ISSN : 1796-2021
Volume : 2    Issue : 7    Date : December 2007

Optimization of Radio Measurements Exploitation in Wireless Mobile Networks
Afef Ben Hadj Alaya-Feki, Alain Le Cornec, and Eric Moulines
Page(s): 59-67
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Radio measurements play a crucial role in mobile wireless networks as they are input of Radio
Resource Management (RRM) mechanisms, needed to assess mobile network reliability and to
supervise the planned coverage area. Nevertheless, these measurements are used in their crude
state without any additional intelligent treatment whereas they are a rich and unexploited source of
information for the network. In this paper, we propose a new approach for the manipulation of
existing radio measurements in wireless mobile networks. The goal is to optimize the use of these
measurements with new approaches of exploitation in different locations of the network, basing on
advanced signal processing tools. This new approach is based on nonparametric regression and
smoothing methods. Interesting results are inferred from this analysis, based on real
measurement traces collected in different environments and situations. Main results are the
elaboration of a dynamic estimator of the attenuations components (pathloss, shadowing and fast
fading), a method for the determination of the mobile user situation (incar, pedestrian and
unmoving) as well as ameliorations in the handover procedure. We conclude that integrating
advanced radio signal processing in RRM mechanisms is an efficient and easy-toimplement way
for a better use of radio measurements.

Index Terms
Radio measurements, optimization, wireless mobile networks, non parametric, smoothing,
regression methods