AH
Uploaded byArbab Husain
94 views

244079168 lte-overview

This document provides an overview of LTE and the Evolved Packet Core (EPC). It describes the key objectives and requirements of LTE such as increased throughput, reduced latency, improved spectrum efficiency and a flat, scalable IP-based architecture. The document outlines the standardization process through 3GPP and lists the main functional elements of the EUTRAN and EPC such as the evolved NodeB and mobility management entity. It also summarizes some of the key features of LTE such as OFDMA, MIMO, dynamic scheduling and a packet-switched only core network.

Embed presentation

Download to read offline
RA41201EN20GLA0 LTE – EPC Overview 1 1 © Nokia Siemens Networks RA41201EN20GLA0 LTE RPESS LTE – EPC Overview
RA41201EN20GLA0 LTE – EPC Overview 2 2 © Nokia Siemens Networks RA41201EN20GLA0 Nokia Siemens Networks Academy Legal notice Intellectual Property Rights All copyrights and intellectual property rights for Nokia Siemens Networks training documentation, product documentation and slide presentation material, all of which are forthwith known as Nokia Siemens Networks training material, are the exclusive property of Nokia Siemens Networks. Nokia Siemens Networks owns the rights to copying, modification, translation, adaptation or derivatives including any improvements or developments. Nokia Siemens Networks has the sole right to copy, distribute, amend, modify, develop, license, sublicense, sell, transfer and assign the Nokia Siemens Networks training material. Individuals can use the Nokia Siemens Networks training material for their own personal self-development only, those same individuals cannot subsequently pass on that same Intellectual Property to others without the prior written agreement of Nokia Siemens Networks. The Nokia Siemens Networks training material cannot be used outside of an agreed Nokia Siemens Networks training session for development of groups without the prior written agreement of Nokia Siemens Networks.
RA41201EN20GLA0 LTE – EPC Overview 3 3 © Nokia Siemens Networks RA41201EN20GLA0 Module Objectives After completing this module, the participant should be able to: • List the LTE/SAE main requirements • Underline the LTE/SAE key features • Review the 3GPP specification work concerning LTE/SAE. • Describe the LTE Network Architecture • List the key functionalities of the evolved NB • Understand the protocol stack implemented on EUTRAN interfaces
RA41201EN20GLA0 LTE – EPC Overview 4 4 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 5 5 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 6 6 © Nokia Siemens Networks RA41201EN20GLA0 The way to the Long-Term Evolution (LTE): a 3GPP driven initiative • LTE is 3GPP system for the years 2010 to 2020 & beyond. • It shall especially compete with WiMAX 802.16e/m • It must keep the support for high & highest mobility users like in GSM/UMTS networks • The architectural changes are big compared to UMTS • LTE commercial launch has started early 2010.
RA41201EN20GLA0 LTE – EPC Overview 7 7 © Nokia Siemens Networks RA41201EN20GLA0 What are the LTE challenges? • Best price, transparent flat rate • Full Internet • Click-bang responsiveness • reduce cost per bit • provide high data rate • provide low latency The Users’ expectation… ..leads to the operator’s challenges Price per Mbyte has to be reduced to remain profitable User experience will have an impact on ARPU LTE: lower cost per bit and improved end user experience UMTS HSPA I-HSPA LTE Cost per MByte HSPA LTE HSPA LTE Throughput Latency Factor10 Factor2-3
RA41201EN20GLA0 LTE – EPC Overview 8 8 © Nokia Siemens Networks RA41201EN20GLA0 LTE = Long Term Evolution • Peak data rates of 303 Mbps / 75 Mbps • Low latency 10-20 ms Enhanced consumer experience • Scalable bandwidth of 1.4 – 20 MHz Easy to introduce on any frequency band • OFDM technology • Flat, scalable IP based architecture Decreased cost / GB • Next step for GSM/WCDMA/HSPA and CDMA A true global roaming technology
RA41201EN20GLA0 LTE – EPC Overview 9 9 © Nokia Siemens Networks RA41201EN20GLA0 Schedule for 3GPP releases • Next step for GSM/WCDMA/HSPA and cdma2000 A true global roaming technology year 3GPP Rel. 99/43GPP Rel. 99/4 Rel. 5Rel. 5 Rel. 6Rel. 6 Rel. 7Rel. 7 2007200520032000 2008 HSDPA IMS HSUPA MBMS WLAN IW HSPA+ LTE Studies Specification: 2009 • LTE have been developed by the same standardization organization. The target has been simple multimode implementation and backwards compatibility. • HSPA and LTE have in common: – Sampling rate using the same clocking frequency – Same kind of Turbo coding • The harmonization of these parameters is important as sampling and Turbo decoding are typically done on hardware due to high processing requirements. • WiMAX and LTE do not have such harmonization. Rel. 8Rel. 8 LTE & EPC Rel. 9Rel. 9 LTE-A studies LTE-A: LTE-Advanced Rel. 10Rel. 10 LTE-A UMTS/ WCDMA 2011
RA41201EN20GLA0 LTE – EPC Overview 10 10 © Nokia Siemens Networks RA41201EN20GLA0 Comparison of Throughput and Latency (1/2) HSPA R6 Max. peak data rate Mbps Evolved HSPA (Rel. 7/8, 2x2 MIMO) LTE 2x20 MHz (2x2 MIMO) LTE 2x20 MHz (4x4 MIMO) Downlink Uplink 350 300 250 200 150 100 50 0 HSPAevo (Rel8) LTE * Server near RAN Latency (Rountrip delay)* DSL (~20-50 ms, depending on operator) 0 20 40 60 80 100 120 140 160 180 200 GSM/ EDGE HSPA Rel6 min max ms Enhanced consumer experience: - drives subscriber uptake - allow for new applications - provide additional revenue streams • Peak data rates of 303 Mbps / 75 Mbps • Low latency 10-20 ms
RA41201EN20GLA0 LTE – EPC Overview 11 11 © Nokia Siemens Networks RA41201EN20GLA0 Scalable bandwidth • Scalable bandwidth of 1.4 – 20 MHz Easy to introduce on any frequency band: Frequency Refarming (Cost efficient deployment on lower frequency bands supported) Scalable Bandwidth Urban 2006 2008 2010 2012 2014 2016 2018 2020 Rural 2006 2008 2010 2012 2014 2016 2018 2020 or 2.6 GHz 2.1 GHz 2.6 GHz 2.1 GHz LTE UMTS UMTS LTE 900 MHz 900 MHz GSM or GSM UMTS LTE LTE LTE
