An improved fairness algorithm for resilient packet ring network

Wenli Tang; Liren Zhang; P. Shum; Songnian Fu

doi:10.1117/12.687746

28 September 2006 An improved fairness algorithm for resilient packet ring network

Wenli Tang, Liren Zhang, P. Shum, Songnian Fu

Proceedings Volume 6354, Network Architectures, Management, and Applications IV; 635410 (2006) https://doi.org/10.1117/12.687746
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

Among all kinds of metro-ring networks, resilient packet ring (RPR) technology possesses excellent market prospect which is integrated with many advantages, such as the intelligence of Internet Protocol (IP), economy of Ethernet and high bandwidth and reliability of SONET/SDH. A RPR network is a dual ring topology with two unidirectional counter-rotating ringlets. This ring network architecture and associated protocol has been standardized by the IEEE 802.17 working group in 2004. One of the main requirements for RPR is to provide fairness in bandwidth allocation for each node, which is ensured by the implementation of a fairness policy in a distributed manner. However, the existing fairness mechanisms suffer from severe oscillations under certain conditions, such as unbalanced traffic scenario and noticeable time delay. In this paper, an improvement to current aggressive fairness algorithm is proposed, especially for networks with noticeable time delay. And the simulation results show that the system performance can be sustained by adjusting the compensating factor accordingly with respect to the delay.

Citation Download Citation

Wenli Tang, Liren Zhang, P. Shum, and Songnian Fu "An improved fairness algorithm for resilient packet ring network", Proc. SPIE 6354, Network Architectures, Management, and Applications IV, 635410 (28 September 2006); https://doi.org/10.1117/12.687746

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