Threshold-based congestion control scheme for ABR services in ATM networks

Authors:
Jin-Long Wang
Affiliations:
Department of Computer and Communication Engineering, Ming Chuan University, Taipei 11120, Taiwan, ROC
Venue:
Computer Communications
Year:
2002

Citing 3
Cited 0

Design considerations for the virtual source/virtual destination (VS/VD) feature in the ABR service of ATM networks

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Performance and buffering requirements of Internet protocols over ATM ABR and UBR services

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Abstract

In this paper, an effective flow control scheme, modified explicit rate indication for congestion avoidance (MERICA), is proposed to adaptively release congestion and enhance throughput for available bit rate (ABR) services in asynchronous transfer mode (ATM) networks. The proposed scheme mainly employs thresholds to determine the traffic status. Whenever the traffic status is changed, the switch will immediately inform the source of the new allowed data rate through the resource management (RM) cell in order to regulate the ABR traffic. For efficiently deriving thresholds, a Markov chain model is developed to precisely describe the behavior of the traffic pattern in ATM networks. Moreover, an algorithm is proposed to efficiently solve the thresholds from the Markov chain model under the time complexity of O(N). Finally, a simulation model is presented to investigate the performance. From the simulation results, the proposed scheme can obtain lower loss rate and higher utilization than other methods.