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001-es BibID:BIBFORM071876
Első szerző:Novac, Ovidiu
Cím:Modeling RF-based sensor networks by using dual-source retrial queueing systems / Ovidiu Constantin Novac, Tamás Bérczes, Attila Kuki, Ádám Tóth, Wolfgang Schreiner
Megjegyzések:Here, we would like to study the efficiency andutilization of radio frequency (RF) transmission in wireless sensornetworks. A new dual source queueing model (with finite andinfinite numbers of sensors) is introduced in order to obtainthe most frequently studied system performance characteristics(e.g. mean response time, average number of jobs waiting fortransmission, and the utilization of the RF unit). The differenttypes of sensors form the "sources" and the RF unit formsthe "central servicing node" of this model. The elements of thesensor fields are classified according to their working purposes:The first class is the "Emergency" or "Special" class which isresponsible to notify special rare events (e.g. fire alarms). Theother class is the "Standard" class where sensors measure datafrom standard conventional events or occurrences (eg. motiondetection, wind speed, level of darkness etc). For energy efficiencyreasons the Central Unit (or Radio Frequency Unit - RFU)might switch into a reduced functioning mode. This reducedcommunication mode is for saving energy. The transmissionsare closed in this mode. Returning from the reduced mode twocases are considered and two models are created to comparetheir steady-state system performance characteristics: In the firstmodel, the RF transmission is available randomly to the sensornodes ("Non-Controlled" case). In the other case, the CentralUnit jobs which come from the Special class, can use the wirelessservice immediately ("Controlled" case).
Tárgyszavak:Műszaki tudományok Informatikai tudományok előadáskivonat
wireless sensors
performance evaluation
retrial queueing
stochastic simulation
Megjelenés:2017 14th International Conference on Engineering of Modern Electric Systems (EMES), Oradea, Romania, June 01-02, 2017. - p. 149-153. -
További szerzők:Bérczes Tamás (1975-) (informatikus) Kuki Attila (1964-) (informatikus, matematikus) Tóth Ádám (1990-) (mérnökinformatikus) Schreiner, Wolfgang
Internet cím:DOI
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