Title :
The Quality Optimization of Wireless Video Based on MAC Model
Author :
Chang, Guo ; Yong, Liu
Author_Institution :
Sch. of Inf. & Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, an improved IEEE802.11 WLAN analytical model under unsaturated traffic conditions was proposed. It adapts Distributed Coordination Function (DCF) models to describe all the states. Compared with other MAC models, two special states were added for this model. One is D state meaning whether the medium is sensed to be available for a time interval greater than DIFS, so the sender can transmit the packets, and the other is the idle state meaning the MAC queue is empty and no packet needs to be sent. The optimal retransmissions times can be deduced from the MAC model, which can guide to cross-layer optimize the video transmission.
Keywords :
IEEE standards; access protocols; telecommunication traffic; video communication; video signal processing; wireless LAN; DCF model; IEEE802.11 WLAN analytical model; MAC model; distributed coordination function models; media access control; network traffic; video transmission; wireless video quality optimization; Analytical models; Delay; IEEE 802.11 Standards; Load modeling; Markov processes; Optimization; Wireless communication;
Conference_Titel :
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-3708-5
Electronic_ISBN :
978-1-4244-3709-2
DOI :
10.1109/WICOM.2010.5600794
