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An Enhanced Scalable Probe-Based Multicast Admission Control Scheme
Zongkai YANG Chunhui LE Jianhua HE Chun Tung CHOU Wei LIU
IEICE TRANSACTIONS on Communications
Publication Date: 2005/08/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
multicast, quality of service, admission control, traffic probing, differentiated services,
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To guarantee QoS for multicast transmission, admission control for multicast sessions is expected. Probe-based multicast admission control (PBMAC) scheme is a scalable and simple approach. However, PBMAC suffers from the subsequent request problem which can significantly reduce the maximum number of multicast sessions that a network can admit. In this letter, we describe the subsequent request problem and propose an enhanced PBMAC scheme to solve this problem. The enhanced scheme makes use of complementary probing and remarking which require only minor modification to the original scheme. By using a fluid-based analytical model, we are able to prove that the enhanced scheme can always admit a higher number of multicast sessions. Furthermore, we present validation of the analytical model using packet based simulation.