open-air-interface based measurement methodology for...
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© Fraunhofer IIS
OPEN-AIR-INTERFACE BASED MEASUREMENT METHODOLOGY FOR THE E-MBMS CHARACTERIZATION IN LTE-A NETWORKS
2016 Tyrrhenian International Workshop on Digital Communications (TIW16)
13.09.2016, Livorno, Italy
©Fraunhofer IIS/Kurt Fuchs
Dr. Javier Morgade
Senior Engineer, Broadband and Broadcast Department Fraunhofer Institute for Integrated Circuits (IIS), Erlangen
© Fraunhofer IIS 2
Open-air-interface based measurement methodology for the eBMSM service characterization in LTE-A Networks
Outline
Motivation
IMB5 Project
eMBMS Testbeds
UE side OpenAirInterface – eMBMS
Video Demo: Fraunhofer IIS LTE-A Testbed
Summary and Outlook
© Fraunhofer IIS 3
Motivation Broadcast / Multicast Services in 5G
5G:
Will become a worldwide standard
High performance networks and smartphones / tablets
Efficient Audio/video coding
Millions of potential Broadcast and interactive receivers
eMBMS:
Evolved Multimedia Broadcast Multicast Service (3GPP)
IMB5 Project:
Built-up two eMBMS trials networks for terrestrial TV distribution in MBSFN mode
Investigate system optimizations
Proposals for 3GPP standardization
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IMB5 Project Facts “Integration of LTE Broadcast in 5G”
© Olivier Le Moal – Fotolia.com
Partner Role
Coordinator, demo center, trials, standardization, coverage planning
Erlangen network, trials, UE SDR development, standardization, simulations
eNodeB, network technologies, standardization, coverage planning
UE SDR development
Measurement equipment
Application scenarios
Testbed sites, fiber connection, Test drives
Co-funded by
Duration 04/2014 – 05/2016
© Fraunhofer IIS 5
eMBMS Testbed Infrastructure (1) Open large scale Erlangen Installation (Fraunhofer IIS LTE-A)
© Olivier Le Moal – Fotolia.com Erlangen and vicinity,
RAN
Erlangen-Tennenlohe, eMBMS subsystem
ePC, Erlangen-Tennenlohe
S1GEth
fiber(s)
fiber(s)
Tennenlohe Turm50m
Stadtwerketurm135m
Macro2eNB (3
sectors)
Macro1eNB (3
sectors)
X2
S1Microwave
link(~150 Mbps avail for LTE)
S1-U
MME
S-GW P-GW
HSS
S5
PCRF
S6a
PDN
SGi
S1-MME
MBMS-GW
BM-SC
Sm
M1
M3
SGi-mb
SGmbContent Provider
SGi
MCEM2
GPS
GPS
Gx
S11
Rx
Two eNodeB, 3 sectors each
MBSFN operation
LTE Band 17 (700 MHz, 5 MHz BW)
600 W EIRP
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eMBMS Testbed Infrastructure (2) Large scale Munich Installation
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Single eNodeB, 4 RRH (MBSFN)
LTE Band 28 (700 MHz, 10 MHz BW)
400 W EIRP
© Fraunhofer IIS 7
User Equipment (UE) Platforms (1) Based on Commercial Equipment
Established Equipment:
R&S TSMW single antenna RF scanner with ROMES drive test tool
Qualcomm Mobile Test Platform (=> Smartphone for experimentation)
Samsung S5, enabled for eMBMS (Korean version)
Drawback:
Limited to current eMBMS waveform and LTE chips
No experimentation of future waveform extensions possible
© Fraunhofer IIS 8
User Equipment (UE) Platforms (2) Software Defined Radio (SDR) Platforms Two SDR Platforms tested in IMB5:
National Instruments PXI Platform
OpenAirInterface LTE SW Stack
UE-side generic eMBMS implementation
UE-side de-scheduler MAC, RLC, RRC
Why OpenAirInterface ?
