a Good pdf about LTE-Advanced


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a Good pdf about LTE-Advanced

  1. 1. August 2013 LTE Advanced— Leading in chipsets and evolution 1
  2. 2. LTE Advanced: Leading in chipsets and evolution 1 Brings carrier aggregation—first launch powered by Qualcomm SnapdragonTM 2 Brings more capacity out of small cells and enables hyper-dense HetNets 3 4 A key enabler to the 1000x mobile data challenge Continues to evolve and expand into new areas Device to device, backhaul, broadcast, higher bands and more 2
  3. 3. Different dimensions of improvements—most gain from HetNets LTE Carrier #3 Leverage wider bandwidth Carrier aggregation across multiple carriers and multiple bands LTE Carrier #1 LTE Carrier #4 Aggregated Data Pipe LTE Carrier #2 Leverage more antennas Downlink MIMO up to 8x8, enhanced Multi User MIMO and uplink MIMO up to 4x4. Coordinated multipoint (CoMP) MIMO Higher spectral efficiency (bps/Hz) Leverage HetNets With advanced interference management (eICIC/IC) Primarily higher data rates (bps) LTE Carrier #5 LTE Advanced Up to 100 MHz Small Cell Higher spectral efficiency per coverage area 2 (bps/Hz/km ) 3
  4. 4. First Carrier Aggregation launched June 2013—powered TM 800 by Snapdragon 4 Qualcomm Snapdragon is a product of Qualcomm Technologies Inc.
  5. 5. Carrier aggregation launched—key to enabling 150 Mbps Carrier aggregation is the first step of LTE Advanced Uplink 10 MHz + 10 MHz Enables 150 Mbps peak data rates for typical 10MHz + 10MHz deployments Downlink (Interband) 10 MHz Band X Band Y Band X World’s first launch powered by Qualcomm Technologies’ 3rd generation Gobi modem Snapdragon 800 8974 LTE Advanced DL LTE Carrier MDM 9x25 LTE Advanced DL LTE Carrier UL LTE Carrier Aggregated Data Pipe World’s first mobile device with LTE Advanced Carrier Aggregation powered by Qualcomm® Snapdragon™ 800 June 2013 Note: Snapdragon 800 includes 8974, which integrates our third generation Gobi LTE modem, but Gobi modems are also offered as a standalone modem product 5 Qualcomm Snapdragon and Qualcomm Gobi are products of Qualcomm Technologies, Inc.
  6. 6. Up to 20 MHz Up to 20 MHz Up to 20 MHz Up to 20 MHz Up to 20 MHz Higher peak data rates LTE Carrier #3 LTE Carrier #1 LTE Carrier #4 Aggregated Data Pipe Up to 100 MHz LTE Carrier #2 LTE Carrier #5 Higher user data rates and lower latencies for all users More capacity for typical ‘bursty’ usage1 Leverages all spectrum assets Carrier Aggregation—fatter pipe to enhance user experience 1 The typical bursty nature of usage, such as web browsing, means that aggregated carriers can support more users at the same response (user experience) compared to two individual carriers, given that the for carriers are partially loaded which is typical in real networks. The gain depends on the load and can exceed 100% for fewer users (less loaded carrier) but less for many users. For completely loaded carrier, there is limited capacity gain between individal carriers and aggregated carriers, 6
  7. 7. Carrier aggregation leverages all spectrum assets Balances load across carriers Aggregate fragmented LTE spectrum within a band or across bands to create a fatter data pipe Aggregate within or across bands (FDD or/and TDD)1 Better use of lower spectrum band’s wider coverage e.g. 800 MHz e.g. 10 MHz e.g. 2.6 GHz e.g. 10 MHz e.g. 700MHz e.g. 10 MHz LTE Carrier #3 LTE Carrier #1 LTE Carrier #2 LTE Carrier #5 Aggregated Data Pipe Carrier 2 Smal cell LTE Carrier #4 Aggregate unpaired spectrum for more downlink capacity—supplemental downlink Enhances HetNets with multiple carriers Supplemental Downlink (FDD) Macro Small cell Carrier 1 Example: Carrier 1 used for wide area macro coverage, but also by small cell, carrier 2 used by all nodes, but with lower power around macrocell. Frequency domain interference management (carrier aggregation) can be combined with eICIC (time domain coordination) interference mgnt 1Aggregation of either FDD or TDD from 3GPP R10 , aggregation of FDD and TDD within the same node and different nodes (multiflow) are 3GPP R12 candidates 7
  8. 8. Carrier aggregation increases capacity for typical network load Bursty data applications Carrier aggregation capacity gain Burst Rate (normalized) 6 2 10MHz Single Carriers 10MHz + 10MHz Carrier Aggregation User experience 5 Data bursts 4 3 2 Partially loaded carriers 1 Capacity gain can exceed 2x (for same user experience)1 0 0 Idle time 3 6 6 12 9 18 12 24 15 30 Load (Mbps) 1 Carrier aggregation doubles burst rate for all users in the cell, which reduces over-the-air latency ~50%, but if the user experience is kept the same (same burst rate), multicarrier can instead support more users for partially loaded carriers. The gain depends on the load and can exceed 100% for fewer users (less loaded carrier) but less for many users (starting to resemble full buffer with limited gain). Source: Qualcomm simulations, 3GPP simulation framework, FTP traffic model with 1MB file size, 57 macro cells wrap -around, 500m ISD (D1), 2x2 MIMO, TU3, NLOS, 15 degree downtilt 2GHz spectrum., 8
  9. 9. Qualcomm positioned to lead in LTE carrier aggregation Key to high data rates while maximizing use of fragmented spectrum 45+ band combinations are being identified in 3GPP Q2 2012 Q1 2013 Future 33 45 60+ CA combinations CA combinations CA combinations? 24 Inter-band 9 Intra-band 34 11 Inter-band Intra-band More spectrum > 20 MHz aggregation 3 carrier DL aggregation 2 carrier UL aggregation TDD + FDD aggregation 9 Components/configurations of the type(s) mentioned in this slide are products of Qualcomm Technologies, Inc. and/or its subsidiaries..
