CN117714359B - Railway communication method, system and call column - Google Patents

Railway communication method, system and call column Download PDF

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Publication number
CN117714359B
CN117714359B CN202410161459.3A CN202410161459A CN117714359B CN 117714359 B CN117714359 B CN 117714359B CN 202410161459 A CN202410161459 A CN 202410161459A CN 117714359 B CN117714359 B CN 117714359B
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data packet
route
planning
epon
mesh
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CN117714359A (en
Inventor
赵发义
李敬钦
郝勇
熊伟
牛建设
许扬
崔炳胜
任贻刚
韩锋
刘静
曹量
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Tianjin Huayu Hengtong Photoelectric Technology Co ltd
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Tianjin Huayu Hengtong Photoelectric Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/70—Routing based on monitoring results
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/18—Protocol analysers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/08—Protocols for interworking; Protocol conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0073—Provisions for forwarding or routing, e.g. lookup tables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The application relates to a railway communication method, a railway communication system and a communication column, which belong to the technical field of communication, wherein the railway communication method comprises the steps of responding to the received first data packet and judging whether the first data packet can be normally transmitted or not; if not, sending a path planning request to the central node; receiving a routing plan from a central node; the routing planning scheme is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information; judging whether the planning protocol type is consistent with the current transmission protocol type; if the first data packet is consistent, forwarding the first data packet based on the planning routing information; and if the first data packet is inconsistent, carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information. The application has the effect of improving the reliability of communication.

Description

Railway communication method, system and call column
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a railway communication method, a railway communication system, and a call column.
Background
With the continuous development of railway communication technology, the call column is taken as an important component in a railway communication system, and the communication quality and reliability of the call column are important for guaranteeing the safe operation of a train.
At present, a railway communication system mainly adopts a wired communication mode, such as EPON optical fiber communication, and although the wired communication has higher data transmission rate and stability, the wired communication mode also leads the EPON optical fiber communication to be completely dependent on the layout of a hardware optical cable and be easily influenced by environmental factors, thereby causing faults or performance degradation in the transmission process of the system, so how to improve the reliability of the railway communication is a problem to be solved urgently at present.
Disclosure of Invention
In order to improve the reliability of railway communication, the application provides a railway communication method, a railway communication system and a call column.
In a first aspect, the present application provides a railway communication method, which adopts the following technical scheme:
a railway communication method is applied to a call column of a terminal node, wherein the call column comprises a MESH wireless communication module and an EPON optical fiber communication module, and comprises the following steps:
In response to receiving the first data packet, judging whether the first data packet can be normally transmitted;
If not, sending a path planning request to the central node; the path planning request comprises a request address of a terminal node initiating the request, a target address of a target terminal node and a current transmission protocol type;
Receiving a routing plan from a central node; the routing planning scheme is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information;
judging whether the planning protocol type is consistent with the current transmission protocol type;
if the first data packet is consistent, forwarding the first data packet based on the planning routing information;
and if the first data packet is inconsistent, carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information.
By adopting the technical scheme, when the first data packet cannot be normally transmitted, a path planning request is sent to the central node, then a route planning scheme returned by the central node is received, and whether protocol switching is required or not is judged according to the planning protocol type and the current transmission protocol type in the scheme, namely if the first data packet is consistent, the first data packet is directly converted based on planning route information; if the first data packet is inconsistent, the protocol conversion is carried out on the first data packet, the converted second data packet is forwarded based on the planned route information, and the timely protocol switching transmission is ensured to be carried out when the transmission is abnormal through flexible protocol switching, so that the reliability of data transmission is improved.
Optionally, the determining whether the first data packet can be normally transmitted specifically includes:
according to the current transmission protocol type, checking the communication performance index of the current terminal node to obtain a first checking result, and checking the communication performance index of the terminal node of the next hop address of the first data packet to obtain a second checking result;
Responding to the first checking result and the second checking result to be normal, and judging that the first data packet can be transmitted normally;
And responding to the first checking result or the second checking result to be abnormal, and judging that the first data packet cannot be normally transmitted.
By adopting the technical scheme, the communication performance indexes of the current and next hop address terminal nodes are checked according to the current transmission protocol type to obtain the first check result and the second check result, and the transmission of the first data packet can be completed only when the first check result and the second check result are normal, so that whether the first data packet can be normally transmitted or not is conveniently judged.
