Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 1104. Отображено 100.
19-04-2012 дата публикации

Method and system for transmitting and receiving signal using multiple frequency bands in a wireless communication system

Номер: US20120093007A1
Автор: Hyoung-Kyu Lim, Hyun-Jeong Kang, Jae-hee Cho, Jae-Hyuk Jang, Jung-Je Son, Min-Hee Cho, Sung-jin Lee, Yeong-Moon Son
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method for transmitting and receiving signals using multiple frequency band in a wireless communication system are provided, in which a BS determines whether an MS is to use a plurality of FAs, selects the plurality of FAs if it is determined that the MS is to use the plurality of FAs, transmits FA information about the selected FAs to the MS, and transmits and receives signals to and from the MS in the selected FAs.

Подробнее
Номер записи: 1
04-07-2013 дата публикации

APPARATUS AND METHOD FOR TRANSCEIVING A SIGNAL USING A PREDETERMINED FRAME STRUCTURE IN A WIRELESS COMMUNICATION SYSTEM

Номер: US20130170409A1
Автор: Chun Jinyoung, Ihm Binchul, Kang Seunghyun, KIM Sunam, Ko Hyunsoo, Koo Jaho, Lee Moonil, Lee Wookbong, PARK Sungho
Принадлежит: LG ELECTRONICS INC.

Disclosed are an apparatus and method for transceiving a signal using a frame structure appropriate for a high-speed moving body. The method for transceiving a signal using a predetermined frame structure according to the present invention comprises a step of transceiving a signal via a frame having the predetermined frame structure, wherein one frame is constituted by eight subframes, and said frame consists of a type-1 subframe consisting of six orthogonal frequency division multiple access (OFDMA) symbols and a type-2 subframe consisting of seven OFDMA symbols, and said frame has a cyclic prefix length which is either 0, 1/32 of the useful symbol length, 1/64 of the useful symbol length, or 1/128 of the useful symbol length. 1. A method for transceiving signals using a predetermined frame structure in a wireless communication system , the method comprising:transceiving signals via a frame based on the predetermined frame structure,wherein one frame is constituted by 8 subframes in the predetermined the frame structure, and the frame consists of a type-1 subframe consisting of 6 OFDMA (Orthogonal Frequency Division Multiple Access) symbols and a type-2 subframe consisting of 7 OFDMA symbols, and the frame has a CP (Cyclic Prefix) time which is either 0, 1/32 of a effective symbol time, 1/64 of the effective symbol time, or 1/128 of the effective symbol time.2. The method of claim 1 , wherein the frame is a TDD (Time Division Duplex) frame or a FDD (Frequency Division Duplex) frame.3. The method of claim 2 , wherein the FDD frame consists of 2 Type-1 subframes and 6 Type-2 subframes when the CP time is 0 or 1/128 of the effective symbol time.4. The method of claim 2 , wherein the FDD frame consists of 3 Type-1 subframes and 5 Type-2 subframes when the CP time is 1/32 or 1/64 of the effective symbol time.5. The method of claim 2 , wherein the TDD frame consists of 3 Type-1 subframes and 5 Type-2 subframes when the CP time is 0 or 1/128 of the effective symbol time.6 ...

Подробнее
Номер записи: 2
17-10-2013 дата публикации

Supported, self-optimizing wireless networks, optimized with respect to energy, mobility, and capacity

Номер: US20130272132A1
Автор: DEBDEEP CHATTERJEE, Huaning Niu, Hujun Yin, JONG-KAE FWU, Youn Hyoung Heo, Yuan Zhu, Yujian Zhang
Принадлежит: Intel Corp

Technology is discussed for self-optimization approaches within wireless networks to optimize networks for energy efficiency, load capacity, and/or mobility, together with new, supporting channel state measurements and handover techniques. New, Channel State Information-Reference Signals (CSI-RSs) for yet-to-be-configured Cell-IDentifications (Cell-IDs) can be used to determine whether adjacent transmission cells can provide coverage for transmission cells that can be switched off for energy efficiency during formation of a Single Frequency Network (SFN). New approaches are also discussed to facilitate mobility within such a network. The new CSI-RSs and mobility approaches can also be used to split up such a SFN when changing load demands so require. Additionally, such new approaches can be used to create a SFN with a common Cell-ID where high mobility is required, such as near a roadway, and to break it up where high capacity is required, such as during a period of traffic congestion.

Подробнее
Номер записи: 3
17-10-2013 дата публикации

Apparatus and method to enable device-to-device (d2d) discovery in cellular networks

Номер: US20130273923A1
Автор: Amitav Mukherjee, Honggang Li, Hujun Yin, JONG-KAE FWU, Qinghua Li, Xiaogang Chen, Yuan Zhu
Принадлежит: Intel Corp

An apparatus and method of allowing user equipment (UE) to transmit information directly with other user equipment, using a device-to-device (D2D) mode is disclosed herein. A D2D UE (dUE 1 ) that wishes so communicate to another UE (dUE 2 ) in D2D mode makes various communications requests to an Evolved Node B (eNB), which can facilitate the connection between dUE 1 and dUE 2 by having the dUE 1 measure the signals from dUE 2 to help establish a D2D connection between the dUE 1 and the dUE 2.

Подробнее
Номер записи: 4
06-02-2014 дата публикации

Inserting virtual carrier in conventional ofdm host carrier in communications system

Номер: US20140036821A1
Автор: Andrew LILLIE, Darren Mcnamara, Martin Beale, Peter Darwood
Принадлежит: SCA IPLA Holdings Inc

A method allocating transmission resources in an OFDM wireless telecommunication system configured to communicate data using plural OFDM sub-carriers. The method allocates transmission resources provided by a first group of the plural OFDM sub-carriers within a first frequency band to terminals of first type; allocates transmission resources provided by a second group of the plural OFDM sub-carriers within a second frequency band to terminals of second type, the second group being smaller than the first group and the second frequency band selected from within the first frequency band; transmits control information including resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers; and then transmits control information including resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers.

Подробнее
Номер записи: 5
06-02-2014 дата публикации

FREQUENCY HOPPING

Номер: US20140036961A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит:

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into S contiguous sub-bands each having N frequency resources, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, the frequency shift corresponding to an integer multiple of the number N frequency resources in each sub-band, the integer multiple being an integer from the range zero to S, and a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources , the communications node comprising:data defining a division of the communications channel into S contiguous sub-bands each having N frequency resources;data defining an initial allocation of said frequency resources; 'apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, the frequency shift corresponding to an integer multiple of the number N frequency resources in each sub-band, the integer multiple being an integer from the range zero to S; and', 'a resource determination module operable toa transceiver for communicating information with the other communications node using the determined frequency resource.2. A communications node according to wherein said transceiver is operable to at least one of transmit information to and ...

Подробнее
Номер записи: 6
27-02-2014 дата публикации

AAS Direct Signaling Framing Methodologies to Support High Capacity Wireless Links

Номер: US20140056294A1
Автор: Branlund Dale A., Bromberg Matthew C.
Принадлежит: THE DIRECTV GROUP, INC.

A new frame structure applicable to the IEEE 802.16 OFDMA wireless waveform is described, for the purposes of increasing base station capacity, increasing subscriber link rates and extending base station range. The frame structure provides the necessary constructs so that advance signal processing technologies such as Stacked Carrier Spread Spectrum and adaptive antenna technology may be used in combination with these constructs in order to realize these gains. These concepts are equally applicable in other advanced wireless waveforms based on OFDM or OFDMA such as LTE or UMB. 1. A method of grouping orthogonal frequency-division multiple access (OFDMA) symbols , and subgroups of OFDMA subcarriers/subchannels therein , to enable stacked carrier spread spectrum (SCSS) and SCSS adaptive array processing , the method being performed in an adaptive antenna system , the method comprising: a plurality of access subchannels, wherein each access subchannel k is paired with access subchannel k+n/2, where n is the total number of subchannels, and k is an index of access subchannels designated for access, and wherein each access subchannel contains at least one data burst region;', 'a predefined number of orthogonal frequency-division multiple access (OFDMA) symbols containing training preambles for an adaptive antenna system (AAS) and distributed across all access subchannels that demarcate a selected AAS zone and are used to adapt stacked carrier spread spectrum adaptive array processing at a receiving station; and', 'a plurality of payload subchannels, wherein each payload subchannel j is paired with payload subchannel j+n/2 where n is the total number of subchannels and j is an index of payload subchannels designated for data transport, wherein each payload subchannel contains at least one data burst region, and wherein each payload subchannel is exactly one or two AMC bins by c OFDM symbols and where c is less than or equal to the number of symbols in the subframe., ' ...

Подробнее
Номер записи: 7
06-01-2022 дата публикации

DIGITAL CHANNELIZER WITH PREDISTORTER, HIGH-POWER AMPLIFIER, AND BEAMFORMING

Номер: US20220007311A1
Автор: Goswami Madhuprana, Kwon Hyuck M., PHAM Khanh, Rana Vidhi
Принадлежит:

A satellite communications system is disclosed, the system comprising a ground controller, a decode-and-forward (DF) satellite transponder, and a digital high-power amplifier (HPA). The DF is further comprised of a transponder front end including a digital channelizer and a predistorter. The ground controller is configured to transmit multiple-access frequency-division-multiplexed signals to the DF, where the DF is configured to down-convert the signals received at the transponder front end. The digital channelizer is configured to convert the signals received into a single sample steam and feed the stream through the predistorter into the single digital HPA, wherein the HPA is configured to amplify each input sample of the stream in sample-by-sample fashion and generates a discrete output. The DF is further configured to convert the output of the digital HPA to a continuous time signal and up-convert the output with a main carrier frequency for down-link transmission to multiple-access ground users. 1. A satellite communications system comprising:a ground controller;a decode-and-forward satellite transponder having a transponder front end including a digital channelizer and a predistorter; anda digital high-power amplifier;wherein the ground controller is configured to transmit multiple-access frequency-division-multiplexed signals to the decode-and-forward satellite transponder;wherein the decode-and-forward satellite transponder is configured to down-convert the signals received from the ground controller at the transponder front end;wherein the digital channelizer is configured to convert the signals received from the ground controller into a single sample stream and feed the single sample stream through the predistorter into the single digital high-power amplifier;wherein the single digital high power amplifier is configured to amplify each input sample of the sample stream in sample-by-sample fashion and generate a discrete output; andwherein the decode-and- ...

Подробнее
Номер записи: 8
08-01-2015 дата публикации

Cancellation of Spurious Responses From Local Oscillator Cross-Coupling

Номер: US20150009866A1
Автор: Fenghao Mu, Lars Sundström
Принадлежит: Telefonaktiebolaget LM Ericsson AB

Interference cancellation techniques may be implemented in a radio transceiver configured to transmit a radio-frequency transmit signal at a transmit frequency and having two or more local oscillators operative to simultaneously generate local oscillator signals, at corresponding local oscillator frequencies, for simultaneously down-converting two or more corresponding received radio-frequency signals. An example method begins with identifying one or more self-interfering frequencies, based on the local oscillator frequencies and the transmit frequency. A baseband cancellation signal is then generated by weighting and frequency-shifting a baseband representation of the transmit signal, based on the identified self-interfering frequencies. The baseband cancellation signal is then combined with a down-converted received signal, to obtain an interference-reduced baseband signal.

Подробнее
Номер записи: 9
14-01-2016 дата публикации

METHOD AND APPARATUS FOR TRANSMITTING SRS IN LTE TDD SYSTEM

Номер: US20160013924A1
Автор: Li Xiaoqiang, Li Yingyang
Принадлежит:

A method and apparatus are provided for transmitting and receiving an uplink Sounding Reference Signal (SRS). The method includes receiving a sounding reference signal (SRS) configuration index; identifying an SRS periodicity and at least one offset based on the SRS configuration index; transmitting SRSs four times within a radio frame based on the at least one offset, if the SRS periodicity is 2 ms and an uplink-downlink (UL-DL) subframe configuration 0, 1, 2, or 6 is applied; and transmitting the SRSs twice within the radio frame based on the at least one offset, if the SRS periodicity is 2 ms and to the UL-DL subframe configuration 3, 4, or 5 is applied. 1. A method for a terminal in a wireless communication system , the method comprising:receiving a sounding reference signal (SRS) configuration index;identifying an SRS periodicity and at least one offset based on the SRS configuration index;transmitting SRSs four times within a radio frame based on the at least one offset, if the SRS periodicity is 2 ms and an uplink-downlink (UL-DL) subframe configuration 0, 1, 2, or 6 is applied; andtransmitting the SRSs twice within the radio frame based on the at least one offset, if the SRS periodicity is 2 ms and the UL-DL subframe configuration 3, 4, or 5 is applied.2. The method of claim 1 , wherein the SRSs are transmitted on at least two single-carrier frequency division multiple access (SC-FDMA) symbols that are indicated by the at least one offset in the radio frame.3. The method of claim 1 , wherein the SRS configuration index is one of 10 SRS configuration indices for the 2 ms SRS periodicity in a time division duplex (TDD) system.4. The method of claim 1 , wherein the SRSs are transmitted in an uplink subframe.5. A method for a base station in a wireless communication system claim 1 , the method comprising:transmitting a sounding reference signal (SRS) configuration index, wherein at least one offset is determined based on the SRS configuration index;receiving ...

Подробнее
Номер записи: 10
14-01-2016 дата публикации

Adaptation of control signaling transmissions to variations in respective resources

Номер: US20160014751A1
Автор: Aris Papasakellariou, Hyoungju JI
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and an apparatus for a User Equipment (UE) to receive a first type of a Physical Downlink Control CHannel (PDCCH) or a second type of a PDCCH in a Transmission Time Interval (TTI) are provided whereby the first type of PDCCH and the second type of PDCCH convey respective Downlink Control Information (DCI) formats containing Cyclic Redundancy Check (CRC) bits scrambled with a Radio Network Temporary Identifier (RNTI). The method includes receiving by the UE a first bitmap associated with a number of TTIs equal to the first bitmap size, wherein each element of the first bitmap indicates whether a TTI is of a first type or of a second type, decoding by the UE only PDCCH of the first type if the TTI is of the first type, and decoding by the UE only PDCCH of the second type if the TTI is of the second type.

Подробнее
Номер записи: 11
09-01-2020 дата публикации

Method of allocating radio resources in multi-carrier system

Номер: US20200015232A1
Автор: Bong Hoe Kim, Dong Youn Seo, Eun Sun Kim, Hak Seong Kim, Joon Kui Ahn, Jung Hoon Lee, Ki Jun Kim, Suk Hyon Yoon, Young Woo Yun
Принадлежит: Wild Guard Ltd

A method of allocating radio resources in a multi-carrier system is disclosed, by which a signaling message can be efficiently transmitted according to necessity of a user equipment. In a user equipment of a mobile communication system transceiving data using a plurality of subcarriers, the present invention includes the steps of if the signaling message to be transmitted is generated in the user equipment, generating a preamble sequence according to a user equipment identifier to identify the user equipment, transmitting a preamble signal including the preamble sequence and the signaling message to a base station, and receiving an acknowledgement signal for the preamble signal generated according to the user equipment identifier.

Подробнее
Номер записи: 12
19-01-2017 дата публикации

MULTIPLE ACCESS METHOD AND SYSTEM WITH ADAPTIVE FREQUENCY MULTIPLEXING OF DATA SEND AUTHORIZATION REQUESTS

Номер: US20170019223A1
Автор: DORE Jean-Baptiste, MAWLAWI Baher
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

A method for multiple access to a frequency band of a communication channel of a communication network with carrier sensing and collision avoidance, including a division of the frequency band into a set of request-to-send sub-bands dedicated to the transmission, by source nodes to a destination node, of request-to-send messages for communicating data on the frequency band is provided. The method includes an evaluation of a communication channel load, and, as a function of the result of the evaluation, a re-division of the frequency band to modify the number of sub-bands of the set of request-to-send sub-bands. 1: A method for multiple access to a frequency band of a communication channel in a communication network with carrier sensing and collision avoidance , wherein the frequency band is divided into a set of request-to-send sub-bands dedicated to the transmission , by source nodes to a destination node , of request-to-send messages for communicating data on the frequency band , the method comprising:implementing of the multiple access to the frequency band divided into a first number of request-to-send sub-bands during a first time window, and evaluating of the bitrate of the data sent on the frequency band during the first time window,modifying the division of the frequency band, implementing of the multiple access to the frequency band divided into a second number of request-to-send sub-bands during a second time window, and evaluating the bitrate of the data sent on the frequency band during the second time window,comparing the bitrate of the data sent on the frequency band during the first time window with the bitrate of the data sent on the frequency band during the second time window,modifying the division of the frequency band, by increasing or reducing the number of request-to-send sub-bands depending on the result of the bitrates comparing.2: The method according to claim 1 , wherein if the bitrate during the first time window is greater than the bitrate ...

