الفهرس 
Chapter 1Only 14 pages are availabe for public view
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Abstract
A rate-based congestion control scheme for available bit rate (ABR) traffic in ATM (Asynchronous Transfer Mode) networks is described. Congestion control schemes consist of a source algorithm, switch algorithm and destination algorithm. A proposed switch algorithm is described for rate allocation within the individual switches of an ATM network. The algorithm performs an allocation in 0(1) (independent of the number of virtual channels sharing the outgoing link) time. Therefore the algorithm is attractive for implementation in ATM switches supporting large number of virtual channels. When the total available capacity or the requests of the individual connections change, the algorithm converges to the max-min allocation. A source and destination algorithms are also described to support the proposed congestion control scheme. Results from simulations using ATM ABR traffic sources show that the scheme provides close to ideal throughput and converges to the max-min fair allocation rapidly when the available bandwidth or the individual requests change. Simulation results also show that the proposed scheme yields better results in most of the performance measures, considered in the results, than other congestion control schemes already proposed to the ATM Forum. The simulation results of the comparative study included results obtained when using the OSU (Ohio-State University), FECN (Forward Explicit Congestion Notification) and the efficient rate allocation schemes together with the proposed scheme.