NDLI: A Process Health Status Service for Safety Related Systems Using TT/ET Communication Scheduling

Content Provider	IEEE Xplore Digital Library
Author	Bergenhem, C. Karlsson, J.
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Chalmers Univ. of Technol., Goteborg, Sweden (Karlsson, J.) \|\| Dept. of Electron., SP - Tech. Res. Inst. of Sweden, Boras, Sweden (Bergenhem, C.)
Abstract	This paper describes a health status protocol for distributed real-time systems that use TTCAN, Flexray, or other networks which support both time-triggered and event-triggered communication. The protocol allows a group of co-operating processes to establish a consistent view of each other¿s health status over time. It extends the instantaneous view, of operational status of each process, provided by a process group membership protocol. The health status and membership protocols are intended for systems where processes (not nodes) are considered the smallest unit of failure, and where process failures can be detected and recovered locally by the host node. Such systems require a decision function that determines whether a process failure is temporary (the process is being recovered by the host node) or permanent (local recovery is not possible or was unsuccessful). Our protocol ensures that such decisions are made consistently among correct nodes despite symmetrical and asymmetrical omission failures.
Starting Page	122
Ending Page	131
File Size	438436
Page Count	10
File Format	PDF
ISBN	9780769534480
DOI	10.1109/PRDC.2008.42
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-15
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Health and safety Protocols Counting circuits Real time systems Condition monitoring Runtime environment Communication networks Fault tolerant systems Protection Memory management Fault-tolerance protocol
Content Type	Text
Resource Type	Article

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