Подробнее
Номер записи: 13
28-01-2021 дата публикации

FREQUENCY HOPPING

Номер: US20210028816A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A method for a user device , the method comprising:receiving information from a base station, the information corresponding to first contiguous resource blocks allocated to the user device, communicating with the base station using the first contiguous resource blocks starting from a first resource block at a first period in a subframe; andcommunicating with the base station using second contiguous resource blocks starting from a second resource block at a second period in the subframe;wherein a number of the first contiguous resource blocks is the same as a number of the second contiguous resource blocks,wherein a position of the second resource block in a frequency axis is determined using A mod B,wherein A is determined by sum of a first value and a second value, 'an uplink bandwidth size, and', 'wherein B is determined by a third value, the third value indicatingwherein the first value indicates a position of the first resource block in the ...

Подробнее
Номер записи: 14
01-02-2018 дата публикации

Data transmission method, device, and transceiver

Номер: US20180035318A1
Автор: Sheng Liu
Принадлежит: Huawei Technologies Co Ltd

A data transmission method, a device, and a transceiver are provided. The method is applied to a data transmission method for an access point. A transceiver of the access point includes m transmit paths and n receive paths. In the present invention, uplink transmission and downlink transmission can be performed simultaneously on different channels, so that a transmit path and a receive path work simultaneously, increasing usage of the transmit path and the receive path and increasing a throughput of a system.

Подробнее
Номер записи: 15
09-02-2017 дата публикации

Method and Apparatus for Prioritizing Logical Channels

Номер: US20170041933A1
Автор: JIN Wang, Mohammed Sammour, Stephen E. Terry, Ulises Olvera-Hernandez
Принадлежит: InterDigital Patent Holdings Inc

A method and apparatus are disclosed for prioritizing logical channels when a new transmission is performed. Logical channel resources are allocated for available data to a plurality of logical channels. A maximum bit rate (MBR) credit (i.e., token) is decremented in a buffer (i.e., bucket) associated with a particular one of the logical channels by the size of a medium access control (MAC) service data unit (SDU). The MBR credit may have a negative value. If any of the allocated channel resources remain, the logical channels are served n a decreasing priority order until the data is exhausted. A radio link control (RLC) SDU is not segmented if the whole RLC SDU fits into the remaining resources. The MAC SDU excludes a MAC PDU header and MAC padding.

Подробнее
Номер записи: 16
07-02-2019 дата публикации

Wireless communication system, wireless station, and wireless communication method

Номер: US20190045035A1
Автор: Junichi Iwatani, Masato Mizoguchi, Shoko Shinohara, Yasuhiko Inoue
Принадлежит: Nippon Telegraph and Telephone Corp

There is provided a wireless station including a plurality of standard controls corresponding respectively to a plurality of wireless communication standards sharing a frequency resource, the wireless station including a simultaneous transmissions management part setting a parameter for a random access process corresponding to each of the plurality of wireless communication standards for each of the plurality of standard controls, controlling frequencies and transmission start timings of the plurality of wireless communication standards, and simultaneously transmitting wireless frames of each of the wireless communication standards which obtained the transmission opportunities using FDMA, the plurality of standard controls are configured to simultaneously transmit the wireless frames of the plurality of wireless communication standards using FDMA, with the frequency resource which obtained the transmission opportunities by performing the random access process corresponding to each of the wireless communication standards under the control of the simultaneous transmissions management part.

Подробнее
Номер записи: 17
15-02-2018 дата публикации

METHODS AND APPARATUS FOR ACKNOWLEDGMENT OF MULTI-USER UPLINK WIRELESS TRANSMISSIONS

Номер: US20180048573A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Vermani Sameer
Принадлежит:

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication includes receiving, via a first device, a first wireless message granting permission for the first device to transmit a message during a transmission opportunity, the first wireless message being transmitted to the first device at least partially concurrently with a transmission of at least a portion of a second wireless message addressed to a second device, the first wireless message being received over a first spatial stream and the second wireless message being transmitted over a second spatial stream; and transmitting, via the first device, a third message to a third device during the transmission opportunity at least partially concurrently with a transmission of a fourth message by the second device to the third device. 1. A method of wireless communication , comprising:receiving, via a first device, a first wireless message granting permission for the first device to transmit a message during a transmission opportunity, the first wireless message being transmitted to the first device at least partially concurrently with a transmission of at least a portion of a second wireless message addressed to a second device, the first wireless message being received over a first spatial stream and the second wireless message being transmitted over a second spatial stream; andtransmitting, via the first device, a third message to a third device during the transmission opportunity at least partially concurrently with a transmission of a fourth message by the second device to the third device.2. The method of claim 1 , further comprising:receiving, via the first device, a fifth message; anddecoding the fifth message to determine whether the first device should initiate transmission during the transmission opportunity at a particular time, wherein the transmission of the third message is initiated at the particular time based on the fifth message.3. The method of ...

Подробнее
Номер записи: 18
15-02-2018 дата публикации

METHODS AND APPARATUS FOR MULTIPLE USER UPLINK

Номер: US20180048574A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Vermani Sameer
Принадлежит:

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes receiving a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity. The trigger frame further includes a request for the two or more stations to concurrently transmit uplink data at a specific time. The method includes transmitting uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point. 1. An apparatus for wireless communication comprising:a receiver configured to receive a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity, the trigger frame further comprising a request for the two or more stations to concurrently transmit uplink data at a specific time; anda transmitter configured to transmit uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point.2. The apparatus of claim 1 , wherein the uplink transmission opportunity has a common duration for each transmission of the uplink data.3. The apparatus of claim 1 , wherein the specific time is communicated based on a short interframe space (SIFS) or a point interframe space (PIFS) time after the end of the reception of the trigger frame.4. The apparatus of claim 1 , wherein the transmitter is further configured to transmit a clear to send (CTS) message having a scrambling sequence at a time after receiving the trigger frame and before the transmitting of the uplink data claim 1 , the scrambling sequence being the same as a scrambling sequence of a clear to send (CTS) message transmitted by the another of the two or more stations.5. The apparatus of claim 1 , wherein the trigger frame comprises a physical ...

Подробнее
Номер записи: 19
03-03-2022 дата публикации

WAKE UP RECEIVER FRAME

Номер: US20220070785A1
Автор: Azizi Shahrnaz, Bravo Daniel F., Ginsburg Noam, HUANG PO-KAI, Kenney Thomas J., Kristem Vinod
Принадлежит:

This disclosure describes systems, methods, and devices related to wake up receiver (WUR) frequency division multiple access (FDMA) transmission. A device may cause to send a wake up receiver (WUR) beacon frame on a WUR beacon operating channel to one or more station devices. The device may determine a first wake-up frame to be sent on a first WUR operating channel, wherein the first WUR operating channel is associated with one or more frequency division multiple access (FDMA) channels used for transmitting one or more wake-up frames to the one or more station devices. The device may determine to apply padding to the first wake-up frame based on a field included in a header of the first wake-up frame. The device may cause to send the first wake-up frame to a first station device of the one or more station devices. 1. A device , the device comprising processing circuitry coupled to storage , the processing circuitry configured to:receive a wake-up frame on a frequency division multiple access (FDMA) operating channel, wherein the wake-of frame comprises a legacy preamble, a wake-up data field, and an optional padding portion based on a length of the longest wake-up frame sent from an AP;decode a legacy signaling (L-SIG) field from the wake-up frame to extract a length value associated with the wake-up frame, wherein the length value is equal to a second length value of a second wake-up frame sent from an access point (AP) to a second station device (STA);select a first indication of a first transition delay to start communication after receiving the wake-up frame; andreceive from the AP an indication of a transmission schedule based on the first transition delay.2. The device of claim 1 , wherein the L-SIG field is included in a 20 MHz preamble of the wake-up frame.3. The device of claim 1 , wherein the optional padding is to align ends of a plurality of wake-up frames sent from the AP.4. The device of claim 1 , wherein the processing circuitry is further configured ...

Подробнее
Номер записи: 20
03-03-2022 дата публикации

ADAPTIVE WAVEFORM SELECTION IN WIRELESS COMMUNICATIONS

Номер: US20220070916A1
Автор: AKKARAKARAN Sony, Luo Tao
Принадлежит:

Systems and methods of wireless communication in which wireless devices are adapted to implement adaptive waveform selection are disclosed. For example, operation according to embodiments may provide for use of a waveform design that minimizes peak-to-average power ratio (PAPR), such as single-carrier frequency division multiplexing (SC-FDM), as well as a waveform design that provides higher spectral efficiency, such as orthogonal frequency division multiplexing (OFDM), for scenarios that are not power-limited and the higher PAPR is acceptable. Adaptive waveform selection may be based implicitly on one or more parameters or may be based on explicit signaling. Adaptive waveform selection may be utilized with respect to initially establishing a communication link and/or with respect to an established communication link.

Подробнее
Номер записи: 21
05-03-2015 дата публикации

METHODS AND APPARATUS FOR MULTIPLE USER UPLINK

Номер: US20150063191A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Vermani Sameer
Принадлежит:

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes transmitting a clear to transmit (CTX) message to two or more stations, the CTX indicating an uplink transmission opportunity, the CTX message further comprising a request that the two or more stations concurrently transmit uplink data at a specific time. The method further includes receiving a plurality of uplink data from at least two stations at the specific time. 1. An apparatus for wireless communication comprising:a transmitter configured to transmit a clear to transmit (CTX) message to two or more stations, the CTX message indicating an uplink transmission opportunity, the CTX message further comprising a request for the two or more stations to concurrently transmit uplink data at a specific time; anda receiver configured to receive a plurality of uplink data transmissions at the specific time from at least two stations of the two or more stations.2. The apparatus of claim 1 , wherein the uplink transmission opportunity has a common duration for each of the plurality of uplink data transmissions.3. The apparatus of claim 1 , wherein the specific time is communicated based on a short interframe space (SIFS) or a point interframe space (PIFS) time after the end of the transmission of the message.4. The apparatus of claim 1 , wherein the receiver is further configured to receive a plurality of clear to send (CTS) messages with having a common scrambling sequence at a time after the end of the transmission of the CTX message and before the receiving of the plurality of uplink data.5. The apparatus of claim 1 , wherein the CTX message comprises a physical layer data unit (PPDU) duration field indicating a duration for the transmission of the uplink data.6. The apparatus of claim 1 , wherein the CTX message comprises one or more station (STA) information fields for a particular station.7. The apparatus of claim 6 , wherein ...

Подробнее
Номер записи: 22
01-03-2018 дата публикации

BASE STATION AND METHOD USING A BASE STATION

Номер: US20180062823A1
Автор: Hasegawa Tsuyoshi
Принадлежит: FUJITSU LIMITED

A base station includes a transmitter configured to transmit a downlink signal to a terminal device in a first frequency band, a receiver configured to receive an uplink signal from the terminal device in a second frequency band narrower than the first frequency band, at least a part of the second frequency band being included in the first frequency band, and a canceller circuit configured to execute a suppression process of a self-interference in which the downlink signal transmitted from the transmitter reaches the receiver and interferers with the uplink signal, wherein the canceller circuit executes the suppression process by limiting to a third frequency band including the second frequency band and not including at least a part of the first frequency band. 1. A base station comprising:a transmitter configured to transmit a downlink signal to a terminal device in a first frequency band;a receiver configured to receive an uplink signal from the terminal device in a second frequency band narrower than the first frequency band, at least a part of the second frequency band being included in the first frequency band; anda canceller circuit configured to execute a suppression process of a self-interference in which the downlink signal transmitted from the transmitter reaches the receiver and interferers with the uplink signal,wherein the canceller circuit executes the suppression process by limiting to a third frequency band including the second frequency band and not including at least a part of the first frequency band.2. The base station according to claim 1 , whereinthe canceller circuit includes an analog canceller circuit that executes a first process of suppressing the self-interference in an analog domain of the uplink signal received by the receiver.3. The base station according to claim 2 , whereinthe canceller circuit includes a filter circuit that filters a frequency band of an output signal of the analog canceller circuit into the third frequency band.4. ...

Подробнее
Номер записи: 23
20-02-2020 дата публикации

Signal transmission apparatus and method, and wireless access node

Номер: US20200059793A1
Автор: Guohua Zhou, Jiyu YE, Zongjie Wang
Принадлежит: Huawei Technologies Co Ltd

Embodiments of the present disclosure disclose a signal transmission apparatus and non-transitory computer-readable storage medium, and relate to the field of communications technologies. The apparatus comprises a memory storing program instructions and a processor coupled to the memory, wherein the program instructions, when executed by the processor, cause the apparatus to obtain configuration information for use to transmit a signal of a second carrier in coverage space of a first carrier, a spectrum occupied by the first carrier and a spectrum occupied by the second carrier overlap, and a subcarrier of the first carrier and a subcarrier of the second carrier are orthogonal; and transmit the signal of the second carrier according to the configuration information.

Подробнее
Номер записи: 24
12-06-2014 дата публикации

METHOD AND SYSTEM FOR SIGNAL DYNAMIC RANGE IMPROVEMENT FOR FREQUENCY-DIVISION DUPLEX COMMUNICATION SYSTEMS

Номер: US20140161005A1
Автор: Laurent-Michel Stephane
Принадлежит:

Canceling distortion in the receive path of a radio is achieved by down-converting an RF transmit signal to cancel leakage and intermodulation noise in a receive path baseband or intermediate frequency signal. Cancelation may be combined with digital pre-distortion of the transmit signal. Processing may be applied to optimize cancelation. Further cancelation can be achieved by re-modulating the demodulated and error-corrected receive signal, and predicting distortion caused by the transmit path. The cancelation system may be calibrated using a test signal. 1. A method for canceling intermodulation noise in the radio receive path , the method comprising:forwarding an RF transmit signal from a source between an up-converting mixer and an antenna in a radio transmit path to a down-converting mixer;down-converting the forwarded RF transmit signal;forwarding the down-converted transmit signal to the radio receive path; andcanceling at least a portion of the intermodulation noise included in a receive path signal using the down-converted transmit signal to create an intermodulation-reduced receive path signal.2. The method of claim 1 , further comprising digitizing the down-converted transmit signal claim 1 , and wherein cancelation is performed in the digital domain.3. The method of claim 2 , further comprising forwarding the digitized down-converted transmit signal to a digital pre-distortion system.4. The method of claim 1 , wherein down-converting is performed by a band-stop or bandpass mixer.5. The method of claim 1 , further comprising processing the down-converted transmit signal to cancel at least an additional portion of the intermodulation noise included in the receive path signal.6. The method of claim 5 , wherein the processing includes frequency decomposition.7. The method of claim 5 , wherein the processing includes:forwarding the digitized down-converted transmit signal to a digital pre-distortion system; andmodifying an LMS digital pre-distortion ...

Подробнее
Номер записи: 25
22-03-2018 дата публикации

METHODS AND SYSTEMS FOR FREQUENCY MULTIPLEXED COMMUNICATION IN DENSE WIRELESS ENVIRONMENTS

Номер: US20180083696A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Tandra Rahul, Tian Bin, Vermani Sameer, Zhou Yan
Принадлежит:

Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device. 1. A method of high-efficiency wireless frequency division multiplexing , comprising:receiving, at a first wireless device from an access point, a reference signal for reserving a wireless medium including a set of wireless frequencies available for use by both the first wireless device and a second wireless device, the reference signal including an indication of a power level at which at least one of the first and second wireless devices should transmit communications; andtransmitting, from the first wireless device to the access point, a first communication on a first subset of the set of wireless frequencies, the first communication being transmitted at least partially concurrent with a second communication transmitted on a second subset of the set of wireless frequencies from the second wireless device to the access point, and the first and second subsets of the set of wireless frequencies being mutually exclusive subsets of the set of wireless frequencies.2. The method of claim 1 , further comprising receiving claim 1 , from the access point on only the first subset of the set of wireless frequencies claim 1 , an ...

Подробнее
Номер записи: 26
12-03-2020 дата публикации

REAR-FACING PERCEPTION SYSTEM FOR VEHICLES

Номер: US20200082175A1
Автор: Han Xiaoling, MEI Xue
Принадлежит:

Devices, systems and methods for operating a rear-facing perception system for vehicles are described. An exemplary rear-facing perception system contains two corner units and a center unit, with each of the two corner units and the center unit including a camera module and a dual-band transceiver. A method for operating the rear-facing perception system includes pairing with a control unit by communicating, using the dual-band transceiver, over at least a first frequency band, transmitting a first trigger signal to the two corner units over a second frequency band non-overlapping with the first frequency band, and switching to an active mode. In an example, the first trigger signal causes the two corner units to switch to the active mode, which includes orienting the camera modules on the center unit and the two corner units to provide an unobstructed view of an area around a rear of the vehicle. 1. A method for operating a rear-facing perception unit in a vehicle , the rear-facing perception unit comprising two corner units and a center unit , each of the two corner units and the center unit comprising a camera module , a dual-band transceiver , and a power module , the method implemented on the center unit , the method comprising:pairing with a control unit, wherein the pairing comprises communicating, using the dual-band transceiver, over at least a first frequency band;transmitting, upon successfully pairing, a first trigger signal to the two corner units, wherein the first trigger signal is transmitted over a second frequency band non-overlapping with the first frequency band; andswitching, subsequent to transmitting the first trigger signal, to an active mode,wherein the first trigger signal causes the two corner units to switch to the active mode,wherein the power module comprises a battery,wherein the camera module of the center unit comprises a fisheye camera, andwherein the active mode comprises orienting the camera modules on the center unit and the two ...

