3GPP LTE Standards Update
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Transcript of 3GPP LTE Standards Update
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 1
3GPP LTE Standards Update
Issam Toufik
Technical Officer, 3GPP RAN4
Mobile Competence Centre
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 2 2
Outline
Short introduction to 3GPP
LTE, the UMTS Long Term Evolution, Rel-8 and Rel-9
LTE-Advanced, Rel-10
Further Enhancements for LTE-Advanced, Rel-11 and beyond
Conclusions
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 3
The Role of 3GPP
Maintenance and evolution of Radio Technologies:
GSM, GPRS, W-CDMA, UMTS, EDGE, HSPA and LTE
Maintenance and evolution of the related Core Network and Systems Architecture
Partnership Consists of
• Regional standards organizations
(Asia, Europe & North America):
• Market partners representing the broader industry: NGN Forum (IMS Forum), TD-Forum, GSA,
GSMA, IPv6 Forum, UMTS Forum, 4G Americas, TD-SCDMA Industry Alliance, ICU, Femto Forum,
CDG, COAI, NGMN Alliance
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 4
LTE, the UMTS Long Term Evolution Rel-8, Rel-9
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 5
Core Network Evolution
Node B
RNC
SGSN
GGSN
MSC
PSTN
eNode B
S-GW
P-GW
Operator’s IP Services
(e.g., IMS, PSS etc)
‘01
‘11
‘03 ‘07 ‘05
‘09
‘99
‘13
Circuit/GPRS Core Network
Evolved Packet Core Network
MME
Operator’s IP Services
(e.g., IMS, PSS etc)
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 6
LTE Release 8 Key Features
High spectral efficiency • OFDM in Downlink
• Robust against multipath interference • High affinity to advanced techniques
– Frequency domain channel-dependent scheduling – MIMO
• DFTS-OFDM(“Single-Carrier FDMA”) in Uplink • Low PAPR • User orthogonality in frequency domain
• Multi-antenna application
Very low latency • Short setup time & Short transfer delay • Short HO latency and interruption time
• Short TTI • RRC procedure • Simple RRC states
Support of variable bandwidth • 1.4, 3, 5, 10, 15 and 20 MHz
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 7
Release 9 LTE Features
Small enhancements from LTE Release 8 mainly for higher layer • HeNB (Home eNode B)
• HeNB Access Mode – Rel-8: Closed Access Mode – Rel-9: Open and Hybrid Mode
• HeNB Mobility between HeNB and macro – Rel-8: Out-bound HO – Rel-9: in-bound and inter-CSG HO
• SON (self-organizing networks) • Rel-8: Self configuration, Basic self-optimization • Rel-9: RACH optimization, etc
• MBMS (Multimedia Broadcast Multicast Service) • Rel-8: Radio physical layer specs • Rel-9: Radio higher layer and NW interface specs
• LCS (Location Services) • Rel-8: U-Plane solutions • Rel-9: C-Plane solutions, e.g. OTDOA
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 8
LTE-Advanced Rel-10 and beyond
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 9
1999
Release 99
Release 4
Release 5
Release 6
1.28Mcps TDD
HSDPA
W-CDMA
HSUPA, MBMS
Release 7 HSPA+ (MIMO, HOM etc.)
Release 8 LTE
Release 9
Release 10
LTE enhancements
Release 11+
ITU-R M.1457 IMT-2000 Recommendation
ITU-R M.[IMT.RSPEC] IMT-Advanced Recommendation
Motivation for LTE-Advanced
LTE-Advanced
2011
3GPP aligned to ITU-R IMT process
Allows Coordinated approach to WRC: Additional IMT spectrum band identified in
WRC07
3GPP Releases evolve to meet:
• Future Requirements for IMT
• Future operator and end-user requirements
Further LTE enhancements
3 Gbps
64QAM
8x8 MIMO 100MHz BW
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 10
Future requirements
• Significant increase in data Traffic
•Driven by Video
•Spread of smart-phones
• New applications and traffic patterns
•Traffic is no longer dominated
by traditional voice services
• Requirement for data rates
comparable to the fixed internet
• Diverse QoS
• Energy Saving
• Economical reasons
• Ecological concerns
• Backward compatibility
Market Trends
• Very high network capacity
•With a reduced cost per bit
• High Spectral efficiency
• Improved user experience
• Low latency
• Fairness of user throughput
• Cell edge vs cell center
• Urban vs rural
• Users: Less system impact
from heavy users
• Low CAPEX and OPEX
• Energy saving
• Self Optimization
Technology requirements
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 11
Evolution directions
Current
capacity
Required Network Capacity
Spectrum Efficiency Techniques to increase
the bits/Hz/s
Bandwidth extension depends on the future
allocations and UE capabilities
Traffic offloading offloading of the traffic
away from the Evolved
Packet Core network
Network density - Heterogeneous deployments
- architectures to reduce the
cost per bit are required
Conventional approach
for capacity improvement
Emerging solutions
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 12
Key Requirements for LTE-Advanced
LTE-Advanced shall be deployed as an evolution of LTE Release 8 and on new bands. LTE-Advanced shall be backwards compatible with LTE Release 8
Smooth and flexible system migration from Rel-8 LTE to LTE-Advanced
LTE Rel-8 cell
LTE Rel-8 terminal LTE-Advanced terminal
LTE-Advanced cell
LTE Rel-8 terminal LTE-Advanced terminal
LTE-Advanced backward compatibility with LTE Rel-8
An LTE-Advanced terminal can work in an LTE Rel-8 cell
