A QoS-Guaranteed Admission Control Scheme and Scheduling Algorithm with Consideration of Revenue Maximization in WiMAX Networks
| Autor: | Cheng-HungKu, 古振鴻 |
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| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 Worldwide Interoperability for Microwave Access (WiMAX) standard represents a new generation technology for high speed Broadband Wireless Access (BWA) system. Because of the lower cost on the infrastructure installation and maintenance, it becomes a good solution of last mile problem. Due to the diversity of modern network systems and their applications, WiMAX standards define five service classes to support different Quality of Service in the system. IEEE allows WiMAX vendors to design their admission control schemes and scheduling algorithms to achieve the efficiency or some special purpose of allocating network resources. Many scheduling algorithms have been proposed for WiMAX system. However most of them do not consider the revenue issues from service providers' standpoint. In this thesis, we propose an admission control scheme and a packet scheduling algorithm – Revenue-Aware Scheduling algorithm (RAS) in the WiMAX MAC layer. In admission control scheme, we use the feedback from RAS and adjust the reserved bandwidth for the incoming connections. In RAS, the connections that do not meet their Quality of Service (QoS) requirements will be served first. Then RAS will choose the connections from which can obtain the most revenue to serve. Finally, RAS will allocate the residual resource to connections based on their queue length and Modulation and Coding Scheme (MCS). To evaluate the proposed scheme, we perform some simulations with different scenarios. Our simulation results show that our proposed admission control scheme and RAS can obtain more revenue. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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