公开(公告)号：US20240275445A1

公开(公告)日：2024-08-15

申请号：US18571336

申请日：2022-06-20

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/06 ,  H04W84/12

CPC classification number: H04B7/0617 ,  H04B7/0634 ,  H04W84/12

Abstract: Methods and apparatuses for Multi-AP channel sounding for Wireless Area Networks (WLAN) are disclosed. A method performed by a beamformee may compromise: receiving, from a beamformer, a null data packed (NDP) announcement frame (NDPA); receiving, from the beamformer, an NDP frame; receiving, from the beamformer, an enhanced beamforming request poll (BFRP) trigger frame including an indication of a feedback format; and transmitting, to the beamformer based on the NDP and NDPA, using a format indicated by the feedback format of the BFRP trigger frame, a feedback frame including a feedback report. The trigger frame may be an enhanced beamforming report poll (BFRP) trigger frame. The feedback report may be a beamforming report or a vector index (VI) feedback report. The beamformer may be an access point (AP) and the beamformee may be a station (STA).

公开(公告)号：US20240275566A1

公开(公告)日：2024-08-15

申请号：US18567922

申请日：2022-06-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04L5/00 ,  H04B7/06

CPC classification number: H04L5/0094 ,  H04B7/0626 ,  H04B7/0632

Abstract: Methods and apparatuses for channel sounding reports may be used in wireless local area network (WLAN) systems. A station (STA) may receive, from an access point (AP), a beacon frame. The STA may receive, from the AP, a null data packet (NDP) announcement (NDPA) frame including an indication of subchannels for measuring channel characteristics. The STA may receive, from the AP, an NDP frame. The STA may transmit, to the AP, a feedback report frame including channel state information (CSI) feedback, wherein the CSI feedback is based on measurements that the STA performed on the received NDP frame using the indicated subchannels for measuring channel characteristics. The beacon frame may include indications of punctured subchannel(s) and subchannel(s) that is not punctured, which may be indicated as a disabled subchannel bitmap. The subchannels for measuring channel characteristics may be equal to or a subset of the subchannel(s) that is not punctured.

公开(公告)号：US20240356817A1

公开(公告)日：2024-10-24

申请号：US18687965

申请日：2022-10-04

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04L41/16 ,  G06N3/084 ,  G06N3/098 ,  H04W28/18

CPC classification number: H04L41/16 ,  H04W28/18 ,  G06N3/084 ,  G06N3/098

Abstract: A federated learning (FL) and/or a distributed machine learning (ML) model sharing process may be implemented in a wireless network. An access point (AP), station (STA), or the like may provide a FL announcement message indicating that a FL or ML process is in being utilized. A STA receiving the announcement message may provide a FL/ML support frame indicating its participation in FL model sharing. The STA may comprise a local FL model executable on the STA. The STA may update its local FL model based on information in the FL announcement message. The STA may update its local FL model based on information received from other STAs in the network. The FL announcement message may comprise a schedule, and the STA may be configured to train its local FL model in accordance with the schedule. The sharing model process may be implemented in a wireless local area network.

公开(公告)号：US20250119191A1

公开(公告)日：2025-04-10

申请号：US18834857

申请日：2023-02-06

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00

Abstract: Dynamic puncturing in a wireless local area network (WLAN) supporting 320 MHz bandwidths is disclosed. In one example, a method includes a first station (STA1) transmitting a null data packet announcement (NDPA) frame including an indicator of an orthogonal frequency division multiple access (OFDMA) subchannel puncturing over a wireless medium and subsequently transmitting a null data packet (NDP) having a U-SIG field specifying an OFDMA puncturing pattern. The NDPA may indicate that the subsequent NDP, which preferably occupies an 80 MHz channel, includes the OFDMA puncturing pattern in its U-SIG field. The method may further include transmitting a beamforming report poll (BFRP) soliciting measurement by the receiving station (STA2) on active resources, e.g., subchannels which have not been punctured. STA2 may transmit a beamforming report (BFR) in response to the BFRP, the BFR including measurements of active resources excluding subchannels inactive due to static OFDMA puncturing or dynamic OFDMA puncturing.

公开(公告)号：US20250039915A1

公开(公告)日：2025-01-30

申请号：US18785586

申请日：2024-07-26

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W72/541

Abstract: Systems and methods are described for interference awareness in wireless communication systems. A wireless station (STA) may detect an interference event comprising a transmission that will interfere or is interfering with a communication session of the STA with a second device, such as an access point (AP). The first device may transmit, to the second device, an identification of the interference event. The first device may receive, from the second device, a selection of an operation mode of a plurality of modes, transmitted responsive to receipt of the identification of the interference event. The first device may continue the communication session, with the second device, utilizing the selected operation mode.

公开(公告)号：US20240291536A1

公开(公告)日：2024-08-29

申请号：US18569028

申请日：2022-06-10

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Satyanarayana Katla ,  Onur Sahin ,  Mahmoud Saad ,  Rui Yang ,  Zinan Lin

IPC: H04B7/06 ,  H04W8/22 ,  H04W24/10

CPC classification number: H04B7/0626 ,  H04W8/22 ,  H04W24/10

Abstract: Methods and apparatuses are described herein for configuring multiple station (multi-STA) sensing-specific feedback. For example, a sensing initiator station (STA) may transmit, to first and second sensing responder STAs, a null data packet (NDP) announcement (NDPA) frame indicating one or more sensing feedback types that the first and second sensing responder STAs are to respond. The sensing initiator STA may transmit, to the first and second sensing responder STAs, an NDP frame. The sensing initiator STA may transmit, to the first and second sensing responder STAs, a trigger frame indicating one or more resources allocated for sensing measurement reports from the first and second sensing responder STAs. The sensing initiator STA may receive, from the first and second sensing responder STAs, using the one or more resources, the sensing measurement reports determined based on the one or more sensing feedback types.

公开(公告)号：US20230319886A1

公开(公告)日：2023-10-05

申请号：US18023515

申请日：2021-09-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Li Hsiang Sun ,  Mahmoud Saad ,  Rui Yang ,  Ushasi Ghosh

IPC: H04W74/08 ,  H04L5/00

CPC classification number: H04W74/0816 ,  H04L5/0035

Abstract: Methods and apparatuses are described herein for multiple-access point (multi-AP) sounding procedures in a wireless local area network (WLAN). A coordinating AP (CAP) may receive, from one or more member APs in a multi-AP set (MAPS), one or more indications indicating that the one or more member APs are capable of multi-AP sounding during a transmission opportunity (TXOP). The CAP may transmit a CAP TXOP indication (CTI) frame indicating that the multi-AP sounding is to be performed during a TXOP acquired by the CAP. The CAP may receive a CAP TXOP request (CTR) frame indicating that the one or more member APs of the MAP are willing to perform multi-AP sounding during the TXOP. The CAP may transmit a CAP TXOP AP schedule (CTAS) frame indicating a transmission schedule for one or more sounding frames to be transmitted by the one or more member APs during the TXOP.

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：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.