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GB/T 37372-2019: Communication technology requirements for traffic data broadcasting
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Communication technology requirements for traffic data broadcasting
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GB/T 37372-2019
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Standard similar to GB/T 37372-2019 GB/T 37376 GB/T 37377 GB/T 37375 Basic data | Standard ID | GB/T 37372-2019 (GB/T37372-2019) | | Description (Translated English) | Communication technology requirements for traffic data broadcasting | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | R07 | | Classification of International Standard | 03.220.20; 35.240.60 | | Word Count Estimation | 14,158 | | Date of Issue | 2019-05-10 | | Date of Implementation | 2019-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 37372-2019: Communication technology requirements for traffic data broadcasting---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Communication technology requirements for traffic data broadcasting
ICS 03.220.20;35.240.60
R07
National Standards of People's Republic of China
Technical requirements for traffic data broadcasting communication
2019-05-10 released
2019-12-01 implementation
State Administration for Market Regulation
Issued by China National Standardization Administration
Table of contents
Preface Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Abbreviations 2
5 Overall framework 2
6 Technical requirements for communication network 5
7 Technical requirements for FM synchronization 6
8 Communication security technical requirements 6
9 Technical requirements for computer room 7
Reference 8
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is under the jurisdiction of the National Intelligent Transportation System Standardization Technical Committee (SAC/TC268).
This standard was drafted by. Highway Research Institute of the Ministry of Transport, Beijing CCCC Guotong Intelligent Transportation System Technology Co., Ltd., Qingdao Hisense Network Technology Co., Ltd.
The main drafters of this standard. Meng Chunlei, Cai Lei, Wang Xinke, Hao Liang, Yu Zhongteng, Cai Shengxi, Jiao Weiyun, Zhang Jiancang, Wang Qi, Wang Qilin,
Yin Jijun, Ma Yuchao, Wang Dongliang, Chen Weiqiang, Chen Jing.
Technical requirements for traffic data broadcasting communication
1 Scope
This standard specifies the overall framework of the traffic data broadcasting communication system, communication network technical requirements, and frequency modulation synchronization technology related to the transportation industry
Requirements, communication security technical requirements and technical requirements of the computer room.
This standard applies to the construction and application of traffic data broadcasting systems, and other industries can refer to the construction of traffic data broadcasting systems.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 22239 Information Security Technology Information System Security Level Protection Basic Requirements
GB/T 22240 Information Security Technology Information System Security Level Protection Rating Guidelines
GB 50174 Code for Design of Computer Room of Electronic Information System
GB 50689 Communications Bureau (station) lightning protection and grounding engineering design code
GA586 Risk level and safety protection level of important parts of key units in the radio, film and television system
GY5062 TV and FM radio transmission (rebroadcast) station (station) design specification
GY/T 154 Technical Specification for FM Synchronous Broadcasting System
GYJ34 Design Specification for Medium and Short Wave Broadcast Transmitting Station
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Traffic data broadcasting
The transportation department and the radio, film and television department jointly undertake, using the overlay network of satellite broadcasting and TV broadcasting or other independent data broadcasting channels,
Information technology and services that use digital technology to transmit data.
3.2
E1 link
Promulgated by the International Telegraph and Telephone Commission, it is used for the transmission of telecommunication-level services, a data transmission specification on physical lines, and the rate is
2048bit/s.
3.3
Program stream
A single data stream formed by combining (compounding) one or more elementary streams with a common time reference.
3.4
Road communication network
With high-grade highway communication facilities as the transmission backbone, it is a dedicated communication network for highway management and business departments and related enterprises.
Note. The road communication network includes conventional communication networks and emergency communication facilities. Those not specifically stated in this standard only refer to conventional communication networks.
3.5
public net
A network established and operated by the competent authority or a telecommunications operating agency approved by the competent authority to provide telecommunications services to the public.