An LTE Rel-8 terminal can work in an LTE-Advanced cell
LTE-Advanced contains all features of LTE Rel-8&9 and additional features for further
evolution
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 13
Key Features in LTE Release 10
Support of Wider Bandwidth(Carrier Aggregation) • Use of multiple component carriers (CC) to extend bandwidth up to 100 MHz • Common physical layer parameters between component carrier and LTE Rel-8 carrier Improvement of peak data rate, backward compatibility with LTE Rel-8
Advanced MIMO techniques • Extension to up to 8-layer transmission in downlink • Introduction of single-user MIMO up to 4-layer transmission in uplink • Enhancements of multi-user MIMO Improvement of peak data rate and capacity
Heterogeneous network and eICIC (enhanced Inter-Cell Interference Coordination)
• Interference coordination for overlaid deployment of cells with different Tx power Improvement of cell-edge throughput and coverage
Relay • Type 1 relay supports radio backhaul and creates a separate cell and appear as Rel. 8 LTE eNB to
Rel. 8 LTE UEs Improvement of coverage and flexibility of service area extension
100 MHz
f
CC
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 14
Coordinated Multi-Point transmission and reception (CoMP)
• Support of multi-cell transmission and reception
• Improvement of cell-edge throughput and coverage
• Technical Topics: • Deployment scenarios
• UE feedback enhancement
• Control signaling and measurement procedures
• UL sounding enhancements
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 15
Multi-user MIMO
DL transmissions in the latest releases of LTE utilize precoded reference signals.
Still a significant gap between the theoretical promises of MU-MIMO and practice
Lack of accuracy of the CSIT.
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 16
Relays
Coverage extension (including filling coverageholes)
Capacity boosting:
• network coding: complex and dependent on high channel estimation accuracy
• Issues related to interference generated by the nodes
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 17
Other Topics in rel-11 and to come …
Relays - part 2: Mobile relays, flow control, …
Minimization of Drive Test (MDT) enhancements
Network Energy Saving for E-UTRAN
MBMS enhancements: Service continuity aspects
SON enhancements: LTE-A/HeNB specific aspects
Network-Based Positioning Support in LTE
Further Enhanced Non CA-based ICIC for LTE
LTE RAN Enhancements for Diverse Data Applications
CA enhancements
…
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 18
Implementation Advances
Not all enhancements to LTE-Advanced will require changes to the system specifications
Implementation advances are also to be expected: • Channel estimation, Interference cancellation, …
UE side: tighter requirements to identify superior UEs
Network side: centralized processing, enhanced algorithms for scheduling and coordination between cells and between transmission/reception points. • Will not be standardized, but will have a major impact on
the performance and reliability offered by the LTE-Advanced networks of the future.
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 19
Spectrum Explosion in 3GPP Recently standardized (Sep. 2011)
• UMTS/LTE 3500MHz
• Extending 850 MHz Upper Band (814 – 849 MHz)
Spectrum to be standardized by Sep. 2012
• LTE-Advanced Carrier Aggregation of Band 3 and Band 7
• LTE Advanced Carrier Aggregation of Band 4 and Band 17
• LTE Advanced Carrier Aggregation of Band 4 and Band 13
• LTE Advanced Carrier Aggregation of Band 4 and Band 12
• LTE Advanced Carrier Aggregation of Band 5 and Band 12
• LTE Advanced Carrier Aggregation of Band 20 and Band 7
• LTE Advanced Carrier Aggregation Band 2 and Band 17
• LTE Advanced Carrier Aggregation Band 4 and Band 5
• LTE Advanced Carrier Aggregation Band 5 and Band 17
• LTE Advanced Carrier Aggregation of Band 1 and Band 18
• LTE Advanced Carrier Aggregation of Band 1 and Band 19
• LTE Advanced Carrier Aggregation of Band 1 and Band 21
• LTE Advanced Carrier Aggregation in Band 41
• LTE Advanced Carrier Aggregation in Band 38
• LTE Downlink FDD 716-728MHz
• LTE E850 - Lower Band for Region 2 (non-US)
• LTE for 700 MHz digital dividend
• Study on Extending 850MHz
• Study on Interference analysis between 800~900 MHz bands
• Study on UMTS/LTE in 900 MHz band
E-UTRA operating bands in 3GPP TS 36.101
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 20
Release 12 onward
A 2 days 3GPP workshop will take place:
• 11 - 12 Jun 2012, Ljubljana
Scope: investigate what are the main changes that could be brought forward to evolve RAN toward Release 12 and onward:
• Requirements
• Potential technologies
• Technology roadmap for Releases 12, 13 and after
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 21
Prospects
3GPP systems approach ensures evolution to meet new service requirements
Industrial input to 3GPP solid and growing
LTE and LTE-Advanced are not the end, 3GPP is now studying future networks
LTE is an evolution path for non 3GPP systems, providing future path for full coverage
THE Mobile Broadband Standard
© 3GPP 2012 LTE MENA 2012, Dubai, 29th-30th April 2012 22
Thank You
www.3gpp.org
More Information about 3GPP: