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Grazie5G experimental activities in Flex5Gware project
focus on RAN virtualization
Dario Sabella (Telecom Italia)
IEEE 5G Berlin SummitFraunhofer-Forum Berlin, November 2, 2016
2IEEE 5G Summit (Berlin, November 2, 2016)
Agenda
• Telecom Italia presentation
• Experimental activities in Flex5Gware project (5G PPP)
• The path toward CRAN and vRAN (operator perspective)
• TIM proof-of-concept on RAN virtualization
• Conclusions and remarks
3IEEE 5G Summit (Berlin, November 2, 2016)
Agenda
• Telecom Italia presentation
• Experimental activities in Flex5Gware project (5G PPP)
• The path toward CRAN and vRAN (operator perspective)
• TIM proof-of-concept on RAN virtualization
• Conclusions and remarks
4IEEE 5G Summit (Berlin, November 2, 2016)
Telecom Italia group 1/2
Employees
59.000
TIM lines in Italy
29.700.000
Revenues (€)
9.100.000.000
Telecom Italia is the main
telecommunication and ICT
operator in Italy, as well as one
of the most important in Latin
America and among the main
global mobile operators
Italian leader in the ICT market,
active in the following sectors:
fixed and mobile communications,
internet and media, systems and
solutions for business, R&D
Strategic markets: Italy, BrasilValues referred to 1H2016
http://www.telecomitalia.com/tit/en/about-us/profile.html
http://www.telecomitalia.com/tit/it/investors/financials/employees.html
5IEEE 5G Summit (Berlin, November 2, 2016)
Telecom Italia group 2/2
The international presence
Italy
Latin america: TIM Brasil Group
International Wholesale services
TI sparkle is an important global service provider, with activites on Voice, IP and data transmission for fixed and mobile operators, ISP and multinational societies (MNCs)
6IEEE 5G Summit (Berlin, November 2, 2016)
Focus on TILAB: Wireless Innovation
Main activities of the dept.
R&D activities, scouting, testing, performance evaluation of wireless systems
(e.g. OFDMA), study of innovative radio access technologies
technological trials (e.g. LTE), support to engineering department
Involvement in standardization bodies and fora (3GPP, ETSI, NGMN, …)
And also EU funded projects, collaboration with vendors and academic world.
https://www.ict-earth.eu/ https://www.metis2020.com/http://www.ict-ijoin.eu/
7IEEE 5G Summit (Berlin, November 2, 2016)
Agenda
• Telecom Italia presentation
• Experimental activities in Flex5Gware project (5G PPP)
• The path toward CRAN and vRAN (operator perspective)
• TIM proof-of-concept on RAN virtualization
• Conclusions and remarks
8IEEE 5G Summit (Berlin, November 2, 2016)
Flex5Gware project overview
Project number: 671563
Project Coordinator: Intel
Technical Management: CTTC
Call / topic: H2020-ICT-2014-2 /
ICT-14-2014Objective 1.1
Duration: 24 months
Begin: 01 July 2015
«Flexible and efficient hardware/software
platforms for 5G network elements and devices»
Industry partners
1. Intel Mobile Comm. (DE)
2. Alcatel Lucent (DE)
3. Ericsson (SE)
4. NEC (UK)
5. Telecom Italia (IT)
Research institutes
7. CEA (FR)
8. CNIT (IT)
9. CTTC (ES)
10. Fraunhofer Institut (DE)
11. iMinds (BE)
12. VTT (FI)
SMEs
9. Sequans (FR)
10. TST Sistemas (ES)
11. WINGS (ES)
Universities
9. KU Leuven (BE)
10. Univ. Carlos III de Madrid (ES)
11. University of Pisa (IT)
https://www.flex5gware.eu
9IEEE 5G Summit (Berlin, November 2, 2016)
Flex5Gware project – General Picture
The overall objective of Flex5Gware is to deliver highly reconfigurable HW platforms together with
HW-agnostic SW platforms targeting both network elements and devices taking into account
increased capacity, reduced energy footprint, as well as scalability and modularity, to enable a
smooth transition from 4G mobile wireless systems to 5G.
Objectives:
1. Increasing HW versatility and reconfigurability
2. Designing and developing HW-agnostic,
flexible and cost-effective SW platforms
3. Increasing the overall achievable capacity
provided by 5G communication platforms
4. Decreasing the overall energy consumed by
5G communication platforms
5. Identifying and prototyping key HW and SW
building blocks and providing a proof of
concept for all developments in Flex5Gware
Legenda
10IEEE 5G Summit (Berlin, November 2, 2016)
WP6 Focus:
integration activities
for the integrated
PoCs and validation,
testing and
demonstration for
all the PoCs (both
standalone and
integrated).
