Comparison and Enhancement of Routing Protocols for Video Transmission in Mobile Ad Hoc Networks
No Thumbnail Available
Date
2017-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Due 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."
Description
Keywords
Quality-of service, routing protocols, MANETs, NS-2, Evalvid