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Common Platform Battery and Energy Consumption Model for IEEE 802.15 Wireless Networks

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11 diapositives · 253 Views · Oct 24, 2014

This document outlines a common platform battery and energy consumption model aimed at providing a standardized evaluation framework for proposals and modifications in the IEEE P802.15 Working Group for Wireless Personal Area Networks. The purpose of the model is to facilitate discussions on energy efficiency by establishing a shared language and baseline for assessing the energy performance of various implementations. Key parameters include platform states, battery characteristics, environmental influences, and the impact of physical and MAC layer assumptions.

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Common Platform Battery and Energy Consumption Model for IEEE 802.15 Wireless Networks
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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Platform Battery/Energy Consumption Model Date Submitted: July 13. 2009 Source: Daniel Sexton Contact: Daniel Sexton, General Electric Global Research Voice: +1 518 387 4121 , E-Mail: sextonda@crd.ge.com Re: Abstract: A Common Platform Battery/ Energy Consumption Model Purpose: Common ground for evaluating proposals and modifications Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Slide 1

  2. Proposal for Platform Energy Model 802.15.4g/e IEEE 802.15.4g/e Joint Task Group

  3. Contents • Motivation • Model Basis • Basic Model parameters • Simplified Example

  4. Motivation for Energy Consumption Model • Requirements such as “20 year battery life” have no meaning other than to provide motivation for lower energy consumption. • Energy consumption is highly dependent on physical implementation both hardware and software. It is dependent on the assumptions made by the proposer. • A common platform energy model can be used to evaluate proposal for both phy and mac just as a channel model can be used to evaluate phy/mac performance and reliability. • An Energy consumption model may not accurately reflect optimizations a particular designer might make but can provide a common language and allow us to communicate with one another better and to evaluate proposals better.

  5. Model Basis Environment Temperature Transmit PA Receive LAN Security Microprocessor Memory ADC/DAC MAC User Application Channel PER Battery Capacity Leakage Efficiency Clock Accuracy

  6. Model Parameters • Platform states • Sleep, Warmup, TX, RX, Application, MAC Processing. • Battery • Capacity, Efficiency(Temp,Current), Self Discharge(Temp) • Clock • Accuracy(Temperature, Aging, Vibration) • Environment • Temperature • Channel • PER, Loss of network

  7. Batteries [1] Example: Saft LS17500 A cell Li-SOCL2 A cell 3.6V 3.6AH -60C to +85C Self discharge 1%/yr @ 20C [1] [2] [1] [1] Saft LS17500 data sheet [2] http://www.mpoweruk.com/performance.htm

  8. Parameters

  9. Example of Use • Decide on relevant operation interval. • Determine and list operational assumptions. • Determine time spent in each state • Determine assumptions for current consumption and efficiency for each state. • Calculate life

  10. What is needed • Agreement on appropriate complexity for metric. • Agreement on what operating parameters should be fixed, what can be adjusted by the proposer. • How the model should be used. • How assumptions are communicated.

  11. Discussion?