3.6
Synchronous transmission
The data signal is sent with a synchronized clock beat. In a serial data stream, the relative position of each signal symbol is fixed.
Fixed.
3.7
Stand-alone base station
A base station with a receiving device and a transmitting device.
3.8
Combined base station
A multi-base station combination with one receiving device and multiple transmitting devices.
3.9
FM simultaneous broadcast
In a larger area, use two or more transmitters located at different locations to broadcast the same program on the same frequency
The broadcast form of content.
4 Abbreviations
The following abbreviations apply to this document.
5 Overall framework
5.1 Overall framework of traffic data broadcasting and communication technology
Figure 1 shows the overall framework diagram of traffic data broadcasting (hereinafter referred to as traffic broadcasting) communication technology.
Figure 1 Overall framework of traffic broadcasting and communication technology
5.2 Overall architecture of traffic broadcasting and communication technology
5.2.1 Architecture composition
The traffic broadcasting architecture consists of three levels. a national-level traffic broadcasting platform, a provincial-level traffic broadcasting platform, and a traffic broadcasting base station. Traffic broadcasting country
The family-level platform is composed of the national-level platform of the transportation department and the national-level platform of the broadcasting and television department; the provincial-level platform of transportation and broadcasting can be used by transportation.
The provincial platform of the transportation department is formed independently, or it can be jointly undertaken by the provincial platform of the transportation department and the provincial platform of the broadcasting and television department; the transportation broadcasting base
The station is composed of receiving device, transmitting device and base station management system.
The data stream includes traffic information, base station management information, data broadcast text information, broadcast control instructions, etc.
5.2.2 Platform functions
Platform functions should meet the following requirements.
a) The national-level platform of the transportation department is responsible for the collection and processing of traffic information, and sends traffic information and equipment management information to the Ministry of Radio, Film and Television
State-level platforms, forwarding program streams and broadcast control instructions issued by the national-level platforms of the radio and television departments;
b) The national-level platform of the radio and television department is responsible for the production of radio programs, information security review, and the launch and distribution of program streams;
c) The provincial platform of the transportation department is responsible for the collection and upload of traffic information and equipment management information, and forwarding the program stream and broadcast control instructions issued by the national platform of the transportation department;
d) The provincial platform of the radio, film and television department is responsible for the processing of traffic information on the provincial platform of traffic broadcasting, program editing, and the launch and distribution of program streams;
e) The national-level traffic broadcasting platform and the provincial-level traffic broadcasting platform send program streams and data streams to the traffic broadcasting base station.
The base station transmits after decoding and modulation.
5.3 Technical requirements for national platforms of traffic broadcasting
The national-level traffic broadcasting platform shall meet the following requirements.
a) Send traffic information and equipment management information to the national platform of the radio and television department through the communication link, and accept the national
Broadcast program streams, text data and broadcast control commands sent by the platform;
b) There are at least two communication routes for data exchange with the national platform of the radio and television department, and the communication link can use satellites
Links, road communication networks or public networks, etc., should be safe, stable and unobstructed;
c) It has the functions of live broadcast and voice connection;
d) Establish a rapid data review mechanism to ensure the timeliness of data processing.
5.4 Technical requirements for provincial-level platforms of traffic broadcasting
The provincial traffic broadcasting platform should meet the following requirements.
a) Forward the program stream and data stream issued by the national platform to the base station under its jurisdiction in real time, and at the same time manage the traffic information and equipment of the base station under its jurisdiction.
Upload management information to the national platform;
b) It has a voice connection function, and when the conditions are ripe, a live broadcast room can be set up to directly conduct live broadcast activities;
c) The provincial-level platform of the transportation department with live broadcast function directly forwards the broadcast program stream to the base station under its jurisdiction in real time,
Upload live broadcast working status on the national platform of the department;
d) The provincial platform that cooperates with the provincial platform of the radio and television department can send traffic information and base station management information to the radio and television through the communication link
Departmental provincial platform, accepting the program stream, text data and broadcast control instructions of the provincial platform of the radio and television department;
e) There are at least two communication routes for data exchange with the provincial platform of the radio and television department, and the communication link can use the satellite chain
Road, highway communication network or public network, etc., should be safe, stable and unobstructed;
f) Establish a rapid data review mechanism to ensure the timeliness of data processing.