Подробнее
Номер записи: 27
19-04-2018 дата публикации

Inserting virtual carrier in conventional ofdm host carrier in communications system

Номер: US20180109363A1
Автор: Andrew LILLIE, Darren Mcnamara, Martin Beale, Peter Darwood
Принадлежит: SCA IPLA Holdings Inc

A method of allocating transmission resources in an OFDM wireless telecommunication system arranged to communicate data using a plurality of OFDM sub-carriers. The method comprises allocating transmission resources provided by a first group of the plurality of OFDM sub-carriers within a first frequency band to terminals of a first type; allocating transmission resources provided by a second group of the plurality of OFDM sub-carriers within a second frequency band to terminals of a second type, the second group being smaller than the first group and the second frequency band being selected from within the first frequency band; transmitting control information comprising resource allocation information for terminals of the first type over a first bandwidth corresponding to the combined first and second groups of OFDM sub-carriers; and then transmitting control information comprising resource allocation information for terminals of the second type over a second bandwidth corresponding to the second group of OFDM sub-carriers.

Подробнее
Номер записи: 28
20-04-2017 дата публикации

APPARATUS AND METHOD FOR PERFORMING BEAMFORMING OPERATION IN COMMUNICATION SYSTEM SUPPORTING FREQUENCY DIVISION-MULTIPLE INPUT MULTIPLE OUTPUT SCHEME

Номер: US20170111084A1
Автор: KIM Tae-Young, LEE Keon-Kook, LOVE David J., SEOL Ji-Yun, SONG JI-HO
Принадлежит: PURDUE RESEARCH FOUNDATION

A pre-5th-generation (5G) or 5G communication system for supporting higher data rates beyond 4th-generation (4G) communication system, such as a long term evolution (LTE), is provided. A method for performing a beamforming operation in a communication system supporting a frequency division-multiple input multiple output (FD-MIMO) scheme is provided. The method includes detecting a rough beam of a first dominant beam, detecting at least two codeword candidates based on the rough beam of the first dominant beam, and selecting one of the at least two codeword candidates as a final codeword. 1. A method for performing a beamforming operation in a communication system supporting a frequency division-multiple input multiple output (FD-MIMO) scheme , the method comprising:detecting a rough beam of a first dominant beam;detecting at least two codeword candidates based on the rough beam of the first dominant beam; andselecting one of the at least two codeword candidates as a final codeword.2. The method of claim 1 , wherein the detecting of the at least two codeword candidates based on the rough beam of the first dominant beam comprises:detecting a first codeword candidate of the at least two codeword candidates by considering a scenario assuming one dominant beam in a channel; anddetecting a second codeword candidate of the at least two codeword candidates by considering a scenario assuming two dominant beams in a channel3. The method of claim 2 , wherein the detecting of the second codeword candidate of the at least two codeword candidates by considering the scenario assuming the two dominant beams in the channel comprises:detecting a second dominant beam and jointly combining the second dominant beam and a first dominant beam which corresponds to the first codeword candidate to detect the second codeword candidate.4. The method of claim 1 , wherein the detecting of the rough beam of the first dominant beam comprises:detecting a Kronecker-product of discrete Fourier ...

Подробнее
Номер записи: 29
17-07-2014 дата публикации

SYSTEMS AND METHODS FOR GENERATING A DISCOVERY SIGNAL IN A DEVICE-TO-DEVICE OR NETWORK COMMUNICATION

Номер: US20140198764A1
Автор: Fwu Jong-Kae, Han Seunghee, He Hong, Heo Youn Hyoung Youn, Papathanassiou Apostolos
Принадлежит:

The techniques introduced here provide for device discovery of a greater number of mobile devices in a mobile network by increasing the multiplexing capacity of the system. The techniques may be applied to device-to-device communication networks and small cells using low power nodes (e.g., pico and femto eNodeB in a GPP LTE or LTE advanced network). Additionally, the techniques provide for mapping between a mobile device ID and an orthogonal resource of the discovery signal. 1. A user equipment (UE) for use in device-to-device or network communication , comprising:a processing unit; and [ multiply a modulation symbol with a first sequence to generate a second sequence;', 'apply a series of cyclic shifts to the second sequence to generate a plurality of shifted sequences;', 'apply at least one orthogonal code cover (OCC) of total length N to the plurality of shifted sequences;', 'map the orthogonal shifted sequences onto subcarriers of a plurality of physical resource blocks (PRBs) of the physical channel; and', 'wherein to facilitate a multiplexing function of the device-to-device or network communication, the processing unit increases at least one of: the number of cyclic shifts, the total length of the at least one OCC, or the number of PRBs available; and, 'generate a plurality of multiple access symbols for transmission on a physical channel, wherein, to generate the plurality of multiple access symbols, the instructions cause the processor to, 'transmit the plurality of multiple access symbols on the physical channel., 'a memory coupled with the processing unit, the memory storing instructions, which when executed by the processor cause the processor to2. The UE of claim 1 , wherein the number of cyclic shifts is greater than 12.3. The UE of claim 1 , wherein the total length N of the at least one OCC is 7.4. The UE of claim 1 , wherein claim 1 , to increase the number of PRBs claim 1 , the instructions cause the processor to disable frequency hopping across ...

Подробнее
Номер записи: 30
07-05-2015 дата публикации

METHOD OF DECODING A RECEIVED SC-FDMA SYMBOL IN A RECEIVER IN A OFDM COMMUNICATION SYSTEM, A RECEIVER, AN APPARATUS, AN OFDM COMMUNICATION SYSTEM AND A COMPUTER PROGRAM PRODUCT

Номер: US20150124796A1
Автор: Bar-Or Amit, Dekel Tal, Kutz Gideon S.
Принадлежит:

A method of decoding a received SC-FDMA symbol in a receiver in a OFDM communication system is described. The method comprises calculating an approximate constellation energy {circumflex over (K)} from channel matrices Hfor all subcarriers i, a noise covariance matrix S, and a data signal power matrix C associated with the OFDM symbol, an approximate constellation energy {circumflex over (K)}. The approximate constellation energy {circumflex over (K)} is calculated according to: 3. The method of claim 1 , wherein the decoding comprises a Turbo decoding or a maximum likelihood Euclidian based decoding.4. The method of claim 1 , wherein the receiver is an LTE receiver and the OFDM communication system is an LTE communication system.5. The method of claim 1 , further comprising:{'sub': 'i', 'determining the channel matrices Hfor all subcarriers i from at least one received SC-FDMA pilot symbol as channel matrix estimates, and'}determining the noise covariance matrix from the at least one received SC-FDMA pilot symbol.6. The method of claim 5 , the method further comprising determining the data signal power matrix C from the at least one received SC-FDMA symbol.8. A constellation statistics calculator (CSCE) of claim 7 , further arranged to calculate an approximate constellation variance Û according to:{'br': None, 'i': Û=diag', '{circumflex over (Q)}=C, 'sup': −1', '−1, '(())'}9. A receiver (RECE) comprising a constellation statistics calculator (CSCE) of .10. The receiver of claim 9 , wherein the receiver is an LTE receiver.11. An OFDM communication system comprising the receiver of .12. The method of claim 2 , further comprising:{'sub': 'i', 'determining the channel matrices Hfor all subcarriers i from at least one received SC-FDMA pilot symbol as channel matrix estimates, and'}determining the noise covariance matrix from the at least one received SC-FDMA pilot symbol.13. The method of claim 3 , further comprising:{'sub': 'i', 'determining the channel matrices Hfor ...

Подробнее
Номер записи: 31
13-05-2021 дата публикации

Wake up receiver frame

Номер: US20210144645A1
Автор: Daniel F. BRAVO, Noam Ginsburg, Po-Kai Huang, Shahrnaz Azizi, Thomas J. Kenney, Vinod Kristem
Принадлежит: Intel Corp

This disclosure describes systems, methods, and devices related to wake up receiver (WUR) frequency division multiple access (FDMA) transmission. A device may cause to send a wake up receiver (WUR) beacon frame on a WUR beacon operating channel to one or more station devices. The device may determine a first wake-up frame to be sent on a first WUR operating channel, wherein the first WUR operating channel is associated with one or more frequency division multiple access (FDMA) channels used for transmitting one or more wake-up frames to the one or more station devices. The device may determine to apply padding to the first wake-up frame based on a field included in a header of the first wake-up frame. The device may cause to send the first wake-up frame to a first station device of the one or more station devices.

Подробнее
Номер записи: 32
04-05-2017 дата публикации

TRANSMISSION OF DATA WITH VOICE-ENCODED DATA UNITS ON A WIRELESS COMMUNICATIONS CHANNEL USING VARIABLE RATE BIT STEALING

Номер: US20170126898A1
Автор: MROWIEC ROBERT, Wawrowski Mariusz
Принадлежит:

A method and apparatus transmits data with voice-encoded data units on a wireless communications channel with a voice transmission. The arrangement determines a number of audio bits available for stealing by analyzing at least one parameter that affects voice quality selected from the group of: a movement velocity of the mobile communication radio, a signal strength or fading rate of the radio channel, a location of the mobile communication radio with respect to a coverage map, whether the mobile communication radio is disposed in an indoor location, and a distance from the communication radio to the base radio. The determination is provided to an audio and data coding profile. The profile is applied to substitute data bits for the determined number of audio bits in one or more voice-encoded data units and the mobile radio transmits the voice-encoded data units with the voice transmission. 1. A method for transmission of data with voice-encoded data units on a wireless communications channel , the method comprising:determining a number of audio bits available for stealing by analyzing at least one parameter that affects voice quality selected from the group consisting of a movement velocity of the mobile communication radio, a signal strength or a fading rate of the wireless communications channel, a location of the mobile communication radio with respect to a coverage map, an indoor location for the mobile communication radio, and a distance from the mobile communication radio to the base radio;providing the determined number of audio bits available to a preconfigured audio and data coding profile;applying the audio and data coding profile to substitute data bits for the determined number of audio bits for stealing in the one or more voice-encoded data units; andtransmitting the one or more voice-encoded data units with the voice transmission.2. The method according to claim 1 , further comprising:determining the movement velocity of the mobile communication radio; ...

Подробнее
Номер записи: 33
16-04-2020 дата публикации

FREQUENCY HOPPING

Номер: US20200119767A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A method for an user device , the method comprising:receiving information from a base station, the information indicating a first contiguous resource blocks allocated to the user device;communicating with the base station using the first consecutive resource blocks starting from a first resource block at a first slot in a first subframe and using a second consecutive resource blocks starting from a second resource block at a second slot in the first subframe; andcommunicating with the base station using a third consecutive resource blocks starting from a third resource block at a first slot in a second subframe and using a fourth consecutive resource blocks starting from a fourth resource block at a second slot in the second subframe;wherein a position of the first resource block is the same as a position of the second resource block in a frequency axis and a position of the third resource block is the same as a position of the fourth resource block in ...

Подробнее
Номер записи: 34
31-07-2014 дата публикации

Systems and Methods for SC-FDMA Diversity Transmission

Номер: US20140211778A1
Автор: Jia Ming, Ma Jianglei, Tong Wen, Xu Hua, Zhang Hang, ZHU PEIYING
Принадлежит: Apple Inc.

The present application provides methods, devices and transmitters that mitigate increases in peak to average power ratio (PAPR) from transmission diversity in a single carrier frequency division multiple access (SC-FDMA) modulated uplink. A PAPR preserving precode matrix hopping method that utilizes cyclic shift delays is provided, as well as a sub-band based transmit diversity scheme. The present application also provides methods, devices and transmitters that relax the scheduling restrictions associated with uplink scheduling in the LTE standard. 1. A method for transmit diversity on a SC-FDMA modulated uplink channel , comprising: precoding a sequence of SC-FDMA modulated symbols based on hopping through a time domain precoding vector that is different for each antenna, and', 'transmitting the plurality of precoded SC-FDMA modulated symbols., 'for each of a plurality of antennas2. The method of claim 1 , wherein the elements of the precoding vectors comprise {1} and {j}.3. The method of claim 2 , wherein the plurality of antennas comprises two antennas claim 2 , and the precoding vector comprises {1 claim 2 ,1} claim 2 , {1 claim 2 ,−1} claim 2 , {1 claim 2 ,j} and {1 claim 2 ,−j}.4. The method of claim 1 , wherein the SC-FDMA modulated uplink channel comprises forward error correction coded data.5. The method of claim 1 , wherein the SC-FDMA modulated uplink channel comprises the long term evolution (LTE) uplink random access channel (RACH).6. An apparatus for transmit diversity on a SC-FDMA modulated uplink channel claim 1 , comprising: means for precoding a sequence of SC-FDMA modulated symbols based on hopping through a time domain precoding vector that is different for each antenna, and', 'means for transmitting the plurality of precoded SC-FDMA modulated symbols., 'for each of a plurality of antenna7. The method of claim 6 , wherein the elements of the precoding vectors comprise {1} and {j}.8. The apparatus of claim 7 , wherein the plurality of antennas ...

Подробнее
Номер записи: 35
12-05-2016 дата публикации

SMALL CELL CONFIGURATION FOR INTERFERENCE MITIGATION

Номер: US20160134413A1
Автор: Lei Haipeng, LIU Xiaolong, Ribeiro Cássio, Shu Kodo, ZHANG Yuantao
Принадлежит:

Configuration of various radio systems may have a number of possible benefits. For example, small cell configuration may be useful for interference mitigation. A method, in certain embodiments, can include determining a virtual subframe index for a cell. The method can also include communicating the virtual subframe index for the cell by communicating a time division duplex configuration and a relative subframe offset. 134-. (canceled)35. A method , comprising:determining a virtual subframe index for a cell; andcommunicating the virtual subframe index for the cell by communicating a time division duplex configuration and a relative subframe offset.36. The method of claim 35 , wherein the cell comprises a frequency division duplex small cell.37. The method of claim 35 , wherein the determining and the communicating are performed by a base station of a macro cell that includes the cell.38. The method of claim 35 , wherein the virtual subframe index is defined by VSI=f(SSI claim 35 , offset)=mod (SSI+(10-offset) claim 35 , 10) claim 35 , where VSI is virtual subframe index and SSI is system subframe index.39. The method of claim 35 , wherein timing of a physical uplink control channel acknowledgement/negative acknowledgement for an uplink subframe corresponding to a base station off time at downlink follows a configured time division duplex configuration and timing of the physical uplink control channel acknowledgement/negative acknowledgement for an uplink subframe corresponding to a base station on time at downlink follows a frequency division duplex configuration.40. The method of claim 35 , wherein timing of an uplink grant for an uplink subframe corresponding to a base station off time at downlink follows a configured time division duplex configuration and timing of the uplink grant for an uplink subframe corresponding to a base station on time at downlink follows a frequency division duplex configuration.41. A method claim 35 , comprising:receiving a time ...

Подробнее
Номер записи: 36
28-05-2015 дата публикации

SIGNAL DESIGNS FOR D2D SUBFRAMES

Номер: US20150146647A1
Автор: Chatterjee Debdeep, Han Seunghee, Niu Huaning, Xiong Gang
Принадлежит:

Embodiments of the present disclosure describe apparatuses and methods for signal designs for device-to-device (D2D) subframes. Various embodiments may include a UE with a radio transceiver to communicate with another UE via D2D communications. The UE may further include processing circuitry to generate a cyclic prefix (CP) for a first or second symbol of a D2D subframe at an orthogonal frequency division multiplexing (OFDM) resource block or a single-carrier frequency-division multiple access (SC-FDMA) resource block. Other embodiments may be described and/or claimed. 1. A user equipment (UE) , comprising:a radio transceiver to communicate with another UE via device-to-device (D2D) communications; andprocessing circuitry, coupled to the radio transceiver, to generate a cyclic prefix (CP) for a first or second symbol of a D2D subframe at an orthogonal frequency division multiplexing (OFDM) resource block or a single-carrier frequency-division multiple access (SC-FDMA) resource block, wherein the CP has a length greater than 33.33 microseconds.2. The UE of claim 1 , wherein the processing circuitry is further to puncture a first half of a useful symbol length of the first symbol and/or a second half of a useful symbol length of a last symbol of the D2D subframe.3. The UE of claim 1 , wherein the processing circuitry is to use a second half of a useful symbol length of the first symbol claim 1 , generated based on a second half of a useful symbol length of the second symbol claim 1 , as a part of the CP for the second symbol.4. The UE of claim 3 , wherein the processing circuitry is further to puncture an entirety of a last symbol of the D2D subframe claim 3 , or to puncture a first half of the useful symbol length of the first symbol and a second half of a useful symbol length of the last symbol.5. The UE of claim 1 , wherein the processing circuitry is to use a first half of a useful symbol length of the first symbol claim 1 , generated based on a second half of the ...