Optionally, the protocol conversion is performed on the first data packet to obtain a second data packet, which specifically includes:
Responding to the first data packet as an EPON data packet, and splitting the first data packet according to a preset EPON protocol template to obtain a first replacement field;
converting the first replacement field to obtain an MESH data field;
Analyzing a forwarding path from the planning route information;
and combining the forwarding path and the MESH data field according to a preset MESH protocol template to obtain a second data packet.
By adopting the technical scheme, when the first data packet is an EPON data packet, the first data packet is split according to the preset EPON protocol template to obtain the first replacement field so as to generate the MESH data field, and the forwarding path is analyzed from the planning route information.
Optionally, the protocol conversion is performed on the first data packet to obtain a second data packet, which specifically includes:
Responding to the first data packet as the MESH data packet, and splitting the first data packet according to a preset MESH protocol template to obtain a second replacement field;
converting the second replacement field to obtain an EPON data field;
resolving a source address and a target address from the planning route information;
and combining the EPON data field, the source address and the target address according to a preset EPON protocol template to obtain a second data packet.
By adopting the technical scheme, when the first data packet is the MESH data packet, the first data packet is split according to the preset MESH protocol template to obtain the second replacement field so as to be converted into the EPON data field, and then the source address and the target address are resolved from the planning routing information.
Optionally, after the determining that the first data packet cannot be normally transmitted, the method further includes:
and generating an exception report and reporting the exception report to the central node.
By adopting the technical scheme, the central node can conveniently adjust the transmission path in real time according to the abnormal report.
In a second aspect, the present application provides a railway communication method, which adopts the following technical scheme:
a railway communication method, based on the method, is applied to a call column of a central node, and comprises the following steps:
receiving a path planning request;
Acquiring an overall EPON communication index and an overall MESH communication index of a terminal node;
generating an EPON route according to the request address, the target address and the overall EPON communication index; wherein the EPON route includes a source address and a destination address;
generating a MESH route according to the request address, the target address and the overall MESH communication index; the MESH route comprises a forwarding path;
Determining a route planning scheme according to the EPON route and the MESH route; the routing planning scheme comprises a planning protocol type and planning routing information;
and issuing the route planning scheme based on the request address.
By adopting the technical scheme, after receiving the path planning request, the EPON route and the MESH route are respectively generated based on the request address, the target address, the overall EPON communication index and the overall MESH communication index of the terminal node, then the route planning scheme is determined according to the EPON route and the MESH route so as to realize the generation of the optimal route planning scheme, and the generated route dividing scheme is issued to the corresponding terminal node so as to guide the terminal node to transmit the data packet.
Optionally, the determining a routing plan according to the EPON route and the MESH route specifically includes:
respectively acquiring a first path detection index of an EPON route and a second path detection index of a MESH route;
setting the priorities of an EPON route and a MESH route according to the current transmission protocol type;
and selecting one of the EPON route or the MESH route as a route planning scheme according to the first path detection index, the second path detection index and the priority.
By adopting the technical scheme, the priorities of the EPON route and the MESH route are set according to the current transmission protocol type, and one of the EPON route and the MESH route is selected as a route planning scheme by combining the path performance, so that a transmission mode with better performance is selected, and repeated switching of the transmission mode is avoided to a certain extent.
In a third aspect, the present application provides a railway communication system, which adopts the following technical scheme:
a railway communication system, based on the method, comprising:
the transmission checking unit is used for responding to the received first data packet and judging whether the first data packet can be normally transmitted or not;
A request unit, configured to send a path planning request to a central node when the first data packet cannot be normally transmitted; the path planning request comprises a request address of a terminal node initiating the request, a target address of a target terminal node and a current transmission protocol type;
A scheme receiving unit for receiving a route planning scheme from the central node; the routing planning scheme is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information;
The forwarding unit is used for judging whether the planning protocol type is consistent with the current transmission protocol type; if the first data packet is consistent, forwarding the first data packet based on the planning routing information; and if the first data packet is inconsistent, carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information.
In a fourth aspect, the present application provides a railway communication system, which adopts the following technical scheme:
a railway communication system, based on the method, comprising:
A request receiving unit for receiving a path planning request;
the detection unit is used for acquiring the overall EPON communication index and the overall MESH communication index of the terminal node;
The first route generation unit is used for generating an EPON route according to the request address, the target address and the overall EPON communication index; wherein the EPON route includes a source address and a destination address;
The second route generating unit is used for generating a MESH route according to the request address, the target address and the overall MESH communication index; the MESH route comprises a forwarding path;
The scheme determining unit is used for determining a route planning scheme according to the EPON route and the MESH route; the routing planning scheme comprises a planning protocol type and planning routing information;
and the scheme issuing unit is used for issuing the route planning scheme based on the request address.
