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Hierarchical-based Dynamic Bandwidth Allocation Algorithm for Multi-class Services in Ethernet PON  

한경은 (전북대학교 컴퓨터공학과, 영상정보신기술연구소)
안계현 (한국전자통신연구원)
김영천 (전북대학교 컴퓨터공학과, 영상정보신기술연구소)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.3A, 2004 , pp. 223-232 More about this Journal
Abstract
In this paper we propose the hierarchical-based dynamic bandwidth allocation algorithm for multi-class services in Ethernet-PON. The proposed algorithm consists of the high level scheduler in OLT and the low level scheduler in ONU. The hierarchical architecture is able to provide scalability and resource efficiency in Ethernet-PON which has the distributed nature of the scheduling domain, with queues and the scheduler located at a large distance from each other. We also propose three dynamic bandwidth allocation algorithms for the low level scheduler: Proportional Allocation algorithm, Maximum Request First Allocation (MRFA) algorithm and High Priority First Allocation (HPFA) algorithm. We implement the Ethernet-PON standardized in the IEEE 802,3ah using OPNET. We also evaluate and analyze the performance for the proposed algorithms in terms of channel utilization, queuing delay and the amount of remainder.
Keywords
Ethernet PON; Multi-class service; Dynamic bandwidth allocation; Passive optical network;
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