| 摘要 |
<p>PURPOSE:To reduce the adverse effect of the quality deterioration of radio lines by discriminating the quality of them and variable setting the allocation of a time slot according to the discrimination result and to retain a communication quality. CONSTITUTION:A line quality discrimination means 31a provided on a control circuit 31 of a mobile station detects a bit error based on bit error detection information to be supplied from an error correction decoder 23 during communication, judging whether or not the line quality is reduced to less than the prescribed level. A slot change transmission/reception control means 31b notifies a piece of line quality deterioration detection information via a control channel to a base station when the deterioration of the line quality less than the prescribed level is detected by the means 31a. When information instructing the change of allocation of slots from the base station arrives, the use frequency of time slots to be used and its position are changed, executing the transmission/ reception control of the same signal by using the changed time slot. Thus, the influence of the quality deterioration of radio lines is reduced and the quality of the communication can be held.</p> |
