The widespread use of new generatio

The widespread use of new generation mobile devices,
together with the increasing popularity of Web 2.0 and cloud
applications, will lead to a massive gain of data traffic from/to
mobile users [1]. In order to satisfy these requirements,
and guarantee a good level of Quality of Service (QoS)
offered to mobile users, the 3rd Generation Partnership Project
(3GPP) has introduced Long Term Evolution (LTE) and LTEAdvanced
(LTE-A) specifications as the next step of the
current 3G mobile networks