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Scheduling Status Updates to Minimize Age of Information with an Energy Harvesting Sensor
Date
2017-06-30
Author
Bacınoğlu, Baran Tan
Uysal, Elif
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Age of Information is a measure of the freshness of status updates in monitoring applications and update-based systems. We study a real-time sensing scenario with a sensor which is restricted by time-varying energy constraints and battery limitations. The sensor sends updates over a packet erasure channel with no feedback. The problem of finding an age-optimal threshold policy, with the transmission threshold being a function of the energy state and the estimated current age, is formulated. The average age is analyzed for the unit battery scenario under a memoryless energy arrival process. Somewhat surprisingly, for any finite arrival rate of energy, there is a positive age threshold for transmission, which corresponding to transmitting at a rate lower than that dictated by the rate of energy arrivals. A lower bound on the average age is obtained for general battery size.
Subject Keywords
Energy harvesting
,
Telecommunication scheduling
,
Telecommunication power management
,
Sensors
URI
https://hdl.handle.net/11511/53982
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
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B. T. Bacınoğlu and E. Uysal, “Scheduling Status Updates to Minimize Age of Information with an Energy Harvesting Sensor,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53982.
