Admission Control Based on Channel Time Classification for EDCA in IEEE 802.11e Networks

Author

Zhuang, Jinjun ; Ren, Fengyuan ; Lin, Chuang

Author_Institution

Dept. of Comput. Sci. & Technol., Acad. of Meteorol. Sci., Beijing

fYear

2006

fDate

22-24 Sept. 2006

Firstpage

1

Lastpage

4

Abstract

Admission control is an important QoS (quality of service) provision component for EDCA mechanism in IEEE 802.11e wireless LAN. Since EDCA is a contention-based random access mechanism and channel usage is hard to predict, lack of accuracy and adaptability is a common shortcoming of the existing admission control schemes. To overcome this we analyze the channel status in detail and find out that not all the channel idle time is available to the new flow. Then we further divide the channel occupation of the new flow into extra backoff time, collision time and transmission time, and give the prediction method of each kind of time. These analyses lay the foundation for an accurate admission control scheme. Simulation results show that the new scheme makes more reasonable admission decisions and has greater flexibility

Keywords

quality of service; telecommunication congestion control; wireless LAN; wireless channels; EDCA; IEEE 802.11e networks; IEEE 802.11e wireless LAN; QoS; admission control; backoff time; channel occupation; channel time classification; channel usage; collision time; contention-based random access mechanism; quality of service; transmission time; Accuracy; Admission control; Analytical models; Communication system traffic control; Computer science; Prediction methods; Protection; Quality of service; Traffic control; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on

Conference_Location

Wuhan

Print_ISBN

1-4244-0517-3

Type

conf

DOI

10.1109/WiCOM.2006.336

Filename

4149513