BALANCING PAGING LOAD AND ASSIGNING TRACKING AREA UPDATES

摘要

A method for assigning a tracking area (TA) is disclosed. A mobility stat e of a wireless transmit/receive unit (WTRU) is determined and the TA is ass igned based on the determined mobility state. Also disclosed is a method for accessing a closed subscriber group (CSG) TA. A CSG TA identifier is receiv ed at a WTRU and is stored. A CSG TA broadcast is received and the broadcast CSG TA is accessed if an identifier of the broadcast CSG TA matches the sto red CSG TA identifier. Also disclosed is a method for changing a mobility st ate of- a WTRU. A current mobility state of the WTRU is determined and a pre determined metric of the WTRU is examined. The predetermined metric is evalu ated to determine if the metric has crossed a threshold and the mobility sta te is changed based on the evaluated metric.