Standard No.:	GB/T 45315-2025
English Name:	Technical requirements and test methods of vehicular information interactive systems based on LTE-V2X direct communication
Chinese Name:	基于LTE-V2X直连通信的车载信息交互系统技术要求及试验方法
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2025-02-28
Implemented on:	2025-2-28
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	42000 words
Translation Price(USD):	1260.0
Delivery:	via email in 1~5 business day

GB/T 45315-2025 Technical requirements and test methods of vehicular information interactive systems based on LTE-V2X direct communication 1 Scope This document specifies the system description, automotive grade environmental requirements, positioning and timing requirements, functional requirements, communication performance requirements and test methods of vehicular information interactive systems based on long term evolution vehicle to everything (LTE-V2X) direct communication. This document is applicable to vehicles of Categories M and N. Note: To avoid ambiguity, this document refers to the vehicular information interactive systems based on LTE-V2X direct communication as LTE-V2X system for short. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 28046.2-2019 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 2: Electrical loads GB/T 28046.3-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 3: Mechanical loads GB/T 28046.4-2011 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads GB/T 30038-2013 Road vehicles - Degrees of electrical equipment protection (IP-Code) GB 34660-2017 Road vehicles - Requirements and test methods of electromagnetic compatibility YD/T 3340-2018 Technical requirements of air interface of LTE-based vehicular communication. YD/T 3707-2020 Technical requirements of network layer of LTE-based vehicular communication YD/T 3709-2020 Technical requirements of message layer of LTE-based vehicular communication YD/T 3756-2024 Technical requirement of vehicle terminal for LTE-based vehicular communication YD/T 3848-2021 Test method of terminal for LTE-based vehicular communication YD/T 3957-2021 LTE-based vehicular communication - Technical requirement of security certificate management system 3 Terms and definitions, symbols and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 V2X vehicle to everything technology for vehicle to communicate with the outside world Note: The "outside world" refers to vehicles, pedestrians, clouds, infrastructure, etc. outside the vehicle. [Source: GB/T 44373-2024, 4.8] 3.1.2 long term evolution vehicle to everything; LTE-V2X technology for long term evolution vehicle to communicate with the outside world 3.1.3 direct communication communication performed directly by radio equipment via radio transmission Note: This document refers to the exchange of information between the vehicle and other equipment through the LTE-V2X direct communication interface. 3.1.4 test voltage voltage applied to the equipment under test during the test [Source: GB/T 28046.1-2011, 3.5, modified] 3.2 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. ABS: Antilock Brake System AID: Application ID BDS: BeiDou Navigation Satellite System BSM: Basic Safety Message CBR: Channel Busy Ratio DE: Data Element DF: Data Frame DSM: Dedicated Short Message DSMP: Dedicated Short Message Protocol DUT: Device Under Test GALILEO: Galileo Navigation Satellite System GLONASS: Global Navigation Satellite System GNSS: Global Navigation Satellite System GPS: Global Positioning System HDOP: Horizontal Dilution of Precision ID: Identity LTE: Long Term Evolution LTE-V2X: LTE Vehicle to Everything MAC: Media Access Control Address PC5: ProSe Communication 5 PDB: Packet Delay Budget PDCP: Packet Data Convergence Protocol PH: Path History PPPP: ProSe Per-Packet Priority RLC: Radio Link Control SN: Sequence Number SPDU: Secured Protocol Data Unit Tmin: Minimum operating temperature Tmax: Maximum operating temperature TCS: Traction Control System USmax: Maximum operating voltage USmin: Minimum operating voltage Ut: Test voltage UTC: Coordinated Universal Time 4 System description 4.1 System composition The LTE-V2X system enables real-time information interaction externally with other vehicles, roadside infrastructure, and vulnerable road participants through LTE-V2X direct communication technology, while internally it can collect and interact information with electronic/electrical system. The two commonly used LTE-V2X system function modules are shown in Figure 1. Figure 1a) is a schematic diagram of the LTE-V2X system function module built into the on-board positioning subsystem, and Figure 1b) is a schematic diagram of the LTE-V2X system function module external to the on-board positioning subsystem. Note: Vulnerable transportation participants include pedestrians, bicyclists and e-bikes. 4.2 Operating mode According to the operating conditions of the test objects, their operating modes are divided into four types, as shown in Table 1. Example 1: As shown in Figure 1a), the minimum function module includes on-board positioning subsystem, radio communication subsystem, on-board equipment processing unit, LTE-V2X antenna, and GNSS antenna. Example 2: As shown in Figure 1b), the minimum function module includes radio communication subsystem, on-board equipment processing unit, and LTE-V2X antenna.

Contents Forward 1 Scope 2 Normative references 3 Terms and definitions, symbols and abbreviated terms 4 System description 5 Automotive grade environmental requirements 6 Positioning and timing requirements 7 Functional requirements 8 Communication performance requirements 9 Test methods Annex A (Informative) Technical requirements and test methods for electromagnetic compatibility of LTE-V2X system Annex B (Informative) Key events trigger BSM message sending Annex C (Informative) Congestion control mechanism Annex D (Normative) Vehicle basic type and No. Annex E (Informative) Reference design of vehicle path history and route prediction Annex F (Normative) Vehicle azimuth zone division Annex G (Informative) Durability test Annex H (Informative) Vehicle antenna performance test site requirements Bibliography