CN116279704A - Communication system, communication method, electronic device, and readable storage medium - Google Patents
Communication system, communication method, electronic device, and readable storage medium Download PDFInfo
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- CN116279704A CN116279704A CN202211478047.XA CN202211478047A CN116279704A CN 116279704 A CN116279704 A CN 116279704A CN 202211478047 A CN202211478047 A CN 202211478047A CN 116279704 A CN116279704 A CN 116279704A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/70—Details of trackside communication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0018—Communication with or on the vehicle or vehicle train
- B61L15/0027—Radio-based, e.g. using GSM-R
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L2205/00—Communication or navigation systems for railway traffic
- B61L2205/02—Global system for mobile communication - railways (GSM-R)
Abstract
The invention provides a communication system, a communication method, an electronic device and a readable storage medium. The system comprises: the vehicle-mounted communication equipment is in communication connection with the track bypass communication equipment through a plurality of 5G network channels, and is in communication connection with a vehicle-mounted subsystem of the train operation control system; the track bypass communication equipment is in communication connection with a track bypass subsystem of the train operation control system through a plurality of 5G network channels; the plurality of 5G network channels are used for transmitting data packets sent by the vehicle-mounted subsystem or the trackside subsystem. According to the communication system provided by the invention, communication connection is established between the trackside subsystem and the vehicle-mounted subsystem through the plurality of 5G network channels, the vehicle-mounted communication equipment and the trackside communication equipment, so that the requirements of a train operation control system on equipment redundancy and high reliability are met, and the network failure of the whole system is not caused by single-point failure of any subsystem.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communications system, a communications method, an electronic device, and a readable storage medium.
Background
Communication systems for train operation control systems in the railway field are a very specific class of communication systems. The physical layer and the link layer generally adopt various civil communication technologies, such as: international wireless communication standard (Global System for Mobile Communications-ranging, GSM-R), long term evolution (Long Term Evolution, LTE) based internet of things LTE-M, wireless local area network (Wireless Local Area Network, WLAN) technology, etc. for Railway communications and applications. At present, the application degree of the 5G technology in the railway field is low, and the 5G technology is still used for a communication channel similar to LTE-M or WLAN, so that the characteristics of high reliability and low time delay of the 5G technology cannot be effectively utilized.
Disclosure of Invention
The invention provides a communication system, a communication method, electronic equipment and a readable storage medium, which are used for solving the problem that the 5G technical characteristics cannot be effectively utilized in a train operation control system in the prior art.
The invention provides a communication system, which is applied to a train operation control system and comprises:
the system comprises vehicle-mounted communication equipment, rail bypass communication equipment and a plurality of 5G network channels;
the vehicle-mounted communication equipment is in communication connection with the track bypass communication equipment through the plurality of 5G network channels, and is in communication connection with a vehicle-mounted subsystem of the train operation control system; the track bypass communication equipment is in communication connection with a track bypass subsystem of the train operation control system through the plurality of 5G network channels;
and the plurality of 5G network channels are all used for transmitting data packets sent by the vehicle-mounted subsystem or the trackside subsystem.
In some embodiments, the communication system further comprises: a redundant service module;
the redundant service module is respectively arranged in the vehicle-mounted subsystem and the trackside subsystem, and is used for carrying out redundant processing on the received data packets.
In some embodiments, the redundant service module is specifically configured to:
determining a sequence number of a received data packet;
discarding the data packet received at the second moment under the condition that the sequence number of the data packet received at the second moment is the same as the sequence number of the data packet received at the first moment;
the data packet received at the second time and the data packet received at the first time are transmitted by different 5G network channels, and the first time is earlier than the second time.
In some embodiments, the redundant service module is specifically configured to:
determining a 5G network channel corresponding to the minimum communication delay time based on the communication delay time corresponding to the plurality of 5G network channels;
and receiving the data packet through the 5G network channel corresponding to the minimum communication delay time.
