Changes between Initial Version and Version 1 of MobiSys2008_


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Timestamp:
Jun 29, 2008, 3:44:01 PM (16 years ago)
Author:
jdavis
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  • MobiSys2008_

    v1 v1  
     1= Micro Power Management of Active 802.11 Interfaces =
     2
     3Authors: J. Liu, L. Zhong
     4
     5Submitted to MobiSys 2008
     6
     7== Abstract ==
     8Wireless interfaces are major power consumers on mobile systems.  Considerable research has improved the energy efficiency of elongated idle periods or created more elongated idle periods in wireless interfaces, often requiring cooperation from applications or the network infrastructure.  With increasing wireless mobile data, it has become critical to improve the energy efficiency of active wireless interfaces. In this work, we present micro power management (u Pm), a solution inspired by the mismatch between the high performance of state-of-the art 802.11 interfaces and the modest data rate requirements by many popular network applications.  uPM enables an 802.11 interface to enter unreachable power-saving modes even between MAC frames, without noticeable impact on the traffic flow.  To control data loss, uPM leverages the retransmission mechanism in 802.11 and controls frame delay to adapt to demanded network throughput with minimal cooperation from the access point.  Based on a theoretical framework, we employ simulation  to systematically investigate an effective and efficient implementation  of u Pm.  We have built a prototype u Pm on an open-access wireless hardware platform.  Measurements show that more than 30% power reduction for the wireless transceiver can be achieved with uPM for various applications without perceptible quality degradation. 
     9{{{
     10        @inproceedings{Liu:2008,
     11        Author = {J. Liu, L. Zhong},
     12        Booktitle = {MobiSys'2008,
     13        Title = {Micro Power Management of Active 802.11 Interfaces},
     14        Year = {2008}}
     15
     16}}}
     17