期刊名称：Indian Journal of Computer Science and Engineering
印刷版ISSN：2231-3850
电子版ISSN：0976-5166
出版年度：2017
卷号：8
期号：6
页码：666-673
出版社：Engg Journals Publications
摘要：Wireless networks are widely used in the real world. Due to technology innovations in wirelessnetworks, wireless devices are able to participate in multimedia content transmission. Every wirelessdevice can act as transmitter and receiver of video content. However, there are many issues with videotransmission over wireless networks. The reasons are due to mobility of devices and resource constrainednature. There are many layers in OSI reference model. By using enhanced layered approach it is possibleto improve video transmission. However, joint optimization of different layers can help in increasingperformance of video transmission further. This is the motivation behind the cross layer design (CLD)approaches. In this paper, we proposed a CLD that considers two layers namely the PHY layer and theMAC layer. In PHY layer Scalable Video Coding (SVC) is employed in PHY layer in order to adapt torequired transmission rates and based on the dynamic capacity assignment is made to other layer, theMAC layer. We made simulations using NS2 to demonstrate proof of the concept. The results ofexperiments revealed the utility of the proposed CLD approach. Performance of the proposed CLD iscompared with basic video transmission approach in terms of latency, throughput, delay and PSNR.
关键词：Wireless networks; video transmission; cross layer design; PHY layer; MAC layer.
