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    MULTI-USER PARALLEL CHANNEL ACCESS IN WLAN SYSTEMS
    121.
    发明申请
    MULTI-USER PARALLEL CHANNEL ACCESS IN WLAN SYSTEMS 有权
    WLAN系统中的多用户并行通道访问

    公开(公告)号：US20130229996A1

    公开(公告)日：2013-09-05

    申请号：US13781909

    申请日：2013-03-01

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

    IPC: H04W72/04

    CPC classification number: H04W72/121 ,  H04B17/318 ,  H04L1/0025 ,  H04L1/007 ,  H04L1/1664 ,  H04L1/1685 ,  H04L1/1861 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/0453 ,  H04W72/1278 ,  H04W74/004 ,  H04W74/006 ,  H04W74/04 ,  H04W74/06 ,  H04W74/0816 ,  H04W84/12

    Abstract: A method and apparatus may provide multi-user parallel channel access (MU-PCA) and/or single-user parallel channel access (SU-PCA) using transmit and/or receive with symmetrical bandwidth, in the downlink (DL), uplink (UL), or combined DL and UL. SU-PCA and MU-PCA may support unequal modulation and coding schemes (MCS) and unequal transmit power. Medium access control (MAC) layer, Physical layer (PHY), and mixed and PHY layer methods and procedures may support UL, DL and combined UL and DL SU-PCA and MU-PCA using transmit and/or receive with symmetrical bandwidth. MU-PCA and/or SU-PCA may also be supported by MAC and PHY layer designs and procedures for downlink, uplink and combined uplink and downlink using transmit/receive with asymmetrical bandwidth.

    Abstract translation: 一种方法和装置可以在下行链路（DL），上行链路（DL）中使用具有对称带宽的发射和/或接收来提供多用户并行信道接入（MU-PCA）和/或单用户并行信道接入（SU-PCA） UL）或组合的DL和UL。 SU-PCA和MU-PCA可以支持不相等的调制和编码方案（MCS）和不相等的发送功率。 介质访问控制（MAC）层，物理层（PHY）以及混合和PHY层方法和过程可以使用具有对称带宽的发送和/或接收来支持UL，DL和组合的UL和DL SU-PCA和MU-PCA。 通过使用具有非对称带宽的发送/接收的下行链路，上行链路和组合上行链路和下行链路的MAC和PHY层设计和过程也可以支持MU-PCA和/或SU-PCA。

    METHODS, APPARATUSES AND SYSTEMS FOR SUPPORTING MULTI-USER TRANSMISSIONS IN A WIRELESS LOCAL AREA NETWORK (WLAN) SYSTEM
    122.
    发明申请
    METHODS, APPARATUSES AND SYSTEMS FOR SUPPORTING MULTI-USER TRANSMISSIONS IN A WIRELESS LOCAL AREA NETWORK (WLAN) SYSTEM 有权

    公开(公告)号：US20250151107A1

    公开(公告)日：2025-05-08

    申请号：US19007239

    申请日：2024-12-31

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Hanqing Lou ,  Guodong Zhang ,  Robert Olesen ,  Xiaofei Wang

    IPC: H04W74/00 ,  H04B7/0452 ,  H04W80/00

    Abstract: Methods, devices and systems are provided for performing for multi-user (MU) transmission. A wireless transmit/receive unit (WTRU) may be configured to receive a frame, decode the received frame and determine whether the received frame is a null data packet (NDP) multi-user (MU) media access control (MAC) physical layer convergence protocol (PLCP) protocol data unit (PPDU) (NDP MU MAC PPDU) based on meeting an NDP condition. The NDP MU MAC PPDU may correspond to an MU transmission and may include a PLCP header which includes an NDP signal (SIG) field having MU control information. Based on the received frame meeting the NDP condition, the WTRU may be further configured to process the NDP SIG field, generate a response based on the NDP SIG field and the MU control information, and transmit the response.

    METHODS FOR ENABLING DYNAMIC PUNCTURING IN WLAN SYSTEMS
    123.
    发明申请
    METHODS FOR ENABLING DYNAMIC PUNCTURING IN WLAN SYSTEMS 有权

    公开(公告)号：US20250119191A1

    公开(公告)日：2025-04-10

    申请号：US18834857

    申请日：2023-02-06

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Hanqing Lou ,  Zinan Lin ,  Mahmoud Saad ,  Xiaofei Wang ,  Rui Yang

    IPC: H04B7/06 ,  H04L1/00 ,  H04L5/00

    Abstract: Dynamic puncturing in a wireless local area network (WLAN) supporting 320 MHz bandwidths is disclosed. In one example, a method includes a first station (STA1) transmitting a null data packet announcement (NDPA) frame including an indicator of an orthogonal frequency division multiple access (OFDMA) subchannel puncturing over a wireless medium and subsequently transmitting a null data packet (NDP) having a U-SIG field specifying an OFDMA puncturing pattern. The NDPA may indicate that the subsequent NDP, which preferably occupies an 80 MHz channel, includes the OFDMA puncturing pattern in its U-SIG field. The method may further include transmitting a beamforming report poll (BFRP) soliciting measurement by the receiving station (STA2) on active resources, e.g., subchannels which have not been punctured. STA2 may transmit a beamforming report (BFR) in response to the BFRP, the BFR including measurements of active resources excluding subchannels inactive due to static OFDMA puncturing or dynamic OFDMA puncturing.