RA41201EN20GLA0 LTE – EPC Overview 12 12 © Nokia Siemens Networks RA41201EN20GLA0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 HSPA R6 HSPA R6 + UE equalizer HSPA R7 WiMAX LTE R8 bps/Hz/cell Downlink Uplink Increased Spectral Efficiency • All cases assume 2-antenna terminal reception • HSPA R7, WiMAX and LTE assume 2-antenna BTS transmission (2x2 MIMO) ITU contribution from WiMAX Forum shows DL 1.3 & UL 0.8 bps/Hz/cell Reference: - HSPA R6 and LTE R8 from 3GPP R1-071960 - HSPA R6 equalizer from 3GPP R1-063335 - HSPA R7 and WiMAX from NSN/Nokia simulations • OFDMA technology increases Spectral efficiency LTE efficiency is 3 x HSPA R6 in downlink HSPA R7 and WiMAX have Similar Spectral Efficiency
RA41201EN20GLA0 LTE – EPC Overview 13 13 © Nokia Siemens Networks RA41201EN20GLA0 Reduced Network Complexity • Flat, scalable IP based architecture Flat Architecture: 2 nodes architecture IP based Interfaces Access Core Control Evolved Node B Gateway IMS HLR/HSS Flat, IP based architecture Internet MME
RA41201EN20GLA0 LTE – EPC Overview 14 14 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Requirements Summary 1. Simplify the RAN: - Reduce the number of different types of RAN nodes, and their complexity. - Minimize the number of RAN interface types. 2. Increase throughput: Peak data rates of UL/DL 50/100 Mbps 3. Reduce latency (prerequisite for CS replacement). 4. Improve spectrum efficiency: Capacity 2-4 x higher than with Release 6 HSPA 5. Frequency flexibility & bandwidth scalability: Frequency Refarming 6. Migrate to a PS only domain in the core network: CSFB for initial phase 7. Provide efficient support for a variety of different services. Traditional CS services will be supported via VoIP, etc: EPS bearers for IMS based Voice 8. Minimise the presence of single points of failure in the network above the eNBs S1- Flex interface 9. Support for inter-working with existing 3G system & non-3GPP specified systems. 10. Operation in FDD & TDD modes 11. Improved terminal power efficiency A more detailed list of the requirements and objectives for LTE can be found in TR 25.913.
RA41201EN20GLA0 LTE – EPC Overview 15 15 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 16 16 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features EPS ( Evolved Packet System ) / SAE ( System Architecture Evolution ) / LTE ( Long Term Evolution ) EPC ( Evolved Packet Core )EPC ( Evolved Packet Core )EUTRAN ( Evolved UTRAN ) EUTRAN ( Evolved UTRAN ) IP NetworkIP Network IP NetworkIP Network IP NetworkIP Network OFDMA/SC-FDMA MIMO ( beam-forming/ spatial multiplexing) HARQ Scalable bandwidth (1.4, 3, 5, 10, .. 20 MHz) Evolved Node B / No RNC UL/DL resource scheduling IP Transport Layer QoS Aware Self Configuration PS Domain only, No CS Domain IP Transport Layer QoS Aware 3GPP (GTP) or IETF (MIPv6) Prepared for Non-3GPP Access
RA41201EN20GLA0 LTE – EPC Overview 17 17 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features – EUTRAN (1/2) Evolved NodeB • No RNC is provided anymore • The evolved Node Bs take over all radio management functionality. • This will make radio management faster & hopefully the network architecture simpler IP transport layer • E-UTRAN exclusively uses IP as transport layer UL/DL resource scheduling • In UMTS physical resources are either shared or dedicated • Evolved Node B handles all physical resource via a scheduler and assigns them dynamically to users & channels • This provides greater flexibility than the older system
RA41201EN20GLA0 LTE – EPC Overview 18 18 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features – EUTRAN (2/2) QoS awareness • The scheduler must handle & distinguish different QoS classes • Otherwise RT services would not be possible via EUTRAN • The system provides the possibility for differentiated services Self configuration • Currently under investigation • Possibility to let Evolved Node Bs configure themselves • It will not completely substitute the manual configuration & optimization
RA41201EN20GLA0 LTE – EPC Overview 19 19 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features – EPC (Evolved Packet Core) Packet Switched Domain only • no CS domain is provided • if CS applications are required, they must be implemented via IP • only one mobility management for the UE in LTE. 3GPP (GTP) or IETF (MIPv6) option • The EPC can be based either on 3GPP GTP protocols (similar to PS domain in UMTS/GPRS) or on IETF Mobile IPv6 (MIPv6) Non-3GPP access • The EPC will be prepared also to be used by non-3GPP access networks (e.g. LAN, WLAN, WiMAX, etc.) • This will provide true convergence of different packet radio access system
RA41201EN20GLA0 LTE – EPC Overview 20 20 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 21 21 © Nokia Siemens Networks RA41201EN20GLA0 Standardisation around LTE Next Generation Mobile Networks. Is a group of mobile operators, to provide a coherent vision for technology evolution beyond 3G for the competitive delivery of broadband wireless services. More in www.ngmn.org Collaboration agreement established in December 1998. The collaboration agreement brings together a number of telecommunications standards bodies: ARIB, CCSA, ETSI, ATIS, TTA, and TTC. More in www.3gpp.org LTE/SAE Trial Initiative. Is was founded in may 2007 by a group of leading telecommunications companies. Its aim is to prove the potential and benefits that the LTE technology can offer. More in http://www.lstiforum.com/ LSTI
RA41201EN20GLA0 LTE – EPC Overview 22 22 © Nokia Siemens Networks RA41201EN20GLA0 From 3GPP Specs into Commercial Launch • Historically, 1.25-1.5 years from the specs approval until backwards compatibility (ASN.1) with HSDPA and HSUPA • Historically, 1.25-1.5 years from the backwards compatibility until commercial launch with HSDPA & HSUPA • LTE backwards compatibility: 03/2009. First commercial launch: 12/2009 2003 2004 2005 2006 2007 1 2 3 1 2 3 1.5 years 1.5 years 1.25 years 1.25 years 1 = Specs approved 2 = Backwards compatibility 3 = 1st commercial launch HSDPA HSUPA 2008 2009 2010 1 2 3 1.25 years 0.75 years LTE
RA41201EN20GLA0 LTE – EPC Overview 23 23 © Nokia Siemens Networks RA41201EN20GLA0 3GPP LTE Background (1/2) Milestones • End 2004 3GPP workshop on UTRAN Long Term Evolution • March 2005 Study item started • December 2005 Multiple access selected • March 2006 Functionality split between radio and core agreed • September 2006 Study item closed & approval of the work items • December 2007 1st version of all radio specs approved • March 2008 3GPP Release 8 Stage 1 specifications were frozen • December 2008 3GPP Release 8 2005 2006 2007 2008 Feasibility study started Multiple access selected Feasibility study closed Work item started Work plan approved Stage 2 approved Stage 3 approved Radio Specs approved
