Download Congestion Control in Data Transmission Networks: Sliding by Przemyslaw Ignaciuk PDF

By Przemyslaw Ignaciuk

ISBN-10: 1447141466

ISBN-13: 9781447141464

ISBN-10: 1447141474

ISBN-13: 9781447141471

Congestion keep watch over in info Transmission Networks information the modeling and keep watch over of information site visitors in communique networks. It indicates how a number of networking phenomena should be represented in a constant mathematical framework appropriate for rigorous formal research. The monograph differentiates among fluid-flow continuous-time site visitors types, discrete-time approaches with consistent sampling premiums, and sampled-data structures with variable discretization classes.
The authors deal with a few tricky real-life difficulties, corresponding to:
optimal regulate of flows with disparate, time-varying hold up;
the life of resource and channel nonlinearities;
the balancing of caliber of carrier and equity standards; and
the incorporation of variable cost allocation regulations.
Appropriate keep an eye on mechanisms which could deal with congestion and warrantly excessive throughput in a variety of site visitors eventualities (with diverse networking phenomena being thought of) are proposed. Systematic layout techniques utilizing sound control-theoretic foundations are followed. on the grounds that robustness matters are of significant obstacle in delivering effective data-flow rules in today’s networks, sliding-mode keep watch over is chosen because the valuable strategy to be utilized in growing the regulate recommendations. The controller derivation is given vast analytical remedy and is supported with a variety of lifelike simulations. A comparability with latest ideas can also be supplied. The techniques utilized are mentioned in a couple of illustrative examples, and supported through many figures, tables, and graphs jogging the reader in the course of the principles and introducing their relevance in actual networks.
Academic researchers and graduate scholars operating in machine networks and telecommunications and up to the mark (especially time-delay structures and discrete-time optimum and sliding-mode keep watch over) will locate this article a precious assistance in making sure tender data-flow inside communications networks.

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Extra info for Congestion Control in Data Transmission Networks: Sliding Mode and Other Designs

Sample text

Since the slow rise time of LGC may result in poor utilization of the output port during transient periods, a second controller, called high gain PD controller (HGC), is applied. HGC brings the operating point quickly to equilibrium, where the control action is taken over by LGC. As HGC is designed for a smaller number of bottlenecked VCs (with fewer number of filter taps), it does not ensure stability of the closed-loop system. However, it is used only for a short period of time before switching to LGC.

1]. The key idea of their scheme, called phantom, is to bind the rate of sessions that share a link by the amount of unused bandwidth as though there would be an additional imaginary session – a phantom – on that link. The bandwidth is fairly distributed among all the sessions, including the phantom, and the residual unused capacity can be used to accommodate new connections without the queue buildup. The disadvantage of this scheme lies in the unused bandwidth measurement, which is difficult and prone to errors.

The majority of systematic control solutions discussed so far assume that feedback delay is constant. Obviously, this assumption facilitates formal analysis but is seldom well justified from the perspective of the actual application in data transmission networks. The important problem of latency variation in a delayed feedback system has been addressed in a number of papers [33, 101, 124, 131, 153]. The authors of [101] modeled the delay fluctuations as well as the source activity periods and instances of rate calculation and feedback information delivery with random variables.

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