Patent ID: 7653080

Claim:
A station-side communicating apparatus that performs one-to-N communication with a plurality of subscriber devices via a time-division-multiple-access line, and controls allocation of upload bandwidth shared by the subscriber devices by acquiring bandwidth request amounts from the subscriber devices, the station-side communicating apparatus comprising: a control signal receiving unit configured to receive a bandwidth request amount from a subscriber device in the subscriber devices; an allocation determining unit that determines a bandwidth allocation for each of the subscriber devices in each data-collection cycle; and a history managing unit that calculates a request increment as a difference between the received bandwidth request amount and the bandwidth allocation for each of the subscriber devices, stores a history of plural calculated request increments determined from more than one time of data collections and plural bandwidth allocations for each of the subscriber devices, and calculates a target bandwidth request amount by dividing the received bandwidth request amount into the plural stored calculated request increments indicated by the history, wherein the allocation determining unit determines the bandwidth allocation for each of the subscriber devices based on the calculated target bandwidth request amount.