| 摘要 |
PURPOSE:To reduce protocol information quantity at the switching of a radio zone by providing a reservation file storing a frequency and a time slot used when a mobile station is moved to an adjacent radio zone on a mobile station. CONSTITUTION:When a mobile station 311 running in a radio zone 11 is moved to an adjacent zone 16, the frequency and the time slot to be used are designated in advance by a reservation file 1011 possessed by the mobile station. Thus, the mobile station makes communication with the base station 26 by using the combination of the designated frequency and time slot. On the other hand, the frequency and time slot used when the mobile station 311 is moving are reserved to the base station 26 and the mobile station 311 is running in the zone 11. Thus, the protocol information quantity received and given between the base station and the mobile station at the switching of the radio zone is reduce and the number of combinations of frequencies and time slots is saved. |
