5G Mobile Communications in the mm-wave spectrum - Opportunities and Challenges Mythri Hunukumbure-Samsung R&D Institute, UK

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1 5G Mobile Communications in the mm-wave spectrum - Opportunities and Challenges Mythri Hunukumbure-Samsung R&D Institute, UK 1

2 Why mm-wave for 5G? Simply not enough spectrum to satisfy the BW demands in lower bands. Mm-wave also opens opportunities for higher spatial re-use with highly directional channels and much smaller cell sizes. WRC-15 identified several key mm-wave bands for further global study Mm-wave communication will fundamentally change how a mobile user is supported by the APs. 2

3 What are the Challenges? Better understanding the mm-wave channel. 3GPP just finished their channel modelling work, but research needs to continue to fully capture the channel behaviour. The network architecture to support mm-wave (as non-stand alone, stand alone) systems. Optimized air interfaces (waveforms, channel coding, frame structure etc). Multi-antenna BF architectures, beam tracking/ aligning solutions. Modelling and tackling hardware impairments in the transceiver RF chains and in antenna designs. 3

4 mmmagic Project Overview Part of 5G PPP under the Horizon Research and Innovation Framework Program Partners: Samsung (Coordinator, WP5), Ericsson (Technical Manager), Alcatel-Lucent, Huawei (WP4), Intel (WP1), Nokia (WP3), Orange, Telefonica, CEA-LETI, Fraunhofer HHI (WP2), IMDEA Networks, Aalto University, University of Bristol, Chalmers University of Technology, TU Dresden, Qamcom, Keysight Technologies, Rohde & Schwarz Advisory Board: ANFR, BNetZa, FICORA, Ofcom, PTS, ETSI, Sony Mobile, BMW, U. Illemenau Project Duration: July 2015-June 2017 (+6 pro-bono months) One of the largest 5G PPP Phase I Projects, focusing on key technology components and architecture of 5G mobile communications systems operating between GHz Contacts: Maziar Nekovee (Coordinator) m.nekovee@samsung.com, Miurel Tercero (Technical Manager) miurel.tercero@ericsson.com 4

5 mmmagic Achievements so far Deliverables: 7 technical deliverables, downloadable from website 3GPP : 13 contributions to 3GPP SI on 5G ITUR/ECC: 3 contributions to ITU-R SG3 and ECC Plenary Software : open source channel model GHz & visualization tool implemented in BLENDER, open source PN model White papers: 2 WPs on mm-wave channel and architecture 5G PPP: WG Architecture, Spectrum, Evaluation, Vision contributor Scientific outputs :40+ research publications (accepted /submitted) Dissemination : 15+ workshops/keynote/panels organized/participated International visibility: Brooklyn 5G Summit (USA), IEEE 5G Summit (Europe), Global 5G Technology Summit (China), WWRF (China), NGMN (Canada), numerous IEEE flagship conferences 13/10/2016 5

6 5G Use Case Characterization, KPIs and Frequency ranges Use cases describe how, when and where end users can utilize a particular service. Take into account end user perspective of a service, identified KPIs and challanges are characterized by specific requirements. The use cases, the corresponding KPIs and the requirements selected in mmmagic directs us towards designing a 5G multi RAT technology. use case family visualization platform 6

7 Data Rate and BW Analysis of a 5G Use Case 5G immersive experience use case Applications of UHD, VR, mobile gaming to be supported. 100Mbps base line data rate with up to 20Gbps peak rate. Dense deployments in a 0.1km 2 area, with around 40 small cells supporting 1000 active users. The use case has been mapped to a real life scenario, Oxford St., London, the premier shopping area. 13/10/2016 7

8 Results What would be the typical data distribution in the 5G small cell? 4 user application types considered. Web browsing, content sharing, VR experience and UHD video. The statistical analysis of data rate is converted to BW requirement. Considering spectral efficiency=7.3, densification= GHz BW needed to satisfy 99% of active users, 860MHz needed to satisfy 95% of active users. The results are lower-bounds to requirements as low initial take-up of VR and UHD services are assumed in the study Presented at IEEE ICC 2016 Workshop on 5G RAN Design, May 2016, KL, Maleysia 13/10/2016 8

9 Measurements, Simulations and Initial Channel Model Measurement campaigns and simulations Measurement plan: more than 20 measurement campaigns in more than 8 frequency bands from 6 to 100 GHz till the end of the project 10 campaigns accomplished: street canyon, open square, outdoor to indoor (O2I), office, shopping mall and airport; dedicated measurements on human blockage, wall scattering, traffic impact and channel sounder validation Ray tracing results are available for the street canyon scenario (Daejeon, Bristol, Berlin) and for the open square (Helsinki) 13 contributions to 3GPP & Further contributions to ITU-R mmmagic initial channel model In line with the 3GPP-3D channel model methodology Parameter tables extended based on literature values: support of mm-wave (10 80 GHz), additional values for frequency dependence Scenarios: UMi street canyon and indoor, LOS and NLOS QuaDRiGa (Quasi-Deterministic Radio Channel Generator) used as reference implementation: available as open source MATLAB implementation All essential components of the 3GPP-3D channel model, but multiple extensions LBS NLOS Path Receiver Transmitter LOS Path Direction of Movement Measurement bands and scenarios Large antenna arrays Long-term time evolution 13/10/2016 9