In some embodiments, the redundant service module is specifically configured to:
based on the plurality of 5G network channels, handshake connection data corresponding to different 5G network channels is received, wherein the handshake connection data comprises at least one of the following: device ID, communication delay tolerance parameters, or communication data type parameters.
In some embodiments, the redundant service module is specifically configured to:
based on the heartbeat service packet, receiving data packets sent by the same equipment at different moments;
determining interval time corresponding to the data packets sent at different moments, wherein the data packets sent at different moments are transmitted by the same 5G network channel;
and under the condition that the interval time exceeds the heartbeat time corresponding to the heartbeat service packet, determining that the 5G network channel corresponding to the data packet sent at different moments is in a network abnormal state.
The invention also provides a communication method which is applied to the communication system and comprises the following steps:
under the condition that the target vehicle-mounted subsystem and the target trackside subsystem are connected in a handshake mode, determining communication delay time corresponding to each of a plurality of 5G network channels;
and based on a 5G network channel corresponding to the minimum communication delay time, carrying out data transmission between the target vehicle-mounted subsystem and the target trackside subsystem.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a communication method as described in any of the above when executing the program.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a communication method as described in any of the above.
The invention also provides a computer program product comprising a computer program which, when executed by a processor, implements a communication method as described in any of the above.
According to the communication system, the communication method, the electronic equipment and the readable storage medium, communication connection is established between the trackside subsystem and the vehicle-mounted subsystem through the plurality of 5G network channels, the vehicle-mounted communication equipment and the trackside communication equipment, the requirements of a train operation control system on equipment redundancy and high reliability are met, and the condition that network failure of the whole system cannot be caused by single-point failure of any subsystem is ensured.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a communication system according to the present invention;
FIG. 2 is a schematic diagram of a second communication system according to the present invention;
fig. 3 is a schematic diagram of a protocol stack of a communication system provided by the present invention;
FIG. 4 is a flow chart of a communication method provided by the present invention;
fig. 5 is a schematic structural diagram of a communication device provided by the present invention;
fig. 6 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Currently, the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G) has been widely used in the consumer field, and meanwhile, the application in the industrial field has been greatly advanced. The low-delay characteristic of the 5G technology is particularly suitable for the fields with high requirements on reliability and real-time performance and low requirements on bandwidth, such as control systems of industrial sites. There are existing application cases of factory control systems based on 5G ad hoc network technology. However, in the field of train operation control systems, the existing communication system of the train operation control system is only carried by taking 5G as a simple train ground wireless channel in the current industry, and the communication system of the existing train operation control system is not optimally designed by truly utilizing the characteristic of 5G.
The communication system, the communication method, the electronic device and the readable storage medium provided by the invention are described below with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic diagram of a communication system according to the present invention.
Referring to fig. 1, a communication system provided by the present invention may include: an on-board communication device 110, a rail bypass communication device 120, and a plurality of 5G network channels;
the vehicle-mounted communication equipment 110 is in communication connection with the rail bypass communication equipment 120 through a plurality of 5G network channels, and the vehicle-mounted communication equipment 110 is in communication connection with a vehicle-mounted subsystem 130 of the train operation control system; the trackside communication device 120 is communicatively connected to the trackside subsystem 140 of the train operation control system through a plurality of 5G network channels;
the plurality of 5G network channels are each used to transmit data packets sent by either the on-board subsystem 130 or the trackside subsystem 140.
The in-vehicle communication device 110 may correspondingly set different 5G communication devices based on different 5G network channels. As shown in fig. 1, the 5G network channel a may correspond to the in-vehicle communication device 1,5G network channel B may correspond to the in-vehicle communication device 2, or the like. It is to be understood that a plurality of 5G communication devices corresponding to different 5G network channels may be integrated in one vehicle communication device 110, or may be separately provided, which is not specifically limited herein.
