GB/T 31024.1-2014 English PDF (GBT31024.1-2014)

This Part of GB/T 31024 specifies the object communication relationship and dedicated short range communication reference architecture of the cooperative ITS, the main intelligent transportation system services that are supported by the dedicated short range communication, the requirements of the dedicated short range communication technology, the requirements of the dedicated short range communication equipment, the security requirements and time management, etc.

GB/T 31024.1-2014
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 35.100
L 79
Cooperative intelligent transportation systems -
Dedicated short range communications - Part 1:
General technical requirement
ISSUED ON: AUGUST 05, 2014
IMPLEMENTED ON: FEBRUARY 01, 2015
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
Introduction ... 4
1 Scope ... 5
2 Terms and definitions ... 5
3 Abbreviations ... 6
4 Object communication relationship and dedicated short range communication reference architecture ... 7
4.1 Cooperative ITS components ... 7
4.2 System reference architecture ... 8
5 Main supported services ... 8
6 Technical requirements for dedicated short range communication ... 10 6.1 General functional requirements ... 10
6.2 Technical requirements for the MAC layer and the physical layer ... 10 6.3 Technical requirements for the network layer ... 11
6.4 Technical requirements for the application layer ... 11
7 Technical requirements for dedicated short range communication equipment ... 12
8 Security requirements ... 13
8.1 General security ... 13
8.2 Data security ... 13
8.3 Privacy protection ... 13
9 Time management ... 13
Appendix A (Informative) Communication methods involved in the cooperative ITS ... 15
Cooperative intelligent transportation systems -
Dedicated short range communications - Part 1:
General technical requirement
1 Scope
This Part of GB/T 31024 specifies the object communication relationship and dedicated short range communication reference architecture of the cooperative ITS, the main intelligent transportation system services that are supported by the dedicated short range communication, the requirements of the dedicated short range communication technology, the requirements of the dedicated short range communication equipment, the security requirements and time
management, etc.
This Part applies to the design, development, operation, and maintenance of dedicated short range communication subsystem applications in cooperative intelligent transportation systems; it is the basis for formulating technical implementation standards, quality evaluation standards, and engineering standards for dedicated short range communication applications in cooperative ITS.
2 Terms and definitions
The following terms and definitions are applicable to this document.
2.1 Cooperative ITS
An intelligent transportation system that realizes intelligent coordination and cooperation between vehicles and infrastructure, vehicles and vehicles, and vehicles and people through information interaction between people, vehicles and roads.
2.2 Dedicated short range communication
The wireless communication method with limited communication distance
between vehicles and vehicles, vehicles and infrastructure, infrastructure and infrastructure, which is one of the basic communication methods in the field of intelligent transportation systems.
2.3 On board unit
a) Vehicle-assisted driving, which includes assistant driving and road
infrastructure status warnings:
1) Assisted driving: early warning of collision risk (especially at the intersection), wrong driving method warning, signal violation warning,
slow vehicle instruction, motorcycle approaching instruction, vehicle
remote service, pedestrian monitoring, collaborative automatic platoon; 2) Road infrastructure status warnings: vehicle accidents, road
engineering warning, traffic condition warning, weather conditions and
warnings, and infrastructure status abnormal warning.
b) Transportation safety, including emergency rescue requests and
responses, emergency notifications, emergency vehicle scheduling and
priority traffic, safety monitoring of transportation vehicles and drivers, overload and over-limit management, and safety protection of vulnerable groups of traffic.
c) Traffic management, including traffic regulations notification, traffic law enforcement, signal priority, guidance on the best speed of traffic lights, parking lot management.
d) Navigation and traffic information services, including real-time route guidance and navigation, construction areas, tolls, parking lots, transfers, traffic event information, flow monitoring, suggested itineraries, and
notification of points of interest.
e) Electronic toll collection, which includes charging users, in the means of transaction, for transportation-related expenses, such as road, bridge and tunnel tolls, road congestion fees, paid traffic information service fees, parking fees, and route identification.
f) Transportation management, including transportation administration
inspection, special transportation monitoring, fleet management, station management, etc.
g) Others, including vehicle software/ data configuration and update, vehicle and RSU data calibration, collaborative sensing information update and
transmission.
c) The capacity of concurrent end-users that are supported by the road side unit shall be greater than 128.
6.3 Technical requirements for the network layer
6.3.1 The network layer can be adapted to different physical layers. The network layer shall have backward compatibility to support systems such as electronic non-parking tolls and forward scalability.
6.3.2 The cooperative ITS communication application can fully utilize various network resources to meet the cooperative ITS application requirements under complex traffic scenarios, through business characteristics such as mobility, communication mode, authentication, processing mode, data rate, security, reliability, and interactivity.
Its main technical requirements are as follows:
a) Strong mobility support: the maximum speed of the supported terminal's movement is not less than 120 km/h; when the road side equipment
coverage area is crossed, the business continuity can be guaranteed;
b) Delay requirements: the end-to-end transmission delay of safety
emergency shall be less than 50 ms;
c) It can support multiple access technology requirements; the network layer and the application layer are relatively independent from the access layer technology. It can provide services to the network layer through multiple access technologies; for example, the electronic non-parking tolls and
dedicated short range communication system can use the same network
and application layer for information interaction with the business service platform;
d) It supports the diversity of transmission technologies; the network layer is relatively independent from the data transmission technology. For
example, the data transmission from the central subsystem to the RSU
can be transmitted through fiber optic network or twisted-pair, and the network layer is not affected by the underlying transmission technology; e) Quality of service (QoS) guarantee, which can establish priorities for services and have QoS identification capabilities to support the network's QoS guarantee mechanism.
6.4 Technical requirements for the application layer
The application layer mainly includes vehicle-to-vehicle communication
applications, vehicle-to-road communication applications, and other general through the signal coverage that is defined by rules, and stop repetition or cancel event message sending through a special event;
n) broadcast cooperation messages periodically and at a given frequency. 8 Security requirements
8.1 General security
Cooperative intelligent transportation dedicated short range communication systems shall adopt the necessary information security technology to ensure that the system's data security and user privacy are not leaked.
8.2 Data security
The data security of the cooperative intelligent transportation dedicated short range communication system mainly includes data storage security and data transmission security.
The system shall take necessary access control, confidentiality control, and integrity verification measures to ensure that data is not be stolen, forged, tampered with or destroyed during storage and transmission.
8.3 Privacy protection
The cooperative intelligent transportation short range communication system shall protect the privacy of all parties in the system on the premise of complying with relevant national laws and systems.
9 Time management
9.1 The time management support equipment maintains the global time
reference for timestamps data elements.
9.2 The time management support equipment will extract Greenwich Mean
Time from the receiver of the Global Navigation Satellite System, to synchronize the local real-time time, and add timestamps data at the end of the message formatting process.
9.3 The time management support equipment has the ability to maintain an accurate global clock.
9.4 The time management support equipment has the ability to calculate the maximum delay time during transmission.