Data rate estimation algorithm for IEEE 802.11e HCCA scheduler

Jing Rong Hsieh*, Tsern-Huei Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Purpose: As the real-time applications used in today's wireless network grow, some schemes are required to provide better quality of services. From the evaluation of referenced scheduling scheme provided in IEEE 802.11e standard document, we know that it does not perform well on traffic which is not strictly constant-bit-rate (CBR). Therefore, it is necessary to design a more flexible scheme to dynamically adjust the estimation of transmission opportunity allocated to QoS-enhanced stations with different characteristics of applications. This paper aims to present a data rate estimation algorithm for the scheduler of the IEEE 802.11e hybrid coordination function controlled channel access. Design/methodology/approach: The performance of the algorithm is evaluated through Network Simulator -2. Findings: With the proposed algorithm, the QoS access point can provide guaranteed parameters such as delay and throughput for both the real-time variable-bit-rate and CBR traffics. Originality/valve: The paper presents a data rate estimation algorithm for IEEE 802-11e HCCA scheduler.

Original languageEnglish
Pages (from-to)243-256
Number of pages14
JournalInternational Journal of Pervasive Computing and Communications
Issue number3
StatePublished - 1 Feb 2008


  • Algorithmic languages
  • Transmission control protocol/internet protocol
  • Wireless

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