A Study on Satellite Circuit Assignment and Dimensioning Methods for a Domestic Telephone Transit Network.

In applying satellite circuits to a large domestic telephone network, it is necessary to study channel assignment and dimensioning methods that take advantage of broadcast communication features. This paper shows that for a large-scale telephone transit network which has hierarchical structure, in order to absorb traffic fluctuation, it is attractive to apply satellite circuits to high-usage trunks in combination with terrestrial final trunks, by taking the Japanese telephone toll network as an example. Assuming this network construction, this paper considers three different satellite channel assignment schemes-Pre-Assignment, Timed Pre-Assignment, and Demand Assignment-and introduces a circuit capacity dimensionsing method to minimize the total network cost for each assignment. Finally, a comparison of channel capacity and network cost is made among these assignments under some traffic variation patterns. It was found that Timed Pre-Assignment is the most effective and economical scheme. Demand Assignment is a future technology and its application field is clarified in comparison with other schemes, with the cost increase for realizing Demand Assignment as a parameter. [ABSTRACT FROM AUTHOR]