| 摘要 |
PURPOSE:To quickly collect information of many mobile stations by allowing a base station to transmit a synchronizing signal to plural mobile stations with a prescribed frame length, and transmitting its own station information to one of divided time slots from each mobile station when a base station is possible for transmission to the slot. CONSTITUTION:A data (b) including a periodic signal in matching with a time slot TSB having a prescribed frame length from a base station BC is transmitted to plural mobile stations M. The TS of T0-Tn is set after the TSB and when the mobile station M transmits its own station information (a) to the base station BC, the TS in TST1-Tn corresponding to the transmission time is used. The mobile station can recognize the information transmitted from the base station with the TSB whether its own station transmission information is received surely by the base station or not. When plural mobile stations transmit information at the same TS and no reception confirming information from the base station is obtained due to collision, etc., the fastest information is retransmitted in the TS selected among the TSTl after K slots from the TST1 with an equal probability. The computing processing for this purpose is conducted at TST0. |
