CN113923199A - Data communication transmission optimization method and system - Google Patents
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
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- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
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- 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
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/164—Adaptation or special uses of UDP protocol
Abstract
The invention provides a data communication transmission optimization method and a system, comprising the following steps: receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data; extracting state data in the control data, and transmitting the state data to a preset front end; and transmitting the network data packet based on the synchronous sending asynchronous receiving mode. The invention combs the service data of the logic layer, improves the processing capacity of the logic layer by adopting an improved data structure, reduces the resource occupancy rate and the network bandwidth of the server by adopting a proper communication mode according to the data category, and improves the network transmission stability by adding a packet packaging function in the communication module of the underlying network.
Description
Technical Field
The present invention relates to the field of data communication technologies, and in particular, to a method and a system for optimizing data communication transmission.
Background
In the existing control system, a plurality of function control software is generally included, for example, in an Automatic Train Supervision (ATS) system, a plurality of device software are included, including: the system comprises a station extension, a gateway, an application server, foreground equipment (a dispatching and monitoring terminal and a large screen), a communication front-end processor and the like. The gateway receives data of signal systems such as VOBC (vehicle-mounted controller), ZC (Zonecontroller, regional control center), DSU (data base Storage Unit) and the like, the station extension receives data of the interlocking system, the gateway and the station extension send the received data to the application server for unified processing, and the application server sends the data to foreground equipment after processing; the command issued by the dispatching foreground is processed by the application server and then forwarded to the gateway and the station extension set, and the command is issued to the designated equipment and system.
Data communication is performed between devices in the ATS system by using a User Datagram Protocol (UDP), a network data flow direction is as shown in fig. 1, when an intermediate application server sends processed data to a foreground, a plurality of copies are generated by the same data packet according to the number of the foreground, and then the copies are sent to a designated foreground.
The data transmission in the ATS system has the following disadvantages:
1) the internal data are uniformly stored in a logic layer and are divided into static data, dynamic data and change frame data, wherein the static data are configuration data and cannot change in the operation process; the dynamic data is state data and reflects the actual operation condition; the change frame data is to buffer the changed data in a certain period in order to reduce network traffic, and the change frame data is emptied after being updated and sent once. In addition, dynamic data and variable frame data in the logic layer adopt a general set type, and the type needs to be locked when being updated in a multi-thread mode, so that the efficiency is low;
2) the application server is used as a core for data processing and distribution, and a plurality of copies need to be created for each data packet in the distribution process, which is undoubtedly resource-consuming, and the cost for creating the copies tends to increase linearly with the increase of foreground data; with the increase of copies, the occupation of network bandwidth also tends to increase linearly, and particularly, when the scale of the ATS system is larger and larger, a performance bottleneck is easy to occur in data communication forwarding of the application server;
3) although the network sending module adopts a UDP protocol, a synchronous receiving and sending mechanism is adopted, and when a large data packet occurs, the phenomenon of network sending or receiving jamming is easy to occur, so that the instability of network transmission is increased.
In view of the above problems, a new method for optimizing data transmission needs to be provided.
Disclosure of Invention
The invention provides a data communication transmission optimization method and a data communication transmission optimization system, which are used for overcoming the defects in the prior art.
In a first aspect, the present invention provides a data communication transmission optimization method, including:
receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data;
extracting state data in the control data, and transmitting the state data to a preset front end;
and transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
In one embodiment, the receiving and storing control data, merging change data in the control data, and adding a distinguishing identifier attribute to obtain optimized change frame data further includes:
and determining the object type of the change data as a preset multithreading concurrent access type.
In an embodiment, the receiving and storing control data, combining change data in the control data, and adding a distinguishing identifier attribute to obtain optimized change frame data specifically includes:
combining dynamic data and change frame data in the control data, and adding a preset change identifier to the dynamic data to obtain identifier dynamic data;
and packaging the change frame data, acquiring the identification dynamic data with a preset state when the change frame data are to be transmitted, and updating the identification dynamic data with the preset state to obtain the optimized change frame data.
In one embodiment, the extracting the state data in the control data and transmitting the state data to a preset front end specifically includes:
constructing a preset multicast group, and adding all preset front ends into the preset multicast group;
and sending the state data to all preset front ends in the preset multicast group based on the multicast mode.
