1 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
NSN LTE ImplementationLTE/EPS Fundamentals Course
2 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Nokia Siemens Networks Academy
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3 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Objectives
After completing this module, the participant should be able to:
• Describe the Multiradio solution as the NSN approach to implement the Evolved Node B.
• List different options by NSN to implement the MME.
• Analyze The Flexi Network Server (NS) capacity and configuration.
• Identify the 2 solutions available at NSN to build up the SAE Gateway functionality.
• Discus about the Flexi Network Gateway (NG) capacity and configuration.
4 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
5 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
6 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
LTE FDD Roadmap Overview 2009-2011
High speed BroadbandSelf-Organizing Network
Quality of ServiceAdditional IRAT mobility
Spectral efficiency maximization
MIMO 2x2Intra-frequency mobilityFair schedulerNetAct - FMFlexi System Module: FSMEBandwidth: 5, 10 and 20 MHzFrequency bands• 2600 MHz• 700 MHzEthernet transportSynchronization from GPS
GBR EPS bearerMultiple EPS bearersInter RAT handover to eHRPDNACC to GSMCS fallbackSingle Radio Voice Call Continuity SON• SON NetAct Optimizer – Self
OptimizationBandwidth: 1.4, 3, 15 MHzFrequency bands:• 1900 MHz• 850 MHz• 800EU MHz (Digital Dividend)Up to 6 cells per Flexi BTSIPv4/IPv6 dual stack
Support of higher order MIMO• 4x2• 4x44 way RX divUL Multi User MIMOTTI bundlingActive Antenna SystemsFemto eNBRF sharing WCDMA -LTE RF sharing GSM - LTESystem sharing WCDMA - LTE
Air Interface PerformanceFlat Architecture
Inter RAT handover to WCDMAS1 FlexSON• BTS Auto connectivity• BTS Auto configuration• NetAct Optimizer for LTE• Automatic Neighbor Relation• Self HealingFlexi System Module: FSMD77 km cell rangeFrequency bands• 2100 MHz• 1700/2100 MHz• 1800 MHz• 1500 MHz• 900 MHzSynchronization from Ethernet
RL09 Under Development
RL10Under Planning
RL20Study Items
RL30Research Items
2008 2009 20102007 2Q/2010 4Q/2010 4Q/20114Q/2009
Note: latest LTE roadmap to be derived from
https://inside.nokiasiemensnetworks.com/global/Company/Organisation/COO/RA_index/RA_Roadmaps/Pages/RA
%20PM%20Roadmaps.aspx
7 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
8 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Revolutionary Nokia Siemens Networks Flexi BTS platform
Traditional macro BTS
Flexi Multimode BTS
The new BTS offers all the energy saving, low cost deployment and scalability benefits of the Flexi BTS family.
9 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Real life example:
Huge Difference in Conventional Macro BTS site Volume, Weight, Power consumption…
Vendor A Outdoor Macro
Vendor BOutdoor Macro
Vendor COutdoor Macro
Flexi BTS
Note: The Same RF and power configuration
10 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Feederless and distributed sites with RF module or Remote radio headFeederless and distributed sites with RF module or Remote radio head
Flexi Multiradio BTS for HSPA and LTE
Complete 3-sector BTS possible with two modules.Complete 3-sector BTS possible with two modules.
