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Measuring and Reducing Energy Consumption of Network Interfaces in Hand-Held Devices (1997)
| Citations: | 357 - 0 self |
BibTeX
@MISC{Stemm97measuringand,
author = {Mark Stemm and Randy H. Katz},
title = {Measuring and Reducing Energy Consumption of Network Interfaces in Hand-Held Devices},
year = {1997}
}
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Abstract
Next generation hand-held devices must provide seamless connectivity while obeying stringent power and size constrains. In this paper we examine this issue from the point of view of the Network Interface (NI). We measure the power usage of two PDAs, the Apple Newton Messagepad and Sony Magic Link, and four NIs, the Metricom Ricochet Wireless Modem, the AT&T Wavelan operating at 915 MHz and 2.4 GHz, and the IBM Infrared Wireless LAN Adapter. These measurements clearly indicate that the power drained by the network interface constitutes a large fraction of the total power used by the PDA. We then examine two classes of optimizations that can be used to reduce network interface energy consumption on these devices: transport-level strategies and application-level strategies. Simulation experiments of transportlevel strategies show that the dominant cost comes not from the number of packets sent or received by a particular transport protocol but the amount of time that the NI is in an activ...
Keyphrases
network interface hand-held device reducing energy consumption size constrains transport-level strategy particular transport protocol stringent power total power network interface energy consumption sony magic link next generation hand-held device ibm infrared wireless lan adapter application-level strategy transportlevel strategy large fraction simulation experiment metricom ricochet wireless modem seamless connectivity apple newton messagepad power usage dominant cost
