Node-oriented optimal flow control protocols for ATM networks

Optimal flow control protocols for ATM networks that satisfy grade of service (GOS) requirements and fairness criteria are developed. The authors propose a novel node-oriented approach for flow control based on a modified definition of power. In this approach, bandwidth allocation and enforcement are carried out for groups of users multiplexed at nodes rather than for each individual user as in previous designs. Higher efficiency and ease of implementation are among the key features of this approach. A dynamic bandwidth sharing scheme which dynamically partitions the optimal bandwidth among all the ATM service categories is also introduced. The methodology can handle all the services in ATM networks, namely CBR, VBR, ABR and UBR services.