公开(公告)号：US20240121071A1

公开(公告)日：2024-04-11

申请号：US18545998

申请日：2023-12-19

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

发明人： Oghenekome Oteri ,  Hanqing Lou ,  Li Hsiang Sun ,  Alphan Sahin ,  Robert L. Olesen ,  Xiaofei Wang ,  Rui Yang

IPC分类号： H04L5/14 ,  H04W72/12 ,  H04W74/08

CPC分类号： H04L5/14 ,  H04W72/12 ,  H04W74/0816 ,  H04W84/12

摘要： Methods and apparatuses are described herein for multiple access schemes for Wireless Local Area Network (WLAN) with full-duplex radios. For example, an access point (AP), in response to receiving a request to send (RTS) from a first station (STA), may transmit a full-duplex clear to send (FD CTS) to the first STA and a full-duplex request to send (FD RTS) to a second STA. In response to transmitting the FD RTS to the second STA, the AP may receive a clear to send (CTS) from the second STA. The AP may transmit, to both the first STA and the second STA, a FD trigger frame that includes scheduling information to enables FD communication with the first STA for uplink (UL) data and the second STA for downlink (DL) data at a same time. The scheduling information may include timing information and channel information for the FD communication.

公开(公告)号：US11949471B2

公开(公告)日：2024-04-02

申请号：US17568367

申请日：2022-01-04

申请人： InterDigital Patent Holdings, Inc.

发明人： Hanqing Lou ,  Oghenekome Oteri ,  Pengfei Xia ,  Robert Olesen

IPC分类号： H04L27/26 ,  H04B7/0452 ,  H04B7/06 ,  H04L1/06 ,  H04L5/00 ,  H04B7/024 ,  H04W84/12

CPC分类号： H04B7/0452 ,  H04B7/0617 ,  H04L1/0612 ,  H04L1/0681 ,  H04L5/0094 ,  H04L27/26025 ,  H04L27/2666 ,  H04B7/024 ,  H04L5/0048 ,  H04W84/12

摘要： A method performed by a STA may comprise transmitting an HE LTF of a data unit. The HE LTF may have a number of symbols based on a number of space-time streams utilized for the data unit. The HE LTF may be transmitted on a subset of subcarriers of a 20 MHz channel, a 40 MHz channel or an 80 MHz channel.

公开(公告)号：US20240107537A1

公开(公告)日：2024-03-28

申请号：US18523370

申请日：2023-11-29

申请人： InterDigital Patent Holdings, Inc.

发明人： Oghenekome Oteri ,  Hanqing Lou ,  Li-Hsiang Sun ,  Xiaofei Wang ,  Alphan Sahin ,  Rui Yang ,  Frank LaSita

IPC分类号： H04W72/20

CPC分类号： H04W72/20 ,  H04W84/12

摘要： A method of multi-access point (multi-AP) communication performed by a wireless transmit/receive unit (WTRU) comprises: receiving a first trigger frame from a first access point (AP) of a plurality of APs, the first trigger frame comprising first information; receiving a second trigger frame from a second AP of the plurality of APs at a predetermined time duration after receiving the first trigger frame, the second trigger frame also comprising the first information of the first trigger frame; generating a synchronization frame based on the first trigger frame and the second trigger frame, the synchronization frame comprising synchronization information; transmitting the synchronization frame to at least the first AP and the second AP; and receiving a data transmission based on the synchronization information from each of the first AP and the second AP.

公开(公告)号：US20240089866A1

公开(公告)日：2024-03-14

申请号：US18307965

申请日：2023-04-27

申请人： InterDigital Patent Holdings, Inc.

发明人： Oghenekome Oteri ,  Pengfei Xia ,  Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Robert Olesen ,  Nirav B Shah ,  Frank LaSita

IPC分类号： H04W52/24 ,  H04W52/12 ,  H04W74/08

CPC分类号： H04W52/243 ,  H04W52/12 ,  H04W74/0808 ,  H04W84/12

摘要： Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.

公开(公告)号：US11916622B2

公开(公告)日：2024-02-27

申请号：US17699828

申请日：2022-03-21

申请人： InterDigital Patent Holdings, Inc.

发明人： Hanqing Lou ,  Li-Hsiang Sun ,  Oghenekome Oteri ,  Xiaofei Wang ,  Rui Yang

IPC分类号： H04B7/0452 ,  H04B7/0417

CPC分类号： H04B7/0417 ,  H04B7/0452

摘要： Systems, methods, and devices for beamforming (BF) training are disclosed. In some examples, a receiver is configured to receive sector sweep (SSW) training frames from an initiator device that each indicate an antenna sector of the initiator device. A transmitter is configured to transmit sector sweep (SSW) training frames to the initiator device that indicate a best received antenna sector of the initiator device. The receiver receives a sector sweep feedback (SSW FB) frame from the initiator device, and the transmitter transmits transmit a sector sweep acknowledgement (SSW ACK) frame to the initiator device that indicates an antenna sector of the initiator device that is different from the antenna sector indicated by the SSW FB frame, if the SSW FB frame was best received by an antenna not corresponding to the best received antenna sector of the initiator device.

公开(公告)号：US11910210B2

公开(公告)日：2024-02-20

申请号：US17235599

申请日：2021-04-20

申请人： InterDigital Patent Holdings, Inc.

