교환시스템의 서비스 품질수준 향상을 위한 소프트웨어 블록의 중요도 결정 = Determination of Importance of Software Blocks for Improving Quality of Service in Switching System

다국어 초록 (Multilingual Abstract)

The switching system is designed and developed to satisfy the performance design objectives recommended by ITU for call processing capacity and quality of service(QOS), etc. When the results by actual measurement at the system testing phase do not satisfy the performance design objectives, however, an effort is required to improve the performance.
This paper presents a method for improving QOS by modifying the application programs for the switching system. In the proposed method, the sequence chart related to a delay time for call connection is modelled using PERT(Program Evaluation and Review Technique) network. Then, the criticality index of a message is calculated using Monte Carlo simulation to evaluate which message's processing time to decrease in order to decrease the delay time and thus to improve QOS. The criticality index of a block is also calculated to identify those software blocks that significantly contribute to the delay time.

목차 (Table of Contents)

• Ⅰ. 서 론
• Ⅱ. 서비스 품질수준의 규정 및 평가방법
• Ⅲ. PERT 모델링 방법
• Ⅳ. 결정지수(criticality index)의 평가 방법
• Ⅴ. 결 론
• 참고문헌
• Abstract