Method and apparatus for base station selection in diversity...

H - Electricity – 04 – Q

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H04Q 7/34 (2006.01) H04Q 7/22 (2006.01) H04Q 7/30 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2240952

At CRC comprising circuit 21, CRC evaluation results transmitted from base station BS#1 and base station BS#2 are compared. In the case where CRC signals are both OK signals or NG, TPC comprising circuit 22 compares TPC evaluation results i.e. the number of "0" symbols in TPC bits, transmitted from base station BS#1 and base station BS#2. And, in the case of no deference in TPC signals, the number of "0" symbols in TPC bits in earlier several frames is evaluated. According to the method described above , control station MCC selects a base station then obtain an information signal from the base station.

On compare entre eux les résultats de l'évaluation CRC, qui sont émis depuis une station de base BS1 et une station de base BS2, à l'aide d'un circuit de comparaison CRC (21). Si les signaux CRC sont à la fois OK ou NG, on compare entre eux, à l'aide d'un circuit de comparaison PTC (22), les résultats de l'évaluation TPC, c'est-à-dire le nombre de fois que le bit TPV vaut "0", ces résultats étant émis depuis la station de base BS1 et la station de base BS2. Si on ne trouve pas de différence entre les signaux, on évalue le nombre de fois que le bit TPC vaut "0" dans plusieurs trames précédentes. Une station de commande MCC sélectionne, par conséquent, une station de base et obtient des signaux d'information provenant de la station sélectionnée.

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