1. Light Communications High Throughputs Use cases
May 2015
doc.: IEEE /0496r1
November 2017
Light Communications High Throughputs Use cases
Date:
Author:
Name
Company
Address
Phone
Olivier Bouchet
Orange
Michel Corriou
B-com
Marcin Brzozowski
IHP Microelectronics
Dominic O’Brien
University of Oxford
Jose Rafael Perez Aguiar
University de Las Palmas de Gran Canaria
Jose Garcia
Oledcom
Nikola Serafimovski
pureLiFi
Olivier Bouchet, Orange
Edward Au (Marvell Semiconductor)

2. Outline Virtual Reality use case Smart office use case
November 2017
Outline
Virtual Reality use case
Smart office use case
Stadium use case
Olivier Bouchet, Orange

3. Virtual Reality use case
November 2017
Virtual Reality use case
Olivier Bouchet, Orange

4. Evolution of VR HMD resolution
January 2016
doc.: IEEE /1472r0
November 2017
Evolution of VR HMD resolution
Resolution per eye
2560x1440
StarVR
1440x1600
Samsung Odyssey
1080x1200
HTC Vive
Oculus CV1
960x1080
Oculus DK2
Sony PSVR
640x800
Oculus DK1
2013
2014
2015
2016
2017
2018
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

5. Tunnel vision & screen door-effects
January 2016
doc.: IEEE /1472r0
November 2017
Tunnel vision & screen door-effects
What is ideal field of view and resolution ?
Human Visual Acuity :
10/10 = 1 arc min = 1/60 degree
Pixels can be distinguished at 1/60° degree
150°x130° -> 9000x7800 pixels per eye
And perhaps more with radial distortion due to lenses
~150°
~210°
~150°
The ideal VR/AR HMD :
Field of view : 2 x 150° x 130°
Resolution : 2 x 9000 x 7800 pixels
Frequency : at least 120Hz
Photon-To-Motion Latency : < 17ms
Vertical field of view ~130°
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

6. The VR interaction/display loop
January 2016
doc.: IEEE /1472r0
November 2017
The VR interaction/display loop
Future untethered HMD
Perspectives to handle high-def untethered HMD
Foveal based compression
Very high wireless bandwidth
Tracking
Rendering
Head
Movement
~470Gbps
< ~17ms
Zero latency Decoding
Zero latency Encoding
(ratio 1:4)
Timewarp
~120Gbps
VR Display
HMD side
Computer Side
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

7. Required bandwidth per resolution
January 2016
doc.: IEEE /1472r0
November 2017
Required bandwidth per resolution
Resolution per eye
Raw bandwidth
Low-latency compression bandwidth (1:4)
Wireless technology
640x480
@60Hz
842 Mbps
210 Mbps
802.11ac
960x1080
@90Hz
4,16 Gbps
1004 Mbps
802.11ad
1080x1200
5,2 Gbps
1,27 Gbps
1440x1600
9,26 Gbps
2,32 Gbps
2560x1440
14,82 Gbps
3,7 Gbps
802.11ad ?
3840x2160
@120Hz, HDR
55,6 Gbps
13,9 Gbps
???
9000x7800
470 Gbps
120 Gbps
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

8. Current wireless VR solutions
January 2016
doc.: IEEE /1472r0
November 2017
Current wireless VR solutions
TPCast
802.11ad
Latency: <2ms
KwikVR
802.11ac
Latency: <12ms
Immersive VR
802.11ad & ac
Up to 4K (lossy)
Latency: 1ms
NGCodec
802.11ad & ac
(lossy)
Latency: ??
Nitero
802.11ad
Latency: 1/100 ms
QuarkVR
???
Latency: ???
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

9. Use Case example with Light Communication (LC)
January 2016
doc.: IEEE /1472r0
November 2017
Use Case example with Light Communication (LC)
IP/MAC
Gbps Switch
OWC-7xTxRx
Optic spatial
diversity
IP/MAC
Gbps
VR Server
USB
TxRx
1Gbps
PmP
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

10. Use Case Target/Requirement
January 2016
doc.: IEEE /1472r0
November 2017
Use Case Target/Requirement
Room size: 10x10m
Nb Users: 10
Wireless link with Optical Wireless Communication (OWC)
Video streaming: 220 Gbps per user (8K per eye with 30 bits per pixels at 120 fps)
Latency: < 3ms for video stream transport
Multi-User
Multi Virtual Reality environnement
interoperability: Station X & Device Y
Tracking (Gyroscope, Accelerometer…)
Position: < 1 mm
Orientation: <1/10°
Energy Feed (from OWC Access Point to HMD)
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

11. November 2017
Smart Office use case
Olivier Bouchet, Orange

12. Smart Office Use Case Description
January 2016
doc.: IEEE /1472r0
November 2017
Smart Office Use Case Description
LC does not cause any interference with other RF technologies and the licence exempt spectrum along with the dense cell deployment, means that LC can be used to deliver link aggregation, releasing precious spectrum at the lower bands for other applications.
Radio Frequency (RF) communications in the lower spectrum cannot be deployed in areas that are particular sensitive to electromagnetic interference (EMI).
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

13. Smart Office Use Case Requirements
January 2016
doc.: IEEE /1472r0
November 2017
Smart Office Use Case Requirements
KPI
Requirement
Comments
DL Data Rate per user
25Mbps (up to 1Gbps)
Compressed UHD/4k video requires less than 25 Mbps today looking at the 5G PPP
UL Data Rate per user
Aim is to provide complete virtual desktop/collaborative working environment requiring constant connectivity. Therefore the uplink should be symmetric to the downlink.
Connection density
10 device / 10 m²
EU regulation requires for office space recommends 1 person per 10m². However, each person can be expected to have up to 10 devices.
DL Traffic Density
10 Mbps/m² - 10 Tbps/km²
Connection density of 1 user per 10m². DL/UL office: 20 Tbps/km²
UL Traffic Density
Mobility
Stationary / Pedestrian
Users are either stationary or slowly moving
Latency
10ms
The most critical issue is the sharing of real-time HD videos ensuring high quality user experience
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

14. November 2017
Stadium use case
Olivier Bouchet, Orange

15. Stadium Use Case Description
January 2016
doc.: IEEE /1472r0
November 2017
Stadium Use Case Description
Massive crowds concentrated, temporarily or not, users being stationary or slowly moving, watching HD videos, sharing contents on social networks, accessing / receiving information from servers/internet…
Stadium: a dedicated wireless technology is deployed in a stadium in order:
for fans to view replays available on the club website, with different viewing angles…, to share, with friends, on social networks, live videos/pictures taken in the stadium
for professionals of media to share videos/contents (with high quality level) with their editorial team
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)

16. Stadium Use Case Requirements
January 2016
doc.: IEEE /1472r0
November 2017
Stadium Use Case Requirements
NGMN 5G white paper
KPI
Requirement
DL Data Rate per user [Mbps]
25 – 50
UL Data Rate per user [Mbps] 50
Connection density [user/km²]
30000 (with peaks of )
DL Traffic Density [Tbps/km²] – peak value
3,75
UL Traffic Density [Tbps/km²] – peak value
7,5
Mobility
Stationary / Pedestrian
Olivier Bouchet, Orange
Edward Au (Huawei Technologies)