1. Telematics Protocols and Technologies
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2. Outline Introduction Trend: E  M  U Telematics
Services and Applications
Intelligent Transport System (ITS)
Techniques
CAN
CALM
Network Protocols
IPv6
Mobile IPv6
NEMO
Past Work
SIP-NEMO

3. Introduction Telematics: a compound word Generalized
The science of sending, receiving and storing information via telecommunication devices
Specialized
Systems used in automobiles that combine wireless communication
Telecommunication
Informatics +

4. Trend: E  M  U
Connection: ubiquitous
Device: small and light-weighted

5. Anytime, Anywhere, Any device
Trend: E  M  U
E-government
E-industry
E-society
E-Taiwan (2002)
Mobile services
Mobile life
Mobile learning
M-Taiwan
(2005)
Anytime, Anywhere, Any device
U-Taiwan
(2007)
Ubiquitous – Always on
Ubiquitous networked society

6. (Broadband Infrastructure, Dual-Network top the world)
Trend: E  M  U
Apps
Industry Development
Ubiquitous Networked Society(2007)
(Sensor Network, Network Convergence, Legislation)
(Information Technology Enabled Service)
M-Taiwan(2005~)
(Broadband Infrastructure,
Dual-Network top the world)
(Communication Industries)
e-Taiwan(2002~)
(Broadband to 6m households in 6 years; the most advanced e-Nation in Asia)
(Info Services)
Infrastructure
Fixed-line
Broadband
Wireless
Broadband
Ubiquitous
Network

7. Trend: E  M  U Network Environment Traditional Services WWW E-mail
FTP
Multimedia Services
Video on Demand (VoD)
Voice over Internet Protocol (VoIP)
Advance Services
Home Network
Intelligent Appliance
Digital Video Broadcasting (DVB)
Internet Protocol Television (IPTV)

8. Telematics
In-car Functions

9. Services and Applications
Telematics
Services and Applications
Remote
Control
Personal
Communication
Mobile
Business
Life
Information
Driving
Assistance
Telematics
Vehicle
Security
Mobile
Entertainment
Safety

10. Intelligent Transport Systems (ITS)
Traffic Management System

11. Intelligent Transport Systems (ITS)
In Taiwan

12. Examples

13. Standards
International Organization for Standardization (ISO) Transport Information and Control Systems (TC 204) Wide Area Communications/protocols and interfaces (WG 16)
Controller Area Network (CAN)
Vehicle bus
MOST Cooperation
Media Oriented Systems Transport (MOST)
Fiber

14. Standards All units inside a car can be connected via CAN or MOST.
Non IP-based

15. Standards
ISO TC 204 WG 16
Communications, Air Interface, Long and Medium Range (CALM)
IPv6

16. IPv6
New generation Internet Protocol
128 bits: enough IP addresses
IETF IPv6, 6man, and v6ops WGs

17. Mobile IPv6 / Network Mobility (NEMO)
Allow mobile users to move from one network to another one.

18. Mobile IPv6 / Network Mobility (NEMO)
To manage the mobility of a single user
IETF MIP4, MIP6, MIPSHOP WGs
Network Mobility (NEMO)
To manage the mobility of a group of users
IETF NEMO WG

19. Mobile IPv6 Components Home Agent (HA) Mobile Node (MN)
Correspondent Node (CN)
Home Address (HoA)
Care-of-Address (CoA)

20. NEMO Components
Mobile Router (MR)
Home Agent (HA)
Mobile Node (MN)
Local fixed node (LFN)
Visited mobile node (VMN)
Correspondent Node (CN)

21. NEMO Operations
Multi-angular route

22. NEMO Operations
If an MN performs route optimization

23. Mobile IPv6 / Network Mobility (NEMO)
Difference
Manageability
Advantage
Power saving
Low complexity
Few handoffs

24. Categories
Applying NEMO to Telematics

25. Due to the bi-directional tunnel Sub-optimal routing
Past Work
Due to the bi-directional tunnel
Sub-optimal routing
CN - (HAMR) - MN
High header overhead
Encapsulation & decapsulation
HA survivability
If the HA is crashed, it means that the tunnel is also crashed.
Long packet delay
Time for sub-optimal routing path
Time for encapsulation/decapsulation

26. SIP-based Network Mobility (SIP-NEMO)
Past Work
SIP-based Network Mobility (SIP-NEMO)
Use Session Initiation Protocol (SIP) instead of Mobile IPv6
Header Translation
No Tunnel
Route Optimization
No intermediate node, e.g., HA

27. Session Initiation Protocol (SIP)
Application control signaling protocol for establishing, maintaining and terminating multimedia sessions with more than one user.
A session means an exchange of data between an association of users.
IETF WGs
“sip” : Session Initiation Protocol
RFC 3261: SIP: Session Initiation Protocol (June 2002)
“sipping” : Session Initiation Proposal Investigation

28. Session Initiation Protocol (SIP)
SIP elements
SIP server
Registrar
User registration
Location update
Proxy server
Sending and routing requests to targeted SIP clients
Redirect server
Direct requests to another SIP server which may be closer to targeted SIP clients
SIP client

29. Session Initiation Protocol (SIP)
SIP Header

30. Session Initiation Protocol (SIP)
Pre-call
The MN acquires a new address prior to receiving or making a call.
The MN would re-register its new address to its SIP server.
Mid-call
The moving MN sends an updated session description to the corresponding CN.

31. Session Initiation Protocol (SIP)
Comparison between Mobile IP and SIP
SIP
Mobile IP
Application layer protocol
Network layer protocol
Indirect routing in IPv4
Encapsulation overhead
Authentication of redirection
IP stack needs to be changed.
Host/Terminal Mobility, Session Mobility, Personal Mobility, and Service Mobility
Host/Terminal Mobility

32. SIP-NEMO
Three types of SIP Back-to-Back User Agent (B2BUA)
SIP Home Server (SIP-HS)
SIP Network Mobility Server (SIP-NMS)
SIP Foreign Server (SIP-FS)

33. SIP-NEMO REGISTER replace INVITE replace add RECORD-ROUTE
MN’s Contact Address
MR’s URI
replace
MN’s Contact Address
MR’s Contact Address
add
MR’s URI
RECORD-ROUTE

34. sip-nms@visited. network. com.tw sip-nms@visited. network. com.tw
SIP-NEMO
(URI)
com.tw (Contact)
network. com.tw
(URI)
(Contact)
network. com.tw

35. SIP-NEMO Signal reduction
When a mobile network changes its point of attachment, the SIP-NMS sends
a REGISTER request to its SIP-HS
INVITE requests to all SIP-CNs

36. Future Works Multihoming
A mobile network has multiple paths to Internet.
Nesting
A mobile network is composed of several nesting levels.
NEMO + SIP-NEMO
Route optimization
Inter-Vehicle
Intra-Vehicle
NEMO or SIP-NEMO can only resolve vehicle-to-Infrastructure communication.
Telematics Applications

37. E-mail: chaohsien.lee@gmail.com Phone: +886-987-083803
Q & A
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