In a fifth aspect, the present application provides a call column, which adopts the following technical scheme:
a call leg comprising a railway communication system as described above.
Drawings
Fig. 1 is a flow chart of a railroad communication method applied to a terminal node in accordance with one embodiment of the present application.
Fig. 2 is a flow chart of a method for performing protocol conversion on a first data packet according to an embodiment of the present application.
Fig. 3 is a flowchart of a method for performing protocol conversion on a first data packet according to another embodiment of the present application.
Fig. 4 is a flow chart of a railroad communication method applied to a central node in accordance with one embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
First, before an exemplary description of related embodiments provided by the present application, related terms to which the present application relates will be explained.
EPON (ETHERNET PASSIVE Optical Network) is an Optical access Network protocol based on ethernet technology, and adopts a single-fiber bidirectional transmission mode to realize comprehensive access of multiple services such as data, voice, video and the like. In the EPON protocol, the central node, the OLT (Optical LINE TERMINAL) node, is responsible for providing the network interface and transmission of Optical signals while managing interactions between the user and the network. The terminal node is ONU (Optical Network Unit) node, which is responsible for converting the optical signal into the electric signal and providing the user access and the transmission function of the data packet.
The MESH protocol is a wireless MESH network protocol, and aims to realize multi-hop wireless communication, and a distributed network topology structure is adopted, so that a plurality of nodes are connected with one another to form an self-organizing network. In a MESH network, nodes may forward data to implement multiple hops of data, ultimately reaching a destination.
Next, the architecture of the railway communication system provided by the embodiment of the application is introduced. At present, railway communication adopts a call column conforming to an EPON protocol for data transmission, the call column can be arranged along a railway line, and the call column is divided into an OLT node and an OUN node in the EPON protocol. In this embodiment, the MESH wireless communication module is added in each call column, and because a multi-hop network is formed by connecting MESH nodes in the MESH network, the topology structure enables each node to serve as an intermediate node for data transmission, and forwarding and scheduling are performed on the data, that is, the nodes of the MESH network have no master-slave division, so in this embodiment, the call column will only need to be divided into a terminal node (OUN node) and a central node (OLT node) according to the EPON protocol.
The embodiment of the application discloses a railway communication method. Referring to fig. 1, a railway communication method is applied to a call column of a terminal node, where the call column includes a MESH wireless communication module and an EPON fiber communication module, and includes:
step S101: in response to receiving the first data packet, judging whether the first data packet can be normally transmitted; if not, executing step S102; if yes, forwarding the first data packet.
Step S102: sending a path planning request to a central node;
The path planning request comprises a request address of a terminal node initiating the request, a target address of a target terminal node and a current transmission protocol type;
step S103: receiving a routing plan from a central node;
the routing plan is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information.
When the planning protocol type is an EPON protocol, the planning route information is a source address and a target address.
Step S104: judging whether the planning protocol type is consistent with the current transmission protocol type; if so, executing step S105; if not, step S106 is performed.
The current transmission protocol type is the protocol type of the first data packet, and header information of the first data packet is extracted to obtain the protocol type.
Step S105: forwarding the first data packet based on the planned route information;
step S106: and carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information.
It should be appreciated that the first packet is one of a MESH packet or an EPON packet and the second packet is the other of a MESH packet or an EPON packet. Namely, when the first data packet is a MESH data packet, the second data packet is an EPON data packet; otherwise, when the second data packet is an EPON data packet, the first data packet is a MESH data packet.
In the above embodiment, when the first data packet cannot be normally transmitted, a path planning request is sent to the central node, and then a route planning scheme returned by the central node is received, and whether the protocol needs to be switched is judged according to the planning protocol type and the current transmission protocol type in the scheme, that is, if the first data packet is consistent, the first data packet is directly transferred based on the planning route information; if the first data packet is inconsistent, the protocol conversion is carried out on the first data packet, the converted second data packet is forwarded based on the planned route information, and the timely protocol switching transmission is ensured to be carried out when the transmission is abnormal through flexible protocol switching, so that the reliability of data transmission is improved.
As an embodiment of step S101, step S101 specifically includes:
According to the current transmission protocol type, checking the communication performance index of the current terminal node to obtain a first checking result, and checking the communication performance index of the terminal node of the next hop address of the first data packet to obtain a second checking result; responding to the first checking result and the second checking result to be normal, and judging that the first data packet can be transmitted normally; and responding to the first checking result or the second checking result to be abnormal, and judging that the first data packet cannot be normally transmitted.