It is understood that the in-vehicle communication device 110, the rail bypass communication device 120, the in-vehicle subsystem 130, and the rail bypass subsystem 140 may each be 5G communication devices adapted for communication over multiple 5G network channels.
The in-vehicle communication device 110 may receive packets from the rail bypass communication device 120 via a plurality of 5G network channels and forward the packets to the in-vehicle subsystem 130 in the train operation control system.
The on-board subsystem 130 may include a train autoguard subsystem (Automatic Train Protection, ATP), a train autopilot subsystem (Automatic Train Operation, ATO), or a train sleep wake management subsystem (AOM), among others.
Second, the in-vehicle communication device 110 may send data between the in-vehicle subsystems 130 to the rail bypass communication device 120 or other in-vehicle subsystems of the train.
In addition, for each in-vehicle subsystem 130, the in-vehicle communication device 110 is represented as a plurality of independent internet protocol (Internet Protocol, IP) networks on the network layer, so as to meet the requirements of the railway industry on redundancy and high reliability of devices, and ensure that the single-point failure of any 5G communication device does not cause the network failure of the whole system.
The trackside communication device 120 can be configured to receive data packets sent by the trackside subsystem 140 and forward the data packets to the in-vehicle communication device 110. The rail bypass communication device 120 may correspondingly set different 5G communication devices based on different 5G network channels. As shown in fig. 1, the 5G network channel a may correspond to the track bypass communication device 1,5G network channel B may correspond to the track bypass communication device 2, etc. It is to be understood that a plurality of 5G communication devices corresponding to different 5G network channels may be integrated in one track bypass communication device 110, or may be separately provided, which is not specifically limited herein.
The trackside subsystem 140 may include a train automatic monitoring subsystem (Automatic Train Supervision, ATS), an interlock subsystem (Computer Interlocking, CI), or a Zone Controller (ZC).
The trackside communication device 120 can also receive data packets sent by the vehicle communication device 110 through a plurality of 5G network channels and forward the data packets to the trackside subsystems 140. The rail bypass communication device 120 is represented as two independent IP networks on the network layer for each rail bypass subsystem, meets the requirements of the railway industry on redundancy and high reliability of the devices, and ensures that single-point failure of any 5G communication device can not cause network failure of the whole system.
It will be appreciated that 2 or more 5G network channels may be provided between each on-board subsystem 130 and each trackside subsystem 140. In practical implementation, the embodiment of the present invention preferably adopts an architecture of 2 5G network channels for cost.
According to the communication system provided by the invention, communication connection is established between the trackside subsystem and the vehicle-mounted subsystem through the plurality of 5G network channels, the vehicle-mounted communication equipment and the trackside communication equipment, so that the requirements of a train operation control system on equipment redundancy and high reliability are met, and the network failure of the whole system is not caused by single-point failure of any subsystem.
In some embodiments, the communication system further comprises: a redundant service module;
the redundant service modules are respectively arranged in each vehicle subsystem and each trackside subsystem, and are used for carrying out redundant processing on the received data packets.
In actual implementation, the redundant service module operates inside each subsystem of the train operation control system, including each on-board subsystem and each trackside subsystem, for example, including: the system comprises a train automatic protection subsystem, a train automatic driving subsystem, a train dormancy wakeup management subsystem, an interlocking subsystem, a train automatic monitoring subsystem or a zone control subsystem.
The redundancy service module is used for carrying out redundancy processing on the received data packet, and the redundancy processing can increase the independence of the data and reduce the redundancy of the data.
In actual implementation, the redundant service module may provide a handshake connection service based on application layer data over a transmission control protocol (Transmission Control Protocol, TCP) and user datagram protocol (User Datagram Protocol, UDP) connection.
In some embodiments, the redundant service module is specifically configured to:
based on the plurality of 5G network channels, receiving handshake connection data corresponding to different 5G network channels, wherein the handshake connection data comprises at least one of the following: device ID, communication delay tolerance parameters, or communication data type parameters.
