公开(公告)号：US20250048428A1

公开(公告)日：2025-02-06

申请号：US18284153

申请日：2022-03-30

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Mahmoud Saad ,  Xiaofei Wang ,  Zinan Lin ,  Rui Yang

IPC: H04W74/0816 ,  H04W74/08 ,  H04W84/12

Abstract: A method performed by a first station (STA) may compromise: receiving, from an access point (AP) that has an established transmission opportunity (TXOP) with a second STA, a multi-user request-to-send (MU-RTS) transmission opportunity (TXOP) sharing (TXS) trigger frame, wherein the MU-RTS TXS trigger frame includes: (i) an indication that the AP is sharing the TXOP established with the second STA with the first STA, and (ii) an indication of a duration of the shared TXOP; and transmitting, in response to the MU-RTS TXS trigger frame, one or more uplink (UL) frames within the duration of the shared TXOP indicated by the MU-RTS TXS trigger frame.

公开(公告)号：US20250031198A1

公开(公告)日：2025-01-23

申请号：US18908223

申请日：2024-10-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/044 ,  A63F13/792 ,  G06N5/04 ,  G06N20/00 ,  G06Q30/0207 ,  G06Q30/0211 ,  H04B7/0417 ,  H04B7/0491 ,  H04B7/06 ,  H04L1/00 ,  H04W16/28

Abstract: A method and apparatus may be used to support coordinated and cooperative sectorized transmissions. Power control and clear channel assessment for sectorized transmissions may be used, along with sectorized beacon and associated procedures. Transmissions in a network may be protected by a first access point (AP) sending an omni-directional transmission and a beamformed or sectorized transmission to a station (STA), an overlapping basic service set (OBSS) confirming a spatially orthogonal (SO) condition based on the omni-directional transmission, and a second AP monitoring the omni-directional transmission and confirming the SO condition. The STA may be configured to receive a request-to-send (RTS) frame indicating data is available for transmission, and transmit a cooperative sectorized (CS) clear-to-send (CTS) frame indicating an ability for multiple AP reception.

公开(公告)号：US12192154B2

公开(公告)日：2025-01-07

申请号：US18545998

申请日：2023-12-19

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/12 ,  H04L5/14 ,  H04W74/0816 ,  H04W84/12

Abstract: 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：US20240405829A1

公开(公告)日：2024-12-05

申请号：US18799163

申请日：2024-08-09

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Hanqing Lou ,  Rui Yang ,  Robert L. Olesen ,  Alphan Sahin ,  Li-Hsiang Sun

IPC: H04B7/06 ,  H04B7/0417 ,  H04W24/10 ,  H04W88/08

Abstract: An access point (AP) may transmit a null data packet announcement (NDPA) with an indication of a resource unit of a bandwidth that feedback is requested. The AP may transmit a null data packet (NDP) for measurement of a channel quality for a resource unit of a bandwidth. The AP may transmit, based on a response, another feedback request for resource units of the bandwidth.

公开(公告)号：US12137413B2

公开(公告)日：2024-11-05

申请号：US18501706

申请日：2023-11-03

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W52/02 ,  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：US20240333465A1

公开(公告)日：2024-10-03

申请号：US18573765

申请日：2022-06-24

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Zinan Lin ,  Mahmoud Saad

IPC: H04L5/00 ,  H04W84/12

CPC classification number: H04L5/0094 ,  H04L5/0037 ,  H04L5/0055 ,  H04W84/12

Abstract: Methods and apparatuses for Subchannel Selective Transmission (SST) in a Wireless Local Area Network (WLAN) are provided herein. A station (STA) may receive a trigger frame from an access point (AP). The trigger frame may indicate a range of association identifiers (AIDs) and/or subchannel information. The subchannel information may identify one or more secondary subchannels for an SST. The STA may determine that the AID of the STA is within the range of AIDs indicted in the trigger frame. The STA may send feedback to the AP that indicates that the STA will monitor one or more of the secondary subchannels. The STA may receive the SST from the AP on a secondary subchannel of the one or more secondary subchannels. The STA may send an acknowledgment (ACK) to the AP on the secondary subchannel in response to receipt of the SST.

公开(公告)号：US20240243862A1

公开(公告)日：2024-07-18

申请号：US18558000

申请日：2022-04-29

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Mahmoud Saad ,  Zinan Lin ,  Hanqing Lou ,  Xiaofei Wang ,  Rui Yang

IPC: H04L5/00

CPC classification number: H04L5/0033

Abstract: A method performed by a station (STA) associated with a first access point (AP), wherein the first AP is part of a multi-AP (MAP) set comprising the first AP and at least a second AP, may compromise: receiving, from the second AP that the STA is not associated with, a null data packet announcement (NDPA) frame, the NDPA frame including a Special STA Info field including an association identifier (AID) relating to the association between the STA and the first AP; receiving a null data packet (NDP) frame from the second AP that the STA is not associated with; and transmitting, to the first AP, feedback based on the NDP frame.

公开(公告)号：US20240243764A1

公开(公告)日：2024-07-18

申请号：US18415565

申请日：2024-01-17

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Fengjun Xi ,  Yuan Sheng Jin ,  Pengfei Xia ,  Oghenekome Oteri ,  Hanqing Lou ,  Nirav B. Shah ,  Robert L. Olesen

IPC: H04B1/02 ,  H03M13/27 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

CPC classification number: H04B1/02 ,  H03M13/27 ,  H03M13/2707 ,  H04L1/00 ,  H04L1/0006 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/1671 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

公开(公告)号：US20240223250A1

公开(公告)日：2024-07-04

申请号：US18556787

申请日：2022-04-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Mahmoud Saad ,  Hanqing Lou ,  Xiaofei Wang ,  Zinan Lin ,  Rui Yang

IPC: H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0626 ,  H04B7/0632

Abstract: A station (STA) that is associated with a first access point (AP), that is a member of a multi-AP set receives a trigger frame from a second AP that is also a member of the multi-AP set. The STA is not associated with the second AP. The trigger frame includes an association identifier (AID) relating to the association between the STA and the first AP, and an AP identifier (APID) of the first AP. The STA transmits a feedback message, to the second AP, including information indicative of a channel quality of a communication channel between the STA and the second AP. Various formats for a trigger frame to solicit feedback from an OBSS STA, are disclosed.

公开(公告)号：US20240187084A1

公开(公告)日：2024-06-06

申请号：US18438321

申请日：2024-02-09

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Guodong Zhang ,  Xiaofei Wang ,  Sudheer A Grandhi ,  Hanqing Lou

IPC: H04B7/155 ,  H04W36/08 ,  H04W40/24 ,  H04W52/02 ,  H04W84/04 ,  H04W84/12

CPC classification number: H04B7/15507 ,  H04W40/244 ,  H04W52/0216 ,  H04W52/0229 ,  H04W84/047 ,  H04W36/08 ,  H04W84/12 ,  Y02D30/70

Abstract: A method performed by STA may comprise receiving, from a first AP, a first beacon frame comprising a first relay information element including a first field that indicates whether a root AP BSSID field is included in the first relay information element, determining that a first root AP BSSID field is included in the first relay information element and determining that the first AP is a relay AP of a root AP identified by the first root AP BSSID field. The method may further comprise receiving, from a second AP, a second beacon frame comprising a second relay information element including a second field that indicates whether a root AP BSSID is included in the second relay information element and determining that a root AP BSSID field is not included in the second information element and determining that the second AP is a root AP.