Performance Analysis of Contention Based Bandwidth Request Mechanisms in WiMAX Networks

WiMAX networks have received wide attention as they support high data rate access and amazing ubiquitous connectivity with great quality-of-service (QoS) capabilities. In order to support QoS, bandwidth request (BW-REQ) mechanisms are suggested in the WiMAX standard for resource reservation, in which subscriber stations send BW-REQs to a base station which can grant or reject the requests according to the available radio resources. In this paper we propose a new analytical model for the performance analysis of various contention based bandwidth request mechanisms, including grouping and no-grouping schemes, as suggested in the WiMAX standard. Our analytical model covers both unsaturated and saturated traffic load conditions in both error-free and error-prone wireless channels. The accuracy of this model is verified by various simulation results. Our results show that the grouping mechanism outperforms the no-grouping mechanism when the system load is high, but it is not preferable when the system load is light. The channel noise degrades the performance of both throughput and delay.

[1]  Jianhua He,et al.  Modeling Contention Based Bandwidth Request Scheme for IEEE 802.16 Networks , 2007, IEEE Communications Letters.

[2]  Michel Dubois,et al.  Performance Evaluation of the , 1995 .

[3]  Thierry Turletti,et al.  Performance analysis under finite load and improvements for multirate 802.11 , 2005, Comput. Commun..

[4]  Lachlan L. H. Andrew,et al.  Performance Analysis of Best-Effort Service in Saturated IEEE 802.16 Networks , 2010, IEEE Transactions on Vehicular Technology.

[5]  Jinyun Zhang,et al.  The Mobile Broadband WiMAX Standard [Standards in a Nutshell] , 2007, IEEE Signal Processing Magazine.

[6]  Ying Zhang,et al.  Performance Analysis of the Random Access in IEEE 802.16 , 2005, 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications.

[7]  Z. Tao.  The Mobile Broadband WiMAX Standard , .

[8]  Yang Xiao,et al.  Performance analysis of priority schemes for IEEE 802.11 and IEEE 802.11e wireless LANs , 2005, IEEE Transactions on Wireless Communications.

[9]  Bo Li,et al.  A Survey on Mobile WiMAX [Wireless Broadband Access] , 2007, IEEE Communications Magazine.

[10]  Qiang Ni,et al.  An unsaturated model for request mechanisms in WiMAX , 2010, IEEE Communications Letters.

[11]  A. Girotra,et al.  Performance Analysis of the IEEE 802 . 11 Distributed Coordination Function , 2005 .

[12]  D. Malone,et al.  Modeling the 802.11 Distributed Coordination Function in Nonsaturated Heterogeneous Conditions , 2007, IEEE/ACM Transactions on Networking.

[13]  Jeffrey G. Andrews,et al.  Broadband wireless access with WiMax/802.16: current performance benchmarks and future potential , 2005, IEEE Communications Magazine.

[14]  Luciano Lenzini,et al.  Performance Evaluation of the IEEE 802.16 MAC for QoS Support , 2007, IEEE Transactions on Mobile Computing.

[15]  Andrey M. Turlikov,et al.  WIRELESS BROADBAND ACCESS: WIMAX AND BEYOND - Investigation of Bandwidth Request Mechanisms under Point-to-Multipoint Mode of WiMAX Networks , 2007, IEEE Communications Magazine.

[16]  Victor C. M. Leung,et al.  Analytical Modeling of Contention-Based Bandwidth Request Mechanism in IEEE 802.16 Wireless Networks , 2008, IEEE Transactions on Vehicular Technology.

[17]  G. J. A. Stern,et al.  Queueing Systems, Volume 2: Computer Applications , 1976 .