It should be appreciated that, whether the current transport protocol type is the MESH protocol or the EPON protocol, the communication performance indicators of the current end node and the end node of the next hop address need to be checked before the first packet is forwarded, so as to improve the stability of the first packet transmission.
In the above embodiment, the communication performance indexes of the current and next hop address terminal nodes are checked according to the current transmission protocol type to obtain the first check result and the second check result, and the transmission of the first data packet can be completed only when the first check result and the second check result are normal, so that it is convenient to determine whether the first data packet can be normally transmitted.
Referring to fig. 2, as an embodiment of step S106, step S106 specifically includes:
Step S201: responding to the first data packet as an EPON data packet, and splitting the first data packet according to a preset EPON protocol template to obtain a first replacement field;
step S202: converting the first replacement field to obtain an MESH data field;
step S203: analyzing a forwarding path from the planning route information;
step S204: and combining the forwarding path and the MESH data field according to a preset MESH protocol template to obtain a second data packet.
In the above embodiment, when the first data packet is an EPON data packet, the first data packet is split according to a preset EPON protocol template to obtain a first replacement field, so as to generate a MESH data field, and a forwarding path is parsed from the planned route information.
Referring to fig. 3, as another embodiment of step S106, step S106 specifically includes:
Step S301: responding to the first data packet as the MESH data packet, and splitting the first data packet according to a preset MESH protocol template to obtain a second replacement field;
step S302: converting the second replacement field to obtain an EPON data field;
step S303: resolving a source address and a target address from the planning route information;
Step S304: and combining the EPON data field, the source address and the target address according to a preset EPON protocol template to obtain a second data packet.
In the above embodiment, when the first data packet is a MESH data packet, the first data packet is split according to a preset MESH protocol template to obtain a second replacement field so as to be converted into an EPON data field, and then the source address and the destination address are resolved from the planned routing information.
As a further embodiment of the railway communication method, after the determining that the first data packet cannot be normally transmitted, the method further includes:
and generating an exception report and reporting the exception report to the central node.
In the above embodiment, the central node is convenient to adjust the transmission path in real time according to the abnormality report.
The application also discloses a railway communication method, referring to fig. 4, which is applied to the call column of the central node, based on the method, the method comprises the following steps:
step S401: receiving a path planning request;
step S402: acquiring an overall EPON communication index and an overall MESH communication index of a terminal node;
Wherein, the overall EPON communication index and the overall MESH communication index each include one or more of throughput, delay, packet loss rate, bandwidth utilization, and error rate. In particular, throughput refers to the rate at which data is successfully transmitted on a network device or system. In the MESH protocol and EPon protocol, throughput is typically measured in units of Mbps (megabits per second) or Gbps (gigabits per second). The higher the throughput, the more transmission capability the protocol is represented. Delay refers to the time required for data to be transmitted from a sender to a receiver. The packet loss rate refers to the ratio of the number of lost packets to the total number of packets during network transmission. The bandwidth utilization refers to the ratio of the bandwidth actually used in the network transmission process to the total bandwidth, and the high bandwidth utilization indicates that the protocol can effectively utilize network resources. The error rate refers to the ratio of the number of data errors that occur during network transmission to the total data size.
Step S403: generating an EPON route according to the request address, the target address and the overall EPON communication index;
the EPON route comprises a source address and a target address, wherein the source address is the address of a terminal node needing to send the data packet, and the target address is the address of the terminal node receiving the data packet.
Step S404: generating a MESH route according to the request address, the target address and the overall MESH communication index;
wherein the MESH route includes a forwarding path;
Step S405: determining a route planning scheme according to the EPON route and the MESH route;
The routing planning scheme comprises a planning protocol type and planning routing information;
step S406: and issuing the route planning scheme based on the request address.
In the above embodiment, after receiving the path planning request, the EPON route and the MESH route are respectively generated based on the request address, the destination address, the overall EPON communication index and the overall MESH communication index of the terminal node, and then the route planning scheme is determined according to the EPON route and the MESH route, so as to realize the generation of the optimal route planning scheme, and then the generated route dividing scheme is issued to the corresponding terminal node, so as to guide the transmission path of the terminal node to the data packet.
As an embodiment of step S405, step S405 specifically includes:
respectively acquiring a first path detection index of an EPON route and a second path detection index of a MESH route;
setting the priorities of an EPON route and a MESH route according to the current transmission protocol type;
and selecting one of the EPON route or the MESH route as a route planning scheme according to the first path detection index, the second path detection index and the priority.
