An enhanced scalable probe-based multicast admission control scheme

Zongkai Yang, Chunhui Le, Jianhua He, Chun Tung Chou, Wei Liu

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)3466-3470
Number of pages5
JournalIEICE Transactions on Communications
Issue number8
Publication statusPublished - 1 Aug 2005


  • multicast
  • admission control
  • traffic probing


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