UMA/GAN KEEP-ALIVE MECHANISIM IN WIRELESS COMMUNICATION NETWORKS

摘要

A wireless communication user terminal (200), and methods therein, wherein the terminal sends a keep-alive message upon expiration of a keep-alive timer, for example, a TU 3906 timer (250). In one embodiment, the timer is re-set upon transmission and/or receipt of certain messages before the timer expires. The keep-alive message is transmitted only upon expiration of the timer.