Importance

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Abstract

Method and system for performing an optimised hand over between a first base station BS1 and a second base station BS2, wherein a mobile terminal MT requests a hand over. During hand over the loss of data has to be avoided and a fast retransmission should be provided. Further the hand over is preferably under the control of the mobile terminal MT initialising the hand over. The invention therefore provides a method and a system where an information stream is divided into segments and where each segment is numbered. The numbered segments are transmitted via the first communication path P1 and via the first base station (BS1) to the mobile terminal MT and at the same time they are stored on the second communication path P2 to the second base station (BS2), which is the one where the hand over is requested to. After the execution of the hand over one numbered segment identified by the exact number is requested via the second communication path P2. The numbered segment is then available for the mobile terminal MT and is exactly specified by the concrete number.

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First Claim