Patent ID: 7412621

Claim:
A processor duplexing apparatus in a mobile communication system, comprising: an active board; and a standby board, wherein the boards have a real time operating system (RTOS) which detects a need for and executes a dual switching operation, wherein each of the active board and the standby board includes: a processor for loading the RTOS which performs a duplexing operation without intervention of application software; a memory circuit to store at least one of programs or data required for system operation; a PCI controlling circuit to directly access a memory of a self side board at a time of dual switching, and to dump contents of the memory of the self-side board to a memory of an opposing board; an ethernet controller to transmit data between the self-side board and the opposing board through an ethernet channel; and a duplexing control to prevent memory access collision between the self-side board and the opposing board.