公开(公告)号：US20220216898A1

公开(公告)日：2022-07-07

申请号：US17699828

申请日：2022-03-21

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: 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：US20210160033A1

公开(公告)日：2021-05-27

申请号：US17164236

申请日：2021-02-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods and apparatuses for performing wake-up radio (WUR) are described herein. A receiving device may comprise a receiver configured to receive a first preamble using a first frequency range. The receiver may be configured to receive, using the first frequency range, a WUR packet after the first preamble, wherein a bandwidth associated with the first WUR packet is smaller than a bandwidth associated with the first preamble. The receiving device may be further configured to receive a second preamble and a second WUR packet, wherein the first preamble is frequency division multiplexed with the second preamble and the first WUR packet is frequency division multiplexed with the second WUR packet, and wherein a bandwidth associated with the second WUR packet is smaller than a bandwidth associated with the second preamble. The first WUR packet and the second WUR packet may have an equal duration of transmission.

公开(公告)号：US20200162135A1

公开(公告)日：2020-05-21

申请号：US16611188

申请日：2018-05-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

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

Abstract: A single input single output (SISO) data transmission may solicit a multiple input multiple output (MIMO) rank adaptation information. A number of transmit chain for transmission may be determined, e.g., by an access point (AP). A physical layer convergence procedure (PLCP) protocol data unit (PPDU) may be transmitted, e.g., to a station (STA). The PPDU may include data and training (TRN) sequences. The number of TRN sequences may be equal to the number of transmit chains. The PPDU may include information associated with the determined number of transmit chains for transmission. Feedback may be received, e.g., from the STA. The feedback may include information that identifies a transmit chain associated with the transmitted TRN sequences and/or a channel measurement associated with the identified transmit chain. A subsequent PPDU may be transmitted based on the channel measurement associated with the identified transmit chain from the received feedback.

公开(公告)号：US20200059342A1

公开(公告)日：2020-02-20

申请号：US16609976

申请日：2018-04-30

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04L5/00 ,  H04L27/26

Abstract: A wireless transmit/receive unit (WTRU) may be configured to perform wake up radio (WUR) for one or more WUR receivers. For example, the WTRU may transmit a common preamble to a first WUR receiver using a first frequency range. The WTRU may transmit a first WUR packet to the WUR receiver, after the common preamble. The WTRU may transmit the common preamble to a second WUR receiver using a second frequency range. The WTRU may transmit a second WUR packet after the common preamble, The bandwidth associated with the second WUR packet and the bandwidth associated with the first WUR packet may be smaller than the bandwidth associated with the common preamble, which may avoid interference from other transmitters {e.g., 802.11 transmitters, 802.11 stations, and 802.11 radios). The bandwidth associated with the first WUR packet and the bandwidth associated with the second WUR packet may not be coextensive with one another.

公开(公告)号：US12218763B2

公开(公告)日：2025-02-04

申请号：US17292268

申请日：2019-11-01

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Oghenekome Oteri ,  Hanqing Lou ,  Li Hsiang Sun ,  Joseph Levy ,  Alphan Sahin ,  Frank LaSita

IPC: H04L1/1607 ,  H04L1/1812 ,  H04L1/1867

Abstract: Methods and apparatuses are described herein for HARQ signaling and communications in wireless networks. For example, a method implemented in a STA comprises receiving a first MU transmission including a first set of HARQ bits, a first set of user data for STAs including the STA, a preamble including information indicating that the MU transmission includes the first set of HARQ bits, and a first set of HARQ Process IDs associated with the first set of HARQ bits; determining a subset of HARQ bits of the first set of HARQ bits; transmitting a response message indicating a reception status of the subset of HARQ bits; and receiving a second MU transmission including a second set of HARQ bits, a second set of user data for the plurality of STAs, and a second set of HARQ Process IDs associated with the second set of HARQ bits.

公开(公告)号：US20240349185A1

公开(公告)日：2024-10-17

申请号：US18758017

申请日：2024-06-28

Applicant: Interdigital Patent Holdings, INC.

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

IPC: H04W52/02 ,  H04L27/04 ,  H04L27/20 ,  H04W84/12

CPC classification number: H04W52/0219 ,  H04L27/04 ,  H04L27/206 ,  H04W84/12

Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.

公开(公告)号：US20240323653A1

公开(公告)日：2024-09-26

申请号：US18680315

申请日：2024-05-31

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: A method for use in a non-access point (AP) multi-link device (MLD), and a non-AP MLD are disclosed. In the method, the non-AP MLD transmits, by a first station (STA) affiliated with the non-AP MLD to a first access point (AP) affiliated with an AP MLD, on a first link, a request for AP assistance, including information regarding a second link for which assistance data is requested. Then, the non-AP MLD receives, by a second STA affiliated with the non-AP MLD from a second AP affiliated with the AP MLD, on the second link, a trigger frame.

公开(公告)号：US11750251B2

公开(公告)日：2023-09-05

申请号：US17890721

申请日：2022-08-18

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanging Lou ,  Li Hsiang Sun ,  Oghenekome Oteri ,  Rui Yang

IPC: H04W4/00 ,  H04B7/0452 ,  H04B7/06 ,  H04L27/26 ,  H04W72/23 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04L27/2601 ,  H04W72/23 ,  H04W84/12

Abstract: Methods and apparatus are described herein for dynamic allocation of multiple channels and data streams for multi-channel transmission and multiple-input and multiple-output (MIMO). For example, a station (STA) may receive an enhanced poll (EPoll) frame that includes a time offset, a channel offset and antenna/sector settings from an access point (AP). The STA may transmit, based on the received EPoll frame, an enhanced service period request (ESPR) frame that includes a MIMO control field and a multi-channel control field. The MIMO control field may indicate whether the STA supports MIMO transmission. The multi-channel control field may indicate whether the STA supports multi-channel transmission. Upon transmitting the ESPR frame, the STA may receive an enhanced grant frame from the AP. The enhanced grant frame may include an antenna configuration and a multi-channel allocation to enable the STA to perform the MIMO transmission and the multi-channel transmission.

公开(公告)号：US11716687B2

公开(公告)日：2023-08-01

申请号：US17040728

申请日：2019-03-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W52/02 ,  H04L27/04 ,  H04L27/20 ,  H04W84/12

CPC classification number: H04W52/0219 ,  H04L27/04 ,  H04L27/206 ,  H04W84/12

Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.

公开(公告)号：US11689272B2

公开(公告)日：2023-06-27

申请号：US17230473

申请日：2021-04-14

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 ,  H04B7/0636 ,  H04B7/0645 ,  H04B7/0697

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.