Determination of stand-by requirements in telecommunications networks

Abstract

To be able to give the required service to telephone customers in case of failures, one of the proposed protection measures is the use of stand-by circuits. Failures are defined as the breakdowns of transmission media. The stand-by protection problem can be solved in two steps. In the thesis, the first step, which is the determination of stand-by requirements is studied. Methodologies utilized in the calculation of blocking probabilities for obtaining the traffics carried by each route and a simplified heuristic approach called the "equivalent trunk group approach" which is utilized to determine the stand-by requirements are presented. Different mathematical formulations of the problem are given and some special cases are discussed. A solution·procedure is developed and applied to a small test network.