Evaluation of Simulation Models

Evaluation of Simulation Models

Sattar J. Aboud (Iraqi Council of Representatives, Iraq)
DOI: 10.4018/978-1-4666-0191-8.ch021


Simulation is employed widely to evaluate complicated systems involving telecommunication networks. This chapter reviews and evaluates different types of discrete event simulation models that are widely used for modeling network models in a practical time-frame. Different methods are presented, but special attention is given to systems that use spatial decomposition. This involves data that may have to be transmitted by mediator tiles to its purpose depending on the decomposition post. For congruent simulation the challenge is to decompose the tool in order to make effective use of the original processor design. This chapter reviews a number of methodologies and architectural design that have been developed for efficient simulation model decomposition.
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Simulation is the implementation of a model, denoted by a program code that provides information regarding the scheme being inspected. Simulation models are employed to carry out tests that are costly, risky or time consuming to be performed using analytical or experimental approaches. There are a number of methodologies that can be used to classify the existing simulation models. In particular, simulation models can be classified according to one of the following criteria, which are widely-used in classifying the different types of simulation models: time-variation of the state of the system variables, simulation termination procedure, and input-traffic pattern. Based on the time-variation of the state of the system variables, simulation models can be classified into continuous-valued or discrete-event (Al-Bahadili, 2010; Sinclair, 2004; Law & Kelton, 2000; Roth, 1987). Discrete simulation is the modeling of a scheme; it changes over time by which state variables alters in time at a countable number of points. At these stages an event is happen and is taken to be an immediate event this could alter the situation of a scheme. The standard simulation of packet-switched networks typically includes the use of discrete event simulators which is model every separate packet during the network, usually entitled packet-level simulation. Every packet departure from or arrival at a network position is denoted by an event. Too big number of packets should be simulated to get trust in the results. This needs long simulation period, usually totaling many hours to simulate a few packets.

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