Apparatuses and methods for handling attach procedure in a mobile communication system

摘要

A user equipment for handling an attach procedure with a service network is provided. In the user equipment, a wireless module transmits an attach request message to the service network and receives an attach accept message replied to the attach request message from the service network, while a controller determines whether to accept the attach accept message according to a first parameter accompanying the attach accept message and sends an attach complete message, via the wireless module, to the service network in response to the attach accept message being accepted.

主权项

1. A user equipment, handling an attach procedure with a service network, comprising:
a wireless module configured to transmit an “ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST” message in accordance with the 3rd Generation Partnership Project (3GPP) technical specifications to the service network and configured to receive an attach accept message replied to the “ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST” message from the service network; and a controller configured to determine whether to accept the attach accept message according to a first parameter accompanying the attach accept message, and in response to the attach accept message not being accepted, the controller configured to resend, via the wireless module, the “ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST” message with a Resent cause Information Element (IE) indicating that the “ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST” message is being resent due to the attach accept message not being acceptable, to the service network, thereby enabling the service network to adjust the first parameter to be included in another attach accept message corresponding to the resent attach accept message.