Подробнее
Номер записи: 37
14-08-2014 дата публикации

MOBILE COMMUNICATION SYSTEM, BASE STATION, AND USER TERMINAL

Номер: US20140226544A1
Автор: Fukuta Noriyoshi, Yamazaki Chiharu
Принадлежит: KYOCERA CORPORATION

In a mobile communication system that employs a FDD scheme, a HeNB (-) and a UE (-) use a pair of a UL CC and a DL CC for radio communication. The HeNB (-) and the UE (-) change the UL CC of the pair of the UL CC and the DL CC to another CC while maintaining the DL CC during execution of the radio communication. 1. A mobile communication system that employs a frequency division duplex scheme , comprising:a user terminal; anda base station that uses at least a pair of uplink and downlink carriers for radio communication with the user terminal, whereinthe base station and the user terminal change the uplink carrier of the pair of uplink and downlink carriers to another carrier during execution of the radio communication.2. The mobile communication system according to claim 1 , whereinthe base station transmits uplink carrier information indicating the other carrier before changing the uplink carrier, andthe user terminal receives the uplink carrier information from the base station.3. The mobile communication system according to claim 2 , whereinthe base station transmits the uplink carrier information into a message specific to each user terminal.4. The mobile communication system according to claim 2 , whereinthe base station transmits the uplink carrier information into an information block common to a plurality of user terminals.5. The mobile communication system according to claim 2 , whereinthe base station transmits the uplink carrier information, and thereafter changes the uplink carrier to the other carrier at a timing decided in advance, andthe user terminal receives the uplink carrier information, and thereafter changes the uplink carrier to the other carrier at the timing decided in advance.6. The mobile communication system according to claim 1 , whereinthe base station transmits timing information indicating a timing at which the uplink carrier is changed, before changing the uplink carrier, andthe user terminal receives the timing information from the ...

Подробнее
Номер записи: 38
09-05-2019 дата публикации

NARROWBAND SERVICE DEPLOYMENT IN WIDEBAND CARRIER GUARD-BAND

Номер: US20190141705A1
Автор: Dalipi Spendim, EVERAERE Dominique, Grövlen Asbjörn, SANDBERG Kenneth, SUI Yutao, Wang Yi-Pin Eric
Принадлежит: Telefonaktiebolaget lM Ericsson (publ)

A wideband carrier (e.g., LTE carrier) is shifted up or down in frequency, within an allocated frequency band, by an integer multiple of the channel raster spacing (e.g., 100 KHz). This reduces the size of the guard band on one side of the carrier, and expands the guard band on the other side. A narrowband carrier (e.g., NB-IoT carrier) is then deployed within the expanded guard band, at or near a frequency such that the transmission is orthogonal to the wideband carrier transmissions, such as by using a shared N frequency grid spacing (e.g. at 100 KHz spacing, and using 15 KHz subcarriers). The narrowband carrier thus maintains orthogonality with the wideband carrier, but has “room” within the expanded guard band to both transmit on a frequency close to the frequency grid spacing, and to boost transmit power (e.g., by 6 dB), while remaining within the spectral mask. The shifted wideband carrier is transparent to wideband UEs, as the frequency shift is an integer multiple of the channel raster spacing. 126-. (canceled)27. A method of providing a narrowband carrier in a guard band of a wideband carrier of a wireless communication network wherein the wideband carrier is transmitted within a spectral mask of an allocated frequency band such that guard bands , on which the wideband carrier does not transmit , occupy the frequencies above and below the wideband carrier and within the spectral mask , comprising:transmitting the narrowband carrier in an expanded guard band at a frequency such that subcarriers of the narrowband carrier, having a same subcarrier spacing as those of the wideband carrier, are within a predetermined distance of the narrowband carrier raster spacing, whereby the narrowband carrier transmission is orthogonal to the wideband carrier transmissions;wherein the wideband carrier is transmitted at a frequency within the allocated frequency band that is shifted from its nominal position at or near the center of the frequency band, in one of a higher or ...

Подробнее
Номер записи: 39
04-06-2015 дата публикации

METHOD FOR SEARCHING FOR A USEFUL SIGNAL IN A MULTIPLEXING BAND

Номер: US20150155960A1
Автор: Artigue Cèdric
Принадлежит:

A method of searching for the presence of a useful signal of predefined spectral width ΔB in a multiplexing band having a spectral width greater than ΔB, includes calculating a frequency signal representative of a power spectral density in the multiplexing band, calculating a non-useful signal by filtering the frequency signal by means of a filter capable of suppressing all or part of signals having a spectral width equal to or smaller than ΔB, calculating a power ratio signal representative of the ratio of the frequency signal to the non-useful signal, and comparing the power ratio signal with a predefined threshold value. The method may be employed using a computer program product, a receiver unit, and/or a station of a digital telecommunications system comprising such a receiver unit. 1. A method of searching for a useful signal in a general signal , said useful signal corresponding to a radioelectric signal having a predefined spectral width ΔB transmitted by a terminal in a multiplexing band having a spectral width greater than ΔB , said general signal corresponding to all the radioelectric signals received in the multiplexing band , the method comprising:generating a frequency signal representative of a power spectral density of the general signal sampled at elementary frequencies of the multiplexing bank;generating a non-useful signal, the generating the non-useful signal including filtering of the frequency signal using a filter to suppress all or part of signals having a spectral width equal to or smaller than ΔB;generating a power ratio signal, representative of a ratio, at each elementary frequency, of the frequency signal to the non-useful signal;comparing the power ratio signal with a defined threshold value; andidentifying an elementary frequency for which said power ratio signal has a local maximum value greater than said threshold value as a central frequency of a useful signal present in the general signal.2. The method of claim 1 , wherein the ...

Подробнее
Номер записи: 40
25-05-2017 дата публикации

Method for Informing Switching Patterns of Half Duplex Communications in LTE

Номер: US20170149552A1
Автор: Amitabha Ghosh, Benny Vejlgaard, Nitin MANGALVEDHE, RAPEEPAT Ratasuk
Принадлежит: NOKIA SOLUTIONS AND NETWORKS OY

A method is provided for transmission control of a user terminal utilizing half-duplex frequency division duplex operation. The method includes defining a transmission qap pattern for at least one user terminal. The transmission gap pattern indicates 1) sub-frames during which the user terminal is to perform uplink transmission, 2) sub-frames during which the user terminal is to expect to perform downlink reception including at least reference symbols for performing downlink tracking, and 3) at least one of a Tx-to-Rx switching sub-frame during which the user terminal is to switch from the uplink transmission to the downlink reception, and a Rx-to-Tx switching sub-frame during which the user terminal is to switch from the downlink reception to the uplink transmission. The transmission qap pattern is provided to the user terminal, and the user terminal is operated according to the transmission qap pattern.

Подробнее
Номер записи: 41
16-05-2019 дата публикации

METHOD AND USER EQUIPMENT FOR PERFORMING MEASUREMENT, AND METHOD AND BASE STATION FOR CONFIGURING MEASUREMENT

Номер: US20190149253A1
Автор: Kim Eunsun, Kim Kijun, Ko Hyunsoo, YOON Sukhyon
Принадлежит:

A received signal strength indicator (RSSI) measurement time resource is provided to a user equipment. RSSI measurement symbol information indicating OFDM symbols from which the UE measures RSSI in a time resource unit for RSSI measurement (hereinafter, an RSSI measurement time resource unit) is provided to the user equipment. The user equipment measures RSSI from the OFDM symbols indicated by the RSSI measurement symbol information in RSSI measurement time resource unit(s). 1. A method of performing measurement by a user equipment (UE) in a wireless communication system , the method comprising:receiving received signal strength indicator (RSSI) measurement symbol information; andmeasuring an RSSI based on the RSSI measurement symbol information in a time resource unit for RSSI measurement (hereinafter, an RSSI measurement time resource unit) based on the RSSI measurement symbol information,wherein the RSSI is measured from orthogonal frequency division multiplexing (OFDM) symbols indicated by the RSSI measurement symbol information in the RSSI measurement time resource unit.2. The method of claim 1 ,wherein the RSSI measurement symbol information indicates one of predefined formats representing RSSI measurement symbol locations.3. The method of claim 1 ,wherein the RSSI measurement symbol information is common to RSSI measurement time resource units within a measurement window.4. The method of claim 3 ,wherein each of the RSSI measurement time resource units consists of a plurality of consecutive OFDM symbols.5. The method of claim 3 , further comprising:receiving information on the measurement window and information on the RSSI measurement time resource units within the measurement window.6. The method of claim 3 ,wherein the measurement window includes a resource of a synchronization signal (SS) block consisting of an SS and a physical broadcast channel.7. A user equipment for performing measurement in a wireless communication system claim 3 , the user equipment ...

Подробнее
Номер записи: 42
11-06-2015 дата публикации

Method and apparatus for transmitting srs in lte tdd system

Номер: US20150163785A1
Автор: Xiaoqiang Li, Yingyang Li
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and apparatus are provided for transmitting and receiving an uplink Sounding Reference Signal (SRS). The method includes determining a number of single-carrier frequency division multiple access (SC-FDMA) symbols in an uplink pilot time slot (UpPTS); receiving index information for a sounding reference signal (SRS); determining an SRS offset, based on the index information; and transmitting the SRS, based on the SRS offset. If the index information includes an integer from 0 to 9, and if the UpPTS includes two SC-FDMA symbols, a first symbol is indicated by SRS offset 0 and a second symbol is indicated by SRS offset 1. If the index information includes an integer from 0 to 9, and if the UpPTS includes one SC-FDMA symbol, a first symbol is indicated by the SRS offset 1.

Подробнее
Номер записи: 43
07-06-2018 дата публикации

RADIO LINK MONITORING

Номер: US20180160450A1
Автор: JHA SATISH C., Koc Ali Taha, Sivanesan Kathiravetpillai, Vannithamby Rath
Принадлежит:

In embodiments, apparatuses, methods, and storage media may be described for monitoring channel quality of a radio link between a secondary evolved NodeB (SeNB) and a user equipment (UE) in a wireless communication network configured for dual connectivity. In embodiments, the UE may generate one or more indications of a channel quality of the SeNB-UE radio link and forward the indication to the SeNB. Based on the indication, the UE may receive a radio resource control (RRC) message from a master eNB (MeNB) related to the SeNB-UE radio link. Other embodiments may be claimed. 120.-. (canceled)21. One or more non-transitory , computer-readable media having instructions that , when executed , cause a user equipment (“UE”) to:identify a first set of parameters for radio link monitoring (“RLM”) of a first cell to be provided by a master evolved node B (“MeNB”) and a second set of parameters for RLM of a second cell to be provided by a secondary evolved node B (“SeNB”), the first set of parameters to indicate a first timer value and a first constant value and the second set of parameters to indicate a second timer value and a second constant value;monitor a link of the first cell based on the first set of parameters; andmonitor a link of the second cell based on the second set of parameters.22. The one or more non-transitory claim 21 , computer-readable media of claim 21 , wherein to monitor the link of the second cell claim 21 , the instructions claim 21 , when executed claim 21 , cause the UE to:determine that a number of received out-of-sync indications equals the second constant; andstart a timer with the second timer value based on said determination that the number equals the second constant.23. The one or more non-transitory claim 22 , computer-readable media of claim 22 , wherein the second set of parameters further indicates a third constant value and the instructions claim 22 , when executed claim 22 , further cause the UE to:determine that a number of received ...

Подробнее
Номер записи: 44
08-06-2017 дата публикации

METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

Номер: US20170164347A1
Автор: Chung Jae Hoon, Han Seung Hee, Lee Hyun Woo, Lee Moon Il, Moon Sungho
Принадлежит:

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method. A method in which a terminal transmits ACK/NACK in a wireless communication system that supports carrier aggregation comprises the following steps: receiving one or more physical downlink shared channels (PDSCHs); and transmitting ACK/NACK for said one or more PDSCHs via a physical uplink control channel (PUCCH). A PUCCH format for transmitting ACK/NACK is selected by taking the type of the carrier in which said one or more PDSCHs are received into account. 114-. (canceled)15. A method for transmitting uplink control information at a User Equipment (UE) in a wireless communication system , the method comprising:detecting one or more Physical Downlink Shared Channels (PDSCHs) in a subframe; andtransmitting ACK/NACK information for the one or more PDSCHs via one of a first Physical Uplink Control Channel (PUCCH) format and a second PUCCH format,wherein if only a single PDSCH is detected on a Primary CC (PCC), the ACK/NACK information is transmitted using the first PUCCH format,wherein if PDSCHs are detected both on the PCC and a secondary CC (SCC), the ACK/NACK information is transmitted using the second PUCCH format.16. The method of claim 15 , wherein the single PDSCH includes a single PDSCH with a corresponding PDCCH claim 15 , or a single PDSCH without a corresponding PDCCH.17. The method of claim 15 , wherein the first PUCCH format carries only one modulation symbol claim 15 , and the second PUCCH format carries 24 modulation symbols.18. The method of claim 17 , wherein claim 17 , for the first PUCCH format claim 17 , the one modulation symbol is spread over 12 subcarriers of a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol using a CAZAC sequence.19. The ...

Подробнее
Номер записи: 45
23-05-2019 дата публикации

SELECTING A NEW RADIO UPLINK RESOURCE TO TRANSMIT A RANDOM ACCESS PROCEDURE COMMUNICATION

Номер: US20190159175A1
Автор: AKKARAKARAN Sony, He Linhai, ISLAM Muhammad Nazmul, Luo Tao, LY Hung Dinh
Принадлежит:

Various aspects directed towards performing a random access procedure are disclosed. In one example, a parameter is identified from a plurality of parameters, and an uplink (UL) resource associated with a random access procedure is selected based on a value associated with the parameter. A random access procedure communication is then transmitted via the selected UL resource. In another example, different parameters are supported by a scheduling entity such that each of the parameters has a corresponding plurality of different potential values. Here, the scheduling entity enables a scheduled entity to select an UL resource to perform a random access procedure based on a value corresponding to a particular one of the parameters. A random access procedure communication is then received from the scheduled entity via the UL resource. 1. A method of wireless communication , comprising:identifying a parameter from a plurality of different parameters, wherein each of the plurality of different parameters has a corresponding plurality of different potential values;selecting an uplink (UL) resource associated with a random access procedure based on a value corresponding to the parameter, wherein the UL resource is in an UL bandwidth part (BWP); andtransmitting a random access procedure communication via the selected UL resource.2. The method of claim 1 , wherein the random access procedure communication is an initial random access procedure communication.3. The method of claim 1 , wherein the parameter is a random access procedure parameter.4. The method of claim 1 , wherein the parameter is a Message 1 parameter associated with transmitting a physical random access channel (PRACH) preamble.5. The method of claim 4 , wherein the parameter is one of a preamble format claim 4 , a number of preambles claim 4 , a backoff indicator claim 4 , a power ramping counter claim 4 , a PRACH received target power claim 4 , a maximum number of PRACH transmissions claim 4 , or a reference ...

Подробнее
Номер записи: 46
24-06-2021 дата публикации

FRONT END ARCHITECTURE FOR SELECTIVELY ADDING EXTERNAL CARRIER AGGREGATION BAND

Номер: US20210194511A1
Автор: Arkiszewski Roman Zbigniew, Chang Jen-Chien, FREED John G., KASNAVI Reza, Strahler Jeffrey Gordon
Принадлежит:

Aspects of this disclosure relate to a front end architecture for selectively adding an external carrier aggregation band. A switch element can connect a radio frequency signal path to an antenna path through a frequency domain multiplexer, such as a diplexer, in a first mode. The switch element can connect the radio frequency path to the antenna path and bypass the frequency domain multiplexer in a second mode. The frequency domain multiplexer can be external to a front end module that include the radio frequency signal path. In the first mode, a front end system can support carrier aggregation with a band associated with circuitry implemented external to the front end module. 1. (canceled)2. A front end system comprising:a power amplifier module including a power amplifier in a signal path, a first output port, a second output port, a transmit/receive port, and an antenna switch connected to the first output port, the second output port, and the transmit/receive port;a filter external to the power amplifier module; anda frequency domain multiplexer external to the power amplifier module, the frequency domain multiplexer including a first port connected to the filter, a second port connected to the second output port of the power amplifier module, and a common port connected to the transmit/receive port of the power amplifier module.3. The front end system of wherein the antenna switch is configured to electrically connect the signal path to the first output port in a first state and to electrically connect the signal path to the second output port in the second state.4. The front end system of wherein the antenna switch is configured to electrically connect the transmit/receive port to the first output port in the second state.5. The front end system of wherein the second state is associated with a carrier aggregation of a first frequency band associated with the signal path and a second frequency band associated with the filter.6. The front end system of further ...

Подробнее
Номер записи: 47
14-06-2018 дата публикации

METHODS AND APPARATUS FOR MULTIPLE USER UPLINK

Номер: US20180167324A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Vermani Sameer
Принадлежит:

A method for wireless communication is provided. The method comprises transmitting a first wireless message comprising a request for a first user terminal to transmit uplink data and an indication of at least one requested operational parameter. The method also comprises receiving a second wireless message from an access point in response to the first wireless message, the second wireless message indicating whether a plurality of user terminals including the first user terminal is selected to transmit uplink data, the second wireless message indicating at least one operational parameter for transmission of uplink data based on the at least one requested operational parameter. 1. A method for wireless communication , comprising:transmitting, by a first user terminal, at a transmission power level, a first wireless message comprising a request for the first user terminal to transmit uplink data, an indication based on at least the transmission power level, and an indication of at least one requested operational parameter; andreceiving by the first user terminal, a second wireless message from an access point in response to the first wireless message, the second wireless message indicating which first user terminals of a plurality of user terminals including the first user terminal is selected to transmit the uplink data, indicating a transmit power for use by the first user terminal to transmit the uplink data, and indicating at least one operational parameter for transmission of the uplink data based on the at least one requested operational parameter.2. The method of claim 1 , wherein the first wireless message comprises a data frame.3. The method of claim 1 , wherein the indication based on at least the transmission power level is a TX power field.4. The method of claim 1 , wherein the at least one requested operational parameter comprises a transmission time for the uplink data.5. The method of claim 1 , wherein the indication based on at least the transmission ...