In an embodiment, the transmitting the network packet based on the synchronous transmission asynchronous reception mode specifically includes:
based on a preset sub-packet threshold value, sub-packet the network data packet at a bottom layer sending end to obtain sub-packet data, and synchronously sending the sub-packet data;
and based on the UDP transmission protocol, asynchronously receiving the packet data at an application layer receiving end, and combining the packet data to obtain the network data packet.
In a second aspect, the present invention further provides a data communication transmission optimization system, including:
the first processing module is used for receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data;
the second processing module is used for extracting state data in the control data and transmitting the state data to a preset front end;
and the third processing module is used for transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
In one embodiment, further comprising:
and the determining module is used for determining the object type of the change data as a preset multithreading concurrent access type.
In a third aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the processor implements the steps of the data communication transmission optimization method according to any one of the above.
In a fourth aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the data communication transmission optimization method according to any one of the above.
In a fifth aspect, the present invention also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the data communication transmission optimization method according to any one of the above.
The data communication transmission optimization method and the data communication transmission optimization system, provided by the invention, have the advantages that the logic layer service data are combed, the logic layer processing capacity is improved by adopting the improved data structure, the resource occupancy rate and the network bandwidth of the server are reduced by adopting a proper communication mode according to the data type, the sub-packet packaging function is added in the underlying network communication module, and the network transmission stability is improved.
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In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of network data transmission of an ATS system provided by the prior art;
fig. 2 is a schematic flow chart of a data communication transmission optimization method provided by the present invention;
FIG. 3 is a flow chart of the application server status data transmission provided by the present invention;
FIG. 4 is a schematic diagram of a packet packaging process for network data transmission provided by the present invention;
fig. 5 is a schematic structural diagram of a data communication transmission optimization system provided by the present invention;
fig. 6 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Aiming at the problem that the internal data transmission efficiency is low in a network control system in the prior art, the invention provides a novel data communication transmission optimization method, which takes an ATS system in a rail transit system as an example, but the scheme of the invention is not limited to the communication problem of the ATS system, and the data transmission of other similar complex data processing scenes can be optimized by the scheme provided by the invention.
Fig. 2 is a schematic flow chart of a data communication transmission optimization method provided by the present invention, as shown in fig. 2, including:
s1, receiving and storing control data, combining the change data in the control data, adding distinguishing identification attributes, and obtaining optimized change frame data;
s2, extracting state data in the control data, and transmitting the state data to a preset front end;
s3, transmitting the network packet based on the synchronous transmission asynchronous reception mode.
Specifically, taking the ATS system as an example, the control data uniformly stored in the logic layer of the ATS system includes static data, dynamic data and change frame data, the data that can change therein, that is, the dynamic data and the change frame data, are uniformly merged, the identification attribute that distinguishes the static data from the dynamic data is added to the merged dynamic data object, the optimized change frame data is used, the change frame buffer space is saved, and when data is subsequently forwarded, only the changed data portion needs to be read, so that the data transmission processing speed is greatly increased.
The invention broadcasts and sends the state data according to the multicast mode without establishing a data copy for the state data sent to each foreground independently, thereby effectively saving the transmission resources of the application server.
In addition, aiming at the problems that a network sending module adopts a UDP transmission protocol and a synchronous receiving and sending mechanism adopted at present is easy to generate a network forwarding bottleneck, the invention provides a method for converting the synchronous receiving and sending mechanism into synchronous sending and asynchronous receiving to transmit a data packet, and further improves the network transmission stability.
The invention combs the service data of the logic layer, improves the processing capacity of the logic layer by adopting an improved data structure, reduces the resource occupancy rate and the network bandwidth of the server by adopting a proper communication mode according to the data category, and improves the network transmission stability by adding a packet packaging function in the communication module of the underlying network.
Based on the above embodiment, the receiving and storing the control data, merging the change data in the control data, and adding the distinguishing identifier attribute to obtain the optimized change frame data further includes:
and determining the object type of the change data as a preset multithreading concurrent access type.
