rohde & schwarz technology day 2016 - singapore · pdf filetechnology day 2016 – the...
TRANSCRIPT
3/6/2016
1
Footer: >Insert >Header & Footer 1
Technology Day 2016 – The Road to 5G1 June 2016 ❙ Singapore
Willkommen ❙Welcome
Technology Day 2016 – The Road to 5G
Create Value for LTE Optimization
Koh Kwang Meng
Market Segment Manager for Mobile Devices
ROHDE & SCHWARZ GmbH & Co. KGTest and Measurement Division
3/6/2016
2
2013/20142009/2010
Technology evolution path
GSM/GPRS
EDGE, 200 kHzDL: 473 kbpsUL: 473 kbps
EDGEevoDL: 1.9 MbpsUL: 947 kbps
HSDPA, 5 MHzDL: 14.4 MbpsUL: 2.0 Mbps
HSPA, 5 MHzDL: 14.4 MbpsUL: 5.76 Mbps
HSPA+, R7DL: 28.0 MbpsUL: 11.5 Mbps
2005/2006 2007/2008 2011/2012
HSPA+, R8DL: 42.0 MbpsUL: 11.5 Mbps
cdma2000
1xEV-DO, Rev. 0 1.25 MHzDL: 2.4 MbpsUL: 153 kbps
1xEV-DO, Rev. A 1.25 MHzDL: 3.1 MbpsUL: 1.8 Mbps
1xEV-DO, Rev. B 5.0 MHzDL: 14.7 MbpsUL: 4.9 Mbps
HSPA+, R9DL: 84 MbpsUL: 23 Mbps
DO-AdvancedDL: 32 Mbps and beyondUL: 12.4 Mbps and beyond
LTE-Advanced R10DL: 1 Gbps (low mobility)UL: 500 Mbps
Fixed WiMAXscalable bandwidth1.25 … 28 MHztypical up to 15 Mbps
Mobile WiMAX, 802.16eUp to 20 MHz DL: 75 Mbps (2x2)UL: 28 Mbps (1x2)
Advanced MobileWiMAX, 802.16mDL: up to 1 Gbps (low mobility)UL: up to 100 Mbps
VAMOSDouble SpeechCapacity
HSPA+, R10DL: 84 MbpsUL: 23 Mbps
LTE (4x4), R8+R9, 20MHzDL: 300 MbpsUL: 75 Mbps
UMTSDL: 2.0 MbpsUL: 2.0 Mbps
Source of data: GSA’s Evolution to LTE report: 9 April 2015
LTE Today
ı 393 commercially launched networksin 138 countries� 2 in 2009� 14 in 2010� 30 in 2011� 100 in 2012� 118 in 2013� 100 in 2014
ı 460 networks estimated by E2015
ı 497 million LTE subscribers by Q4/14
4
3/6/2016
3
LTE/LTE-Advanced Feature Review3GPP Release 8 - 11
ı VoLTE, eMBMS become commercial reality
ı CA is THE priority feature within LTE-A
ı eICIC / feICIC is important
ı Low demand for enhanced SC-FDMA and
Uplink MIMO
ı Downlink MIMO schemes:� For FDD the main deployment is still 2x2 with
many operators evolving to 4x2 and some
activities aiming at 4x4 implementation;
LTE TDD requires 8x2 MIMO schemes (DL)
ı Limited Rel11 market demands� CoMP (mainly UL), E-PDCCH, in-device coexistence
5
ı Two or more component carriers are aggregated in LTE-Advanced in order to support wider bandwidths up to 100 MHz.� Support for contiguous and non-
contiguous component carrier aggregation (intra-band) and inter-band carrier aggregation.
� Different bandwidths per component carrier (CC) are possible.
� Each CC limited to a max. of 110 RB using the 3GPP Rel-8 numerology (max. 5 carriers, 20 MHz each).
ı Motivation.� Higher peak data rates to meet
IMT-Advanced requirements.� NW operators: spectrum aggregation, enabling Heterogonous Networks.
Carrier aggregation (CA)General comments
Frequency band A Frequency band B
Frequency band A Frequency band B
Frequency band A Frequency band B
Intra-band contiguous
Intra-band non-contiguous
Inter-band
Component Carrier (CC)
2012 © by Rohde&Schwarz
3/6/2016
4
7
LTE-Advanced Rel12Release 12 Building Blocks
� Joint FDD-TDD Operation� Network-Assisted Interference Cancellation� Further Enhancements to LTE TDD for DL-UL Interference Management and Traffic Adaptation� Coverage Enhancements� …
M2M / MTCSupport for low
cost devices
WiFi offloadingSelective traffic
offload
Small Cell enhancementsincl. dual layer connectivity (macro/pico) and 256QAM
D2DProximity service
detection and communication
Additionally:
Small Cell EnhancementsDesign Goals and Scenarios
ı In today’s 3G/4G networks heterogeneous network deployments are widely applied. They may include scenarios with small cells deployed within a macro umbrella cell.
