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Elektrische Signalverarbeitung Dr. Fischer GmbH
ETSI TTCN-3User conference 2009
3 – 5 June 2009ETSI, Sophia Antipolis, France
Smart Communications for Intelligent Transport Systems
(SCITS) (SCITS) Approach for Testing
Dr. Hans-Joachim FischerESF GmbH
Early ITS
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
http://www.tc204wg16.de
CommunicationsAccess forLand
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
LandMobiles
- since 2002 -
CALM standards successfully validated within the CVIS project
http://portal.etsi.org
ETSI TCIntelligent
Transport
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
TransportSystems
- since 2007 -
Communication Scenario
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
ITS networking
ITS Ad Hoc
ITS Access
NetworkPrivate
AccessNetwork
ITS Domain
ITS Station Boundary
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
ITS Ad Hoc
Network ITS Station-Internal
Network
Gateway
AccessNetwork
Public
AccessNetwork
CoreNetworks
(e.g. Internet)
Generic Domain
ITS Station
t
Facilities
Applications An ITS station (ITS-S) is a logical or physical entity in a communication network, comprised of applications, facilities, networking & transport
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
Access
Networking &
Transport
Ma
na
ge
me
nt
Se
cu
rity
networking & transport and access layer components presented in figure 1, that operate within a bounded secure management domain
Blocks are interconnected either via observable interfaces or via SAPs.
ITS sub-systems
Roadside Host
Access Router
Roadside Gateway
Roadside ITS station
Boarder Router
VMS
12
3A
45
6B
78
9
* 0 #R
Personal ITS station
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
Vehicle Host
Mobile Router
Vehicle Gateway
ECU
ECU
Vehicle ITS station
Central Host
Border Router
Central Gateway
Central System
Central ITS station
ITS core
Mapping ITS-S
applicationCI
status
MMIITS-S
applications
Set of rules
Communication interfaces and applications are decoupled!
Based on rules and policies, functional requirements from ITS-S applications, and static and dynamic properties of communication interfaces, i.e. implementations of access technologies, ITS communication channels are assigned to ITS-S applications.
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
process requirement
list
status
list
SCITS
forwardingtables
SCITSCIs
assigned to ITS-S applications.
Abstractions have to be used!
An ITS communication channel is defined by a mapping of an ITS-S application via a selected networking & transport layer protocol to the best suited communication interface. Some of these mappings may be static in a given regulatory domain, others will be highly dynamic, making best use of redundant and complementary access technologies by means of horizontal and vertical handover procedures.
ITS standards
TC ITS WG1Facilities Layer
CEN / ISOITS Applications
TC
IT
S W
G2
Arc
hitectu
re &
Cro
ss-L
ayer
TC
ITS
WG
5
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
TC ITS WG4Access Layer
TC ITS WG3Networking &Transport Layer
TC
IT
S W
G2
Arc
hitectu
re &
Cro
ss TC
ITS
WG
5S
ecurityP
rofile
1
Pro
file
2
Pro
file
3
Pro
file
4
Pro
file
5
Pro
file
n
Challenges for testing
• Unknown number of different profiles.• Functionality of abstractions of elements.•Test of management / security – Interaction with OSI layers via non-observable SAPs.• Conformance tests for combinations of standards.• ...
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
• ...
→ Developers of base standards need a feed-back from experts on testing.
→ General approach for testing of SCITS and ITS needs to be developed.
→ General decision to use TTCN-3.
The end
ITS consultant
ESF GmbHHans-Joachim Fischer
Fichtenweg 9D-89143 Blaubeuren
08:48:48 AM 5.6.2009TTCN-3 user conference 2009
D-89143 BlaubeurenGermany
http://fischer-tech.infohttp://www.tc204wg16.de
http://[email protected]
phone: +49 7344 9191-88fax: +49 7344 9191-23