Channel access protocol for video packets in IEEE 802.11 networks

Jong-Ok Kim, Hideki Tode, Koso Murakami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The 802.11 DCF is contention-based channel access protocol, and medium access delay is highly increased with the number of stations in a service area. This severely affects on delay-sensitive video applications. In this paper, we focus on the MAC-layer solution for realizing high quality video transmissions in the 802.11 DCF networks. A new channel access protocol is proposed for real-time video, based on the timestamp (TS) of video packets. The TS information is carried by RTP header from the video application to the 802.11 MAC. For video packets with the same TS, they are simultaneously sent in a single channel access. Thus, additional contention and back-off processes can be avoided. The proposed TS-based access protocol can be easily implemented by the DCF with packet bursting. In addition, it is backward compatible to the legacy DCF. Simulation results show that the TS-based channel access achieves lower cumulative distributions of application-level video frame delay when compared to the DCF protocol.

Original languageEnglish
Title of host publication2005 International Conference on Wireless Networks, Communications and Mobile Computing
Pages498-503
Number of pages6
Volume1
DOIs
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event2005 International Conference on Wireless Networks, Communications and Mobile Computing - Maui, HI, United States
Duration: 2005 Jun 132005 Jun 16

Other

Other2005 International Conference on Wireless Networks, Communications and Mobile Computing
CountryUnited States
CityMaui, HI
Period05/6/1305/6/16

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kim, J-O., Tode, H., & Murakami, K. (2005). Channel access protocol for video packets in IEEE 802.11 networks. In 2005 International Conference on Wireless Networks, Communications and Mobile Computing (Vol. 1, pp. 498-503). [1549459] https://doi.org/10.1109/WIRLES.2005.1549459