    Method for efficient rediscovery and medium access for wake-up radios
    124.
    发明授权
    Method for efficient rediscovery and medium access for wake-up radios 有权

    公开(公告)号：US12250638B2

    公开(公告)日：2025-03-11

    申请号：US18239706

    申请日：2023-08-29

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Xiaofei Wang ,  Hanqing Lou ,  Joseph S. Levy

    IPC: H04W52/02 ,  H04W84/12 ,  H04W88/06

    Abstract: Methods and apparatuses are described herein for rediscovery and medium access for wake-up radios. For example, a wireless transmit receive unit (WTRU) may receive, via a first transceiver, a frame that includes a wake-up radio (WUR) operation element having a first counter value. The WTRU may deactivate the first transceiver and activate a second transceiver, wherein the first transceiver enters into a doze state and the second transceiver is in an awake state. The WTRU may then receive, via the second transceiver in the awake state, a WUR frame that includes a second counter value indicating an update of a plurality of basic server set (BSS) parameters associated with the first transceiver. On a condition that the second counter value is different than the first counter value, the WTRU may activate the first transceiver to update the plurality of BSS parameters, wherein the first transceiver enters into an awake state.

    MULTI-LINK STEERING AND CONTROL IN WLAN
    125.
    发明申请
    MULTI-LINK STEERING AND CONTROL IN WLAN 有权

    公开(公告)号：US20250048174A1

    公开(公告)日：2025-02-06

    申请号：US18921961

    申请日：2024-10-21

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Li Hsiang Sun ,  Hanqing Lou ,  Xiaofei Wang

    IPC: H04W28/02 ,  H04W76/20 ,  H04W84/12

    Abstract: Methods and apparatus for multi-link (ML) steering and control in wireless local area network (WLAN) are disclosed. A station (STA) multi-link device (MLD) may communicate over a plurality of links. The STA MLD may receive, from an access point (AP) MLD, on a first link of the plurality of links, a first frame comprising a ML element, where the ML element includes pausing information indicating a period of time during which the STA MLD will pause transmission and reception on the first link. The STA MLD may send, to the AP MLD, on a second link of the plurality of links and during the indicated period of time, uplink (UL) traffic, wherein the first link and the second link are multi-directional links. The STA MLD may be non-simultaneous transmit and receive (non-STR), and the AP MLD may be capable of STR.

    Interference Awareness Procedures for WLAN Systems
    126.
    发明申请
    Interference Awareness Procedures for WLAN Systems 有权

    公开(公告)号：US20250039915A1

    公开(公告)日：2025-01-30

    申请号：US18785586

    申请日：2024-07-26

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Hanqing Lou ,  Zinan Lin ,  Xiaofei Wang ,  Mahmoud Saad ,  Rui Yang

    IPC: H04W72/541

    Abstract: Systems and methods are described for interference awareness in wireless communication systems. A wireless station (STA) may detect an interference event comprising a transmission that will interfere or is interfering with a communication session of the STA with a second device, such as an access point (AP). The first device may transmit, to the second device, an identification of the interference event. The first device may receive, from the second device, a selection of an operation mode of a plurality of modes, transmitted responsive to receipt of the identification of the interference event. The first device may continue the communication session, with the second device, utilizing the selected operation mode.

    METHODS AND APPARATUSES FOR COORDINATED OPERATIONS IN A MULTIPLE ACCESS POINT MULTI-LINK DEVICE SET IN A WIRELESS LOCAL AREA NETWORK
    128.
    发明申请
    METHODS AND APPARATUSES FOR COORDINATED OPERATIONS IN A MULTIPLE ACCESS POINT MULTI-LINK DEVICE SET IN A WIRELESS LOCAL AREA NETWORK 有权

    公开(公告)号：US20240381465A1

    公开(公告)日：2024-11-14

    申请号：US18689640

    申请日：2022-10-06

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Xiaofei Wang ,  Hanqing Lou ,  Zinan Lin ,  Joseph Levy

    IPC: H04W76/15 ,  H04W48/08

    Abstract: A method performed by a multi-multi-link device (MMLD) architecture comprising a plurality of access points (APs) may comprise transmitting a frame, by an AP of the MMLD, wherein the frame may include a multi-multi-link device (MMLD) frame element which indicates that the AP is part of a multi-link device (MLD) that is a MMLD. The frame may comprise a beacon, short beacon, probe response, fast initial link setup (FILS) discovery frame, association response frame, or the like, or any appropriate combination thereof. The MMLD element may comprise one or more of an element identifier, length, MMLD identifier, MMLD media access control (MAC) address, partial reporting field, number of reported MLDs field and/or an MLD info field. The MLD may communicate with other MLDs of the multiple MLDs during a transmit wake time (TWT) service period (SP). The MLD may be in a doze state during non-TWT SPs.

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