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：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：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：US11855931B2

公开(公告)日：2023-12-26

申请号：US18075978

申请日：2022-12-06

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 ,  H04W84/12 ,  H04W74/08 ,  H04L5/14 ,  H04L5/04

CPC classification number: H04L5/14 ,  H04W72/12 ,  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：US20210143887A1

公开(公告)日：2021-05-13

申请号：US16621133

申请日：2018-06-14

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

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

Abstract: Methods and an apparatus are disclosed for orthogonal frequency division multiplexing (OFDM) and/or single carrier (SC) based multiple input multiple output (MIMO) hybrid beamforming (HBF) including determining the capabilities of a station (STA) such as the capability for hybrid beamforming, single user MIMO (SU-MIMO), and multi user MIMO (MU-MIMO). An announcement frame with a control trailer may be transmitted to signal a transmission configuration. The announcement frame may be a grant frame or a request to send (RTS) frame if the STA is SU-MIMO capable or a RTS frame or a DMG clear to send (CTS)-self frame if the STA is MU-MIMO capable. One or more directional multi-gigabit (DMG) antennas may be configured based on the announcement frame. One or more sounding symbols may be transmitted and feedback may be provided based on the sounding symbols. An HBF signal may be transmitted based on the sounding symbol(s) and/or feedback.

公开(公告)号：US20210058121A1

公开(公告)日：2021-02-25

申请号：US17093924

申请日：2020-11-10

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0417 ,  H04B7/0426 ,  H04L25/02 ,  H04W72/08

Abstract: A responder performing a hybrid beam forming operation by having multiple antennas configured to receive a training packet, responsively generate a beam-formed receive signal by processing the received training packet with previously determined analog beam coefficients, determine whether digital baseband channel (DBC) tracking is indicated based on a tracking-type parameter contained within the received training packet, process a non-precoded training signal within the beam-formed receive signal and responsively determine a DBC estimate, and provide a feedback message having transmitter precoder data based on the DBC estimate.

公开(公告)号：US20240121071A1

公开(公告)日：2024-04-11

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: H04L5/14 ,  H04W72/12 ,  H04W74/08

CPC classification number: H04L5/14 ,  H04W72/12 ,  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：US11901981B2

公开(公告)日：2024-02-13

申请号：US18074861

申请日：2022-12-05

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/0456 ,  H04B7/06 ,  H04W72/542 ,  H04B7/0417 ,  H04B7/0426 ,  H04L25/02

CPC classification number: H04B7/0478 ,  H04B7/043 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0639 ,  H04L25/0204 ,  H04W72/542

Abstract: A method implemented by an apparatus having multiple antennas includes determining information that is associated with a baseband channel. The information indicating any of: measurement information and channel information. The apparatus transmits a signal for requesting baseband beam tracking. The signal transmission is based on a determination that system performance is degraded in a beamforming transmission and re-estimation of the baseband channel is part of a current link adaptation procedure.

公开(公告)号：US20230362994A1

公开(公告)日：2023-11-09

申请号：US17911722

申请日：2021-03-16

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W84/12

Abstract: Methods and apparatuses for operating in multi-access point (AP) wireless networks are described herein. A method performed by an AP may include transmitting, using a set of resources, a multi-AP ready-to-send (RTS) frame to at least one other AP and a plurality of stations (STAs). The method may include transmitting another frame using a portion of the set of resources. The method may include receiving, using the portion of the set of resources, a clear-to-send (CTS) frame from at least one STA of the plurality of STAs in response to the another frame. The method may include transmitting, using the portion of the set of resources, a data frame to the at least one STA. The multi-AP RTS frame may include resource allocation information for the at least one other AP and the plurality of STAs.

公开(公告)号：US20230275642A1

公开(公告)日：2023-08-31

申请号：US18195135

申请日：2023-05-09

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/06

CPC classification number: H04B7/0695 ,  H04B7/0645 ,  H04B7/0697 ,  H04B7/0636

Abstract: Systems and methods for multidimensional beam refinement procedures and signaling for millimeter wave WLANs. In some embodiments, there are multi-dimensional enhanced beam refinement protocol MAC and PHY frame designs that extend the MAC packet and the PPDU format with or without backwards compatibility. The multiple dimensions may be supported jointly or separately. In other embodiments, the increased data signaled in the eBRP frame designs may be more efficiently signaled with reduced BRP frame sizes, such as through a training type dependent BRP minimum duration selection procedure or use of null data packet BRP frames. In further embodiments, the maximum duration of the interframe spacing between BPR packets may be varied to improve the efficiency of BRP operation.