Performance Evaluation of the Probability based MAC Protocol for Fair Transmission in WDM Metro Ring 


Vol. 31,  No. 4, pp. 323-332, Apr.  2006


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  Abstract

In this paper, we consider a WDM based metro ring connecting broadband access networks by using FT-TR (Fixed Transmitter-Tunable Receiver) type access nodes and a new MAC protocol for fair transmission is proposed. The basic channel access scheme is CSMA/CA(Carrier Sense Multiple Access with Collision Avoidance) and the transferred optical slot is changed to be empty slot by SS(Source-Stripping) which drops a packet from ring-rotated slot. This empty slot can be either used to send head-of-line packet in buffer or transmitted to next access node. In former cases, there is the improvement of network throughput, but latter case leads unfairness problem of transmission. Thus the proposed MAC protocol exploits the advantages form tow cases. It gives downstream access nodes chance to use empty slots and limits the unconditional usage of empty slots at upstream access nodes with probability as called p-Persistent MAC protocol. We use a numerical analysis to evaluate bandwidth efficiency and maximum node throughput and compares simulation results in terms of node throughput, fairness factor, transfer delay depending on probability. Under two different FT-TR type architectures for metro ring network the proposed MAC protocol is evaluated and compared.

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  Cite this article

[IEEE Style]

W. So and Y. Kim, "Performance Evaluation of the Probability based MAC Protocol for Fair Transmission in WDM Metro Ring," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 4, pp. 323-332, 2006. DOI: .

[ACM Style]

Won-ho So and Young-chon Kim. 2006. Performance Evaluation of the Probability based MAC Protocol for Fair Transmission in WDM Metro Ring. The Journal of Korean Institute of Communications and Information Sciences, 31, 4, (2006), 323-332. DOI: .

[KICS Style]

Won-ho So and Young-chon Kim, "Performance Evaluation of the Probability based MAC Protocol for Fair Transmission in WDM Metro Ring," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 4, pp. 323-332, 4. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880