Introduction
Wireless data trac will grow 10,000 fold within the next 20 years
due to ultra-high resolution video streaming, cloud-based work,
entertainment and increased use of a variety of wireless devices.
These will include smartphones, tablets and other new devices,
including machine type communications for the programmable world.
To meet demand, Nokia envisions 5G as a system providing scalable
and exible services with a virtually zero latency gigabit experience
when and where it matters. In addition, 5G will provide at least a
ten-fold improvement in the user experience over 4G, with higher
peak data rates, improved “everywhere” data rates and a ten-fold
reduction in latency.
5G mobile communications will have a wider range of use cases and
related applications including video streaming, augmented reality,
dierent ways of data sharing and various forms of machine type
applications, including vehicular safety, dierent sensors and
real-time control. Starting with trials in 2016 and the deployment
of rst use cases in 2017, the full 5G system will be introduced
in 2019/20 and will be in use well beyond 2030. 5G also needs
the exibility to support future applications that are not yet fully
understood or even known.
In addition to the more traditional cellular access bands below
6 GHz, 5G is expected to exploit the large amount of spectrum above
6 GHz. One or more new radio interface technologies will be needed
to address this regime of frequency bands due to dierent channel
characteristics. Extending the LTE air-interface to frequencies above
6 GHz may be considered, but a simpler and more ecient air
interface can be designed to address specic challenges.
For the end user, 5G should be transparent and seen as one system
guaranteeing a consistent experience. Furthermore, mobile network
operators expect straightforward 5G deployment and operation.
This calls for tight integration of 5G layers with existing systems such
as LTE and their evolution via Single Radio Access Network (RAN)
solutions. This approach will simplify network management from 2G to
5G, and will also enable a gradual introduction of 5G.
The network and deployment exibility, as well as the air interface
design, will help curb the growth of energy consumption. The
consumed energy per delivered bit must fall drastically at both ends of
the radio link, for example, the energy used by unconnected devices
and in network nodes not operating at capacity.
A holistic, exible design and tight integration of existing technologies
are key Nokia priorities.
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www.nokia.com
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