It can be understood that the dynamic data and the changing frame data stored in the logic layer adopt a generic set type, which needs to be locked when updating in a multi-thread mode, and thus the efficiency is low, so that the invention adopts the object type of the dynamic data into a ConcurrentDirectionary type, which is provided by a network frame. Specifically, if the Dictionary class is required to be used in a multi-threaded environment before NET4.0, in addition to thread synchronization itself to ensure thread security, if a similar thread security scheme is to be implemented, a completely new thread security Dictionary is created, or simply a Dictionary object is packaged by a class, and a locking mechanism is added to all methods, which is called Dictionary + Lock.
Compared with a Dictionary + Lock mode, ConcurrentDictionary belongs to a Dictionary of thread safety, and supports multithreading concurrent access without separate locking.
The invention processes dynamic data by introducing concurrent multithreading object types, simplifies the processing flow of data transmission and improves the data processing speed compared with the prior art that each thread needs to be locked independently.
Based on any of the above embodiments, step S1 of the method specifically includes:
combining dynamic data and change frame data in the control data, and adding a preset change identifier to the dynamic data to obtain identifier dynamic data;
and packaging the change frame data, acquiring the identification dynamic data with a preset state when the change frame data are to be transmitted, and updating the identification dynamic data with the preset state to obtain the optimized change frame data.
Specifically, in the ATS system, the present invention merges dynamic data and changed frame data in a logical layer, and adds a changed attribute to a dynamic data object, where static data is configuration data and does not change during operation, and no operation is required here, after the above optimization operation, and when a data packet is distributed in the prior art, a separate copy needs to be created for downward distribution, and when dynamic data is updated, a copy of a dynamic data object does not need to be created and added to a changed frame data cache, and because there is no changed frame cache, a lock does not need to be used.
When data transmission is carried out, the data packets are packaged, for the combined change frame data packet, only the object with the changed attribute state of true added in the dynamic data object needs to be traversed, the change of the dynamic data is shown here, the data is marked as true, all data does not need to be traversed, and the efficiency is greatly improved.
According to the invention, by optimizing the cache structure of the logic layer in data transmission, the network data processing speed is increased, and the network throughput is improved.
Based on any of the above embodiments, step S2 of the method specifically includes:
constructing a preset multicast group, and adding all preset front ends into the preset multicast group;
and sending the state data to all preset front ends in the preset multicast group based on the multicast mode.
Specifically, aiming at a core processing part, namely an application server in an ATS system, received signal system data and interlocking system data are processed uniformly and then are sent to a plurality of preset front ends, namely, a plurality of foreground, the processed data are originally sent, a plurality of copies of the data sent each time are respectively established and then sent to each foreground, and a forwarding bottleneck is easy to appear.
Here, as shown in fig. 3, before multicast transmission of a message, the ATS system adds all corresponding foreground devices to the same multicast group, and then the application server transmits status data to a network device, such as a switch or a router, to complete data copy, and then transmits the status data to the multicast group, so that each foreground device receives the status data.
The invention avoids creating excessive data copies by reducing the resource occupation condition of the application server, and reduces the memory burden of the application server and the network burden from the application server to the switch equipment.
Based on any of the above embodiments, step S3 in the method specifically includes:
based on a preset sub-packet threshold value, sub-packet the network data packet at a bottom layer sending end to obtain sub-packet data, and synchronously sending the sub-packet data;
and based on the UDP transmission protocol, asynchronously receiving the packet data at an application layer receiving end, and combining the packet data to obtain the network data packet.
Specifically, as shown in fig. 4, a data packet is packetized and configured according to a designated size at a sending end, that is, at an ATS application a side, by a bottom layer sending module, a packetization threshold value is supported at a receiving end, that is, at an ATS application B side, and service data is sent to an application layer after being packetized according to a protocol specification, and the packetization and packetization process is transparent to the application layer, and meanwhile, the confidentiality of the packetization threshold value can be dynamically adjusted according to actual conditions in the field, so that an optimal effect is achieved.
Aiming at the synchronous receiving and dispatching mode adopting UDP transmission protocol in the prior art, the invention changes the synchronous receiving and dispatching mode into the asynchronous receiving and dispatching mode of synchronous sending, and can effectively improve the utilization rate of system resources and the processing capacity of the system through asynchronous receiving.
The invention effectively improves the stability of network transmission by optimizing the data packet transmission mode of the network transmission module.
The data communication transmission optimization system provided by the present invention is described below, and the data communication transmission optimization system described below and the data communication transmission optimization method described above may be referred to correspondingly.
