On the Impact of IEEE 802.16 Bandwidth Request-Grant Mechanisms on TCP

In IEEE 802.16 networks, bandwidth allocation is centralized at the base station (BS). For the uplink traffic, data transmission is scheduled after the BS processes bandwidth requests (BW-REQs) sent by mobile stations (MSs). In this paper we focus on the multicast/broadcast polling method, where MSs send their BW-REQs during contention periods. Contention-based polling is deemed suitable for Best-Effort TCP flows, since the latter have less stringent needs, in terms of delay and throughput, than traffic carried by other classes of service. We propose a novel analytical model for Best-Effort TCP performance over 802.16 networks. This model explicitly considers the impact of the uplink request/grant mechanism, including the influence of bandwidth-perception mismatch at the BS. The effect of MAC-layer parameters, such as the MAC queue length, is also studied. The accuracy of the model is verified by means of ns-2 simulations.

[1]  Marco Conti,et al.  Metropolitan Area Networks , 1997 .

[2]  Georges Nogueira,et al.  An Efficient Analytical Model for the Dimensioning of WiMAX Networks , 2009, Networking.

[3]  Min-Su Kim,et al.  Performance analysis of the IEEE 802.16 wireless metropolitan area network , 2005, First International Conference on Distributed Frameworks for Multimedia Applications.

[4]  Ying Zhang,et al.  WLC22-4: Efficient Request Mechanism Usage in IEEE 802.16 , 2006, IEEE Globecom 2006.

[5]  V.A. Kobliakov,et al.  Distributed Queue Random Multiple Access Algorithm for Centralized Data Networks , 2006, 2006 IEEE International Symposium on Consumer Electronics.

[6]  Donald F. Towsley,et al.  Modeling TCP Reno performance: a simple model and its empirical validation , 2000, TNET.

[7]  Nicolas Montavont,et al.  Improving uplink bandwidth management in 802.16 networks , 2009, 2009 IEEE 34th Conference on Local Computer Networks.

[8]  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.

[9]  Carl Eklund.  WirelessMAN: Inside the IEEE 802.16 Standard for Wireless Metropolitan Area Networks , 2006 .

[10]  Nicolas Montavont,et al.  A Study of Bandwidth-Perception Management Mechanisms in IEEE 802.16 Networks , 2010, ArXiv.

[11]  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.

[12]  Francisco M. Delicado Martínez,et al.  Study of the IEEE 802.16 contention-based request mechanism , 2007, PWC.

[13]  Hussein M. Alnuweiri,et al.  Performance Evaluation of Contention-Based Access in IEEE 802.16 Networks with Subchannelization , 2009, 2009 IEEE International Conference on Communications.

[14]  Francisco M. Delicado Martínez,et al.  New Contention Resolution Schemes for WiMAX , 2009, 2009 IEEE Wireless Communications and Networking Conference.