BALANCING PAGING LOAD AND TRACKING AREA UPDATES

摘要

A method for assigning a tracking area (TA) is disclosed. A mobility state of a wireless transmit/receive unit (WTRU) is determined and the TA is assigned based on the determined mobility state. Also disclosed is a method for accessing a closed subscriber group (CSG) TA. A CSG TA identifier is received 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 stored CSG TA identifier. Also disclosed is a method for changing a mobility state of a WTRU. A current mobility state of the WTRU is determined and a predetermined metric of the WTRU is examined. The predetermined metric is evaluated to determine if the metric has crossed a threshold and the mobility state is changed based on the evaluated metric.

主权项

1. A wireless transmit/receive unit (WTRU) for use in a wireless communication network, the WTRU comprising:
circuitry configured to:
receive a list of closed subscriber group (CSG) cell identities that the WTRU is permitted to access;camp on a CSG cell whose identity is not in the list; andon a condition that the WTRU is camping on a CSG cell whose identity is not on the list, transmit a tracking area update request message to the wireless communication network, wherein the tracking area update request message is transmitted to balance a signaling load; andreceive, in response, a tracking area update accept message from the wireless communication network.