Skip to main content
Springer Nature Link
Log in

Efficient Back-off Mechanism for Multimedia Support in 802.11e EDCA Wireless Ad-Hoc Networks

  • Published:
Wireless Personal Communications Aims and scope Submit manuscript

Abstract

This paper presents an effective back-off mechanism to improve quality of service (QoS) for multimedia applications over the IEEE 802.11e enhanced distribution channel access (EDCA) standard. It can be done with proposed algorithm called dynamic fast adaptation for contention-based EDCA (DFA-EDCA) mechanism. The main concept of proposed DFA-EDCA mechanism is to use the exponential functions to adaptively tune the back-off parameters in IEEE 802.11e EDCA according to the changes on a network load within a short period. In this proposed mechanism an intra-access category (intra-AC) differentiation mechanism is provided to increase its back-off time randomly and achieve discrimination of same priority traffic on different stations. The performance evaluations have been conducted by using Network Simulator (NS-2). The simulation results show that the proposed DFA-EDCA mechanism has greatly outperformed the previous mechanisms such as non-linear dynamic adaptation scheme of the minimum contention window (CWmin-HA), dynamic adaptation algorithm of the maximum contention window (CWmax-adaptation), adaptive enhanced distributed coordination function and the conventional EDCA in terms of goodput, gain of goodput, packet delay, collision rate and channel utilization ratio (CUR). It has significantly reduced both packet delay and collision rate simultaneously together with an obviously increment in both goodput and CUR, which lead to the improvement in QoS for multimedia applications.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. The Internet Engineering Task Force (IETF). (2011). http://www.ietf.org/.

  2. Zhu H., Li M., Chlamtac I., Prabhakaran B. (2004) A survey of quality of service in IEEE 802.11 networks. IEEE Wireless Communications 11: 6–14

    Article  Google Scholar 

  3. Choi, S., Del Prado, J., & Mangold, S. (2003). IEEE 802.11e contention-based channel access (EDCF) performance evaluation. In IEEE international conference on communications ICC’03 (Vol. 2, pp. 1151–1156).

  4. IEEE Standard for Information Technology-Telecommunications and Information Exchange between Systems-Local and Metropolitan Area Networks-Specific Requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications. (2007). IEEE Std 802.11-2007 (Revision of IEEE Std 802.11-1999), p. C1-1184.

  5. Ojeda-Guerra, C., & Alonso-Gonzalez, I. (2008). Adaptive tuning mechanism for EDCA in IEEE 802.11e wireless LANs. In 14th European wireless conference EW 2008 pp. 1–7.

  6. Gannoune, L. (2006). A non-linear dynamic tuning of the minimum contention window (CWmin) for enhanced service differentiation in IEEE 802.11 ad-hoc networks. In 63rd IEEE vehicular technology conference VTC 2006, pp. 1266–1271.

  7. Romdhani, L., Ni, Q., & Turletti, T. (2003). Adaptive EDCF: Enhanced service differentiation for IEEE 802.11 wireless ad-hoc networks. In IEEE wireless communications and networking WCNC 2003 (Vol. 2, pp. 1373–1378).

  8. Gannoune, L., Robert, S., Tomar, N., & Agarwal, T. (2004). Dynamic tuning of the maximum contention window (CWmax) for enhanced service differentiation in IEEE 802.11 wireless ad-hoc networks. In 60th IEEE vehicular technology conference VTC 2004 (Vol. 4, pp. 2956–2961).

  9. IEEE Standard for Information Technology—Telecommunications and Information Exchange Between Systems—Local and Metropolitan Area Networks—Specific Requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 8: Medium Access Control (MAC) Quality of Service Enhancements. (2005). IEEE Std 802.11e-2005 (Amendment to IEEE Std 802.11, 1999 Edition (Reaff 2003), p. 0_1-189.

  10. Liang H. M., Zeadally S., Chilamkurti N. K., Shieh C. K. (2009) Optimizing channel access in wireless local area network environments with a new backoff approach. International Journal of Multimedia and Ubiquitous Engineering 4: 35–48

    Google Scholar 

  11. Dong, Y., Wang, Y., & Xia, Q. (2010). A load adaptive IEEE 802.11e EDCA backoff scheme with enhanced service differentiation. In 12th IEEE international conference on communication technology ICCT 2010 pp. 1056–1059.

  12. Conti, M., & Gregori, E. (2002). Optimization of bandwidth and energy consumption in wireless local area networks. In Performance Evaluation of Complex Systems: Techniques and Tools, pp. 181–211.

  13. Berthouex P. M., Brown L. C., Hambley D. F. (2002) Statistics for environmental engineers. Environmental and Engineering Geoscience 8: 244

    Article  Google Scholar 

  14. Malli, M., Ni, Q., Turletti, T., & Barakat, C. (2004). Adaptive fair channel allocation for QoS enhancement in IEEE 802.11 wireless LANs. In IEEE International Conference on Communications (Vol. 6, pp. 3470–3475).

  15. Patras, P., Banchs, A., & Serrano, P. (2011). A control theoretic scheme for efficient video transmission over IEEE 802.11e EDCA WLANs. Accepted for publication in ACM Transaction on Multimedia Computing Communications and Applications TOMCCAP.

  16. Gannoune, L. (2006). A comparative study of dynamic adaptation algorithms for enhanced service differentiation in IEEE 802.11 wireless ad hoc networks. In International Conference on Internet and Web Applications and Services/Advanced AICT-ICIW ’06, p. 31.

Download references

Author information

Authors and Affiliations

  1. Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia

    Aws Ali Shakir, Chee Kyun Ng, Nor K. Noordin & Alyani Ismail

Authors
  1. Aws Ali Shakir
    View author publications

    You can also search for this author inPubMed Google Scholar

  2. Chee Kyun Ng
    View author publications

    You can also search for this author inPubMed Google Scholar

  3. Nor K. Noordin
    View author publications

    You can also search for this author inPubMed Google Scholar

  4. Alyani Ismail
    View author publications

    You can also search for this author inPubMed Google Scholar

Corresponding author

Correspondence to Chee Kyun Ng.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Shakir, A.A., Ng, C.K., Noordin, N.K. et al. Efficient Back-off Mechanism for Multimedia Support in 802.11e EDCA Wireless Ad-Hoc Networks. Wireless Pers Commun 71, 439–466 (2013). https://doi.org/10.1007/s11277-012-0823-z

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11277-012-0823-z

Keywords