公开(公告)号：US12143180B2

公开(公告)日：2024-11-12

申请号：US15521475

申请日：2015-10-22

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Yuan Sheng Jin ,  Fengjun Xi ,  Pengfei Xia ,  Nirav B. Shah ,  Hanqing Lou ,  Robert L. Olesen ,  Oghenekome Oteri

IPC: H04B7/06 ,  H04B7/0452 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04W84/12

Abstract: An access point (AP) in a high efficiency (HE) wireless local area network (WLAN) may transmit a message specifying to a group of stations a guard interval from one of two different guard intervals. The AP may receive responses from the group of stations with the specified one of the two different guard intervals for multi-user uplink HE WLAN communication.

公开(公告)号：US11888663B2

公开(公告)日：2024-01-30

申请号：US17879416

申请日：2022-08-02

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Fengjun Xi ,  Hanging Lou ,  Oghenekome Oteri ,  Nirav B. Shah ,  Robert L. Olesen ,  Yuan Sheng Jin ,  Pengfei Xia ,  Frank La Sita ,  Guodong Zhang

IPC: H04W72/121 ,  H04L1/1607 ,  H04W28/04 ,  H04W28/06 ,  H04L27/26 ,  H04L1/1829 ,  H04L5/00 ,  H04L1/00 ,  H04B7/0452 ,  H04W84/12

CPC classification number: H04L27/2602 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1861 ,  H04L5/0055 ,  H04W28/04 ,  H04W28/06 ,  H04W72/121 ,  H04B7/0452 ,  H04L5/0007 ,  H04L27/2603 ,  H04L27/26035 ,  H04L2001/0093 ,  H04W84/12

Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.

公开(公告)号：US20230370121A1

公开(公告)日：2023-11-16

申请号：US18224748

申请日：2023-07-21

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Guodong Zhang ,  Oghenekome Oteri ,  Pengfei Xia

IPC: H04B7/024 ,  H04W72/1273 ,  H04W72/21 ,  H04W72/542 ,  H04B7/06

CPC classification number: H04B7/024 ,  H04W72/1273 ,  H04W72/21 ,  H04W72/542 ,  H04B7/0617 ,  H04W84/12

Abstract: A method and apparatus may be used in multi-AP and multi-wireless transmit/receive unit joint transmissions. The apparatus may be configured to transmit a joint transmission request on a first medium, and receive a joint transmission response on the first medium. In response, the apparatus my perform a joint transmission negotiation on a second medium and transmit data on the second medium based on the joint transmission negotiation. The apparatus may be configured to perform coordinated sectorized or beamformed transmissions through access point (AP)/PCP negotiations. The apparatus may provide an indication of support for joint transmission and coordinated sectorized or beamformed transmissions. The method and apparatus may also implement multi-AP/WTRU request-to-send (RTS)/clear-to-send (CTS) procedures. The apparatus may be configured to perform coordinated sectorized or beamforming grouping.

公开(公告)号：US20210289448A1

公开(公告)日：2021-09-16

申请号：US17335734

申请日：2021-06-01

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Pengfei Xia ,  Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Robert L. Olesen ,  Nirav B. Shah ,  Frank La Sita

IPC: H04W52/24 ,  H04W74/08 ,  H04W52/12

Abstract: Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.

公开(公告)号：US20200259529A1

公开(公告)日：2020-08-13

申请号：US16862670

申请日：2020-04-30

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Guodong Zhang ,  Oghenekome Oteri ,  Pengfei Xia

IPC: H04B7/024 ,  H04W72/12 ,  H04B7/06 ,  H04W72/08

Abstract: A method and apparatus may be used in multi-AP and multi-wireless transmit/receive unit joint transmissions. The apparatus may be configured to transmit a joint transmission request on a first medium, and receive a joint transmission response on the first medium. In response, the apparatus my perform a joint transmission negotiation on a second medium and transmit data on the second medium based on the joint transmission negotiation. The apparatus may be configured to perform coordinated sectorized or beamformed transmissions through access point (AP)/PCP negotiations. The apparatus may provide an indication of support for joint transmission and coordinated sectorized or beamformed transmissions. The method and apparatus may also implement multi-AP/WTRU request-to-send (RTS)/clear-to-send (CTS) procedures. The apparatus may be configured to perform coordinated sectorized or beamforming grouping.

