As we are heading towards 5G, the networks are becoming
more heterogeneous. The main aspect that has attracted many,
is the integration among different radio access technologies.
A distinctive 5G aided device should be manufactured whose
radios not only support a new 5G standard like millimeter
wave frequencies, but also 3G, various releases of 4G LTE,
numerous types ofWiFi, and possibly direct device to device
communication, all across the different spectral bands [67].
So, dening of standards and utilization of spectrum to which
base station or users will be a really intricate job for the
network [68]