Evolution of the 3GPP Network Architecture,
Transcript of Evolution of the 3GPP Network Architecture,
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 1
Evolution of the 3GPP Network
Architecture,(the Evolved Packet Core)
Dr. Sungho Choi
Vice Chairman of 3GPP TSG SA
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Air Interface Technology Evolution
‘02
‘12
‘04‘08‘06
‘10
‘00
2M/768K
14M/768K
14M/5.7M
28M/11.5M
42M/5.7M
84M/23M
300M/75M
2M/768K
Rel. 8 & 9LTE
Rel. 99WCDMA
Rel. 4TD-SCDMA
Rel. 5HSDPA
Rel. 6HSUPA
Rel. 7HSPA+
Rel. 8HSPA+
Rel. 9HSPA+
Peak Data Rate (bps)DL/UL
WCDMA
OFDMA
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Network Architecture Evolution
Node B
RNC
SGSN
GGSN
MSC
Operator’sIP Services
(e.g., IMS, PSS etc)
PSTN
eNode B
S-GW
P-GW
Operator’sIP Services
(e.g., IMS, PSS etc)
‘01
‘11
‘03‘07‘05
‘09
‘99
‘13
Circuit/GPRS Core Network
Evolved Packet Core Network
Control Plane delay : 100msUser Plane delay : 5ms
MME
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
3GPP Organization structure
Project Coordination Group
TSG RANRadio Access N/W
RAN1Radio Layer 1
RAN2
Radio Layer2/3
RAN3
Access I/F
RAN4
Radio Performance
RAN5
Conformance Test
TSG SASystem Architecture
SA1Services
SA2
Architecture/Stage2
SA3
Security
SA4
Codec
SA5
O&M, Charing
TSG CTCore
Network&Terminal
CT1
NAS (UE-MME I/f)
CT3
Network I/F to out
CT4
Network I/F in 3GPP
CT6
UICC I/F
Smart Card Appl.
TSG GERANGSM/EDGE RAN
GERAN1
PHY
GERAN2
Layer2/3, Access I/F
GERAN3
Conformance Test
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Key LTE/SAE Features
Rel.8 LTE (~09/03)
• 20MHz, OFDM New Air
• DL 4x4 MIMO
• SON, HeNB
• SAE For LTE Access
• CS Fallback in EPS
• Single Radio VCC
• Peak: DL 300Mbps,
UL 75Mbps
Rel.9 LTE (~10/03)
• Enhanced Dual-Layer Tx
• SON/HeNB Enhancement
• IMS Emergency Calls
• LCS for LTE and EPS
• MBMS support in EPS
• Peak: DL 300Mbps,
UL 75Mbps
SON: Self Organizing Network, HeNB: Home eNB, SAE: System Architecture Evolution
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 6
Evolved Packet Systemarchitecture
hPCRF
HSS
SWn
Operator's IP Services
(e.g. IMS, PSS etc.)
Trusted Non - 3GPP IP
Access SWa
HPLMN
SWd
Non - 3GPP Networks
VPLMN
vPCRF
ePDG
SWm
Untrusted Non - 3GPP IP
Access STa
3GPP AAA Server
S2c
S2c
S9
SGi
Gx
Rx
S6 b
UE
3GPP AAA Proxy
SWx
Gxa
Gxb
Gxc
S8
S6a
S2c
3GPP Access
Serving Gateway
PDN Gateway
Many 3GPP access technologiesMobility between access technologiesMultiple roaming modelsNon-3GPP accesses
LTE
WIMAX
GSM1900EDGE
GSM1800
GSM450GSM900
UTRAN
UTRAN
HSPA
UTRAN HSPA+
LTE
HRPD
1xRTT 802.16
LTELTE1800
LTE2600
WLAN3GPP2
GERAN
UTRAN
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
CS Fallback in EPS
eNB
MME
HSS
UE
Serving Gateway
PDNGateway
PCRF
RNC
MSC
Node B
GMSC
Operators’ IP Services
Application of CSFB:• CS capable device camping on LTE
cell can establish/receive CS services
• Reuse of existing CS infrastructure for voice service until IMS VoIP is deployed
• Provide voice roaming support with LTE
• Can support emergency calls using existing CS infrastructure
SMS can be delivered to the UE
without redirecting to CS Domain
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Single Radio Voice Call Continuity
eNB
MME
HSS
UE
Serving Gateway
PDNGateway
RNC
MSC Server
Node B
P-CSCF
S-CSCFSCC AS
UE
UE
MGW
UE
IMS
SRVCC use case:• IMS call initiated in LTE can continue
in CS domain after moving outside of LTE coverage area
• SR-VCC is invoked if no other VoIP capable PS system (HSPA/eHRPD) is available for VoIP PS-PS HO
• Requires overlapping with GSM/WCDMA/1xRTT coverage
SRVCC improvements:• Mid-call services (like HOLD & MPTY)
• emergency calls
• video calls
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
3GPP Schedule2009 2010 2011 2012 2013
2H 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 3Q 4Q
Rel.8
Rel.9
Rel.10
Rel.11
Stage 3 ASN.1 Freeze
’10/03’09/12
ASN.1 Freeze
’11/06’11/03
Stage 1
’10/03
Test spec
ASN.1 Freeze
’12/09’12/03’11/09 ’12/12
’10/09
Stage 2 Stage 3 Test spec
Stage 1 Stage 2 Stage 3
First LTE launch (09/12)
Rel.8 Commercialization
Test spec
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Key Rel.10/Rel.11 Features
Rel.8 LTE (~09/03)
• 20MHz, OFDM New Air
• DL 4x4 MIMO/ UL 1x2 MIMO
• SON, HeNB
• SAE For LTE Access
• CS Fallback in EPS
• Single Radio VCC
• Peak: DL 300Mbps, UL 75Mbps
Rel.11 (~12/12)
Rel.9 LTE (~10/03)
• Enhanced Dual-Layer Tx
• SON/HeNB Enhancement
• IMS Emergency Calls
• LCS for LTE and EPS
• MBMS support in EPS
• Peak: DL 300Mbps, UL 75Mbps
Rel.10 LTE-Adv (~11/06)
• DL 8x8 MIMO, UL 4x4 MIMO
• Carrier Aggregation
• HetNet, MDT
• HeNB Local IP Access
• Wifi offloading
• Machine Type Communication
• Peak: DL 1Gbps, UL 500 Mbps
• CoMP
• Enhancement of Rel.10 features
• System Improvement of MTC
• Service Awareness and Privacy Policies
• IW MNO and Application Provider
• Data Application Impacts
