Performance analysis of transport layer protocols for MPEG4 video traffic in IEEE 802.11e ad-hoc wireless networks

摘要

The IEEE 802.11e standard is a complement to the IEEE 802.11 family that provides Quality of Service (QOS) in wireless networks at MAC layer level. For the multimedia applications such as video MPEG4, IEEE 802.11e provides a contention based MAC function EDCF (Enhanced Distributed Coordination Function). EDCF offers differentiated services for different type of traffic flows. In this paper the IEEE 802.11e has been evaluated by using different transport layer protocols; TCP, UDP and RTP for the transmission of MPEG4 traffic on wireless medium using IEEE 802.11e MAC layer protocol in ad-hoc mode. In this work a comparative performance analysis of these transport layer protocols with IEEE 802.11e standard, has been performed using NS2 simulator. The performance parameters measured are throughput, end to end delay and packet drop. The simulation results showed that for MAC layer IEEE 802.11e standard, RTP is the most suitable protocol for the transmission of MPEG4 type video traffic on wireless medium in ad-hoc mode.