LTE LTE-Advanced is the evolution of the official name for Further Advancements for E-UTRA, 2008 began in March, in May 2008 to determine the needs. It meets the ITU-R IMT-Advanced technology collection needs, not only the formation of the European 3GPP proposal for IMT-Advanced technology is an important source, or a backward-compatible technology, fully compatible with LTE, the evolution rather than revolution.
The Path to 4G: LTE and LTE-Advanced James Seymour Senior Director Alcatel-Lucent 4G Technology Roadmap - Hosted by 4G Americas Applications & Devices Driving Bandwidth Feature Phones Data Friendly Smartphones Tablet Computers One Feature Ph F Phones megabyte = one digital Voice Calls: Voice Calls: Voice Calls: Web Browsing: 4-11 MB/Hr 4 -11 MB/Hr 4-11MB/Hr 350MB book, 45 seconds of Web Browsing: Web Browsing: Web Browsing: Net Radio: music, 20 20 MB 30 MB 100 MB 140 MB seconds of Email: 20 MB Email: 50 MB Net Radio: YouTube Videos: medium 70 MB 150 MB quality YouTube Videos: Email: 100 MB video 50 MB 80 MB Email: 50 MB *high-end Month Total* netbooks or 185 MB laptops model hly g e about 30% higher 800 MB 1,900 MB (1.9GB) * Estimated Source: BusinessWeek (February 2010), Data: Internal Alcatel-Lucent Research 4G Technology Roadmap - Hosted by 4G Americas Smartphone User Profile for 4G MBps/month/user 3,000 Gaming 2,500 Web Browsing Audio Streaming 2,000 Downloads 1,500 All Video 1,000 Cloud (non-Video) 500 P2P SMS/MMS/IM/Voice 0 2010 2011 2012 2013 2014 2015 High Growth in Web, Streaming, Interactive Video Apps Data Usage per LTE user projected t grow f D t U j t d to to 2.5GB from 700MB t 2 5GB 4G Technology Roadmap - Hosted by 4G Americas Meeting the Fast Growing Wireless Data Capacity and User Experience Demands Broadband Capacity E2E IP Service / 4G/LTE/ LTE-Advanced Small HetNet Policy Management Cells 3G+ SON 2G WiFi Network Topology Evolution Leverage LTE Spectral Efficiency and New Spectrum Cost-Efficiency / QoE Cost Efficiency 4G Technology Roadmap - Hosted by 4G Americas Achieving the End-to-End Solution Subscriber Apps and Services MME HSS PCRF PGW IMS, eNodeB Mobile TV, etc. SGW Flexible LTE Field proven Application Device Radio Access Aggregation and gg g Core Network Prototyping & Service yp g Partnerships Options Transport Delivery Platforms LTE Baseband Unit SGW & PGW Service Router Aggregation Plug-in Remote head Router MME Small Cells / Microwave Specific PCRF HSS Deployments l l i Alcatel-Lucent is paving the way to new wireless b i i h i l d l business models. 4G Technology Roadmap - Hosted by 4G Americas Carrier Aggregation (CA) for LTE-Advanced Carrier Aggregation combines multiple LTE carriers Intra-band Intra band example: 40 MHz 20 MHz 20 MHz Carrier Aggregation combinations defined as non- release specific. Inter band Inter-band example: 40 MHz 20 MHz 20 MHz Freq CA Critical for meeting ITU IMT-Advanced Peak Rate Requirement (1 Gbps) 6 | August 2010 4G Technology Roadmap - Hosted by 4G Americas MIMO Enhancements for LTE-Advanced SM = Spatial Multiplexing RI = Rank Indication CQI = Channel Quality Indication PMI = Pre-coding Matrix Indication Decision Tree Rel-10 (LTE-Advanced) RS = Reference Symbol adds 8x8 DL and 4x4 UL SIMO 4x2, 4x4 MIMO 2x2, 4x2 or 4x4 Linear Array Diversity Array 1x2 or 1x4 Single Antenna A Port 5 MU-MIMO Dedicated RS Open Loop Closed Loop Dual Layer (Rel-9) RI, CQI, no PMI RI, CQI, PMI Port P t0 Single Stream Multi-Stream Single Stream Multi-Stream Common RS Rank 1 Rank 2-4 Rank 1 Rank 2-4 Rel-10 (LTE-Advanced) improves codebook/feedback Transmit Closed Loop Open Loop SM Closed Loop MU MIMO for MU-MIMO Diversity Di it Rank=1 R k 1 SM Precoding LTE-Advanced builds off the wide range of Rel-8/Rel-9 MIMO capabilities to improve peak rates and spectral efficiency i k d l ffi i 4G Technology Roadmap - Hosted by 4G Americas MU-MIMO Enhancement for LTE-Advanced MU-MIMO enhancements provide up to 50% spectral efficiency gain Dynamic switching between SU- and MU-MIMO supported y g pp Up to 2 layers per UE in MU-MIMO Enhanced CSI feedback structure and codebook design CSI feedback Enhanced MU-MIMO MU MIMO MU-MIMO Enhancements critical for meeting IMT-Advanced MU MIMO IMT Advanced DL spectral efficiency requirements 4G Technology Roadmap - Hosted by 4G Americas Co-ordinated Multi-Point (CoMP) Multiple Approaches p pp Interference Avoidance Network MIMO Potential 2x spectral efficiency gain , but complex Advanced