Tamás Bérczes
ABSTRACT
This paper deals with wireless transmission problems in sensor networks. In order to study the performance measures and characteristics, a finite source retrial queueing model is introduced. Two classes of sensors are considered: "time driven" sensors for normal requests and "event driven" sensors with high priority for special, eg. emergency requests.
The main goal is to investigate the relationship between the performance and the energy usage of the sensor network. Two operations are compared. In the first case only the event driven requests can initiate reaching the radio transmission (RF) unit. Time driven requests have to wait for a listening period of RF unit. In the second case the time driven requests also are able to access the sleeping RF unit, which will go to power save (sleeping) state immediately after the job is served.
The steady-state performance measures and probabilities are given by the help of the MOSEL-2 tool.
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Digital Library
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Index Terms
- Modeling the performance and the energy usage of wireless sensor networks by retrial queueing systems
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