By developing a sin

By developing a sin-

Spectrum bands Current user WRC-15 target

gle 5G standard to cope with both mobile a broadcast industry demands, an optimum usage of

the spectrum based

on spectrum sharing

Parts of 500-600 MHz

[470-around 694 MHz]

700 MHz

[694-790 MHz]

Parts of 1.4 GHz

[1350-1525 MHz]

TV broadcasting

PMSE

TV broadcasting

PMSE

Digital radio Fixed service Scientific

Regional identification for IMT usage

Need cooperation with broadcast industry

IMT identification for Region 1

Proposed in WRC-12 and included in the WRC-15 AI 1.2

Global identification for IMT usage

Scientific use, only in a part of frequencies and some parts of regions

would be enabled. A

coordinated spec-

2700-2900 MHz Radar Global identification for IMT usage

trum access, as opposed to a com- petitive and mutual- ly-interfering access,

3.4-3.6 GHz IMT Satellite

3.6-3.8 GHz IMT Satellite

Global identification for IMT usage

Global identification for IMT usage

would also enable infrastructure sharing and simplified inter- national frequency

Parts of 3.8-4.2 GHz Satellite Global identification for IMT usage

Parts of 4.4-4.99 GHz Satellite Global identification for IMT usage

Table 1. Possible candidate bands for IMT under WRC-15 Agenda Item 1.1.

coordination.

and its future evolutions, and broadcasters are facing the definition of a worldwide DTT stan- dard capable of supporting both rooftop and mobile reception.

In this framework, it is quite likely that these two industries, with their different network infrastructures, will compete for market and spectrum. However, the above mentioned trends for cooperation highlight the mutual benefit of a complementary use of both networks. For exam- ple, broadcasters need more infrastructure to provide mobile services to indoor users. The def- inition of the future 5G system brings a new opportunity for convergence, which would bene- fit both industries alike.

SPECTRUM USAGE:

FROM A PROBLEM TO A SOLUTION

Future 5G mobile communications systems are required to make a flexible and efficient use of the available spectrum, whether contiguous or not, supporting wildly different network deploy- ment scenarios [4]. In 2020

...