10 of Bristol, UK, see for videos 13/10/

11 Signal Strength Viewed from TX RX direction RX1 RX2 RX3 RX4 [db]

12 UE height [m] z [m] mmmagic Blocking modeling at 15 GHz UE Power rel. to LOS [db] Truck position along street [m]

13 Diffuse scattering: specular component Direction of travel Area 1: Rough wall Area 2: Smooth wall Area 3: Window (smooth surface) 13/10/2016 University of Bristol 13

14 Multi-User Example CEA antenna 5 Users Simplified MRT to each user Strong interference between user 1 and 5 14

15 5G RAN Functions and Architecture Integration Concepts and solutions for 5G architecture. * D3.1 Initial concepts on 5G architecture and integration. 15

16 Waveform Design Frame Structure Initial Access A generic frame work for waveforms Important design KPI s Peak-to-Average-Power-Ratio (PAPR) Robustness against RF impairments and Doppler Compatibility with multi-antenna technologies Two waveform families Multi-carrier vs single carrier Preliminary evaluation available (2 publications) 5 TDD frame configurations An advanced beam codebook design Design KPI s Throughput Robustness to HW impairments and Doppler Latency Mobility support Candidates Separation of control and Data channels Self-contained structure Flexible TDD Design KPI s Access delay Access ratio Overhead Design principles: Coupling with BF (optimised code book design) Exploitation of context information Utilising sub-6 GHz network for signaling

17 Initial Access Schemes Analyzed overall initial access procedure An analysis of beam-scanning based broadcast Modelling of the broadcast signaling Simulations to obtain optimal number of beam sectors at different system setups Sweeping subframes A beam-based approach for common control is studied Sweeping subframes for downlink have been introduced, carrying all required signals and channels for the UE to perform cell search and read essential system information. Space-Time division (Sequential beams, TD) mm-wave AP Components of mm-wave initial access f1 f2 Space-Time-Frequency division (FD) P/2 P/2 t1 t2 t3 t4 Space-Time-Power division (PD) Different possible broadcast signaling mm-wave beam finding 17

18 Multi-antenna and Multi-node design Multi-antenna designs and schemes A wideband, low complexity scheme developed for hybrid beamforming in mm-wave access Multi-connectivity backhaul provision for moving hot-spots through macro cells and mm-wave small cells. Trade-off between beam width and probability of beam mis-alignment analysed for typical urban speed variances Optimising complexity / performance trade-off for massive antennam2m communications Multi-node designs and schemes Multi-connectivity based joint mm-wave/free space optical links. Multi-node coverage analysis with ray tracing data and node positions 13/10/

19 Hardware Impairment and Antenna Parameterisation Extensive analysis and modelling on Phase Noise (PN) The PN model code has been made available as open source. Included in 3GPP RAN1 contribution R Behavioural models for power amplifier nonlinearities, incl. phased array distortion analysis. Modelling antenna arrays upto 64 elements Single element based modelling any MxN array. Radiation patterns incl. coupling, s parameters. Combining with Quadriga allows directional channel responses. 13/10/

20 Conclusions mmmagic collaboration is progressing to develop and design new concepts for 5G mobile communications technology operating in the GHz range The developed 5G components in mmmagic are already being fed into 5G global standardization (3GPP) and WRC 19 preparatory work (ITU-R) mmmagic project is contributing to EC s positioning on 5G standards, spectrum and architecture, through active contributions to EC s 5G PPP initiative and 5G white papers Find out more at: EC funding under Horizon G PPP Program is acknowledged! 20

21 Millimeter Wave-Based Integrated Mobile Communications for 5G Networks (mmw5g) workshop 2 nd Edition General Chairs: Mythri Hunukumbure (Samsung), Maziar Nekovee (Samsung), Miurel Tercero (Ericsson) Main Topics: Mm-wave channel sounding and modeling Antenna design and characterization Advanced multiple antenna systems (including massive MIMO) Mm-wave beamforming techniques (Hybrid, Analog and Digital) Efficient transceiver architectures and design Advanced transceiver schemes for access, backhaul and self-backhaul Novel channel estimation techniques Paper submission: Papers should be submitted to the conference track (Workshop 6) at EDAS: by 15 October, Key dates: Paper Submission Deadline: 15 October, 2016 Notification of Acceptance: 15 December, 2016 Camera-Ready Submission: 12 January, /10/

22 Millimeter Wave-Based Integrated Mobile Communications for 5G Networks (mmw5g) workshop 2 nd Edition General Chairs: Mythri Hunukumbure (Samsung), Maziar Nekovee (Samsung), Miurel Tercero (Ericsson) Main Topics: Mm-wave channel sounding and modelling Antenna design and characterization Advanced multiple antenna systems (including massive MIMO) Mm-wave beamforming techniques (Hybrid, Analog and Digital) Efficient transceiver architectures and design Advanced transceiver schemes for access, backhaul and self-backhaul Novel channel estimation techniques Paper submission: Papers should be submitted to the conference track (Workshop 6) at EDAS: Key dates: Paper Submission Deadline: 15 October, 2016 Notification of Acceptance: 15 December, 2016 Camera-Ready Submission: 12 January,

23 THANK YOU! 23