Based on the plurality of 5G network channels, the communication device may independently perform handshake connection services at each 5G network channel. On the basis of successful establishment of TCP connection and UDP connection between any two communication devices, handshake connection data are mutually sent through an application layer, after the handshake connection data corresponding to different 5G network channels are confirmed to be received, handshake connection is completed, and initialization sequence numbers and time-out marking time stamps are respectively carried out.
The handshake connection data may include a device unique identification (Identity Document, ID) of each communication device, a communication delay tolerance parameter, or a communication data type parameter.
The communication delay tolerance parameter may be set to, for example, 50ms or 100ms, and is not specifically limited herein. The communication data type parameter may be, for example, transmission low-latency requirement data or normal data, where normal data is transmission high-latency requirement data or data without latency requirement.
The handshake connection data may be understood as a flag on application layer data of the communication device regarding a communication quality requirement, and delay judgment may be made on a data packet at the application layer based on setting a communication delay tolerance parameter, so as to determine whether the data packet meets the requirement of the communication delay tolerance parameter.
The communication device may set different communication data type parameters at the application layer, i.e. may transmit common data or low latency requirement data simultaneously.
When the equipment A is an interlocking equipment and the equipment B is a vehicle-mounted ATP (adenosine triphosphate) equipment, based on handshake connection service provided by the equipment A redundant service module and the equipment B redundant service module, the communication delay tolerance parameter can be set to be lower 20ms, so that the high real-time requirement of train control data is realized.
When the device a is an interlocking device and the device B is a ground ATS device, the communication delay tolerance parameter is set to 100ms because the real-time requirement between the two systems is relatively low. The data exceeding the delay requirement corresponding to the communication delay tolerance parameter is illegal data.
In some embodiments, the redundant service module is specifically configured to:
determining a 5G network channel corresponding to the minimum communication delay time based on the communication delay time corresponding to the plurality of 5G network channels;
and receiving the data packet through the 5G network channel corresponding to the minimum communication delay time.
Under the condition that any two communication devices establish handshake connection, after data normally sent by the two communication devices, communication delay time corresponding to a plurality of 5G network channels can be determined.
And determining a 5G network channel corresponding to the minimum communication delay time among the communication delay times corresponding to the plurality of 5G network channels, and acquiring the data packet by adopting the 5G network channel, so that the minimum communication delay between two communication devices can be ensured.
In actual implementation, the redundant service module may provide a sequence number verification service based on application layer data over TCP and UDP connections.
In some embodiments, the redundant service module is specifically configured to:
determining a sequence number of a received data packet;
discarding the data packet received at the second moment under the condition that the sequence number of the data packet received at the second moment is the same as the sequence number of the data packet received at the first moment;
the data packet received at the second moment and the data packet received at the first moment are transmitted by different 5G network channels, and the first moment is earlier than the second moment.
In actual execution, each vehicle-mounted subsystem can transmit the same application layer data to the vehicle-mounted communication equipment through different 5G network channels; the trackside subsystems may transmit the same application layer data to the trackside communications device or trackside limited communications device over different 5G network channels.
Different network delays may exist in multiple 5G network channels, and the same data packet sent by a certain subsystem through different 5G network channels may arrive at another subsystem at different times, and if redundancy processing is not performed, more data redundancy may be generated.
In the embodiment of the invention, the data packets are marked with the serial numbers, and the same serial numbers are adopted by the same data packets, so that whether the data packets are repeated packets or not can be conveniently distinguished.
Assuming that the sequence number of the data packet received by a certain subsystem at the second moment is the same as the sequence number of the data packet received at the first moment, the subsystem is indicated to receive the repeated data packet, and then the data packet received later can be discarded, so that the subsystem is ensured to use the network data with the lowest time delay in a plurality of 5G network channels in real time.
