Publications:Performance Analysis of Contention Based Bandwidth Request Mechanisms in WiMAX Networks
From CERES
| Title | Performance Analysis of Contention Based Bandwidth Request Mechanisms in WiMAX Networks |
|---|---|
| Author | Qiang Ni and Ling Hu and Alexey Vinel and Yang Xiao and Marios Hadjinicolaou |
| Year | 2010 |
| PublicationType | Journal Paper |
| Journal | IEEE Systems Journal |
| HostPublication | |
| DOI | http://dx.doi.org/10.1109/JSYST.2010.2088770 |
| Conference | |
| Diva url | http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:585214 |
| Abstract | 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. © 2010 IEEE. |
