A new congestion control scheme for hybrid ATM/TDMA networks

A new congestion control scheme is analyzed for an ATM multiplexer node. This scheme is based on the leaky bucket and virtual leaky bucket techniques, and utilizes the interaction between the ATM and higher layers, in a hybrid ATM/TDMA network. The transport users are assumed to be generic ATM sources, who modulate their end-to-end flow control parameters, i.e. protocol data unit size in the case of video and voice users, and window size in the case of data users, based on the congestion status. An ATM multiplexer node buffer is analyzed using a modulated Poisson process queuing model with bulk arrival and bulk service of cells. The congestion performance criteria, i.e. the mean probabilities of ATM multiplexer node congestion, cell generation, cell discarding, buffer content and buffer overflow, are evaluated with and without the congestion control schemes.