Wireless Networks

, Volume 15, Issue 4, pp 443–454 | Cite as

Supporting voice and video applications over IEEE 802.11n WLANs

  • Lin X. Cai
  • Xinhua Ling
  • Xuemin (Sherman)  Shen
  • Jon W. Mark
  • Lin Cai
Article

Abstract

In this paper, an analytical model is developed for the performance study of an IEEE 802.11n wireless local area network (WLAN) supporting voice and video services, considering the new features of the medium access control (MAC) protocol proposed in IEEE 802.11n, i.e., frame aggregation and bidirectional transmission. We show that these enhanced MAC mechanisms can effectively improve the network capacity by not only reducing the protocol overheads, but also smoothing the AP-bottleneck effect in an infrastructure-based WLAN. Voice and video capacity under various MAC mechanisms are compared as well.

Keywords

IEEE 802.11n Frame aggregation Bidirectional transmission Voice capacity Video capacity 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Garg, S., & Kappes, M. (2003). Can I add a VoIP call? In Proc. IEEE ICC’03 (Vol. 2, pp. 779–783).Google Scholar
  2. 2.
    Hole, D. P., & Tobagi, F. A. (2004). Capacity of an IEEE 802.11b wireless LAN supporting VoIP. In Proc. IEEE ICC’04 (Vol. 1, pp. 196–201).Google Scholar
  3. 3.
    Cai, L. X., Shen, X., Mark, J. W., Cai, L., & Xiao, Y. (2006). Voice capacity analysis of wlan with unbalanced traffic. IEEE Transactions on Vehicular Technology, 55(3), 752–761.CrossRefGoogle Scholar
  4. 4.
    Wilson, J. M. (2004). The next generation of wireless LAN emerges with 802.11n. In Technology Intel Magazine.Google Scholar
  5. 5.
    Bianchi, G. (2000). Performance analysis of the IEEE 802. 11. distributed coordination function. IEEE Journal on Selected Areas in Communications, 18(3), 535–547.CrossRefGoogle Scholar
  6. 6.
    Tickoo, O., & Sikdar, B. (2004). A queueing model for finite load IEEE 802.11. random access MAC. In Proc. IEEE ICC’04 (Vol. 1, pp. 175–179), Jun. 2004.Google Scholar
  7. 7.
    Xiao, Y. (2005). IEEE 802.11 performance enhancement via concatenation and piggyback mechanisms. IEEE Transactions on Wireless Communications, 4(5), 2182– 2192.CrossRefGoogle Scholar
  8. 8.
    Liu, C., & Stephens, A. P. (2005). An analytic model for infrastructure wlan capacity with bidirectional frame aggregation. In Proc. IEEE WCNC’05 (pp. 113–119).Google Scholar
  9. 9.
    Xiao, Y. (2005). IEEE 802.11n: Enhancements for higher throughput in wireless LANs. IEEE Wireless Communication, 12, (6), 82–91.Google Scholar
  10. 10.
    Black, U. (2001). Ovice over IP (2rd ed.). Prentice Hall.Google Scholar
  11. 11.
    Apostolopoulos, J. G., Tan, W., & Wee, S. J. (2002). Video streaming: concepts, algorithm, and systems. Technical report, HP. Tech. HPL-20020260.Google Scholar
  12. 12.
    Heck, A. (2003). Introduction to maple (3rd ed.). New York: Springer-Verlag.Google Scholar
  13. 13.
    International Telecommunication Union. G.729 annex b: A silence compression scheme for g.729 optimized for terminals conforming to recommendation v.70. In Telecommunication Standardization section of ITU, Nov. 1996.Google Scholar
  14. 14.
    Kim, J., Tode, H., & Murakami, K. (2006). MAC-layer support for real-time video over IEEE 802.11 DCF networks. IEICE Transactions on Communication, E89-B(4), 1382–1391.CrossRefGoogle Scholar
  15. 15.
    Wenger, S., Hannuksela, M., Stockhammer, T., Westerlund, M., & Singer, D. (2005). RTP payload format for H.264 video.Google Scholar
  16. 16.
    Sullivan, G. J., Topiwala, P., & Luthra, A. (2004). The H.264/AVC advanced video coding standard: Overview and introduction to the fidelity range extensions. In Proc. SPIE on Applications of Digital Image Processing XXVII.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Lin X. Cai
    • 1
  • Xinhua Ling
    • 1
  • Xuemin (Sherman)  Shen
    • 1
  • Jon W. Mark
    • 1
  • Lin Cai
    • 2
  1. 1.Centre for Wireless Communications, Department of Electrical and Computer EngineeringUniversity of WaterlooWaterlooCanada
  2. 2.Department of Electrical & Computer EngineeringUniversity of VictoriaVictoriaCanada

Personalised recommendations