Provisioning QoS Guarantee by Multipath Routing and Reservation in Ad Hoc Networks

In this paper, a QoS multipath source routing protocol (QoS-MSR) is proposedfor ad hoc networks. It can collect QoS information through route discovery mechanism of multipathsource routing (MSR) and establish QoS route with reserved bandwidth. In order to reserve bandwidthefficiently, a bandwidth reservation approach called the multipath bandwidth splitting reservation(MBSR) is presented, under which the overall bandwidth request is split into several smallerbandwidth requests among multiple paths. In simulations, the authors introduce Insignia, an in-bindsignaling system that supports QoS in ad hoc networks, and extend it to multipath Insignia(M-Insignia) with QoS-MSR and MBSR. The results show that QoS-MSR routing protocol with the MBSRalgorithm can improve the call admission ratio of QoS traffic, the packet delivery ratio, and theend-to-end delay of both best-effort traffic and QoS traffic. Therefore, QoS-MSR with MBSR is anefficient mechanism that supports QoS for ad hoc networks.

在Ad Hoc网络中利用多径路由和预留提供服务质量保证

无线通信技术和计算机网络技术的发展为无线移动Ad Hoc网络的产生奠定了基础。Ad Hoc网络，不论是军用还是民用都有着广泛的应用价值和重要的研究意义。在Ad Hoe网络研究中，因为每个节点兼具路由器的功能，所以路由是一个非常重要的研究问题。传送具有QoS保证的业务也是Ad Hoc网络需要解决的问题之一。这对于带宽较低、通信线路质量受限的Ad Hoc网络而言，是很大的挑战。所以，如何在Ad Hoc网络条件下合理地利用无线网络资源，实现有针对性的QoS保证也具有现实意义。