公开(公告)号：US12302390B2

公开(公告)日：2025-05-13

申请号：US16436478

申请日：2019-06-10

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Monisha Ghosh ,  Xiaofei Wang ,  Robert L. Olesen

IPC: H04W74/0816 ,  H04B7/06 ,  H04W72/21 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08

Abstract: Systems, methods, and instrumentalities are provided to implement transmission scheduling. A multiband device may send a request via a first frequency band. The request may include a multiband Request to Send (MRTS) transmission. The request may be associated with a second frequency band and/or a beamforming training schedule. The first frequency band may be associated with a quasi-omni transmission and the second frequency band may be associated with a directional transmission. The first frequency band may be a 5 GHz band and the second frequency band may be a 60 GHz band. The multiband device may receive a multiband Clear to Send (MCTS) transmission via the first frequency band confirming the request. The multiband device may be configured to send a beamforming signal in accordance with the request, for example, via the second frequency band. The beamforming signal may be sent in accordance with a beamforming training schedule.

公开(公告)号：US12302327B2

公开(公告)日：2025-05-13

申请号：US18523370

申请日：2023-11-29

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W72/20 ,  H04W84/12

Abstract: 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：US20250096953A1

公开(公告)日：2025-03-20

申请号：US18960627

申请日：2024-11-26

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Guodong Zhang ,  Joseph S. Levy

IPC: H04L1/1829 ,  H04L1/00 ,  H04L1/1607 ,  H04W52/02

Abstract: A method performed by a station (STA) for operating in a wireless local area network (WLAN) is provided. A method may include receiving a beacon frame including an indication of a target wake time (TWT) period and a type indication that indicates single-user (SU) uplink (UL) transmission or multi-user (MU) UL transmission for the TWT period. The method may include receiving a trigger frame triggering a start of the TWT period. The STA may be awake during the TWT period. The method may include transmitting at least one frame during the TWT period. The at least one frame may be a SU uplink transmission or MU uplink transmission in accordance with the type indication.

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：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：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：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.

公开(公告)号：US20240120972A1

公开(公告)日：2024-04-11

申请号：US18537384

申请日：2023-12-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/08 ,  H04B17/318 ,  H04B17/336 ,  H04W80/08

CPC classification number: H04B7/0417 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0684 ,  H04B7/088 ,  H04B17/318 ,  H04B17/336 ,  H04W80/08

Abstract: Methods and apparatuses for multiple input-multiple output (MIMO) channel access are provided herein. A method performed by a station (STA) may include receiving, from an initiating STA, a frame including information indicating a broadcast address and a control trailer. The control trailer may include information indicating that a multi-user multiple input-multiple output (MU-MIMO) frame is to be received from the initiating STA, and information indicative of a plurality of STAs, the plurality of STAs including the STA. The method may include transmitting a response frame to the indicated broadcast address based on the received frame and receiving the MU-MIMO frame from the initiating STA.

公开(公告)号：US11937285B2

公开(公告)日：2024-03-19

申请号：US17978542

申请日：2022-11-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B17/309 ,  H04W72/541

CPC classification number: H04W72/541 ,  H04B17/309

Abstract: Methods and apparatus for interference discovery for simultaneous transmission and reception are provided. In an embodiment, a station (STA) receives a STR request message from an access point (AP). The STA transmits a first STR response message to the AP based on the received STR request message. The STA receives a second STR response message transmitted from a second STA to the AP. The STA determines a received power of the received second STR response message. The STA receives a first trigger message from the AP. The first trigger message indicates a STA role field. The STA transmits interference information to the AP. The interference information is based on the determined received power. The STA role field comprises an indication of at least one or more of a primary STA and a secondary STA. The STA aggregates the interference report with a data transmission to the AP in response to the first trigger message.