Patent ID: 7715840
Filing Date: 2010-05-11
Classification: H04M,H04W

Abstract:
1. A wireless apparatus for a vehicle, the apparatus comprising: a wireless device configured for running wireless communication with a base station that sends paging area information and for executing a location registration, which corresponds to the paging area information, to the base station; a volatile memory device configured for storing the paging area information to which the executed location registration corresponds; a nonvolatile memory device configured for storing the paging area information, which is stored in the volatile memory device after the wireless device executes the location registration; and a control device including when the driving source of the vehicle is determined to stop, the memory control unit reads out newest paging area information from the volatile memory device, and writes the newest read paging area information in the nonvolatile memory device; and in case that paging area information is newly received and stored in the volatile memory device during the predetermined time after the driving source of the vehicle is determined to stop, the registration control unit executes a determination whether the newly received paging area information, which is stored in the volatile memory, matches the paging area information stored in the nonvolatile memory device; and when the determination is negative, the registration control unit causes the wireless device to execute a location registration corresponding to the newly received paging area information and the memory control unit deletes the paging area information stored in the nonvolatile memory device.