5.5 Technical requirements for traffic broadcasting base stations
5.5.1 Base Station Type
Traffic broadcasting base stations are divided into independent base stations and combined base stations. Independent base stations are suitable for plain areas, and combined base stations are suitable for mountainous areas and tunnels.
5.5.2 Communication requirements
The communication of the traffic broadcasting base station shall meet the following requirements.
a) It has at least two independent transmission routes for receiving to ensure reliable signal reception;
b) Base station management information transmission adopts IP network, including Ethernet, wireless network, etc., and the bandwidth is not less than 10M;
c) Combined base station program stream transmission adopts optical fiber link transmission, and reserve optical fiber for backup. Combined base station management information can use highway
Communication network or public network transmission;
d) The layout of the poles of the traffic broadcasting base station shall be implemented in accordance with the regulations of GY5062.
5.5.3 Device interface
The equipment interface of the traffic broadcasting base station shall meet the following requirements.
a) The base station management information acquisition unit provides RS232 interface, RS485 interface, and 10/100M Ethernet interface. Built-in WIFI module
With the communication module, the terminal can access the Internet through mobile communication data services, including no less than 4 RS232 interfaces and no less than 2 RS485 interfaces;
b) The decoder has the ability to receive E1, ASI, and DVB-S signals at the same time, and can automatically switch;
c) Encoder supports 1-channel or 2-channel AES/EBU digital audio signal input, supports external time stamp (1PPS), frequency stamp
(10MHz) input, with remote monitoring port RS232 interface or RS485 interface, ASI output conforms to DVB-ASI standard;
d) The decoder of the traffic broadcasting base station system should be compatible with the encoder of the provincial-level traffic broadcasting platform.
6 Technical requirements for communication network
6.1 General requirements
The communication network technology should meet the following general requirements.
a) The ground communication link satisfies the transmission requirements of program stream, text data, broadcast control instructions, base station management information and traffic information.
The link realizes program flow and control command transmission;
b) The network transmission system provides uninterrupted services 7×24h to ensure the normal operation of the network, and the information security level protection should meet
The relevant regulations of GB/T 22240.
6.2 Communication network of the national-level traffic broadcasting platform and the provincial-level traffic broadcasting platform
The communication network of the national-level traffic broadcasting platform and the provincial-level traffic broadcasting platform shall meet the following requirements.
a) The national-level traffic broadcasting platform distributes program streams and data streams to the provincial-level traffic broadcasting platform;
b) The traffic broadcasting provincial platform uploads traffic information, base station management information and other data streams to the traffic broadcasting national platform;
c) Priority is given to road communication network transmission between the national-level platform and the provincial-level traffic broadcasting platform, and the road communication network does not have the conditions
In this case, public network transmission can be used.
6.3 Provincial-level traffic broadcasting platform and traffic broadcasting base station communication network
The provincial traffic broadcasting platform and the traffic broadcasting base station shall meet the following requirements.
a) The communication network realizes reliable transmission of data streams and program streams;
b) The highway communication network is preferentially used between the traffic broadcasting provincial platform and the traffic broadcasting base station, and the road communication network does not have the conditions.
Under the circumstances, public network transmission can be used;
c) The highway communication network should provide an E1 link and an Ethernet 10M bandwidth interface. The E1 link is used to transmit program streams.
Network 10M bandwidth interface to transmit data stream;
d) The communication interface of the traffic broadcast provincial platform meets the demand for the number of traffic broadcast base stations and has the network convergence function;
e) See 6.5 for public network requirements.