  10. 10. Advanced multiple antenna techniques for more capacity 10
  11. 11. More antennas—large gain from receive diversity Downlink 1.7x Diversity, MIMO (+ 2 x 2 MIMO) 1x NodeB 4 Way Receive Diversity Device 2 x 2 MIMO LARGE GAIN, NO STANDARDS OR NETWORK IMPACT MAINSTREAM COMMERCIAL Relative spectral efficiency Note: LTE Advanced R10 and beyond adds up to 8x8 Downlink MIMO (Multiple Input Multiple Output), enhanced Multi User MIMO and uplink MIMO up to 4x4. Simulations: 3GPP framework, 21 macro cells wrap-around, 500m ISD (D1), 10MHz FDD, carrier freq 2GHz, 25 UEs per cell, TU 3km/h, full-buffer traffic, no imbalance or correlation among antennas. 2x4 MIMO used for receive diversity gain of 1.7x compared to 2x2 MIMO, similarly 2x3 diversity provides a 1.3x gain over 2x2 MIMO 11
  12. 12. Leverage multiple antennas with fiber installations Coordinated Multipoint (CoMP) progression for more capacity and better user experience Coordinated beamforming Coordinated scheduling Remote Radio Head (RRH) Macro Joint transmission Remote Radio Head (RRH) Remote Radio Head (RRH) Same or different cell identity across multiple cells Central processing/scheduling (requires low latency fiber) 12 Note: CoMP enabled by TM9 or TM10 transmission modes in the device and network. Picture focuses on downlink CoMP techniques, CoMP also applies to the uplink
  13. 13. Small cell Range Expansion Higher capacity, network load balancing, enhanced user experience, user fairness It’s not just about adding small cells — LTE Advanced brings even more capacity and enables hyper-dense HetNets1 1By applying advanced interference management to HetNets, a.k.a eICIC/IC 13
  14. 14. 1X Small cell Range Expansion (eICIC/IC) Macro Only LTE R8 Macro+ 4 Picos with Range Expansion LTE Advanced 1.4X LTE R8 2.8X Macro+ 4 Picos Data rate improvement2 Increased network capacity and enhanced user experience 1By applying advanced interference management to HetNets. 2Median downlink data rate. Assumptions: 4 Picos added per macro and 33% of users dropped in clusters closer to picos (hotspots) : 10 MHz FDD, 2x2 MIMO, 25 users and 500m ISD. Advanced interference management: enhanced time-domain adaptive resource partitioning, advanced receiver devices with enhanced RRM and RLM1Similar gain for the uplink 14
  15. 15. More users benefit from small cells with range expansion Range expansion More users on small cell2 better macro offload Range Expansion LTE R8 82% Small cell 57% 37% Enabled By: Adaptive Resource Partitioning (eICIC)1 Advanced Receiver Devices with Interference Cancellation (IC) 6% 2 12% 4 26% 10 Number of Picos per Macro Cell Assumptions: TR 36.814, Macro ISD=500m, 100 antenna downtilt 25 UEs per Macro cell, uniform random layout, 10 MHz FDD, 2x2 MIMO. 1 And enhanced RRM and RLM to allow handover to weak cells, to maintain reliable link with weak cells, and to provide accurate feedback with resource partitioning. Standards name eICIC: Enhanced inter-cell interference coordination 2For uniform, random user distribution 15
  16. 16. Adaptive resource partitioning (eICIC)1 Advanced receiver devices (IC)2 Full backward compatibility (ABS)3 Advanced Interference Management (eICIC/IC) The Secret Sauce 1 eICIC (R10) and FeICIC (R11) stands for (Further) enhanced Inter Cell Interference Coordination 2IC (R11) stands for Interference Cancellation 3ABS (R10) is to continue to transmit overhead channels in ‘Almost Blank Subframes’ to support legacy devices 16
  17. 17. Adaptive resource partitioning (eICIC): Time Macro Small Cells Macro Small Cells Macro Small Cells eICIC (R10) stands for enhanced Inter Cell Interference Coordination (coordination in the time domain). Also need enhanced RRM and RLM to allow handover to weak cells, to maintain reliable link with weak cells, and to provide accurate feedback with resource 17 partitioning.
