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자료유형
학술저널
저자정보
저널정보
SK텔레콤 Telecommunications Review Telecommunications Review 제6권 제3호
발행연도
1996.1
수록면
314 - 332 (19page)

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This paper presents an automated protocol conformance test sequence generation based on formal methods for LOTOS specifications. We use the state-transition graphs obtained from LOTOS specifications by means of the CAESAR tool. This tool compiles a specification written in LOTOS into an extended Petri net, from which a transition graph of a event finite-state machine(EvFSM) including data is generated. A new characterizing sequence(CS), called Unique Event sequence(UE sequence) is defined. An UE sequence for a state is a sequence of aaccepted gate events that is unique for this state. Some experiences about UE sequence, partial UE sequence and signature are also explained. These sequences are combined with the concept of the Rural Chinese Postman Tour to obtain an optimal test sequence which is a minimum cost tour of the reference transition graph of the EvFSM. This paper also presents a fault coverage estimation experience of an automated method for optimized test sequences generation and the translation of the test sequence obtained by using our tool on each issue are also given. This formal method on conformance tesing can be applied to the protocols related to DCS, PCS, and GSM for the purpose of verifying the correctness of implementation with respect to the given specification.

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