It should be appreciated that the first path detection indicator and the second path detection indicator may both be detected using a path detection tool, including a traceroute network diagnostic tool or an mtr network diagnostic tool, to obtain the first path detection indicator and the second path detection indicator.
The priorities are to set weights for EPON routes and MESH routes, and the current transport protocol type is set to be high weight. If the current transport protocol is an EPON protocol, the priority of the EPON route is set to be greater than the priority of the MESH route, for example, the priority of the EPON route is set to 0.7 and the priority of the MESH route is set to 0.3.
Specifically, the first path detection index and the second path detection index are multiplied by priorities to obtain a final score of the EPON route and a final score of the MESH route respectively, and one of the EPON route and the MESH route is selected as a route planning scheme. By setting the route of the current transmission protocol type to be high priority so as to preferentially select the route of the current transmission protocol type, repeated switching of the protocol type in the transmission process is avoided.
In the above embodiment, according to the current transport protocol type, priorities of the EPON route and the MESH route are set, and then path performance is combined to select one of the EPON route and the MESH route as a route planning scheme, so as to select a transport mode with better performance and avoid repeated switching of the transport mode to a certain extent.
The application also discloses a railway communication system based on the method, which comprises the following steps:
the transmission checking unit is used for responding to the received first data packet and judging whether the first data packet can be normally transmitted or not;
A request unit, configured to send a path planning request to a central node when the first data packet cannot be normally transmitted; the path planning request comprises a request address of a terminal node initiating the request, a target address of a target terminal node and a current transmission protocol type;
A scheme receiving unit for receiving a route planning scheme from the central node; the routing planning scheme is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information;
The forwarding unit is used for judging whether the planning protocol type is consistent with the current transmission protocol type; if the first data packet is consistent, forwarding the first data packet based on the planning routing information; and if the first data packet is inconsistent, carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information.
The application also discloses a railway communication system, which adopts the following technical scheme:
a railway communication system, based on the method, comprising:
A request receiving unit for receiving a path planning request;
the detection unit is used for acquiring the overall EPON communication index and the overall MESH communication index of the terminal node;
The first route generation unit is used for generating an EPON route according to the request address, the target address and the overall EPON communication index; wherein the EPON route includes a source address and a destination address;
The second route generating unit is used for generating a MESH route according to the request address, the target address and the overall MESH communication index; the MESH route comprises a forwarding path;
The scheme determining unit is used for determining a route planning scheme according to the EPON route and the MESH route; the routing planning scheme comprises a planning protocol type and planning routing information;
and the scheme issuing unit is used for issuing the route planning scheme based on the request address.
The application also discloses a call column comprising the railway communication system.
The railway communication system provided by the application can realize the railway communication method, and the specific working process of the railway communication system can refer to the corresponding process in the embodiment of the method.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
Based on the same technical concept, the invention also discloses a computer device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program of any one of the methods.
The invention also discloses a computer readable storage medium comprising a computer program stored with instructions executable by a processor to load and execute any of the methods described above.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The foregoing description of the preferred embodiments of the application is not intended to limit the scope of the application in any way, including the abstract and drawings, in which case any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.

Claims (8)

1. The railway communication method is characterized by being applied to a call column of a terminal node, wherein the call column comprises a MESH wireless communication module and an EPON optical fiber communication module, and the method comprises the following steps of:
In response to receiving the first data packet, judging whether the first data packet can be normally transmitted;
If not, sending a path planning request to the central node; the path planning request comprises a request address of a terminal node initiating the request, a target address of a target terminal node and a current transmission protocol type;
Receiving a routing plan from a central node; the routing planning scheme is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information;
judging whether the planning protocol type is consistent with the current transmission protocol type;
if the first data packet is consistent, forwarding the first data packet based on the planning routing information;
If the first data packet is inconsistent, carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information;
the protocol conversion is performed on the first data packet to obtain a second data packet, which specifically comprises:
Responding to the first data packet as an EPON data packet, and splitting the first data packet according to a preset EPON protocol template to obtain a first replacement field;
converting the first replacement field to obtain an MESH data field;
Analyzing a forwarding path from the planning route information;
Combining the forwarding path and the MESH data field according to a preset MESH protocol template to obtain a second data packet;
Or alternatively, the first and second heat exchangers may be,
Responding to the first data packet as the MESH data packet, and splitting the first data packet according to a preset MESH protocol template to obtain a second replacement field;
converting the second replacement field to obtain an EPON data field;
resolving a source address and a target address from the planning route information;
and combining the EPON data field, the source address and the target address according to a preset EPON protocol template to obtain a second data packet.