RA41201EN20GLA0 LTE – EPC Overview 24 24 © Nokia Siemens Networks RA41201EN20GLA0 3GPP LTE Background (2/2) Schedule • 2009 2100 & 2100/1700 MHz frequency bands selected; Release 9 • 2010 Additional frequency bands added (700, 800 & 2600 MHz). Inter-RAT Mobility. LTE capable devices • 2011 Network Sharing. Self-optimized networks. Part of 3GPP Release 9. Release 10 (LTE-Advanced) 2008 2009 2010 2011 Demonstrate LTE Air Interface Performance Operator Trials. Friendly- use networks LTE Networks Launch: commercial solution available Large Scale LTE Networks. VoIP service optimized.
RA41201EN20GLA0 LTE – EPC Overview 25 25 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 26 26 © Nokia Siemens Networks RA41201EN20GLA0 Network Architecture Evolution SAE GWGGSN SGSN RNC Node B (NB) Direct tunnel GGSN SGSN I-HSPA MME/SGSN HSPA R7 HSPA R7 LTE R8 Node B + RNC Functionality Evolved Node B (eNB) GGSN SGSN RNC Node B (NB) HSPA HSPA R6 LTE User plane Control Plane • Flat architecture: single network element in user plane in radio network and core network SAE: System Architecture Evolution SAE GW: Serving Gateway +PDN Gateway
RA41201EN20GLA0 LTE – EPC Overview 27 27 © Nokia Siemens Networks RA41201EN20GLA0 Evolved Packet System (EPS) Architecture - Subsystems • The EPS architecture goal is to optimize the system for packet data transfer. • There are no circuit switched components. The EPS architecture is made up of: – EPC: Evolved Packet Core, also referred as SAE – eUTRAN: Radio Access Network, also referred as LTE LTE or eUTRAN SAE or EPC EPS Architecture • EPC provides access to external packet IP networks and performs a number of CN related functions (e.g. QoS, security, mobility and terminal context management) for idle and active terminals • eUTRAN performs all radio interface related functions
RA41201EN20GLA0 LTE – EPC Overview 28 28 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Network Elements Main references to architecture in 3GPP specs.: TS23.401,TS23.402,TS36.300 LTE-UE Evolved UTRAN (E-UTRAN) MME S10 S6a Serving Gateway S1-U S11 PDN Gateway PDN Evolved Packet Core (EPC) S1-MME PCRF S7 Rx+ SGiS5/S8 Evolved Node B (eNB) X2 LTE-Uu HSS Mobility Management Entity Policy & Charging Rule Function SAE Gateway eNB
RA41201EN20GLA0 LTE – EPC Overview 29 29 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 30 30 © Nokia Siemens Networks RA41201EN20GLA0 Inter-cell RRM: HO, load balancing between cells Radio Bearer Control: setup , modifications and release of Radio Resources Connection Mgt. Control: UE State Management, MME-UE Connection Radio Admission Control eNode B Meas. collection and evaluation Dynamic Resource Allocation (Scheduler) eNB Functions IP Header Compression/ de-compression Access Layer Security: ciphering and integrity protection on the radio interface MME Selection at Attach of the UE User Data Routing to the SAE GW Transmission of Paging Msg coming from MME Transmission of Broadcast Info (e.g. System info, MBMS) • Only network element defined as part of eUTRAN. • Replaces the old Node B / RNC combination from 3G. • Terminates the complete radio interface including physical layer. • Provides all radio management functions • To enable efficient inter-cell radio management for cells not attached to the same eNB, there is a inter-eNB interface X2 specified. It will allow to coordinate inter-eNB handovers without direct involvement of EPC during this process. Evolved Node B (eNB)
RA41201EN20GLA0 LTE – EPC Overview 31 31 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 32 32 © Nokia Siemens Networks RA41201EN20GLA0 LTE Radio Interface & the X2 Interface LTE-Uu interface • Air interface of LTE • Based on OFDMA in DL & SC-FDMA in UL • FDD & TDD duplex methods • Scalable bandwidth: 1.4MHz - 20 MHz X2 interface • Inter eNB interface • X2AP: special signalling protocol (Application Part) • Functionalities: – In inter- eNB HO to facilitate Handover and provide data forwarding. – In RRM to provide e.g. load information to neighbouring eNBs to facilitate interference management. – Logical interface: doesn’t need direct site-to-site connection, i.e. can be routed via CN as well (E)-RRC(E)-RRC User PDUsUser PDUs User PDUsUser PDUs PDCPPDCP .. RLCRLC MACMAC LTE-L1 (FDD/TDD-OFDMA/SC-FDMA)LTE-L1 (FDD/TDD-OFDMA/SC-FDMA) TS 36.300 eNB LTE-Uu eNB X2 User PDUsUser PDUs GTP-UGTP-U UDPUDP IPIP L1/L2L1/L2 TS 36.424 X2-UP (User Plane)X2-CP (Control Plane) X2-APX2-AP SCTPSCTP IPIP L1/L2L1/L2TS 36.421 TS 36.422 TS 36.423 TS 36.421 TS 36.420 UDP: User Datagram Protocol ( L4 Transport Layer)
RA41201EN20GLA0 LTE – EPC Overview 33 33 © Nokia Siemens Networks RA41201EN20GLA0 S1-MME & S1-U Interfaces MME Serving Gateway S1-MME (Control Plane) S1-U (User Plane) NAS ProtocolsNAS Protocols S1-APS1-AP SCTPSCTP IPIP L1/L2L1/L2 User PDUsUser PDUs GTP-UGTP-U UDPUDP IPIP L1/L2L1/L2 TS 36.411 TS 36.411 TS 36.412 TS 36.413 TS 36.414 TS 36.410 eNB S1 interface is divided into two parts: S1-MME interface • Control Plane interface between eNB & MME • S1AP:S1 Application Protocol • MME & UE will exchange NAS signaling via eNB through this interface ( i.e. authentication, tracking area updates) • S1 Flex: an eNB is allowed to connect to a maximum of 16 MME. (LTE2, RL20) S1-U interface • User plane interface between eNB & Serving Gateway. • Pure user data interface (U=User plane) LTE4: Multi-Operator Core Network (MO-CN): An eNB can be connected simultaneously to the different Evolved Packet Cores (EPCs) of different operators, and shared by them.
RA41201EN20GLA0 LTE – EPC Overview 34 34 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
RA41201EN20GLA0 LTE – EPC Overview 35 35 © Nokia Siemens Networks RA41201EN20GLA0 LTE: What is new? • new radio transmission schemes: – OFDMA in DL – SC-FDMA in UL – MIMO Multiple Antenna Technology • New radio protocol architecture: – Complexity reduction – Focus on shared channel operation, no dedicated channels anymore • new network architecture: – More functionality in the base station (eNodeB) – Focus on PS domain – Flat architecture (2-nodes) – All-IP • Important for Radio Planning – Frequency Reuse 1 ▪ No need for Frequency Planning – No need to define neighbour lists in LTE OFDMA: Orthogonal Frequency Division Multiple Access SC-FDMA: Single Carrier Frequency Division Multiple Access PS: Packet Switched

