BASE STATION AND RADIO COMMUNICATION SYSTEM
    111.
    发明公开

    公开(公告)号:US20240172201A1

    公开(公告)日:2024-05-23

    申请号:US18279248

    申请日:2022-02-08

    Applicant: SoftBank Corp.

    Inventor: Teruya Fujii

    Abstract: It is to provide a base station and a radio communication system that are capable of obtaining a desired communication quality by suppressing an influence of interference between a cell in an upper-airspace area and a cell in a terrestrial area, in case that a terminal apparatus is used in the upper-airspace area. A base station 20A of a mobile communication is provided with an antenna 26, a radio communication section 23 for forming a lower first cell 100A and a second cell 200A above the first cell, which are capable of using a same frequency band, and performing a radio communication via the antenna to and from a terminal apparatus 30A in the first cell and a terminal apparatus 40A in the second cell, and a resource assignment section for assigning a radio resource of the same frequency band to a communication with the terminal apparatus in any one cell of the first cell and the second cell in a same time period, and not assigning the radio resource of the same frequency band to communication with the terminal apparatus in an other cell. When the radio resource of the same frequency band is assigned to the terminal apparatus in the second cell, a transmission power control for reducing a transmission power is applied to the terminal apparatus to which the radio resource of the same frequency band is assigned.

    Detection of interference between multifeeder links in HAPS communication system

    公开(公告)号:US11968025B2

    公开(公告)日:2024-04-23

    申请号:US17442174

    申请日:2020-02-12

    Applicant: SoftBank Corp.

    Inventor: Ryoji Hirai

    CPC classification number: H04B7/18506 H04W16/28

    Abstract: It is detected of an interference between feeder links of communication relay apparatus, which tends to occur when the number of movable aerial-floating type communication relay apparatus increases in a same area. Plural feeder-link model elements are generated with respect to the plural communication relay apparatuses, wherein each of which a feeder-link receiving point corresponding to a position of the communication relay apparatus, a feeder-link transmitting point corresponding to a position of a gateway station, and a line segment connecting the feeder-link receiving point and the feeder-link transmitting point to each other in a three-dimensional space model. An occurrence of interference between feeder links is determined based on distances between the line segment and the feeder-link receiving point among feeder-link model elements different from each other on the three-dimensional space model.

    ANTENNA APPARATUS, SYSTEM, COMMUNICATION APPARATUS, DATA PROCESSING APPARATUS, AND COMPUTER READABLE STORAGE MEDIUM

    公开(公告)号:US20240030585A1

    公开(公告)日:2024-01-25

    申请号:US18480513

    申请日:2023-10-04

    Applicant: SoftBank Corp.

    CPC classification number: H01Q1/125 H01Q1/3283 H01Q21/06 H04B7/0404

    Abstract: An antenna apparatus is provided. The antenna apparatus includes an antenna array including a first plurality of antennas arranged by being shifted in a lateral direction by a distance of an odd integer multiple of a half period of a period of a level fluctuation depending on an antenna lateral position at a first distance that is predetermined as a distance between the antenna apparatus and an antenna apparatus of a communication partner. An antenna apparatus is provided. The antenna apparatus includes an antenna array including a first plurality of antennas arranged by being shifted in a height direction by a distance of an odd integer multiple of a half period of a period of a level fluctuation depending on an antenna height at a first distance that is predetermined as a distance between the antenna apparatus and an antenna apparatus of a communication partner.

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