Method and wireless communication system for locating wireless transmit/receive units

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.