Transcript 3GPP LTE and SAE

Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
3GPP Long Term Evolution (LTE)
and System Architecture Evolution
(SAE)
Stephen Hayes
TSG SA Chairman
[email protected]
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
Introduction
• 3GPP Overview and Status
• Radio Evolution (LTE) Overview and
Status
• Network Evolution (SAE) Overview and
Status
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
What is 3GPP?
• 3GPP stands for 3rd Generation Partnership
Project
• It is a partnership of 6 regional SDOs
Japan
USA
• These SDOs take 3GPP specifications and
transpose them to regional standards
• ITU references the regional standards
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
Structure of 3GPP
Project Co-ordination Group
(PCG)
TSG GERAN
GSM EDGE
Radio Access Network
GERAN WG1
Radio Aspects
GERAN WG2
Protocol Aspects
GERAN WG3
Terminal Testing
TSG RAN
Radio Access Networks
RAN WG1
Radio Layer 1
specification
TSG CT
Core Network
& Terminals
SA WG1
CT WG1 (ex CN1)
Services
MM/CC/SM (lu)
Radio Layer2 spec &
Radio Layer3 RR spec
Architecture
SA WG2
CT WG3 (ex CN3)
RAN WG3
SA WG3
CT WG4 (ex CN4)
RAN WG4
SA WG4
CT WG5 (ex CN5)
RAN WG2
lub spec lur spec lu spec &
UTRAN O&M requirements
Radio Performance &
Protocol Aspects
RAN WG5 (ex T1)
Mobile Terminal
Conformance Testing
Nov 9-10, 2006
TSG SA
Services &
System Aspects
Security
Interworking with
External Networks
MAP/GTP/BCH/SS
Codec
OSA
Open Service Access
SA WG5
CT WG6 (ex T3)
Telecom Management
Brasilia, Brazil
Smart Card
Application Aspects
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
3GPP Release Timeline
WCDMA
HSDPA
HSUPA
HSPA+
MMS
IMS
MBMS
FBI
MSC
Split
Rel 99 Rel 4
1999 2000
Nov 9-10, 2006
I-WLAN
Rel 5
2001 2002
Rel 6
2003
2004 2005
Brasilia, Brazil
Rel 7 (target)
2006
2007
2008
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
3G Evolution
• Radio Side (LTE – Long Term Evolution)
– Improvements in spectral efficiency, user throughput,
latency
– Simplification of the radio network
– Efficient support of packet based services: MBMS, IMS,
etc.
• Network Side (SAE – System Architecture
Evolution)
–
–
–
–
Improvement in latency, capacity, throughput
Simplification of the core network
Optimization for IP traffic and services
Simplified support and handover to non-3GPP access
technologies
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
Evolution of 3GPP Radio Rates
Peak Network Data Rates
100000
kbits/sec
10000
1000
UL
DL
100
10
1
GPRS
EDGE
WCDMA
HSPA
HSPA+
LTE
Technology
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE (Long Term Evolution)
• LTE focus is on:
– enhancement of the Universal Terrestrial Radio Access
(UTRA)
– optimisation of the UTRAN architecture
• With HSPA (downlink and uplink), UTRA will remain highly
competitive for several years
• LTE project aims to ensure the continued competitiveness
of the 3GPP technologies for the future
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Requirements (1)
•
•
Reduced cost per bit
– Improve spectrum efficiency ( e.g. 2-4 x Rel6)
– Reduce cost of backhaul (transmission in UTRAN)
Increased service provisioning – more services at lower cost with
better user experience
• Focus on delivery of services utilising ”IP”
• Reduce setup time and round trip time
• Increase the support of QoS for the various types of
services (e.g. Voice over IP)
• Increase “cell edge bit rate” whilst maintaining same site
locations as deployed today
• Increase peak bit rate (e.g. above 100Mbps DL and above
50Mbps UL)
• Enhance the bit rate for MBMS (e.g. 1-3 Mbps)
•
Allow for reasonable terminal power consumption
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Requirements (2)
• Flexibility of use of existing and new frequency bands
• Allow to deploy in wider and smaller bandwidths than 5
MHz ( e.g. ranging from 1.25 to 20MHz)
• Allow variable duplex technology within bands as well as
between bands
• Non-contiguous spectrum allocations to one UE should not
be precluded
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Requirements (3)
• Architecture and Mobility
– Need to consider UTRAN Evolution and UTRA Evolution at the
same time aiming at simplifying the current architecture
– Shall provide open interfaces to support Multi-vendor
deployments
– Consider robustness – no single point of failure
– Support multi-RAT with resources controlled from the network
– Support of seamless mobility to legacy systems as well as to
other emerging systems including inter RAT Handovers and
Service based RAT Selection
– Maintain appropriate level of security
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Key agreements (1)
• 2 main issues have been investigated:
– The physical layer
– The access network internal architecture
• Physical layer
– Downlink based on OFDMA
• OFDMA offers improved spectral efficiency, capacity etc
– Uplink based on SC-FDMA
• SC-FDMA is technically similar to OFDMA but is better suited for
uplink from hand-held devices
• (battery power considerations)
