4 What are the demands?

According to today’s discussions in the standardisation bodies, 5G wireless communication networks will for the first time additionally resort to high bit rate mm wave-communication technologies not only for small cell front-/back-haul, but as well for short range access. The discussions around the carrier frequencies and other communication parameters have not settled yet, though we can expect that such links will target for bit-rates of 10 Gbit/s or beyond and will cover shorter ranges of 1-100 m perhaps. The following chart on figure 3.1 gives the spectral allocations in the 5G emphasis the targeted frequency bandwith.

Fig.4.1: Foreseen 5G spectral allocation

Beyond extending operation to higher frequencies, there are several other key technology components relevant for the evolution to 5G wireless access. These components include access/backhaul integration, device-to-device communication, flexible duplex, flexible spectrum usage, multi-antenna transmission, ultra-lean design, and user/control separation.
5G_GaN2 project will play a major role in part of these by developing also key technologies.