Publication Phare-Lip6

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Performance Comparison of Polling Mechanisms in IEEE 802.16 Networks
IEEE Next Generation Mobile Applications, Services and Technologies
Pujolle Guy
Cardiff, Wales, UK, September, 2008
Anglais - 6 p - Abstract
IEEE 802.16 standard suite defines two main polling mode: unicast polling and contention-base polling including multicast and broadcast polling. Unicast polling completely overcomes the request collision and is suitable for real-time application. Contention-based polling suffers from collisions and be suitable for non-real-time applications. While the standard defined uplink scheduling services for implementing effectively the polling mechanisms, it does not define how exactly adaptation algorithm should be developed. In this paper we evaluate the performance of different polling mechanisms defined in IEEE 802.16 by simulation. We also propose a new optimal unicast and contention-based mixed polling mechanism and showed that this optimal mixed polling mechanism could always achieve better performance than any polling mechanisms defined in IEEE 802.16.