A MULTI-SEGMENT BANDWIDTH RESERVATION PROTOCOL FOR A DQDB SUBNETWORK

The DQDB MAC Protocol standardized by the IEEE 802.6 Committee is a si ngle segment bandwidth reservation scheme that only reserves bandwidth for one segment in the distributed queue. Recently, multi-segment ban dwidth reservation schemes that reserve bandwidth for not only one seg ment in the distributed queue but also a part of or all segments in th e local node queue have been proposed. In this paper, we propose a new multi-segment bandwidth reservation protocol that can quickly react t o changes in a node's traffic and can quickly allocate the bandwidth f airly and waste-free. We also evaluate the mean message transmission d elay and throughput convergence performance by simulation. As a result , it is shown that the mean message transmission delay can be decrease d and the throughput can be quickly converged to fair bandwidth alloca tion.