公开(公告)号：US12069720B2

公开(公告)日：2024-08-20

申请号：US17610343

申请日：2020-05-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W74/00 ,  H04B17/318 ,  H04W72/0453 ,  H04W72/56 ,  H04W74/08

CPC classification number: H04W74/008 ,  H04B17/318 ,  H04W72/0453 ,  H04W72/56 ,  H04W74/006 ,  H04W74/0866

Abstract: Methods and apparatuses for enhancing random access procedures are described herein. A method performed by an access point (AP) may comprise allocating a plurality of random access (RA) resource units (RA-RUs) for transmitting a message from a station (STA) to the AP over an upper or lower frequency band. The method may comprise transmitting, to a station (STA), one or more physical layer convergence procedure (PLCP) protocol data unit (PPDU) over the upper or lower frequency bands. Each of the one or more PPDUs may include a trigger frame, and the trigger frame may include an indication of the plurality of RA-RUs and a target received signal strength indicator (TRSSI) associated with at least one of the upper or lower frequency bands. The method may comprise receiving, in response to the trigger frame, the message from the STA in one of the plurality of RA-RUs.

公开(公告)号：US12068793B2

公开(公告)日：2024-08-20

申请号：US16066577

申请日：2016-12-29

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Robert L. Olesen ,  Rui Yang ,  Moon-il Lee ,  Alphan Sahin ,  Hanqing Lou ,  Fengjun Xi ,  Frank La Sita ,  Byung K. Yi ,  Janet A. Stern-Berkowitz

IPC: H04B15/02 ,  H04B1/10 ,  H04B1/403 ,  H04B7/0413 ,  H04B15/00 ,  H04B17/318 ,  H04W16/14 ,  H04W88/06

CPC classification number: H04B15/02 ,  H04B1/10 ,  H04B1/1027 ,  H04B1/406 ,  H04B7/0413 ,  H04B15/00 ,  H04B17/318 ,  H04W16/14 ,  H04W88/06

Abstract: Systems, methods, and instrumentalities are disclosed for transmitting a message. For example, a first radio access technology, RAT, and/or a second RAT may be determined. The first RAT may be determined for reception of data. The second RAT may be determined for the reception of the data, perhaps for example based on an indication received via the first RAT. The data may be received via a first node associated with the first RAT and a second node associated with the second RAT.

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：US12004084B2

公开(公告)日：2024-06-04

申请号：US17868047

申请日：2022-07-19

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W52/02

CPC classification number: H04W52/0235

Abstract: Methods and apparatuses are described herein for network discovery. A wireless transmit/receive unit (WTRU) may transmit, to a first access point (AP), via a Primary Connectivity Radio (PCR), a request indicating that on a condition that the WTRU is disassociated from the first AP, the WTRU will enter a wake-up radio (WUR) only discovery mode. The WTRU may receive, from the first AP, via the PCR, a management frame that has WUR discovery elements including an indication of at least one channel used by a second AP. The WTRU may perform disassociation from the first AP. The WTRU may activate a WUR and deactivate the PCR. On a condition that the WTRU is disassociated from the first AP, the WTRU may receive, from the second AP, via the WUR, a WUR frame over the at least one channel to enable the WTRU to activate the PCR to initiate association.

公开(公告)号：US20240179547A1

公开(公告)日：2024-05-30

申请号：US18432853

申请日：2024-02-05

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W24/08 ,  H04B17/309 ,  H04W48/12 ,  H04B7/06

CPC classification number: H04W24/08 ,  H04B17/309 ,  H04W48/12 ,  H04B7/0617

Abstract: A communication device is provided herein. The communication device may include a processor and the transceiver configured to monitor for one or more frames in a plurality of beamforming sectors during a time interval. The processor and the transceiver may be configured to receive at least one frame in at least one the plurality of beamforming sectors during the time interval. The processor and the transceiver may be configured to transmit a response frame using beamforming parameters based on one of the plurality of beamforming sectors in which the at least one frame is received, wherein the response frame is transmitted using a subsequent time interval associated with the one of the plurality of beamforming sectors. The processor and the transceiver may be configured to operate in an unlicensed frequency band.

