Performance Analysis of IPACT Media Access Control Protocols for Gigabit Ethernet-PONs

Jaeyong LEE
Byungchul KIM
Jihye SHIN

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B    No.4    pp.845-855
Publication Date: 2007/04/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.4.845
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Fiber-Optic Transmission for Communications
Keyword: 
Ethernet passive optical networks,  media access control,  performance analysis,  

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Summary: 
In this paper, we examine the Interleaved Polling with Adaptive Cycle Time (IPACT) that was proposed to control upstream traffic for Gigabit Ethernet-PONs, a promising technology for the Fiber To The Home (FTTH). We analyzed the performance for the gated service and the limited service mathematically. To do this, the IPACT protocol was modeled as a polling system and analyzed by using mean-value analysis technique. The traffic arrival rate λ was divided into three regions, and each region was analyzed separately and merged appropriately by using an interpolation method. The average packet delay, average queue size, and average cycle time of both the gated service and the limited service were obtained through the analysis. In order to evaluate the accuracy of the mathematical analysis, discrete event simulation was performed for the IPACT protocol. Simulation results show the accuracy of the mathematical analysis. The analysis results can be widely used in the design of the FTTH system based on EPON, as the performance results in the present study can be obtained in a rather short time. We can design an appropriate system depending on various traffic conditions by adjusting system parameters, such as the number of users N, the maximum transfer window WMAX, and so on.