Bandwidth Reservation Protocol For Multirate Anypath Routing In Wireless Mesh Networks

Nowadays, wireless mesh networks appear and the base idea of wireless meshnetworks is to let each node can either transmit or receive packets. Each node can joinin the backbone networks through multi-hop. This leads to build a more scalable androbust wireless networks. In wireless mesh networks (WMNs), more and more ap-plications, especially Video-on-Demand (VoD) services, appear to have strict require-ments on guaranteed bandwidth. Most of the existing bandwidth reservation protocolsfor WMNs follow the approaches from wired networks, and cannot well adapt to thecharacteristics of wireless communication media, such as lossy and dynamic quality ofwireless links. In this paper, we present the frst Bandwidth REservation protocol formultirate anypath routing in WMNs, namely BREW. BREW aggregates bandwidthsfrom multiple anypath routes to improve the fow acceptance ratio and the system-widethroughput, and can be integrated with most of the existing opportunistic routing (OR)protocols, especially the most efcient multirate anypath routing protocols. As far aswe know, BREW is the frst bandwidth reservation protocol with admission control formultirate anypath routing in WMNs. The design of BREW has three closely connectedcomponents:(A) network pruning and multirate anypath routing module;(B) anypathroute capacity estimation module;(C) admission control and bandwidth reservationmodule. These three modules work together to make admission control. The majoradvantageofBREWisthatitenablesdividingalargedatafowintoseveralsmallersubdata fows whose bandwidths are reversed on diferent anypath routes. Furthermore,we extend BREW into multicast naturally. Our numerical results show that BREWoutperforms than those existing protocols.