Patent ID: 6714784
Filing Date: 2004-03-30
Classification: H04W

Abstract:
A method for implementing a cell change for a mobile station in a packet-switched cellular radio system comprising a first base station, a second base station and a controlling unit controlling the operation of at least the first base station, comprising the steps of:establishing at the controlling unit knowledge about the mobile station's need for performing a cell change from the cell of the first base station to the cell of the second base station while the mobile station is still communicating with the first base station, transmitting from the controlling unit towards the mobile station through the first base station a first message in order to fix an oncoming first moment of time as the moment of performing cell change, said first moment of time being indicated in said first message by a frame number, and from said first moment of time onwards providing access for the mobile station to the cell of the second base station.