Retry limit based ULP for scalable video transmission over IEEE 802.11e WLANs

Yu Zhang, Zefeng Ni, Chuan Heng Foh, Jianfei Cai

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)


We investigate the packet loss behavior in the IEEE 802.11e wireless local area networks (WLANs) under various retry limit settings. Considering scalable video traffic delivery over the IEEE 802.11e WLANs, our study shows the importance of adaptiveness in retry limit settings for the Unequal Loss Protection (ULP) design. Based on the study, we present a simple yet effective retry limit based ULP which adaptively adjusts the retry limit setting of the IEEE 802.11e medium access control protocol to maintain a strong loss protection for critical video traffic transmission. The simulation results illustrate significant advantages in the delivered video quality for our proposed design.

Original languageEnglish
Pages (from-to)498-500
Number of pages3
JournalIEEE Communications Letters
Issue number6
Publication statusPublished - Jun 2007
Externally publishedYes


  • Computer network performance
  • Multimedia communication
  • Wireless LAN

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