access icon free Performance analysis of contention-based access periods and service periods of 802.11ad hybrid medium access control

© The Institution of Engineering and Technology
Received 29/04/2013, Accepted 01/09/2013, Revised 15/08/2013, Published 22/10/2013

In this study, the authors present an analytical model for the contention-based access periods (CBAPs) and service periods (SPs) as specified in the medium access control (MAC) layer of IEEE 802.11ad standards. The analytical model for CBAP is based on a two-dimensional Markov chain which captures the hybrid nature of IEEE 802.11ad MAC. The Markov chain is used to obtain important metrics like MAC throughput and average frame service time. The SPs are modelled as a M/G/1 queueing system with vacations. Using this model, the delay experienced by packets is calculated. The accuracy of the analytical models is established by extensive simulation results. A brief insight into optimal allocation of SP and CBAP is also discussed.

Inspec keywords: wireless LAN; Markov processes; access protocols

Other keywords: IEEE 802.11ad MAC; average frame service time; IEEE 802.11ad standards; two-dimensional Markov chain; SP; service periods; CBAP; contention-based access periods; MAC throughput; hybrid medium access control; medium access control layer

Subjects: Protocols; Local area networks; Markov processes; Protocols; Radio links and equipment; Markov processes; Computer communications

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