More Related Content

PDF
LTE Basic Principle
byTaiz Telecom
 
PDF
ECOC 2018 - FlexE Delivers
byLeah Wilkinson
 
PDF
Design Principles for 5G
byOpen Networking Summit
 
PPTX
The Path to Open, Interoperable Optical Networking - "T-API Update"
byLeah Wilkinson
 
PDF
LTE Architecture and LTE Attach
byaliirfan04
 
PDF
GTP Overview
byaliirfan04
 
PDF
Lte epc ieee_comsoc_rao_april_8_2010
bySupachok Sappasri
 
PDF
Lte Ran Architecture Aspects
byBP Tiwari
 
LTE Basic Principle
byTaiz Telecom
 
ECOC 2018 - FlexE Delivers
byLeah Wilkinson
 
Design Principles for 5G
byOpen Networking Summit
 
The Path to Open, Interoperable Optical Networking - "T-API Update"
byLeah Wilkinson
 
LTE Architecture and LTE Attach
byaliirfan04
 
GTP Overview
byaliirfan04
 
Lte epc ieee_comsoc_rao_april_8_2010
bySupachok Sappasri
 
Lte Ran Architecture Aspects
byBP Tiwari
 

What's hot

PDF
Access Network Evolution
byCisco Canada
 
PDF
OIF CEI-112G at OFC 2020 Presentation
byLeah Wilkinson
 
PDF
LTE Architecture and interfaces
byAbdulrahman Fady
 
PDF
39018631 lte-overview
bycefer mecid
 
PDF
OIF CIOE Presentation, Junjie Li
byLeah Wilkinson
 
PPTX
NGON 2019 OIF Optical Masterclass
byLeah Wilkinson
 
PDF
Lte network chart_poster
byDipeshHShah
 
PDF
LTE network: How it all comes together architecture technical poster
byDavid Swift
 
PPTX
OIF Open Transport API for Interoperable Optical Networking
byLeah Wilkinson
 
PPTX
OIF OFC 2019 400ZR Specification Update
byLeah Wilkinson
 
PDF
LTE Testing | 4G Testing
byIxia
 
PDF
Aug12 sridhar
byHossein Abbasi
 
PDF
LTE Fundamentals Training and Certification by TELCOMA Global
byGaganpreet Singh Walia
 
PDF
Enabling Key Applications for Transport SDN - Optinet China 2020
byLeah Wilkinson
 
PDF
2018 OIF SDN T-API Readout 6.2018
byLeah Wilkinson
 
PDF
Overview lte
byProcExpl
 
PPTX
OIF - The Path to Open, Interoperable Optical Networking "Interoperability Te...
byLeah Wilkinson
 
PDF
Software Defined RAN
byOpen Networking Summit
 
Access Network Evolution
byCisco Canada
 
OIF CEI-112G at OFC 2020 Presentation
byLeah Wilkinson
 
LTE Architecture and interfaces
byAbdulrahman Fady
 
39018631 lte-overview
bycefer mecid
 
OIF CIOE Presentation, Junjie Li
byLeah Wilkinson
 
NGON 2019 OIF Optical Masterclass
byLeah Wilkinson
 
Lte network chart_poster
byDipeshHShah
 
LTE network: How it all comes together architecture technical poster
byDavid Swift
 
OIF Open Transport API for Interoperable Optical Networking
byLeah Wilkinson
 
OIF OFC 2019 400ZR Specification Update
byLeah Wilkinson
 
LTE Testing | 4G Testing
byIxia
 
Aug12 sridhar
byHossein Abbasi
 
LTE Fundamentals Training and Certification by TELCOMA Global
byGaganpreet Singh Walia
 
Enabling Key Applications for Transport SDN - Optinet China 2020
byLeah Wilkinson
 
2018 OIF SDN T-API Readout 6.2018
byLeah Wilkinson
 
Overview lte
byProcExpl
 
OIF - The Path to Open, Interoperable Optical Networking "Interoperability Te...
byLeah Wilkinson
 
Software Defined RAN
byOpen Networking Summit
 

Similar to 244079168 lte-overview

PPT
Module 2-lte architecture and protocol
byravikbdayal
 
PDF
4G Overview -4G Overview Sessions 1&2&3.pdf
byssusercd9b10
 
PDF
Iscit2007 keynote juergenschindler
byMuhammad Ali Basra
 
PPT
01 lte radio_parameters_lte_overview_rl1
byMd.Akm Sahansha
 
PPTX
Air Interface des réseaux 4eme génération LTE
byMehdiAlsett
 
PDF
Day 1 LTE Technology Overview
bymahesh savita
 
PDF
Lte training session_1
bySajal Kumar Das
 
PPT
TCO Comparison of different tehnologies.ppt
byKenan451559
 
PPTX
01 FO_BT1101_C01_1 LTE FDD Principles and Key Technologies.pptx
bySudheeraIndrajith
 