For example: device a receives the data packet with the first network number 90 in the dual network sent by device B, if device a has the last received number 89, device a will immediately use the data packet with the 90 number, then device a receives the data packet with the second network number 90 for a period of time, and device a considers the repeated packet, and discards the packet. Thus, the device A is guaranteed to use the network data with the lowest time delay in the double network in real time.
The communication system provided by the invention marks the serial number in the application layer data and increases automatically along with the increase of the data packet, and realizes the multiple access of redundant data of different network channels by checking the serial number, so that the low-delay characteristic of 5G can be utilized to the greatest extent, and the train operation control system really utilizes the low-delay characteristic of 5G.
In actual implementation, the redundant service module may provide heartbeat services based on application layer data over TCP and UDP connections.
In some embodiments, the redundant service module is specifically configured to:
based on the heartbeat service packet, receiving data packets sent by the same equipment at different moments;
determining interval time corresponding to data packets sent at different moments, wherein the data packets sent at different moments are transmitted by the same 5G network channel;
and under the condition that the interval time exceeds the heartbeat time corresponding to the heartbeat service packet, determining that the 5G network channel corresponding to the data packet transmitted at different moments is in a network abnormal state.
In actual execution, based on the redundant service module, each subsystem sends a heartbeat service packet to other subsystems connected with the subsystem, detects and analyzes the interval and quality of the heartbeat of the opposite party, and monitors the communication quality and maintains the communication connection for a long time. Meanwhile, communication disconnection and overtime are rapidly identified through communication delay tolerance parameters in the handshake connection of the two parties. With the low latency characteristic of 5G, the communication delay parameter of the heartbeat can be set to be unequal on the order of milliseconds to hundred milliseconds. For example: 5G can achieve a delay on the order of 5ms in an industrial level networking.
If the heartbeat time can be set to 10ms, i.e. if the interval between receiving two data packets from device B for a certain device a exceeds 10ms, it can be determined that the network quality of the network channel through which the data packet is transmitted is degraded, thereby informing the application layer of performing exception handling.
In some embodiments, the redundant service module may also provide timeout management services. The service manages communication timeout management in various abnormal states such as handshake between both parties, sequence number check error, heartbeat disconnection, and the like. The timeout of the external double-network connection of each subsystem is independently judged, so that the communication function is not influenced even if a single network fails.
Compared with the traditional communication system of the train operation control system, the communication system provided by the invention has higher reliability and lower delay, and is beneficial to realizing smaller tracking interval of the train operation control system; the subsystem architecture of the traditional train operation control system does not need to be changed, and smooth modification and upgrading on the existing system are very beneficial to being realized.
The following describes an embodiment of the present invention by taking a communication system with dual 5G network channels as an example.
The communication system provided by the embodiment of the invention can comprise: the system comprises double-network redundancy 5G communication equipment, a safety communication double-network redundancy service module and a safety communication data verification module.
1. Dual-network redundant 5G communication equipment
As shown in fig. 2, the dual-network redundancy 5G communication device may include an in-vehicle dual-network 5G communication device, a trackside dual-network 5G communication device, and a trackside wired dual-network communication device.
(1) Vehicle-mounted double-network 5G communication equipment
First, the vehicle-mounted dual-network 5G communication device may be configured to receive data from the trackside dual-network 5G communication device and forward the data to each of the vehicle-mounted subsystems in the train operation control system.
Second, the on-board dual-network 5G communication device may be used to send data between on-board subsystems to the off-rail dual-network 5G communication device or to on-board subsystems of other trains. In addition, for each vehicle-mounted subsystem, the vehicle-mounted double-network 5G communication equipment is expressed as two independent IP networks on a network layer, so that the requirements of the railway industry on equipment redundancy and high reliability are met, and the network failure of the whole system is not caused by single-point failure of any 5G communication equipment.
