公开(公告)号：US11895517B2

公开(公告)日：2024-02-06

申请号：US17586329

申请日：2022-01-27

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: An enhanced sector level sweep procedure is provided herein. A method may include transmitting a plurality of beacon frames in a corresponding plurality of transmit sectors, wherein the plurality of beacon frames are transmitted within a beacon interval. The method may include receiving, from a second communication device, a first transmission including information indicating a first ranking. The first ranking is based on a characteristic of at least a first subset of the transmit sectors. The first transmission is received in a sector corresponding to one of the first subset of transmit sectors. The method may include receiving, from a third communication device, a second transmission including information indicating a second ranking. The second ranking is based on a characteristic of at least a second subset of the transmit sectors. The second transmission is received in a sector corresponding to one of the second subset of transmit sectors.

公开(公告)号：US11877264B2

公开(公告)日：2024-01-16

申请号：US17738672

申请日：2022-05-06

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W72/04 ,  H04W72/044 ,  H04L5/00 ,  H04W16/28 ,  H04W84/12

CPC classification number: H04W72/044 ,  H04L5/0055 ,  H04W16/28 ,  H04W84/12

Abstract: A method, apparatus, and system for beamforming training using a wireless transmit receive unit (WTRU). A WTRU may receive an indication of a number of space time slots (STSs) from an access point (AP) within a beacon frame during a beamforming training allocation. The WTRU may send a response signal to the AP in a specific STS based on a function of the number of STSs. The WTRU may receive an acknowledgement (ACK) from the AP confirming the response was received. Alternatively, the AP may send a signal indicating that a collision occurred and alter the number of STSs, and the WTRU may try again in the next beamforming training allocation.

公开(公告)号：US11871414B2

公开(公告)日：2024-01-09

申请号：US17291799

申请日：2019-11-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/20 ,  H04W84/12

CPC classification number: H04W72/20 ,  H04W84/12

Abstract: A method of multi-access point (multi-AP) communication performed by a wireless transmit/receive unit (WTRU) comprises: receiving (1510) a first trigger frame from a first access point (AP) of a plurality of APs, the first trigger frame comprising first information; receiving (1520) a second trigger frame from a second AP of the plurality of APs at a predetermined time duration after receiving the first trigger frame, the second trigger frame also comprising the first information of the first trigger frame; generating (1530) a synchronization frame based on the first trigger frame and the second trigger frame, the synchronization frame comprising synchronization information; transmitting the synchronization frame to at least the first AP and the second AP; and receiving (1540) a data transmission based on the synchronization information from each of the first AP and the second AP.

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：US11838938B2

公开(公告)日：2023-12-05

申请号：US17108642

申请日：2020-12-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Xiaofei Wang ,  Rui Yang ,  Mihaela C. Beluri ,  Janet A. Stern-Berkowitz

IPC: H04W72/08 ,  H04W72/541 ,  H04W4/70 ,  H04L5/00 ,  H04W74/08

CPC classification number: H04W72/541 ,  H04L5/0055 ,  H04W4/70 ,  H04W74/085

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information for a first set of resources and a second set of resources for a grantless physical uplink shared channel (PUSCH) transmission. The WTRU may determine data for transmission using the grantless PUSCH transmission. Based on the data, the WTRU may select resources from the first set or the second set for the grantless PUSCH transmission. Further, the WTRU may send the grantless PUSCH transmission including the data using the selected resources. In an example, the sending of the grantless PUSCH transmission may be part of a random access procedure. The random access procedure may be a two-step random access procedure. The random access procedure may be a random access channel (RACH) procedure. The random access procedure may depend upon a double contention pool setting, and the setting may address at least one of a data pool or a control pool.

公开(公告)号：US11838161B2

公开(公告)日：2023-12-05

申请号：US17346616

申请日：2021-06-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Hanqing Lou ,  Oghenekome Oteri ,  Robert Olesen ,  Fengjun Xi

IPC: H04L27/26 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0452 ,  H04L25/02 ,  H04B7/0413

CPC classification number: H04L27/2613 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0053 ,  H04L25/024 ,  H04L25/0204

Abstract: Methods, apparatuses, and systems to enable a channel estimation of more than one channel for Multi-Input Multi-Output (MIMO) communications in a wireless network is provided. The method includes determining a first set of complex numbers comprising first channel estimation signal associated with a first channel, determining a second set of complex numbers comprising second channel estimation signal associated with a second channel, and transmitting the first set of complex numbers and the second set of complex numbers via a physical layer (PHY) frame, wherein the second set of complex numbers are complex conjugates of the first set of complex numbers.

公开(公告)号：US20230371075A1

公开(公告)日：2023-11-16

申请号：US18227177

申请日：2023-07-27

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W74/08 ,  H04W72/541 ,  H04W74/00

CPC classification number: H04W74/0816 ,  H04W72/541 ,  H04W74/006 ,  H04W84/12

Abstract: 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：US11792846B2

公开(公告)日：2023-10-17

申请号：US17550789

申请日：2021-12-14

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Guodong Zhang ,  Li-Hsiang Sun ,  Oghenekome Oteri ,  Robert L. Olesen ,  Fengjun Xi ,  Rui Yang ,  Xiaofei Wang

IPC: H04W74/08 ,  H04W72/121 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04W74/08 ,  H04W72/121 ,  H04L27/26 ,  H04W84/12

Abstract: Methods and apparatus are described. A station includes a transceiver and a processor, which detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The trigger frame includes a user information field with an allocation of one or more random access resource units (RUs) and a common information field with information to set high efficiency (HE) SIGNAL-A (HE-SIG-A) fields in the UL MU transmission. The transceiver and the processor generate an HE trigger-based (TB) physical layer protocol data unit (PPDU) and set an HE-SIG-A field in the HE TB PPDU using the information in the trigger frame. The transceiver and the processor select one of the one or more random access RUs and transmit the HE TB PPDU, using the selected one of the one or more random access RUs, a short inter-frame space after the trigger frame.

公开(公告)号：US20230100162A1

公开(公告)日：2023-03-30

申请号：US17797753

申请日：2021-02-05

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Frank LaSita

IPC: H04W28/18 ,  H04L12/18

Abstract: Devices, methods, and/or systems for broadcasting in a wireless local area network (WLAN). A STA receives a frame from a wireless access point (AP) which includes an indication that an enhanced broadcast service (eBCS) service is ending. The frame may include an end-of-broadcast-service announcement information element, and/or an indication of a time at which the eBCS service is ending. The STA may negotiate with the AP for continuation of the broadcast service if the STA desires to continue receiving the eBCS service beyond the time at which the eBCS service ends. The STA may receive a trigger frame from the AP which triggers a response from the STA indicating that it desires to continue receiving the eBCS service beyond the time at which the eBCS service ends.

公开(公告)号：US20230019079A1

公开(公告)日：2023-01-19

申请号：US17953004

申请日：2022-09-26

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/0452 ,  H04B7/06

Abstract: 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.