Patent ID: 7747266

Claim:
A method in a mobile station for use in selecting a communication network for communications, the method comprising the acts of: receiving, in the mobile station, a periodic location update timer value which is broadcasted by a wireless communication network, and storing the periodic location update timer in memory of the mobile station; causing a request for data service to be transmitted by the mobile station to a wireless communication network, and reattempting the transmitting of the request at least one time in response to identifying a rejection of the request; if the request for the data service is identified at the mobile station as being accepted in response to causing the request to be transmitted or reattempted the at least one time: operating the mobile station in the wireless communication network using the data service; if the request for the data service is identified at the mobile station as not being accepted in response to causing the request to be transmitted and reattempted the at least one time, performing the follows acts in the mobile station: setting the mobile station in a data service deregistered state; initializing a timer with an initial value that is less than the periodic location update timer value, and running the timer; and in response to an expiration of the timer, repeating the acts of causing the request for the data service to be transmitted and reattempted the at least one time.