Software Definable Radio TechnologySoftware Definable Radio Technology
11 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Products for Wide Area Deployment
Remote Radio Head (RRH)- each RRH supports a single sector
Flexi Multimode System Module- provides baseband processing capability for
either the Flexi RF Module or RRH
- provides interface to Iub transport network
Flexi 3-sector RF Module- each RF module supports up to 3 sectors
WITH
OR
12 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Multiradio BTS Modular Site Solution3 Sectors BTS site with optional AC/DC converter and batteries
•One optional outdoor capable Flexi Power Module (FPMA) can house a maximum of four sub-modules:
• One to three optional AC-DC converter sub-modules (FPAA)
• One to three optional battery sub-modules (FPBA)
•One System Module (FSME or FSMD):
– Equipped with transmission sub-module (FTIB or FTLB),
One to four 3-sector RF Modules 210 W 3-sector RF Module has three 70 W Power Amplifiers supporting one, two or three sectors
OR
One to six Flexi Remote RF Heads (RRH)
13 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Multiradio BTS – Product Concept
System Module
RF Module
SW
Multimode SMEDGE SM
3-sector RF
GSM/EDGE SW WCDMA SW
LTE SW
WCDMA BTS
Multimode SM
3-sector RF
Multimode SM
3-sector RF
LTE BTS
EDGE SM
3-sector RF
GSM BTS
EDGE SM
Multimode SM
3-sector RF
GSM/WCDMA/LTE BTS
14 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
NSN Flexi Multiradio BTS - Based Architecture
Baseband processing
RP3
RP1,2 RadioprocessingB
ack
hau
l
BTS Site level functionality: • O&M• Timing/synch• Transport
Flexi BTS RF Modules
Flexi BTS System Module
15 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi BTS System Module – designed for multimode operation
Baseband processing
Radioprocessing
BTS Site level functionality • O&M• Timing/synch• Transport
Flexi BTS Multimode System Module
• HW supports both WCDMA and LTE
• Multiband operation
• Radio Modules for different frequencies can be connected to the same system module
• Multimode functionality support
• WCDMA mode (RU10)
• LTE mode (RL09)
• WCDMA-LTE concurrent mode
Notes: Flexi BTS System Module HW (FSMB) released before RU10 is for WCDMA only. Flexi BTS Multimode System Module variant FSMC HW supports LTE but with limited capacity. FSMD coming later.
16 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Multimode System Module
• HW: the same HW design is valid for LTE/WCDMA/HSPA/HSPA+
• SW: configurable for LTE/WCDMA/HSPA/HSPA+
Benefit: Easy technology migration through software-based changes.
Baseband (BB) Capacity• One System Module allows different capacity variants of 1, 2 or 3 BB units (Controlled via SW licence)
•1 BB supports:– FSMD version:
▪ 3 LTE cells (<=5 MHz)
▪ 1 LTE cell (10 MHz) + 2Tx MIMO + 2Rx MRC
▪ 1 LTE cell (20MHz) + 1Tx (NO MIMO)
– FSME version:
▪ 3 LTE cells (<=20 MHz) + 2Tx MIMO
▪ 6 LTE cells (<=10 MHz) + 2Tx MIMO
17 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Transmission Sub-Modules (1/2)
Flexi Multiradio BTS backhaul interfaces are provided by field-replaceable Flexi Transport sub-modules which are mounted on top of the Flexi System Module (FSM) core.
One System Module (FSME or FSMD), can be equipped with one of the following transmission sub-module alternatives:
•Hybrid E1/T1/JT1 transmission sub module (FTIB)
•Ethernet transmission sub module (FTLB)
18 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Transmission Sub-Modules (2/2)
FTLB •It can support 2 Gbit/s (DL+UL) throughput including IPSec, taking into account also encryption of the intra-eNB link between the two Flexi System Modules (increases BB capacity).
Flexi Transport sub-modules throughput performance (with IPSec)
FTIB •It is a lower-cost Flexi Transport sub-modules.•It has a 160 Mbit/s throughput performance (DL+UL, with IPSec). •This will be sufficient for very many eNB sites.
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Flexi 3-Sector RF Modules – designed for multimode operation
Baseband processing
Radioprocessing
BTS Site level functionality - O&M- Timing/synch- Transport
Flexi 3-Sector RF Module
• HW released in RU10 supports both WCDMA and LTE •Single frequency band, multi-carrier operation•1.4 and 3 MHz LTE carrier bandwidths (5 MHz under study)
• HW released in RU20 supports both WCDMA and LTE•Single band, multi-carrier operation•20 MHz LTE carrier bandwidth
• Multimode functionality support•WCDMA mode (RU10)•LTE mode (RL09)•GSM-WCDMA-LTE concurrent mode (RL20)
Notes: Single and Dual RF Modules (rel.1) are for WCDMA only. Availability of different frequency variants is according to WCDMA/HSPA BTS Site Solution Roadmap.
20 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi 3-Sector RF Module - Introduction
• RF module includes 3 x 70 W Power Amplifiers which provide 60 W output power at the antenna connector
Licensing- RF sector activation license activates 1 sector in 20 W mode
- Possible to have 1 to 3 RF sector activation licenses per RF module
- Additional license keys available for transmit powers of 40, 60 and 8 W
• Provides support for up to 1+1+1 configuration
• One RF Module can be SW activated and configured
to support one LTE cell with 2TX MIMO 60 W + 60 W.
