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Study on the Efficient Fair Dynamic Bandwidth Allocation Algorithm of EPON System

Author: ZhangJiaZhu
Tutor: ChouYingHui
School: North China Electric Power University (Beijing)
Course: Communication and Information System
Keywords: EPON Dynamic bandwidth allocation Fair Efficient
CLC: TN929.1
Type: Master's thesis
Year: 2011
Downloads: 50
Quote: 0
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Abstract


With the rapid development of Internet technology , the emergence of many new businesses , these services require high bandwidth, high speed, followed by a user on the network bandwidth requirements increase rapidly. Traditional access methods because of its own shortcomings difficult to meet these needs of users , optical access network has become a new option. EPON network combines the advantages of Ethernet and PON broadband access as well as the ultimate realization of the main means of fiber to the home . In this paper, some key technologies EPON system were studied, elaborated on the basis of EPON system works, hierarchical model , MPCP protocol and system OAM protocol , focus on the uplink channel EPON system dynamic bandwidth allocation algorithm , this paper completed the following tasks: 1 ) access network technology based on the current situation , analysis and comparison of PON technology features , and on the basis of analysis of the technical merits of EPON and research status . 2 ) focusing on the key technologies of EPON system : the system synchronization burst technology, dynamic bandwidth allocation, security issues and MPCP protocol, the OAM functions were described in detail, focusing on the EPON system ranging technology and ONU automatically added technologies. 3 ) analysis of the EPON system bandwidth allocation algorithm commonly used : static and dynamic bandwidth allocation algorithm, and summarizes these algorithms shortcomings and advantages, but the bandwidth of EPON algorithm proposed principles to be followed . 4 ) through the existing bandwidth allocation algorithm , we propose a single-cycle multi- round business polling scheme , and the simulation results : This program reduces the time slot between the different business but also for the protection of high-priority operations sufficient buffer space and improves uplink bandwidth utilization.

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