DUPLEX BOARD APPARATUS FOR DUPLEXING NETWORK SYNCHRONIZATION BOARD OF BASE STATION CONTROLLER

摘要

PURPOSE: A duplex board apparatus for duplexing a network synchronization board of a base station controller is provided to perform a real time duplex switching and supply a stable clock by implementing the duplex switching as a hardware logic. CONSTITUTION: A board A duplex state input unit(210) checks whether its board is reset. A board B duplex state input unit(220) checks an active state and a dismounted state of the opposite board and informs a duplex condition judging unit of the corresponding state. The duplex condition judging unit(230) checks a lock state and software switching state, compares each state which has informed by the board A duplex state input unit(210) and the board B duplex state input unit(220), and determines a use(active/standby) state of the boards. The duplex condition judging unit(230) is positioned in each of the board A and the board B and determines the use state of a board where it belongs to.