(2) Trackside double-network 5G communication equipment
First, the trackside dual-network 5G communication device may be configured to receive data from the trackside subsystems and forward the data to the vehicle-mounted dual-network 5G communication device. And secondly, the device can be used for receiving data of the vehicle-mounted double-network 5G system device and forwarding the data to each subsystem beside the track. For each subsystem beside the track, the double-network 5G communication equipment presents two independent IP networks on the network layer, meets the requirements of the railway industry on equipment redundancy and high reliability, and ensures that the single-point hardware failure of any 5G communication equipment can not cause the network failure of the whole system.
(3) Trackside wired double-network communication equipment
The trackside wired double-network communication equipment is mainly used for data interaction among trackside subsystems. For each subsystem beside the track, the wired double-network communication equipment beside the track is expressed as two independent IP networks on a network layer, so that the requirements of the railway industry on equipment redundancy and high reliability are met, and the network failure of the whole system can not be caused by single-point hardware failure of any 5G communication equipment.
2. Safety communication double-network redundant service module
The module operates inside each subsystem of the train operation control system, including each on-board subsystem and each trackside subsystem. The module is used for providing handshake connection service, double-network serial number check service, double-network heartbeat service and double-network timeout management service based on the upper application layer data of the TCP and UDP connection to the respective subsystems.
(1) Handshake connection service.
Each of the two networks independently performs a handshake connection service. On the basis of successful establishment of TCP and UDP connection between 2 communication nodes, the application layer mutually sends handshake connection data and confirms the receipt, the handshake connection is completed, and the sequence number is initialized and the time stamp is marked in a timeout. The handshake connection data includes a device unique tag ID, communication delay tolerance parameters, and communication data type parameters for each communication node.
(2) And (5) a dual-network serial number checking service.
And each subsystem transmits the same application layer data to the vehicle-mounted double-network 5G communication equipment, the trackside double-network 5G communication equipment and the trackside wired double-network communication equipment. Meanwhile, the serial number is marked in the application layer data and is increased automatically along with the increase of the data packet, and the module realizes the two-out of the double-network redundant data by checking the serial number, so that the low-delay characteristic of 5G can be utilized to the greatest extent, and the train operation control system really utilizes the low-delay characteristic of 5G.
(3) Dual-network heartbeat services.
Each subsystem sends a heartbeat service packet to other subsystems connected with the subsystem, detects and analyzes the interval and quality of heartbeats of the opposite party, and monitors the communication quality and maintains the communication connection for a long time. Meanwhile, communication disconnection and overtime are rapidly identified through communication delay tolerance parameters in the handshake connection of the two parties.
(4) Dual-network timeout management service.
The service manages communication timeout management in various abnormal states such as handshake between both parties, sequence number check error, heartbeat disconnection, and the like. The timeout of the external double-network connection of each subsystem is independently judged, so that the communication function is not influenced even if a single network fails.
3. Secure communication data verification module
The module may provide a cyclic redundancy check (Cyclic Redundancy Check, CRC) check service and an encryption and decryption check service. The service is to carry out the last data integrity check service on the premise that the data is not overtime. The service can be customized according to engineering and can use CRC check or more strict encryption and decryption algorithm check. Including CRC check services, encryption and decryption check services. The service is to carry out the last data integrity check service on the premise that the data is not overtime. The service can be customized according to engineering and can use CRC check or more strict encryption and decryption algorithm check.
The embodiment of the invention can be applied to the following scenes:
in actual implementation, the interlock subsystem (device a) and the on-board ATP subsystem (device B) of one side head of a vehicle communicate through a 5G network channel of the dual network.
The two devices first establish a transport layer connection via the TCP or UDP protocol. Since the 5G network channel is a dual network, a connection between two transport layers is established between two devices.
The two parties establish connection through the handshake connection service of the double-network redundancy service module, and the two parties mutually inform respective equipment IDs and communication delay tolerance parameters. After the handshake connection is established successfully, the data normally sent by both parties pass through the sequence number check and the overtime service check, and then enter a secure communication check module for CRC check. And finally entering the application layer of each subsystem to process the application data after the CRC passes. A protocol stack schematic is shown in fig. 3.
