A QoS-guaranteed MAC protocol using variable frame granularity for wireless access networks

Maria C. Yuang*, B. C. Lo

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

In this paper, we propose a MAC protocol, called QMAC+, which adopts variable frame granularity, aiming to provide bandwidth-on-demand and QoS guarantees while retaining maximal network throughput. QMAC+ supports three traffic types- CBR, VBR, and Reservation Request (RVR) for making CBR/VBR connection reservation. Essentially, QMAC+ governs weight-based reservation access (for VBR/CBR) and premier contention access (for RVR) over dynamically allocated reservation and premier contention bandwidths, respectively. In particular, the premier contention access performs incremental contention resolution by means of feedback control using an envelope-pdf-based estimator for the estimation of the number of concurrently transmitting users. As a result, the frame granularity is dynamically changed adapting to traffic fluctuation. Simulation results demonstrate that QMAC+ achieves superior performance with respect to throughput, delay, and blocking probability.

Original languageEnglish
Pages (from-to)2158-2162
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume4
Issue number54ND
DOIs
StatePublished - 1 Jan 2001
EventIEEE 54th Vehicular Technology Conference (VTC FALL 2001) - Atlantic City, NJ, United States
Duration: 7 Oct 200111 Oct 2001

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