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http://dx.doi.org/10.7840/KICS.2011.36B.2.120

A CICQ Switch Architecture Using Blocking Avoidance & Virtual Threshold Scheme for QoS Guaranteed Multicast Service  

Kim, Kyung-Min (연세대학교 전기전자공학과 유비쿼터스 네트워크 연구실)
Jung, Hyun-Duk (연세대학교 전기전자공학과 유비쿼터스 네트워크 연구실)
Lee, Jai-Yong (연세대학교 전기전자공학과 유비쿼터스 네트워크 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.2B, 2011 , pp. 120-130 More about this Journal
Abstract
Recently the multicast based contents transmission is rapidly increasing due to the various multimedia services and the importance of switching technology to handle it is increasing as a consequence. Though the CICQ architecture has advantages that reduction of HoL blocking probability and simple scheduling using cross point buffer, it has disadvantage that the processing rate of multicast traffic can be significantly degraded corresponds to the traffic load increment. Several schemes have been proposed to solve this problem however they still can't provide enough processing ratio for multicast traffic. Therefore this paper proposes the BA cell assignment scheme and the VT scheme, and the processing rate of multicast traffic can be guaranteed by reducing the HoL blocking probability of multicast traffic and reservation of cross point buffer. Also simulation results verify that using the proposed scheme, the QoS of multicast service can be improved.
Keywords
Multicast Switch; CICO; Cell Assignment; Blocking Avoidance; Virtual Threshold;
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