GMPLS based Functional Models and Connection Admission Control Algorithms for Optical Burst Switched Networks 


Vol. 29,  No. 7, pp. 585-597, Jul.  2004


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  Abstract

In this paper, we propose the functional models of optical burst switching (OBS) routers to apply GMPLS (Generalized Multiprotocol Label Switching) to optical networks based on OBS. In addition, we introduce a connection admission control (CAC) algorithms which are operated in this models and can accommodate the required QoS. Firstly, the characteristics of current GMPLS and OBS for the optical Internet are basically considered. With this consideration, the models are proposed to accept OBS features which include the recognition of data boundary with control information and the statistical multiplexing in terms of bursts. Secondly, we use an offset time decision (OTD) algorithm on behalf of controlling the connection admission with taking QoS parameters such as burst loss rate(BLR) and service-differentiation ratio(SDR) into consideration. The proposed CAC algorithms use the offered load of LSP (Label Switched Path), wavelength information, and QoS parameters as inputs of OTD algorithm. A call setup request will be accepted when the offset time decided by OTD algorithm is reasonable for guaranteeing its requested QoS. Simulation is used for performance evaluation. Results show the proposed schemes can guarantee the required QoS and those are better than the previous one in terms of channel utilization.

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  Cite this article

[IEEE Style]

W. So, S. Roh, Y. Kim, "GMPLS based Functional Models and Connection Admission Control Algorithms for Optical Burst Switched Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 7, pp. 585-597, 2004. DOI: .

[ACM Style]

Won-ho So, Sun-sik Roh, and Young-chon Kim. 2004. GMPLS based Functional Models and Connection Admission Control Algorithms for Optical Burst Switched Networks. The Journal of Korean Institute of Communications and Information Sciences, 29, 7, (2004), 585-597. DOI: .

[KICS Style]

Won-ho So, Sun-sik Roh, Young-chon Kim, "GMPLS based Functional Models and Connection Admission Control Algorithms for Optical Burst Switched Networks," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 7, pp. 585-597, 7. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880