Patent ID: 7746898
Filing Date: 2010-06-29
Classification: H04J,H04L

Abstract:
1. A band allocation method in a communication system in which a plurality of nodes and a managing apparatus are coupled via a network and each node requests a transfer band with respect to the managing apparatus, comprising: sending tolerable values of a transfer rate and a compression rate from each node to the managing apparatus at a time of a resetting; sending a transfer rate and a compression rate that are to be actually used from each node to the managing apparatus when making a request for a transfer band after the resetting; detecting a node that cannot secure the transfer band and calculating a lacking bandwidth, by an insufficient transfer bandwidth calculation control circuit in the managing apparatus, with respect to the request for the transfer band; detecting a node that can reduce a transfer band thereof and specifying a transfer rate and a compression rate with respect to the node that can reduce the transfer band thereof, by the insufficient transfer bandwidth calculation control circuit in the managing apparatus, based on the tolerable values of the transfer rate and the compression rate of each node and the transfer rate and the compression rate included in the request for the transfer band; and specifying the transfer band, the transfer rate and the compression rate as requested by the request for the transfer band, by the insufficient transfer bandwidth calculation control circuit in the managing apparatus, with respect to the node that cannot secure the transfer band.