NDLI: Understanding and closing the gap between requirements on system and subsystem level

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Understanding and closing the gap between requirements on system and subsystem level

Content Provider	IEEE Xplore Digital Library
Author	Teufl, S. Bohm, W. Pinger, R.
Copyright Year	2014
Description	Author affiliation: Tech. Univ. Munchen, Garching, Germany (Bohm, W.) \|\| Infrastruct. & Cities Sector, Siemens AG, Braunschweig, Germany (Pinger, R.) \|\| Fortiss GmbH, München, Germany (Teufl, S.)
Abstract	In systems engineering, the increasing complexity of systems is handled by decomposing systems into subsystems. As part of the decomposition typically more abstract system requirements are refined to more detailed subsystem requirements. Refining system requirements to subsystem requirements includes the two steps interface refinement on the system boundaries, and a decomposition of system requirements to subsystem requirements. In order to apply formal analysis and verification techniques on the refinement of requirements, a formal refinement specification is necessary. In this paper we show the results of an exploratory industrial case study provided by Siemens, where we analyzed the refinement from system to subsystem requirements. We show that formal refinement specifications can become very complex, when interface refinement and requirement decompositions are performed in one step. In order to reduce complexity in the formal refinement specification, we introduce a formal restructuring approach for requirements. The main benefits of this restructuring approach are twofold. It enables reuse of requirements and knowledge preservation on the system level when the system architecture changes. Furthermore, quality assurance of the refinement on system level can now be performed independently from the system decomposition.
Starting Page	77
Ending Page	86
File Size	1011821
Page Count	10
File Format	PDF
ISBN	9781479963430
DOI	10.1109/MoDRE.2014.6890828
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-25
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Case study Analytical models Quality assurance Modelling language Systems engineering Abstracts Syntactics Complexity theory Requirements engineering
Content Type	Text
Resource Type	Article

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