  18. 18. To discover Small Cells To enable higher data rates To enable full range expansion Advanced receiver devices with interference cancellation Cancelling overhead channels benefits all deployment scenarios, but most gain together with network interference coordination (eICIC) Device interference cancellation cancels overhead channels such as such as synch, broadcast and common reference signal(CRS). Performance requirements part of 3GPP R11 18
  19. 19. Our LTE Advanced testbed today—your network tomorrow Our Over-The-Air HetNet Macrocells and picocells in a co-channel deployment since March 2011 Demonstrating pico discovery and range expansion with mobility since 2012 Opportunistic Hetnets with full VoIP mobility demonstrated since 2013 Evaluating the design and features to realize the full benefits of heterogeneous networks 19
  20. 20. LTE Advanced is a key enabler to the 1000x mobile data challenge 20
  21. 21. LTE Advanced is a key enabler to the 1000x data challenge 1000x Continue to evolve LTE: Multiflow, Hetnets enhancements Opportunistic HetNets LTE Direct for proximity services LTE Broadcast Carrier Aggregation (TDD and FDD) Authorized Shared Access (ASA) Higher spectrum bands (esp. TDD) Hetnets with eICIC/IC interference management New deployment models, e.g. neighborhood small cells Note: neighborhood small cells and ASA are not covered in this presentation, see www.q ualcomm.com/hetNets and www.qual;comm.com/spectrum for more details. 21
  22. 22. ~37X SMALL CELL SMALL ~21X CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL ~11X CELL SMALL ~6X SMALL CELL SMALL CELL SMALL CELL SMALL CELL +16 Small Cells Capacity scales with small cells +32 Small Cells added 1 LTE Advanced with 2x Spectrum added SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL +8 Small Cells SMALL CELL SMALL CELL SMALL CELL +4 Small Cells SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL SMALL CELL LTE Advanced, showing what is possible now, add spectrum and improved techniques for gradual increase towards 1000x Roadmap to 1000x: Capacity scales with small cells deployed thanks to advanced interference management (eICIC/IC) 1 Assumptions: Pico type of small cell, 10MHz@2GHz + 10MHz@3.6GHz,D1 scenario macro 500m ISD, uniform user distribution scenario. Gain is median throughput improvement, from baseline with macro only on 10MHz@2GH, part of gain is addition of 10MHz spectrum. Users uniformly distributed—a hotspot scenario could provide higher gains. Macro and outdoor small cells sharing spectrum (co-channel) 22
  23. 23. Enhanced HetNets Tighter Wi-Fi interworking M2M enhancements LTE expanding into new areas Such as Opportunistic HetNets, Multiflow, next gen. advanced receivers Further enhancements—3GPP R12 and Beyond LTE Advanced continues to evolve and expand into new areas 23
  24. 24. HetNets: combining multiple cells and technologies WAN ‘Anchor’ WAN ‘Booster’ Wi-Fi ‘Booster’ Macro Small Cell Across carriers1, across FDD/TDD2 Improved offload to small cells 1 Across cells —multiflow2 Efficient network load balancing Carrier aggregation from R10 LTE within FDD or TDD. 2 Multiflow is a 3GPP R12 LTE candidate., as well as FDD and TDD aggregation. 3 RAN interworking across LTE, HSPA+ and Wi-Fi is a 3GPP R12 candidate. Interworking across technologies3 Improved mobility 24
  25. 25. HetNets: next generation advanced receivers To mitigate interference—even more beneficial in dense HetNets LTE advanced can cancel common signaling1 Next step for LTE advanced: further enhanced LTE receivers2 Inter cell interference Serving cell Interference Cancellation 1 Performance requirement added to 3GPP for cancellation of common signaling (PSS/SSS/PBCH/CRS) in Rel 10/11. 2 Broad study on UE interference suppression with & without network assistance in 3GPP R12 25
  26. 26. Dense HetNets: opportunistic small cells Reduces energy consumption Reduces interference to further improve capacity Possible today1 Device triggered small cells (on/dormant) 1 Dormant small cells triggered by the presence of active devices in the vicinity 26
