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CORMOS: a communication-oriented runtime system for sensor networks

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2 Author(s)
Yannakopoulos, J. ; Inst. of Comput. Sci., Found. for Res. & Technol.-Hellas, Crete, Greece ; Bilas, A.

Recently there has been a lot of activity in building sensor prototypes with processing and communication capabilities. Early efforts in this area focused on building the devices themselves and on understanding network issues. An issue that has not received as much attention is generic runtime system support. In this paper, we present CORMOS, a communication-oriented runtime system for sensor networks. CORMOS is tailored: (i) to provide easy-to-use abstractions and treat communication as a first class citizen rather than an extension, (ii) to be highly modular with unified application and system interfaces, and (iii) to deal with sensor limitations on concurrency and memory. We describe the design of CORMOS, discuss various design alternatives, and provide a prototype implementation on a real system. We present preliminary results for resource requirements of CORMOS using a pair of sensor devices. We find that the runtime system and a simple network stack can fit in 5.5 KBytes of program memory, occupying about 130 Bytes of RAM. On the specific devices we use, the system is able to process events at a rate of 2500 events/sec. When communicating over the radio transceiver, CORMOS achieves a maximum rate of 20 packets/sec.

Published in:

Wireless Sensor Networks, 2005. Proceeedings of the Second European Workshop on

Date of Conference:

31 Jan.-2 Feb. 2005