Abstract

The route recovery algorithm is a crucial part of an ad hoc routing protocol. Designing an efficient and fast route recovery mechanism scheme without incurring extra overheads or delays to repair the broken link is a desirable goal for any routing protocol. The route recovery algorithm in reactive routing protocols like AODV occurs only after a link failure is detected. However, we propose a new route discovery mechanism called Route Migration over Multiple link failure in Multi-Channel (RMMMC), which combines multiple paths and channels to provide a disjointed alternative route. When link failure is detected, the RMMMC reroutes the data packet through the alternative route in alternative channels that have been previously discovered. Furthermore, the RMMMC is resilient to multiple link failures. Unlike other route recovery approaches, nodes in RMMMC are considered to be equipped with a single transceiver. The RMMMC scheme is implemented and extensively evaluated by using an ns-2 simulator. Simulation results show that the proposed scheme achieves a better packet delivery ratio, throughput and reduces the routing overhead and end-to-end delay in a dense network.

Highlights

  • A Mobile Ad hoc Network (MANET) is a collection of mobile nodes which form a self-configurable and selforganising network without relying on any fixed infrastructure

  • Mobile nodes in MANET communicate directly, if they are in the same transmission range, while those which are not can use other nodes to relay their packets in a multi-hop manner

  • We provide a brief review of some of the multipath routing protocols based on AODV, and briefly describe the multichannel routing protocol used in this work

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Summary

INTRODUCTION

A Mobile Ad hoc Network (MANET) is a collection of mobile nodes which form a self-configurable and selforganising network without relying on any fixed infrastructure. Wireless ad hoc protocols such AODV [1] and DSR [2] deploy two mechanisms to detect link failure, namely, a Hello message and link layer feedback. Such mechanisms enable nodes to obtain an immediate knowledge to verify that the next-hop is within their transmission range and is likely to receive the packet. A reliable routing protocol called Route Migration over Multiple link failure in Multi-Channel with a single radio interface (RMMMC) is proposed It introduces a new route discovery mechanism, which utilises multiple channels to provide a seamless alternative multi-hop path when link failure is detected.

RELATED WORK
PROBLEM STATEMENT
PROPOSED PROTOCOL
Local Connectivity in RMMMC protocol
Routing Tables
Control Packets
Multiple Links Failure
SIMULATION PARAMETERS AND PERFORMANCE
PERFORMANCE RESULTS
CONCLUSIONS AND FUTURE WORK
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