LTE World Summit 2012 Tony wakefield informa-t&m-masterclass_zone-2
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LTE World Summit 2012 Tony wakefield informa-t&m-masterclass_zone-2



LTE World Summit Barcelona May 2012

LTE World Summit Barcelona May 2012



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LTE World Summit 2012 Tony wakefield informa-t&m-masterclass_zone-2 LTE World Summit 2012 Tony wakefield informa-t&m-masterclass_zone-2 Presentation Transcript

  • LTE DemystifiedWhat is LTE and how does it work?All material is Copyright © Informa Telecoms & Media
  • The Informa Telecoms AcademyWho we are and what we doAll material is Copyright © Informa Telecoms & Media
  • What we do  Innovative and relevant Training Solutions  Extensive portfolio of Telecoms-specific courses  Variety of interactive delivery methods  Based in UK - provide training globally  30+ fully accredited, industry-experienced Trainers3
  • Some of our customers…4
  • The Informa Telecoms Academy  Three faculty Areas: – Technology and Engineering – Telecoms Business – Distance Learning  School of LTE & Advanced Communications  WiMAX Forum Certified Training Provider  Telecoms Mini MBA Series5
  • Tony Wakefield  Training Director for Informa Telecoms Academy  Experience – Started career 1981 British Telecom – Royal Navy – BSc Electronics & Physics – Member of the Inst of Leadership & Management  Telecoms Training Since 1996 – Working with many large operators and vendor companies  Programme Director for – Business Programmes – Technology Programmes (2G through to LTE & WiMAX)6
  • LTE DemystifiedWhat is LTE, how does it work, how is it deployed?All material is Copyright © Informa Telecoms & Media
  • Agenda  Intro to Broadband Concepts – Broadband Services  LTE Technology – LTE Features and Performance – LTE Architecture – LTE Radio Interface – MIMO – LTE Services and Voice – Evolution Option to LTE – Spectrum for LTE – Deployment Benefits of LTE8
  • Introduction to BroadbandWhy is Wireless Broadband so important?All material is Copyright © Informa Telecoms & Media
  • Wireless Broadband Requirements  Increasing Smartphone and “dongle” usage  Increasing range of data applications available  Video driving data traffic10
  • The Smartphone market is booming Source: Informa Telecoms & Media  50% of handsets sold worldwide will be smartphones by 2016  Wide variation in % of smartphone handsets being sold in 2011 – India 10% – Africa 14.3% – Western Europe 64% – US 66%11
  • Data is booming, but… Global data revenue and traffic growth, 2008-2013 1700% Rebased growth (2008 = 100%) 1500% 1300% Revenue 1100% Traffic 900% 700% 500% 300% 100% 2008 2009 2010 2011 2012 2013  More efficient technologies required to reduce the cost per bit  Candidate technologies are HSPA+ and LTE (or WiMAX?)12
  • Typical Broadband Services telemetry and remote control Messaging and Social Networking TV, VoD, Radio Internet Connection Voice (VoIP) Application Stores13 Cloud Computing
  • LTE TechnologySo what is Long Term Evolution?All material is Copyright © Informa Telecoms & Media
  • Long Term Evolution LTE LTE: - a new cellular radio standard allowing faster, more efficient transfer of data, enabling the next generation of mobile data services  All new All IP, Mobile Wireless Broadband Network  LTE is part of 3GPP evolution  Will be deployed alongside 2G/3G in most cases  Can we call LTE 4G? Do people care?15
  • Mobile Technology Evolution • LTE is part of Release 8 of the 3GPP Specifications GSM Phase 2+ GSM Phase 2+ R97/98 R4 R6 GSM Phase 1 New Voice Codec More GPRS Core Network HSUPA R8 R10 Basic Voice Further Optimizations EDGE Soft switch ALL IP LTE LTE Advanced? 1991 1995 1997 2000 2004 2008 2012 1993 1996 1999 2002 2006 2010 GSM Phase 2 GSM Phase 2+ R99 R5 R7 R9 Txt Messages Release 96 UMTS Radio Network HSDPA HSPA+ LTE Enhancements Basic Data GPRS IMS16
  • Wireless Technology Evolution LTE Super Fast Data TACS, NMT, AMPS 4G? Voice only GSM, CDMA, UMTS, cdma2000 LTE Advanced ? TDMA Packet data, Ultra Fast Data Voice, Data, Multimedia Text GPRS, EDGE HSDPA, HSUPA Packet data Faster Data17
