Comparison And Enhancement Of Routing Protocols For Video Transmission In Mobile Ad Hoc Networks

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Due to bandwidth limitation and highly dynamic topology in Mobile Ad hoc Networkrnsystems, one of the major challenges is implementation of end-to-end quality of servicernsupport mechanisms. Transporting time-sensitive data over this network seriously affected ifrnquality of service support mechanisms do not exist in the system. Hence, to transmit a videorndata to the end users with acceptable quality it is important to enhance the routing protocol tornbe able to select a route with the required metrics, such as bandwidth and delay metrics. rnrnIn first section of this thesis, performance comparison was performed on the existing routingrnprotocols to select suitable protocol for multimedia or video application. The selection wasrnperformed by comparing mainly the results of average end to end delay and packet deliveryrnratio. In the second section, the selected routing protocol is enhanced to incorporate qualityrnof service mechanism on route selection process. Packet differentiation is enabled at MACrnlayer and also data packet life span controlling mechanism is implemented. rnrnFor performance analysis of the protocols and proposed enhancement, we simulate networkrnusing Network simulator-2 and for pre and post processing (for encoding, decoding andrntesting the received video data) we apply Evalvid. rnrnSimulation results show that the proposed protocol performs well in both end to end delayrnand packet delivery ratio parameters. In general, we can conclude that adding quality ofrnservice metrics to routing protocol is mandatory and important to receive better videornquality."

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Comparison And Enhancement Of Routing Protocols For Video Transmission In Mobile Ad Hoc Networks

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