Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Patent
1997-04-07
2000-03-21
Horabik, Michael
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
370468, 370253, G01R 3108, G06F 1100, H04J 316, H04J 322
Patent
active
06041040&
ABSTRACT:
Techniques of service-rate controls in ATM switches are described, and apparatus for their implementation are devised. The techniques fall in two categories: frequency domain controls, and time-domain controls. The regulators control the service rate on a per-class basis or on a per-connection basis. Some class regulators operate at very high speeds of the order of several gigabits per second and cover a medium number of classes, 32 for example. Other regulators operate at high speeds of the order of several-hundred megabits per second, and cover a very large number of classes, e.g., 10000. A compound regulator which combines both types of regulators is also described. The compound regulators extend the range of controllable classes considerably, covering some 200,000 classes. The main advantages of the regulators of the invention are simplicity, robustness, and high performance.
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Tsang, D.H.K. et al: "Credit-Based Fair Queueing For ATM Networks". Electronics Letters, vol. 32, No. 25, Dec. 5, 1996, pp. 2306/2307.
Hui Zhang et al: "Comparison of Rate-Based Service Disciplines". Computer Communication Review, vol. 21, No. 4, Sep. 1, 1991, pp. 113-121.
K. Sriram: "Methodologies For Bandwidth Allocation, Transmission Scheduling, and Congestion Avoidance in Broadband ATM Networks". vol. 26, No. 1, Sep. 1, 1993, pp. 43-59.
Guven Mercankosk, et al: Multiplexing Spacer Outputs on Cell Emissions. 1995 IEEE, Apr. 2, 1995, pp. 49-55.
Beshai Maged E.
Nichols Stacy W.
Donnelly Victoria
Harper Kevin C.
Horabik Michael
Nortel Networks Corporation
Toyooka Yoshiharu
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