DocumentCode :
1688942
Title :
A method for optimization of static slot length for maximum utilization of bandwidth in Flex ray protocol
Author :
Kumar, P. R Sunil
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore, India
fYear :
2012
Firstpage :
1
Lastpage :
6
Abstract :
Most of the mechanical and hydraulic parts, nowadays, are replaced by electronic control units in automobile industry. The number of infotainment and multimedia applications has an increasing trend. Hence, the number of Electronic control units and signals in a cyber physical system like vehicles are increased and a high bandwidth protocol for communication between distributed embedded controllers is required. Flexray provides time triggered static segment for the transmission of time critical periodic data and a priority based scheduling of frames in a dynamic segment for transmission of event triggered signals. Number of Electronic control units connected to the Flexray protocol depends on the time units allocated to a particular node. If it can be optimized for maximum utilization, then more electronic control units can be connected to one Flexray bus. In this paper, a method for optimization of static slot length for maximum utilization of every cycle in the hyper period of periodic tasks satisfying its worst case deadline is presented. A linear integer programming problem is developed from its non linear constraints and number of Electronic control units that can be connected for the communication length is also obtained.
Keywords :
automotive electronics; field buses; integer programming; linear programming; road traffic control; Flex ray protocol; cyber physical system; distributed embedded controller; dynamic segment; electronic control units; high bandwidth protocol; linear integer programming problem; maximum bandwidth utilization; priority based frame scheduling; static slot length optimization; time critical periodic data; time triggered static segment; Bandwidth; Flexible printed circuits; Linear programming; Payloads; Protocols; Radiation detectors; Real time systems; Flex ray; in-vehicle network; integer programming; real-time distributed systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computing, Communication and Applications (ICCCA), 2012 International Conference on
Conference_Location :
Dindigul, Tamilnadu
Print_ISBN :
978-1-4673-0270-8
Type :
conf
DOI :
10.1109/ICCCA.2012.6179138
Filename :
6179138
Link To Document :
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