Patent ID: 8285288

Claim:
A method of operating a user equipment intended to use a service in a wireless communication system having several base stations, comprising: monitoring, by said user equipment, a location of said user equipment; monitoring, by said user equipment, if a problem occurs or is imminent and storing information about the location of the user equipment at which said problem occurs in a memory of said user equipment; whenever a new area is entered, determining if any location within the area has been involved in a problem and information about alternative base stations, successful or not, is stored in the memory, wherein an alternative base station is deemed successful if the user equipment successfully camped on the alternative base station at an earlier time in response to the problem; in response to it being determined that any location within the area has been involved in a problem and also that information about alternative base stations, successful or not, is stored in the memory, starting a search for new alternative base stations before a problem occurs or is imminent, wherein the search is based on information about the alternative base stations stored in the memory, at exit from a base station, determining if a location covered by the base station has been involved in a problem and if the base station is not exited because of a problem; and in response to it being determined that a location covered by the base station has been involved in a problem and also that the base station is not exited because of the problem, removing the information about this base station in the memory in response to a determination that the location covered by the base station has been unproblematic for a predetermined number of exits.