公开(公告)号：US20250015916A1

公开(公告)日：2025-01-09

申请号：US18896301

申请日：2024-09-25

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Robert L. Olesen ,  Nirav B. Shah

IPC: H04J11/00 ,  H04W72/30

Abstract: Systems, procedures, and instrumentalities are disclosed for synchronizing a signal burst, signal design, and/or system frame acquisition. A synchronization signal (SS) block or burst may be received. The SS block or burst may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and/or a Physical Broadcast Channel (PBCH). A first cell ID may be determined and/or a plurality of SSS sequences may be generated. An m0 value (e.g., a first cyclic shift) may be determined from a set of m0 values, for example, based on the generated plurality of SSS sequences. An n1 value (e.g., a second cyclic shift) may be determined from a set of n1 values. A second cell ID may be determined, for example, based on the m0 value and the n1 value. A third cell ID may be determined, for example, based on the second cell ID and the first cell ID.

公开(公告)号：US20240243764A1

公开(公告)日：2024-07-18

申请号：US18415565

申请日：2024-01-17

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 ,  H03M13/27 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

CPC classification number: H04B1/02 ,  H03M13/27 ,  H03M13/2707 ,  H04L1/00 ,  H04L1/0006 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/1671 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

公开(公告)号：US20240171432A1

公开(公告)日：2024-05-23

申请号：US18427371

申请日：2024-01-30

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

CPC classification number: H04L27/2602 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1861 ,  H04L5/0055 ,  H04W28/04 ,  H04W28/06 ,  H04W72/121 ,  H04B7/0452 ,  H04L2001/0093 ,  H04L5/0007 ,  H04L27/2603 ,  H04L27/26035 ,  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：US11949440B2

公开(公告)日：2024-04-02

申请号：US17094552

申请日：2020-11-10

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 ,  H03M13/27 ,  H04L1/00 ,  H04L1/16 ,  H04L1/1607 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

CPC classification number: H04B1/02 ,  H03M13/27 ,  H03M13/2707 ,  H04L1/00 ,  H04L1/0006 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/1671 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

公开(公告)号：US11770819B2

公开(公告)日：2023-09-26

申请号：US17978250

申请日：2022-11-01

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Nirav B. Shah ,  Guodong Zhang ,  Ronald Murias

IPC: H04W72/121 ,  H04W72/04 ,  H04W74/00 ,  H04W74/06 ,  H04W72/0453 ,  H04W74/04 ,  H04L1/00 ,  H04L1/1607 ,  H04W72/20 ,  H04W72/21 ,  H04L1/1829 ,  H04W74/08 ,  H04B17/318 ,  H04W84/12

CPC classification number: H04W72/121 ,  H04L1/0025 ,  H04L1/1664 ,  H04L1/1685 ,  H04L1/1861 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/20 ,  H04W72/21 ,  H04W74/004 ,  H04W74/006 ,  H04W74/04 ,  H04W74/06 ,  H04W74/0816 ,  H04B17/318 ,  H04L1/007 ,  H04W84/12

Abstract: Methods and apparatuses are related to multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that is one of the plurality of WTRUs operable to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU includes a receiver configured to receive, from the AP, over at least one channel of the plurality of channels, a group poll (G-Poll) message that includes a resource allocation that indicates at least one allocated channel of the plurality of channels for the WTRU; and a transmitter configured to transmit an uplink request message, to the AP in response to the G-Poll message, over the at least one allocated channel of the plurality of channels, the uplink request message corresponding to uplink data the WTRU has for transmission to the AP.

公开(公告)号：US20230231669A1

公开(公告)日：2023-07-20

申请号：US18186632

申请日：2023-03-20

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Nirav B. Shah ,  Sudheer A. Grandhi ,  Ronald G. Murias ,  Guodong Zhang ,  Xiaofei Wang ,  Monisha Ghosh ,  Hanqing Lou ,  Robert L. Olesen

IPC: H04L5/00 ,  H04L1/00

CPC classification number: H04L5/0023 ,  H04L1/0025 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0061 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0226

Abstract: Method and apparatus for transmission and reception of a Greenfield preamble are provided. In the method and apparatus, the Greenfield preamble may be a single user (SU) preamble or a multi user (MU) preamble. As an MU preamble, the Greenfield preamble includes a short training field (STF), a first long training field (LTF), a first signal (SIG) field, at least one additional LTF, and a second SIG field. Additionally, the Greenfield preamble may be utilized for efficient transmission and reception of control information to wireless devices, whereby the control information may be indicated using the STF, the first LTF, or the first or second SIG fields.

公开(公告)号：US20210204254A1

公开(公告)日：2021-07-01

申请号：US17181938

申请日：2021-02-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Ronald G. Murias ,  Xiaofei Wang ,  Nirav B. Shah ,  Monisha Ghosh ,  Guodong Zhang ,  Frank La Sita ,  Robert L. Olesen

IPC: H04W72/04 ,  H04L5/00 ,  H04W74/00 ,  H04L27/26

Abstract: A method and apparatus may be configured to support coordinated orthogonal block-based resource allocation (COBRA) operations. An access point (AP) may be configured to indicate to a plurality of stations (STA)s that it may support COBRA. Each WTRU may be configured to indicate to the AP that it can support COBRA as well. The AP may be configured to transmit a COBRA controller information element (IE) comprising a plurality of fields to each of the WTRUs. Each WTRU may be configured to transmit a COBRA controllee IE comprising a plurality of fields. STA grouping management, group maintenance, channel access, beamforming, sounding and frequency and synchronization procedures are also described.

公开(公告)号：US11026187B2

公开(公告)日：2021-06-01

申请号：US16820986

申请日：2020-03-17

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

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：US10681734B2

公开(公告)日：2020-06-09

申请号：US15980665

申请日：2018-05-15

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W74/08 ,  H04W4/08 ,  H04W24/02 ,  H04W64/00 ,  H04W84/12

Abstract: Systems, methods, and instrumentalities are described to implement an interference management method in a WLAN. An access point (AP) or an inter-BSS coordinator (IBC) may identify a station (STA) associated with a first basic service set (BSS) as an edge STA or a non-edge STA The AP or the IBC may group the edge STA into an edge group and a non-edge STA into a non-edge group. The AP or the IBC may receive information associated with a second BSS. The AP or the IBC may coordinate access of the edge group and/or the non-edge group. The access may be coordinated to minimize interference of the edge STA. The access may be based at least on the received information associated with the second BSS The AP or the IBC may adjust transmit power of a plurality of STAs identified as edge group STAs and non-edge group STAs.

公开(公告)号：US10063290B2

公开(公告)日：2018-08-28

申请号：US14777158

申请日：2014-03-13

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Pengfei Xia ,  Oghenekome Oteri ,  Nirav B. Shah ,  Monisha Ghosh ,  Hanqing Lou ,  Robert L. Olesen

IPC: H04B7/00 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0626

Abstract: A station is used to implement non-linear coding based multiuser multiple-input multiple-output (MU-MIMO). The station includes a processor that may be configured to perform a number of actions. For example, the processor receives a null packet from an access point (AP). Channel feedback is generated using the null packet. The channel feedback is sent to the AP. QR dependent information is received from the AP. Data is sent to the AP according to the QR dependent information.