SWIG Beach MaMIMO Oct 2018 · actuators will be connected to the Internet • Low volume of...
Transcript of SWIG Beach MaMIMO Oct 2018 · actuators will be connected to the Internet • Low volume of...
Massive MIMO:
5G and Massive Machine to Machine
Type Communications
Professor Mark Beach (and colleagues)Communication and Networks Group,
University of Bristol, Bristol. UK
http://www.bristol.ac.uk/engineering/research/csn/
Sensors in Water Interest Group (SWIG)
IoT for the Water Industry, Wed 24th Oct 2018
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Summary
• 5G and why Massive MIMO
• Multiple Access through
Massive MIMO
• Test-bed architecture
• Field Trials exploring gains in
Spectrum Efficiency
• Mobility & Public Trials
• Spatial correlation
• User grouping
• Open Research Questions
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
5G: The Networked Society
• Broadband experience: everywhere; anytime
• Smart vehicles, transport & infrastructure
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
M2M & IoT in 5G
• A very large number of sensors and
actuators will be connected to the Internet
• Low volume of information transmitted
occasionally.
• Simple transceivers:
- low cost
- low power consumption
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
5G M2M (or E2E) Latency Requirements
• Autonomous Vehicle
< 5-10 ms
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• Augmented Reality / VR
< 5 ms to avoid cyber sickness
• Industry Control / Automation
< 0.5 ms
• Remote robotics / surgery
< 1 ms for haptic feedback
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
5G: The Networked Society
• Broadband experience: everywhere; anytime
• Smart vehicles, transport & infrastructure
Target Specs:• 10Gbit/s Peak, 100Mbit/s where ever needed
• X100 – x1000 Capacity
• X10 battery life
• Reduced Latency (0.5ms)
• 5G Requires• New Spectrum 66 Millimetre wave bands
• Enhanced Spectrum Efficiency .. Massive MIMO for sub-6GHz
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
What is Massive MIMO (MaMIMO) & Why?
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Basestation or Access Point
> 50 (M) antennas serving a few (K) users (simultaneously)
Simple Signal Processing, power and spectrum efficient (sub-6GHz)
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Some Clarity on Definitions on use of MaMIMO
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Millimetre Wave 5G Access:
Massive Arrays for
Beamforming Array Gain
Analogue Phase control
Sub 6GHz: Massive Arrays with
Signal Processing per element for
enhanced Spectrum Efficiency
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Conventional Cellular Radio9
Ultimate Spatial
Resolution
• Multiple users share same time, frequency or
code resources
Uplink 1 Downlink 1
Cellular View
Uplink 2 Downlink 2
Uplink 3 Downlink 3
Uplink k Downlink k
Frequency / Time
Frequency / Time / Code
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Massive MIMO and Capacity Gain
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Ultimate Spatial
Resolution
• Increased spectral efficiency and network capacity
• Accurate spatial multiplexing for multiple access
• Same Radio Channel, Same time (slot)
TimeSpace
Uplink Downlink
Uplink
Uplink
Uplink
Downlink
Downlink
Downlink
Cellular View
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
More than just beamforming
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
NI Based ‘BIO’ Massive MIMO test-bed
• 128 Programmable
Radio Heads
• 20MHz Bandwidth
• ‘LTE’ like interface
• 1.2 – 6.0GHz Carrier
• 3.51GHz used
• 4 Racks of 32 Radios
• Data consolidation
• Channel processing
• 24 Clients
• Massive MIMO signal
processing supporting
• 12 clients
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
First System Deployment (10th March 2016)
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• Client Separation 2.5 - 6 Wavelengths
• Equal Transmit Power
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Our first results (10th March 2016):
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Eigen
Structure
Individual Spatial Stream Rx Magnitude
Power Delay profiles
Frequency Domain profiles
12 streams of 256 QAM!
http://www.bristol.ac.uk/news/2016/march/massive-mimo.htmlCOST IRACON TD(16)0185 Paul Harris
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Facebook & Massive MIMO (13th April 2016)
• ARIES (Antenna Radio
Integration for Efficiency in
Spectrum)
• Rural wireless Internet
• Specifications & Efficiency
• 96 antenna element array
• 24 users
• 71 bits/s/Hz
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http://www.wired.com/2016/04/facebooks-massive-new-antennas-can-beam-internet-miles/
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
2nd Deployment (Wed 11th May 2016)
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22 users running 256 QAM in 20MHz Channel
Using same frame structure as before:
• 145.6 bits/s/Hz
• Sum rate of 2.915 Gbpshttp://spectrum.ieee.org/tech-talk/telecom/wireless/5g-researchers-achieve-new-spectrum-efficiency-record
http://www.bris.ac.uk/news/2016/may/5g-wireless-spectrum-efficiency.html
User
Inactive
User
Inactive
128 element (32 x 4)
dual polar patch array
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Mobility Trials and Spatial Correlation
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Mobility trials & Spatial Correlation
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Paul Harris et al, ‘Performance Characterization of a Real-Time Massive MIMO System With LOS Mobile Channels’
IEEE JSAC, Volume: 35 Issue: 6, pp1244 - 1253 , June 2017
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Massive MIMO Spatial Channels: User Mapping
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Group 1:
Users 1, 3, 6 and 7
Group 2:
Users 2, 4, 5 and 8
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Collaboration with BT
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http://www.bristol.ac.uk/news/2017/february/massive-mimo-trials.html
https://www.youtube.com/watch?v=tFhubkGlZBY
Paul Harris, Mark Beach, Simon Armour & Ian Mings, Cover Story, Microwave Journal, Sept 2017
Collaborate to Innovate 2017 Award, http://www.bristol.ac.uk/news/2017/september/massive-mimo.html
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Layered Realities Weekend 5G showcase
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Layered Realities Weekend 5G Showcase
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
DCMS 5G Testbeds & Trials Programme
• 5GIC (Uni Surrey), KCL and University of Bristol first
phase of UK 5G programme (£16M)
http://www.bristol.ac.uk/news/2017/july/5g-test-network.html
• Showcase at Mobile World Congress (MWC2018) http://www.bristol.ac.uk/news/2017/september/massive-mimo.html
• 5G Layered Realities Weekend (17th & 18th April 2018)http://www.bristol.ac.uk/news/2018/march/5gexperience.html
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Open Research Questions
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Scalability, Multi-cell – massive MIMO
(Pilot Contamination), Power Control
Integration using Software-defined networking (SDN)
Antenna Element Design, Polarisation,
Array Geometry, Planning Tools
Algorithm Optimisation: Dense Urban Vs Rural,
plus Specialist Deployments
U
E
1
U
E
2
Reduced
SINR
700MHz
Control
plane
3.5GHz
m-MIMO
Data-plane
Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Acknowledgements and Thanks to :• Academic Colleagues at Bristol: Andy Nix, Evangelos Mellios, Angela Doufexi & Simon Armour
• Post Graduate Students: Paul Harris, Wael Boukley Hasan, Siming Zhang, Henry Brice, Benny Chitambira, & Fred Wiffen
• Academic Colleagues at Lund University: Ove Edfors, Fredrik Tufvesson & Liang Liu, post graduates Steffan Malkowsky, Joao Vieira, Erik Bengtsson,B..
• NI Staff Leif Johansson, Karl Nieman Ian Wong & James Kimery
• BT Labs: Tim Whitley, Paul Crane, Ian Mings et al
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Communication Systems & Networks Group
University of Bristol © CSN Group 2018
Bristol / Lund Mobility Video
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http://www.bristol.ac.uk/engineering/research/csn/
https://www.youtube.com/watch?v=wPPMrr4rHmo