PPTX
Mobile computing – module 6
byJIGNESH PATEL
 
PPT
3 g to 4g transformation
byShehryar Khan
 
PDF
WC and LTE 4G Broadband module 3- 2019 by Prof.Suresha V
bySURESHA V
 
PDF
Lteeutranrsanov2012combinedday 121031161500-phpapp02
byc09271
 
PDF
From LTE to LTE-A
byeXplanoTech
 
PDF
Comparison lte wi_max_ball_ew2007
byMuhammad Ali Basra
 
PDF
3GPP_4G to 5G networks evolution and releases.pdf
byXinHuang548256
 
PDF
4 g long term evolution introduction 18-jan-2014
byWisawa Wongpang
 
PPT
Wireless Lab NUI 070610
byJohn Holland
 
PDF
1 lf-pau-lte
byPankaj Patel
 
PDF
Georgia tech 2010
byoeslle
 
Module 2-lte architecture and protocol
byravikbdayal
 
4G Overview -4G Overview Sessions 1&2&3.pdf
byssusercd9b10
 
Iscit2007 keynote juergenschindler
byMuhammad Ali Basra
 
01 lte radio_parameters_lte_overview_rl1
byMd.Akm Sahansha
 
Air Interface des réseaux 4eme génération LTE
byMehdiAlsett
 
Day 1 LTE Technology Overview
bymahesh savita
 
Lte training session_1
bySajal Kumar Das
 
TCO Comparison of different tehnologies.ppt
byKenan451559
 
01 FO_BT1101_C01_1 LTE FDD Principles and Key Technologies.pptx
bySudheeraIndrajith
 
Mobile computing – module 6
byJIGNESH PATEL
 
3 g to 4g transformation
byShehryar Khan
 
WC and LTE 4G Broadband module 3- 2019 by Prof.Suresha V
bySURESHA V
 
Lteeutranrsanov2012combinedday 121031161500-phpapp02
byc09271
 
From LTE to LTE-A
byeXplanoTech
 
Comparison lte wi_max_ball_ew2007
byMuhammad Ali Basra
 
3GPP_4G to 5G networks evolution and releases.pdf
byXinHuang548256
 
4 g long term evolution introduction 18-jan-2014
byWisawa Wongpang
 
Wireless Lab NUI 070610
byJohn Holland
 
1 lf-pau-lte
byPankaj Patel
 
Georgia tech 2010
byoeslle
 

More from Arbab Husain

PPT
procedure_to_config_OSS_over_IP (2).ppt
byArbab Husain
 
PDF
AWS & DevOps-Course-Content.pdf
byArbab Husain
 
PDF
SIP + AWS SYLLABUS .pdf
byArbab Husain
 
PDF
lte-to-3g-circuit-switched-fall-back.pdf
byArbab Husain
 
PDF
Codec
byArbab Husain
 
PDF
172809159 sip
byArbab Husain
 
procedure_to_config_OSS_over_IP (2).ppt
byArbab Husain
 
AWS & DevOps-Course-Content.pdf
byArbab Husain
 
SIP + AWS SYLLABUS .pdf
byArbab Husain
 
lte-to-3g-circuit-switched-fall-back.pdf
byArbab Husain
 
Codec
byArbab Husain
 
172809159 sip
byArbab Husain
 

Recently uploaded

PPT
HDTV and DTV Standards: The United States Opts for a Digital HDTV Standard
byJeffrey Hart
 
PPTX
Why 2026 Could Be a Turning Point for Decentralized Exchanges.pptx
bycalliemorgan193
 
PDF
oracle_apex_tamil_export_an_application.pdf
byUthamaselvan M
 
PDF
Industrial RFID Landscape for 2025 - Readers, Tags, Antennas, Printers, etc
byRich Rogers
 
PDF
How to Connect HP LaserJet MFP M234dwe to WiFi
byPrinter Tales
 
PPTX
Digital transformation success powered by EPM and NexInfo.pptx
byjayasuryanexinfo
 
PDF
What is Voice User Interface (VUI) Definition & Examples.pdf
byDesign Studio UI UX
 
PDF
The Future of AI-Powered Fashion Design 10 Top Generators for 2026
bymockitseo
 
PPTX
AN Introduction to UNIX File System—An Approach
bysonjuktaweb
 
PPT
Information and Communication Technologies and Power
byJeffrey Hart
 
PDF
Generating Structured Outputs from Unstructured Content Using LLMs
byEnterprise Knowledge
 
PPTX
Search Engine Responses to Conspiratorial Search Practices AANZCA 2025 Presen...
bykkasianenko
 
PDF
Josh Chu Boston - An Innovative Technology Executive
byJosh Chu Boston
 
PPTX
Document Reconstruction using AI & Deep Learning
bysonjuktaweb
 
PDF
SEO in Charleston SC | Local SEO Strategies to Grow Your Business.pdf
bycustomdigitalsolutio1
 
PDF
Artificial Intelligence(AI) full Book.pdf
bydeyanimesh299
 
PPTX
Pizza Chain Market Data Scraping for Better Insights Report.pptx
byWeb Data Crawler
 
PPTX
Scrape YouTube Video Data for Influencer Analytics.pptx
byWeb Data Crawler
 
PDF
Scott M. Graffius' Phases of Team Development - Applied to Human Teams and Hu...
byScott M. Graffius
 
PDF
The CISO_Transformation_Playbook From Cost Centre to Chief Trust Officer
bysajjasridhar1990
 
HDTV and DTV Standards: The United States Opts for a Digital HDTV Standard
byJeffrey Hart
 
Why 2026 Could Be a Turning Point for Decentralized Exchanges.pptx
bycalliemorgan193
 
oracle_apex_tamil_export_an_application.pdf
byUthamaselvan M
 
Industrial RFID Landscape for 2025 - Readers, Tags, Antennas, Printers, etc
byRich Rogers
 
How to Connect HP LaserJet MFP M234dwe to WiFi
byPrinter Tales
 
Digital transformation success powered by EPM and NexInfo.pptx
byjayasuryanexinfo
 
What is Voice User Interface (VUI) Definition & Examples.pdf
byDesign Studio UI UX
 
The Future of AI-Powered Fashion Design 10 Top Generators for 2026
bymockitseo
 
AN Introduction to UNIX File System—An Approach
bysonjuktaweb
 
Information and Communication Technologies and Power
byJeffrey Hart
 
Generating Structured Outputs from Unstructured Content Using LLMs
byEnterprise Knowledge
 
Search Engine Responses to Conspiratorial Search Practices AANZCA 2025 Presen...
bykkasianenko
 
Josh Chu Boston - An Innovative Technology Executive
byJosh Chu Boston
 
Document Reconstruction using AI & Deep Learning
bysonjuktaweb
 
SEO in Charleston SC | Local SEO Strategies to Grow Your Business.pdf
bycustomdigitalsolutio1
 
Artificial Intelligence(AI) full Book.pdf
bydeyanimesh299
 
Pizza Chain Market Data Scraping for Better Insights Report.pptx
byWeb Data Crawler
 
Scrape YouTube Video Data for Influencer Analytics.pptx
byWeb Data Crawler
 
Scott M. Graffius' Phases of Team Development - Applied to Human Teams and Hu...
byScott M. Graffius
 
The CISO_Transformation_Playbook From Cost Centre to Chief Trust Officer
bysajjasridhar1990
 