公开(公告)号：US20240163019A1

公开(公告)日：2024-05-16

申请号：US18420300

申请日：2024-01-23

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04L1/1812 ,  H04L1/00 ,  H04W74/00

CPC classification number: H04L1/1812 ,  H04L1/0025 ,  H04W74/004 ,  H04W84/12

Abstract: A method for use in a wireless transmit/receive unit (WTRU). The method comprises: receiving LRRE information from an AP; determining whether a first condition is satisfied by the WTRU, wherein the first condition is satisfied by the WTRU, on a condition that the first condition is satisfied, sending a mode change request to the AP to change an operation mode to a LRRE HARQ mode; receiving a response regarding the mode change request from the AP; and communicating with the AP using a plurality of PPDUs, each of the PPDUs comprising at least one field enabling transmissions between the WTRU and the AP under the first condition and a LRRE HARQ mode indication.

公开(公告)号：US11949477B2

公开(公告)日：2024-04-02

申请号：US17516253

申请日：2021-11-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0695

Abstract: Systems, methods, and instrumentalities are disclosed for adaptation of multiple input multiple output (MIMO) mode in mmW Wireless Local Area Network (WLAN) systems. A first station (STA) may receive a mode change request from a second STA. The mode change request may indicate a mode change for a MIMO mode, a polarization mode, and/or an orthogonal frequency-division multiple access (OFDMA) mode. The mode change request may include one or more STA fields. The one or more STA fields may include a STA field associated with the first STA. Each of the one or more STA fields may include a MIMO mode subfield, a polarization mode subfield, and/or an OFDMA mode subfield. The first STA may change the MIMO mode, the polarization mode, and/or the OFDMA mode, for example, based on the mode change request. The first STA may send a mode change response to the second STA.

公开(公告)号：US20240106585A1

公开(公告)日：2024-03-28

申请号：US18038573

申请日：2021-11-24

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Zinan Lin ,  Xiaofei Wang ,  Rui Yang ,  Li Hsiang Sun

IPC: H04L5/00 ,  H04W52/16 ,  H04W52/36

CPC classification number: H04L5/0023 ,  H04L5/0037 ,  H04W52/16 ,  H04W52/367 ,  H04W84/12

Abstract: A wireless station (STA) for parameterized spatial reuse (PSR) operation. The STA may receive, from a first access point (AP) that the STA is not associated with, a trigger frame. The trigger frame includes a signal (SIG) field that includes a PSR field. The PSR field includes a plurality of subfields each corresponding to a respective subchannel associated with the trigger frame. This information includes transmission power level information. The STA may then determine, for each subchannel, using the transmission power level information, transmission power upper bounds for each of the subchannels.

公开(公告)号：US20240064646A1

公开(公告)日：2024-02-22

申请号：US18239706

申请日：2023-08-29

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Joseph S. Levy

IPC: H04W52/02

CPC classification number: H04W52/0274 ,  H04W52/0219 ,  H04W52/0222 ,  H04W52/0229 ,  H04W52/0216 ,  H04W84/12

Abstract: Methods and apparatuses are described herein for rediscovery and medium access for wake-up radios. For example, a wireless transmit receive unit (WTRU) may receive, via a first transceiver, a frame that includes a wake-up radio (WUR) operation element having a first counter value. The WTRU may deactivate the first transceiver and activate a second transceiver, wherein the first transceiver enters into a doze state and the second transceiver is in an awake state. The WTRU may then receive, via the second transceiver in the awake state, a WUR frame that includes a second counter value indicating an update of a plurality of basic server set (BSS) parameters associated with the first transceiver. On a condition that the second counter value is different than the first counter value, the WTRU may activate the first transceiver to update the plurality of BSS parameters, wherein the first transceiver enters into an awake state.

公开(公告)号：US11909530B2

公开(公告)日：2024-02-20

申请号：US17421611

申请日：2020-01-10

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04L1/1812 ,  H04L1/00 ,  H04W74/00 ,  H04W84/12 ,  H04W88/10

CPC classification number: H04L1/1812 ,  H04L1/0025 ,  H04W74/004 ,  H04W84/12 ,  H04W88/10

Abstract: A method for use in a wireless transmit/receive unit (WTRU). The method comprises: receiving LRRE information from an AP; determining whether a first condition is satisfied by the WTRU, wherein the first condition is satisfied by the WTRU, on a condition that the first condition is satisfied, sending a mode change request to the AP to change an operation mode to a LRRE HARQ mode; receiving a response regarding the mode change request from the AP; and communicating with the AP using a plurality of PPDUs, each of the PPDUs comprising at least one field enabling transmissions between the WTRU and the AP under the first condition and a LRRE HARQ mode indication.