6.4 Highway communication network
The road communication network should have at least two routing switching methods. When the communication equipment in the communication network fails, it can pass the set switch
Switch the route automatically and manually.
For transmission through highway communication network, SDH transmission network can be selected first for networking. If conditions are not available, IP network and optical fiber can also be selected for separate networking.
6.5 Public network
The public network should meet the following requirements.
a) Ensure that the base station management information transmission requirements are met when using the public network;
b) Priority to use the E1 link of the public network, when the E1 link is not available, the IP network or fiber resources can be used;
c) The public network link terminal directly enters the computer room and provides an interface corresponding to the broadcast system;
d) The public network guarantees interconnection with the highway communication network.
6.6 Satellite transmission
Satellite transmission should meet the following requirements.
a) The working frequency band of satellite communication chooses C band (3.7GHz~4.2GHz) and Ku band (11.7GHz~12.75GHz);
b) The microwave station of the upper program is configured with no less than two different routing signal sources for each program, and the microwave station of the lower program is
No. Use unit to output two signals.
7 Technical requirements for FM synchronization
FM synchronization technology should meet the following requirements.
a) There are manual switching and automatic switching functions between multiple communication links of the same traffic broadcasting base station;
b) In a hybrid transmission network of ground communication and satellite communication, the maximum sum of the time required for the signal to pass through the transmission network to each transmission site
The difference between the minimum value does not exceed 1s;
c) When using FM synchronous broadcast technology, reasonably design the delay indicators of each component in the traffic broadcast communication system to ensure that adjacent
The time delay and stability of the base station transmitting signal meet the requirements of GY/T 154;
d) The traffic broadcast communication system has the function of automatic delay compensation, and the delay range that can be resisted is greater than the signal passing through the transmission network
The maximum time delay to each launch site;
e) When the delay changes due to link switching, route change, device restart, interface plugging and unplugging, etc.,
The delay automatic compensation function of the base station receiving device should have an adaptive adjustment function;
f) When different equipment composes a traffic broadcast communication system, each equipment has compatibility and meets the above synchronization technical requirements.
8 Communication security technical requirements
Communication security should meet the following requirements.
a) The safety of the traffic broadcasting and communication system meets the requirements of GB/T 22239 safety grade protection regulations;
b) A trusted interconnection mechanism is established between systems of different security levels, and the establishment of the interconnection mechanism is based on the security of higher-level systems or security domains.
Full protection requires the setting of access control policies and other security policies, and does not cause security vulnerabilities due to differences in protection between high-level systems and low-level systems;
c) The use and management of passwords involved in security protection shall be implemented in accordance with the relevant regulations and standards of the National Commercial Password Management Regulations;
d) Perform credible authentication and verification between systems, establish secure channels, and safeguard the legality and authenticity of the identities of all parties;
e) Implement data transmission protection and security protection to ensure the integrity and confidentiality of program data, traffic data, monitoring data and instruction data transmission;
f) The security protection system has audit and traceability functions, and the system itself can resist illegal attacks;
g) The maximum concurrency and transmission bandwidth of the security protection system center meet the requirements of all base stations in the area to work normally at the same time,
The time delay caused by security protection should not affect the broadcast effect of FM synchronous broadcast.
9 Technical requirements for the computer room
9.1 Computer room environment
The computer room environment should meet the following requirements.
a) The temperature, humidity, dustproof, electrostatic protection, grounding, wiring and external environment of the computer room meet the relevant regulations of GYJ34 and GY5062.
Meet the requirements for safe operation of equipment;
b) The safety precautions of the computer room comply with the relevant regulations of GB 50174 and GA586.Set up videos on key parts of the computer room, etc.
Security monitoring system, antenna area monitoring system with intrusion alarm function.
9.2 UPS power supply
The transmission control equipment and signal source equipment should be powered by UPS, and the backup time of the UPS battery pack should meet the actual load for more than 30 minutes.
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