Delay analysis: suppose the communication delay of the 10 th second a network after the handshake is successful is 20ms and the communication delay of the b network is 40ms. Since the dual-network redundancy service acquires dual-network data by a two-by-one method, the communication delay between two devices is small by 20ms.
The technical key points of the communication system provided by the invention are as follows:
(1) Establishing a system architecture and a data flow with definite layers of a communication system of a train operation control system based on a 5G technology;
(2) And establishing a main functional mechanism of each module of a communication system of the train operation control system based on the 5G technology.
(3) The technical characteristics of the system can effectively utilize the low-time delay and high-reliability characteristics of the 5G technology.
The invention also provides a communication method which is applied to the communication system in the embodiment.
Fig. 4 is a flow chart of a communication method provided by the invention. Referring to fig. 4, the communication method provided by the present invention includes: step 410 and step 420.
and step 420, performing data transmission between the target vehicle-mounted subsystem and the target trackside subsystem based on the 5G network channel corresponding to the minimum communication delay time.
The execution subject of the communication method provided by the invention can be an electronic device, a component in an electronic device, an integrated circuit, or a chip. The electronic device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a cell phone, tablet computer, notebook computer, palm computer, vehicle mounted electronic device, wearable device, ultra-mobile personal computer (ultra-mobile personal computer, UMPC), netbook or personal digital assistant (personal digital assistant, PDA), etc., and the non-mobile electronic device may be a server or network attached storage (Network Attached Storage, NAS), etc., without limitation of the invention.
The following describes the technical scheme of the present invention in detail by taking a computer to execute the communication method provided by the present invention as an example.
Under the condition that any two communication devices establish handshake connection, after data normally sent by the two communication devices, communication delay time corresponding to a plurality of 5G network channels can be determined.
And determining a 5G network channel corresponding to the minimum communication delay time among the communication delay times corresponding to the plurality of 5G network channels, and acquiring the data packet by adopting the 5G network channel, so that the minimum communication delay between two communication devices can be ensured.
The communication method provided by the invention realizes the reduction of communication time delay, the improvement of reliability and availability among communication equipment of a train operation control system by utilizing the characteristics of high reliability and low time delay of the 5G technology.
The communication device provided by the invention is described below, and the communication device described below and the communication method described above can be referred to correspondingly.
Fig. 5 is a schematic structural diagram of a communication device provided by the present invention. Referring to fig. 5, the communication apparatus provided by the present invention includes: a determination module 510 and a transmission module 520.
A determining module 510, configured to determine communication delay times corresponding to the plurality of 5G network channels respectively when the target vehicle subsystem and the target trackside subsystem complete handshake connection;
and the transmission module 520 is configured to perform data transmission between the target vehicle-mounted subsystem and the target trackside subsystem based on the 5G network channel corresponding to the minimum communication delay time.
The communication device provided by the invention realizes the reduction of communication time delay, the improvement of reliability and availability among communication equipment of a train operation control system by utilizing the characteristics of high reliability and low time delay of the 5G technology.
Fig. 6 illustrates a physical schematic diagram of an electronic device, as shown in fig. 6, which may include: processor 610, communication interface (Communications Interface) 620, memory 630, and communication bus 640, wherein processor 610, communication interface 620, and memory 630 communicate with each other via communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to perform a method of communication, the method comprising:
under the condition that the target vehicle-mounted subsystem and the target trackside subsystem are connected in a handshake mode, determining communication delay time corresponding to each of a plurality of 5G network channels;
and based on a 5G network channel corresponding to the minimum communication delay time, carrying out data transmission between the target vehicle-mounted subsystem and the target trackside subsystem.
