Analysis of the 802.11e enhanced distributed channel access function

Author

Inan, Inanc ; Keceli, Feyza ; Ayanoglu, Ender

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of California, Irvine, CA

Volume

57

Issue

6

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

1753

Lastpage

1764

Abstract

We propose an analytical model for the performance analysis of the enhanced distributed channel access (EDCA) function of the IEEE 802.11e standard. The proposed discrete-time Markov chain (DTMC) model incorporates the main quality-of-service (QoS) features of 802.11e, namely, contention window (CW), arbitration interframe space (AIFS), and transmit opportunity (TXOP) differentiation. Due to its specific design, the proposed DTMC model jointly considers the state of the medium access control (MAC) layer buffer and the MAC differentiation mechanisms which facilitates a novel performance analysis framework at an arbitrary traffic load. Analytical and simulation results are compared to demonstrate the accuracy of the proposed approach for varying traffic load, EDCA parameters, and MAC layer buffer space.

Keywords

Markov processes; access protocols; discrete time systems; quality of service; telecommunication standards; wireless LAN; IEEE 802.11e standard; MAC layer buffer space; arbitration interframe space; contention window; discrete time Markov chain model; distributed channel access function; medium access control; quality of service; transmit opportunity differentiation; Analytical models; Centralized control; Communication system control; Helium; Media Access Protocol; Performance analysis; Pervasive computing; Quality of service; Telecommunication traffic; Wireless LAN; WLAN, 802.11e MAC, EDCA, QoS, analytical modeling, performance analysis.;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2009.06.0701132

Filename

5089514