  27. 27. Tighter Wi-Fi—3G/4G interworking Convergence of Cellular and Wi-Fi Infrastructure 1) Seamless Access— Passpoint/Hotspot 2.01 2) Operator Deployed Wi-Fi access managed via 3G/4G2 Combine Wi-Fi and 3G/4G 1 Passpoint is the WFA certified implementation of hotspot 2.0, (supported by QCA, Qualcomm Technologies, Inc.), which enables a simpler, secure and seamless access to Wi-Fi networks. 2 Such as more dynamic control of which traffic to offload to Wi-Fi through device centric and/or network centric solutions. Standards enhancements for RAN network centric interworking approaches considered for R12 and beyond. 27
  28. 28. Machine to machine communication enhancements Low data rate FURTHER 3GPP R12 ENHANCEMENTS SUCH AS: Small data size New low data-rate device category Infrequent transmissions /receptions Limited power source Bundling and long repetitions Low cost Long range New dormant state Reduced signaling Increased battery life 28
  29. 29. LTE evolving and expanding into new areas Same content ~3.5 GHz LTE Direct: integrated device to device discovery & communication for proximity services Backhaul solutions with LTE waveform line of sight, non line of sight, relays First step towards higher bands Enhancements to support much higher spectrum bands Dynamic LTE broadcast, also going into areas beyond mobile 29
  30. 30. Summary: Qualcomm LTE advanced leadership Standards Leadership Industry-first Demos A main contributor to key LTE Advanced features Major contributor for ITU IMT-Advanced submission Instrumental in driving eICIC/IC MWC 2011: Live HetNet Demo MWC 2012: Live Over-The-Air HetNet Demo with Mobility MWC 2013: Live OTA opportunistic HetNet Demo with VoIP Mobility. Authorized Shared Access (ASA) demo Industry-first Chipsets Third generation Gobi LTE modem launched June 13’ with carrier aggregation in Snapdragon 800 8974 LTE Advanced MDM 9x25 LTE Advanced Snapdragon 800 30 Qualcomm Snapdragon and Qualcomm Gobi are products of Qualcomm Technologies, Inc.
  31. 31. Questions? - Connect with Us www.qualcomm.com/technology http://www.qualcomm.com/blog/contributors/prakash-sangam BLOG @Qualcomm_tech http://www.youtube.com/playlist?list=PL8AD95E4F585237C1&feature=plcp http://www.slideshare.net/qualcommwirelessevolution http://storify.com/qualcomm_tech 31
  32. 32. Thank you Follow us on: For more information on Qualcomm, visit us at: www.qualcomm.com & www.qualcomm.com/blog ©2013 QUALCOMM Incorporated and/or its subsidiaries. All Rights Reserved . Qualcomm, Snapdragon, and Gobi, are trademarks of QUALCOMM Incorporated, registered in the United States and other countries. References in this presentation to “Qualcomm” may mean Qualcomm Incorporated, Qualcomm Technologies, Inc., and/or other subsi diaries or business units within the Qualcomm corporate structure, as applicable. Qualcomm Incorporated includes Qualcomm’s licensing business, QTL, and the vast majority of its patent portfolio. Qualcomm Technologies, Inc., a wholly-owned subsidiary of Qualcomm Incorporated, operates, along with its subsidiaries, substantially all of Qualcomm’s engineering, research and devel opment functions, and substantially all of its product and services businesses, including its semiconductor business, QMC. 32
  33. 33. A strong LTE evolution path 2013 FDD and TDD support Enhanced voice fallback (CSFB), VoLTE, LTE Broadcast (eMBMS) Rel -9 Rel -8 LTE DL: 73 – 150 Mbps1 UL: 36 – 75 Mbps1 (10 MHz – 20 MHz) 1Peak 2014 2015 Carrier Aggregation, relays, HetNets (eICIC/IC), Adv MIMO Rel -10 Realizes full benefits of HetNets (FeICIC/IC) Rel-11 2016+ LTE Direct, Hetnets enhancements, Multiflow, WiFi interworking, Rel -12 & Beyond LTE Advanced DL: 3 Gbps2 UL: 1.5 Gbps2 ( Up to 100 MHz) rates for 10 MHz or 20 MHz FDD using 2x2 MIMO, standard supports 4x4 MIMO enabling peak rates of 300 Mbps. 2 Peak data rate can exceed 1 Gbps using 4x4 MIMO and at least 80 MHz of spectrum (carrier aggregation), or 3GBps with 8x8 MIMO and 100MHz of spectrum. Similarly, the uplink can reach 1.5Gbps with 4x4 MIMO. Commercial Note: Estimated commercial dates. 33 Created 7/18/2013