244079168 lte-overview

  • 1.
    RA41201EN20GLA0 LTE – EPCOverview 1 1 © Nokia Siemens Networks RA41201EN20GLA0 LTE RPESS LTE – EPC Overview
  • 2.
    RA41201EN20GLA0 LTE – EPCOverview 2 2 © Nokia Siemens Networks RA41201EN20GLA0 Nokia Siemens Networks Academy Legal notice Intellectual Property Rights All copyrights and intellectual property rights for Nokia Siemens Networks training documentation, product documentation and slide presentation material, all of which are forthwith known as Nokia Siemens Networks training material, are the exclusive property of Nokia Siemens Networks. Nokia Siemens Networks owns the rights to copying, modification, translation, adaptation or derivatives including any improvements or developments. Nokia Siemens Networks has the sole right to copy, distribute, amend, modify, develop, license, sublicense, sell, transfer and assign the Nokia Siemens Networks training material. Individuals can use the Nokia Siemens Networks training material for their own personal self-development only, those same individuals cannot subsequently pass on that same Intellectual Property to others without the prior written agreement of Nokia Siemens Networks. The Nokia Siemens Networks training material cannot be used outside of an agreed Nokia Siemens Networks training session for development of groups without the prior written agreement of Nokia Siemens Networks.
  • 3.
    RA41201EN20GLA0 LTE – EPCOverview 3 3 © Nokia Siemens Networks RA41201EN20GLA0 Module Objectives After completing this module, the participant should be able to: • List the LTE/SAE main requirements • Underline the LTE/SAE key features • Review the 3GPP specification work concerning LTE/SAE. • Describe the LTE Network Architecture • List the key functionalities of the evolved NB • Understand the protocol stack implemented on EUTRAN interfaces
  • 4.
    RA41201EN20GLA0 LTE – EPCOverview 4 4 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 5.
    RA41201EN20GLA0 LTE – EPCOverview 5 5 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 6.
    RA41201EN20GLA0 LTE – EPCOverview 6 6 © Nokia Siemens Networks RA41201EN20GLA0 The way to the Long-Term Evolution (LTE): a 3GPP driven initiative • LTE is 3GPP system for the years 2010 to 2020 & beyond. • It shall especially compete with WiMAX 802.16e/m • It must keep the support for high & highest mobility users like in GSM/UMTS networks • The architectural changes are big compared to UMTS • LTE commercial launch has started early 2010.
  • 7.
    RA41201EN20GLA0 LTE – EPCOverview 7 7 © Nokia Siemens Networks RA41201EN20GLA0 What are the LTE challenges? • Best price, transparent flat rate • Full Internet • Click-bang responsiveness • reduce cost per bit • provide high data rate • provide low latency The Users’ expectation… ..leads to the operator’s challenges Price per Mbyte has to be reduced to remain profitable User experience will have an impact on ARPU LTE: lower cost per bit and improved end user experience UMTS HSPA I-HSPA LTE Cost per MByte HSPA LTE HSPA LTE Throughput Latency Factor10 Factor2-3
  • 8.
    RA41201EN20GLA0 LTE – EPCOverview 8 8 © Nokia Siemens Networks RA41201EN20GLA0 LTE = Long Term Evolution • Peak data rates of 303 Mbps / 75 Mbps • Low latency 10-20 ms Enhanced consumer experience • Scalable bandwidth of 1.4 – 20 MHz Easy to introduce on any frequency band • OFDM technology • Flat, scalable IP based architecture Decreased cost / GB • Next step for GSM/WCDMA/HSPA and CDMA A true global roaming technology
  • 9.
    RA41201EN20GLA0 LTE – EPCOverview 9 9 © Nokia Siemens Networks RA41201EN20GLA0 Schedule for 3GPP releases • Next step for GSM/WCDMA/HSPA and cdma2000 A true global roaming technology year 3GPP Rel. 99/43GPP Rel. 99/4 Rel. 5Rel. 5 Rel. 6Rel. 6 Rel. 7Rel. 7 2007200520032000 2008 HSDPA IMS HSUPA MBMS WLAN IW HSPA+ LTE Studies Specification: 2009 • LTE have been developed by the same standardization organization. The target has been simple multimode implementation and backwards compatibility. • HSPA and LTE have in common: – Sampling rate using the same clocking frequency – Same kind of Turbo coding • The harmonization of these parameters is important as sampling and Turbo decoding are typically done on hardware due to high processing requirements. • WiMAX and LTE do not have such harmonization. Rel. 8Rel. 8 LTE & EPC Rel. 9Rel. 9 LTE-A studies LTE-A: LTE-Advanced Rel. 10Rel. 10 LTE-A UMTS/ WCDMA 2011
  • 10.
    RA41201EN20GLA0 LTE – EPCOverview 10 10 © Nokia Siemens Networks RA41201EN20GLA0 Comparison of Throughput and Latency (1/2) HSPA R6 Max. peak data rate Mbps Evolved HSPA (Rel. 7/8, 2x2 MIMO) LTE 2x20 MHz (2x2 MIMO) LTE 2x20 MHz (4x4 MIMO) Downlink Uplink 350 300 250 200 150 100 50 0 HSPAevo (Rel8) LTE * Server near RAN Latency (Rountrip delay)* DSL (~20-50 ms, depending on operator) 0 20 40 60 80 100 120 140 160 180 200 GSM/ EDGE HSPA Rel6 min max ms Enhanced consumer experience: - drives subscriber uptake - allow for new applications - provide additional revenue streams • Peak data rates of 303 Mbps / 75 Mbps • Low latency 10-20 ms
  • 11.
    RA41201EN20GLA0 LTE – EPCOverview 11 11 © Nokia Siemens Networks RA41201EN20GLA0 Scalable bandwidth • Scalable bandwidth of 1.4 – 20 MHz Easy to introduce on any frequency band: Frequency Refarming (Cost efficient deployment on lower frequency bands supported) Scalable Bandwidth Urban 2006 2008 2010 2012 2014 2016 2018 2020 Rural 2006 2008 2010 2012 2014 2016 2018 2020 or 2.6 GHz 2.1 GHz 2.6 GHz 2.1 GHz LTE UMTS UMTS LTE 900 MHz 900 MHz GSM or GSM UMTS LTE LTE LTE
  • 12.
    RA41201EN20GLA0 LTE – EPCOverview 12 12 © Nokia Siemens Networks RA41201EN20GLA0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 HSPA R6 HSPA R6 + UE equalizer HSPA R7 WiMAX LTE R8 bps/Hz/cell Downlink Uplink Increased Spectral Efficiency • All cases assume 2-antenna terminal reception • HSPA R7, WiMAX and LTE assume 2-antenna BTS transmission (2x2 MIMO) ITU contribution from WiMAX Forum shows DL 1.3 & UL 0.8 bps/Hz/cell Reference: - HSPA R6 and LTE R8 from 3GPP R1-071960 - HSPA R6 equalizer from 3GPP R1-063335 - HSPA R7 and WiMAX from NSN/Nokia simulations • OFDMA technology increases Spectral efficiency LTE efficiency is 3 x HSPA R6 in downlink HSPA R7 and WiMAX have Similar Spectral Efficiency
  • 13.
