Decomposition of energy consumption in IEEE 802.11

M Ergen, P Varaiya - 2007 IEEE International Conference on …, 2007 - ieeexplore.ieee.org
M Ergen, P Varaiya
2007 IEEE International Conference on Communications, 2007ieeexplore.ieee.org
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 …
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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