Abstract
The design of communication networks continues to progress rapidly in more suitable forms to meet the challenges of the present era. This paper presents a tentative study of the design of a reliable Iraqi National Communication Network (INCN). The INCN connects all major cities in Iraq with Baghdad as the central node. The followed subjected procedure is a general method which can be applied to all similar problems concerning any Wide Area Network design. An optimal backbone is first designed by Prim’s algorithm which has distances between cities as input data. The INCN is subjected to reliability improvement by adding links to the initial backbone. An improved algorithm based on tie-sets method is developed for network reliability computation. Three chosen scenarios (Net1, Net2, and Net3) for the INCN are presented and underwent reliability estimation. Evaluation results show a successive improvement of the network reliability to yield to an optimal solution recognized as being Net3. The adopted topology for the INCN is based on two clusters having Baghdad as the common head cluster. Clustering will simplify the reliability evaluation by decreasing the number of tie-sets, and hence the computation complexity.
Highlights
Modern technology enables constructing societies to reach their public efficiently and with the high spreading area
An algorithm based on tie-sets method is developed for the two-terminal reliability evaluation
These results show an increasing improvement in the network reliability in ascending order from Net1, Net2, to Net3
Summary
Modern technology enables constructing societies to reach their public efficiently and with the high spreading area. Prosperity in such competitive universe requires a high quality and cost-effective exchange of data. This information exchange is only possible through optimum and reliable communication networks. Reliable communication networks play an essential role in managing and performing all the modern applications using heterogeneous networks [2]. The communication network demands better Quality of Services (QoS) to perform the required tasks. The probability of a system failure is considered as a random variable in reliability analysis. Due to the system complexity, edges failure is sometimes considered as being an independent event even when it is dependent [5]
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