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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yifeng He Wenwu Zhu Ling Guan |
| Copyright Year | 2011 |
| Description | Author affiliation: Microsoft Research Asia, Beijing, China (Wenwu Zhu) || ECE Department, Ryerson University, Toronto, Canada (Yifeng He; Ling Guan) |
| Abstract | Body Sensor Networks (BSNs) are promising in pervasive health monitoring applications. One of the major challenges in BSNs is the sustainable power supply since each body sensor has limited battery capacity. In this paper, we optimize the source rate of the sensor to provide an uninterrupted service for BSNs with energy harvesting. First, we employ a discrete-time Markov chain to model the energy harvesting process at each sensor, and then theoretically analyze the relationship between the source rate and the uninterrupted lifetime of the sensor. Second, we formulate a steady-rate optimization problem, which minimizes the rate fluctuation with respect to the average sustainable rate via optimal source rate allocation at each sensor, under the requirement of the uninterrupted service. We propose an analytical solution to solve the optimization problem. In the simulations, we demonstrate that the proposed optimal solution enables the BSN to maintain an uninterrupted service with a steady output rate at each sensor. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 147697 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781612843483 |
| ISSN | 19457871 |
| e-ISBN | 9781612843506 |
| e-ISBN | 9781612843490 |
| DOI | 10.1109/ICME.2011.6012147 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-07-11 |
| Publisher Place | Spain |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Markov processes Optimization Energy states Energy harvesting Batteries Power demand Body sensor networks uninterrupted service eHealth optimal source rate allocation sustainable power supply energy harvesting discrete-time Markov chain |
| Content Type | Text |
| Resource Type | Article |
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