• Same product can be used for WCDMA
• Provides support for up to 20 MHz bandwidth
Licensing- Basic software activation provides support for 1.4 MHz
- Additional license keys available for bandwidths of 3, 5, 10, 15 and 20 MHz
21 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi 3-Sector RF Module
Flexi Three Sector RF Module with 3 x 70 W power amplifiers
is 3 x 60 W at the antenna connector
• 1+1+1 LTE with one RF Module
• Up to 2+2+2 WCDMA with only one RF Module
• Support for Distributed site up to 20 km from System Module (optical connection) DC up to 200 m.
Sector2
Tx & RxSector 3
Tx & RxSector3
Div Rx Sector2
Div Rx Sector
1
Div Rx
Ant6 Ant5 Ant4 Ant3 Ant2 Ant1
Sector1
Tx &
Rx
TX/RX Antenna connector
RX Antenna connector
Optical connections to System Module
DC Power supply input
22 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Optional TMA/MHA
Optional AC/DC + Battery
Multimode System Module
Two 3-sector RF Modules
Flexi Multiradio BTS with MIMO(High Capacity Site) •One System Module
•Two 3-sector RF Modules for 3 sectors
•3 sectors at 120W/sector with 2x2 MIMO and 20MHz bandwidth
•RF Redundancy (implicitly)
•Optional 4 way UL diversity
•Optional TMA/MHAs
Ultimate capacity with 3x120W 2x2 MIMO and 20MHz bandwidth
Sector 1
Sector 3
Sector 2
Tx1/RX1
Tx2/RX2
RX3
RX4
23 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi BTS Remote Radio Head (RRH) – designed for multimode operation
Baseband processing
Radioprocessing
BTS Site level functionality - O&M- Timing/synch- Transport
60W Remote Radio Head• Each RRH supports a single sector
• HW supports both WCDMA and LTE
•Single frequency band, multi-carrier operation
•20 MHz LTE carrier bandwidth
• Multimode functionality support
•WCDMA mode (RU10)
•LTE mode (RL10)
•GSM-WCDMA-LTE concurrent mode (RL20)
24 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Remote Radio Head - Introduction
• Remote Radio Head (RRH) provides 60 W output power at the antenna connector
• 3 RRH are required to support a 1+1+1 configuration
• 30+30 W version of the RRH is required to support MIMO
• Same product can be used for WCDMA
• Physical size is less than 20 litres
• Allows optical link of up to 40 km to the Flexi System module
• Provides support for up to 20 MHz bandwidth
Licensing- Basic software activation provides support for 1.4 MHz
- Additional license keys available for bandwidths of 3, 5, 10, 15 and 20 MHz
Licensing- Basic transmit power capability is 20 W
- Additional license keys available for transmit powers of 40, 60 and 8 W
25 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Remote Radio Head (RRH) 60 W - Summary
SW Configurable Radio Head• Commercial HW shown here • 60 W at antenna connector • Implements 1 sector with up to 4
carriers (total bandwidth is 20MHz)
• all 3GPP frequency bands to be supported according to market need:
• 2.1 GHz, 2.6 GHz, 1.7/2.1 GHz, 700 MHz
• 850 MHz, 900 MHz, 1800 MHz, 1900 MHz
• max. 40 km optical link to BTS System Module
• 200 m DC supply distance • Passive cooling – No Fan• Size: < 20 l (2.1 GHz)
Optional AC/DC with Battery Backup
System Module
RRH
Optical Connection
26 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Evolution from any legacy BTS Flexi LTE BTS co-siting
Migration
FeederCable
TowerMountedAmplifier
AntennaPanel
2G or 3G BTS
Option 1
Existing
or new multiband
antenna
2G or 3G BTS
Flexi RF Module
Flexi System
Combining
Option 2
Existing
or new multiband
antenna
2G or 3G BTS
Combining
Flexi RF Module
Flexi System
Option 3
Feeder Cable
Tower Mounted Amplifier
ExistingAntenna
RRH or RF Module
Optical
New Antenna
2G or 3G BTS
Flexi System
27 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
W-CDMA LTE (Flexi installed base)
Migration
FeederCable
TowerMountedAmplifier
AntennaPanel
W-CDMA Flexi
Flexi System
Flexi RF Module
Option 1
2.1GHz or multiband
1.7-2.7GHz antenna
W-CDMA & LTE Flexi
Flexi System
Flexi RF Module
Combining
RF Module LTE
LTE System
Option 2
Feeder Cable
Tower Mounted Amplifier
Antenna Panel
RRH or RF Module
Antenna Panel
Flexi System
Flexi RF Module
LTE System
W-CDMA & LTE Flexi RRH
28 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Introducing LTE - General
