An Enhanced Scalable Probe-Based Multicast Admission Control Scheme

Zongkai YANG  Chunhui LE  Jianhua HE  Chun Tung CHOU  Wei LIU  

IEICE TRANSACTIONS on Communications   Vol.E88-B    No.8    pp.3466-3470
Publication Date: 2005/08/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.8.3466
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Internet
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.