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Admission Region of Multimedia Services for EDCA in IEEE 802.11e Access Networks

  • Rosario G. Garroppo
  • Stefano Giordano
  • Stefano Lucetti
  • Luca Tavanti
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3427)

Abstract

This paper presents a simulation analysis for the evaluation of the admission region of a IEEE 802.11e network adopting the EDCA (Enhanced Distributed Channel Access) mechanism. In particular, this study gives an estimate of the number of QoS-aware applications, namely videoconference and Voice over IP (VoIP), that can be admitted to the transport service offered by the EDCA while satisfying their QoS requirements. The traffic sources adopted for the simulation are obtained from measurement campaigns led on the emulation of VoIP and videoconference services based respectively on the G.723.1 and the H.263 codecs. The results emphasize the bottleneck role played by the Access Point when services producing symmetrical traffic are conveyed over an 802.11e access network. Furthermore, the QoS parameters experienced in a mix of VoIP, videoconference and TCP traffic under EDCA are compared with those obtained when the DCF mechanism is adopted. This comparison clearly highlights the efficiency in traffic differentiation of the EDCA algorithm.

Keywords

Medium Access Control Medium Access Control Layer Access Category Admission Region Videoconference Session 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Anastasi, G., Borgia, E., Conti, M., Gregori, E.: IEEE 802.11 ad hoc networks: performance measurements. In: Proc. of the 23rd International Conference on Distributed Computing Systems Workshops, pp. 758–763 (2003)Google Scholar
  2. 2.
    ANSI/IEEE Std 802.1D, Information technology - telecommunications and information exchange between systems - local and metropolitan area networks - common specifications. Part 3: Media Access Control (MAC) bridges (1998 Edition) Google Scholar
  3. 3.
    Arranz, M.G., Aguero, R., Munoz, L., Mahonen, P.: Behavior of UDP-based applications over IEEE 802.11 wireless networks. In: Proc. of the 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, September 30-October 3, vol. 2, pp. F72–F77 (2001)Google Scholar
  4. 4.
    Choi, S., del Prado, J., Shankar, S., Mangold, S.: IEEE 802.11e Contention-Based Channel Access (EDCF) Performance Evaluation. In: Proc. of IEEE International Conference on Communications, May 11-15, vol. 2, pp. 1151–1156 (2003)Google Scholar
  5. 5.
    Ethereal network protocol analyzer, http://www.ethereal.com
  6. 6.
    Garg, S., Kappes, M.: Can I add a VoIP call? In: Proc. of the IEEE International Conference on Communications, May 11-15, vol. 2, pp. 779–783 (2003)Google Scholar
  7. 7.
    Garroppo, R.G., Giordano, S., Lucetti, S.: IEEE 802.11b performance evaluation: convergence of theoretical, simulation and experimental results. In: Proc. of Networks 2004, vol. 1, pp. 405–410 (2004)Google Scholar
  8. 8.
    Gu, D., Zhang, J.: A new measurement-based admission control method for IEEE 802.11 wireless local area networks. In: Proc. of the 14th IEEE Personal, Indoor and Mobile Radio Communications, September 7-10, vol. 3, pp. 2009–2013 (2003)Google Scholar
  9. 9.
    He, D., Shen, C.Q.: Simulation study of IEEE 802.11e EDCF. In: Proc. of the 57th IEEE Semiannual Vehicular Technology Conference, April 22-25, vol. 1, pp. 685–689 (2003)Google Scholar
  10. 10.
    Hole, D.P., Tobagi, F.A.: Capacity of an IEEE 802.11b Wireless LAN supporting VoIP. In: Proc. of the IEEE International Conference on Communications, June 20-24, vol. 1, pp. 196–201 (2004)Google Scholar
  11. 11.
    IEEE Std 802.11-1999, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications (1999 Ed.) Google Scholar
  12. 12.
    IEEE Std 802.11b-1999, Part11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Higher-Speed Physical Layer Extension in the 2.4 GHz Band (September 1999)Google Scholar
  13. 13.
    IEEE Std 802.11e/D5.0, Draft Supplement to Part 11: Wireless Medium Access Control (MAC) and Physical Layer (PHY) specifications: Medium Access Control (MAC) Enhancements for Quality of Service (QoS) (July 2003)Google Scholar
  14. 14.
    ITU-T Rec. Y.1540, IP Packet Transfer and Availability Performance Parameters (December 2002)Google Scholar
  15. 15.
    ITU-T Rec. Y.1541, Network Performance Objectives for IP-Based services (May 2002)Google Scholar
  16. 16.
    The Network Simulator - ns-2, http://www.isi.edu/nsnam/ns
  17. 17.
    Wiethölter, S., Hoene, C.: An IEEE 802.11e EDCF and CFB Simulation Model for ns-2, http://www.tkn.tu-berlin.de/research/802.11e_ns2

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Rosario G. Garroppo
    • 1
  • Stefano Giordano
    • 1
  • Stefano Lucetti
    • 1
  • Luca Tavanti
    • 1
  1. 1.Dept. of Information EngineeringUniversity of PisaPisaItaly

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