RANGING METHOD IN MOBILE COMMUNICATION SYSTEM AND RELAY STATION FOR THE METHOD

摘要

A ranging method in a mobile communication system and a relay station to which the method is applied are provided to improve the ranging efficiency by requesting information about a ranging code and a resource at a time in the centralized scheduling of a BS(Base Station). A ranging code checker(300) grasps states of ranging codes received from a mobile station. If the states of some of the ranging codes are in the continuous state or stopped state, a message generator(310) produces a message for requesting a CDMA(Code Division Multiple Access) assignment information element and a band. A message transmitter(320) transmits the generated message to a base station. A message receiver(330) receives the band for transmitting a ranging response message correspondingly to the request message and then receives an uplink map including the CDMA assignment information element.