– For both FDD and TDD modes
(User Equipment to support both)
• With Similar framing + an option for TD SCDMA
framing also
• Access Network consideration
– For the access network it was agreed to get rid of the RNC
which minimized the number of nodes
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Architecture
MME/UPE
MME/UPE
S1
Evolved
Packet
EPC
Core
E-UTRAN
X2
eNB
eNB
X2
X2
eNB
MME/UPE = Mobility Management Entity/User Plane Entity
eNB = eNodeB
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Key agreements (2)
• On the UTRAN Architecture the following working
assumptions were agreed in TSG RAN:
• RRC Terminates in the eNode B
• Outer ARQ terminates also in the eNode B
• Currently Ciphering and integrity for signaling is
inside the eNode B while Ciphering for the User
plane is in the AGW
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Key agreements (3)
• Requirements satisfaction
– The LTE concept has the potential to fulfil both the
system capacity and user throughput targets
– Evaluated uplink peak data rate is a bit smaller than the
requirements, however, it is expected that the peak data
rate can be increased by some optimisations, e.g. higher
TTI values and/or by reducing the amount of control
signalling information.
– It was confirmed that the requirements of C-plane and Uplane latency can be satisfied.
– Fulfilments without any issues are identified for
requirements on deployment scenarios, spectrum
flexibility, interworking, mobility, E-UTRAN architecture
and RRM.
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE Key agreements (4)
– Regarding system and device cost and complexity work
needs to continue in the future. As evolved UTRA and
UTRAN system will provide significantly higher data
rates than Release 6 WCDMA and, as a consequence
hereof, the physical layer complexity will increase
accordingly compared to lower-rate systems. This
complexity is not seen as evolved UTRA and UTRAN
specific, but is similar to the complexity experienced in
any high data rate system.
– According to these evaluation results, it can be
concluded that system concepts captured in this TR are
feasible for evolved UTRA and UTRAN.
– For Broadcast/Multicast services it is assume that
network synchronization will improve greatly the
performance
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
Time schedule for LTE
• LTE plan endorsed by 3GPP Project Co-ordination Group
• Initial studies and work-plan creation to was almost
completed in June 2006:
– Generic Work Item created during the June meeting of TSG
RAN
• LTE Workplan created in September 2006
• Completion foreseen in 2008
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Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
SAE (System Architecture
Evolution)
• To ensure competitiveness of 3GPP systems for the next 10
years and beyond
• Optimization of the network for IP traffic and its expected
growth
• Performance improvements
– reduced latency,
– higher user data rates,
– improved system capacity and coverage, and reduced overall
cost for the operator.
– Potential network and traffic cost reduction
• Flexible accommodation and deployment of existing and
new access technologies with mobility by a common IPbased network
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
3GPP SAE – status
• Large number of active companies (30+)
• Reasonable progress on 3GPP parts (including LTE support)
• As of October 2006, SA has given a directive to SA2 to ensure
that LTE 3GPP access aspects can meet the time line required by
3GPP RAN
• Some Key areas being addressed – agreements remaining
–
–
–
–
–
–
MME-UPE split or merged
3GPP anchor-SAE anchor split or merged
Interconnection/mobility for non-3GPP access technologies
Roaming aspects
PCC architecture & QoS model
Simultaneous access to multiple data networks
• Timeline
– Report to be ready for SA plenary approval Dec 2006
– Majority of Specifications to be ready end 2007/early 2008
– First deployments planned for 2009
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
LTE/SAE time plan
SA have drafted an overall SAE/LTE work plan to align the time
schedules of all applicable Working Groups
2006
#33
2007
#34
#35
#36
#37
2008
#38
#39
Study Item
Stage 1 Work Item
Stage 2 Work Items
LTE parts
Non-LTE
Stage 3 Work Items
LTE parts
Non-LTE parts
Nov 9-10, 2006
Brasilia, Brazil
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Workshop on ICT Technologies & Standards for NGN, 3G, and FMC
Summary
• Extensive work ongoing to ensure future competiveness of
3G systems
–
–
–
–
–
Improved performance
Simplified architecture
Optimized for IP traffic and services
Support for non-3GPP access technologies
Completion targeted in 2008
• Study phase completing, specification phase starting
• Further information at 3GPP web site (www.3gpp.org)
– LTE requirements study: 25.913
– LTE architecture study: 25.912
– SAE architecture study: 23.882
Nov 9-10, 2006
Brasilia, Brazil
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