case that the first ...

Sidelink link adaptation feedback

The described techniques may allow transmitting devices to adjust transmission parameters (e.g., transmit power, modulation and coding scheme (MCS)), until reaching an optimal power and/or MCS. These techniques may allow devices to use power efficiently and reduce inter-device interference in a vehicle-to-everything sidelink system. For example, a transmitting device may begin transmissions to a receiving device with initial transmission parameters, which may be configured using a transmission priority and a channel busy ratio. The transmitting device may lower power and/or increase MCS in each of its subsequent transmissions of the same priority, until the receiving device transmits a feedback message that indicates a low signal quality or a failure to decode a previous transmission. The transmitting device may then increase its transmit power and/or decrease its MCS to an acceptable level for a specified time duration based on receiving the feedback message.

Methods and Apparatus for Encoding and Decoding a Downlink Control Channel Transmission

Methods and apparatus for encoding and decoding a downlink control channel transmission, such as but not exclusively a High Speed Signalling Control Channel, HS-SCCH, transmission, in a wireless communications network. A method in a network node for encoding a downlink control channel transmission, comprises determining that channel conditions are below a threshold level, and in response to determining that channel conditions are below the threshold level, performing at least one of: encoding one or more predetermined control information bits into the downlink control channel transmission, and encoding a reduced number of control information bits into the downlink control channel transmission by omitting one or more control information bits, wherein the one or more omitted control information bits are predetermined control information bits. The method further comprises transmitting the downlink control channel transmission to a user equipment. A method in a user equipment for decoding a downlink control channel transmission, comprises receiving the downlink control channel transmission, and decoding the downlink control channel transmission based on knowledge of the predetermined control information bits.

COMMUNICATION COEXISTENCE IN OVERLAP SPECTRUM

Communication in a first spectrum and via a first transmission line of first data is according to a time-division duplexing scheme such as G.fast. Communication in a second spectrum and via a second transmission line of second data is according to a frequency-division duplexing scheme such as VDSL2. The first and second spectra both comprise an overlap spectrum. The first transmission line experiences first crosstalk from the second transmission line and the second transmission line experiences second crosstalk from the first transmission line. 1. A method , comprising:{'b': '121', 'communicating, in a first spectrum () and via a first transmission line, first data according to a time-division duplexing scheme,'}communicating, in a second spectrum and via a second transmission line, second data according to a frequency-division duplexing scheme,wherein the first spectrum and second spectrum both comprise an overlap spectrum,wherein the first transmission line experiences first crosstalk from the second transmission line,wherein the second transmission line experiences second crosstalk from the first transmission line.2. The method of claim 1 , further comprising:determining a value indicative of the noise level associated with the first transmission line, said value indicative of the noise level associated with the first transmission line comprising at least the first crosstalk,for said communicating of the first data: using dynamic spectrum management of the first spectrum depending on the value indicative of the noise level associated with the first transmission line.3. The method of claim 2 ,wherein the first data is communicated employing a plurality of carriers arranged in the first spectrum, 'for each one of the plurality of carriers: depending on the determined value indicative of the noise level associated with the first transmission line, selecting a respective number of allocated bits of said communicating of the first data.', 'wherein said using of the ...

Communication coexistence in overlap spectrum

Communication in a first spectrum and via a first transmission line of first data is according to a time-division duplexing scheme such as G.fast. Communication in a second spectrum and via a second transmission line of second data is according to a frequency-division duplexing scheme such as VDSL2. The first and second spectra both comprise an overlap spectrum. The first transmission line experiences first crosstalk from the second transmission line and the second transmission line experiences second crosstalk from the first transmission line.

METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING HE RA SU PPDU IN A WLAN

