MOBILE PACKET COMMUNICATION SYSTEM

摘要

A radio base station (2) allocates up-link radio resources to transmit data continuously in synchronization with a codec cycle of a mobile communication terminal (1) based on transmission-data basic information, and notifies this information, as an up-transmission schedule, to the mobile communication terminal (1) at the time of performing real-time IP data communications. The mobile communication terminal (1) controls the transmission of radio frames based on the up-transmission schedule. The mobile communication terminal (1) transmits IP data to a radio transmission path in an up-communication direction in synchronism with a codec timing of the mobile communication terminal (1). Thus, a delay resulting from a radio access is reduced, and a transfer delay between transmission and reception terminals is reduced.