2. The method of claim 1, wherein the determining whether the first data packet can be normally transmitted specifically comprises:
according to the current transmission protocol type, checking the communication performance index of the current terminal node to obtain a first checking result, and checking the communication performance index of the terminal node of the next hop address of the first data packet to obtain a second checking result;
Responding to the first checking result and the second checking result to be normal, and judging that the first data packet can be transmitted normally;
And responding to the first checking result or the second checking result to be abnormal, and judging that the first data packet cannot be normally transmitted.
3. The method of claim 2, wherein after the determining that the first data packet cannot be normally transmitted, further comprising:
and generating an exception report and reporting the exception report to the central node.
4. A method of railroad communication based on the method of any one of claims 1-3, characterized by a call leg applied to a central node comprising:
receiving a path planning request;
Acquiring an overall EPON communication index and an overall MESH communication index of a terminal node;
generating an EPON route according to the request address, the target address and the overall EPON communication index; wherein the EPON route includes a source address and a destination address;
generating a MESH route according to the request address, the target address and the overall MESH communication index; the MESH route comprises a forwarding path;
Determining a route planning scheme according to the EPON route and the MESH route; the routing planning scheme comprises a planning protocol type and planning routing information;
and issuing the route planning scheme based on the request address.
5. The method according to claim 4, wherein determining a routing scheme according to an EPON route and a MESH route specifically includes:
respectively acquiring a first path detection index of an EPON route and a second path detection index of a MESH route;
setting the priorities of an EPON route and a MESH route according to the current transmission protocol type;
and selecting one of the EPON route or the MESH route as a route planning scheme according to the first path detection index, the second path detection index and the priority.
6. A railway communication system, characterized in that it is based on the method according to any one of claims 1-3, said system comprising:
the transmission checking unit is used for responding to the received first data packet and judging whether the first data packet can be normally transmitted or not;
A request unit, configured to send a path planning request to a central node when the first data packet cannot be normally transmitted; the path planning request comprises a request address of a terminal node initiating the request, a target address of a target terminal node and a current transmission protocol type;
A scheme receiving unit for receiving a route planning scheme from the central node; the routing planning scheme is generated by the central node based on the path planning request, and comprises a planning protocol type and planning routing information;
The forwarding unit is used for judging whether the planning protocol type is consistent with the current transmission protocol type; if the first data packet is consistent, forwarding the first data packet based on the planning routing information; and if the first data packet is inconsistent, carrying out protocol conversion on the first data packet to obtain a second data packet, and forwarding the second data packet based on the planned routing information.
7. A railway communication system, characterized in that it comprises, based on the method according to any of claims 4-5:
A request receiving unit for receiving a path planning request;
the detection unit is used for acquiring the overall EPON communication index and the overall MESH communication index of the terminal node;
The first route generation unit is used for generating an EPON route according to the request address, the target address and the overall EPON communication index; wherein the EPON route includes a source address and a destination address;
The second route generating unit is used for generating a MESH route according to the request address, the target address and the overall MESH communication index; the MESH route comprises a forwarding path;
The scheme determining unit is used for determining a route planning scheme according to the EPON route and the MESH route; the routing planning scheme comprises a planning protocol type and planning routing information;
and the scheme issuing unit is used for issuing the route planning scheme based on the request address.
8. A call leg comprising a railway communication system as claimed in claim 6 or 7.
CN202410161459.3A 2024-02-05 2024-02-05 Railway communication method, system and call column Active CN117714359B (en)

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WO2023151500A1 (en) * 2022-02-14 2023-08-17 阿里巴巴达摩院(杭州)科技有限公司 Wireless communication method, gateway, device, and system
CN116886594A (en) * 2023-08-23 2023-10-13 中国电信股份有限公司技术创新中心 Data transmission method, device, storage medium and electronic equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112602273A (en) * 2019-01-11 2021-04-02 华为技术有限公司 Optical processing module and optical processing apparatus
WO2023151500A1 (en) * 2022-02-14 2023-08-17 阿里巴巴达摩院(杭州)科技有限公司 Wireless communication method, gateway, device, and system
CN115967742A (en) * 2022-12-28 2023-04-14 北京佳讯飞鸿电气股份有限公司 Urban railway dispatching communication method, system and cluster
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