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R&D Activities for Future Mobile Communications

AFICT 2009 2009.12 Junichiro HAGIWARA Research Laboratories, NTT DOCOMO Inc. R&D Activities for Future Mobile Communications. Topics. Part I: DOCOMO’s Current Service and R&D Status of New Systems 3G/3.5G service 3G Long-Term Evolution (LTE) “Super 3G” system development

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R&D Activities for Future Mobile Communications

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  1. AFICT 2009 2009.12 Junichiro HAGIWARA Research Laboratories, NTT DOCOMO Inc. R&D Activities for Future Mobile Communications

  2. Topics Part I: DOCOMO’s Current Service and R&D Status of New Systems • 3G/3.5G service • 3G Long-Term Evolution (LTE) “Super 3G” system development • 4G LTE-Advanced technologies research Part II: DOCOMO’s Change and Challenge for New Growth • DOCOMO’s mid-term vision • Several examples of the challenge

  3. Part I

  4. Mobile Subscribers Penetration Rate Mobile Internet Access 3G Subscribers Mobile Communication Market in Japan 102.7 100 96.7 91.8 88.7 90 87.0 88.1 81.5 81 84.4 80 80 75.7 79.8 76 75.2 69.1 70 70 69.7 72 69.9 60.9 68 60 62.5 Subscribers (Million) 60 64 51.1 Penetration Rate (%) 60 50 51.9 55 50 44.6 41.5 40 31.5 48 40 34.6 30 30.4 41 30 20 33 16.7 20 25 10 7.2 ’97 ’98 ’99 ’00 ’01 ’02 ’05 ’03 ’04 ’06 ’07 (Mar.‘08) Fiscal Year Reference : Telecommunications Carriers Association

  5. Subscriber Migration from 2G to 3G in DOCOMO (forecast) million 86% Sept. 2008 2G:mova 50% Jun. 2006 Number of subscriber 3G launch Oct. 2001 3G:FOMA 2009 2008 2001 2003 2007 2004 2005 2002 2006

  6. Growth of Packet Usage in DOCOMO Flat-rate service on i-mode June 2004 Normalized Data Traffic per day per person (The value of October of 2001 is assumed 1.0.)

  7. 75M 802.16e 600M 802.11n 4thGeneration 3rdGeneration 2ndGeneration IEEE 802.11(WiFi) Analog modem/ADSL/FTTH IEEE 802.16a Trend in Communication Bandwidth 1G at Low mobility 1G 300M 4G Fixed network services Peak FTTH Data speed [bps] 100M 100M at High mobility 100M Super3G (LTE) 54M 54M 50M 802.11g 26M Peak 802.11a 14M 12M 10M 11M IEEE 802.11 802.11b 8M average 2~4M HSPA MAX sepc. 2M 1.5M INS Net1500 HSDPA&HSUPA 802.11 2M 1M ADSL ISDN Mobile network services 384k W-CDMA 100k 64k INS Net64 56K PHS 32k 28.8k 28.8K PHS 14.4K 9.6k 10k PDC Packet PDC 2.4k PDC 1k 06 08 10 90 92 94 96 98 00 02 04 Year

  8. HSDPA realize higher user data rate with 35 times and its terminals can meet increasing demand for more variety packet services. High Speed Downlink Packet Access(HSDPA)/3.5G HSDPA Rel.5 (Category 10) W-CDMA R99 35 times 384 kbps max.14 Mbps User data speed Modulation scheme 16QAM QPSK Coding rate 0.971 0.442 Code utilization 0.934 0.119

  9. High-level Objective To ensure the continuous and long-term growth of mobile communication industry To provide competitive system capability even in the 4G era Realization of excellent access which has no restriction caused by radio transmission To provide a smooth path to 4G introduction Technical requirements High data speed with Low latency and High Capacity Smooth migration with reasonable CAPEX and OPEX Smooth introduction of 4G S3G Super 3G (LTE/3.9G) 4G Spectrum 4G 4G Super 3G Long-term evolution of 3G to keep competitive capability HSUPA HSUPA HSDPA HSDPA R99 R99 3G Spectrum Wide spread in Start in DOCOMO Start in World market 2000 2005 2010 It will be recognized to be important that Super3G/LTE has an evolutionary path to 4G.