A method for transmitting data by a first station (STA) in a wireless local area network (WLAN) system is disclosed. The method includes configuring, as a radio frame for transmission of the data, a high efficiency extended range single user physical protocol data unit (HE ER SU PPDU) in which a high efficiency signal A (HE-SIG-A) field is repeated, and transmitting the configured HE ER SU PPDU to a second STA in a resource unit (RU) of one of a first type and a second type, the first type having a size of 106 tones and the second type having a size of 242 tones. If the HE ER SU PPDU is transmitted in an RU of the first type, the HE ER SU PPDU is transmitted in an RU of the first type at a fixed position in a primary 20-MHz channel. 1. A method for a non-AP (Access Point) STA (station) transmitting a radio frame to an AP STA in a wireless local area network (WLAN) system , the method comprising:configuring the radio frame comprising a bandwidth field in a format from among a high efficiency extended range single user physical protocol data unit (HE ER SU PPDU), a HE single user (SU) PPDU, or a HE trigger-based PPDU; andtransmitting the radio frame to the AP STA in a resource unit (RU) of one of 26-tone unit, 52-tone unit, 106-tone unit, or 242-tone unit within 20 MHz band,wherein, based on the format being the HE ER SU PPDU, only the RU of the 106-tone unit or the 242-tone unit is used, and the bandwidth field of the HE ER SU PPDU is set for one of the 106-tone unit or the 242-tone unit, andwherein, based on the format being the HE SU PPDU or the HE trigger-based PPDU, the RU of each of the 26-tone unit, the 52-tone unit, the 106-tone unit or the 242-tone unit is used.2. The method of claim 1 , wherein claim 1 , based on the format being the HE ER SU PPDU claim 1 , the 106-tone unit located in a predetermined fixed one position among two possible positions within a primary 20 MHz is used.3. The method of claim 2 , wherein the bandwidth field of the HE ER SU PPDU is ...

METHOD FOR TRANSMITTING REFERENCE SIGNAL AND DEVICE THEREFOR IN WIRELESS COMMUNICATION SYSTEM

The present invention discloses a method for transmitting a reference signal and a device therefor in a wireless communication system. In particular, the method maps and transmits a DMRS signal to at least one OFDM symbol in a resource region for uplink data, and in the at least one OFDM symbol, a resource element to which the DMRS signal has not been mapped cannot be used for the uplink data. 1. A method of operating by a user equipment (UE) in a wireless communication system that includes a base station (BS) , the method comprising:receiving, by the UE from the BS, information related to a demodulation reference signal (DMRS) resource of an orthogonal frequency division multiplexing (OFDM) symbol,wherein the received information informs the UE whether or not a first resource element group of the DMRS resource is to be used for transmitting data to the BS;transmitting, by the UE to the BS, a DMRS via a second resource element group of the DMRS resource,wherein the first resource element group is different than the second resource element group, andwherein, based on the received information, the transmitting the DMRS comprises transmitting data in the first resource element group or not transmitting data in the first resource element group.2. The method of claim 1 , wherein the received information further informs the UE of the second resource element group of the DMRS resource that is to be used for transmitting the DMRS to the BS.3. The method of claim 1 , wherein the received information relates to DMRS transmissions via cyclic prefix—OFDM (CP-OFDM) or a Discrete Fourier Transform (DFT) spread OFDM.4. The method of claim 3 , wherein a DMRS mapping pattern based on the DFT-S-OFDM and a DMRS mapping pattern based on the CP-OFDM are same.5. The method of claim 3 , wherein a DMRS sequence based on the DFT-S-OFDM and a DMRS sequence based on the CP-OFDM are generated based on different type of sequences.6. The method of claim 1 , wherein the first and second resource ...

MOBILE COMMUNICATION DEVICE AND METHOD FOR ALLOCATING SYSTEM INFORMATION AMONG VIRTUAL CARRIERS FOR MACHINE-TYPE COMMUNICATIONS

A communications device transmitting/receiving signals to/from a mobile communications network includes one or more network elements providing a wireless access interface for the communications device. The wireless access interface includes plural communications resource elements across a host frequency range of a host carrier, and a first section of the communications resources within a first frequency range for preferable allocation to reduced capability devices forming a first reduced bandwidth carrier and a second section of the communications resources within a second frequency range for preferable allocation to the reduced capability devices forming a second reduced bandwidth carrier. Each of the first and second frequency ranges is within the host frequency range. The communications device is configured with a reduced capability to receive the signals only within a frequency bandwidth less than the host frequency range and equal to at least one of the first frequency range or the second frequency range. 1. An infrastructure equipment for transmitting or receiving data to a mobile communications network , the infrastructure equipment providing a wireless access interface for a communications device , the infrastructure equipment comprising:circuitry configured toreceive signals representing the data; andtransmit signals representing the data, wherein the wireless access interface provides a plurality of communications resource elements across a host frequency range of a host carrier, and provides a first section of the communications resources within a first frequency range for preferable allocation to reduced capability devices forming a first virtual carrier and a second section of the communications resources within a second frequency range for preferable allocation to the reduced capability devices forming a second virtual carrier, each of the first frequency range and the second frequency range being within the host frequency range, wherein a receiver of ...