Подробнее
Номер записи: 48
06-06-2019 дата публикации

METHODS AND APPARATUS FOR MULTIPLE USER UPLINK

Номер: US20190173794A1
Автор: Barriac Gwendolyn, Merlin Simone, Sampath Hemanth, Vermani Sameer
Принадлежит:

Methods and apparatus for multiple user uplink are provided. In one aspect, a method for wireless communication is provided. The method includes receiving a trigger frame from an access point, the trigger frame being transmitted to two or more stations and indicating an uplink transmission opportunity. The trigger frame further includes a request for the two or more stations to concurrently transmit uplink data at a specific time. The method includes transmitting uplink data at the specific time to the access point concurrently with another of the two or more stations transmitting uplink data to the access point. 1. A station for wireless communication comprising:a receiver configured to receive a trigger frame from an access point, the trigger frame being transmitted to the station and to at least another station, the trigger frame indicating an uplink transmission opportunity for the station to transmit a first uplink physical layer convergence protocol (PLCP) protocol data unit (PPDU) at a specific time and concurrently with the at least another station transmitting a second uplink PPDU, the trigger frame further comprising a duration field indicating a same duration of the first uplink PPDU and the second uplink PPDU; anda transmitter configured to transmit the first uplink PPDU at the specific time and with the indicated duration to the access point concurrently with the at least another station transmitting the second uplink PPDU to the access point.2. The apparatus of claim 1 , wherein the specific time is communicated based on a short interframe space (SIFS) or a point interframe space (PIFS) time after the end of the reception of the trigger frame.3. The apparatus of claim 1 , wherein the transmitter is further configured to transmit a clear to send (CTS) message having a scrambling sequence at a time after receiving the trigger frame and before transmitting the first uplink PPDU claim 1 , the scrambling sequence being the same as a scrambling sequence of a ...

Подробнее
Номер записи: 49
18-09-2014 дата публикации

SIMULTANEOUSLY ACCESSING SHARED RESOURCES

Номер: US20140269605A1
Автор: BONTU Chandra Sekhar, Jia Yongkang, Pecen Mark E., Periyalwar Shalini Suresh
Принадлежит: RESEARCH IN MOTION LIMITED

In some implementations, a method in a wireless network includes allocating a radio resource to a plurality of transmitters. The radio resource is configured for simultaneously transmitting and receiving user data with varying transmission delays. User data bursts are received, from the plurality of transmitters, with varying transmission delays transmitted over the allocated radio resource with varying resource identities. 138-. (canceled)39. A method in a wireless network , the method comprising:receiving an allocation of a radio resource for a plurality of radio transmitters, wherein the radio resource is configured for simultaneously transmitting and receiving user data with varying transmission delays; andtransmitting a user data burst using the radio resource and resource identity, wherein user data bursts with varying transmissions delays are transmitted over the allocated radio resource with varying resource identities including the resource identity.40. The method of claim 39 , further comprising:receiving a broadcast of availability of radio resources including the radio resource and associated selection criteria for the plurality of transmitters;selecting one of the radio resources based on the radio resource selection criteria; andassembling a payload with an assigned preamble sequence at an assigned position within the payload.41. The method of claim 40 , wherein the associated selection criteria is based on at least one of received signal power claim 40 , received signal to noise plus interference ratio claim 40 , a location of a transceiver claim 40 , speed of the transceiver claim 40 , or an application descriptor.42. The method of claim 39 , further comprising:receiving information identifying availability of radio resources including the radio resource, associated selection criteria for the plurality of transmitters, and allowed positions within a payload;selecting one of the radio resources based on the radio resource selection criteria; ...

Подробнее
Номер записи: 50
02-07-2015 дата публикации

FREQUENCY HOPPING

Номер: US20150188605A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A communications node operable to communicate with another communications node over a transmission frequency band , the communications node comprising:a receiving circuit configured to receive a parameter which defines the number of sub-bands in the transmission frequency band;a memory configured to store information defining a size of a sub-band; anda resource determination module configured to determine a communication resource based on the size of the sub-band and a frequency hopping sequence; anda transmitter configured to communicate with the another communications node using the determined communication resource,wherein the frequency hopping sequence is a pseudo-random hopping sequence.2. The communications node according to claim 1 , wherein the communications node is a user device (UE) and the another communications node is an eNodeB.3. The communications node according to claim 1 , wherein the communications node is an eNodeB and the another ...

Подробнее
Номер записи: 51
28-06-2018 дата публикации

WIRELESS DEVICE COMMUNICATIONS SYSTEM

Номер: US20180183632A1
Автор: IQBAL Naveed, Zeguine Azzedine
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A device includes circuitry configured to determine feedforward and feedback coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based on previously received signals. The equalizer output is determined by applying the feedforward and feedback coefficients of the AFD-DFE to a received signal, and the feedforward and feedback coefficients of the AFD-DFE are updated based on the equalizer output. 1. A wireless device communications system , comprising:a wireless device comprising a transmitter to transmit an RF signal, anda base station comprising a receiver to receive the RF signal, generate a plurality of signal matrices based on received signals,', 'determine feedforward coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based in part on the signal matrices,', 'generate a plurality of decision matrices based on transformed feedforward coefficients,', 'determine feedback coefficients for the AFD-DFE based in part on the plurality of decision matrices,', 'generate a first matrix having the plurality of signal matrices and the decision matrices,', 'generate a second matrix including the feedforward coefficients and the feedback coefficients of the AFD-DFE,', 'determine an equalizer output as a function of the first matrix and the second matrix such that the function includes the plurality of signal matrices multiplied by the feedback coefficients, and', 'update the feedforward and feedback coefficients of the AFD-DFE based on the equalizer output., 'wherein the wireless device comprises circuitry configured to'}2. The wireless device communications system of claim 1 , wherein the circuitry is further configured to determine the feedforward and feedback coefficients based on a recursive least squares (RLS) calculation.3. The wireless device communications system of claim 2 , wherein the circuitry is further configured to determine the RLS calculation with at least one constraint.4. The wireless device ...

Подробнее
Номер записи: 52
16-07-2015 дата публикации

Communication System with PAPR Management Using Noise-Bearing Subcarriers

Номер: US20150200797A1
Автор: Brombaugh Eric M., MCCALLISTER RONALD DUANE
Принадлежит: CrestCom, Inc.

A communication system () includes a base station () and a number of peak-managed user equipment apparatuses () that simultaneously transmit peak-reduced FDMA communication signals () to the base station (). The communication system () exclusively assigns payload subcarriers () to the apparatuses () and assigns a few noise-bearing subcarriers () for common simultaneous use by all apparatuses (). Each user equipment apparatus () includes a peak reduction section () that distorts an otherwise undistorted modulated communication signal () into a distorted, peak-reduced communication signal () by generating and adding peak-reduction noise () to the undistorted signal (). The peak-reduction noise () is primarily mapped onto the noise-bearing subcarriers () without conforming to an in-band noise constraint and may be mapped onto the assigned payload subcarriers () to the extent permitted by an in-band noise constraint. The peak-reduction noise () is blocked in unassigned payload subcarriers (). 1. A method of reducing signal peaks in a transmitter configured to communicate in a frequency division multiple access (FDMA) communication system wherein multiple transmitters broadcast to a base station using a population of subcarriers , said method comprising:obtaining identities of a plurality of assigned payload subcarriers in said population, unassigned payload subcarriers in said population, and of a noise-bearing subcarrier in said population;transforming user payload data into signals applied to said assigned payload subcarriers to form a modulated FDMA communication signal;clipping said modulated FDMA communication signal in response to a magnitude threshold to form a clipped signal exhibiting energy spread throughout said population of subcarriers;forming a peak-reduced FDMA communication signal in response to said clipped signal, said peak-reduced FDMA communication signal being configured to exhibit greater amounts of energy in each of said assigned payload ...

Подробнее
Номер записи: 53
20-06-2019 дата публикации

FRONT END ARCHITECTURE FOR SELECTIVELY ADDING EXTERNAL CARRIER AGGREGATION BAND

Номер: US20190190548A1
Автор: Arkiszewski Roman Zbigniew, Chang Jen-Chien, FREED John G., KASNAVI Reza, Strahler Jeffrey Gordon
Принадлежит:

Aspects of this disclosure relate to a front end architecture for selectively adding an external carrier aggregation band. A switch element can connect a radio frequency signal path to an antenna path through a frequency domain multiplexer, such as a diplexer, in a first mode. The switch element can connect the radio frequency path to the antenna path and bypass the frequency domain multiplexer in a second mode. The frequency domain multiplexer can be external to a front end module that include the radio frequency signal path. In the first mode, a front end system can support carrier aggregation with a band associated with circuitry implemented external to the front end module. 1. A radio frequency system comprising:a radio frequency signal path;a frequency domain multiplexer; anda switch element configurable into at least a first mode and a second mode, the switch element configured to connect the radio frequency signal path to an antenna path through the frequency domain multiplexer in the first mode, and the switch element configured to connect the radio frequency signal path to the antenna path so as to bypass the frequency domain multiplexer in the second mode.2. The radio frequency system of further comprising a second radio frequency signal path connected to the frequency domain multiplexer claim 1 , the radio frequency system being configured to support carrier aggregation of radio frequency signals associated with the first radio frequency signal path and the second path in the first mode.3. The radio frequency system of further comprising a receive filter connected to the frequency domain multiplexer claim 1 , the switch element being configured to connect the receive filter to the antenna path in the first mode and to decouple the receive filter from the antenna path in the second mode.4. The radio frequency system of further comprising a duplexer connected to the frequency domain multiplexer claim 1 , the switch element being configured to connect the ...

Подробнее
Номер записи: 54
11-06-2020 дата публикации

FREQUENCY HOPPING

Номер: US20200186191A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A method for a user device comprising:synchronizing the user device with a base station based on a synchronization signal transmitted from the base station;receiving information from the base station, the information corresponding to first continuous resource blocks allocated to the user device;communicating with the base station using the first continuous resource blocks starting from a first resource block at a first slot in a first subframe and using second continuous resource blocks starting from a second resource block at a second slot in the first subframe; andcommunicating with the base station using third continuous resource blocks starting from a third resource block at a first slot in a second subframe and using fourth continuous resource blocks starting from a fourth resource block at a second slot in the second subframe,wherein a position of the first resource block is the same as a position of the second resource block in a frequency axis ...

Подробнее
Номер записи: 55
23-07-2015 дата публикации

System and Method for Partial Bandwidth Communication

Номер: US20150207599A1
Автор: Hansen Christopher, Kim Joonsuk, Liu Yong, Ramamurthy Harish
Принадлежит:

A system and method for partial bandwidth communication. The system includes a device that has a transceiver configured to connect to a network, a memory storing an executable program and a processor. The program causes the processor to perform operations including receiving data to be transmitted to second device, determining if the data uses less than a predetermined bandwidth used as a unit for a carrier aggregation, determining a plurality of sub-bands in the predetermined bandwidth, each sub-band including at least one pilot and a plurality of frequency tones, receiving network information from the second device, the network information indicating a preferred sub-band of the sub-bands, assigning one of the sub-bands to the second device based upon the network information, generating a packet including an indication, the indication indicating the assigned sub-band; transmitting the packet to the second device and transmitting the data in the assigned sub-band. 1. A method , comprising:at a transmitting device:receiving data to be transmitted to at least one receiving device;determining if the data uses less than a predetermined bandwidth used as a unit for carrier aggregation;determining a plurality of sub-bands in the predetermined bandwidth, each sub-band including at least one pilot and a plurality of frequency tones;receiving network information from the at least one receiving device, the network information indicating a preferred sub-band of the sub-bands;assigning one of the sub-bands to the at least one receiving device based upon the network information;generating a packet including an indication, the indication indicating the assigned sub-band;transmitting the packet to the receiving device; andtransmitting the data in the assigned sub-band.2. The method of claim 1 , wherein:the at least one receiving device includes four receiving devices,the sub-bands include four sub-bands, andeach of the four receiving devices is assigned to a unique one of the four ...

Подробнее
Номер записи: 56
20-06-2019 дата публикации

Method and Apparatus for Providing and Utilizing a Non-Contention Based Channel in a Wireless Communication System

Номер: US20190191430A1
Автор: Chandra Arty, Chen John S., Terry Stephen E., Wang Jin, Zhang Guodong
Принадлежит: INTERDIGITAL TECHNOLOGY CORPORATION

In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required. 1. A wireless transmit/receive unit (WTRU) comprising a processor and memory , the processor and memory being configured to:receive a first transmission on a downlink control channel, the first transmission on the downlink control channel comprising an indication of first non-contention based (NCB) uplink control channel resources that have been allocated to the WTRU, wherein NCB uplink control channel resources are a combination of time multiplexed, frequency multiplexed, and code multiplexed;transmit first hybrid automatic repeat request (HARQ) feedback using the first NCB uplink control channel resources indicated in the first transmission on the downlink control channel;receive a second transmission on the downlink control channel, the second transmission on the downlink control channel comprising an indication of second NCB uplink control channel resources that have been allocated to the WTRU; andtransmit second HARQ feedback using the second NCB uplink control channel resources indicated in the second transmission on the downlink control channel.2. The WTRU as in claim 1 , wherein NCB uplink control channel resources are further multiplexed using spatial multiplexing.3. The WTRU as in claim 1 , wherein the NCB uplink control channel is configured to utilize a frequency hopping pattern.4. The WTRU as in claim 1 , wherein the processor is configured to further include one or more of a scheduling request or a channel quality measurement with at least ...

Подробнее
Номер записи: 57
22-07-2021 дата публикации

FREQUENCY DIVISION MULTIPLEXING MAPPING OF TRANSMISSION CONFIGURATION INDICATOR STATES TO A CONTROL CHANNEL

Номер: US20210226820A1
Автор: CHENDAMARAI KANNAN Arumugam, KHOSHNEVISAN Mostafa, Luo Tao, Park Sungwoo, Sun Jing, Zhang Xiaoxia
Принадлежит:

Methods, systems, and devices for wireless communications are described. In some systems, a base station may transmit to a user equipment (UE) over a control channel (e.g., a downlink control channel) and the UE may monitor for the control channel in a control resource set (COREST). The control channel and the CORESET may be associated with a set of transmission configuration indicator (TCI) states. The base station and the UE may identify an association between the resources of the CORESET and the set of TCI states based on a frequency division multiplexing (FDM) mapping between the resources of the CORESET and the set of TCI states. In some examples, the association may be a fixed rule at the UE. In other examples, the base station may signal the association to the UE via control signaling. The UE may decode the control channel based on the FDM mapping. 1. A method for wireless communications at a user equipment (UE) , comprising:receiving a configuration message indicating that a control resource set associated with a downlink control channel is associated with a plurality of transmission configuration indicator states;identifying an association between resources of the control resource set and the plurality of transmission configuration indicator states based at least in part on a frequency division multiplexing mapping; anddecoding the downlink control channel based at least in part on the frequency division multiplexing mapping.2. The method of claim 1 , wherein the frequency division multiplexing mapping comprises a first association between a first set of resource element group bundles of the control resource set and a first transmission configuration indicator state of the plurality of transmission configuration indicator states claim 1 , and a second association between a second set of resource element group bundles of the control resource set and a second transmission configuration indicator state of the plurality of transmission configuration indicator ...

Подробнее
Номер записи: 58
02-10-2014 дата публикации

RF Front End Arrangement and Method for Sharing First and Second Antennas by Different Frequency Bands

Номер: US20140293841A1
Автор: ROUSU Seppo Olavi
Принадлежит: BROADCOM CORPORATION

An RF front end arrangement comprises first filtering, second filtering, third filtering, fourth filtering and a switching arrangement. The switching arrangement is configured to selectively connect the filtering to plural antennas such that at a particular time the first and third filtering is connected to a first antenna and the second and fourth filtering is connected to a second antenna. This allows filtering with different frequency response characteristics to be in use simultaneously for the same frequency band. This can reduce the insertion loss associated with a signal path. 1. A radiofrequency (RF) front end arrangement comprising:first filtering for a first frequency band;second filtering for the first frequency band, the second filtering having a frequency response characteristic that is different from a frequency response characteristic of the first filtering;third filtering for a second frequency band;fourth filtering for the second frequency band, the fourth filtering having a frequency response characteristic that is different from a frequency response characteristic of the third filtering; anda switching arrangement configured to selectively connect the filtering to plural antennas such that at a particular time the first and third filtering is connected to a first antenna and the second and fourth filtering is connected to a second antenna.2. The RF front end arrangement according to claim 1 , wherein each of the first and third filtering is duplex filtering and each of the second and fourth filtering is simplex filtering.3. The RF front end arrangement according to claim 1 , wherein each of the first and fourth filtering is duplex filtering and each of the second and third filtering is simplex filtering.4. The RF front end arrangement according to claim 2 , wherein the simplex filtering is configured for signals in the reception direction only.5. The RF front end arrangement according to claim 2 , wherein the duplex filtering is frequency division ...

