Hybrid mesh ad-hoc on-demand distance vector routing protocol

Authors:
Asad Amir Pirzada;Marius Portmann;Jadwiga Indulska
Affiliations:
National ICT Australia Limited, Brisbane, QLD, Australia;National ICT Australia Limited, Brisbane, QLD, Australia and The University of Queensland, Brisbane, QLD, Australia;National ICT Australia Limited, Brisbane, QLD, Australia and The University of Queensland, Brisbane, QLD, Australia
Venue:
ACSC '07 Proceedings of the thirtieth Australasian conference on Computer science - Volume 62
Year:
2007

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Abstract

Wireless Mesh Networks (WMNs) have recently gained increasing attention and have emerged as a technology with great potential for a wide range of applications. WMNs can be considered as a superset of traditional mobile ad-hoc networks (MANETs), where the network is comprised of mobile client devices (MESH_CLIENTs). In addition to MESH_CLIENTs, a WMN can also contain relatively static devices called mesh routers (MESH_ROUTERs). Such hybrid WMNs are characterized by a high level of heterogeneity, since static MESH_ROUTERs are typically much less resource constrained than mobile MESH_CLIENTs, and are also often equipped with multiple radio interfaces. Traditional ad-hoc routing protocols do not differentiate between these types of nodes and therefore cannot achieve optimal performance in hybrid WMNs. In this paper, we propose simple extensions to the Ad-hoc On-demand Distance Vector (AODV) routing protocol, which aim to take advantage of the heterogeneity in hybrid WMNs by preferentially routing packets via paths consisting of high capacity MESH_ROUTERs. In addition, we implement a simple channel selection scheme that reduces interference and maximizes channel diversity in multi-radio WMNs. Our simulation results show that in hybrid WMNs, our extensions result in significant performance gains over the standard AODV protocol.