5G vision and Roadmap to Key Standards

5G vision and Roadmap to Key Standards

Loading
Loading Social Plug-ins...
Language: English
Save to myLibrary Download PDF
Go to Page # Page of 15

Description: Main Telefónica’s expectations for 5G: - a Better way of supporting current mobile services (lower cost, improved performance, improved experience continuity. Support of new services that cannot be provided with 4G technologies (ultra low latency, massive Internet of Things (IoT) services, ultra-high-reliability services. Capacity to personalize services for specific applications (vertical industrial applications, safety.

 
Author: Telefonica (Fellow) | Visits: 376 | Page Views: 561
Domain:  High Tech Category: Mobile 
Upload Date:
Link Back:
Short URL: https://www.wesrch.com/electronics/pdfEL1WSS000JBHU
Loading
Loading...



px *        px *

* Default width and height in pixels. Change it to your required dimensions.

 
Contents:
5G vision and roadmap to
key standards
Telefónica viewpoint

Brussels, April 20th, 2016

01

Our main objectives
for 5G

Main Telefónica’s expectations for 5G
1

Better way of supporting current mobile services (lower cost, improved
performance, improved experience continuity,…)

2

Support of new services that cannot be provided with 4G technologies (ultra
low latency, massive Internet of Things (IoT) services, ultra high reliability
services,…)

3

Capacity to personalize services for specific applications (vertical industrial
applications, safety,…)

What are the main standardization and regulatory decisions
that need to be taken to make this feasible?
3

Is lack of capacity a driver for 5G?
Not yet

• We are continuously monitoring the evolution of the traffic demand
and trying to assess when and where we may reach the capacity
limit of LTE, considering two options:
o Firstly, if we do nothing (keeping the same number of sites and sectors,
with the current configuration)
o Secondly, if we implement preventive actions (acquisition of new
spectrum, higher level of sectorization, deployment of small cell layer,
introduction of new features to enhance LTE spectral efficiency,…)

• So far, we do not consider that lack of capacity is one of the main
drivers for pushing for an early introduction of 5G
o 60-80% of the sites can survive to the most optimistic growth scenarios
o Less than 2-4% of the sites may not be able to cope with the demand
growth during the busy hour even if standard corrective actions are
undertaken, but can be addressed with ad-hoc solutions

• However, there are many factors that may change the current
perspective (traffic growth in the uplink due to applications like
Periscope, higher video consumption,…)
4

02

What we need to do
(soon)

Short term actions for Telefónica
Getting 5G right









Liaising with vertical industries, governments and other
stakeholder groups in order to identify and develop
mutually beneficial business cases that may require or
benefit from the deployment of 5G networks.
Getting the requirements for different 5G use cases
right, so they really reflect the performance and
functionalities required for the potential users of the
services.
Cooperating with other operators and vendors in order
to avoid fragmentation in the standardization process.
Ensuring the support of network slicing, so the network
can be customized for the support of specific
applications in selected geographical areas.
Identifying those 5G technological components that
may help to bring economic efficiencies to mobile
networks (beyond the expected technical
enhancements).

6

European

projects are one
of the main
instruments we
have to progress
in these areas
Fostering an
open innovation
ecosystem is
another one
(e.g., 5TONIC)

03

Our position in
standardization

5G Standardization
• Standardization efforts for 5G are already underway within the ITUR, where a timeline and process for IMT-2020 has been established.
• 3GPP has recently launched the standardization efforts for 5G and
is considered to be one of the primary standard bodies to submit
candidate technology for IMT-2020 consideration.
• But there are players (like Verizon and some Asian operators) that
plan to commercialize 5G services even before the technology is
standardized
Is 3GPP being too slow (or to fast) in its plans to standardize 5G?
Can we expect other 5G proposals that may be competitive with the
one from 3GPP?
8

New 5G Radio Interface - NR
• Most of the proposed modifications are defined towards achieving
three main objectives:
o Increase the spectral efficiency, mainly by relaxing orthogonality
requirements
o Allow for the support of billions of MTC devices accessing the network
o Reducing the latency in order to support the requirements of the ultra
reliable communications use case

• There are features that may be incorporated to LTE to support
some of these objectives, e.g., a shorter TTI
• It is not clear to us whether a unified air interface for all frequency
bands is a good option (but we hope so)
• So far we have not seen any proposal that we may consider
differential or a major leap forward

9

Use of high frequency bands
• The use of high frequency bands represents a huge opportunity but
also a significant technical challenge
• At this point in time, we are not sure that there is a solution that is
ready to become commercial in the medium term
o High frequency bands require beamforming to overcome larger path loss
o But analogue and hybrid beamforming solutions may be suboptimal

• On the other hand, the potential combination of selfback/fronthauling and the access using same RAT may help to
have a low cost solution for the required densification of the
network
• Clarification in terms of the spectrum to be used is a major
requirement
10

5G Network Architecture
Risk of missing an opportunity

• Main objectives in the definition of the new architecture are:
o Support of the requirements (functional, performance, scalability,…)
coming from the different 5G use cases foreseen
o Support of network slicing as a way of introducing and supporting
new services

• It seems clear that 5G will incorporate NFV, SDN and MEC
new architectural frameworks in order to achieve this
objectives
• We would consider a missing opportunity if 5G network
architecture becomes just a virtualized LTE EPC

o E.g., is the way that mobility is supported the optimal one,
considering the new features 5G is expected to support, like massive
MIMO? Or is the network architecture the optimal one for the
support of V2V communications?
11

Spectrum for 5G

Adequate regulation is mandatory to foster investment

• We need to identify the suitable high frequency spectrum for
5G in the ITU Radio Regulations
o It is necessary to ensure that the candidate bands that have been
proposed for discussion at WRC-19 will be sufficient to meet the
broad range of requirements of the various 5G use cases and
deployment scenarios
o Having access to the amount of spectrum that may allow to support
some of 5G use cases will require to look for it in high frequency
bands (30-100 GHz)

• We need to define the mechanisms to co-exist with other
users of some of the candidate bands, like satellites, fixed
links, PMSE, license exempt devices or Radio Astronomy
12

04

Conclusions

13

Main conclusions
>

We need to get the 5G requirements right. There is a risk
that 5G specifications end up with features that no one
will use or that will not pay for themselves.

>

So far, we have not identified a new radio technology
that may constitute a major leap forward in terms of
spectral efficiency. There, however, significant
improvements in terms of addressing some of the weak
points that actual technologies present.

>

Sofwarization of the network represents a huge
opportunity that we may partially miss if we rush to
having standards ready very soon.
14