1. LC use cases & requirements for PAR/CSD
May 2015
doc.: IEEE /0496r1
November 2017
LC use cases & requirements for PAR/CSD
Date:
Authors:
Name
Affiliation
Volker Jungnickel
Fraunhofer
Dominic Schulz
Frauhofer
Pablo Wilke Berenguer
Anagnostis Paraskevopopulos
Ronald Freund
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Marvell Semiconductor)

2. November 2017
Abstract
This presentation highlights three use cases in which pilots with early adopters have been started recently and discusses the required key performance indicators.
Volker Jungnickel (Fraunhofer HHI)

3. Selected Use Cases for Light Communications
January 2016
doc.: IEEE /1472r0
November 2017
Selected Use Cases for Light Communications
© Ullrich F. Wende
Mobile Backhaul
Industrial Wireless
Public/Private Premises
© vm
© Alexandra Iakovleva
© mattjeacock
© pixone
© pidjoe
Selected pilots with end users in use cases that exploit the unique selling points of LC
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

4. Wireless Backhaul Pilot
January 2016
doc.: IEEE /1472r0
November 2017
Wireless Backhaul Pilot
P2P with up to 1 Gb/s data rate, latency ≤ 2ms
Rate-adaptive, easy alignment, low costs
Outdoor trials were conducted in parallel with commercially available 60 GHz RF unit
Optical Unit: m
No interference with RF
No license fees
High availability
Market Potential
Backhaul for 5G deployment
Networked streetlights
Mobile networks for big events
Wireless to the Home
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

5. Pilot Results of LC + RF for Wireless Backhaul
January 2016
doc.: IEEE /1472r0
November 2017
Pilot Results of LC + RF for Wireless Backhaul
5 months field trial (Dec/16 – Apr/17) over 100 m
Visibility is always >100 m, no link outage despite fog/sunlight
Optical link is faster 90% of the time, RF is little more robust
LC/RF Aggregation: Clear indication of diversity in bad weather conditions
100% availability  suitable for carrier-grade deployment of small cells
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

6. Volker Jungnickel (Fraunhofer HHI)
January 2016
doc.: IEEE /1472r0
November 2017
Target for PAR / CSD
To enable wireless backhauling, PAR / CSD should target the following technical requirement.
■Data rate: In the range from 1 Gbps to 10 Gbps
■Latency: in the range from 1 …5 ms at MAC SAP
■Tight integration of LC with RF insíde MAC/PHY
■Wavelength: Infrared light from 0.8 to 2 µm
■Duplex: TDD is better from complexity/cost perspective
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

7. Use Case 2：Industrial Wireless
January 2016
doc.: IEEE /1472r0
November 2017
Use Case 2：Industrial Wireless
Industrial OWC: high availability, low latency  use MIMO!
Use omni-directional optical Tx at mobile robot’s head, distributed Rxs
Li-Fi channel sounder (200 MHz BW, 6x8 MIMO measurements in real robotics environment
Minoru Komori (Ushio)
Edward Au (Huawei Technologies)

8. Volker Jungnickel (Fraunhofer HHI)
May 2015
doc.: IEEE /0496r1
Distributed MIMO
Setup
6 Tx at robots arm pointing to all directions
8 Rx at the fence of manufacturing cell
48 channels between all Tx and all Rx measured along mobile robots trajectory
Observations
SNR is low in wide-beam/wide bandwidth setups
Frontend design may differ from high SNR scenarios
Higher modulation index + lower bandwidth for enhanced SNR
Diversity-oriented MIMO for enhanced robustness
Slide 8
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Marvell Semiconductor)

9. Pilot Results on LC for Industrial Wireless
January 2016
doc.: IEEE /1472r0
November 2017
Pilot Results on LC for Industrial Wireless
MIMO measured along robots trajectory
Fast time variance due to blocked LOS
Spatial diversity creates robust link
High availability can be reached using MIMO/macro diversity
Fit well to low SNR and moderate data rate rate requirements
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

10. January 2016
doc.: IEEE /1472r0
November 2017
Target for PAR / CSD
■To enable industrial wireless, PAR / CSD should target the following technical requirement.
■Data rate 10 Mbit/s … 1 Gbit/s
■Latency: > 95% of UCs: < 5 ms, few UCs < 1 ms
■Availability: 100%  PHY/MAC support for MIMO
and tight integration with RF
■Wavelength: Probably better in IR: 0.8 to 1 µm
■Light flux: similar to industrial lighting
■Compatibility with Industrial Ethernet
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

11. Use Case 3: Public/Private Premises
January 2016
doc.: IEEE /1472r0
November 2017
Use Case 3: Public/Private Premises
LC for wireless access besides RF
Combination of illumination and hotspot
High requirements on mobile device side
Small form factor, low power consumption, low cost
Avaiable in large volumes  latest semiconductor technology
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

12. Pilot results in Public/Private Premises
January 2016
doc.: IEEE /1472r0
November 2017
Pilot results in Public/Private Premises
Distributed LC Access Points
LC Devices
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

13. January 2016
doc.: IEEE /1472r0
November 2017
Target for PAR / CSD
■To enable LC in public/privat premises, PAR / CSD should target the following technical requirement.
■Data rate 100 Mbit/s … 1 Gbit/s
■Wavelength: visible or infrared downlink µm, infrared uplink 0.8-1µm
■Mobility between distributed access points
■Multiuser support 3-5 users/access point
■Light flux: like ambient lighting in work areas
■Mobile devices with high performance, low energy consumption, small form factor, low cost
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)

14. Summary of Targets for PAR / CSD
January 2016
doc.: IEEE /1472r0
November 2017
Summary of Targets for PAR / CSD
■To enable LC for backhaul, industrial and public/privat premises, PAR / CSD should target the following technical requirement.
■Data rate 10 Mbit/s … 10 Gbit/s
■Wavelength: visible and infrared µm
■Light flux: like ambient lighting in work/private areas
■Availability: 100%  PHY/MAC support for MIMO
■Latency: > 95% of UCs: < 5 ms, few UCs < 1 ms
■Multiuser support 3-5 users/access point
■Tight integration of LC with RF
■Mobility between distributed LC and RF access points
■Mobile devices with high performance, low energy consumption, small form factor, low cost
Volker Jungnickel (Fraunhofer HHI)
Edward Au (Huawei Technologies)