Very strong implementation focus 11 proofs-of-concept
11IEEE 5G Summit (Berlin, November 2, 2016)
Flex5Gware collaboration with 5G PPP:
WP6 perspective and potential joint demonstrations
Flex5Gware will show its PoCs during a final demonstration event
at the end of the project (Turin, June 2017).
Telecom Italia will host the Flex5Gware demonstration activities, thanks to
the presence of TILAB facilities in Turin (Italy), as already done in the past
for the EARTH project demonstrator.
The project’s intention is to also co-operate with research projects
of complementary direction according to the 5G PPP structure, so
as to address a holistic system perspective.
Cross-project demonstrations will be hosted as well as Flex5Gware PoCs
during the final demonstration event in Turin.
Flex5Gware PoCs
12
Innovative proof of concept PoC team (involved partners) TypeDeveloped
in
PoC#1 On chip frequency generation Standalone WP2
PoC#2Active SIW antennas with integrated power
amplifiers for K/Ka frequency bandsIntegrated WP2
PoC#3PAPR reduction and power
amplifier predistortionIntegrated WP2, WP3
PoC#4 Multiband transmitter Integrated WP2, WP3
PoC#5 Full duplex FBMC transceiver Integrated WP3, WP4
PoC#6 High-speed low power resilient LDPC decoder Standalone WP4
PoC#7HW/SW function split for energy
aware communicationsIntegrated WP4, WP5
PoC#8Reconfigurable programmable radio platform
(terminal side) and SW programming
performed and injected by the network
Integrated WP4, WP5
PoC#9Flexible, scalable and reconfigurable
small cell platformStandalone WP5
PoC#10Flexible resource allocation
in CRAN/vRAN platformStandalone WP5
PoC#11 Multi-Chain MIMO Transmitter Integrated WP2, WP3
PoC#1
PoC#2
PoC#3
PoC#4
PoC#5
PoC#6
PoC#7
PoC#8
PoC#9
PoC#10
PoC#11
13IEEE 5G Summit (Berlin, November 2, 2016)
Agenda
• Telecom Italia presentation
• Experimental activities in Flex5Gware project (5G PPP)
• The path toward CRAN and vRAN (operator perspective)
• TIM proof-of-concept on RAN virtualization
• Conclusions and remarks
14IEEE 5G Summit (Berlin, November 2, 2016)
The path toward a fully virtualized networkMotivation for mobile operators
Scenario
• Exponential increase in mobile traffic volume (forecast: 1000-fold increase by 2020).
• This traffic will be unevenly distributed in time and space, due to the nature of mobilebroadband connections.
Operators needs
• Network deployment evolution should adapt to this demand by providing the requiredcoverage, capacity and QoS (Quality of Service). More attention to energy efficiency andoperational costs (CAPEX./OPEX)
Emerging trends
• progressive usage of cloud technologies (traditionally born within IT market) applied toother business sectors (i.e. telco market), and in particular for mobile networks evolution.
• Telecommunication market is already moving progressively toward virtualimplementations of EPC, and recently operators are considering with increasing attentionthe centralization (C-RAN) and virtualization (NFV) of mobile networks functionalities in astandard IT platform.
Benefits
• This will result also in an highly efficient network, able to provide the needed systemthroughput by taking care of costs and utilization efficiency, and also energy efficiencyand sustainability of the mobile network evolution.
• All these aspects are currently carefully evaluated by operators, in the view of futurenetwork deployments, suitable for additional revenue generating services.
15IEEE 5G Summit (Berlin, November 2, 2016)
Mobile Network path toward C-RAN and virtual RAN
As a consequence, a possibility for operators is to evaluate virtualization
of networks, potentially including also RAN (Radio Access Network).
But, before talking about vRAN, it is worth to consider C-RAN evolution
path, starting from present LTE flat architecture.
In fact, some evolutive steps of the mobile network
toward virtual RAN implementation should be envisaged (vRAN is the
last step of an evolution/revolution).
NOTE: C-RAN architecture can be applied for both macro-only and
HetNet scenarios. In this context we will refer specifically to HetNets.
16IEEE 5G Summit (Berlin, November 2, 2016)
C-RAN evolution path …
• Compacted architecture consists in Baseband unit and Radio unit joint in
same module.