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 11
Local IP Access (LIPA)
scope of Local IP access
logical connection for mobile
operator IP traffic
Residential/
enterprise
IP Network
Mobile
operator’s
core
network
UE
Local IP traffic
IP traffic to mobile operator’s CN
All traffic
on 3GPP
radio
LIPA is primarily for end user’s benefit, to allow access to local residential or corporate network through a 3GPP device
LIPA provides access for IP capable UEs that are connected via a H(e)NB subsystem to other IP capable entities in the same residential/ enterprise IP network.
Simultaneous access from a UE to the mobile operator’s core network and Local IP Access to a residential/enterprise IP network will be supported.
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© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011 12
WLAN Offloading
WLAN offloading refers to the dual radio scenario where part of the traffic is routed via WLAN access and part via 3GPP access
WLAN offloading covers both the scenario where the traffic via WLAN radio is anchored in the EPC (i.e., seamless offloading) and the scenario where it is not anchored (i.e., non-seamless offloading)
Access Network Discovery and Selection Function (ANDSF) is there to provide the UE with the access network discovery information and the policy on how to use the available access networks
• Available access networks
• Preferred routing of the traffic per APN, per IP flow
WLAN 3GPP
RAT
EPCANDSF
UE
HA
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Pool of MTC devices
MTC server
MTC serverFAIL!!!
Overload
Machine Type Communication
M2M is recognized as a key segment in future packet networks
Initial 3GPP efforts have focused on the ability to differentiate machine-type devices
• This allows the operator to selectively handle such devices in overload situations
• Low priority indicator has been added to the relevant UE-network procedures
• Overload and Congestion control is done on both core network and radio access network based on this indicator
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
MTC – basic architecture
Work in progress…
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3GPP Boundary
MTC Server
GGSN / PGW / PDG
Proxy (TBD)
SGSN / MME
HLR / HSS
API MTCi
SMS-SC IP-SM-GW
Legacy SMS
IP SMS
MTCsp
Indirect model – service provider controlled
Indirect model – operator controlled Gr/S6a
Um / Uu /
LTE-Uu
RAN M2M
Application
Internal interfaces
(TBD)
Control plane User plane
Direct model Gi/SGi
M2M Application UE
MTC User
MTCsms
THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Evolution of MTC
Further functionality being added to 3GPP standards in the following areas• Reachability Aspects, MTC Feature control, Device Triggering
• Addressing, Identifiers - especially removal of MSISDN dependencies in the architecture
• Signaling Optimizations, Small Data Transmissions, MTC Monitoring
MTC is a substantial technical area, full completion will span across multiple future Releases
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Rel.11: Service Awareness and Privacy Policies
Analyzing traffic, standardization of detecting the service traffic and
applying the policy
eNB SGW
MME
PGW TDF
PCRF
UDR/SPR
1) Request Detection
(application id,..)
2) Report Detection
(service flow info,…)
0) Get subscription
including PCC info
3) Install the
changed Rule Sd
• Traffic Detection Function newly defined
• Performs the following for the Detected traffic
• Gating of the detected service traffic either blocking or
permitting unrestricted
• Traffic Shaping of the detected service traffic
• Redirecting of detected service traffic
TDF: Traffic Detection Function
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Rel.11: IW MNO and Data Application Provider
Interface will be provided toward 3rd Party Data Application
Provider
• The following services will be proved over the newly defined interface
• Customised billing/charging, Promotion services, Group addressing
capabilities, identity services, statistics etc
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Study on Non-MTC Mobile Data Application Impacts
Study on Service Scenario and Use case on Mobile data application
Study on Network inefficiency from Mobile data application
Connection
mgmt
traffic Congestion
Service request : Idle to active transition
# of messages
per Busy Hour
MME
HSS
Overload
<Flood of registration by special event>
Surge of attach reqs
<Failure/restart of nodes>
MME
HSS
Old eNB fail!
Reg to new eNB
Overload
(Problem 1)
(Problem 2)
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THE Mobile Broadband Standard
© 3GPP 2011 3GPP Workshop, Bangalore, 30 May 2011
Thank You
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www.3gpp.org
More Information about 3GPP:
Dr. Sungho Choi
3GPP TSG SA chairman
+82 31 279 5116