Authors:
Dennis Christmann
;
Tobias Braun
;
Markus Engel
and
Reinhard Gotzhein
Affiliation:
University of Kaiserslautern, Germany
Keyword(s):
Real-time, Wireless Networks, Communication Protocols, Implementations, Operating Systems.
Related
Ontology
Subjects/Areas/Topics:
Biomedical Engineering
;
Biomedical Signal Processing
;
Digital Signal Processing
;
Embedded Communications Systems
;
Networking and Connectivity
;
Real-Time Systems
;
Telecommunications
Abstract:
Distributed real-time systems present a particular challenge, because two key problems have to be solved during
their development: First, deployed protocols must provide deterministic behavior to enable a predictable
outcome. Second, the implementations of the protocols have to be in compliance with the stringent timing
constraints stated by the protocols to ensure that their runtime behavior remains deterministic. This, particularly,
requires an adequate isolation of time-critical protocols from less preferential applications installed on
the same node. In this paper, we present the protocol framework BiPS, which tackles these challenges for
wireless sensor networks and Imote 2 hardware platforms. Besides summarizing the various MAC protocols
– both best effort and real-time-capable protocols – and operating system functionalities provided by BiPS,
this paper presents comparative evaluations with TinyOS, a state-of-the-practice operating system for wireless
sensor networks, and the
real-time operating system RIOT. The results show that protocols realized with
BiPS outperforms these solutions w.r.t. predictability of execution times, thereby providing evidence of the
advantages of BiPS for real-time systems.
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