  10. 4G NodeB Super 3G/LTE Radio Access and RAN Architecture Core Network All IP Network Ready to plug-in 4G Radio Access MME/S-GW Change in Radio Access Technology (Air-Interface) only IP New RAN Architecture ・Low latency ・Low-cost simple architecture RNC 3G RAN IP Transport IP IP ATM eNB eNB S3G NodeB Node B Node B S3G Radio ・Low latency ・75M/300Mbps 4G Radio ・100M-1Gbps VoIP capable WCDMA (HSPA) 4G Spectrum 3G Spectrum 3G Spectrum Ultimate enhancement using new technology elements, e.g. OFDM, MIMO Super 3G focuses on PS domain eNB: evolved NodeB(Super3G BTS)

  11. Mobility New Mobile Access High Enhanced IMT-2000 IMT-2000 4G . Super 3G Enhancement New Nomadic / Local Area Wireless Access Low 1 10 100 1000 1 Gbps Peak Useful Data Rate (Mb/s) 100 Mbps Targets for IMT-Advanced (4G) • Recommendation ITU-R M.1645 Framework and overall objectives for the future development of IMT-2000 and systems beyond IMT-2000 Illustration of capabilities of IMT-2000 and systems beyond IMT-2000 Systems Beyond IMT-2000 will encompass the capabilities of previous systems New capabilities of Systems Beyond IMT-2000 IMT-Advanced Dashed line indicates that the exact data rates associated with Systems Beyond are not yet determined

  12. 2007 2008 2009 2010 2011 WP5D meetings ITU-R No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 No.9 No.10 Circular Letter to invite proposals Proposals WRC-07 Evaluation Consensus Specification SDOs Submission of candidate RIT Work Item ect. Technical specifications #38 #39 #40 #41 #42 #43 #44 #45 #46 #47 #48 #49 3GPP RAN WS 2nd WS LTE-Advanced Study Item LTE CR phase Schedule for IMT-Advanced Identified Spectrum Circular Letter ARIB sets up Radio I/F proposal WG. Study Item approval

  13. Consideration on 3GPP’s LTE-Advanced Requirements, Spectrum and Technology • Wider bandwidth up to 100 MHz • In order to achieve 1 Gbps data speed, spectrum bandwidth should be extended up to 100MHz. • Scalable bandwidth • The scalable bandwidth should be supported considering a variety of spectrum availability in each region/country and support of LTE terminals. • LTE based technologies with higher performance • For W-CDMA/LTE operators, IMT-Advanced should be LTE basis for smooth introduction on top. • The performance should be higher than that of LTE. • TR 36.913 “ Requirements for Further Advancements for E-UTRA (LTE-Advanced)” are based on the following concepts: • LTE-Advanced is an evolution of LTE • All relevant requirements of LTE are valid also for LTE-Advanced • LTE-Advanced shall meet or exceed IMT-Advanced requirements within the ITU-R time plan

  14. DOCOMO’s Research Activities for 4G • Oct. 2002: 100 Mbpsdata in Laboratory • May 2003: 100 Mbps data in Field Test • Aug. 2004: 1 Gbpsdata in Laboratory • May 2005: 1 Gbps data in Field Test • Dec. 2005: 2.5 Gbps data • Dec. 2006: 5 Gbps data 100 MHz

  15. Tx antenna #1 Turbo coding and data modulation Rx antenna #1 Data demodulation and turbo decoding #2 #2 Trans-mitted data Data demodulation and turbo decoding Turbo coding and data modulation #3 #3 Received data Serial-to-parallel conversion Data demodulation and turbo decoding Parallel-to-serial conversion Turbo coding and data modulation Signal separation #12 #12 Turbo coding and data modulation Data demodulation and turbo decoding Field Experiments on 5 Gbps Packet DataTransmission 5 Gbps Packet Transmission using 12-by-12 MIMO Multiplexing Base-station transmitter Mobile-station receiver

  16. Part II

  17. DOCOMO’s Mid-term Vision “Change and Challenge”

  18. DOCOMO’s Challenge: Service Evolution

  19. Personalization of Services

  20. Expansion of International Businesses

  21. Evolution of Video Services

  22. Summary • Current 3G services • The migration from 2G to 3G is ongoing. • DOCOMO launched many HSDPA terminals to meet increasing demand for packet data services. • 3G Long-term Evolution (LTE) “Super 3G” and 4G (LTE-Advanced) • Super3G/LTE has an evolutionary path to 4G • DOCOMO continue to contribute to activities for IMT-Advanced/LTE-Advanced. • Future Mobile Communication Service and System • DOCOMO challenge service evolution. • DOCOMO continue research for future wireless system.

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