Jeong Kwang Jae

The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 3, No. 7, pp. 1727-1738, Dec. 1996
10.3745/KIPSTE.1996.3.7.1727,   PDF Download:

Abstract

This paper proposes a extended service filtering technique to solve overload control problems in Service Control Point(SCP) due to Televoting (VOT) services with heavy traffic characteristics. Also, this paper compares this new technique with existing IN overload control techniques, and calculate steady state call blocking probabilities in IN under overload conditions, The proposed technique considers SCP overload nad IN CS-1 services such as VOT service that need to use the specialized resources of IP. This technique uses first an activating step which SCP sends service filtering request to SSP and IP for the start of service filtering. Then, in the filtering step sends filtering results to SCP periodically each N-calls. Also, when filtering time-out timer expired of call counter value exceeded maximum number of calls, SSP stops service filtering, and sends service filtering response to SCP in the deactivating step. The application of this technique to VOT service defined in IN CS-1 service is investigated and analyzed by using an analytical VOT service model. In order to apply this technique to VOT service, this paper also discusses VOT service and the corresponding N architecture including service Switching Point(SSP), SCP and IP. Then this paper also constructs an analytical VOT service model, and calculates SCP and SSP/IP(circuit) call blocking probabilities. With the application of this new technique, this paper shows good performance enhancements in SCP call blocking probability.

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