公开(公告)号：US20240297703A1

公开(公告)日：2024-09-05

申请号：US18434611

申请日：2024-02-06

Applicant: QUALCOMM Incorporated

Inventor： Lin YANG ,  Bin TIAN ,  Jialing Li CHEN ,  Sameer VERMANI

IPC: H04B7/06 ,  H04B7/0417 ,  H04L25/02

CPC classification number: H04B7/066 ,  H04B7/0417 ,  H04L25/0204 ,  H04L25/0228

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for techniques for reducing feedback information in an extremely high throughput (EHT) wireless local area network (WLAN). A receiving device (beamformee), such as a station (STA), may receive a sounding signal from a transmitting device (beamformer), such as an access point (AP), and transmit channel feedback. The receiving device may transmit the channel feedback as part of a reduced compressed beamforming feedback (CBF) operation that includes determining a first set of channel characteristics. The receiving device may select a subset of the first set of channel characteristics and determine a set of differential characteristics based on the subset. The transmitting device may then transmit the sets of characteristics as reduced CBF to the transmitting device. The transmitting device may determine a channel estimation for beamformed signaling based on the reduced CBF.

公开(公告)号：US20240243793A1

公开(公告)日：2024-07-18

申请号：US18014683

申请日：2022-12-23

Applicant: Altiostar Networks Inc.

Inventor： Raghavendra Ramakrishna ,  Ronak Lalwala ,  VIvek Jha

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/066

Abstract: In general, the current subject matter relates to transmission of channel state information reference signals (CSI RSs). In some implementations, a message can be received at a radio unit (RU) of a base station in a wireless communication system. The message can include channel state information reference signal (CSI RS) configuration information that the RU is configured to use in generating a CSI RS for transmission to a user equipment (UE). The CSI RS configuration information can include a plurality of parameters including a bandwidth for CSI RS transmission, amplitude scaling, and a scrambling identity (ID).

公开(公告)号：US12021766B2

公开(公告)日：2024-06-25

申请号：US18307695

申请日：2023-04-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Lei Huang ,  Hong Cheng Michael Sim ,  Yoshio Urabe

IPC: H04L5/00 ,  H04B7/0404 ,  H04B7/0452 ,  H04B7/06 ,  H04L25/02 ,  H04W72/542 ,  H04W84/12 ,  H04W16/28 ,  H04W72/044 ,  H04W72/0453

CPC classification number: H04L5/0023 ,  H04B7/0404 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0632 ,  H04B7/0639 ,  H04L5/0028 ,  H04L5/006 ,  H04L5/0091 ,  H04L25/0224 ,  H04W72/542 ,  H04W84/12 ,  H04B7/0623 ,  H04B7/0634 ,  H04B7/065 ,  H04B7/066 ,  H04L5/0048 ,  H04W16/28 ,  H04W72/0453 ,  H04W72/046

Abstract: A communication method of the present disclosure comprises transmitting a sounding frame comprising a training signal; and receiving a first feedback frame from a communication partner device, the first feedback frame comprising first beamforming feedback information, wherein the first feedback frame is transmitted together with at least one second feedback frame by multiuser transmission.

公开(公告)号：US11979843B2

公开(公告)日：2024-05-07

申请号：US16808200

申请日：2020-03-03

Applicant: QUALCOMM INCORPORATED

Inventor： Kaushik Chakraborty ,  Tao Luo ,  Xiaoxia Zhang ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Sumeeth Nagaraja ,  Wooseok Nam

IPC: H04L1/00 ,  H04J11/00 ,  H04L1/1607 ,  H04L5/00 ,  H04W56/00 ,  H04B7/06 ,  H04B7/212 ,  H04B7/26 ,  H04L27/26 ,  H04W88/16

CPC classification number: H04W56/001 ,  H04J11/0053 ,  H04L1/00 ,  H04L1/1692 ,  H04L5/0028 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0073 ,  H04L5/0082 ,  H04B7/0617 ,  H04B7/066 ,  H04B7/212 ,  H04B7/2628 ,  H04L5/0023 ,  H04L27/261 ,  H04W88/16

Abstract: Wireless communications systems and methods related to synchronization signal (SS) transmission coordination among base stations (BSs) and restricted SS measurements at user equipments (UEs) are provided. A first BS transmits a first SS burst in a first SS transmission period of a plurality of SS transmission periods. The first SS transmission period is designated to the first BS. A second SS transmission period of the plurality of SS transmission periods is designated to a second BS. The first SS transmission period and the second SS transmission period are different. The first BS receives, from a UE, a first signal in synchronization with the first SS burst. The first signal includes a SS measurement of the first SS burst.

公开(公告)号：US11910288B2

公开(公告)日：2024-02-20

申请号：US17354637

申请日：2021-06-22

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Tetsuya Yamamoto ,  Hidetoshi Suzuki ,  Ayako Horiuchi

IPC: H04L27/26 ,  H04W4/70 ,  H04L5/00 ,  H04B7/06 ,  H04W72/20 ,  H04J13/00 ,  H04J13/18 ,  H04L1/08

CPC classification number: H04W4/70 ,  H04B7/066 ,  H04J13/004 ,  H04J13/18 ,  H04L1/08 ,  H04L5/001 ,  H04L5/0051 ,  H04L5/0062 ,  H04L27/2602 ,  H04L27/26035 ,  H04L27/2643 ,  H04W72/20

Abstract: A repeater generates repetition signals by repeating an uplink signal over a plurality of subframes. If the plurality of subframes do not include a transmission candidate subframe of a sounding reference signal used to measure uplink reception quality, a controller sets a first transmission format to all the plurality of subframes, and if the plurality of subframes include the transmission candidate subframe, the controller sets a second transmission format to all the plurality of subframes. A transmitter transmits the repetition signals using the set transmission format.

