Access method of a mobile station for extending cell service range and a method for serving an extended range cell in a mobile communication system

摘要

A method for a mobile station (MS) to access a base transceiver station (BTS) for a first time in order to extend a cell service range of the BTS in a mobile communication system employing a time division multiple access, wherein the MS (1) receives extended range cell system information from the BTS, which includes position information of the BTS and information reporting a fact that the MS is located in an extended range cell; (2) computes a distance from the BTS by means of the position information of the BTS and position information of the MS itself; and (3) computes an estimated extended timing advance (ETA) by means of the computed distance from the BTS, processing the estimated ETA by means of a predetermined value for considering an error, and generates an initial extended timing advance (IETA).