forms of CoMP only provide ~2X spectral efficiency increase still need more cells to meet faster growing wireless data capacity demands 4G Technology Roadmap - Hosted by 4G Americas Where Small Cells Provide Gains 500x nsity or traffi increase 200x 75x Metro Cell ic 20x Indoor Home I d H Den 5x & Enterprise 1 Add Carrier on Macro Source: Bell Labs Modeling analysis 250 1,000 5,000 10,000 25,000 100,000 Hotspot Size (Area in Square Meter) Home, E t H i Enterprise and Metro Cells compliment the Macro Network d M t C ll li t th M N t k 4G Technology Roadmap - Hosted by 4G Americas Interference Management with Small Cells Frequency Selective Scheduling (FSS), Power Control (PC) and Inter-Cell Interference Coordination (ICIC) enables same carrier HetNet deployments for LTE Interference Pico Cell Macro eNB Control Data LTE Rel-8 capabilities such can manage LTE HetNet interference. LTE-Advanced features such as Carrier Aggregation (CA) and Enhanced ICIC CC1 CC2 (eICIC) will further improve same carrier HetNet performance for LTE High power High power PDCCH PDCCH- less UE on carrier 1 with control on carrier 1 Macro cell UE on carrier 2 with CA Avoids control control on carrier 1 channel interference PDCCH-less PDCCH Macro eNB UE on carrier 2 with control on carrier 2 UE on carrier 1 with Small cell control on carrier 2 Low power Low power LTE-Advanced techniques further help to manage control channel Interference. 4G Technology Roadmap - Hosted by 4G Americas LTE Small Cells/HetNets Performance Source: Bell Labs Research 3GPP Case I with Configuration 4a 1 Case1 3D - PL model 1 - PS4a - 30dBm pico TX power No Biasing 5000 O lll Overalll 4500 Macro only 0.8 Pico only 4000 ghput [Mbps] 3500 0.6 3000 F C.D.F Aggregated throug 2500 2000 0.4 1500 No Hotzone 1000 10 Hotzone with 0dB Bias 500 0.2 10 Hotzone with 3dB Bias 0 0 1 2 4 10 10 Hotzone with 6dB Bias Number of pico cells per macro cell 10 Hotzone with 9dB Bias 0 -2 -1 0 1010 10 Normlized User Throughput (bps/Hz) Key Assumptions: Macro: Outdoor RRH based on 3GPP Case1 (ISD = 500m, 2 GHz, 46 dBm), Small Cell: 30 dBm, 4a dropping criteria 60 UEs and constant number of small cells per macro; 2 UEs in 40m radius around each small cell; small cells and remaining UEs uniformly distributed, LTE Small Cell/HetNets provide significant capacity improvement critical for addressing the fast growing wireless data demands 4G Technology Roadmap - Hosted by 4G Americas Relays Type I (in band) Time division multiplex at relay C1 time 1 C1 time 2 C1 or C2 Donor eNB Relay node Type Ia (out-of-band providing RF isolation) (out of band C1 C2 C1, C2 or C3 Donor eNB Relay node Type Ib (in band, RF isolation) RF isolation at relay C1 C1 or C2 Donor eNB Relay d R l node Relays can provide backhaul solution where dedicated backhaul is challenging 13 | August 2010 4G Technology Roadmap - Hosted by 4G Americas Self Optimizing Network (SON) Innovations to continue through LTE-Advanced Release 8 Release 9 Release 10 & Beyond Load Self- Neighbor Cell Interference Handover & Coverage & E2E & Balancing Configuration/ Relation & Co-Ordination RACH Capacity HetNet Plug & Play auto Cell ID Energy Optimization Optimization Optimization ( ) (ICIC) Savings Plug & play Automated Inter-Cell Interference femto neighbor cell Cancellation based on inter-cell relation negotiation • Reduces Hand Over failure • Improves throughput/QoE • Performance increase in call set up Comprehensive SON solution, powered by our 3G experience and Bell Labs Research Bell Labs efforts injected into our wireless developments 4G Technology Roadmap - Hosted by 4G Americas Summary • Fast growing wireless data capacity demands due to smartphones and high growth in web, streaming and interactive video apps • LTE & LTE-Advanced coupled with small cells & relays will address these fast growing wireless data capacity demands • Carrier Aggregation and MU-MIMO enhancements are the key LTE-Advanced features for meeting IMT-Advanced requirements – CoMP has potential to provide significant further spectral efficiency gain with added complexity – Relays and continued SON evolution to support E2E and HetNet optimizations are additional LTE-Advanced features • Alcatel-Lucent is delivering market leading end-to-end LTE solution with smooth evolution to LTE-Advanced, paving the way to new business models 4G Technology Roadmap - Hosted by 4G Americas
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