Подробнее
Номер записи: 59
27-06-2019 дата публикации

FREQUENCY HOPPING

Номер: US20190199397A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A method for an user device comprising:receiving information from a base station, the information indicating a first contiguous resource blocks allocated to the user device;communicating with the base station using the first consecutive resource blocks starting from a first resource block at a first slot in a first subframe and using a second consecutive resource blocks starting from a second resource block at a second slot in the first subframe; andcommunicating with the base station using a third consecutive resource blocks starting from a third resource block at a first slot in a second subframe and using a fourth consecutive resource blocks starting from a fourth resource block at a second slot in the second subframe;wherein a position of the first resource block is the same as a position of the second resource block in a frequency axis and a position of the third resource block is the same as a position of the fourth resource block in the frequency ...

Подробнее
Номер записи: 60
09-10-2014 дата публикации

MULTIPLEXING OF CONTROL AND DATA WITH VARYING POWER OFFSETS IN A SC-FDMA SYSTEM

Номер: US20140301311A1
Автор: Malladi Durga Prasad, Montojo Juan, Zhang Xiaoxia
Принадлежит: QUALCOMM INCORPORATED

Systems and methodologies are described that facilitate multiplexing of control information and data for common transmission in a localized FDM wireless communication system. Localized FDM transmission of control and data channels can be achieved by, for example, multiplexing control information with data and transmitting the control information and data using resources and transmission schemes specified for transmission of the data. To ensure the reliability of control information multiplexed with data, a power offset can be applied to the control information to provide varying protection levels for the control information based on properties of the data resources into which it is embedded in order to maintain a predetermined signal quality for the control information independent of the data resources. 1. A method for transmitting in a wireless communication system , comprising:providing control information;adjusting a modulation coding scheme (MCS) of the control information based at least in part on a determination that data are transmitted with the control information; andtransmitting the control information having the adjusted modulation coding scheme (MCS) and the data.2. The method of claim 1 , further comprising multiplexing the control information and the data.3. The method of claim 2 , wherein multiplexing the control information and the data comprises multiplexing a control channel carrying the control information and a data channel carrying the data.4. The method of claim 2 , wherein multiplexing the control information and the data comprises multiplexing the control information and the data within resources allocation for the data.5. The method of claim 2 , further comprising scrambling the multiplexed control information and the data.6. The method of claim 5 , further comprising modulating the multiplexed control information and the data.7. The method of claim 1 , wherein the control information and the data are transmitted within a frequency band ...

Подробнее
Номер записи: 61
09-10-2014 дата публикации

Data processing methods performed by umts-fdd device

Номер: US20140301429A1
Автор: Jeng-Yi Tsai
Принадлежит: MediaTek Inc

A data processing method performed by a Universal Mobile Telecommunications System Frequency Division Duplexing (UMTS-FDD) device includes at least the following steps: generating a control frame and a data frame, wherein the data frame is spread according to a fixed spreading factor which is not greater than a minimum spreading factor prescribed in a UMTS-FDD Release 99 specification, and the control frame includes a transport format combination indicator (TFCI) data; and transmitting the control frames through an uplink dedicated physical control channel (UL DPCCH) and transmitting the data frames through an uplink dedicated physical data channel (UP DPDCH).

Подробнее
Номер записи: 62
13-08-2015 дата публикации

Systems and methods for mapping virtual radio instances into physical volumes of coherence in distributed antenna wireless systems

Номер: US20150229372A1
Автор: Antonio Forenza, Fadi Saibi, Mario Di Dio, Roger van der Laan, Stephen G. Perlman, Timothy A. Ptiman
Принадлежит: Rearden LLC

Systems and methods are described for mapping Virtual Radio Instances (VRIs) into physical volumes of coherencein a Multiple Antenna System (MAS) with Multi-User (MU) transmissions (“MU-MAS”). These mapping methods enable communications through simultaneous non-interfering data streams in the same frequency band between the MU-MAS and multiple users, within their own volume of coherence. As the users move, their VRIs follow their respective volumes of coherence via teleportation to adjacent MU-MAS networks, thereby eliminating the need for handoffs as in conventional cellular systems and unnecessary control data overhead.

Подробнее
Номер записи: 63
13-08-2015 дата публикации

FREQUENCY DIVISION DUPLEX WIRELESS COMMUNICATION APPARATUS AND METHOD

Номер: US20150230009A1
Автор: CHOI Ku-Young, Kim Hyung-Gon, Park Sung-Chul
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A Frequency Division Duplex (FDD) wireless communication apparatus is provided. The FDD wireless communication apparatus includes a first antenna configured to one of transmit and receive, a second antenna configured to receive, and a switch configured to selectively connect one of the first antenna and the second antenna to a receiver. 1. A Frequency Division Duplex (FDD) wireless communication apparatus comprising:a first antenna configured to one of transmit and receive;a second antenna configured to receive; anda switch configured to selectively connect one of the first antenna and the second antenna to a receiver.2. The FDD wireless communication apparatus of claim 1 , further comprising:a Low Noise Amplifier (LNA) connected between the second antenna and the switch.3. The FDD wireless communication apparatus of claim 1 , wherein a junction among the first antenna claim 1 , a transmitter claim 1 , and the switch is one of combination of a T-junction claim 1 , a transmission Surface Acoustic Wave (SAW) filter claim 1 , and a reception SAW filter claim 1 , a circulator claim 1 , and a duplexer.4. The FDD wireless communication apparatus of claim 2 , further comprising:a duplexer connected among the first antenna, a transmitter, and the switch;a first Band Pass Filter (BPF) connected between the second antenna and the LNA; anda second BPF connected between the switch and the receiver.5. The FDD wireless communication apparatus of claim 1 , further comprising a controller configured to control switching of the switch based on a received signal power level.6. The FDD wireless communication apparatus of claim 5 , wherein the controller connects the first antenna to the receiver through the switch if the received signal power level is greater than or equal to a threshold value claim 5 , and connects the second antenna to the receiver through the switch if the received signal power level is less than the threshold value.7. The FDD wireless communication apparatus of ...

Подробнее
Номер записи: 64
18-07-2019 дата публикации

WAKE UP RECEIVER FRAME

Номер: US20190223104A1
Автор: Azizi Shahrnaz, Bravo Daniel F., Ginsburg Noam, HUANG PO-KAI, Kenney Thomas J., Kristem Vinod
Принадлежит:

This disclosure describes systems, methods, and devices related to wake up receiver (WUR) frequency division multiple access (FDMA) transmission. A device may cause to send a wake up receiver (WUR) beacon frame on a WUR beacon operating channel to one or more station devices. The device may determine a first wake-up frame to be sent on a first WUR operating channel, wherein the first WUR operating channel is associated with one or more frequency division multiple access (FDMA) channels used for transmitting one or more wake-up frames to the one or more station devices. The device may determine to apply padding to the first wake-up frame based on a field included in a header of the first wake-up frame. The device may cause to send the first wake-up frame to a first station device of the one or more station devices. 1. A device , the device comprising processing circuitry coupled to storage , the processing circuitry configured to:cause to send a wake up receiver (WUR) beacon frame on a WUR beacon operating channel to one or more station devices;determine a first wake-up frame to be sent on a first WUR operating channel, wherein the first WUR operating channel is associated with one or more frequency division multiple access (FDMA) channels used for transmitting one or more wake-up frames to the one or more station devices;determine to apply padding to the first wake-up frame based on a field included in a header of the first wake-up frame; andcause to send the first wake-up frame to a first station device of the one or more station devices.2. The device of claim 1 , wherein the field is a legacy signal (L-SIG) field of the header.3. The device of claim 1 , wherein the processing circuitry is further configured to determine to line up padding of the one or more wake-up frames based on an L-SIG length indication.4. The device of claim 1 , wherein the first WUR operating channel is different from the WUR beacon operating channel based on an indication by the first ...

Подробнее
Номер записи: 65
19-08-2021 дата публикации

METHOD AND APPARATUS FOR PROVIDING AND UTILIZING A NON-CONTENTION BASED CHANNEL IN A WIRELESS COMMUNICATION SYSTEM

Номер: US20210258949A1
Автор: Chandra Arty, Chen John S., Terry Stephen E., Wang Jin, Zhang Guodong
Принадлежит: INTERDIGITAL TECHNOLOGY CORPORATION

In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized, The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required. 1. A method implemented by wireless transmit/receive unit (WTRU) for obtaining low latency access to an uplink shared channel , the method comprising:receiving a control message that provides a non-contention based (NCB) uplink control channel allocation, wherein the control message indicates a periodicity, sub-carrier resources, and code information associated with NCB uplink control channel resources allocated to the WTRU for transmitting requests for uplink shared channel resources;transmitting a burst on the NCB uplink control channel resources, wherein presence of the burst on the NCB uplink control channel resources corresponding to the NCB uplink control channel allocation indicates that the WTRU is requesting uplink shared channel resources, wherein hybrid automatic repeat request (HARQ) feedback coincides with the burst transmitted on the NCB uplink control channel resources;monitoring a downlink control channel based on transmitting the burst;receiving a transmission associated with a WTRU identifier on the downlink control channel, wherein the transmission on the downlink control channel comprises an uplink shared channel grant; andtransmitting data on the uplink shared channel in accordance with the uplink shared channel grant.21. The method of clam , further comprising requesting uplink shared channel resources using a random access channel (RACH) after the NCB uplink control channel allocation has been released.31. The method of clam , ...

Подробнее
Номер записи: 66
19-08-2021 дата публикации

Method and apparatus for providing and utilizing a non-contention based channel in a wireless communication system

Номер: US20210258950A1
Автор: Arty Chandra, Guodong Zhang, JIN Wang, John S. Chen, Stephen E. Terry
Принадлежит: InterDigital Technology Corp

In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required.

Подробнее
Номер записи: 67
06-11-2014 дата публикации

METHODS AND SYSTEMS FOR FREQUENCY MULTIPLEXED COMMUNICATION IN DENSE WIRELESS ENVIRONMENTS

Номер: US20140328235A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Tandra Rahul, Tian Bin, Vermani Sameer, Zhou Yan
Принадлежит: QUALCOMM INCORPORATED

Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device. 1. A method of high-efficiency wireless frequency division multiplexing , comprising:receiving a first communication on a first set of wireless frequencies from a first wireless device;receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from a second wireless device; andtransmitting at least one acknowledgment of the first and second communication,the first set and the second set being mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device.2. The method of claim 1 , further comprising exchanging claim 1 , at an access point claim 1 , at least one frame reserving a wireless medium with at least one of a first and second wireless device.3. The method of claim 1 , further comprising transmitting at least one acknowledgment by transmitting a single broadcast acknowledgment on only the first subset of frequencies.4. The method of claim 1 , further comprising transmitting at least one acknowledgment by receiving an acknowledgment request and transmitting the acknowledgment in response to ...

Подробнее
Номер записи: 68
25-08-2016 дата публикации

Short-Range Wireless Controller Filtering and Reporting

Номер: US20160249292A1
Автор: Desai Meghan, Viswanadham Prerepa V., Wang Wei
Принадлежит:

Methods and systems for filter data packets using an advertising data packet content filter are disclosed. An example method involves maintaining, by a Bluetooth device, an advertising data content filter. The advertising data content filter includes at least one content filter having at least one respective delivery mode that specifies when to deliver data packets matching the at least one content filter to a host Bluetooth stack. The method also involves receiving, by the Bluetooth device, a data packet from an advertising Bluetooth device. The method further involves determining, by the Bluetooth device, that content of the data packet matches a particular content filter of the advertising data content filter. And the method involves providing a portion of the data packet to the host Bluetooth stack in accordance with a particular delivery mode corresponding to the particular content filter. 1. A method comprising:maintaining, by a short-range wireless device, multiple advertising data content filters and each advertising data content filter being associated with a corresponding application operating on the short-range wireless device, wherein each advertising data content filter comprises at least one content filter having at least one respective delivery mode that specifies when to deliver data packets matching the at least one content filter to a host stack for the corresponding application;receiving, by the short-range wireless device, a data packet from an advertising short-range wireless device;determining, by the short-range wireless device, that content of the data packet matches a particular content filter of the multiple advertising data content filters; andbased on the content of the data packet matching the particular content filter of the advertising data content filters, delivering a portion of the data packet to the host stack in accordance with a particular delivery mode corresponding to the particular content filter for the corresponding ...

Подробнее
Номер записи: 69
13-11-2014 дата публикации

Method for performing channel sounding in wireless lan system and apparatus

Номер: US20140334420A1
Автор: Hyang Sun YOU, Jong Hyun Park, Yong Ho Seok
Принадлежит: LG ELECTRONICS INC

The present invention relates to a method for performing channel sounding by means of an access point (AP) in a wireless LAN system. The method includes the steps of transmitting a null data packet announcement (NDPA) frame to notify that an NDP is to be transmitted, transmitting the NDP, and receiving a feedback frame from a station (STA). The NDP includes a signal field. The signal field of the NDP is transmitted through two orthogonal frequency division multiplexing (OFDM) symbols. One of the two OFDM symbols is a repeated OFDM symbol signifying that the other is repeated.

Подробнее
Номер записи: 70
23-08-2018 дата публикации

Short-Range Wireless Controller Filtering and Reporting

Номер: US20180242252A1
Автор: Desai Meghan, Viswanadham Prerepa V., Wang Wei
Принадлежит:

Methods and systems for filter data packets using an advertising data packet content filter are disclosed. An example method involves maintaining, by a Bluetooth device, an advertising data content filter. The advertising data content filter includes at least one content filter having at least one respective delivery mode that specifies when to deliver data packets matching the at least one content filter to a host Bluetooth stack. The method also involves receiving, by the Bluetooth device, a data packet from an advertising Bluetooth device. The method further involves determining, by the Bluetooth device, that content of the data packet matches a particular content filter of the advertising data content filter. And the method involves providing a portion of the data packet to the host Bluetooth stack in accordance with a particular delivery mode corresponding to the particular content filter. 1. A method comprising:maintaining, by a short-range wireless device, an advertising data content filter, wherein the advertising data content filter comprises at least one content filter having at least one respective delivery mode that specifies when to deliver data packets matching the at least one content filter to a host stack, wherein the host stack is implemented by a host processor of the short-range wireless device;receiving, by a short-range wireless controller of the short-range wireless device while the host processor of the short-range wireless device is in an idle mode or sleep mode, a data packet from an advertising short-range wireless device;determining, by the short-range wireless device, that content of the data packet matches a particular content filter of the advertising data content filter; andbased on the content of the data packet matching the particular content filter of the advertising data content filter, delivering a portion of the data packet to the host stack in accordance with a particular delivery mode corresponding to the particular content ...

Подробнее
Номер записи: 71
24-08-2017 дата публикации

Methods and systems for frequency multiplexed communication in dense wireless environments

Номер: US20170244476A1
Автор: Bin Tian, Gwendolyn Denise Barriac, Hemanth Sampath, Rahul Tandra, Sameer Vermani, Simone Merlin, Yan Zhou
Принадлежит: Qualcomm Inc

Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device.

Подробнее
Номер записи: 72
10-09-2015 дата публикации

APPARATUSES, METHODS, AND COMPUTER PROGRAMS FOR A RECEIVER AND A TRANSMITTER OF A WIRELESS SYSTEM

Номер: US20150256249A1
Автор: Doetsch Uwe, Fonseca dos Santos André, Schaich Frank, Wild Thorsten
Принадлежит: ALCATEL LUCENT

Embodiments provide apparatuses, methods, and computer programs for a receiver and a transmitter of a wireless system. An apparatus () for a receiver () of a wireless communication system comprises means for receiving () radio signals, which are organized in repetitive radio frames, a radio frame being subdivided in sub-frames. The apparatus () further comprises means for extracting () a first payload data packet from the received radio signals using a single sub-frame of the received radio signals and for extracting a second payload data packet using two or more sub-frames of two or more radio frames. An apparatus () for a transmitter () comprises means for obtaining () information on a subset of radio resources for scheduled and/or non-scheduled transmission. The apparatus () further comprises means for transmitting () radio signals, which are organized in repetitive radio frames, a radio frame being subdivided in sub-frames, the means for transmitting () is operable to transmit a first payload data packet using a single sub-frame of the radio signal and for transmitting a second payload data packet using two or more sub-frames. 1. An apparatus for a receiver of a wireless communication system , the apparatus comprisinga receiver module operable to receive radio signals, which are organized in repetitive radio frames, a radio frame being subdivided in sub-frames; andan extraction module operable to extract a first payload data packet from the received radio signals using a single sub-frame of the received radio signals and for extracting a second payload data packet using two or more sub-frames of two or more radio frames, wherein the extraction module is operable to perform a de-spreading operation on the received radio signals of the two or more radio frames to obtain information on the second payload data packet.2. The apparatus of claim 1 , wherein the extraction module is operable to extract the first payload data packet from the received radio signals using ...

