System and method for data transmission and contention control

摘要

A data transmission control information acquisition section (8) generates data transmission control information based on control information exchanged between applications of a data transmitter and a data receiver before data transmission is started. A data transfer control section (9) determines a bandwidth to be used by the data transmission, transmission start time, etc. in a shared transmission medium (4) in a unified manner based on the data transmission control information and current bandwidth use conditions, and transmits the thus-determined information to the data transmitter (1). The data transmitter (1) transmits data to the data receiver (2) via the transmission medium (4) under unified management.