公开(公告)号：US20240014871A1

公开(公告)日：2024-01-11

申请号：US18063576

申请日：2022-12-08

Applicant: Cisco Technology, Inc.

Inventor： Ardalan ALIZADEH ,  Peiman AMINI ,  Matthew A. SILVERMAN ,  Laurent A. PIERRUGUES

IPC: H04B7/06

CPC classification number: H04B7/0626 ,  H04B7/066

Abstract: Techniques for enhanced wireless sensing or ranging are provided. First and second channel state information (CSI) data, for a first and second link of a plurality of links in a multi-link operation (MLO) system, is collected. A set of channel parameters is estimated, based on the second CSI data, using a channel propagation model. First predicted CSI data for the first link is generated based on the estimated set of channel parameters. The first CSI data is calibrated based on the first predicted CSI data, comprising determining at least one of an amplitude difference or a phase difference between the first CSI data and the first predicted CSI data. Aggregated CSI data is generated based on the calibrated first CSI data and the second CSI data, and at least one of wireless sensing or wireless ranging is performed based on the aggregated CSI data.

公开(公告)号：US11778577B2

公开(公告)日：2023-10-03

申请号：US17389091

申请日：2021-07-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Anil Agiwal ,  Anshuman Nigam

IPC: H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04B7/06 ,  H04B7/08 ,  H04W24/02 ,  H04W88/06 ,  H04W72/0446

CPC classification number: H04W56/0015 ,  H04B7/066 ,  H04B7/0617 ,  H04B7/086 ,  H04L5/001 ,  H04L5/0091 ,  H04L27/2692 ,  H04W24/02 ,  H04W56/001 ,  H04L5/0048 ,  H04W72/0446 ,  H04W88/06

Abstract: A method and system for acquiring mmWave carrier in a wireless communication network is disclosed. In one embodiment, an MS acquires a low frequency carrier and then acquires the high frequency carrier. Since the low frequency carrier and the high frequency carrier are transmitted by same BS, the BS provides assistance information on the acquired low frequency carrier to the MS to acquire a synchronization signal which is transmitted on a high frequency carrier using beamforming. The assistance information includes synchronization signal beam time slots, synchronization signal beams which the MS needs to search, beam ID and so on. Based on the assistance information, the MS monitors the high frequency carrier to search and acquire the synchronization beam signal transmitted on the high frequency carrier. The MS determines the beam ID of the received synchronization beam signal and reports to the BS on the low frequency carrier.

公开(公告)号：US20190089497A1

公开(公告)日：2019-03-21

申请号：US16082529

申请日：2017-02-08

Applicant: CHINA ACADEMY OF TELECOMUNICATIONS TECHNOLOGY

Inventor： Hui LI ,  Qiubin GAO ,  Runhua CHEN ,  Rakesh TAMRAKAR ,  Wenhong CHEN

IPC: H04L5/00 ,  H04B7/0456 ,  H04B7/06

CPC classification number: H04L5/005 ,  H04B7/00 ,  H04B7/0473 ,  H04B7/0626 ,  H04B7/066 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0051 ,  H04L5/006

Abstract: The present disclosure provides a reference signal mapping method and a reference signal mapping device. An N-port reference signal pattern is acquired in accordance with a 4-port or 8-port reference signal pattern, and N is an integer greater than 16. The N-port reference signal pattern includes an 18-port, 20-port, 24-port, 28-port or 32-port reference signal pattern. In the case of mapping a reference signal, RE positions to which a CSI-RS is mapped are determined in accordance with the N-port reference signal pattern, and resource mapping is performed on the CSI-RS in accordance with the RE positions, so as to map more-than-16-port CSI-RS, thereby to transmit the more-than-16-port CSI-RS.

公开(公告)号：US10085165B2

公开(公告)日：2018-09-25

申请号：US14797095

申请日：2015-07-11

Applicant: Comcast Cable Communications, LLC

Inventor： Esmael Hejazi Dinan

IPC: H04W24/10 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04W24/08 ,  H04J11/00

CPC classification number: H04W24/10 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/066 ,  H04J11/0053 ,  H04L5/00 ,  H04L5/0032 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0073 ,  H04W24/08 ,  H04W72/042

Abstract: A wireless device receives messages indicating CSI measurement resources of cells belonging to at least two base stations or belonging to at least two sectors of a base station. The wireless device measures CSI employing at least CSI measurement resources of the cells. The wireless device quantizes the measured CSI jointly across cells and encodes and transmits the jointly quantized CSI. The wireless device receives a resource assignment for data packet(s). The wireless device receives signals carrying the data packets from multiple cells.

公开(公告)号：US09985769B2

公开(公告)日：2018-05-29

申请号：US14801191

申请日：2015-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Dong Wook Roh ,  Bong Hoe Kim ,  Joon Kui Ahn ,  Yu Jin Noh ,  Dong Youn Seo ,  Ki Jun Kim

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/02 ,  H04W72/08 ,  H04B7/04 ,  H04L1/00 ,  H04B7/06 ,  H04L27/26 ,  H04B7/0417

CPC classification number: H04L5/0057 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/066 ,  H04L1/0026 ,  H04L1/0029 ,  H04L5/001 ,  H04L27/2601 ,  H04W72/02 ,  H04W72/0413 ,  H04W72/085

Abstract: A method for generating a channel quality indicator (CQI) in a mobile communication system is presented. The method includes grouping a number of subcarriers to form at least one channel quality indicator subband for generating a channel quality indicator, and generating a channel quality indicator in each channel quality indicator subband, wherein a size of each channel quality indicator subband is dependent on a system bandwidth value and is an integer multiple of a downlink frequency resource unit size, wherein the downlink frequency resource unit size is prescribed according to the system bandwidth value.