Decomposition of Energy Consumption in IEEE 802.11
Ergen, M.
Varaiya, P.
Univ. of California, Berkeley;
This paper appears in: Communications, 2007. ICC '07. IEEE International Conference on
Publication Date: 24-28 June 2007
On page(s): 403-408
Location: Glasgow,
ISBN: 1-4244-0353-7
INSPEC Accession Number: 9874766
Digital Object Identifier: 10.1109/ICC.2007.73
Current Version Published: 2007-08-13
Abstract
We derive formulas for the energy J(n) that a station's radio consumes when it transmits 1 MB of data in an IEEE 802.11 network with n stations. Calculations show that J(ra) grows approximately linearly with n, for n ges 4. The useful energy consumed in successful transmission and reception of data is constant; the remaining energy is wasted. When n = 15, the waste amounts to 80 percent of total energy, and this proportion grows with n. More than 60 percent of the waste is due to overhearing - reception of packets intended for another station. Overhearing can be eliminated by using information in RTS/CTS packets.
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