Multi-segment bandwidth reservation protocol for DQDB subnetwork

The DQDB MAC Protocol standardized by the IEEE 802.6 Committee is the single segment bandwidth reservation scheme that reserves the bandwidth for only one segment in the distributed queue. Recently, the multi-segment bandwidth reservation schemes that reserve the bandwidth for not only one segment in the distributed queue but also a part of or all segments in the local node queue have been proposed. In this paper, we propose a new multi-segment bandwidth reservation protocol that can quickly react to changes of node's traffic and can quickly allocate bandwidth fairly and waste-free. We also evaluate the mean message transmission delay and the throughput convergence performance by simulation. As a result, the mean message transmission delay can be decreased and the throughput can be quickly converged to the fair bandwidth allocation.