Overload Control for the Intelligent Network and Its Analysis by Simulation

Takuya ASAKA
Shuichi SUMITA

IEICE TRANSACTIONS on Communications   Vol.E78-B    No.4    pp.494-503
Publication Date: 1995/04/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Traffic and Quality Control for Communication Networks)
overload control,  Intelligent Network,  overloaded SCP,  acceptable number of calls,  various types of services,  

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This paper reports an overload control method for the Intelligent Network (IN). The IN, which is being investigated as a future communication network, facilitates both rapid introduction of new services and easy modification of existing services. In the IN, the call processing functions and data needed to achieve IN services are distributed over several nodes. Therefore, traffic demand for the various services may cause varying patterns of node overloads. It is therefore important to develop effective overload control methods and to evaluate their characteristics. We propose an overload control method and evaluate its characteristics in comparison with other methods under various overload traffic patterns with a network simulator that models all nodes and their relationships in the IN. In particular, we focus on three aspects of overload control: how can high throughput be maintained, how can an overloaded node be stabilized, and how can fair access be guaranteed.