| 摘要 |
A frequency changing method that can avoid a collision between uplink frequencies by using a simple algorithm. According to this method, a list of the frequencies of mobile stations whose receive status was OK and a list of the frequencies of mobile stations whose receive status was NG, requiring each mobile station to retransmit by changing its frequency, are constructed at a base station; then, for each of the frequencies in the receive status NG list, the amount of shift, Deltaf, predetermined in the system, is added and, if the result coincides with any one of the frequencies in the receive status OK list, Deltaf is added once again.
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