Further, the logic instructions in the memory 630 may be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of performing the communication method provided by the methods described above, the method comprising:
under the condition that the target vehicle-mounted subsystem and the target trackside subsystem are connected in a handshake mode, determining communication delay time corresponding to each of a plurality of 5G network channels;
and based on a 5G network channel corresponding to the minimum communication delay time, carrying out data transmission between the target vehicle-mounted subsystem and the target trackside subsystem.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform a communication method provided by the above methods, the method comprising:
under the condition that the target vehicle-mounted subsystem and the target trackside subsystem are connected in a handshake mode, determining communication delay time corresponding to each of a plurality of 5G network channels;
and based on a 5G network channel corresponding to the minimum communication delay time, carrying out data transmission between the target vehicle-mounted subsystem and the target trackside subsystem.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A communication system for use in a train operation control system, comprising: the system comprises vehicle-mounted communication equipment, rail bypass communication equipment and a plurality of 5G network channels;
the vehicle-mounted communication equipment is in communication connection with the track bypass communication equipment through the plurality of 5G network channels, and is in communication connection with a vehicle-mounted subsystem of the train operation control system; the track bypass communication equipment is in communication connection with a track bypass subsystem of the train operation control system through the plurality of 5G network channels;
and the plurality of 5G network channels are all used for transmitting data packets sent by the vehicle-mounted subsystem or the trackside subsystem.
2. The communication system according to claim 1, characterized in that the communication system further comprises: a redundant service module;
the redundant service module is respectively arranged in the vehicle-mounted subsystem and the trackside subsystem, and is used for carrying out redundant processing on the received data packets.
3. The communication system according to claim 2, wherein the redundant service module is specifically configured to:
determining a sequence number of a received data packet;
discarding the data packet received at the second moment under the condition that the sequence number of the data packet received at the second moment is the same as the sequence number of the data packet received at the first moment;
the data packet received at the second time and the data packet received at the first time are transmitted by different 5G network channels, and the first time is earlier than the second time.
4. The communication system according to claim 2, wherein the redundant service module is specifically configured to:
determining a 5G network channel corresponding to the minimum communication delay time based on the communication delay time corresponding to the plurality of 5G network channels;
and receiving the data packet through the 5G network channel corresponding to the minimum communication delay time.
5. The communication system according to claim 2, wherein the redundant service module is specifically configured to:
based on the plurality of 5G network channels, handshake connection data corresponding to different 5G network channels is received, wherein the handshake connection data comprises at least one of the following: device ID, communication delay tolerance parameters, or communication data type parameters.
6. The communication system according to claim 2, wherein the redundant service module is specifically configured to:
based on the heartbeat service packet, receiving data packets sent by the same equipment at different moments;
determining interval time corresponding to the data packets sent at different moments, wherein the data packets sent at different moments are transmitted by the same 5G network channel;
and under the condition that the interval time exceeds the heartbeat time corresponding to the heartbeat service packet, determining that the 5G network channel corresponding to the data packet sent at different moments is in a network abnormal state.
7. A communication method applied to the communication system of any one of claims 1-6, comprising:
under the condition that the target vehicle-mounted subsystem and the target trackside subsystem are connected in a handshake mode, determining communication delay time corresponding to each of a plurality of 5G network channels;
and based on a 5G network channel corresponding to the minimum communication delay time, carrying out data transmission between the target vehicle-mounted subsystem and the target trackside subsystem.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the communication method of claim 7 when executing the program.
9. A non-transitory computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the communication method according to claim 7.
10. A computer program product comprising a computer program which, when executed by a processor, implements the communication method according to claim 7.
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| CN202211478047.XA CN116279704A (en) | 2022-11-23 | 2022-11-23 | Communication system, communication method, electronic device, and readable storage medium |
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| CN202211478047.XA CN116279704A (en) | 2022-11-23 | 2022-11-23 | Communication system, communication method, electronic device, and readable storage medium |
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