Energy Optimization of D2D Communications Using Relay Devices and Data Entropy
Résumé
Device-to-device (D2D) communications are an-
nounced as a cornerstone of the next generation of wireless
communications (5G). They offer the promise to drastically
reduce the energy consumption of devices (phones, tablets,
etc.), and increase network coverage areas. In this paper, we
propose to study the influence of a relay device in a D2D
communication. We aim to show the impact of relaying on the
energy consumption. Our work provides a new perspective on
the D2D communications by integrating innovative topology in
these communications. Indeed, D2D is a local-area-based type
of communications. Then, we assume that the data transmitted
by different users have a certain correlation between each other.
Therefore, a new approach is to use the common entropy between
each D2D devices to reduce the amount of data relayed by the
relay device. This minimization leads inevitably to a reduction of
the energy consumed by the relay device, and the network. We
analyze the optimal case (in terms of position of the relay node
and correlation coefficient between different data) to validate the
proposed topology, based on conditional entropy.