Method and wireless communication system for locating wireless transmit/receive units
    18.
    发明授权
    Method and wireless communication system for locating wireless transmit/receive units 失效
    用于定位无线发射/接收单元的方法和无线通信系统

    公开(公告)号:US07541977B2

    公开(公告)日:2009-06-02

    申请号:US11014254

    申请日:2004-12-16

    IPC分类号: G01S1/24

    摘要: A method and system for locating a wireless transmit/receive unit (WTRU) is disclosed. A wireless communication system comprises a plurality of access points (APs). Each AP broadcasts a message indicating class-of-service (COS) types that the wireless communication system supports. After a WTRU registers with one of the plurality of APs, the WTRU receives the broadcast message. The WTRU sets a timer for location update in accordance with an application that the WTRU is running and the COS type with which it is associated. The WTRU transmits a location update frame to the APs at the expiration of the timer, and a location of the WTRU is calculated using the location update frame.

    摘要翻译: 公开了一种用于定位无线发射/接收单元(WTRU)的方法和系统。 无线通信系统包括多个接入点(AP)。 每个AP广播指示无线通信系统支持的服务等级(COS)类型的消息。 在WTRU向多个AP中的一个AP进行注册之后,WTRU接收该广播消息。 WTRU根据WTRU正在运行的应用和与其相关联的COS类型来设置用于位置更新的定时器。 WTRU在定时器到期时向AP发送位置更新帧,并且使用位置更新帧来计算WTRU的位置。