ABSTRACT
The Resilient Packet Ring (RPR) IEEE 802.17 standard is a new technology developed for high-speed backbone metropolitan area networks (MANs). The key performance objectives of RPR are to simultaneously achieve fairness, high utilization, and spatial reuse for fairness eligible (FE) traffics over the ring, and as such designing efficient fair bandwidth allocation algorithms to achieve such goals is an important task. This chapter presents a survey of the existing fair bandwidth allocation approaches that are applied in Resilient Packet Ring (RPR) networks. It discusses the three representative approaches, namely aggressive mode (AM), conservative mode (CM), and distributed virtual-time scheduling in rings (DVSRs). The chapter analyses the operating mechanism, algorithms, and the performance comparisons among them on the basis of theoretical analyses and simulation demonstrations. However, under DVSR, the sending rates of the two flows can rapidly converge to the desired fair shares and few oscillations occur.
