Toward 5G Deployment in 2020 and Beyond

Transcription

1 2016 NTT DOCOMO, INC. All Rights Reserved. Toward Deployment in 2020 and Beyond Takehiro Nakamura NTT DOCOMO, Inc.

2 Time Plan for and NTT DOCOMO, INC. All Rights Reserved x Commercial system development for in 2020 launch + launch WRC15 Workshop WRC19 Requirements Proposals Specifications Rel. 13 Rel. 14 Rel. 15 Channel Model SI Requirement SI Technology SI WIs Rel. 16 WIs

3 2016 NTT DOCOMO, INC. All Rights Reserved. Deployment Scenarios

4 2016 NTT DOCOMO, INC. All Rights Reserved. 4 Phased Realization will evolve by incorporating new freq. bands and technologies Future compatibility is key for system design to continue evolution Introduction of New RAT (Tight interworking with ) Existing frequency bands New bands licensed by 2019 Unlicensed bands? Peak: Several Gbps More higher & wider freq. bands +New bands licensed after 2020 More advanced technologies (e.g., Massive MIMO with higher number of antenna elements) Peak: Above 10Gbps Freq.

5 Frequency Deployment/Migration Scenarios In 2020, will be launched initially from areas, where higher performance is required, e.g., dense urban area Both new RAT (Phase I) and enhanced (e) RAT are introduced to realize tight interworking between lower and higher frequency bands In beyond 2020, deployment areas for are gradually expanded while introducing additional technologies and frequency bands (= +) (or -Advanced) cell can be continuously used as e cell for a long-time Stand-alone new RAT might be deployed in the future Before x 2016 NTT DOCOMO, INC. All Rights Reserved. New RAT e New RAT New RAT New RAT New RAT e e e e Urban Area Suburban/rural Area + New RAT Stand-alone Special use cases?

6 User data rate (Downlink) Data Rate Improvements Toward 2020 and Beyond Continuous improvement of user experienced throughput toward /+ 10 Gbps Gbps Mbps Mbps Mbps kbps kbps Data rate increase will continue (approx. 100x per 10 years) (quasi-moore law) 2016 NTT DOCOMO, INC. All Rights Reserved. WCDMA HSDPA Peak Average -Advanced Ave. ~2Mbps, Peak 14Mbps Ave. ~1Gbps Peak ~bps Ave. ~240Mbps, Peak ~600Mbps Ave. ~24Mbps, Peak 150Mbps + Ave. ~4Gbps Peak >10Gbps 6

7 2016 NTT DOCOMO, INC. All Rights Reserved. Key Technologies for 2020 Deployment New numerology with shorter TTI Wider bandwidth and low latency f t New RAT New RAT Lean radio frame Less inter-cell interference, energy saving, good forward compatibility (2020) (202X) Tight integration C/U-plane split (dual connectivity, CA) e/ new RAT (C/U-plane) New RAT (U-plane) NOMA on Further cellular enhancement with massive connectivity f OMA NOMA Intentional non-orthogonality f Well localized waveform Frequency Time Massive MIMO/ beamforming Cell range extension Improved spectral efficiency Flexible duplex with unlicensed spectrum (e.g. -assisted access) Licensed Band () Unlicensed Band (New RAT) f IoT related enhancements Low cost / Long battery life devices

8 Core network for 2016 NTT DOCOMO, INC. All Rights Reserved. EPC can host RAN EPC is well suited for embb and mmtc type traffic Existing infrastructure can be used and also allows for early introduction New Core can be defined if study proves it is beneficial E.g. for support of new services like ultra-reliable and low-latency communications But it should be supported in co-existence with (v)epc in the form of NW slicing Should allow for independent evolution of RAN and CN CN S1 (v)epc (v)epc slice S1 New New Core Core slices (e.g. (e.g. for for URLLC) URLLC) New I/F RAN DU DU X2 DU DU DU X2 DU Initial phase (around 2020) Later phase (around 202X?)

9 Lessons from WRC-15 and necessary actions It is becoming more difficult to achieve global/regional harmonization for frequency bands through the conventional ITU approach. i.e., IMT identification in ITU first, which is followed by mobile market development in the world Alternative mechanisms such as bi-lateral/multi-lateral collaboration among regulators, in particular those who are mobile-friendly and/or those in major markets (e.g., KOR, US, JPN), are essential. i.e., Mobile market development in major countries, which is followed by IMT identification in ITU and further market development in other countries. Mobile industry members should encourage those regulators to establish the collaboration towards early development and implementation NTT DOCOMO, INC. All Rights Reserved.

10 Study on Frequency Band Candidates Frequency band Below 6 GHz Bandwidth For embb Device availability GHz 400MHz GHz only Spectrum availability Europe US JPN KOR CHN for 4G GHz only GHz 400MHz? GHz Hz* Hz* Above 6 GHz 500MHz 200MHz 380MHz , GHz only Indoor only Not available above 5.72Hz Indoor only Not available above 5.72Hz Indoor only in Hz Indoor only Not available above 5.72Hz Hz 3,250MHz??? Hz, Hz Unlicensed band >2Hz is used for V2V FSS Hz 2,000MHz? *Unlicensed frequency bands, which are mainly used for Wireless LAN now NTT DOCOMO, INC. All Rights Reserved GHz ( 弊社分析 ) 10

11 Time schedule for deployment in NTT DOCOMO, INC. All Rights Reserved Requirements Proposals Specifications Standardization WRC15 WRC19 Rel. 13 Rel. 14 Rel. 15 Rel. 16 Technical SI WIs WIs Research Project EU Projects National Project in Japan MF PoC Trials NTT DOCOMO Trials Trials for key technologies System Tokyo NTT DOCOMO Commercial System development commercial system development commercial launch Enhancement to +

12 2016 NTT DOCOMO, INC. All Rights Reserved. Experiments

13 Experimental Trials w/ 13 vendors 2016 NTT DOCOMO, INC. All Rights Reserved. 14 experimental trials are being started since Q4 of 2014 Existing bands UHF bands Ex. 800MHz, 2GHz Exploitation of higher frequency bands Low SHF bands 3-6GHz High SHF bands 6-30GHz EHF bands > 30GHz Frequency Key devices/chip sets vendors System solution vendors Measuring instruments vendors

14 2016 NTT DOCOMO, INC. All Rights Reserved. 26 Real-Time Simulator Real-Time Demonstration of Performance and Its Enabling Technologies Application of at stadium as an example of a super dense deployment environment can achieve several 100Mbps per user Simultaneous download and streaming of 4K high resolution movie by several users ドコモ スタジアム <DEMO> vs. +: Macro cell (3 sector/macro cell, 20MHz@2GHz, 2 4MIMO)+Small cell (12 small cells/sector, 200MHz@Hz,128 4 Massive MIMO) System throughput of 400x for and beyond 1000x for + Real-time transmission and streaming of 4K high resolution movie

15 Real-Time Simulator 2016 NTT DOCOMO, INC. All Rights Reserved. 27

16 2015 NTT DOCOMO, INC. All Rights Reserved.