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

fYear

2010

fDate

23-25 Sept. 2010

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WICOM.2010.5600794

Filename

5600794