System and method for performing soft handover in broadband wireless access communication system

Abstract

Disclosed is a system and method for performing soft handover in a broadband wireless access communication system. An anchor base station transmits first information including channel assignment information of an active non-anchor base station when it is determined that a mobile station is to perform the soft handover, and when there are signals to be transmitted to the mobile station from the non-anchor base station, the non-anchor base station transmits second information including channel assignment information of the anchor base station when it is determined that the mobile station is to perform the soft handover, and when there are signals to be transmitted to the mobile station from the anchor base station, and the mobile station receives signals from the anchor base station and the non-anchor base station corresponding to the first information and the second information when it is determined that the mobile station is to perform the soft handover.

1 . A method for performing a soft handover in a broadband wireless access communication system which includes a mobile station, an anchor base station providing communication services to the mobile station, and an active non-anchor base station different from the anchor base station, the soft handover of the mobile station scheduled to be performed toward the active non-anchor base station, the method comprising the steps of: 
 receiving a first MAP information which is in the DL-MAP of active non-anchor base station and indicates at least one burst from anchor base station or receiving a second MAP information which is in the DL-MAP of the anchor base station and indicates at least one burst from active non-anchor base station considering downlink channel state.    
   
   
       2 . The method as claimed in  claim 1 , wherein the first MAP information includes reference signal information and a connection identifier in the anchor base station, the reference signal information indicating a reference signal of the anchor base station.  
   
   
       3 . The method as claimed in  claim 1 , wherein the second MAP information includes reference signal information and a connection identifier in the anchor base station, the reference signal information indicating a reference signal of the active non-anchor base station.