Performance Optimization with Efficient Polling Mechanism in IEEE 802.16 Networks

Fei Yin Guy Pujolle 1 Jong Hyuk Park Han-Chieh Chao
1 Phare
LIP6 - Laboratoire d'Informatique de Paris 6
Abstract : IEEE 802.16 standard suite defines a reservation-based bandwidth allocation mechanism. A SS (Subscriber Station) has to be polled to request bandwidth reservation before transmits uplink data to a BS (Base Station). In this mechanism exist two main polling modes: the unicast polling mode and the contention-based polling mode. The different polling operations in MAC (Medium Access Control) result in different PHY (PHYsical layer) frame structure that deeply affect the performance. Therefore, there should be an optimal scheme to adopt these two polling modes in order to optimize the performance. Although the standard defines five service classes to adaptively use the polling modes to fit the QoS (Quality of Service) requirements of different applications, it does not specify exactly a scheme to adopt these two polling modes efficiently and fairly during the polling process. In~this paper, we investigate the polling mechanisms in IEEE 802.16 networks, and focus the attention on the performance caused by different adoption schemes. We also propose a simple but efficient polling mechanism to optimize the performance. The simulation results verify that the performance is conditioned to the fulfillment of the polling mechanisms and our proposed optimal polling scheme can allocate bandwidth more efficient and achieve better performance.
Type de document :
Article dans une revue
Wireless Personal Communications, Springer Verlag, 2009, 51 (3), pp.635-665. 〈10.1007/s11277-009-9747-7〉
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https://hal.archives-ouvertes.fr/hal-01168634
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Soumis le : vendredi 26 juin 2015 - 11:53:32
Dernière modification le : jeudi 21 mars 2019 - 13:08:36

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Fei Yin, Guy Pujolle, Jong Hyuk Park, Han-Chieh Chao. Performance Optimization with Efficient Polling Mechanism in IEEE 802.16 Networks. Wireless Personal Communications, Springer Verlag, 2009, 51 (3), pp.635-665. 〈10.1007/s11277-009-9747-7〉. 〈hal-01168634〉

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