| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile communication system, having a non-monotonous relation between terminal moving speed (Doppler frequency) and transmission quality deterioration, which can improve the communication quality and increase channel capacity. SOLUTION: The mobile communication system includes a detection means 20B for detecting information(referred to as information speed, hereinafter) on the mobile speed (referred to as terminal mobile speed, hereinafter) of a mobile terminal 2, on the basis of a signal received from the mobile terminal 2; selection control means 20D and 27 for selecting operating frequency is in a higher frequency band, the higher the speed information detected by the detection means 20B is, selecting operating frequency in a lower frequency band, the lower the speed information is, and allocating the operating frequency to the mobile terminal. |