    RA41201EN20GLA0 LTE – EPCOverview 13 13 © Nokia Siemens Networks RA41201EN20GLA0 Reduced Network Complexity • Flat, scalable IP based architecture Flat Architecture: 2 nodes architecture IP based Interfaces Access Core Control Evolved Node B Gateway IMS HLR/HSS Flat, IP based architecture Internet MME
  • 14.
    RA41201EN20GLA0 LTE – EPCOverview 14 14 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Requirements Summary 1. Simplify the RAN: - Reduce the number of different types of RAN nodes, and their complexity. - Minimize the number of RAN interface types. 2. Increase throughput: Peak data rates of UL/DL 50/100 Mbps 3. Reduce latency (prerequisite for CS replacement). 4. Improve spectrum efficiency: Capacity 2-4 x higher than with Release 6 HSPA 5. Frequency flexibility & bandwidth scalability: Frequency Refarming 6. Migrate to a PS only domain in the core network: CSFB for initial phase 7. Provide efficient support for a variety of different services. Traditional CS services will be supported via VoIP, etc: EPS bearers for IMS based Voice 8. Minimise the presence of single points of failure in the network above the eNBs S1- Flex interface 9. Support for inter-working with existing 3G system & non-3GPP specified systems. 10. Operation in FDD & TDD modes 11. Improved terminal power efficiency A more detailed list of the requirements and objectives for LTE can be found in TR 25.913.
  • 15.
    RA41201EN20GLA0 LTE – EPCOverview 15 15 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 16.
    RA41201EN20GLA0 LTE – EPCOverview 16 16 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features EPS ( Evolved Packet System ) / SAE ( System Architecture Evolution ) / LTE ( Long Term Evolution ) EPC ( Evolved Packet Core )EPC ( Evolved Packet Core )EUTRAN ( Evolved UTRAN ) EUTRAN ( Evolved UTRAN ) IP NetworkIP Network IP NetworkIP Network IP NetworkIP Network OFDMA/SC-FDMA MIMO ( beam-forming/ spatial multiplexing) HARQ Scalable bandwidth (1.4, 3, 5, 10, .. 20 MHz) Evolved Node B / No RNC UL/DL resource scheduling IP Transport Layer QoS Aware Self Configuration PS Domain only, No CS Domain IP Transport Layer QoS Aware 3GPP (GTP) or IETF (MIPv6) Prepared for Non-3GPP Access
  • 17.
    RA41201EN20GLA0 LTE – EPCOverview 17 17 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features – EUTRAN (1/2) Evolved NodeB • No RNC is provided anymore • The evolved Node Bs take over all radio management functionality. • This will make radio management faster & hopefully the network architecture simpler IP transport layer • E-UTRAN exclusively uses IP as transport layer UL/DL resource scheduling • In UMTS physical resources are either shared or dedicated • Evolved Node B handles all physical resource via a scheduler and assigns them dynamically to users & channels • This provides greater flexibility than the older system
  • 18.
    RA41201EN20GLA0 LTE – EPCOverview 18 18 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features – EUTRAN (2/2) QoS awareness • The scheduler must handle & distinguish different QoS classes • Otherwise RT services would not be possible via EUTRAN • The system provides the possibility for differentiated services Self configuration • Currently under investigation • Possibility to let Evolved Node Bs configure themselves • It will not completely substitute the manual configuration & optimization
  • 19.
    RA41201EN20GLA0 LTE – EPCOverview 19 19 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Key Features – EPC (Evolved Packet Core) Packet Switched Domain only • no CS domain is provided • if CS applications are required, they must be implemented via IP • only one mobility management for the UE in LTE. 3GPP (GTP) or IETF (MIPv6) option • The EPC can be based either on 3GPP GTP protocols (similar to PS domain in UMTS/GPRS) or on IETF Mobile IPv6 (MIPv6) Non-3GPP access • The EPC will be prepared also to be used by non-3GPP access networks (e.g. LAN, WLAN, WiMAX, etc.) • This will provide true convergence of different packet radio access system
  • 20.
    RA41201EN20GLA0 LTE – EPCOverview 20 20 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 21.
    RA41201EN20GLA0 LTE – EPCOverview 21 21 © Nokia Siemens Networks RA41201EN20GLA0 Standardisation around LTE Next Generation Mobile Networks. Is a group of mobile operators, to provide a coherent vision for technology evolution beyond 3G for the competitive delivery of broadband wireless services. More in www.ngmn.org Collaboration agreement established in December 1998. The collaboration agreement brings together a number of telecommunications standards bodies: ARIB, CCSA, ETSI, ATIS, TTA, and TTC. More in www.3gpp.org LTE/SAE Trial Initiative. Is was founded in may 2007 by a group of leading telecommunications companies. Its aim is to prove the potential and benefits that the LTE technology can offer. More in http://www.lstiforum.com/ LSTI
  • 22.
    RA41201EN20GLA0 LTE – EPCOverview 22 22 © Nokia Siemens Networks RA41201EN20GLA0 From 3GPP Specs into Commercial Launch • Historically, 1.25-1.5 years from the specs approval until backwards compatibility (ASN.1) with HSDPA and HSUPA • Historically, 1.25-1.5 years from the backwards compatibility until commercial launch with HSDPA & HSUPA • LTE backwards compatibility: 03/2009. First commercial launch: 12/2009 2003 2004 2005 2006 2007 1 2 3 1 2 3 1.5 years 1.5 years 1.25 years 1.25 years 1 = Specs approved 2 = Backwards compatibility 3 = 1st commercial launch HSDPA HSUPA 2008 2009 2010 1 2 3 1.25 years 0.75 years LTE
  • 23.
    RA41201EN20GLA0 LTE – EPCOverview 23 23 © Nokia Siemens Networks RA41201EN20GLA0 3GPP LTE Background (1/2) Milestones • End 2004 3GPP workshop on UTRAN Long Term Evolution • March 2005 Study item started • December 2005 Multiple access selected • March 2006 Functionality split between radio and core agreed • September 2006 Study item closed & approval of the work items • December 2007 1st version of all radio specs approved • March 2008 3GPP Release 8 Stage 1 specifications were frozen • December 2008 3GPP Release 8 2005 2006 2007 2008 Feasibility study started Multiple access selected Feasibility study closed Work item started Work plan approved Stage 2 approved Stage 3 approved Radio Specs approved
  • 24.
