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    WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD
    2.
    发明申请
    WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20180242366A1

    公开(公告)日：2018-08-23

    申请号：US15747899

    申请日：2016-08-15

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Riichi KUDO ,  Hirantha Sithira ABEYSEKERA ,  Munehiro MATSUI ,  Takeo ICHIKAWA ,  Yasushi TAKATORI ,  Masato MIZOGUCHI

    IPC: H04W74/08 ,  H04W72/10 ,  H04L12/863

    Abstract: Provided is a wireless communication system which performs downlink data transmission based on a transmission opportunity acquired by a wireless access point (hereinafter referred to as TXOP access) or a transmission opportunity acquired by a wireless station and granted to the wireless access point (hereinafter referred to as RXOP access), when performing the downlink data transmission from the wireless access point to the wireless station based on a random access scheme, in which the wireless access point includes a control unit performing, on a transmission buffer which sequentially stores data frames to be transmitted for each of wireless stations, processing which lowers an order of priority of the data frames which are to be destined for the wireless station A by the TXOP access at the transmission buffer according to a transmission status of the data frames destined for a wireless station A by the RXOP access.

    WIRELESS ENVIRONMENT INFORMATION COLLECTION SYSTEM AND METHOD
    8.
    发明申请
    WIRELESS ENVIRONMENT INFORMATION COLLECTION SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20180206134A1

    公开(公告)日：2018-07-19

    申请号：US15744215

    申请日：2016-08-01

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Riichi KUDO ,  Hirantha Sithira ABEYSEKERA ,  Munehiro MATSUI ,  Takeo ICHIKAWA ,  Masato MIZOGUCHI

    IPC: H04W24/08 ,  H04W74/08 ,  H04W84/12

    CPC classification number: H04W24/08 ,  H04W24/00 ,  H04W24/10 ,  H04W74/0816 ,  H04W84/12

    Abstract: A wireless environment information collection system in which the wireless environment information management unit includes a unit which generates and outputs a channel measurement frame which determines the wireless stations performing stopping of communication over the first frequency channel for a fixed time, starting of measuring channel utilization of the first frequency channel, or both the stopping and the starting among the managed wireless stations, and the managed wireless stations include a unit which performs, at a time designated by the channel measurement frame from the wireless environment information management unit, the stopping of the communication over the first frequency channel, the measuring of the channel utilization of the first frequency channel, or both the stopping and the measuring, and which outputs the obtained wireless environment information to the wireless environment information management unit through the wired network or the wireless network.

    Wireless Communication System And Wireless Communication Method
    10.
    发明申请
    Wireless Communication System And Wireless Communication Method 有权

    公开(公告)号：US20230080036A1

    公开(公告)日：2023-03-16

    申请号：US17989210

    申请日：2022-11-17

    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    Inventor： Riichi KUDO ,  Hirantha Sithira ABEYSEKERA ,  Munehiro MATSUI ,  Shoko SHINOHARA ,  Yasushi TAKATORI ,  Takeo ICHIKAWA ,  Masato MIZOGUCHI

    IPC: H04W74/08 ,  H04W72/08 ,  H04W72/14

    Abstract: Provided is a wireless communication system in which, based on a random access scheme, a transmission opportunity (TXOP) acquired by a wireless access point is granted to a wireless station when performing uplink data transmission from the wireless station to the wireless access point and the TXOP acquired by the wireless station is granted to the wireless access point when performing downlink data transmission from the wireless access point to the wireless station, the system includes a scheduling unit for TXOP granting determining one or more wireless stations having a quality of an uplink data transmission lower than a prescribed value as TXOP responders to which the wireless access point grants the TXOP, and determining one or more wireless stations having a quality of a downlink data transmission lower than the prescribed value as TXOP holders which grant the TXOP to the wireless access point.

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