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MEERA: cross-layer methodology for energy efficient resource allocation in wireless networks

In many portable devices, wireless network interfaces consume upwards of 30% of scarce system energy. Reducing the transceiver's power consumption to extend the system lifetime has therefore become a design goal. Our work is targeted at this goal and is based on the following two observations....

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Published in:IEEE transactions on wireless communications 2007-02, Vol.6 (2), p.617-628
Main Authors: Pollin, S., Mangharam, R., Bougard, B., Van der Perre, L., Moerman, I., Rajkumar, R., Catthoor, F.
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cited_by cdi_FETCH-LOGICAL-c389t-738b78932da1ac2f2d87e99cc4df8455136d849ea6ea687c2ed2a59e74a044753
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description In many portable devices, wireless network interfaces consume upwards of 30% of scarce system energy. Reducing the transceiver's power consumption to extend the system lifetime has therefore become a design goal. Our work is targeted at this goal and is based on the following two observations. First, conventional energy management approaches have focused independently on minimizing the fixed energy cost (by shutdown) and on scalable energy costs (by leveraging, for example, the modulation, code-rate and transmission power). These two energy management approaches present a tradeoff. For example, lower modulation rates and transmission power minimize the variable energy component, but this shortens the sleep duration thereby increasing fixed energy consumption. Second, in order to meet the quality of service (QoS) timeliness requirements for multiple users, we need to determine to what extent each system in the network may sleep and scale. Therefore, we propose a two-phase methodology that resolves the sleep-scaling tradeoff across the physical, communications and link layers at design time and schedules nodes at runtime with near optimal energy-efficient configurations in the solution space. As a result, we are able to achieve very low run-time overheads. Our methodology is applied to a case study on delivering a guaranteed QoS for multiple users with MPEG-4 video over a slow-fading channel. By exploiting runtime controllable parameters of actual RF components and a modified 802.11 medium access controller, system lifetime is increased by a factor of 3-to-10 in comparison with conventional techniques
doi_str_mv 10.1109/TWC.2007.05356
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identifier ISSN: 1536-1276
ispartof IEEE transactions on wireless communications, 2007-02, Vol.6 (2), p.617-628
issn 1536-1276
1558-2248
language eng
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source IEEE Xplore (Online service)
subjects Applied sciences
Business and industry local networks
Control systems
Costs
Energy consumption
Energy costs
Energy efficiency
Energy management
Exact sciences and technology
Methodology
Modulation
Networks
Networks and services in france and abroad
Operation, maintenance, reliability
Quality of service
Radiocommunications
Resource management
Runtime
Sleep
Studies
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission and modulation (techniques and equipments)
Transmitters. Receivers
Wireless communication
Wireless networks
title MEERA: cross-layer methodology for energy efficient resource allocation in wireless networks
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