发明人： Oghenekome Oteri ,  Hanging Lou ,  Nirav B. Shah ,  Xiaofei Wang ,  Rui Yang ,  Guodong Zhang ,  Frank La Sita ,  Robert L. Olesen

IPC分类号： H04W24/08 ,  H04W52/34 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12 ,  H04J11/00

CPC分类号： H04W24/08 ,  H04J11/00 ,  H04W52/34 ,  H04W74/006 ,  H04W74/0808 ,  H04W84/12

摘要： Device, systems, and/or techniques for using sub-channel signaling information between an access point and a first station are disclosed. An uplink trigger sent from the access point to the first station may be received. A map may be transmitted from the first station indicating at least one sub-channel that is available for spatial sharing by a second station. The first station may receive an acknowledgement from the access point that data was transmitted from the second station on the at least one sub-channel and/or received by the at least one access point. An OFDMA transmission having a sub-channel/sub-band available for transmitting data may be determined. An energy in the sub-channel/sub-band may be measured and/or compared to a dynamic and/or static threshold. Whether a sub-channel/sub-band is free or busy may be determined for example based on if the measured energy is, or is not, greater than the threshold.

公开(公告)号：US11901981B2

公开(公告)日：2024-02-13

申请号：US18074861

申请日：2022-12-05

申请人： InterDigital Patent Holdings, Inc.

发明人： Oghenekome Oteri ,  Rui Yang ,  Alphan Sahin ,  Hanqing Lou ,  Li Hsiang Sun

IPC分类号： H04B7/0456 ,  H04B7/06 ,  H04W72/542 ,  H04B7/0417 ,  H04B7/0426 ,  H04L25/02

CPC分类号： H04B7/0478 ,  H04B7/043 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04L25/0204 ,  H04W72/542

摘要： A method implemented by an apparatus having multiple antennas includes determining information that is associated with a baseband channel. The information indicating any of: measurement information and channel information. The apparatus transmits a signal for requesting baseband beam tracking. The signal transmission is based on a determination that system performance is degraded in a beamforming transmission and re-estimation of the baseband channel is part of a current link adaptation procedure.

公开(公告)号：US20230422303A1

公开(公告)日：2023-12-28

申请号：US18462580

申请日：2023-09-07

申请人： InterDigital Patent Holdings, Inc.

发明人： Hanqing Lou ,  Guodong Zhang ,  Xiaofei Wang ,  Juan Fang ,  Oghenekome Oteri ,  Pengfei Xia ,  Monisha Ghosh ,  Robert L. Olesen

IPC分类号： H04W74/08 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1867 ,  H04L5/00 ,  H04L1/16 ,  H04W72/0453

CPC分类号： H04W74/0816 ,  H04L1/0026 ,  H04L1/1664 ,  H04L1/1685 ,  H04L1/1887 ,  H04L5/0055 ,  H04L1/0003 ,  H04L1/16 ,  H04W72/0453 ,  H04L1/1671 ,  H04W84/12

摘要： A station may receive a frame transmitted to a plurality of STAs. The frame may indicate a first frequency resource allocated for the STA and a second frequency resource allocated for another STA of the plurality of STAs. The STA may transmit a data frame using the first frequency resource and receive an acknowledgement frame that acknowledges receipt of the data frame. The STA may receive a MU RTS frame transmitted to the plurality of STAs and may subsequently transmit a CTS frame in response to receipt of the MU RTS frame. The RTS/CTS transmissions may occur prior to transmission of the data frame.

公开(公告)号：US11849392B2

公开(公告)日：2023-12-19

申请号：US16610994

申请日：2018-05-07

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

发明人： Hanqing Lou ,  Xiaofei Wang ,  Oghenekome Oteri ,  Alphan Sahin ,  Li-Hsiang Sun ,  Rui Yang

IPC分类号： H04W52/02 ,  H04W28/16 ,  H04W84/12

CPC分类号： H04W52/0216 ,  H04W28/16 ,  H04W84/12

摘要： Procedures and mechanisms for narrowband multi-channel transmission for wakeup radio (WUR) operation are disclosed. A station (STA) operating in WUR mode may have its a primary connectivity radio (PCR) turned off and its WUR turned and operating according to previously negotiated WUR operating parameters. The STA may monitor, for WUR beacons and frames over a first WUR channel, and determine that the first WUR channel does not support reliable transmission based on no beacons being received within a first duration. The STA may turn off the WUR, and turn on the PCR to send a first short WUR frame including a wakeup reason, and receive a second short WUR frame with a WUR channel assignment. The STA may turn off the PCR, turn on the WUR, and monitor for WUR signals on a second WUR channel according to the WUR channel assignment and the previously negotiated WUR operating parameters.

公开(公告)号：US20230275642A1

公开(公告)日：2023-08-31

申请号：US18195135

申请日：2023-05-09

申请人： InterDigital Patent Holdings, Inc.

发明人： Oghenekome Oteri ,  Hanqing Lou ,  Alphan Sahin ,  Rui Yang ,  Cen Lin ,  Xiaofei Wang ,  Li Hsiang Sun

IPC分类号： H04B7/06

CPC分类号： H04B7/0695 ,  H04B7/0645 ,  H04B7/0697 ,  H04B7/0636

摘要： Systems and methods for multidimensional beam refinement procedures and signaling for millimeter wave WLANs. In some embodiments, there are multi-dimensional enhanced beam refinement protocol MAC and PHY frame designs that extend the MAC packet and the PPDU format with or without backwards compatibility. The multiple dimensions may be supported jointly or separately. In other embodiments, the increased data signaled in the eBRP frame designs may be more efficiently signaled with reduced BRP frame sizes, such as through a training type dependent BRP minimum duration selection procedure or use of null data packet BRP frames. In further embodiments, the maximum duration of the interframe spacing between BPR packets may be varied to improve the efficiency of BRP operation.