Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (4): 120-124.doi: 10.13190/jbupt.200704.120.086

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An Improved AODV Algorithm for WiFi Mesh Networks

WEI Yi-fei,ZHANG Yong,SONG Mei,SONG Jun-de   

  1. (School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2006-07-27 Revised:2007-01-19 Online:2007-08-30 Published:2007-08-30
  • Contact: WEI Yi-fei

Abstract:

A routing algorithm utilizing the multirate and multi-range characteristic in wireless fidelity (WiFi) mesh networks is proposed. A cross-layer design scheme is newly introduced. The mechanism of adaptive data-rate transition in physical layer is considered in this algorithm. The maximum data-rate is used as the performance metric when establishing the route, and the minimum hop-count is regarded as a criterion under the same data-rate. The method to discover the path under different datarate is presented. It will adjust the transmitted power level and expand the transmission range step by step when failed to establish the route within the given area. When the proposed algorithm is adopted, the Ad hoc on-demand distance vector (AODV) routing can be improved as WiFi-AODV. Simulation results show that WiFiAODV is capable of establishing a route which has high data-rate, short linkdelay and greate network throughput.

Key words: wireless mesh networks, mobile Ad hoc networks, Ad hoc ondemand distance vector, routing protocol, multi-rate

CLC Number: