Lighting as a Platform for Wireless Connectivity: Enabling Data Delivery via Light

Transcription

1 Lighting as a Platform for Wireless Connectivity: Enabling Data Delivery via Light IoT Lighting at Middle East Electricity March 5, 2019 Michael Rahaim Assistant Professor Engineering Department University of Massachusetts Boston

2 The Bright Idea What if the lights could relay information?

3 The Bright Idea What if the lights could relay information?

4 The Bright Idea What if the lights could relay information?

5 Outline The Wireless Ecosystem of Today and Tomorrow Ultra-Dense Wireless Networks and the Lighting Ecosystem Data Delivery to the Lights Data Delivery from the Lights The Lighting Infrastructure for end-user Wireless Connectivity IoT Devices and Sensor Networks High Speed Deployments for 5G and Beyond Coexisting Radio/Optical Wireless Deployments (CROWD) Deployments / Testbed Development

6 The Wireless Communications Ecosystem Consider the recent trends in wireless communications Link/Network Capacity Devices IoT Web Browsing News Feeds Internet Radio Video Calling Gaming Video Streaming HD Video Applications

7 The Wireless Communications Ecosystem Spectrum 4G 5G Network Density Spectrum Efficiency

8 Cell Radius (Feet) The Wireless Communications Ecosystem Large majority of capacity gains have come from Network Densification 280,000mi 2 Maritime Mobile Radio Service 1G Macrocell Systems 100, ,000 1, MJ / MK Mobile Telephone Evolution of cell size in wireless networks. 10,000mi 2 Metroliner Train Telephone 700mi 2 200mi 2 2.5G Microcells 50mi 2 PCS Microcells 2G Macrocell Systems Where do we go from here?? Modified from ZTE Technologies WWANs WLANs and Femtocells Ultra-Dense Wireless Networks

9 The Wireless Communications Ecosystem Where do we need ultra-dense wireless networks? Where can we deploy access points in these spaces? Stadiums Conference Rooms Coffee Shops Office Spaces Sports Arenas Casinos Lighting location is uniquely aligned with wireless demand

10 The Lighting Infrastructure and Ultra-Dense Wireless Networks Data Delivery: How do we get data densely distributed access points? Existing work primarily focused on delivering data for control Wireless is not ideal for backhaul when lights act as relay devices

11 The Lighting Infrastructure and Ultra-Dense Wireless Networks Data Delivery: How do we get data densely distributed access points? Wired Backhaul PLC, PoE, etc. Cost shift from AP to backhaul Shared use of the wired backhaul (lighting control and data) Wireless connectivity offers near-term benefit; but wired offers vast future potential

12 The Lighting Infrastructure and Ultra-Dense Wireless Networks There is precedent for Linking lighting and wireless communications Street light integration with small cells / WLANs Shared use of the backhaul network Shared use of infrastructure to mitigate backhaul cost WLANs in 3G/4G use of existing infrastructure Cost benefit to the cellular companies Directional wireless technologies for ultra-dense networks Wireless technologies for end-user access mmwave RF Communications Optical Wireless Communications Beyond data delivery to the lights Data delivery from the lights!

13 Optical Wireless Communication Optical Wireless Communications (OWC) mm Wave Spectrum Infrared UV 1km 100m 10m 1m 100mm 10mm 1mm 100μm 10μm 1μm 100nm 10nm 1nm 300kHz 3MHz 30MHz 300MHz 3GHz 30GHz 300GHz 3THz 30THz 300THz 3PHz 30PHz 300PHz Alexander Graham Bell s Photophone (1880) microwave Spectrum 780nm 380THz Visible Light Spectrum 400nm 750THz Visible Light Communication (VLC) is a form of OWC. So What is LiFi?

14 Optical Wireless Communication LiFi is a VLC system offering seamless network connectivity. LiFi is to VLC as WiFi is to RF

15 Low Rate Visible Light Communication Visible Light Positioning (VLP) Precise Indoor Localization Commercial application implementing information transfer via modulated light IoT and Sensor Networks Optical Camera Communication Added security to RF VLC photocell receivers

16 High Rate Visible Light Communication Data rates in excess of 1Gbps have been demonstrated Novel VLC / OWC techniques: Dimming Compatible Modulation Baseband OFDM Techniques Wavelength Division Multiplexing Multiple Input / Multiple Output (MIMO) VLC to Indoor Free-Space Optics (FSO) Early focus on point-to-point link capacity Challenge of purely OWC Networks: Providing coverage and accommodating mobility

17 Coexisiting Radio and Optical Wireless Deployments (CROWD Networks) Mobility Resource Allocation Intelligent Adaptation RF Coverage OWC Aggregate Capacity Open research questions exist at the system level

18 Deployments and Testbed Development Testbed Deployment at Boston University Testing capabilities for Multi-Cell VLC, Visible Light Positioning, RF/VLC HetNets, and more!

19 Deployments and Testbed Development

20 Deployments and Testbed Development

21 Summary Motivation: The Wireless Ecosystem 5G Ultra-Dense Wireless Networks and the Lighting Ecosystem The Lighting Infrastructure for end-user Wireless Connectivity Coexisitng Radio/Optical Wireless Deployments, or CROWD Networks

22 Thank You! Website: Ubiquitous Communications and Networking Lab Any Questions?

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