Sang Yub Lee is a senior researcher at the Embedded Software Research Center. The document discusses car connectivity technologies including MirrorLink and MOST Wireless (WOC). It provides details on the MOST-WOC network system which uses optical wireless communications to provide a 150Mbps data rate for seamless audio/video streaming in a synchronous network with excellent quality of service. Diagrams and specifications are given for the MOST-WOC system module, platform, and demonstration of transmitting media and control data between devices over MOST and wireless. The conclusion states that MOST-WOC can optimize streaming data transmission without communication ceasing in vehicle environments while reducing weight and ensuring reliability free of electromagnetic problems.

1. Sang Yub Lee
Embedded Software Research Center
Senior Researcher

4. Wired + Wireless
4
SMSC *MOST Forum 2011

5. Wired + Wireless
5
*MirrorLink Consortium 2014
 Car Connectivity - MirrorLink
 MirrorLink is based on a set of
well established, non-proprietary
technologies.
 It uses standard Internet
technologies (such as Internet
Protocol) for compatibility with a
wide range of devices
 The synchronous network
provides excellent Quality of
Service and seamless connectivity
for audio/video streaming

6. Wired + Wireless
6
 Car Connectivity – MOST Wireless
 proposed network system is
consist of MOST devices with
WOC module as an access device
in ring network
 The proposed MOST- WOC
network system which is linked
with MOST network system has
the same data rate as 150Mbps
 The synchronous network
provides excellent Quality of
Service and seamless connectivity
for audio/video streaming *WOC : Wireless Optical
Communications (MOST Wireless)

8. System Model
8
 Car Connectivity – MOST Wireless
 WOC I/F
• INIC (OS81110)
• MLB 6
 Data Processing :
• MLB 6
• IOCompanion (OS85650)
• I2C/I2S
 Data Routing
• I2C/I2S
• INIC(OS81110)

9. System Model
9
MOST Control and Packet
Frame on Air
MOST Control and Packet
Frame
MOST Packet Frame
MOST Control Frame
MOST Audio

11. 11
MOST Physical interface

12. 12
WOC Physical interface

13. 13
WOC Physical interface
 MOST-WOC System Module Spec.
 HW
• Wavelength 650nm
• Data Rate : 150Mbps
• Effective Range : 0.1m ~ 1.0m
• Optic lens : Spherical Lens
• MCU (32bit)
 SW
• Firmware based
• NetService v3.0
1WOC Optic Module
2WOC System Module

14. 14
WOC Physical interface
 MOST-WOC Platform Spec.
 HW
• CortexA9 Dual Core
• LPDDR 2G, eMMc 4G
• WQXA(2560x1600) Display Panel
• Companion IO : IOC
• INIC 2 Port
 SW
• Android Version 4.2.x
• Kernel 3.4.x
• ADB(Android Debug Bridge)
• NetService v3.0
1
2
WOC Optic Module
MOST Module
3 MOST-WOC linked Platform

16. 16
MOST-WOC Demonstration
• Front Side • Back Side
Media Data
Control Data
MOST Packet Data
MOST Control Data
Display Output Audio Output

17. 17
MOST-WOC Demonstration
 TEST Scenario
 H/H to WOC System Module
• MP4 Video file and Control
Signal
 WOC System Module to
MOST-WOC Platform
• MOST Packet Data and
Control Data
 MOST-WOC Platform to
Internal Processor
• MOST Control Data and
Audio output

18. 18
MOST wireless connectivity
Mirror Link MOST-WOC
Wireless Interference
Yes
(2.4GHz ISM)
No
Real time streaming service No Yes
In-Vehicle Network
connection
No Yes
Adaptation of Before Market - Yes
Adaptation of After Market Yes -
Data Rate
Fluctuating
150Mbps
(no MIMO)
150Mbps
RSE(Rear Seat Ent.) support
No
(only Head Unit)
Yes

20. 20
MOST wireless connectivity
 MOST-WOC Connectivity
 MOST-WOC can be optimized
streaming data transmitting
solution without ceasing
communication on vehicle
environment
 It can be satisfied with reducing
the weight and ensuring the
reliability for the free of electro-
magnetic problems
The MOST Seamless Car Connectivity
Solution