Routing and Communication Protocols for Higher Throughput in Wireless Ad-Hoc Networks

Y. Numata and H. Higaki (Japan)


High Throughput, Mobile Routing, On-demand Routing Protocol, Ad-hoc Networks 1. Background and Objective Due to development of computer and network technolo gies, mobile computer networks have become widely avail able. Since mobile computers such as handheld PCs and PDAs and mobile sensor nodes which are required to be small and light weight have only limited battery capacity, a radius of a wireless signal transmission range is also lim ited. In order to achieve higher connectivity even


In a wireless mobile network with wireless multihop trans missions such as a mobile adhoc network and a wireless multihop access network, end-to-end bandwidth from a source mobile computer to a destination one is less than 1/3 of bandwidth of a wireless communication link due to ran dom waiting time for contention avoidance and RTS/CTS control for solving a hidden terminal problem. In this pa per, the authors propose an adhoc routing protocol and a message transmission protocol with transmission power control for achieving higher end-to-end bandwidth. The maximum end-to-end bandwidth in the proposed protocols is 1/2 of bandwidth of a wireless communication link. Sim ulation results show that the proposed protocol provides about 60% higher end-to-end bandwidth than a conven tional no power control protocol. In addition, it provides almost the same connectivity with conventional no power control protocols if density of mobile computers is suffi ciently high.

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