Outer-loop control in wireless communication link adaptation

A method and base station for outerloop adjustment for link adaptation of a physical downlink control channel, PDCCH, in a communication network to determine a control channel element, CCE, aggregation level of a downlink assignment downlink control information, DCI, and a CCE aggregation level of an uplink grant DCI is provided. A downlink data packet feedback corresponding to the downlink assignment is received. A status of the downlink data packet feedback is determined. An uplink data packet corresponding to the uplink grant is received and a status thereof is determined. An outerloop downlink adjustment and outerloop uplink adjustment are updated based on at least one of the status of the downlink data packet feedback corresponding to the downlink assignment and status of the uplink data packet corresponding to the uplink grant. An outerloop uplink adjustment is determined as a sum of the outerloop downlink adjustment and an offset adjustment.

APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING INFORMATION RELATED TO MULTIMEDIA DATA IN A HYBRID NETWORK AND STRUCTURE THEREOF

An apparatus and method for transmitting and receiving information related to multimedia data in a hybrid network and a structure thereof are provided. The transmission method includes generating transmission characteristic information about the media data, and transmitting the transmission characteristic information. The transmission characteristic information includes valid range information about the transmission characteristic information. 1. A method for receiving a packet at a moving picture experts group media transport (MMT) , receiving entity , the method comprising:receiving a packet comprising a header and a payload, the packet including asset delivery characteristic, ADC, message, the ADC message including information for ADC; anddecoding the packet;wherein the ADC message comprises ADC level flag information indicating whether the information for ADC included in the ADC message is information for an asset,wherein the ADC message comprises type information used to distinguish an asset from another, andwherein the ADC message comprises quality of Service, QoS, related information.2. The method of claim 1 , wherein the information for ADC includes validity start time information indicating a time when the ADC message starts to be valid.3. The method of claim 1 , wherein the information for ADC includes validity duration information indicating a validity duration of the ADC message from the time indicated by validity start time information.4. The method of claim 1 , wherein the QoS related information comprises at least one of loss related information claim 1 , jitter level information claim 1 , or service class information.5. The method of claim 1 ,wherein, if the ADC level flag information is set to a first value, the information on the ADC included in the ADC message is the information for the asset, andwherein, if the ADC level flag information is set to a second value, the information on the ADC included in the ADC message is the information for a ...

Method and Apparatus for Controlling Data Retransmission in Multiuser MIMO System

Embodiments of the present disclosure provide methods, apparatus and computer readable storage medium for controlling data retransmission in a multi-user system. A method comprises determining whether data transferred by any of multiple users are received unsuccessfully. The multiple users share a same resource in a feedback channel, for carrying feedback information of whether or not data transferred by respective users are received successfully. When data transferred by any of the multiple users are received unsuccessfully, the method also comprises causing data retransmission in a first retransmission mode or a second retransmission mode. In the first retransmission mode, positive feedback is sent via the same resource to the multiple users, and adaptive retransmission is triggered for the users whose data are received unsuccessfully. In the second retransmission mode, negative feedback is sent via the same resource to the multiple users, so that non-adaptive retransmission is triggered for the multiple users. 1400100400. A method () for controlling data retransmission in a multi-user system () , the method () comprising:{'b': 410', '103', '105', '107', '103', '105', '107, 'determining () whether data transferred by any of multiple users (, , ) are received unsuccessfully, wherein the multiple users (, , ) share a same resource in a feedback channel for carrying feedback information of whether or not data transferred by respective users are received successfully; and'}{'b': 103', '105', '107', '420, 'when data transferred by any of the multiple users (, , ) are received unsuccessfully, causing () data retransmission in a first retransmission mode or a second retransmission mode,'}{'b': 103', '105', '107, 'wherein in the first retransmission mode, positive feedback is sent via the same resource to the multiple users (, , ), and adaptive retransmission is triggered for the users whose data are received unsuccessfully, and'}{'b': 103', '105', '107', '103', '105', ' ...

