公开(公告)号：JP2001186552A

公开(公告)日：2001-07-06

申请号：JP2000029555

申请日：2000-02-07

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BOKU KEITAI ,  TEI KORETSU ,  SO HEICHU ,  RIN ZENBAI

IPC: H04B7/26 ,  H04J13/00 ,  H04W36/00 ,  H04W36/14 ,  H04W36/38 ,  H04W48/18 ,  H04W88/02 ,  H04W88/06 ,  H04W88/12 ,  H04W92/22 ,  H04Q7/22

Abstract: PROBLEM TO BE SOLVED: To provide a hard hand-off method between an asynchronous code division multiple access system and a synchronous code division multiple access system. SOLUTION: The method includes a 1st step, where a mobile terminal making a speech with an asynchronous CDMA base station reports the result of measurement to the asynchronous CDMA base station on the basis of the result of measurement of a signal strength of a pilot channel received from a synchronous CDMA base station adjacent to the asynchronous CDMA base station, a 2nd step where the asynchronous CDMA base station transmits a hand-off request message to the synchronous CDMA base station according to the reported measurement result, a 3rd step where the synchronous CDMA base station receiving the hand-off request message transmits information required to the execution of the hand-off to the asynchronous CDMA base station, and a 4th step where the mobile terminal receiving information from the asynchronous CDMA base station through a traffic channel, that is set at present utilizes the information to execute the hard hand-off to the synchronous CDMA base station.