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    METHOD AND APPARATUS FOR MEDIUM ACCESS CONTROL FOR UNIFORM MULTIPLE ACCESS POINTS COVERAGE IN WIRELESS LOCAL AREA NETWORKS
    171.
    发明申请
    METHOD AND APPARATUS FOR MEDIUM ACCESS CONTROL FOR UNIFORM MULTIPLE ACCESS POINTS COVERAGE IN WIRELESS LOCAL AREA NETWORKS 审中-公开

    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.

    MULTI-BAND OPERATION FOR WIRELESS LAN SYSTEMS
    173.
    发明申请
    MULTI-BAND OPERATION FOR WIRELESS LAN SYSTEMS 审中-公开

    公开(公告)号：US20190297646A1

    公开(公告)日：2019-09-26

    申请号：US16436478

    申请日：2019-06-10

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Hanqing Lou ,  Monisha Ghosh ,  Xiaofei Wang ,  Robert L. Olesen

    IPC: H04W74/08 ,  H04B7/06 ,  H04W72/12

    Abstract: Systems, methods, and instrumentalities are provided to implement transmission scheduling. A multiband device may send a request via a first frequency band. The request may include a multiband Request to Send (MRTS) transmission. The request may be associated with a second frequency band and/or a beamforming training schedule. The first frequency band may be associated with a quasi-omni transmission and the second frequency band may be associated with a directional transmission. The first frequency band may be a 5 GHz band and the second frequency band may be a 60 GHz band. The multiband device may receive a multiband Clear to Send (MCTS) transmission via the first frequency band confirming the request. The multiband device may be configured to send a beamforming signal in accordance with the request, for example, via the second frequency band. The beamforming signal may be sent in accordance with a beamforming training schedule.

    WiFi efficient network transition
    174.
    发明授权
    WiFi efficient network transition 有权

    公开(公告)号：US10420041B2

    公开(公告)日：2019-09-17

    申请号：US16101966

    申请日：2018-08-13

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Xiaofei Wang ,  Guodong Zhang ,  Robert L. Olesen

    IPC: H04W52/34 ,  H04W48/14 ,  H04W48/08 ,  H04W52/24 ,  H04W84/12 ,  H04W48/12

    Abstract: A method and apparatus may be used to perform efficient network transitions. One or more of Probe Request frames that an AP may receive or process as valid may be modified by including a transmit power for the Probe Request frame. A Probe Request frame may be transmitted at less than full power. BSS transitions may be enhanced by indicating reasons for the transition, security information, or quality of service (QoS) information. Overhead associated with tracking long-sleeping STAs may be managed through the use of multiple values for a maximum idle period in a BSS.

    CLEAR CHANNEL ASSESSMENT (CCA) THRESHOLD ADAPTATION METHOD
    177.
    发明申请
    CLEAR CHANNEL ASSESSMENT (CCA) THRESHOLD ADAPTATION METHOD 审中-公开

    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.

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