  Localization is an important issue for Wireless Sensor Networks (WSN). A
mobile sensor may change its position rapidly and thus require localization
calls frequently. A localization may require network wide information and
increase traffic over the network. It dissipates valuable energy for message
communication. Thus localization is very costly. The control of the number of
localization calls may save energy consumption, as it is rather expensive. To
reduce the frequency of localization calls for a mobile sensor, we propose a
technique that involves \textit{Mobility Aware Interpolation} (MAINT) for
position estimation. It controls the number of localizations which gives much
better result than the existing localization control schemes using mobility
aware extrapolation. The proposed method involves very low arithmetic
computation overheads. We find analytical expressions for the expected error in
position estimation. A parameter, the time interval, has been introduced to
externally control the energy dissipation. Simulation studies are carried out
to compare the performances of the proposed method with some existing
localization control schemes as well as the theoretical results. The simulation
results shows that the expected error at any point of time may be computed from
this expression. We have seen that constant error limit can be maintained
increasing the time period of localization proportional to rate of change of
direction of its motion. Increasing time period, the energy may be saved with a
stable error limit.