Common PC processor architectures
Rapid prototyping (plain C)
“Cheap” Compatible Frontends (RF HW)
Access to all Layer 1..3 stack!
Experimentation with
LTE waveform extensions (e.g. eMBMS)
Flexible antenna configurations
© Fraunhofer IIS 9
User Equipment (UE) Platforms (3) UE side OpeAirInterface - eMBMS
Fraunhofer IIS Contributions
Service Orchestrator (Multicast IP Forwarding)
FLUTE (File Delivery) MAD*
RTP (Real-time Transport Protocol) VLC
LTE-RLC/RRC
LTE-MAC
Generic MCH scheduler
MCH: MCCH, MTCH
LTE-PHY
PBCH, PDCCH, PDSCH
SIB1,SIB2,SIB3, SIB13
PMCH
(*) MAD Project's Home Page http://mad.cs.tut.fi/
© Fraunhofer IIS 10
Fraunhofer IIS LTE-A Testbed Erlangen (1) Fraunhofer IIS LTE-A Network + UE side OAI eMBMS
IMB5 more details paper @ EuCNC 2016
Trials show: Coverage can be improved by waveform extensions, e.g. longer cyclic prefix current 3GPP Work Item
Fraunhofer IIS LTE-A eMBMS Testbed OpenAirInterface - UE
Real-Time Transport Protocol (RTP) OAI + VLC
File Delivery over Unidirectional Transport (FLUTE)
OAI + MAD (*)
eMBMS MCS class (QCI) OAI Generic MCH scheduler
RRC Connection + USIM Fhg IIS testbed integrated
Non-Access Stratum (NAS) Integration tasks ongoing
(*) MAD Project's Home Page http://mad.cs.tut.fi/
© Fraunhofer IIS 11
Fraunhofer IIS LTE-A Testbed Erlangen (2) Fraunhofer IIS LTE-A Network + UE side OAI eMBMS
OpenAirInterface now includes eMBMS in the UE; interoperability with commercial Nokia eNodeBs and Athonet ePC Video Demo
© Fraunhofer IIS 12
Summary and Outlook Summary:
Two eMBMS testbed infrastructures established (Erlangen, Munich)
Trials were used to prove the coverage planning
eMBMS waveform extensions are required, especially longer CP
OpenAirInterface + eMBMS in the UE; interoperability with commercial Nokia eNodeBs and Athonet ePC
Outlook:
Other potential improvements of eMBMS reception to be investigated
MIMO, physical layer (IQ) time interleaving
Effect of MRC with different antenna configurations
3GPP Activities
LTE Work Item „eMBMS Enhancements“ (WID: RP-160675): Longer cyclic prefix, 100% for Broadcast, Study on standalone operations
New Radio (NR) Scenarios and Requirements (TR 38.913): „MBMS Services“ (text proposal in RP-161242, not yet agreed)
© Fraunhofer IIS 13
Open-air-interface based measurement methodology for the eMBMS characterization in LTE-A Networks
Dr. Javier Morgade
Senior Engineer, Broadband and Broadcast Department
Tel.: +49 9131 776-6334
E-Mail: [email protected]
Internet: www.iis.fraunhofer.de
© Anton Balazh 2012 - Fotolia.com ©Fraunhofer IIS/Kurt Fuchs
Contact
© Fraunhofer IIS 14
Extra Slides: Experimentation Results (1) Scope
Goals of experimentation in trials networks – IMB5:
Few literature available on eMBMS measurements
Identify potential improvements of eMBMS waveform beyond Rel-13.
Verification of eMBMS coverage planning of MBSFN’s by comparison with measurement results
Investigation on performance of future waveform extensions (mainly CP)
© Olivier Le Moal – Fotolia.com
© Fraunhofer IIS 15
Extra Slides: Experimentation Results (2) Verification of coverage planning with measurement results
SINR for Munich test route (55 km):
Simulated for CP of 16.7 us (yellow), 33.3 us (green) and 66.7 us (red)
Good agreement of simulation with measurements (blue) of transmitted signals (CP 16.7 us)