The book release method in a wireless packet communication system

摘要

PROBLEM TO BE SOLVED: To avoid loss of reservations on the way and continuity of meaningless packet transmissions in the radio packet communication system, in which the R-ALOHA system of the reservation system is adopted for transmission of an incoming packet from a mobile station to a base station and the CDMA system is adopted for a multiple address communication system. ;SOLUTION: A base station 20 uses a signal detection section 24 to monitor the presence of valid data in a slot provided with reservation and a prediction control section 25 references a monitor result of a reservation provision slot of other code channel when no valid data are detected. When number of reservation provision slots not detecting the valid data exist more than a preset threshold level or over, the reservations for all the reservation provision slots are not canceled. Furthermore, when valid data are not detected consecutively for a preset number of times or over which has been previously preset from the same reservation provision slot, the reservation of the slot is canceled.;COPYRIGHT: (C)1998,JPO