| 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.
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