BASE STATION, TERMINAL APPARATUS, COMMUNICATION CONTROL METHOD AND RADIO COMMUNICATION SYSTEM

To adaptively interleave in accordance with communication channel conditions. Provided is a base station performing radio communication with a terminal apparatus on a communication channel formed by integrating a plurality of component carriers, including a quality acquisition unit that acquires channel quality of the communication channel for each of the component carriers and an interleaver that interleaves data signals transmitted on the communication channel in accordance with at least one of the channel quality acquired by the quality acquisition unit and available situations of communication resources for each of the component carriers. 1. A user equipment that performs radio communication with a base station on at least a downlink communication channel including a plurality of component carriers , the user equipment comprising: receive control information from the base station, the control information including information regarding mapping between each of the plurality of component carriers and one of a plurality of classes according to a service quality of a data signal; and', 'receive the data signal on the downlink communication channel, the data signal having been classified to the class according to the service quality and assigned to at least one component carrier of the plurality of component carriers based on the class of the data signal, wherein, 'circuitry configured to'}the downlink communication channel is formed by aggregating a plurality of frequency bands, each of the plurality of frequency bands being a component carrier.2. The user equipment according to claim 1 , wherein the plurality of classes include a Conversational Class.3. The user equipment according to claim 1 , wherein the service quality includes Transfer delay.4. The user equipment according to claim 1 , wherein the service quality includes Error rate and/or Guaranteed bit rate.5. A base station that performs radio communication with a user equipment on a communication channel ...

Channel Quality Indicator Adjustment to Account for Network-Assisted Interference Cancellation

Techniques for adjusting channel quality reports to reflect interference cancellation at a mobile terminal are disclosed. An example embodiment is a method, in a node of a wireless network, for adjusting channel quality reports received from a mobile terminal to account for interference cancellation performed by the mobile terminal. According to this example method, a channel quality report for a serving cell is received from the mobile terminal. Further, one or more mobility measurement reports for the serving cell and at least one interfering cell are received from the mobile terminal. The channel quality report is then adjusted, based on the one or more mobility measurement reports. The resulting adjusted channel quality report may be used for any of several purposes, including, for example, to scheduling for the mobile terminal and adapting of modulation and coding schemes for the mobile terminal. 129-. (canceled)30. A method , in a node of a wireless network , for adjusting channel quality reports received from a mobile terminal to account for interference cancellation performed by the mobile terminal , the method comprising:receiving a channel quality report for a serving cell from the mobile terminal;receiving one or more mobility measurement reports for the serving cell and at least one interfering cell from the mobile terminal; andadjusting the channel quality report, based on the one or more mobility measurement reports.31. The method of claim 30 , wherein the one or more mobility measurement reports are indicative of a received power of the desired signal and a received power for an interfering signal.32. The method of claim 31 , wherein adjusting the channel quality report is based on an estimate of a ratio between the received power of the interfering signal and the received power of the desired signal.33. The method of claim 30 , wherein the channel quality report indicates a signal-to-interference-plus-noise ratio (SINR) for a desired signal at the ...

Arrangement for Connecting a Component to a Master Controller in a Motor Vehicle

An arrangement for a motor vehicle includes a master controller and a slave controller that use different reference-earth voltages and respectively comprise a transmission and a reception unit for shared data interchange. The transmission and reception units are connected to one another via a shared communication line. The communication line contains a diode that prevents a flow of current from the slave controller to the master controller. The master controller contains a pull-up resistor via which the shared communication line can be connected to a first reference-earth potential of the reference-earth voltage of the master controller.

TERMINAL DEVICE, BASE STATION DEVICE, INTEGRATED CIRCUIT, AND RADIO COMMUNICATION METHOD

A terminal apparatus which performs periodic channel state information reporting to a base station apparatus, the terminal apparatus including a reception unit that receives first information, second information, and index information indicating a value for reporting periodicity of the channel state information, from the base station apparatus, and a transmission control unit that determines the value for reporting periodicity of the channel state information on the basis of the index information, in which the applicable value is based on a certain UL-DL configuration, in which, in a case where the second information is not configured, the certain UL-DL configuration is a UL-DL configuration indicated by the first information, and in which, in a case where the second information is configured, the certain UL-DL configuration is a UL-DL configuration indicated by the second information. Consequently, in a radio communication system which employs dynamic TDD, interference with a downlink signal is avoided, and an uplink control signal is transmitted. 1. A terminal apparatus comprising:a receiver configured to and/or programmed to receive first information, second information, and index information indicating a periodicity value for the channel state information reporting, from the base station apparatus; anda transmission control circuit configured to and/or programmed to perform periodic channel state information reporting to a base station apparatus, whereinapplicable values for the periodicity value are depending on a UL-DL configuration,in a case where the second information is configured, the UL-DL configuration is a first UL-DL configuration which is indicated by the second information, andin a case where the second information is not configured, the UL-DL configuration is a second UL-DL configuration which is indicated by the first information.2. The terminal apparatus according to claim 1 , whereina first periodicity value is included in the applicable values ...

