Yalemzewd, Negash (PhD)Ashebir, Dereje2020-11-242023-11-042020-11-242023-11-042017-06http://etd.aau.edu.et/handle/123456789/23459Due to bandwidth limitation and highly dynamic topology in Mobile Ad hoc Network systems, one of the major challenges is implementation of end-to-end quality of service support mechanisms. Transporting time-sensitive data over this network seriously affected if quality of service support mechanisms do not exist in the system. Hence, to transmit a video data to the end users with acceptable quality it is important to enhance the routing protocol to be able to select a route with the required metrics, such as bandwidth and delay metrics. In first section of this thesis, performance comparison was performed on the existing routing protocols to select suitable protocol for multimedia or video application. The selection was performed by comparing mainly the results of average end to end delay and packet delivery ratio. In the second section, the selected routing protocol is enhanced to incorporate quality of service mechanism on route selection process. Packet differentiation is enabled at MAC layer and also data packet life span controlling mechanism is implemented. For performance analysis of the protocols and proposed enhancement, we simulate network using Network simulator-2 and for pre and post processing (for encoding, decoding and testing the received video data) we apply Evalvid. Simulation results show that the proposed protocol performs well in both end to end delay and packet delivery ratio parameters. In general, we can conclude that adding quality of service metrics to routing protocol is mandatory and important to receive better video quality."en-USQuality-of servicerouting protocolsMANETsNS-2EvalvidThesis