2 x 40W1 x 40W
2 x 40W1 x 40W
LTE BTS (2x2 MIMO)
3 x 60W
3 x 60W
3G BTS
3 x 60W3 x 60W3 x 60W LTE BTS
(2x2 MIMO)
3G BTS
3G BTS
• Existing Flexi RF modules can be shared between 3G and LTE
• Requires release 2 RF module hardware
LTE System Module
3 x 60W
3G/LTE RF Module 3G BTS
• New Flexi can be added to existing Node B
• Does not depend upon release version of existing hardware
3 x 60W 3 x 60W3G System Module
• Existing Flexi RF and system modules can be upgraded to LTE
• Requires release 2 RF module hardware
• 3 general approaches to introducing LTE BTS
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Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
30 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Evolved Packet Core in 3GPP specifications (according to spec 23.401 & 23.402)
GERAN
UTRAN
Evolved UTRAN
SGSN
MME
Operator IP services:IMS, PSS,…
PCRF
HSS
UE
Serving GW
• User plane anchor for mobility between the 2G/3G access system and the LTE access system
• Lawful Interception
Mobility Management Entity (MME):
• Control Plane traffic handling
• Session and mobility management
• Idle mode mobility management
• Paging
• AAA Proxy
• NAS signaling
PDN GW
• Gateway towards Internet/Intranets
• User plane anchor for mobility between 3GPP and non-3GPP access systems (Home Agent)
• Charging Support
• Policy and Charging Enforcement (Policy and Charging Rules Function communicates with Policy and Charging Enforcement Function within PDN GW)
• Packet Filtering
• Lawful Interception
Serving GW
PDN GW
Policy and ChargingRules Function
31 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
32 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
NSN MME implementation alternatives
Flexi Multimode BTS DX200 SGSN SAE Gateway
InternetDirect tunnel
MME functionality via SW upgrade
Combi SGSN for existing 2G and 3G networks with DX200 installed base
Flexi Multimode BTS MME SAE Gateway
InternetDirect tunnel
MME functionality in stand alone product Flexi Network Server for new network deployments and early LTE trials
33 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
SGSN/MME Product Family
Common DMX Platform• Same O&M
ATCA HW
Pre
-R8
2G/3
G
SG
SN
R8
2G S
GS
N
R8
3G S
GS
N
LTE
MM
E
DX200 HW
SGSN/MME functions can be deployed on two HW variants2G/3G SGSN and Flexi NS use common SW platform and application SW componentsThis is achieved by making SW independent from the HW
Benefits:• From the O&M point of view products
look the same • Application development in one
product can be re-used
Common Server Functionality
• Same Architecture, Subscriber Database, HSS/HLR interface
DX200 HW ATCA HW
SGSN/MME
Flexi Network Server
34 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Gb
Combi SGSN and Flexi NS positioning
DX200: Combined SGSN / MMEMME can be added as SW upgrade to current SGSNs.
Positioned for complex interface environment HW adapts well to different interface variants (FR, ATM, E1/T1, IP)Field proven 2G/3G SGSN with large installed base
ATCA HW: Flexi NSPositioned for All IP and flat architecture environmentHW and SW architecture optimised for high transaction capacity and (e)NB connectivityOnly Ethernet interfacesLeverages combi SGSN SW architecture for reliable LTE MME offering and fast time to market
HLR
IuGGSN
Direct tunnel
GWAll IP(e)NB
RNCNB
BSCFR
ATM IP
E1/T1
Gn
Gr
Flexi NS
combi SGSN/MME
35 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network Server 1.0 : Product Concept
•Flexi Network Server Release 1.0 and 1.0 CD2 introduces MME control plane functionality to be used as a part of the NSN LTE offering.•In the first phase Flexi NS is positioned as a stand alone MME element. •However, evolution to a flat architecture 3G SGSN is considered as a natural evolution step in the future. Evolution to become 2G SGSN is more difficult, since user plane forwarding would be needed in that environment. •Flexi NS will be based on NSN ATCA* hardware platform, and build on top of the NSN combi SGSN SW architecture. The idea is that the MME functionality developed in NS1.0 release can be later integrated as a part of the combi SGSN. •The product name Flexi Network Server is still provisional.
