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

So, Won-Ho (순천대학교 컴퓨터교육과)
Roh, Sun-Sik (광주대학교 컴퓨터전자통신공학부 정보통신)
Kim, Young-Chon (전북대학교 컴퓨터공학과 차세대통신망연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.9B, 2004 , pp. 778-790 More about this Journal
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 bounda η 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 parame ‘ ers 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.
Keywords
OBS; GMPLS; CAC.QoS; IP over WDM;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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