APPARATUS AND METHOD FOR SUPERPOSITION TRANSMISSIONS

Apparatuses, systems, and methods are described concerning a new type of superposition multiplexing transmission constellation (super-constellation): the Gray-mapped Non-uniform-capable Constellation (GNC). Apparatuses, systems, and methods for generating GNC super-constellations are described, as well as apparatuses, systems, and methods for receiving, demapping, and decoding transmissions using GNC super-constellations. Apparatuses, systems, and methods for selecting a type of superposition multiplexing transmission constellation based on various conditions are also described. 1. A method of selecting a superposition constellation comprising two or more user equipment (UE) constellations , comprising:determining which type of superposition constellation (super-constellation) to generate based at least on a power ratio among the two or more UEs, wherein one type of super-constellation is a Gray-mapped Non-uniform-capable Constellation (GNC), in which both the constituent constellations of the two or more UEs and the GNC super-constellation itself are Gray-mapped; andwhen the determined type of superposition constellation is the GNC super-constellation, generating the determined type of superposition constellation by mapping the GNC super-constellation from outermost bits to innermost bits according to each of K number of UEs.2. The method of claim 1 , wherein claim 1 , if each of the K UEs uses Quaternary Phase Key Shifting (QPSK) modulation for a single-user constellation claim 1 , mapping the GNC super-constellation can be represented by:{'br': None, 'i': b', ',b', ',b', ',b', ', . . . ,b', ',b', 'b', ',b', 'b', ',b', 'b', ',b, 'sub': 0', '1', '2', '3', '2k-2', '2K-2', '0', '1', '2', '3', '2K-2', '2K-1, '()=()⊕() . . . ⊕(),'}{'sub': 0', '1', '2', '3', '2K-2', '2K-1, 'where (b, b) are two bits for a first UE and the outermost bits, (b, b) are two bits for a second UE, and so on, until (b, b), two bits for a Kth UE and the innermost bits.'}3. The method of claim 1 ...

APPARATUS AND METHOD FOR SUPERPOSITION TRANSMISSIONS

Apparatuses, systems, and methods are described concerning a new type of superposition multiplexing transmission constellation (super-constellation): the Gray-mapped Non-uniform-capable Constellation (GNC). Apparatuses, systems, and methods for generating GNC super-constellations are described, as well as apparatuses, systems, and methods for receiving, demapping, and decoding transmissions using GNC super-constellations. Apparatuses, systems, and methods for selecting a type of superposition multiplexing transmission constellation based on various conditions are also described. 1. A method for a user equipment (UE) in a communication system capable of superposition multiplexing transmission , the method comprising:receiving an indication that superposition transmission is being used to transmit to the UE;receiving an indication of which type of superposition transmission is being used to transmit to the UE, wherein at least one type of superposition transmission uses a Gray-mapped Non-uniform-capable Constellation (GNC) super-constellation;receiving one or more superposition transmission parameters; anddetermining a Log-Likelihood Ratio (LLR) approximation of a received transmission based at least on the type of superposition transmission being used and the one or more superposition transmission parameters.2. The method of claim 1 , wherein the indication of which type of superposition transmission is being used comprises an indication of rank and an indication of super-constellation mapping.3. The method of claim 1 , wherein at least one of the indication of which type of superposition transmission and the one or more superposition transmission parameters is received on at least one of physical downlink control channel (PDCCH) and enhanced physical downlink control channel (EPDCCH).4. The method of claim 3 , wherein the at least one of the indication of which type of superposition transmission and the one or more superposition transmission parameters is received ...