    RA41201EN20GLA0 LTE – EPCOverview 24 24 © Nokia Siemens Networks RA41201EN20GLA0 3GPP LTE Background (2/2) Schedule • 2009 2100 & 2100/1700 MHz frequency bands selected; Release 9 • 2010 Additional frequency bands added (700, 800 & 2600 MHz). Inter-RAT Mobility. LTE capable devices • 2011 Network Sharing. Self-optimized networks. Part of 3GPP Release 9. Release 10 (LTE-Advanced) 2008 2009 2010 2011 Demonstrate LTE Air Interface Performance Operator Trials. Friendly- use networks LTE Networks Launch: commercial solution available Large Scale LTE Networks. VoIP service optimized.
  • 25.
    RA41201EN20GLA0 LTE – EPCOverview 25 25 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 26.
    RA41201EN20GLA0 LTE – EPCOverview 26 26 © Nokia Siemens Networks RA41201EN20GLA0 Network Architecture Evolution SAE GWGGSN SGSN RNC Node B (NB) Direct tunnel GGSN SGSN I-HSPA MME/SGSN HSPA R7 HSPA R7 LTE R8 Node B + RNC Functionality Evolved Node B (eNB) GGSN SGSN RNC Node B (NB) HSPA HSPA R6 LTE User plane Control Plane • Flat architecture: single network element in user plane in radio network and core network SAE: System Architecture Evolution SAE GW: Serving Gateway +PDN Gateway
  • 27.
    RA41201EN20GLA0 LTE – EPCOverview 27 27 © Nokia Siemens Networks RA41201EN20GLA0 Evolved Packet System (EPS) Architecture - Subsystems • The EPS architecture goal is to optimize the system for packet data transfer. • There are no circuit switched components. The EPS architecture is made up of: – EPC: Evolved Packet Core, also referred as SAE – eUTRAN: Radio Access Network, also referred as LTE LTE or eUTRAN SAE or EPC EPS Architecture • EPC provides access to external packet IP networks and performs a number of CN related functions (e.g. QoS, security, mobility and terminal context management) for idle and active terminals • eUTRAN performs all radio interface related functions
  • 28.
    RA41201EN20GLA0 LTE – EPCOverview 28 28 © Nokia Siemens Networks RA41201EN20GLA0 LTE/SAE Network Elements Main references to architecture in 3GPP specs.: TS23.401,TS23.402,TS36.300 LTE-UE Evolved UTRAN (E-UTRAN) MME S10 S6a Serving Gateway S1-U S11 PDN Gateway PDN Evolved Packet Core (EPC) S1-MME PCRF S7 Rx+ SGiS5/S8 Evolved Node B (eNB) X2 LTE-Uu HSS Mobility Management Entity Policy & Charging Rule Function SAE Gateway eNB
  • 29.
    RA41201EN20GLA0 LTE – EPCOverview 29 29 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 30.
    RA41201EN20GLA0 LTE – EPCOverview 30 30 © Nokia Siemens Networks RA41201EN20GLA0 Inter-cell RRM: HO, load balancing between cells Radio Bearer Control: setup , modifications and release of Radio Resources Connection Mgt. Control: UE State Management, MME-UE Connection Radio Admission Control eNode B Meas. collection and evaluation Dynamic Resource Allocation (Scheduler) eNB Functions IP Header Compression/ de-compression Access Layer Security: ciphering and integrity protection on the radio interface MME Selection at Attach of the UE User Data Routing to the SAE GW Transmission of Paging Msg coming from MME Transmission of Broadcast Info (e.g. System info, MBMS) • Only network element defined as part of eUTRAN. • Replaces the old Node B / RNC combination from 3G. • Terminates the complete radio interface including physical layer. • Provides all radio management functions • To enable efficient inter-cell radio management for cells not attached to the same eNB, there is a inter-eNB interface X2 specified. It will allow to coordinate inter-eNB handovers without direct involvement of EPC during this process. Evolved Node B (eNB)
  • 31.
    RA41201EN20GLA0 LTE – EPCOverview 31 31 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 32.
    RA41201EN20GLA0 LTE – EPCOverview 32 32 © Nokia Siemens Networks RA41201EN20GLA0 LTE Radio Interface & the X2 Interface LTE-Uu interface • Air interface of LTE • Based on OFDMA in DL & SC-FDMA in UL • FDD & TDD duplex methods • Scalable bandwidth: 1.4MHz - 20 MHz X2 interface • Inter eNB interface • X2AP: special signalling protocol (Application Part) • Functionalities: – In inter- eNB HO to facilitate Handover and provide data forwarding. – In RRM to provide e.g. load information to neighbouring eNBs to facilitate interference management. – Logical interface: doesn’t need direct site-to-site connection, i.e. can be routed via CN as well (E)-RRC(E)-RRC User PDUsUser PDUs User PDUsUser PDUs PDCPPDCP .. RLCRLC MACMAC LTE-L1 (FDD/TDD-OFDMA/SC-FDMA)LTE-L1 (FDD/TDD-OFDMA/SC-FDMA) TS 36.300 eNB LTE-Uu eNB X2 User PDUsUser PDUs GTP-UGTP-U UDPUDP IPIP L1/L2L1/L2 TS 36.424 X2-UP (User Plane)X2-CP (Control Plane) X2-APX2-AP SCTPSCTP IPIP L1/L2L1/L2TS 36.421 TS 36.422 TS 36.423 TS 36.421 TS 36.420 UDP: User Datagram Protocol ( L4 Transport Layer)
  • 33.
    RA41201EN20GLA0 LTE – EPCOverview 33 33 © Nokia Siemens Networks RA41201EN20GLA0 S1-MME & S1-U Interfaces MME Serving Gateway S1-MME (Control Plane) S1-U (User Plane) NAS ProtocolsNAS Protocols S1-APS1-AP SCTPSCTP IPIP L1/L2L1/L2 User PDUsUser PDUs GTP-UGTP-U UDPUDP IPIP L1/L2L1/L2 TS 36.411 TS 36.411 TS 36.412 TS 36.413 TS 36.414 TS 36.410 eNB S1 interface is divided into two parts: S1-MME interface • Control Plane interface between eNB & MME • S1AP:S1 Application Protocol • MME & UE will exchange NAS signaling via eNB through this interface ( i.e. authentication, tracking area updates) • S1 Flex: an eNB is allowed to connect to a maximum of 16 MME. (LTE2, RL20) S1-U interface • User plane interface between eNB & Serving Gateway. • Pure user data interface (U=User plane) LTE4: Multi-Operator Core Network (MO-CN): An eNB can be connected simultaneously to the different Evolved Packet Cores (EPCs) of different operators, and shared by them.
  • 34.
    RA41201EN20GLA0 LTE – EPCOverview 34 34 © Nokia Siemens Networks RA41201EN20GLA0 Module Contents • LTE Requirements • LTE Key Features • LTE Standardization • LTE Architecture • Evolved NB functionalities • EUTRAN Interfaces • LTE Summary
  • 35.
    RA41201EN20GLA0 LTE – EPCOverview 35 35 © Nokia Siemens Networks RA41201EN20GLA0 LTE: What is new? • new radio transmission schemes: – OFDMA in DL – SC-FDMA in UL – MIMO Multiple Antenna Technology • New radio protocol architecture: – Complexity reduction – Focus on shared channel operation, no dedicated channels anymore • new network architecture: – More functionality in the base station (eNodeB) – Focus on PS domain – Flat architecture (2-nodes) – All-IP • Important for Radio Planning – Frequency Reuse 1 ▪ No need for Frequency Planning – No need to define neighbour lists in LTE OFDMA: Orthogonal Frequency Division Multiple Access SC-FDMA: Single Carrier Frequency Division Multiple Access PS: Packet Switched