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


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.


IEEE 802.11n Frame aggregation Bidirectional transmission Voice capacity Video capacity 


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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

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