公开(公告)号：US10334475B2

公开(公告)日：2019-06-25

申请号：US15555686

申请日：2016-03-07

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Fengjun Xi ,  Hanqing Lou ,  Oghenekome Oteri ,  Nirav B. Shah ,  Robert L. Olesen ,  Yuan Sheng Jin ,  Pengfei Xia ,  Frank La Sita ,  Guodong Zhang

IPC: H04W28/06 ,  H04L5/00 ,  H04W28/04 ,  H04W72/12 ,  H04L1/16 ,  H04L1/18 ,  H04L1/00 ,  H04B7/0452 ,  H04W84/12

Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.

公开(公告)号：US20190182778A1

公开(公告)日：2019-06-13

申请号：US16275046

申请日：2019-02-13

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Pengfei Xia ,  Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Robert L. Olesen ,  Nirav B. Shah ,  Frank La Sita

IPC: H04W52/24 ,  H04W52/12 ,  H04W74/08

Abstract: Methods and apparatuses are described herein for determining a transmit power based on clear channel assessment (CCA) thresholds. A station (STA) associated with a first Basic Service Set (BSS) may receive, from an access point (AP) associated with the first BSS, a clear channel assessment (CCA) value for a group of STAs associated with a second BSS. The CCA value may indicate a minimum CCA threshold for a packet received from the second BSS. The STA may then determine, based on the CCA value, a STA specific CCA parameter and a target CCA parameter. The target CCA parameter may be greater than or equal to the STA specific CCA parameter. Based on the STA specific CCA parameter and the target CCA parameter, the STA may determine a target transmit power control (TPC) parameter of the STA, wherein the sum of target TPC parameter and target CCA parameter is constant.

公开(公告)号：US10312950B2

公开(公告)日：2019-06-04

申请号：US15516597

申请日：2015-10-02

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Fengjun Xi ,  Yuan Sheng Jin ,  Pengfei Xia ,  Oghenekome Oteri ,  Hanqing Lou ,  Nirav B. Shah ,  Robert L. Olesen

IPC: H04B1/02 ,  H04L1/00 ,  H04L1/22 ,  H04L5/00 ,  H03M13/27 ,  H04L1/20 ,  H04L1/16 ,  H04W84/12

Abstract: Methods, systems, and apparatuses are disclosed for transmitting a plurality of bits to an access point (AP) and receiving constellation symbol from the AP. A constellation symbol may include a plurality of indications of bits. Each indication of the plurality of indications of bits may be associated with a respective wireless transmit/receive unit (WTRU) of a plurality of WTRUs. The plurality of indications of bits may include indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

公开(公告)号：US10305550B2

公开(公告)日：2019-05-28

申请号：US14441487

申请日：2013-11-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Guodong Zhang ,  Oghenekome Oteri ,  Pengfei Xia

IPC: H04B7/06 ,  H04B7/024 ,  H04W72/12 ,  H04W72/08 ,  H04W84/12 ,  H04B7/026

Abstract: A method and apparatus may be used in multi-AP and multi-wireless transmit/receive unit joint transmissions. The apparatus may be configured to transmit a joint transmission request on a first medium, and receive a joint transmission response on the first medium. In response, the apparatus my perform a joint transmission negotiation on a second medium and transmit data on the second medium based on the joint transmission negotiation. The apparatus may be configured to perform coordinated sectorized or beamformed transmissions through access point (AP)/PCP negotiations. The apparatus may provide an indication of support for joint transmission and coordinated sectorized or beamformed transmissions. The method and apparatus may also implement multi-AP/WTRU request-to-send (RTS)/clear-to-send (CTS) procedures. The apparatus may be configured to perform coordinated sectorized or beamforming grouping.

公开(公告)号：US09807699B2

公开(公告)日：2017-10-31

申请号：US15021634

申请日：2014-09-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Oghenekome Oteri ,  Pengfei Xia ,  Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Robert L. Olesen ,  Nirav B. Shah ,  Frank La Sita

IPC: H04W52/24 ,  H04W74/08 ,  H04W84/12 ,  H04W52/12

CPC classification number: H04W52/243 ,  H04W52/12 ,  H04W74/0808 ,  H04W84/12

Abstract: Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.