WIRELESS COMMUNICATIONS SYSTEM
    1.
    发明专利

    公开(公告)号:JP2001238254A

    公开(公告)日:2001-08-31

    申请号:JP2001004770

    申请日:2001-01-12

    Abstract: PROBLEM TO BE SOLVED: To provide a wireless communications system where a service provider measures the radiation pattern of a base station antenna and automatically re-adjusts the radiation pattern by taking non-uniformity of an RF characteristic into account. SOLUTION: Measured values are collected and performance metric is derived from the measured values and analyzed in order to control an adjustable base station antenna. As examples of the adjustable base station antennas, a linear array antenna or a narrow beam antenna can be cited. The performance metric is derived from the measured values relating to sub-sectors in a sector of a service base station antenna. In order to conduct the correlation above, an approximate position of a mobile subscriber unit is decided from a measured time. A control signal sent to the adjustable base station antenna is calculated so that the performance metrics of sub sectors can be enhanced within a limitation to limit deterioration in the performance metric of the sub-sectors.

    4.
    发明专利
    未知

    公开(公告)号:DE60000815D1

    公开(公告)日:2003-01-02

    申请号:DE60000815

    申请日:2000-08-07

    Abstract: The present invention retunes adjustable base station antennas of a wireless communications system in order to improve performance metrics that are determined by measurements and that are associated with sub-sectors within the wireless communications system. The present invention calculates and applies control signals to the adjustable antennas to improve the performance in accordance with the performance metrics. Thus, the present invention obviates much of the labor that is required for retuning the wireless communications system with changing radio conditions.

    6.
    发明专利
    未知

    公开(公告)号:DE60000815T2

    公开(公告)日:2003-09-11

    申请号:DE60000815

    申请日:2000-08-07

    Abstract: The present invention retunes adjustable base station antennas of a wireless communications system in order to improve performance metrics that are determined by measurements and that are associated with sub-sectors within the wireless communications system. The present invention calculates and applies control signals to the adjustable antennas to improve the performance in accordance with the performance metrics. Thus, the present invention obviates much of the labor that is required for retuning the wireless communications system with changing radio conditions.

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