Fig. 5 is a schematic structural diagram of a data communication transmission optimization system provided in the present invention, as shown in fig. 5, including: a first processing module 51, a second processing module 52 and a third processing module 53, wherein:
the first processing module 51 is configured to receive and store control data, merge change data in the control data, and add a distinguishing identifier attribute to obtain optimized change frame data; the second processing module 52 is configured to extract status data in the control data, and transmit the status data to a preset front end; the third processing module 53 is configured to transmit the network packet based on the synchronous transmission asynchronous reception mode.
The invention combs the service data of the logic layer, improves the processing capacity of the logic layer by adopting an improved data structure, reduces the resource occupancy rate and the network bandwidth of the server by adopting a proper communication mode according to the data category, and improves the network transmission stability by adding a packet packaging function in the communication module of the underlying network.
Based on the above embodiment, the system further includes a determining module 54, where the determining module 54 is configured to determine that the object type of the variant data is a preset multithreading concurrent access type.
The invention processes dynamic data by introducing concurrent multithreading object types, simplifies the processing flow of data transmission and improves the data processing speed compared with the prior art that each thread needs to be locked independently.
Fig. 6 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 6: a processor (processor)610, a communication Interface (Communications Interface)620, a memory (memory) 630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to perform a data communication transport optimization method comprising: receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data; extracting state data in the control data, and transmitting the state data to a preset front end; and transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute 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), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being storable on a non-transitory computer-readable storage medium, the computer program, when executed by a processor, being capable of executing the data communication transmission optimization method provided by the above methods, the method including: receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data; extracting state data in the control data, and transmitting the state data to a preset front end; and transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing a method for optimizing data communication transmission provided by the above methods, the method including: receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data; extracting state data in the control data, and transmitting the state data to a preset front end; and transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for optimizing data communication transmission, comprising:
receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data;
extracting state data in the control data, and transmitting the state data to a preset front end;
and transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
2. The data communication transmission optimization method according to claim 1, wherein the receiving and storing control data, combining change data in the control data, and adding a distinguishing identifier attribute to obtain optimized change frame data further comprises:
and determining the object type of the change data as a preset multithreading concurrent access type.
3. The data communication transmission optimization method according to claim 1 or 2, wherein the receiving and storing control data, combining change data in the control data, and adding a distinguishing identifier attribute to obtain optimized change frame data specifically includes:
combining dynamic data and change frame data in the control data, and adding a preset change identifier to the dynamic data to obtain identifier dynamic data;
and packaging the change frame data, acquiring the identification dynamic data with a preset state when the change frame data are to be transmitted, and updating the identification dynamic data with the preset state to obtain the optimized change frame data.
4. The data communication transmission optimization method according to claim 1, wherein the extracting the state data in the control data and transmitting the state data to a preset front end specifically includes:
constructing a preset multicast group, and adding all preset front ends into the preset multicast group;
and sending the state data to all preset front ends in the preset multicast group based on the multicast mode.
5. The method according to claim 1, wherein the transmitting network packets based on the synchronous-to-asynchronous-receive mode specifically comprises:
based on a preset sub-packet threshold value, sub-packet the network data packet at a bottom layer sending end to obtain sub-packet data, and synchronously sending the sub-packet data;
and based on the UDP transmission protocol, asynchronously receiving the packet data at an application layer receiving end, and combining the packet data to obtain the network data packet.
6. A data communication transmission optimization system, comprising:
the first processing module is used for receiving and storing control data, combining change data in the control data, and adding a distinguishing identification attribute to obtain optimized change frame data;
the second processing module is used for extracting state data in the control data and transmitting the state data to a preset front end;
and the third processing module is used for transmitting the network data packet based on the synchronous sending asynchronous receiving mode.
7. The data communication transmission optimization system of claim 6, further comprising:
and the determining module is used for determining the object type of the change data as a preset multithreading concurrent access type.
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 when executing the program implements the steps of the data communication transmission optimization method according to any one of claims 1 to 5.
9. A non-transitory computer readable storage medium, having stored thereon a computer program, wherein the computer program, when being executed by a processor, is adapted to carry out the steps of the data communication transmission optimization method according to any one of claims 1 to 5.
10. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements the steps of the data communication transmission optimization method according to any one of claims 1 to 5.
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