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Energy Efficient Sampling Policies for Edge Computing Feedback Systems

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Energy Efficient Sampling Policies for Edge Computing Feedback Systems-TMC.pdf (822.2Kb)
Identificadores
URI: http://hdl.handle.net/20.500.12761/1572
DOI: 10.1109/TMC.2022.3165852
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Autor(es)
Moothedath, Vishnu Narayanan; Champati, Jaya Prakash; Gross, James
Fecha
2022-04-08
Resumen
We study the problem of finding efficient sampling policies in an edge-based feedback system, where sensor samples are offloaded to a back-end server that processes them and generates feedback to a user. Sampling the system at maximum frequency results in the detection of events of interest with minimum delay but incurs higher energy costs due to the communication and processing of redundant samples. On the other hand, lower sampling frequency results in higher delay in detecting the event, thus increasing the idle energy usage and degrading the quality of experience. We quantify this trade-off as a weighted function between the number of samples and the sampling interval. We solve the minimisation problem for exponential and Rayleigh distributions, for the random time to the event of interest. We prove the convexity of the objective functions by using novel techniques, which can be of independent interest elsewhere. We argue that adding an initial offset to the periodic sampling can further reduce the energy consumption and jointly compute the optimum offset and sampling interval. We apply our framework to two practically relevant applications and show energy savings of up to 36% when compared to an existing periodic scheme.
Compartir
Ficheros
Energy Efficient Sampling Policies for Edge Computing Feedback Systems-TMC.pdf (822.2Kb)
Identificadores
URI: http://hdl.handle.net/20.500.12761/1572
DOI: 10.1109/TMC.2022.3165852
Metadatos
Mostrar el registro completo del ítem

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