• A splitted architecture (with BB unit and Radio unit in different modules)
can be seen as a first centralization step toward C-RAN architecture.
• In C-RAN architecture baseband resources shared (pooled) across RRUs.
pRBS
Compacted architecture with
distributed BB
pRBS
Splittedarchitecture with
BB hotelling
C-RANarchitecture
BB pooling
17IEEE 5G Summit (Berlin, November 2, 2016)
… toward virtual RAN
• In this phase, virtualization (on general purpose HW) enables the abstraction from a particular
Operating System. This is usually done by an “hypervisor”. Some functionalities are executed
running as Virtual Machines (VMs). Examples of VMs in CRAN environment are represented by
single RATs or by sub-systems of the protocol stack of a RAT.
• Virtualization approach of RAN functionalities should follow the general ETSI NFV framework.
eNB
UEVirtual
BaseBand pool
RAP
RAP
RAP
E-UTRAN
18IEEE 5G Summit (Berlin, November 2, 2016)
virtual RAN: advantages for the operator
vRAN got all the C-RAN advantages and add the followings (due to usage of GPP
HW, i.e. General Purpose Hardware):
• the operator can dynamically allocate processing resources within a
centralized baseband pool to different virtualized base stations and different
air interface standards
• HW and SW totally decoupled
for both, cost and management
• simpler inter-vendor
interoperability
• cost reduction to manage,
maintain, expand and upgrade
the base station
19IEEE 5G Summit (Berlin, November 2, 2016)
virtual RAN: implementation issues
In general, in order to satisfy realtime needs given by radio systems, it
may be difficult to implement all eNBs protocol stack on general purpose
HW: in these cases some functionalities (typically PHY layer) are
implemented on dedicated HW.
In any case, full RAN centralization
implies the usage of Fiber (with high
capacity but also most expensive).
If this cable infrastructure is not
available, partial RAN centralization
solutions should be evaluated.
(e.g. the approach of iJOIN
project).
20IEEE 5G Summit (Berlin, November 2, 2016)
Network evolution toward 5GThe need for Mobile edge computing
C-RAN architecture offers to operator the possibility to use green and efficient
infrastructure in order to save costs.
Moreover, the path toward RAN virtualization will open new opportunities:
HW/SW decoupling, multivendor I/O, flexible deployments, …
In addition, new 5G services will introduce more challenging QoS
requirements (especially in terms of latency, energy efficiency, …) that may
be difficult to fulfill only with the implementation of C-RAN.
Then, in the view of future 5G systems, a significant advancement with
respect to C-RAN can be given by the introduction of mobile edge computing:
moving cloud capabilities towards the network edge (i.e. eNBs)
21IEEE 5G Summit (Berlin, November 2, 2016)
Network evolution toward 5GThe need for Mobile edge computing
Mobile edge computing (MEC) permits to extend cloud platform for applications to the
edge of the network (e.g. Base Stations), in order to improve the user experience (also
thanks to the standardization of proper measurements and network APIs).
HSS
MME S/P-GW
ApplicationServer
PCRF
eNB
UEVirtual
BaseBand pool
RAP
RAP
RAP
EPC
E-UTRAN
+ MEC server
+ MEC server
Web
This view is not in contrast with C-RAN architecture: MEC will add flexible
decentralization and proper dynamic instantiation of applications, in close
proximity to terminals (that are also empowered with additional capabilities
through computation offloading).
22IEEE 5G Summit (Berlin, November 2, 2016)
Agenda
• Telecom Italia presentation
• Experimental activities in Flex5Gware project (5G PPP)
• The path toward CRAN and vRAN (operator perspective)
• TIM proof-of-concept on RAN virtualization
• Conclusions and remarks
23IEEE 5G Summit (Berlin, November 2, 2016)
TIM proof-of-concept in Flex5Gware
Name of the PoC (in collaboration with UniPisa):
• Flexible resource allocation in CRAN/vRAN
platform eNB
UEVirtual
BaseBand pool
RRH
RRH
RRH
E-UTRAN
Features:• BBU pool allocation algorithms,• constrained RRH activation patterns,• energy-efficiency maximization, resource allocation,
robustness and reliability, using SotA optimizationtechniques to strike the best trade-offs betweenperformance and energy, scale vs. resources
Goal:
• design and evaluation of flexible SW
solutions in 5G networks for centralized
RAN environments, through
virtualization of BSs
Main ideas:
• vRAN/CRAN scenario
• PoC with phones/dongles
24IEEE 5G Summit (Berlin, November 2, 2016)
TIM proof-of-concept in Flex5Gware
USRP
USRPPC
Phone/dongle
Phone/dongle
USRPPhone/dongle
C-RAN/vRAN server used for the BBUs
allocation. The BBUs control the RRHs
(Micro and Macro). It contain also a
Coordinator and the Intelligent Programs
as developed in WP5.
