公开(公告)号：US20240089866A1

公开(公告)日：2024-03-14

申请号：US18307965

申请日：2023-04-27

Applicant: InterDigital Patent Holdings, Inc.

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

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

CPC classification number: H04W52/243 ,  H04W52/12 ,  H04W74/0808 ,  H04W84/12

Abstract: 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

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/0452 ,  H04B7/0417

CPC classification number: H04B7/0417 ,  H04B7/0452

Abstract: 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：US11901981B2

公开(公告)日：2024-02-13

申请号：US18074861

申请日：2022-12-05

Applicant: InterDigital Patent Holdings, Inc.

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

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

CPC classification number: H04B7/0478 ,  H04B7/043 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04L25/0204 ,  H04W72/542

Abstract: 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

Applicant: InterDigital Patent Holdings, Inc.

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

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

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

Abstract: 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

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

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

CPC classification number: H04W52/0216 ,  H04W28/16 ,  H04W84/12

Abstract: 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：US20230362994A1

公开(公告)日：2023-11-09

申请号：US17911722

申请日：2021-03-16

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Li Hsiang Sun ,  Rui Yang

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W84/12

Abstract: Methods and apparatuses for operating in multi-access point (AP) wireless networks are described herein. A method performed by an AP may include transmitting, using a set of resources, a multi-AP ready-to-send (RTS) frame to at least one other AP and a plurality of stations (STAs). The method may include transmitting another frame using a portion of the set of resources. The method may include receiving, using the portion of the set of resources, a clear-to-send (CTS) frame from at least one STA of the plurality of STAs in response to the another frame. The method may include transmitting, using the portion of the set of resources, a data frame to the at least one STA. The multi-AP RTS frame may include resource allocation information for the at least one other AP and the plurality of STAs.

公开(公告)号：US20230362814A1

公开(公告)日：2023-11-09

申请号：US18207513

申请日：2023-06-08

Applicant: Interdigital Patent Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Frank La Sita ,  Hanqing Lou ,  Xiaofei Wang ,  Li -Hsiang Sun

IPC: H04W52/02 ,  H04L27/04 ,  H04L27/20

CPC classification number: H04W52/0219 ,  H04L27/04 ,  H04L27/206 ,  H04W84/12

Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.

公开(公告)号：US20230300898A1

公开(公告)日：2023-09-21

申请号：US18323071

申请日：2023-05-24

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Guodong Zhang

IPC: H04W74/08 ,  H04W48/18 ,  H04W76/10 ,  H04W48/16

CPC classification number: H04W74/0833 ,  H04W48/18 ,  H04W76/10 ,  H04W48/16 ,  H04W84/12

Abstract: Systems, methods, and instrumentalities are disclosed for concurrent link setup and downlink data retrieval, e.g., for high efficiency WLAN. An access point (AP) may send a trigger element that allocates a resource for pre-association transmissions with the AP. The trigger element may allocate the resource for random access and/or deterministic access. The AP may receive, from an unassociated STA, a first frame via one or more resource units (RUs) allocated in the trigger element. The AP may determine a pre-association identifier (PID) that identifies the unassociated STA. The AP may send the PID to the unassociated STA, for example, in the trigger element or in the multi-STA ACK. The AP may send a second frame associated with a multi-user (MU) transmission that includes the PID. The AP may send a trigger frame that includes the PID.

公开(公告)号：US20230275642A1

公开(公告)日：2023-08-31

申请号：US18195135

申请日：2023-05-09

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/06

CPC classification number: H04B7/0695 ,  H04B7/0645 ,  H04B7/0697 ,  H04B7/0636

Abstract: 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.

公开(公告)号：US11722191B2

公开(公告)日：2023-08-08

申请号：US17227669

申请日：2021-04-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Oghenekome Oteri ,  Hanqing Lou ,  Rui Yang ,  Li-Hsiang Sun

IPC: H04B7/06 ,  H04L5/00 ,  H04W74/00 ,  H04W72/23 ,  H04W84/12 ,  H04B7/02

CPC classification number: H04B7/0617 ,  H04B7/0695 ,  H04L5/0053 ,  H04W72/23 ,  H04W74/006 ,  H04B7/02 ,  H04W84/12

Abstract: Multiple channel transmission in mmW Wireless Local Area Network (WLAN) systems may be provided. Multi-channel aggregation and channel bonding may include, for example, multi-channel aggregation for a single transmitter/receiver pair or multi-channel aggregation and bonding for multiple transmitter/receiver pairs with frequency and space based multiple access. Multi-channel beamforming may include, for example, one analog beam across two channels and analog circuits on each channel or a single analog circuit on both channels, one analog beam across two channels and separate digital precoding schemes on each channel, one analog beam across a primary channel and separate digital precoding schemes on each channel or two analog beams on two channels and separate digital precoding on each channel. Preamble signaling may be provided.