Codeword disabling in multi-subframe grants

The present disclosure relates to enabling and disabling of codewords in multi-subframe grants. In particular, dynamic and subframe based enabling/disabling of codewords is enabled even if other control parameters including the resource allocation is performed for multiple subframes. For instance, signal from a scheduling entity to a scheduled entity comprises control information including the resource grant common for multiple subframes and a plurality of codewords for each subframe, and a codeword indication indicating enabling or disabling of one or more codewords for each of the multiple subframes. For each subframe it is determined whether a codeword from the plurality of codewords in said subframes is enabled or disabled according to the codeword indication and/or which codeword is enabled or disabled. The indication of enabling and disabling may alternatively be done by using modulation and coding scheme indicator values which are not associated with a particular modulation and coding scheme.

Method and apparatus for communicating with extended range in a wireless network

Techniques for supporting communication over an extended range in a wireless network are disclosed. In one aspect, a station sends multiple messages of a given type for different operating modes. These messages can be detected by stations with different capabilities, which may avoid collisions between stations. In one design, a first station receives a Request-to-Send (RTS) message from a second station having data to send. The first station sends a first Clear-to-Send (CTS) message and also a second CTS message in response to the RTS message. The second CTS message has an extended range as compared to the first CTS message. The first station thereafter (i) receives data sent by the second station in response to the second CTS message and (ii) sends an acknowledgement having an extended range.

APPARATUS AND METHOD FOR CONVERSION BETWEEN ANALOG AND DIGITAL DOMAINS WITH A TIME STAMP

An apparatus and method are disclosed with some embodiments including an analog and time to digital converter (ATDC) including a receiver, the receiver for receiving an analog channel input for conversion to a digital data, the digital data having at least one bit, and a defined absolute reference time stamp, the defined absolute reference time stamp representing an absolute reference time associated with conversion of the analog channel input to the digital data and an analog-to-digital converter, the converter converting the analog channel input to the digital data. 1. A method for converting an analog channel input to a digital data , comprising:receiving the analog channel input for conversion to the digital data, the digital data having at least one bit, and a defined absolute reference time stamp; andconverting the analog channel input to the digital data, wherein the defined absolute reference time stamp represents an absolute reference time associated with the converting the analog channel input to the digital data.2. The method for converting an analog channel input to a digital data of claim 1 , wherein a comparator receives the analog channel input for converting the analog channel input to the digital data.3. The method for converting an analog channel input to a digital data of claim 2 , wherein the comparator produces a comparator output received by a clock input of a positive edge-detecting flip flop and a clock input of a negative edge-detecting flip flop.4. The method for converting an analog channel input to a digital data of claim 3 , wherein a first series of flip-flops receive output from positive edge-detecting flip flop and a second series of flip-flops receive output from the negative edge-detecting flip flop.5. The method for converting an analog channel input to a digital data of claim 4 , wherein the first series of flip-flops includes at least 8 D-type flip flops and the second series of flip-flops includes at least 8 D-type flip flops.6. ...

Reciprocal Beamforming

The present disclosure describes methods and apparatuses for reciprocal beamforming In some aspects, the techniques include transmitting feedback messages over a same frequency bandwidth of a channel to which the feedback message relates. For example, a user device receives data from a base station on a physical downlink share channel that occupies a bandwidth. The user device attempts to decode data packets of the data and determines which of the data packets were received successfully. The user device prepares an acknowledge/not acknowledge communication to indicate which data packets were successfully received. The acknowledge/not acknowledge communication is transmitted, by the user device, to the base station over an uplink channel The uplink channel occupies communication resources within the bandwidth of the downlink channel 1. A method of reciprocal beamforming performed by a user device , the method comprising:receiving, via a transceiver of the user device and over a wireless connection, data from a base station, the data received over a beamformed physical downlink share channel (PDSCH) occupying a PDSCH bandwidth of the wireless connection;analyzing the data to determine whether data packets of the data are successfully or unsuccessfully received by the user device; and transmitted over an uplink channel occupying communication resources within the PDSCH bandwidth of the wireless connection; and', 'usable by the base station for beamforming training to improve the beamformed PDSCH., 'transmitting, to the base station via the transceiver of the user device, an acknowledge/not acknowledge (ACK/NACK) communication indicating which data packets of the data were successfully received by the user device, the ACK/NACK communication2. The method as recited in claim 1 , wherein the uplink channel comprises a physical uplink control channel (PUCCH).3. The method as recited in claim 1 , wherein the uplink channel comprises a physical uplink share channel (PUSCH).4. ...