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Students' Projects

Route Repair in Mobile Adhoc Networks

Abhilash P


Mobile Adhoc Networks (MANET) are distributed, mobile, wireless, multihop networks that operate without pre-existing communication infrastructure, except for the mobile devices themselves. Several routing protocols both reactive and pro-active have been proposed to provide the self starting behavior needed for adhoc networks. The nature of the network coupled with the mobility of the devices, result in a large number of route breakages. The current approach in case of broken routes is to flag an error and re-initiate route discovery either at the source or at the intermediate node. Repairing these broken links is a costly affair in terms of routing overhead and delay involved. In this report, we propose a proactive approach called Routing Handoff, to repair broken routes, using the mobile devices in the vicinity of the broken link. The idea is incorporated into the AODV routing protocol. The results of the simulation indicate an increase in throughput under certain conditions. The improvement is a result of smaller overhead and delay. The approach may also be applied to other routing protocols with appropriate modification.

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