Scalable Flow Control for Multicast ABR Services

We propose a flow-control scheme for multicast ABR services in ATM networks. At the heart of the proposed scheme is an optimal secondorder rate control algorithm, called the -control, designed to deal with the variation in RM-cell round-trip time (RTT) resulting from dynamic "drift" of the bottleneck in a multicast tree. Applying two-dimensional rate control, the proposed scheme makes the rate process converge to the available bandwidth of the connection's most congested link. It also confines the buffer occupancy to a target regime bounded by a finite buffer capacity. It works well irrespective of the topology of the multicast tree. Using the fluid approximation, we model the proposed scheme and analyze the system dynamics for multicast ABR traffic. We study the convergence properties and derive the optimal-control conditions for the -control. The analytical results show that the scheme is stable and efficient in the sense that both the source rate and bottleneck queue ...

• Type: Conference
• Year: 1999
• Where: INFOCOM
• Authors: Xi Zhang, Kang G. Shin, Debanjan Saha, Dilip D. Kandlur
• Keywords: Communications, INFOCOM 1999, Multicast Abr, Multicast Tree, Rate Control