ı The following design goals for better supporting small cells were addressed:� Improve mobility
robustness� Reduce signaling load � Enhance per-user
throughput
ı Two main solutions� 256QAM� Dual connectivity
8
3/6/2016
5
Small Cell Enhancements256QAM Modulation
ı Simulation analysis showed throughput gains ranging from 0 – 13% in scenarios 2a/b and 7 - 30% in scenario 3
ı A new MCS Index table has been added and higher layer signaling is used to inform the UE whether to apply the “old” or the “new” table (MCS index 20 up to 27 use 256QAM in the new table)
ı Likewise the CQI reporting from the user device distinguishes between use of QPSK/16QAM/64QAM only or the additional use of 256QAM (see tables on the right)
9
„old“ CQI table „new“ CQI table
Small Cell EnhancementsDual Connectivity (DC) - Basics
ı The UE consumes radio resources from at least two different NW points (connected with non-ideal backhaul).
ı Only for scenario 2 (slide 5) DC gainsjustify implementation. 3GPP does notrestrict operation to scenario 2,however UE performance requirements(RAN4) are based on this scenario only.
ı In DC a UE is connected to oneMeNB and one SeNB, i.e. the UEoperates two MAC/RLC entities foreach data flow on each of the MeNB and SeNB.
10
3/6/2016
6
Small Cell EnhancementsDual Connectivity (DC) - Basics
ı Each involved eNB may assume two different roles� Master eNB� Secondary eNB� Roles can vary among UEs
ı In DC, the radio protocol architecturethat a particular bearer uses dependson how the bearer is setup. Threealternatives exist, MCG bearer,SCG bearer and split bearer.
ı In the downlink, for the split bearer casethe decision whether to route a packetvia MeNB or the SeNB is done in the MeNB.
11
D2D communicationScenarios and Basics
ı LTE Device-to-Device (D2D) Proximity Services (ProSe)� The objective is to allow devices in close proximity to detect each other and to communicate directly with each other
with the goal to reduce the network load, increase capacity in a given bandwidth and allow communication in areas without network coverage. The later applies only to the public safety use case, where the first two are also interesting for commercial consumer applications.
ı Basic scheme:� D2D for FDD and TDD� D2D on the same or on different LTE
carrier(s) than Wide Area Network (WAN)� Use UL frequencies / time slots, SC-FDMA� Multiplexing of WAN and D2D to a certain
extend supported, exceptions apply forUEs with a single TX chain and / or UL CA
� No (HARQ) feedback on PHY(broadcast mode)
12
3/6/2016
7
D2D CommunicationNew transport and physical channels for Sidelink
ı Sidelink: New notation for LTE D2D ProSe when referring to D2D/ProSe’s PC5 interface
13
14
1MA232 White Paper 1MA252 White Paper
3/6/2016
8
LTE-Advanced Rel12Feature Review
ı Strong emphasis on small cell / heterogeneous network deployments with significant improvements (256QAM and DC)
ı FDD/TDD CA already commercialized
ı High interest in MTC enhancements
ı D2D provides fundamentally enhanced functionality
15
LTE-Advanced – Release 13 OutlookSome work started
16
ı A new Study Item on “V2x” will particularly consider the usefulness of new LTE features to the automotive industry - including Proximity Service (ProSe) and LTE-based broadcast services such as Public Warning Systems (PWS) and eMBMS.
LTE in unlicensed spectrum (aka LAA)
CA enhancements
Elevation Beamforming / Full-Dimension MIMO
MTC enhancements
D2D enhancements
Single-cell Point-to-Multipoint (SC-PTM)
Enhanced multi-user
transmission techniques
Indoor positioning
3/6/2016
9
Important step (2018-2020) towards commercial 5G (≥ 2020)Combinations of Rel12/13 features + advanced antennas + increased BW @ below 6GHz
17
LTE/LTE-A(700 MHz - 2.5GHz)
SeNB in licensed or unlicensedband, using carrier aggregation
Small Cell3.5 GHz / ~ 5GHz
MeNB in licensed bandusing carrier aggregation
ı The below architecture is prepared to addresses future mobile broadband requirementsı LTE/LTE-A provides the controlling layer and specific enhanced requirements are solved by “adding” –
in this case adding small cell peak data rate / capacity using the carrier aggregation feature
R&S Internet Information
18
