Resources allocation in an Intserv/Diffserv integrated EPON system  

作　　者：LIU Qiong LI Hui JI Yue-feng QIAO Yao-jun 

机构地区：[1]Key Laboratory of Optical Communications and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2009年第3期108-113,121,共7页中国邮电高校学报（英文版）

基　　金：supported by the National Basic Research Program of China(2007CB310705);the National Natural Science Foundation of China(60772024);the Hi-Tech Research and Development Program of China(2007AA01Z255);PCSIRT(IRT0609);ISTCP(2006DFA 11040)

摘　　要：As one of the most promising next-generation access network （EPON） should pay more attention to its quality of service （QoS）, techniques, the user-oriented Ethernet passive optical network However, now the EPON adopts mostly differentiated services model （Diffserv） that only provides quality control on traffic aggregation, whereas, the quality of user session cannot be guaranteed when the network is overloaded with substantial connections. This article proposes to apply integrated services model （Intserv） in Diffserv-based EPON, which uses per-flow processing to guarantee QoS. In the simulation, a framework of combined Diffserv and Intserv model is employed in an EPON system, with a dynamic bandwidth allocation algorithm that adapts to it. The simulation results demonstrate that the EPON system with the combined models can provide more flexible, various control for user-oriented service quality.As one of the most promising next-generation access network （EPON） should pay more attention to its quality of service （QoS）, techniques, the user-oriented Ethernet passive optical network However, now the EPON adopts mostly differentiated services model （Diffserv） that only provides quality control on traffic aggregation, whereas, the quality of user session cannot be guaranteed when the network is overloaded with substantial connections. This article proposes to apply integrated services model （Intserv） in Diffserv-based EPON, which uses per-flow processing to guarantee QoS. In the simulation, a framework of combined Diffserv and Intserv model is employed in an EPON system, with a dynamic bandwidth allocation algorithm that adapts to it. The simulation results demonstrate that the EPON system with the combined models can provide more flexible, various control for user-oriented service quality.

关 键 词：QOS INTSERV DIFFSERV resource reservation 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论] TP393[自动化与计算机技术—计算机科学与技术]