Подробнее
Номер записи: 73
01-09-2016 дата публикации

Method for monitoring pdcch in fdd half-duplex communication and terminal thereof

Номер: US20160254901A1
Автор: Hyangsun YOU, Jonghyun Park, Joonkui Ahn, Suckchel Yang, Yunjung Yi
Принадлежит: LG ELECTRONICS INC

One embodiment of the present description provides a method for monitoring a physical downlink control channel (PDCCH). The method for monitoring a PDCCH can comprise the steps of: performing a frequency division duplex (FDD) half-duplex operation; and determining whether to monitor the PDCCH if discontinuous reception (DRX) is set. Here, when a downlink subframe of a downlink carrier is positioned immediately before an uplink subframe of an uplink carrier, the PDCCH can be monitored in the downlink subframe during an active time.

Подробнее
Номер записи: 74
31-08-2017 дата публикации

PARALLEL TRANSMISSION OF HIGH EFFICIENCY SIGNAL FIELD

Номер: US20170250847A1
Автор: Chen Xiaogang, Li Qinghua, Niu Huaning, Stacey Robert J., Yin Hujun, Zhu Yuan
Принадлежит: Intel Corporation

This disclosure describes systems, and methods related to parallel transmission of high efficiency SIGNAL field in communication networks. A device may generate a high efficiency preamble in accordance with a high efficiency communication standard, the high efficiency preamble including, at least in part, one or more legacy SIGNAL fields, one or more high efficiency SIGNAL fields, and one or more channel training fields. The device may cause to send the one or more channel training fields to one or more first devices. The device may determine one or more spatial channel streams associated with at least one of the one or more first devices, the one or more spatial channel streams includes a first stream and a second stream. The device may partition the at least one of the one or more high efficiency SIGNAL fields into, at least in part, a common part and one or more user-specific parts, the one or more user-specific parts includes a first user-specific part and a second user-specific part. The device may cause to send at least one of the one or more user-specific parts using the one or more spatial channel streams. 1. A device , comprising:at least one memory that stores computer-executable instructions; and generate a high efficiency preamble in accordance with a high efficiency communication standard, the high efficiency preamble including, at least in part, one or more legacy signal fields, one or more high efficiency signal fields, and one or more channel training fields;', 'cause to send the one or more channel training fields to one or more first devices;', 'determine one or more spatial channel streams associated with at least one of the one or more first devices, the one or more spatial channel streams includes a first stream and a second stream;', 'partition the at least one of the one or more high efficiency signal fields into, at least in part, a common part and one or more user-specific parts, the one or more user-specific parts includes a first user- ...

Подробнее
Номер записи: 75
08-09-2016 дата публикации

SIMULTANEOUSLY ACCESSING SHARED RESOURCES

Номер: US20160261389A1
Автор: BONTU Chandra Sekhar, Jia Yongkang, Pecen Mark E., Periyalwar Shalini Suresh
Принадлежит: BlackBerry Limited

In some implementations, a method in a wireless network includes allocating a radio resource to a plurality of transmitters. The radio resource is configured for simultaneously transmitting and receiving user data with varying transmission delays. User data bursts are received, from the plurality of transmitters, with varying transmission delays transmitted over the allocated radio resource with varying resource identities. 1. A method in a wireless network , the method comprising:allocating a radio resource to a plurality of transmitters, wherein the radio resource is configured for simultaneously transmitting and receiving user data with varying transmission delays.2. The method of claim 1 , wherein allocating the radio resource comprises broadcasting availability of the radio resource and associated selection criteria to the plurality of transmitters.3. The method of claim 2 , wherein the selection criteria for selecting the radio resource includes multiple thresholds for the associated selection criteria.4. The method of claim 2 , wherein the associated selection criteria is based on at least one of received signal power claim 2 , received signal to noise plus interference ratio claim 2 , a location of a transceiver claim 2 , speed of the transceiver claim 2 , or an application descriptor.5. The method of claim 4 , wherein the associated selection criteria is the application descriptor claim 4 , and the application descriptor includes at least one of an indication of an expected application packet or a packet session length and a packet or a packet session arrival rate.6. The method of claim 5 , wherein the indication is based on at least one of a mean packet length claim 5 , variance claim 5 , or maximum packet length claim 5 , and the packet or the packet session arrival rate is based on at least one of a mean arrival rate claim 5 , a variance of packet arrival rate claim 5 , or maximum inter-packet arrival time.7. The method of claim 2 , further comprising ...

Подробнее
Номер записи: 76
22-09-2016 дата публикации

High-Capacity FHSS-MA Devices and Methods

Номер: US20160277064A1
Автор: WAXMAN Shai
Принадлежит:

A frequency-hopped spread-spectrum multiple-access (FHSS-MA) wideband transceiver may support frequency-division multiple-access (FDMA) functionality by including a plurality of digital chains corresponding to FHSS-MA physical channels, individually and dynamically compensated for in-phase/quadrature imbalance in the transmit and/or receive portion. A FHSS-MA transceiver supporting FDMA functionality may coordinate FH sequence selection among FHSS physical channels to minimize inter-channel interference while also supporting legacy FHSS-enabled devices (e.g., Bluetooth®). The FHSS-MA transceiver may be incorporated into a wireless bridge device to facilitate low-latency communications over wireless local-area networks (WLANs), wireless wide-area networks (WWANs) or broadcast, with multiple FHSS-enabled devices that may be paired with the wireless bridge device using FHSS-MA channels. The wireless bridge device may enable a FHSS-enabled device to re-pair with a personal device. Such wireless bridge devices may be networked into a wireless bridge network that may increase the number of FHSS-enabled devices that may be accommodated and/or increase coverage range. 1. A frequency-hopped spread-spectrum multiple-access (FHSS-MA) communication apparatus , comprising: an I/Q imbalance correction circuit configured to reduce mismatch between the digitized IF I and Q components; and', 'a mixer configured to down-convert I and Q outputs of the I/Q imbalance correction circuit to zero-IF (ZIF) by mixing the I and Q outputs of the I/Q imbalance correction circuit with a respective frequency hopping waveform corresponding to the respective digital receive chain and distinct from frequency hopping waveforms corresponding to other ones of the plurality of digital receive chains, to produce ZIF I and Q components., 'a plurality of digital receive chains, each digital receive chain coupled to receive a pair of common digitized intermediate-frequency (IF) in-phase (I) and quadrature ( ...

Подробнее
Номер записи: 77
22-08-2019 дата публикации

PHASE TRACKING REFERENCE SIGNAL SYMBOL MAPPING

Номер: US20190260466A1
Автор: AKKARAKARAN Sony, BAI Tianyang, Cezanne Juergen, Li Junyi, Luo Tao, MANOLAKOS Alexandros
Принадлежит:

The present disclosure provides techniques that may be applied, for example, for determining phase tracking reference signal (PT-RS) patterns/configurations. As described herein, PT-RS may be mapped to a symbol based, at least in part, on one or more symbols in which a PT-RS is expected to be punctured due to a collision with at least one of time or frequency resources allocated to another signal or to another wireless device, a MCS, and/or an expected PT-RS density. 1. A method for wireless communications , comprising:determining a slot configuration for a wireless device to use for communication;determining, based on the slot configuration, a phase tracking reference signal (PT-RS) puncturing configuration associated with the wireless device; andselecting a PT-RS configuration for the wireless device based, at least in part, on the slot configuration and the PT-RS puncturing configuration.2. The method of claim 1 , further comprising:receiving one or more PT-RS based on the selected PT-RS configuration, wherein the wireless device is a user equipment (UE).3. The method of claim 1 , further comprising:receiving one or more PT-RS based on the selected PT-RS configuration, wherein the wireless device is a base station.4. The method of claim 1 , further comprising:transmitting one or more PT-RS based on the selected PT-RS configuration, wherein the wireless device is a base station.5. The method of claim 1 , further comprising:transmitting one or more PT-RS based on the selected PT-RS configuration, wherein the wireless device is a user equipment.6. The method of claim 1 , wherein the slot configuration comprises at least one of a channel assignment for one or more subframes claim 1 , a reference signal configuration claim 1 , or PT-RS density within a set of time-frequency resources.7. The method of claim 6 , wherein the PT-RS density is based claim 6 , at least in part on a modulation and coding scheme (MCS) used by the wireless device.8. The method of claim 6 , ...

Подробнее
Номер записи: 78
22-09-2016 дата публикации

Uplink Subframe Shortening in Time-Division Duplex (TDD) Systems

Номер: US20160278117A1
Автор: Henrik Sahlin, Johan FURUSKOG, Qiang Zhang, Stefan Parkvall
Принадлежит: Telefonaktiebolaget LM Ericsson AB

A guard period for switching between uplink and downlink subframes is created by shortening an uplink subframe, i.e., by not transmitting during one or more symbol intervals at the beginning of the subframe interval. A grant message includes signaling indicating when a shortened subframe should be transmitted. An example method is implemented in a first wireless node configured to transmit data in transmit subframes occurring at defined subframe intervals and having a predetermined number of symbol intervals. This example method includes determining ( 1620 ) that a transmit subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, shortening ( 1630 ) transmission of the transmit subframe by not transmitting during a beginning portion of the subframe interval for the transmit subframe and transmitting during the remainder of the subframe interval.

Подробнее
Номер записи: 79
21-09-2017 дата публикации

SIGNAL DESIGNS FOR D2D SUBFRAMES

Номер: US20170273106A1
Автор: Chatterjee Debdeep, Han Seunghee, Niu Huaning, Xiong Gang
Принадлежит:

Embodiments of the present disclosure describe apparatuses and methods for signal designs for device-to-device (D2D) subframes. Various embodiments may include a UE with a radio transceiver to communicate with another UE via D2D communications. The UE may further include processing circuitry to generate a cyclic prefix (CP) for a first or second symbol of a D2D subframe at an orthogonal frequency division multiplexing (OFDM) resource block or a single-carrier frequency-division multiple access (SC-FDMA) resource block. Other embodiments may be described and/or claimed.

Подробнее
Номер записи: 80
06-10-2016 дата публикации

METHODS AND APPARATUS FOR ACKNOWLEDGMENT OF MULTI-USER UPLINK WIRELESS TRANSMISSIONS

Номер: US20160294530A1
Автор: Barriac Gwendolyn Denise, Merlin Simone, Sampath Hemanth, Vermani Sameer
Принадлежит:

Methods and apparatus for acknowledgment of multiple user uplink are provided. In one aspect, a method of wireless communication includes receiving a first wireless message from a first station at least partially concurrently with receiving a second wireless message from a second station, generating a first acknowledgment message in response to receiving the first wireless message, generating a second acknowledgement message in response to receiving the second wireless message, and transmitting the first acknowledgment message to the first station at least partially concurrently with transmitting the second acknowledgement message to the second station. 1. A method of wireless communication , comprising:transmitting, via a first wireless device, a first wireless message to a second wireless device at least partially concurrently with a transmission by a third wireless device of a second wireless message to the second wireless device; andreceiving an acknowledgment message for the first wireless message at least partially concurrently with receiving at least a portion of a second acknowledgment message for the second wireless message.2. The method of claim 1 , further comprising:receiving a clear to transmit message from the second wireless device;decoding the clear to transmit message to determine a time to transmit the first wireless message; andtransmitting the first wireless message at the determined time.3. The method of claim 1 , further comprising transmitting claim 1 , via the first wireless device claim 1 , an acknowledgment policy message indicating delayed block acknowledgments are requested.41. The method of clam claim 1 , further comprising transmitting claim 1 , via the first wireless device claim 1 , a third wireless message to the second wireless device at least partially currently with a transmission by a fourth wireless device of a fourth wireless message transmitted to the second wireless device.5. The method of claim 4 , further comprising ...

Подробнее
Номер записи: 81
10-09-2020 дата публикации

FREQUENCY HOPPING

Номер: US20200287588A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A method for a user device , the method comprising:receiving information from a base station, the information corresponding to first continuous resource blocks allocated to the user device;communicating with the base station using the first continuous resource blocks starting from a first resource block at a first slot in a subframe; andcommunicating with the base station using second continuous resource blocks starting from a second resource block at a second slot in the subframe,wherein the number of the first continuous resource blocks is the same as the number of the second continuous resource blocks,wherein a position of the second resource block in a frequency axis is determined based on A mod B,wherein A is determined by sum of a first value and a second value,wherein B is determined by a third value, the third value indicating an uplink bandwidth size, andwherein the first value indicates a position of the first resource block in the frequency ...

Подробнее
Номер записи: 82
10-09-2020 дата публикации

Apparatus, Method and Computer Program for determining a duplex resource scheme for a localized communication in a mobile communication system

Номер: US20200288477A1
Автор: Ahmad EL ASSAAD, Ernst Zielinski, Joakim Cerwall
Принадлежит: VOLKSWAGEN AG

The present invention relates to an apparatus, a method and a computer program for determining a duplex resource scheme for a localized communication in a mobile communication system, and to a method for a vehicle, which uses the determined resource scheme for the localized communication in the mobile communication system. The method for determining a duplex resource scheme for a localized communication in a mobile communication system comprises obtaining information related to a plurality of planned maneuvers of a plurality of road users, wherein the plurality of planned maneuvers are related to an intersection. The method comprises predicting a plurality of radio resources required for a communication of the plurality of road users at the intersection based on the obtained information related to the plurality of planned maneuvers. The method further comprises determining the duplex resource scheme based on the predicted plurality of radio resources required for the communication of the plurality of road users at the intersection.

Подробнее
Номер записи: 83
18-10-2018 дата публикации

Wireless sc-fdma communications system

Номер: US20180302249A1
Автор: Azzedine Zeguine, Naveed IQBAL
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A device includes circuitry configured to determine feedforward and feedback coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based on previously received signals. The equalizer output is determined by applying the feedforward and feedback coefficients of the AFD-DFE to a received signal, and the feedforward and feedback coefficients of the AFD-DFE are updated based on the equalizer output.

Подробнее
Номер записи: 84
18-10-2018 дата публикации

WIRELESS SC-FDMA COMMUNICATIONS SYSTEM

Номер: US20180302250A1
Автор: IQBAL Naveed, Zeguine Azzedine
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A device includes circuitry configured to determine feedforward and feedback coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based on previously received signals. The equalizer output is determined by applying the feedforward and feedback coefficients of the AFD-DFE to a received signal, and the feedforward and feedback coefficients of the AFD-DFE are updated based on the equalizer output. 1: A wireless device SC-FDMA communications system , comprising:a wireless device comprising a transmitter to transmit an RF signal, anda base station comprising a receiver to receive the RF signal, generate a plurality of signal matrices based on received signals,', 'determine feedforward coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based in part on the signal matrices,', 'generate a plurality of decision matrices based on transformed feedforward coefficients,', 'determine feedback coefficients for the AFD-DFE based in part on the plurality of decision matrices,', 'generate a first matrix having the plurality of signal matrices and the decision matrices,', 'generate a second matrix including the feedforward coefficients and a third matrix including the feedback coefficients of the AFD-DFE,', 'determine an equalizer output as a function of the first matrix, the second matrix and the third matrix such that the function includes adding a first product comprising the plurality of signal matrices premultiplied by a variation of the second matrix and a second product comprising the plurality of decision matrices being premultiplied by a variation of the third matrix, wherein the equalizer output is determined for Spatially-Multiplexed (SM)SC-FDMA signals', 'update the feedforward and feedback coefficients of the AFD-DFE based on the equalizer output,', 'equalize the received signals using the equalizer output, and', 'decode the equalized signals., 'wherein the wireless device comprises circuitry configured to'}2 ...

Подробнее
Номер записи: 85
05-11-2015 дата публикации

FREQUENCY HOPPING

Номер: US20150318963A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A communications node operable to communicate with another communications node via resource blocks , the communications node comprising:a transceiver circuit configured to receive a parameter which defines a resource allocation of contiguous resource blocks;a shift register configured to determine a communication resource by applying a frequency shift to the resource allocation of contiguous resource blocks; andwherein the transceiver circuit is further configured to transmit uplink data to the another communications node using the determined communication resource;wherein the frequency shift is determined based on a frequency hopping function and a number of contiguous resource blocks in a sub-band.2. The communications node according to claim 1 , wherein the communications node is a user equipment (UE) and the another communications node is an eNodeB.3. A communications node operable to communicate with another communications node via resource blocks ...

Подробнее
Номер записи: 86
26-10-2017 дата публикации

Adaptive ul-dl tdd configurations in a heterogneous network

Номер: US20170311350A1
Автор: ALEXEY KHORYAEV, Andrey Chervyakov, DEBDEEP CHATTERJEE, Hong He, JONG-KAE FWU, Mikhail A. Shilov, Sergey Panteleev
Принадлежит: Intel Corp

Technology for a first eNodeB is disclosed. The first eNodeB can decode an uplink-downlink (UL-DL) time-division duplexing (TDD) subframe reconfiguration received from a second eNodeB. The UL-DL TDD subframe reconfiguration can be for the first eNodeB. The first eNodeB can encode the UL-DL TDD subframe reconfiguration received from the second eNodeB for transmission to a plurality of user equipment (UEs).

Подробнее
Номер записи: 87
12-11-2015 дата публикации

METHOD FOR TRANSCEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

Номер: US20150326269A1
Автор: Chung Jaehoon, Kim Jinmin, Ko Hyunsoo
Принадлежит: LG ELECTRONICS INC.