*ATCA stands for Advanced Telecommunications Computing Architecture
36 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network Server Highlights
High Capacity• 2 M Subscribers• 2 M Bearers• 4.4 K transactions/s• 20 K eNodeBs
MME Functionality• Compliant to 3GPP R8
– Mobility Management– Bearer Management– Authentication
• Based on field proven SGSN SW
Telecom HW Platform• Utilizes ATCA standards designed
for telecommunication environment• 99.999 % Availability and Unit
redundancy• Conformance to environmental
specifications (ETSI, NEBS etc.)
37 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network Server Generic Architecture
•Product scales over multiple ATCA chassis– Min configuration within a single chassis– Max configuration one cabinet
• Common HW elements between Flexi Network Server (MME) and Flexi Network Gateway (SAEGW)
– Chassis– Switch– Intel Processor blades
• 16 Slot ATCA Chassis– 1GigE or 10 GiGE external interfaces
• Non-blocking 2x10Gbps switch• Intel processor blades for
– O&M– Chassis SW management– Chassis HW management– MME application
38 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network ServerDeployment of MME Functional HW units
PAPU: Packet Processing Unit
• Transaction based mobility management and S1-MME, S3, S10 and S11 interfaces to LTE.
• From 1+1 to 6+1 unitsSMMU: Signalling & Mobility Management Unit• Offer subscriber database and subscriber
state based mobility management.• Offers S6a interface in LTE• From 1+1 to 2+1 unitMCHU: Marker & Charging Unit• Offer statistic functionalities• 2n unitOMU: O&M Unit• Operation and maintenance functionality
and interface.• 2n unit
PA
PU
PA
PU
PA
PU
OM
UM
CH
U
PA
PU
PA
PU
Sw
itch
SM
MU
Sw
itchP
AP
UP
AP
U
SM
MU
SM
MU
MC
HU
OM
U
Eth
ern
et
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Eth
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Eth
ern
et
Eth
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et
Eth
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et
Eth
ern
et
HD
HD
HD
HD
Flexi NS
EthernetEthernet
SMMU(n+1)
PAPU(n+1)
OMU(2n)
S11, S4,
S3
S1-MME,
S6a
O&M
MCHU(2n)
39 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network ServerPhysical interfaces for external connectivity
PAPU: Packet Processing Unit
• 2 x 1000Base-T, RJ-45SMMU: Signalling & Mobility Management Unit• 2 x 1000Base-T, RJ-45MCHU: Marker & Charging Unit• 2 x 1000Base-T, RJ-45OMU: O&M Unit• 2 x 1000Base-T, RJ-45Switch:• 4 x 10GBase-SX/LX/EX, XFP
– (Not used at first)
Interface Standards: • 1x1000BASE-T: IEEE 802.3ab• 10GBase-SX/LX/EX: IEEE 802.3ae
PA
PU
PA
PU
PA
PU
OM
UM
CH
U
PA
PU
PA
PU
Sw
itch
SM
MU
Sw
itchP
AP
UP
AP
U
SM
MU
SM
MU
MC
HU
OM
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HD
HD
HD
HD
Flexi NS
40 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Combi SGSN with MME functionality
Nokia SGSN will evolve to MME in LTE.
MME offers control plane functionalities like Mobility Management and Authentications for LTE network.
SGSN MME offers multiaccess combi element:
• 2G, 3G, I-HSPA and LTE support
Benefits• Very cost efficient way for customers to get MME into their network.• Provides the possibility for tightly integrated SGSN/MME network element
with optimal support for 3G-LTE intersystem mobility.• Extensive feature set: many of the existing SGSN features can be
applicable for LTE access as well.• MME is based on field proved SGSN software and the DX200 platform
hardware.
