Abstract: In a method for maintaining a group call in a mobile communication system, a mobile station is registered to a first base station and starts a group call. A traffic channel is reserved by the first base station for the group call, and the mobile station changes over to communicating on the traffic channel reserved from the first base station. To ensure an uninterrupted group call, a ‘follow me’ function is activated for the group call. In response to activating the ‘follow me’ function for the group call and reservation of a traffic channel by the first base station for the group call, a traffic channel is reserved from each of the desired second base station adjacent to the first base station for the group call. When some of the mobile stations participating in the group call change over to using a second base station adjacent to the first base station, the mobile station changes over to communicating on the traffic channel reserved from the base station for the group call.