Using Common Channel, Handoff method from $^{rd}$ generation Asynchronous W-COMA System to Synchronous System

공동채널을 이용한 3세대 비동기 W-COMA 시스템에서 동기 시스템으로 핸드오프를 위한 방식

In this paper, We introduce effective handoff method from W-COMA system of 3$^{rd}$ generation to 15-95 system of 2$^{nd}$ generation. In case of this handoff, Ms should know long code state using traffic channel, timing information and pilot offset of 26 synchronous system during the compressed mode. So We establish additional common channel in order to obtain handoff information. Common channel transmits same information from all base stations and provides MS with timing information of zero offset. long code state and timing of super frame for sync. channel. Therefore during the compressed mode. MS can obtain information for handoff using common channel..