Patent ID: 7636583

Claim:
A wireless telecommunication system for transmitting a plurality of streams from a transmission apparatus including a plurality of antennas to a receiving apparatus, comprising: transmission units, being equipped in the transmission apparatus, each of the transmission units transmitting a different stream; receiving units, being equipped in the receiving apparatus, each of the receiving units receiving streams transmitted from each of the transmission units; a measurement unit to measure reception quality or received power relating to a first stream from a first transmission unit in a first transmission apparatus being used for a telecommunication out of the transmission apparatuses and relating to a second stream from a second transmission unit in a second transmission apparatus other than the first transmission apparatus out of the transmission apparatuses, the second stream being a same in content as the first stream; a judgment unit to judge whether to carry out a handover by comparing the reception quality or received power relating to the first stream with the reception quality or received power relating to the second stream; and a changeover unit to carry out a handover for each of the streams by changing a transmission unit used for a telecommunication for a stream from the first transmission unit in the first apparatus to the second transmission unit in the second apparatus, if it is judged to necessary to carry out the handover.