RAN SGSNMME
User planeControl plane
GGSN /SAE GW
2G/EDGE
3G/HSPA
LTE
I-HSPA
42 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Combi SGSN / MME Evolution Plan
2008 2009 2010 2011 2012
SGSN
Flexi Network Server
SG8Commercial MME
Commercial MME
SG9VoIP services
Trial MME VoIP services
Standalone MME element
Combined 2G / 3G / MME element
SG7.0High Capacity SGSN
43 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
MME Capacity Roadmap
44 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
45 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Service Aware GGSN / LTE Gateway Evolution Plan
2008 2009 2010 2011
Flexi ISN
Flexi Network Gateway
HSPA+solutions
Commercial LTE launch;
serviceaware policyenforcement
3GPP rel 7 PCC (Gx)
Mobile broadband gateway –
SAE GW entry
Large scale LTE
deployment; Operator VoIP
Mature, feature-rich GGSN serving the 2G/HSPA operator needs, LTE Support
Capacity leapfor HSPA
High capacity mobile broadband gateway
LTE Support (PDN-GW)
46 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network Gateway (Flexi NG)as Serving GW and PDN GW
Leading throughput for LTE– Strong hardware evolution within ATCA industry– Best-in-class performance for data and VoIP
Flexible performance – Same hardware and software can be configured
and optimized for different deployment scenariosScalability
– Multiple shelf variants, scalable architecture– Both centralised and distributed deployment
modelsFeature-rich
– Early availability of HSPA and LTE feature sets– Strong policy enforcement support
Design for Serviceability– 2n configurations for high availability and
maintainability– In-service software updates
47 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network Gateway Overview
• Common gateway offering service connectivity for 3GPP and non 3GPP access
• Scales from slim entry to 480Gbps– Up to 16 blades in a chassis
– Up to 12 M PDP contexts
Common gateway functionality
Nokia Siemens NetworksFlexiPlatform
ATCA bladeMulti-core packet processors
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48 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi Network GatewaySAE GW for LTE
SAE-GW is split into two logical elements – Serving GW and PDN- GW.
• S-GW provides – User plane interface towards LTE radio
network
– Mobility anchoring for eNodeB changes
– Roaming in a visited network
• P-GW provides
– Mobility anchoring for LTE/ Non-3GPP IP Access interworking
– Policy enforcement, charging and Service awareness
– Lawful interception
– IP address allocation and binding
PCRF
AAA
eNodeB
MME
ePDG(non 3GPP IP Access)
Services
Implementation options:
• Integrated S-GW/P-GW or
• Standalone S-GW and P-GW.
• Connectivity with either GTP or PMIP based S5.
NSN SAE GW solution
SGW PGW
49 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Flexi NG scalability and capacity
Capacity per Service BladeRel NG 10: • 10 Gbps throughput• 600k Bearer• 3k transaction/s
Rel NG 20:• 40 Gbps throughput• 1M Bearer• 9 k transaction/s
Capacity per element (N)Rel NG 10: • 120 Gbps throughput• 7.2 M Bearer• 36k transaction/sRel NG20:• 480 Gbps throughput• 12 M Bearer• 108k transaction/s
Minimum configuration:
• 2 Service Blades
Linear scaling by adding Service Blades
Maximum configuration:
• 12 Service Blades
50 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Module Contents
• NSN LTE FDD Roadmap
• Flexi Multiradio BTS
• EPC Network Elements and their tasks
• The Mobility Management Entity (MME)
• SAE Gateway
• Appendix: ATCA Platform
51 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Why NSN has chosen ATCA for LTE Core? 1/3
• Existing Functionality from Combi-SGSN and Flexi ISN is inherited to LTE core
– Stability, Carrier Gradeness– Kick start for functionality
• Cost savings in HW development:– Use of COTS HW (Commercial off-the-shelf
HW)when applicable– Design Subcontracting (NSN IPR)
• Technology updates are available without NSN own investment
▪ NSN can choose best available technology
52 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Why NSN has chosen ATCA for LTE Core? 2/3
•HW Lifecycle management– COTS technology usage brings new HW to the
field one year earlier compared to dedicated own HW development
▪ Longer HW lifecycle in live networks▪ HW upgrades needed more seldom▪ Savings in spare parts▪ Savings in platform and product testing▪ Savings in HW type approvals
• ATCA generations– 1. generations in initial deployments 2002-2005– 2. generation 2006-2007– 3. generation 2008 –
• NSN will use latest ATCA technology
53 © Nokia Siemens Networks NSN LTE Implementation / Jose Maria Anarte / v2.0 / Document NumberFor public use – IPR applies
Why NSN has chosen ATCA for LTE Core? 3/3
• HW components can be shared both with MME and with SAEGW
• Superior Scalability for LTE core– MME can scale over multiple chassis– Inter chassis redundancy for GW– Scalable chassis from 16 slots down to 6 slots
and 2 slots