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Study on the Dynamic Bandwidth Allocation Algorithm of EPON Upstream Channel

Author: ZuoJiang
Tutor: ShenBaoSuo
School: Tianjin University
Course: Communication and Information System
Keywords: Ethernet Passive Optical Network Dynamic bandwidth allocation Multi - Point Control Protocol Multi-service Quality of service
CLC: TN929.1
Type: Master's thesis
Year: 2008
Downloads: 94
Quote: 5
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Abstract


Optical access network in recent years, is becoming a mainstream technology in the field of access network . Ethernet passive optical network (Ethernet passive optical network, EPON) to achieve a combination of low-cost Ethernet equipment and low - cost fiber optic facilities , to become the next generation of the most promising access network solutions . This thesis, the key technologies of the the EPON system of some in-depth research , including system architecture , multi-point control protocol (MPCP), bandwidth allocation algorithm design , this paper include : First, the the EPON system works , system structure and its technical characteristics , and focus analysis IEEE802.3ah standard multi-point control protocol ( multi -Point control Protocol MPCP) research report / authorization mechanism and the flow chart of the process of reporting and authorization , as provide a basis for theoretical study and simulation of dynamic bandwidth allocation algorithm . The two classic dynamic bandwidth allocation algorithm , and summarize proposed on the basis of previous work , a the fixed periodic polling support multi-service QoS guarantee improved dynamic bandwidth allocation algorithm . The algorithm, in order to meet the QoS requirements of different services , the ONU business is divided into three types , giving them different priority . Proposed the idea of using different polling cycle different priorities , and the high priority voice service with centralized transmission of a fixed time slot , the inherent week period in order to reduce the fixed cycle polling algorithm idle loss report frame pre- solution method . Finally, the simulation experiments , analysis of the performance of the algorithm . Simulation results show that the new algorithm is a significant improvement in bandwidth utilization and average packet delay .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications
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