公开(公告)号：US20240147274A1

公开(公告)日：2024-05-02

申请号：US18407067

申请日：2024-01-08

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Hanqing Lou ,  Nirav B. Shah ,  Xiaofei Wang ,  Rui Yang ,  Guodong Zhang ,  Frank La Sita ,  Robert L. Olessen

IPC: H04W24/08 ,  H04J11/00 ,  H04W52/34 ,  H04W74/00 ,  H04W74/0808 ,  H04W84/12

CPC classification number: H04W24/08 ,  H04J11/00 ,  H04W52/34 ,  H04W74/006 ,  H04W74/0808 ,  H04W84/12

Abstract: Device, systems, and/or techniques for using sub-channel signaling information between an access point and a first station are disclosed. In one aspect, a method performed by a station (STA) includes: receiving, from a neighboring STA in an overlapping basic service set (OBSS), a physical (PHY) layer preamble that includes a signal field indicating a plurality of sub-bands and associated power thresholds for Uplink Orthogonal Frequency-Divisional Multiple Access (UL OFDMA) transmission, that are available for OBSS spatial reuse (SR) by the STA; and sending, to an AP with which the STA is associated, an UL OFDMA transmission using a sub-band of the plurality of sub-bands and an associated power threshold indicated in the signal field. Additional embodiments are disclosed.

公开(公告)号：US20240120970A1

公开(公告)日：2024-04-11

申请号：US18390801

申请日：2023-12-20

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/0417 ,  H04B7/0452

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：US20240064634A1

公开(公告)日：2024-02-22

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

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：US20240040531A1

公开(公告)日：2024-02-01

申请号：US18211509

申请日：2023-06-19

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W60/04 ,  H04W8/00

CPC classification number: H04W60/04 ,  H04W8/005 ,  H04W84/12

Abstract: Methods and apparatuses are described herein for multiple AP coordination in wireless local area networks (WLANs). For example, a station (STA) may receive, from a first access points (APs), a probe response frame that includes one or more indicators indicating multiple AP operation capabilities of the first AP and a second AP. The STA may transmit, to at least one of the first AP or the second AP, a multiple AP association request frame that enables the first AP to be associated with the second AP for a multiple AP operation. The STA may receive, from the first AP, a first multiple AP association response frame indicating acceptance or rejection of the multiple AP operation with the first AP. The STA may receive, from the second AP, a second multiple AP association response frame indicating acceptance or rejection of the multiple AP operation with the second AP.

公开(公告)号：US11843428B2

公开(公告)日：2023-12-12

申请号：US17667144

申请日：2022-02-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/08 ,  H04B7/0417 ,  H04B17/318 ,  H04B17/336 ,  H04B7/0456 ,  H04B7/06 ,  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 may include receiving, from an access point (AP), a frame including information indicating a broadcast address. The frame may further include a control trailer including information indicating that a multi-user multiple input-multiple output (MU-MIMO) frame is to be transmitted by the AP and information indicative of a designation of a plurality of STAs, the plurality of STAs including the STA. The frame may solicit response frames from at least the designated plurality of STAs. The method may further include transmitting a response frame to the indicated broadcast address and receiving the MU-MIMO frame from the AP.

公开(公告)号：US20230388933A1

公开(公告)日：2023-11-30

申请号：US18233940

申请日：2023-08-15

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W52/14 ,  H04W52/24 ,  H04W52/10 ,  H04W74/00

CPC classification number: H04W52/146 ,  H04W52/242 ,  H04W52/245 ,  H04W84/12 ,  H04W52/246 ,  H04W74/006 ,  H04W52/10

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：US20230388753A1

公开(公告)日：2023-11-30

申请号：US18032383

申请日：2021-10-19

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Li Hsiang Sun ,  Joseph Levy

IPC: H04W4/06 ,  H04W72/12

CPC classification number: H04W4/06 ,  H04W72/12

Abstract: Systems, methods, and devices for broadcast service negotiation and non-simultaneous transmit-receive (STR) channel blindness recovery are provided herein. Some methods performed by a Wireless Transmit/Receive Unit (WTRU), may comprise operating over a first link; operating over a second link; receiving a frame including a Network Allocation Vector (NAV) setting associated with the second link, the NAV setting indicating a time duration; and sending a transmission over the first link, wherein a duration of the transmission over the first link is shorter than or equal to the time duration indicated by the NAV setting. The frame including the NAV setting indicates that the time duration may not be extended or modified. The method may further comprise sending, by the WTRU, an indication that it the WTRU is capable of performing a multi-link restricted transmission. The WTRU may enter a sleep mode on the first link after sending the transmission over the first link.

公开(公告)号：US20230388000A1

公开(公告)日：2023-11-30

申请号：US18234150

申请日：2023-08-15

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/06 ,  H04B7/0452 ,  H04W74/08

CPC classification number: H04B7/0695 ,  H04B7/0452 ,  H04W84/12 ,  H04B7/0628 ,  H04W74/0816 ,  H04B7/0617

Abstract: Methods for multiple input-multiple output (MIMO) transmission are provided herein. A method may include sensing, using at least one of a plurality of antenna chains, radio frequency (RF) energy on a channel in a first time duration and may indicate the channel is busy. RF energy may be sensed on the channel using the at least one of the plurality of antenna chains in a second time duration and may indicate the channel is not busy. A method may include sending energy level sensed during the second time duration, a frame using the at least one of the plurality of antenna chains. The frame may indicate timing information associated with a MIMO transmission. The MIMO transmission may be sent using the indicated timing information and the at least one of the plurality of antenna chains.

公开(公告)号：US11792854B2

公开(公告)日：2023-10-17

申请号：US17504698

申请日：2021-10-19

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04L12/28 ,  H04W74/08 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1867 ,  H04L5/00 ,  H04L1/16 ,  H04W72/0453 ,  H04W84/12

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

Abstract: A station may receive a frame transmitted to a plurality of stations (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 multiple user request to send (MU RTS) frame transmitted to the plurality of STAs and may subsequently transmit a clear to send (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：US20230325864A1

公开(公告)日：2023-10-12

申请号：US18208776

申请日：2023-06-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: A63F13/792 ,  G06N20/00 ,  G06N5/04

CPC classification number: G06Q30/0209 ,  G06Q30/0211 ,  A63F13/792 ,  G06N20/00 ,  G06N5/04

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.