  • LTE Performance  Data Rates & Bandwidth  3 – 4 times more capacity than HSPA (Release 6)  100 – 300Mbps  Less time spent downloading content, LTE is a lot faster  Greater number of mobiles connected to the network, Higher Capacity  Delay (Latency)  Lower delay times (3 – 4 times less than HSPA Release 6)  100mS Connection Setup  5 – 20mS roundtrip delay  Much more responsive web browsing  Better voice over IP performance  Other LTE Benefits  Advanced Antenna technologies increase capacity  Advanced Antenna technologies increase cell size  All IP (packet data) network for faster, more efficient services  LTE can Interwork with existing GSM/UMTS networks  LTE supports multimedia broadcasting18
  • LTE Data Performance, Downloading Typical 3 – 5 minute YouTube clip 5 Megabytes of information GPRS @ 40Kbps 125s EDGE GPRS @100Kbps 50s UMTS @ 384Kbps 13s HSPA @1Mbps 5s average user data rate LTE @ 5Mbps 1s average user data rate19
  • LTE Architecture (high level) New Access Network Base Station - Evolved Node B X2 interface for improved Handover and Interference Management Backhaul Connections are Critical, Capacity Downlink Radio Interface Orthogonal Frequency Division Multiple Access (OFDMA) Improved Performance in Urban Areas Multiple In Multiple Out (MIMO) Uplink Radio Interface Single Carrier Frequency Division Multiple Access (SC-FDMA) Good Urban Area Performance Designed for Good Battery Life eNB X2 eNB UE eUTRAN eNB – Evolved Node B; MME – Mobility Management Entity; SGW – Serving Gateway P-GW – Packet Data Gateway; UE – User Equipment20
  • LTE Architecture (high level) New Core Network MME and SGW • Evolved Packet Core Mobility Management Entity PGW • All IP for efficiency • Overall control of the UE Packet Gateway • New Network Elements and Data Sessions • Provides connection to • Designed to be Flexible and • Handle Handovers and external networks Scalable Location Management • Internet, IMS, WAP, MMS • Self Organising Network (SON) Serving Gateway • Manages the IP session for • Handles User Data the User Equipment • Controlled by the MME PGW S5 SGW S1-U eNB X2 eNB S11 UE eUTRAN EPC MME S1-MME All IP All New eNB – Evolved Node B;MME – Mobility Management Entity; SGW – Serving Gateway21 P-GW – Packet Data Gateway UE – User Equipment
  • LTE Architecture (high level) Interworking Defined interfaces for interworking UMTS/GPRS interworking WiFi/WiMAX Interworking Interworking with Trusted/non-Trusted WLAN UMTS S2 S3,S4,S12 PGW S5 SGW S1-U eNB X2 eNB S11 UE eUTRAN EPC MME All IP S1-MME All New eNB – Evolved Node B;MME – Mobility Management Entity; SGW – Serving Gateway22 P-GW – Packet Data Gateway UE – User Equipment
  • LTE Architecture (high level) Connection to External Networks IMS, MMS, WAP, Media Centers IMS SGi WiFi UMTS S2 S3,S4,S12 PGW S5 SGW S1-U eNB X2 eNB S11 UE eUTRAN EPC MME All IP S1-MME All New eNB – Evolved Node B; MME – Mobility Management Entity; SGW – Serving Gateway23 P-GW – Packet Data Gateway; UE – User Equipment
  • LTE Radio Interface Overview Key Features  Flexible Bandwidth Options  1.4 – 20 MHz  High Order Modulation and Coding  QPSK, 16 QAM and 64 QAM  Adaptive modulation and coding eNB  Robust OFDMA in the Downlink  Multi-Carrier Transmission  Good Multipath Performance  Suited to Advanced Antenna Techniques  Efficient SC-FDMA in the Uplink  Still good Multipath Performance  Decoding complexity in the eNB  More power efficient than OFDMA UE  Advanced Antenna Support  MIMO, 2x2, 4x4  Beamforming24
  • LTE Radio Interface Overview OFDMA and SC-FDMA OFDMA Frequency Frequency • Very Efficient • Good Multipath Performance • Simplified UE Receiver • Scalable OFDMA Time • Supports MIMO eNB Frequency UE Frequency SC-FDMA • Single Carrier /RB • Simplified UE Design • Lower power Consumption Time • No MIMO25
  • LTE Radio Interface Overview MIMO eNB UE • Downlink only • Spatial Multiplexing increases • 2 or 4 Transmit antennas at the data rate base station • Up to 4x increase in Capacity* • 2 or 4 Receive antennas at • Requires an Urban Environment the UE26
  • Services for LTE LTE Services • 3rd Party Content • Operator Managed Content • Video, Social Networking, WWW LTE Network • Is a transport/delivery network • Can manage content QoS • High capacity means many customers Content Management • IMS • Service Delivery Platform • LTE compatible with existing solutions27