The present invention relates to a method for transceiving a signal in a wireless communication system. A method for transceiving a signal in a wireless communication system according to one embodiment of the present invention comprises the steps of: deducing a channel from a transmission antenna of a transceiver; generating a reference signal by combining the deduced channel and a transmission signal from the transmission antenna; converting the reference signal into an analog signal; receiving a data signal and a self-interference signal by means of a reception antenna of the transceiver; and canceling the self-interference signal from the received data signal by means of the converted reference signal, wherein deducing a channel and combining signals are performed in the digital domain and discarding the self-interference signal is performed in the analog domain. 1. A method of transceiving a signal in a wireless communication system , comprising:estimating a channel through a transmission antenna of a transceiver;generating a reference signal by combining the estimated channel and a transmission signal of the transmission antenna;converting the reference signal into an analog signal;receiving a data signal and a self-interference signal using a reception antenna of the transceiver; andcancelling the self-interference signal from the received data signal using the converted reference signal,wherein the channel estimation and the signal combining are performed before passing through a digital-analog converter (DAC) and wherein the cancellation of the self-interference signal is performed before passing through an analog-digital converter (ADC).2. The method of claim 1 , wherein signal transmission and signal reception of the transceiver are performed simultaneously.3. The method of claim 1 , wherein signal transmission and signal reception of the transceiver are performed using an identical frequency band.4. The method of claim 1 , wherein the transceiver ...

Подробнее
Номер записи: 88
12-11-2015 дата публикации

Small data communications in a wireless communication network

Номер: US20150327301A1
Автор: Marta Martinez Tarradell, Mo-Han Fong, Sangeetha Bangolae
Принадлежит: Intel Corp

Technology for performing small data transmissions at a user equipment (UE) is disclosed. An apparatus of the UE can receive, from an eNodeB, a small data transmission indicator that instructs the UE to establish a fast radio resource control (RRC) connection with the eNodeB. The apparatus of the UE can initiate a random access channel (RACH) procedure in order to establish the fast RRC connection with the eNodeB. The fast RRC connection may not include the establishment of bearers between the UE and the eNodeB. The apparatus of the UE can perform a small data transmission with the eNodeB using the fast RRC connection between the UE and the eNodeB.

Подробнее
Номер записи: 89
03-10-2019 дата публикации

Method and device for transmitting/receiving synchronization signal and system information for terminal in new wireless access network

Номер: US20190306819A1
Автор: Kyujin Park, Woo-Jin Choi
Принадлежит: KT Corp

Provided is a flexible numerology configuration method for an NR. In particular, a method may be provided for transmitting a synchronization signal and system information for a user equipment in a new radio access network. The method may include defining one or more subcarrier spacings to transmit at least one synchronization signal and at least one system information transmission channel in a frequency band of the new radio access network, determining one of the one or more subcarrier spacings to transmit the at least one synchronization signal and the at least one system information transmission channel, and transmitting at least one of the at least one synchronization signal and the at least one system information transmission channel based on the determined subcarrier spacing.

Подробнее
Номер записи: 90
16-11-2017 дата публикации

HETEROGENEOUS WEIGHTED OVERLAP-ADD WINDOWING AND FILTERING FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WAVEFORMS

Номер: US20170331647A1
Автор: ABDELGHAFFAR Muhammad Sayed Khairy, Ji Tingfang, Jiang Jing, PARK Seyong, Soriaga Joseph Binamira, Zeng Wei
Принадлежит:

Techniques for processing of symbols (e.g., orthogonal frequency division multiplexing (OFDM) or single carrier-frequency division multiple access (SC-FDMA) symbols) provide enhanced out-of-band (OOB) suppression of the symbols and also provide reduced inter-symbol interference (ISI) between a symbol and a subsequent symbol. Multiple frequency tones of a symbol may be divided into two or more subsets of tones. For example, subsets of tones associated with a head portion or a tail portion of an OFDM symbol may be processed with a relatively long weighted overlap-add (WOLA) weighting length or filtering length, and a subset of tones associated with a center portion of the OFDM symbol may be processed with a relatively short WOLA weighting length or filtering length. Such heterogeneous processing of tones within a symbol may provide enhanced inter-channel interference (ICI) and improved OOB suppression and also provide reduced ISI for the center tones of the symbol. 1. A method for wireless communication , comprising:identifying a set of tones of a first symbol, a first subset of the set of tones, and a second subset of the set of tones;applying a first type of weighting window to the first subset of the set of tones and a second type of weighting window to the second subset of the set of tones in a weighted overlap and add (WOLA) procedure, the second type of weighting window being longer than the first type of weighting window;obtaining a first transmission waveform for the first symbol based at least in part on the applying; andtransmitting the first transmission waveform.2. The method of claim 1 , wherein the first symbol comprises an orthogonal frequency division multiplexing (OFDM) symbol or a single carrier frequency division multiple access (SC-FDMA) symbol.3. The method of claim 1 , wherein the first subset of the set of tones comprises a center portion of the set of tones and the second subset of the set of tones comprises an edge portion of the set of tones. ...

Подробнее
Номер записи: 91
17-10-2019 дата публикации

SHARED-ANTENNA INTERFACE APPARATUS FOR SIMULTANEOUS TRANSMIT AND RECEIVE

Номер: US20190319681A1
Автор: Agrawal Abhishek, GARG Robin, Jain Sanket, NATARAJAN Arun
Принадлежит: Oregon State University

An apparatus for simultaneous transmit and receive is provided. The apparatus is capable of rejecting or passing transmitter and receiver signals. The apparatus includes: a transmitter; an antenna (e.g., a shared antenna); a receiver including switches controllable by time varying signals; and a quadrature coupler including first, second, third, and fourth ports, wherein the first port is coupled to the transmitter, wherein the second port is coupled to the antenna, and wherein the third and fourth ports are coupled to the receiver. 1. An apparatus comprising:a transmitter;an antenna;a receiver including switches controllable by time varying signals; anda quadrature coupler including first, second, third, and fourth ports, wherein the first port is coupled to the transmitter, wherein the second port is coupled to the antenna, and wherein the third and fourth ports are coupled to the receiver.2. The apparatus of comprises a finite state machine to generate the time varying signals for controlling the switches.3. The apparatus of claim 2 , wherein at least one of the time varying signals is one of:a periodic signal; ora code-modulated signal.4. The apparatus of claim 1 , wherein the first port is an input port claim 1 , wherein the second port is an isolation port claim 1 , wherein the third port is a through port claim 1 , and wherein the fourth port is a coupling port.5. The apparatus of claim 1 , wherein the switches of the receiver are organized into first and second banks claim 1 , wherein the first bank is coupled to the third port claim 1 , and wherein the second bank is coupled to the fourth port claim 1 , and wherein the receiver comprises capacitive devices coupled to the first and second banks.6. The apparatus of comprises:a first impedance coupled to the first port;a second impedance coupled to the second port;a third impedance coupled to the third port; anda forth impedance coupled to the forth port.7. The apparatus of claim 6 , wherein the first claim 6 ...

Подробнее
Номер записи: 92
16-11-2017 дата публикации

Method and terminal device for allocating resources in a plurality of subframes

Номер: US20170332360A1
Автор: Yuichi Morioka
Принадлежит: Sony Corp, Sony Europe Ltd

A method operating a telecommunications system including a base station and plural terminal devices arranged to communicate over a radio interface supporting a downlink shared channel conveying user-plane data from the base station to the terminal devices and a downlink control channel conveying control-plane data from the base station to the terminal devices. The control-plane data conveys information on physical resource allocations for the downlink shared channel for respective of the terminal devices. The radio interface is based on a radio frame structure including plural subframes each including a control region supporting the downlink control channel and a user-plane region supporting the downlink shared channel. The method uses the control region of a first radio subframe to convey an indication of a physical resource allocation for a first terminal device on the shared downlink channel in the user-plane region of a second radio subframe subsequent to the first radio subframe.

Подробнее
Номер записи: 93
24-10-2019 дата публикации

Full-Duplex Communications System

Номер: US20190327067A1
Автор: Cox Charles H.
Принадлежит: Photonic Systems, Inc.

A method of full-duplex cellular communications includes receiving a first signal transmitted by a first cellular device at a base station using a cellular uplink frequency in a cellular frequency band. A second signal is transmitted from the base station to the first cellular device using a cellular downlink frequency in the cellular frequency band simultaneously with the receiving the first signal transmitted by the first cellular device. A third signal is transmitted from the base station to a second cellular device using the cellular uplink frequency in the cellular frequency band simultaneously with the receiving the first signal transmitted by the first cellular device and simultaneously with the transmitting the second signal from the base station to the first cellular device. 1. A method of full-duplex cellular communications , the method comprising:a) receiving at a base station a first signal transmitted by a first cellular device using a cellular uplink frequency in a cellular frequency band;b) transmitting a second signal from the base station to the first cellular device using a cellular downlink frequency in the cellular frequency band simultaneously with the receiving the first signal transmitted by the first cellular device; andc) transmitting a third signal from the base station to a second cellular device using the cellular uplink frequency in the cellular frequency band simultaneously with the receiving the first signal transmitted by the first cellular device and simultaneously with the transmitting the second signal from the base station to the first cellular device.2. The method of full-duplex cellular communications of wherein the receiving the first signal transmitted by the first cellular device to the base station comprises receiving the first signal using a signal generated with a frequency division duplexing (FDD) communication protocol.3. The method of full-duplex cellular communications of wherein the transmitting the third signal from ...

Подробнее
Номер записи: 94
10-12-2015 дата публикации

METHOD AND APPARATUS FOR PROVIDING AND UTILIZING A NON-CONTENTION BASED CHANNEL IN A WIRELESS COMMUNICATION SYSTEM

Номер: US20150358958A1
Автор: Chandra Arty, Chen John S., Terry Stephen E., Wang Jin, Zhang Guodong
Принадлежит: INTERDIGITAL TECHNOLOGY CORPORATION

In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required. 1. A device configured to perform base station functions for at least one wireless transmit receive unit (WTRU) , the device comprising a processor configured to:send a first allocation to a first WTRU, wherein the first allocation is an allocation of a non-contention based (NCB) uplink control channel, the first allocation comprises a configuration for the first WTRU to transmit scheduling requests over the NCB uplink control channel, and the configuration indicates a periodicity allocated to the first WTRU for transmitting scheduling requests on the NCB uplink control channel and indicates which sub-carrier resources of the NCB uplink control channel are to be used by the first WTRU for transmitting the scheduling requests;receive a scheduling request over the NCB uplink control channel in accordance with the first allocation, wherein the transmitted scheduling request comprises a transmission burst, and presence of the transmission burst on NCB uplink channel resources assigned to the first WTRU by the first allocation is indicative of a request for uplink transmission resources by the first WTRU;send a transmission on to the first WTRU via a downlink control channel, wherein the transmission on the downlink control channel is sent to the first WTRU using a identifier assigned to the first WTRU, the transmission on the downlink control channel comprises a second allocation, and the second allocation is an allocation of an uplink shared channel for the ...

Подробнее
Номер записи: 95
29-11-2018 дата публикации

FREQUENCY HOPPING

Номер: US20180343030A1
Автор: Arnott Robert, Awad Yassin Aden
Принадлежит: NEC Corporation

A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency resource. 1. A communications node operable to communicate with another communications node , the communications node comprising:a processor configured to determine a first value; anda transceiver circuit configured to transmit, to the another communications node, information which is related to resource allocation;wherein the processor is further configured to determine at least one communication resource based on the first value and a second value;wherein the transceiver circuit is further configured to receive uplink data from the another communications node using the at least one communication resource; andwherein the second value is determined based on a frequency hopping function multiplied by a size of a sub-band.2. The communications node according to claim 1 , wherein the communications node is a NodeB and the another communications node is a user equipment (UE).3. The communications node according to claim 1 , wherein the information is determined based on ...

Подробнее
Номер записи: 96
08-12-2016 дата публикации

SYSTEM AND METHOD FOR APPLYING ADAPTIVE FREQUENCY-DOMAIN RLS DFE FOR UPLINK SC-FDMA

Номер: US20160359646A1
Автор: IQBAL Naveed, Zeguine Azzedine
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

A device includes circuitry configured to determine feedforward and feedback coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based on previously received signals. The equalizer output is determined by applying the feedforward and feedback coefficients of the AFD-DFE to a received signal, and the feedforward and feedback coefficients of the AFD-DFE are updated based on the equalizer output. 1. A device comprising: determine feedforward and feedback coefficients for an adaptive frequency-domain decision feedback equalizer (AFD-DFE) based on previously received signals,', 'determine an equalizer output by applying the feedforward and feedback coefficients of the AFD-DFE to a received signal, and', 'update the feedforward and feedback coefficients of the AFD-DFE based on the equalizer output., 'circuitry configured to'}2. The device of claim 1 , wherein the circuitry is further configured to determine the feedforward and feedback coefficients based on a recursive least squares (RLS) calculation.3. The device of claim 2 , wherein the circuitry is further configured to determine the RLS calculation with at least one constraint.4. The device of claim 1 , wherein the circuitry is further configured to apply a three-tap AFD-DFE to the received signal.5. The device of claim 1 , wherein the circuitry is further configured to operate in a training mode wherein the feedforward and feedback coefficients of the AFD-DFE are updated based on a training signal.6. The device of claim 5 , wherein the circuitry is further configured to update the feedforward and feedback coefficients of the AFD-DFE based on a difference between the training signal and the equalizer output.7. The device of claim 6 , wherein the circuitry is further configured to determine that convergence has occurred when the difference between the training signal and the equalizer output is less than a predetermined threshold.8. The device of claim 1 , wherein the circuitry is ...

Подробнее
Номер записи: 97
07-12-2017 дата публикации

Method for reporting channel state information, method for supporting same, and apparatus for said methods

Номер: US20170353282A1
Автор: Hanbyul Seo, Illsoo Sohn, Jonghyun Park, Kijun KIM
Принадлежит: LG ELECTRONICS INC

A method for channel measurement based on a channel state information (CSI)-reference signal (RS) in a wireless communication system including receiving, by a terminal, CSI-RS resource configuration information through higher layer signaling and receiving, by the terminal, the CSI-RS according to the CSI-RS resource configuration information; wherein the CSI-RS resource configuration information includes information on one or more cell specific-RS (CRS) antenna ports assumed to be quasi-co-located with one or more antenna ports used to transmit the CSI-RS, and deriving, by the terminal, CSI based on the CSI-RS using the information on the one or more CRS antenna ports.

Подробнее
Номер записи: 98
21-12-2017 дата публикации

Method and Apparatus for Providing and Utilizing a Non-Contention Based Channel in a Wireless Communication System

Номер: US20170367089A1
Автор: Chandra Arty, Chen John S., Terry Stephen E., Wang Jin, Zhang Guodong
Принадлежит: INTERDIGITAL TECHNOLOGY CORPORATION

In a wireless communication system comprising at least one evolved Node-B (eNB) and a plurality of wireless transmit/receive units (WTRUs), a non-contention based (NCB) channel is established, maintained, and utilized. The NCB channel is allocated for use by one or more WTRUs in the system for utilization in a variety of functions, and the allocation is communicated to the WTRUs. The wireless communication system analyzes the allocation of the NCB channel as required, and the NCB channel is reallocated as required. 1. A method implemented by a wireless transmit/receive unit (WTRU) , the method comprising:determining that there is uplink data to be transmitted;transmitting a scheduling request over a non-contention based (NCB) uplink control channel based on determining that there is uplink data to be transmitted;monitoring a downlink control channel based on transmitting the scheduling request over the NCB uplink control channel;detecting that a transmission on the downlink control channel is intended for the WTRU based on a WTRU identifier indicated in the transmission on the downlink control channel, wherein the transmission on the downlink control channel comprises an allocation of an uplink shared channel; andtransmitting the uplink data over the uplink shared channel in accordance with the allocation of the uplink shared channel received on the downlink control channel.2. The method of claim 1 , wherein the NCB uplink control channel is implemented in a single carrier frequency-division multiple-access (SC-FDMA) wireless communication system.3. The method of claim 1 , further comprising receiving an allocation of the NCB uplink control channel from an evolved Node B (eNB) claim 1 , wherein the allocation of the NCB uplink control channel comprises a configuration for transmitting scheduling requests over the NCB uplink control channel claim 1 , and the configuration indicates a periodicity assigned to the WTRU for transmitting scheduling requests on the NCB ...

Подробнее
Номер записи: 99
29-12-2016 дата публикации

Method and apparatus for aggregating carriers in wireless communication systems

Номер: US20160381689A1
Автор: Bonghoe Kim, Dongyoun Seo, Hanbyul Seo, Joonkui Ahn, Seungmin Lee, Suckchel Yang, Yunjung Yi
Принадлежит: LG ELECTRONICS INC

The present invention relates to a method and apparatus for aggregating carriers in wireless communication systems. In the method, a first carrier is set up, and a second carrier is added in addition to the first carrier. In addition, the first carrier is a time division duplex (TDD) carrier for which an uplink subframe and a downlink subframe are positioned at different times in a frame, and the second carrier is a carrier only for a downlink that consists of downlink subframes.

Подробнее
Номер записи: 100