公开(公告)号：US12082112B2

公开(公告)日：2024-09-03

申请号：US17434571

申请日：2020-02-28

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

发明人： Xiaofei Wang ,  Oghenekome Oteri ,  Joseph S. Levy ,  Hanqing Lou ,  Li-Hsiang Sun

IPC分类号： H04W52/00 ,  H04W48/08 ,  H04W48/16 ,  H04W52/02 ,  H04W84/12

CPC分类号： H04W52/0229 ,  H04W48/08 ,  H04W48/16 ,  H04W52/0219 ,  H04W84/12

摘要： A method for use in a wireless transmit/receive unit (WTRU) is disclosed. The method comprises: generating, by a Station Management Entity (SME), a request primitive enabling a wake-up radio (WUR) scanning process for WUR discovery frames transmitted by one or more access points (APs), the request primitive comprising a plurality of first parameters; conducting the WUR scanning process using WUR based on the plurality of the first parameters; generating, at a MAC layer, at least one confirm primitive based on a result of the WUR scanning process and at least a part of the plurality of first parameters; and communicating, from the MAC layer to the SME, the at least one confirm primitive.

公开(公告)号：US20240267942A1

公开(公告)日：2024-08-08

申请号：US18439286

申请日：2024-02-12

申请人： InterDigital Patent Holdings, Inc.

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

IPC分类号： H04W72/541 ,  H04B17/309

CPC分类号： H04W72/541 ,  H04B17/309

摘要： In an embodiment for interference discovery for simultaneous transmission and reception, 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.

公开(公告)号：US20240064634A1

公开(公告)日：2024-02-22

申请号：US18501706

申请日：2023-11-03

申请人： InterDigital Patent Holdings, Inc.

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

IPC分类号： H04W52/02 ,  H04W28/16

CPC分类号： H04W52/0216 ,  H04W28/16 ,  H04W84/12

摘要： 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

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC分类号： H04W60/04 ,  H04W8/00

CPC分类号： H04W60/04 ,  H04W8/005 ,  H04W84/12

摘要： 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：US20240023166A1

公开(公告)日：2024-01-18

申请号：US18373117

申请日：2023-09-26

申请人： InterDigital Patent Holdings, Inc.

发明人： Oghenekome Oteri ,  Guodong Zhang ,  Li-Hsiang Sun ,  Robert L. Olesen

IPC分类号： H04W74/08 ,  H04L5/14 ,  H04W24/10

CPC分类号： H04W74/0816 ,  H04L5/14 ,  H04W24/10 ,  H04W84/12

摘要： Methods and apparatuses are described herein for full-duplex transmission opportunity discovery and transmission in a wireless 802.11 network. A station (STA) may receive a transmission opportunity (TxOP) setup frame from an access point (AP), the TxOP setup frame including information enabling the STA to transmit a first measurement frame and another STA to transmit a second measurement frame. The STA may transmit the first measurement frame to the other STA, receive the second measurement frame from the other STA, and transmit feedback to the AP based on the received second measurement frame. The STA may receive, based on the feedback, a trigger frame from the AP to communicate during a TxOP and receive, during the TxOP, downlink data from the 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

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

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

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

CPC分类号： H04B7/0417 ,  H04B7/0486 ,  H04B7/0617 ,  H04B7/0684 ,  H04B7/088 ,  H04B17/318 ,  H04B17/336 ,  H04W80/08

摘要： 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：US20230388000A1

公开(公告)日：2023-11-30

申请号：US18234150

申请日：2023-08-15

申请人： InterDigital Patent Holdings, Inc.

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

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

CPC分类号： H04B7/0695 ,  H04B7/0452 ,  H04W84/12 ,  H04B7/0628 ,  H04W74/0816 ,  H04B7/0617

摘要： 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：US11758584B2

公开(公告)日：2023-09-12

申请号：US17222546

申请日：2021-04-05

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

发明人： Hanqing Lou ,  Oghenekome Oteri ,  Li-Hsiang Sun ,  Xiaofei Wang ,  Rui Yang

IPC分类号： H04W74/08 ,  H04W72/541 ,  H04W74/00 ,  H04W84/12

CPC分类号： H04W74/0816 ,  H04W72/541 ,  H04W74/006 ,  H04W84/12

摘要： Methods and apparatus for protection of multi-user (MU) transmission are described herein. An apparatus includes a receiver, a transmitter and a processor. The receiver and the processor detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The processor and the transmitter generate and send a frame in response to the trigger frame and transmit channel availability information for a plurality of channels in response to the trigger frame. The receiver and the processor detect data in a resource unit (RU) of a downlink (DL) MU physical layer (PHY) protocol data unit (PPDU) on one of the plurality of channels. The one of the plurality of channels is based on the transmitted channel availability information.

公开(公告)号：US11736158B2

公开(公告)日：2023-08-22

申请号：US17953004

申请日：2022-09-26

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC分类号： H04B7/0452 ,  H04B7/06 ,  H04W84/12

CPC分类号： H04B7/0452 ,  H04B7/0619 ,  H04W84/12

摘要： An AP/PCP may perform user selection/pairing/grouping based on a measurement of an analog transmission (e.g., signal to noise ratio (SNR) or signal to interference plus noise ratio (SINR)). The SNRs may be used, for example by the station, to determine best beams and/or beam pairs and/or worst beams and/or beam pairs. A station may feed back the best few beams and/or beam pairs for a Tx and Rx virtual antenna pair. A station may feed back the worst few beams for the Tx and Rx virtual antenna pair. The AP/PCP may receive the indication(s) and/or use the indication(s) to group the stations.

公开(公告)号：US11445545B2

公开(公告)日：2022-09-13

申请号：US17052642

申请日：2019-05-03

申请人： INTERDIGITAL PATENT HOLDINGS, INC.

发明人： Oghenekome Oteri ,  Guodong Zhang ,  Li-Hsiang Sun ,  Robert L. Olesen

IPC分类号： H04W24/10 ,  H04W84/12 ,  H04L5/14 ,  H04W74/08

摘要： Methods and apparatuses are described herein for full-duplex transmission opportunity discovery and transmission in a wireless 802.11 network A full duplex compatible access point may transmit a full duplex (FD) transmission opportunity (TxOP) setup frame to a plurality of wireless transmit/receive units (WTRUs). This enables each of the plurality of WTRUs to transmit a measurement frame for interference measurement by the each of the other WTRUs to determine which WTRUs may participate in FD communication. Feedback is received by the AP and the AP determines which of the plurality of WTRUs the AP can perform FD communication with based on the feedback. FD communication with the determined WTRUs is then commenced.