• Macro cells sites are placed
considering an hexagonal grid
(assuming 3 sectors per site);
• Two Micro cells per Macro sector
The surrounding noise will be generated with
additional LTE node (acting as intercell
interference generator).Name of the PoC (in collaboration with UniPisa):
• Flexible resource allocation in CRAN/vRAN platform
25IEEE 5G Summit (Berlin, November 2, 2016)
TIM proof-of-concept in Flex5Gware
• Testbench defined.
HSS
Coordinator
EPC
(MME+GW)
OAI
eNodeB
OAI
eNodeB
OAI
eNodeB
ETHSwitch
Eth Cable
USB3.0 Cable
Implemented in WP5. Integration within the PoC in next months.
Target KPI Related Use Case(s) Comment
Energy Consumption (NRG)Dynamic Hotspots
50+ Mbps Everywhere
% of Energy saving in comparison with the solution
where all the hotspots are transmitting.
User data rate (UDR)Dynamic Hotspots
50+ Mbps Everywhere
User/cell edge Throughput (comparison with and without
CoMP technique).
Flexibility, versatility,
re-configurability (FVR)Dynamic Hotspots
50+ Mbps Everywhere
Time requested to adapt the system to a change of
network configuration (switch on/off of one or more cells
and reallocation of the resources).
First evaluations planned according to the target KPIs
26IEEE 5G Summit (Berlin, November 2, 2016)
TIM proof-of-concept in Flex5Gware
• Two main algorithms developed in WP5:
• Interference Coordination: Flexible CoMP/
Coordinated Scheduling (Global Scheduler)
• Power Efficiency: Flexible node activation/
deactivation (Global Power Manager)
• First simulation results with Coordination
show promising gains in terms of CQI,
and cell tput. Next results from January. Device
(Remote) Network Controller
Sensors / Actuators / Hardware
Dynamic FunctionalRe-composition
(DFR)
Monitoring Service
Performance-aware Resource
Management
Monitoringlibrary
Mo
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and
fle
xib
le
no
de
op
erat
ion
Mu
lti-
no
de
coo
rdin
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nIn
telli
gen
t p
rogr
ams
Radio Engine
Radio Program
Local Resource Controller
Radio Engine Manager
Monitoring Agent
Global Scheduler
Local Scheduler
Local Power Manager
Global Power Manager
Parameter Value
Carrier frequency 2 GHz
Bandwidth 10 MHz (50 RBs)
Path loss model ITU Urban Macro
Fading model Jakes
Macro eNB Tx Power 40 dB
Micro eNB Tx Power 26 dB
eNB antenna gain 18 dB
Noise figure 5 dB
Cable loss 2 dB
UE mobility model Stationary
UE traffic model CBR, 160 Kbps
27IEEE 5G Summit (Berlin, November 2, 2016)
Agenda
• Telecom Italia presentation
• Experimental activities in Flex5Gware project (5G PPP)
• The path toward CRAN and vRAN (operator perspective)
• TIM proof-of-concept on RAN virtualization
• Conclusions and remarks
28IEEE 5G Summit (Berlin, November 2, 2016)
Conclusions and remarks
• Flex5Gware project (5G PPP) is focused on implementation of key HW and SW
building blocks, targeting flexible, efficient and reconfigurable HW/SW platforms,
experimental activities and proof-of-concepts on 5G.
• Architecture evolution from operator perspective (starting from C-RAN toward
virtual RAN) should move toward a fully virtualized network, including the
addition of mobile edge computing technologies.
• TIM is realizing a proof-of-concept on vRAN in CRAN environment.
• Flex5Gware will show its PoCs during a final event
at the end of the project.
• Cross-project demonstrations will be hosted as
well as Flex5Gware PoCs during the final
demonstration event (Turin, June 2017).
• Telecom Italia will host the Flex5Gware demonstration activities, thanks to the presence of TILAB
facilities and TI Test Plant in Turin, as already done in the past for the EARTH project demonstrator.
Turin, 21-22 June 2017
GrazieThank you
Dario [email protected]