GB/T 31024.3-2019 English PDF (GBT31024.3-2019)

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GB/T 31024.3-2019: Cooperative intelligent transportation systems -- Dedicated short range communications -- Part 3: Network layer and application layer specification
GB/T 31024.3-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 35.100
L 79
Cooperative intelligent transportation systems -
Dedicated short range communications - Part 3:
Network layer and application layer specification
ISSUED ON: MAY 10, 2019
IMPLEMENTED ON: DECEMBER 1, 2009
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 4 
4 Abbreviations ... 5 
5 Technical requirements of network layer ... 5 
6 Interactive data set of application layer ... 30 
Annex A (Informative) Classification and value of Protocol Type ... 104 
Annex B (Informative) Preferred AID port number allocation ... 105 
Annex C (Informative) MIB message ... 106 
Annex D (Informative) Example of source/destination address design for
adaptation layer ... 108 
Bibliography ... 110 
Foreword
GB/T 31024 consists of the following four parts under the general title Cooperative
intelligent transportation systems - Dedicated short range communications:
-- Part 1: General technical requirement;
-- Part 2: Specification of medium access control layer and physical layer;
-- Part 3: Network layer and application layer specification;
-- Part 4: Equipment application specification.
This part is Part 3 of GB/T 31024.
This part was drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by and shall be under the jurisdiction of the National Technical
Committee on Intelligent Transportation Systems of Standardization Administration of
China (SAC/TC 268).
Cooperative intelligent transportation systems -
Dedicated short range communications - Part 3:
Network layer and application layer specification
1 Scope
This part of GB/T 31024 specifies the technical requirements of network layer and
application layer for dedicated short range communication of cooperative intelligent
transportation system.
This part is applicable to the design and development of network layer and application
layer for dedicated short range communication of cooperative intelligent transportation
system.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB 5768.2 Road traffic signs and markings - Part 2: Road traffic signs
GB 14886 Specifications for road traffic signal setting and installation
GB/T 16262.1 Information technology - Abstract Syntax Notation One (ASN.1) - Part 1:
Specification of basic notation
GB/T 16262.2 Information technology - Abstract Syntax Notation One (ASN.1) - Part 2:
Information object specification
GB/T 16262.3 Information technology - Abstract Syntax Notation One (ASN.1) - Part 3:
Constraint specification
GB/T 16262.4 Information technology - Abstract Syntax Notation One (ASN.1) - Part 4:
Parameterization of ASN.1 specifications
GB/T 16263.2 Information technology - ASN.1 encoding rules - Part 2: Specification of
Packed Encoding Rules (PER)
GB 25280 Road traffic signal controller
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
dedicated short range communication
wireless communication method for short range communication among traffic elements
such as vehicles, infrastructures and pedestrians
3.2
dedicated short range communication management entity
a universal set of dedicated short range communication management services that
provides management interfaces for all data layer entities
3.3
management information base
an entity used to store application configuration and status information
4 Abbreviations
For the purposes of this document, the following abbreviations apply.
AID Application ID
DME DSRC Management Entity
DSA DSRC Service Advertisement
DSM DSRC Short Message
DSMP DSRC Short Message Protocol
DSRC Dedicated Short Range Communication
GNSS Global Navigation Satellite System
IP Internet Protocol
LLC Logical Link Control
LTE Long Term Evolution
LTE-V2X LTE Vehicle to Everything
MAC Media Access Control
MIB Management Information Base
SAP Service Access Point
TCP Transmission Control Protocol
UDP User Data Protocol
UPER Unaligned Packet Encoding Rules
5 Technical requirements of network layer
5.1 Network layer framework
The DSRC network layer framework of cooperative intelligent transportation system is
shown in Figure 1.
Note 1: The network layer consists of data sublayer and management sublayer.
Note 2: The data sublayer mainly comprises adaptation layer, IP and TCP/UDP, as well as DSMP of
cooperative intelligent transportation system. The IP protocol and the DSMP protocol are optional. The
data sublayer transmits both data streams between application layers and data streams between
different device management layer entities or between management layer entities and applications.
Note 3: The management sublayer mainly performs functions such as system configuration and
maintenance. It transmits management data streams between different devices by using the data
sublayer service. The DME of cooperative intelligent transportation system is a universal set of
management services, which provides management interfaces for all data sublayer entities, including
DSMP protocol.
Figure 1 -- DSRC network layer framework of cooperative intelligent transportation system
5.2 Technical requirements of data sublayer
5.2.1 General
The data sublayer in the DSRC network layer of the cooperative intelligent transportation
system comprises TCP/UDP, IP, DSMP and adaptation layer, wherein the IP protocol and
the TCP/UDP protocol are not within the definition of this part.
The IP data stream and the DSMP data stream are defined in the DSRC network layer of
the cooperative intelligent transportation system. The IP data stream is shown in Figure 2,
Application Layer 
Ma
na
ge
me
nt
Su
bla
ye
r 
DME 
DSMP 
Adaptation Layer 
Network Layer 
Access Layer 
Da
ta
Su
bla
ye
r 
and the DSMP data stream is shown in Figure 3.
Figure 2 -- IP data stream
Figure 3 -- DSMP data stream
5.2.2 Adaptation layer
The adaptation layer provides the transmission adaptation function between the
underlying access technology and the upper layer protocol stack. The adaptation layer
receives the DSMP data packet, the IP data packet, or the DME data packet sent by the
upper layer, distinguishes the underlying access technology used by the data packet to be
sent, and delivers the corresponding data packet to the bottom layer in line with the
corresponding access technology for transmission; or receives the data packet from the
bottom layer, distinguishes the upper layer protocol type to which the corresponding data
packet belongs, and delivers the data packet to the specified upper layer protocol stack.
The DSRC network layer services of the cooperative intelligent transportation system
shall support the unacknowledged connectionless LLC operation, subnetwork access
Application
Layer 
Adaptation
Layer 
Access
Layer 
Access
Layer