I. Introduction
The 5th Generation (5G) of mobile networks promises to offer capabilities which extend far beyond the ones of previous generations, bringing new kind of services, and interconnecting and controlling not only people but also machines, objects and devices [2]. Some of these capabilities include higher data rates and capacity, enhanced mobility, availability and reliability, lower latency, massive access and low energy consumption, among many others which fulfill the requirements of the three families of use cases that have been established: Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), and Ultra Reliable Low Latency Communications (URLLC).