  • Voice and LTE IMS Network • Call Session Control Function (CSCF) • Register VoIP Users • Processes VoIP Call • Manages VoIP Services IMS Signalling (SIP) IMS VoIP App EPC Media (RTP) LTE Network • Establishes Initial Bearer • Must maintain an “always on” connection • Transfers SIP Signalling to IMS • Routes the VoIP Media28
  • LTE DeploymentImplementation IssuesAll material is Copyright © Informa Telecoms & Media
  • Deployment Benefits of LTE  “Cost reduction more important than performance increases, initially” (Adrian Scrase, 3GPP)  Cost Saving and Capacity Improvements – Cost per Megabit – 3% of the cost of EDGE, 20% of the cost of 3G (STC) – Cost savings from lower OPEX, Self Configuring Network, Reuse of Assets – Urban Area payback 4-5 years for existing cellular operators – Urban Area payback 6-7 years for green-field operators  LTE Self Organising Network – 50% less CAPEX, 30% less OPEX (Huawei ME)  HSPA/HSPA+ may have some short term benefits – HSPA+ with MIMO will require considerable CAPEX (Du)  Race for LTE less urgent – WiMAX market position is clearer30
  • Evolution Paths to LTE Source; Informa Telecoms and Media31
  • Spectrum for LTE  LTE uses Wideband Channels – typically 5 MHz, 10 MHz  Large spectral allocations are required  Options are 1.4 MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz  Can use any IMT designated Spectrum  Spectrum re-farming?  Replace your existing 2G/3G with LTE?  Not an option for many operators  No harmonised spectrum  UE hardware Issues - Mobile equipment becomes difficult (expensive!) to build when so many bands are used  Roaming issues  Some Countries have not yet assigned any spectrum  This may delay the launch of LTE in some markets32
  • Possible LTE Frequency Bands 880-960 2110-2200 2500-2690 450 – 470 MHz MHz MHz MHz GSM Remains UMTS Most Likely Limited Foreseeable HSPA Deployments Availability Future TV DECT WiMAX TV UMTS GSM GSM WiFi 300 500 900 1500 1800 2500 3000 4000 MHz MHz 790 - 862 1710-2025 MHz 2300 – 2400 3400 – 3600 MHz Available MHz MHz Good Potential Not Suitable for 2 -3 Years Limited Equipment ? LTE Availability  These bands identified in addition to the existing GSM and UMTS bands  Local/Regional Regulation will manage the migration of technologies  These are IMT bands therefore LTE could be deployed33
  • Pros and Cons of the Frequency bands Frequency Advantage Disadvantage Comment Lower -Good propagation -Problems with Sometimes called -Good in-building interference, the Digital Dividend, Frequencies coverage -possible lower many TV services 400 – 900MHz -large cells possible capacity are still using this -may be cheaper to -Antennas are large band deploy Higher -Higher capacity -worse propagation 2.5GHz may still be designs possible -building penetration used to build mobile Frequencies -Smaller Antennas very high systems, but more 1Ghz – 4GHz -may result in high difficult, 3.5GHz the cost networks problems increase Lower frequency Bigger Radio Cell Lower Capacity 400MHz – 900MHz 1GHz – 4GHz Higher frequency Smaller Radio Cell Higher Capacity34
  • Example – London LTE Cell at 2.6 Ghz35
  • Example – London LTE Cell at 900 MHz36
  • LTE Launches by Frequency Band to 1Q 2012 Source: Informa Telecoms & Media37
  • What are the alternatives to LTE? HSPA/HSPA+  Might be closer for some than LTE  Use existing Spectrum  More “natural” roadmap in the short term  Solid Evolution Path (R6, R7, R8….)  Good Performance (20-40 Mbps +) WiMAX  Now more “fixed” than mobile  Good performance  May not be the most natural roadmap for cellular operators  Same underlying technology as LTE  Remember 802.16m is a 4G candidate38
  • Factors Affecting the Cost of LTE Positive  More Spectrally Efficient  Use of advanced antenna techniques  High order modulation  Fewer system Components  No RNC  Flatter Network Architecture  Smaller Base Station Components  Less power required  Remote Radio Head utilisation Negative  Cost of License  Increased Backhaul Capacity Requirement  Use of Ethernet over Fibre Technology in the Backhaul  E1/T1 is expensive  Backhaul still a major issue39
  • Share of Net Additions – North America40
  • LTE Subscribers by Region - Forecasts41
  • So where are we with LTE? Visit us At stand LTE Status Report 13 Q2 201242
  • Telecoms Academy tony.wakefield@informa.com43