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A DRIVEN BACKUP ROUTING TABLE TO FIND ALTERNATIVE DISJOINT PATH IN AD HOC WIRELESS

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Author(s): Radwan S. Abujassar | Mohammed Ghanbari

Journal: International Journal of Computer Networks & Communications
ISSN 0975-2293

Volume: 3;
Issue: 4;
Start page: 46;
Date: 2011;
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Keywords: Index Terms | Network Protocols | ( DSDV) Destination Sequenced Distance Vector | DBRT (Driven Backup Routing Table) | Wireless Network | Mobile Ad Hoc Network

ABSTRACT
The performances of the routing protocols are important since they compute the primary path betweensource and destination. In addition, routing protocols need to detect failure within a short period oftime when nodes move to start updating the routing table in order to find a new primary path tothe destination. Meantime, loss of packets and end-to- end delays will increase thereby reducingthroughput and degrading the performance of the network. This paper proposes a new algorithm,DBRT (Driven Backup Routing Table), to improve the existing proactive protocols such as DSDV(Destination Sequenced Distance Vector) protocol by creating a backup routing table to providemultiple alternative routes. The DBRT algorithm identifies adjacent nodes for each node in the samerange and then selects one of these as a backup next hop according to the available path to thedestination. The results show that loss of data packets, throughput and end-to-end delay times betweensource and destination are improved. The results show that the new protocol does not degrade thenetwork’s performance despite sending extra messages to construct and update the new backuprouting table. Simulations (using an NS2 simulator) are undertaken to demonstrate the differencebetween using a DSDV protocol with or without the proposed schema.Index Terms; Network Protocols ;( DSDV) Destination Sequenced Distance Vector ; DBRT (Driven BackupRouting Table);Wireless Network; Mobile Ad Hoc Network
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