Bandwidth control apparatus, bandwidth control method, bandwidth control system, and bandwidth allocating apparatus

摘要

A bandwidth control apparatus which can reflect current operation states or effective rates of the access lines on bandwidth distribution is realized for effective utilization of bandwidths in a subscriber data transmission system. In a plurality of bandwidth control apparatuses accommodating a plurality of access lines in a bandwidth control system, multiplexed signal lines of respective bandwidth control apparatuses are connected to one another in cascade. Each bandwidth control apparatus acquires a bandwidth state of the access lines in the own apparatus and-notifies the other apparatuses of the bandwidth state of the own apparatus having been acquired. Therefore, the bandwidth control apparatus can allocate a transmission bandwidth to be controlled in the own apparatus using a ratio of the bandwidth state occupied by the own apparatus to a total bandwidth states occupied in the bandwidth control system, and can control transmission bandwidths of the respective access lines accommodated in the own apparatus.