Download Analytical and stochastic modeling techniques and by Khalid Al-Begain, Dieter Fiems, Gábor Horváth PDF

By Khalid Al-Begain, Dieter Fiems, Gábor Horváth

ISBN-10: 3642022049

ISBN-13: 9783642022043

This e-book constitutes the refereed court cases of the sixteenth foreign convention on Analytical and Stochastic Modeling suggestions and purposes, ASMTA 2009, held in Madrid, Spain, in June 2009 along with ECMS 2009, the 23nd ecu convention on Modeling and Simulation.

The 27 revised complete papers awarded have been conscientiously reviewed and chosen from fifty five submissions. The papers are geared up in topical sections on telecommunication networks; instant & cellular networks; simulation; quueing structures & distributions; queueing & scheduling in telecommunication networks; version checking & procedure algebra; functionality & reliability research of varied systems.

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Extra resources for Analytical and stochastic modeling techniques and applications 16th international conference, ASMTA 2009, Madrid, Spain, June 9-12, 2009: proceedings

Example text

On the other hand, a bigger value of TE would make the initial convergence duration lower while bringing about a longer convergence time for the consequence path switching events in the case of sudden congestion on the selected path. Furthermore, it is evident that TE ≥ TR is a necessary constraint. With these in mind, TE = 3 is the best selection as expected and seen in our results. 5 × TR in a more generalized scheme. 008 40 42 44 46 Time (s) 48 50 52 40 42 44 46 Time (s) 48 50 52 Fig. 7. Comparison of delay of paths at different Fig.

If there is no free primary channel to handoff, the SU will be dropped. In such case, the dropping probability, Pd1 , can be written as follows c1 −1 Pd1 = λ1 pi,c1 −i i=0 The throughput T1 can be defined as the average number of service completions for SUs per second. 3 Opportunistic Spectrum Access with Backup Channels (OSAB) This access scheme is different from the previous one in the way that an SU is accessing the available spectrum. An SU operates first in the primary channels and uses it as the operating channels.

This is typically done driven by some performance criterion such as delay and loss ratio. As a result, the proliferation of IRC systems by stub networks is not only for bypassing Internet outage but also to have their traffic experience a low latency and packet loss. There are just few recent studies on the potential performance/cost benefits of IRC systems [4]-[7]. However, since IRC systems are commercial products, only the basic implementation guidelines are discussed thus far. In this paper, we apply traditional ant colony optimization (ACO) paradigm to study these systems deeply.

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