公开(公告)号：US20250167925A1

公开(公告)日：2025-05-22

申请号：US19028983

申请日：2025-01-17

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Alphan Sahin ,  Rui Yang ,  Erdem Bala ,  Shahrokh Nayeb Nazar

IPC: H04L1/1607 ,  H04L5/00 ,  H04L27/26 ,  H04W16/14 ,  H04W72/21

Abstract: A wireless transmit/receive unit (WTRU) may receive a downlink transmission and send a physical uplink control channel (PUCCH) transmission in each resource block (RB) of an interlace of a plurality of RBs in an active bandwidth part (BWP). A base sequence is mapped to the PUCCH transmission repetitively, once to each RB of the plurality of RBs of the interlace, using a different cyclic shift of the base sequence for each RB. Each different cyclic shift of the base sequence in the PUCCH transmission to each RB is a function of a RB index of the respective RB. The PUCCH transmission indicates either an acknowledgement (ACK) or a negative ACK (NACK) of the received downlink transmission.

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：US20250150976A1

公开(公告)日：2025-05-08

申请号：US19016511

申请日：2025-01-10

Applicant: InterDigital Patent Holdings, Inc

Inventor： Hanqing Lou ,  Oghenekome Oteri ,  Guodong Zhang ,  Robert Olesen ,  Rui Yang

IPC: H04W52/14 ,  H04B17/318 ,  H04W52/10 ,  H04W52/22 ,  H04W52/24 ,  H04W74/00 ,  H04W84/12 ,  H04W88/02

Abstract: Methods and systems for operation in a WLAN are provided. Methods and systems for a transmit power control (TPC) scheme are disclosed. In an embodiment, an access point (AP) may send a trigger frame to one or more stations (STAs) for synchronizing and scheduling uplink (UL) multi-user (MU) transmissions. The trigger frame may contain an open-loop power control index 1 and a power adjustment index 2. The one or more STAs may estimate pathloss using an indicated AP transmit power and received power to set a baseline transmit power. The one or more STAs may adjust their transmit power in the UL transmission period to be the indicated target receive power at the AP.

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：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：US20240314794A1

公开(公告)日：2024-09-19

申请号：US18672632

申请日：2024-05-23

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Erdem Bala ,  Afshin Haghighat ,  Mihaela C. Beluri ,  Rui Yang ,  Ananth Kini ,  Janet A. Stern-Berkowitz ,  Alphan Sahin

IPC: H04W72/23 ,  H04L1/1867 ,  H04L27/00 ,  H04W52/26 ,  H04W72/51 ,  H04W72/541

CPC classification number: H04W72/23 ,  H04L1/1893 ,  H04L27/0008 ,  H04W72/51 ,  H04W72/541 ,  H04W52/262

Abstract: A wireless transmit/receive unit (WTRU) may receive assignment information for receiving a first codeword using a first modulation and coding scheme (MCS) in a first set of resource blocks (RBs), and a second codeword using a second, different MCS in a second set of RBs. The first and second sets of RBs may be in a first time interval in a first bandwidth part using a first subcarrier spacing. The WTRU may receive, in symbols of the first time interval in the first bandwidth part, the first codeword using the first MCS in the first set of RBs and the second codeword using the second, different MCS in the second set of RBs. At least a portion of the first codeword and at least a portion of the second codeword may be received in at least a first symbol in the symbols in the first time interval.

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.