| Dynamic resource management using bandwidth brokers |
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| 作者姓名： | Yu Chengzhi~ Song Hantao~ Hou Xianjun~ & Pan Chengsheng~ . Dept. of Computer Science and Engineering School of Information Science and Technology Beijing Inst. of Technology Beijing P. R. China . Shenyang Inst. of Technology Shenyang P. R. China |
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| 作者单位： | Yu Chengzhi~1，Song Hantao~1，Hou Xianjun~2 & Pan Chengsheng~2 1. Dept. of Computer Science and Engineering，School of Information Science and Technology，Beijing Inst. of Technology，Beijing 100081，P. R. China; 2. Shenyang Inst. of Technology，Shenyang 110168，P. R. China |
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| 摘 要： | 1 .INTRODUCTIONIn IP-based networks , call admission control(CAC) scheme was first introduced as a commonelement to provide QoSinintegrated services (Int-Serv)1]architectures defined byIETF.IntServ hasscalability problems since all routers need to keeptrack of the flows’reservations and need to main-tain state information of all flows . To solve thesescalability problems differentiated services ( Diff-Serv)2]architecture was proposed to provide QoSsupport on aggregate traffic le…
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| 收稿时间： | 18 February 2005 |
Dynamic resource management using bandwidth brokers |
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| Yu Chengzhi,Song Hantao,Hou Xianjun & Pan Chengsheng . Dept. of Computer Science and Engineering,School of Information Science and Technology,Beijing Inst. of Technology,Beijing ,P. R. China, . Shenyang Inst. of Technology,Shenyang ,P. R. China.Dynamic resource management using bandwidth brokers[J].Journal of Systems Engineering and Electronics,2006,17(3):660-668. |
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| Authors: | Yu Chengzhi Song Hantao Hou Xianjun Pan Chengsheng |
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| Institution: | 1. Dept. of Computer Science and Engineering, School of Information Science and Technology,Beijing Inst. of Technology, Beijing 100081, P. R. China
2. Shenyang Inst. of Technology, Shenyang 110168, P. R. China |
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| Abstract: | The admission control issue in the design of a centralized bandwidth broker model for dynamic control and management of QoS provisioning is studied. A two-phase differentiated flow treatment based dynamic admission control scheme under the centralized bandwidth broker model is proposed. In the proposed scheme, the flow requests are classified into two classes and get differentiated treatment according to their QoS demands. We demonstrate that this admission control scheme can not only improve the resource utilization but also guarantee the flows' QoS. Furthermore, the admission control is divided into two phases: edge admission control and interior admission control. During the interior phase, the PoQ scheme is adopted, which enhances the call processing capability of the bandwidth broker. The simulation results show that the proposed scheme can result in lower flow blocking probability and higher resource utilization. And it also reduces the number of QoS state accesses/updates, thereby increasing the overall call processing capability of the bandwidth broker. |
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| Keywords: | admission control quality of services bandwidth broker |
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