| 摘要 |
A method and system of background scanning of an evaluated system by a mobile station without missing paging frames on a registered system. The registered system is the system in which the mobile station has registered and will receive pages. The evaluated system is the system from which the mobile station must retrieve parameters. The various disclosed embodiments use the periodicity of the paging information to set a guard timer that will force the system back to the registered system before the paging information in the next time slot is missed. In an embodiment, after receiving a paging frame, the mobile station starts the guard timer (at 304) and begins evaluating another system by searching for system parameters. The delay time (A) is the time between receiving a paging frame and starting the guard timer. If the mobile station receives system parameters prior to the guard timer timing out (at 306), the guard timer is halted (at 310) and the mobile station is switched back to the registered system. If no system parameters are received, the guard timer will timeout (at 306) and the mobile station will switch back to the registered system with enough delay time (B and C) to receive the next paging frame.
|
