CN110138593B - SMC network-based distributed system simulation communication system - Google Patents
SMC network-based distributed system simulation communication system Download PDFInfo
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- CN110138593B CN110138593B CN201910290422.XA CN201910290422A CN110138593B CN 110138593 B CN110138593 B CN 110138593B CN 201910290422 A CN201910290422 A CN 201910290422A CN 110138593 B CN110138593 B CN 110138593B
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- 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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- 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
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H04L67/14—Session management
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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]
Abstract
The invention discloses a distributed system simulation communication system based on an SMC network, which comprises a distributed system simulation model of the SMC, an SMC three-layer network architecture and a simulation time sequence of network time service; the SMC distributed system simulation model comprises a simulation control management module, an environment simulation module, an entity A simulation module, an entity B simulation module, an entity C simulation module and a data collection and analysis module; the SMC three-layer network architecture comprises server nodes, class leader nodes and common nodes; the simulation time sequence of the network time service is promoted by adopting a client/server mode. The service time reference of the invention is realized by network time service, thus improving the real-time property, reliability and data transmission capability of the multi-type entity collaborative simulation and meeting the time precision requirement of hundred millisecond precision in the service operation process.
Description
Technical Field
The invention relates to the field of computers, in particular to a distributed system simulation communication system based on an SMC network.
Background
In the process of task application and distributed system simulation in recent years, the requirements of system development, scientific research and production tasks on the precision and scale of the distributed simulation system are increasingly felt. The information interaction of the distributed system simulation system spans various networks, professional fields of all parts are different, and the triggering conditions of the interacted information are complex, the data size is large, and the real-time requirement difference is large. The traditional single on-demand or multicast communication mechanism has high requirements on the performance of a terminal computer and large load pressure of core switching equipment; or the transmission stability and the real-time performance are poor, the simulation reliability is influenced, and the bottleneck effect is generated on the function improvement and the scale expansion of the system. The problems can be solved or alleviated to a certain extent by replacing the network communication equipment with better performance or respectively making a communication scheme for each part, but the network communication equipment faces high economic and labor cost, and the improvement degree is limited and is difficult to continue.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a distributed system simulation communication system based on an SMC network, wherein a service time reference is realized through network time service, so that the real-time performance, the reliability and the data transmission capability of multi-type entity collaborative simulation are improved, and the time precision requirement of hundred millisecond precision in the service operation process is met.
The invention provides a distributed system simulation communication system based on an SMC network, which comprises a distributed system simulation model of the SMC, an SMC three-layer network architecture and a simulation time sequence of network time service:
the SMC distributed system simulation model comprises a simulation control management module, an environment simulation module, an entity A simulation module, an entity B simulation module, an entity C simulation module and a data collection and analysis module;
the SMC three-layer network architecture comprises server nodes, class leader nodes and common nodes; wherein S refers to a main server node, M refers to a team leader node, and C refers to a client node, namely a common node;
the server node is used for managing and controlling all the team leader nodes in the network and is responsible for activating and closing the team leader nodes;
the team leader node is used for controlling all common nodes under the local branch system;
the server node, the class leader node and the common node determine the routing protocol of the SMC according to the size of the transmission data volume, and perform data transmission;
the server node, the class leader node and the common node realize hierarchical management on a three-layer network through dynamic management of simulation nodes of heartbeat detection;
the simulation time sequence of the network time service is promoted by adopting a client/server mode;
the server is configured in the simulation control management module and is used for being responsible for logic time control, determining a logic time reference and sending the logic time to all nodes in the network;
the client is a common node, acquires time from the server through the network, sets the time as local time, and has the fundamental purpose of providing a calling interface for initialization, data transceiving and file transceiving to the user layer and maintaining a buffer area for receiving data.
Preferably, the simulation management module is configured to provide a simulation parameter editing interface for the simulation control management unit, issue the edited parameters to the corresponding module, and provide simulation scene management at the same time, so as to support three modes, namely real-time mode, super-real-time mode and post-playback mode; the environment simulation module is used for providing external environment parameters influencing the running of the entity in real time in the simulation process; the entity A simulation module, the entity B simulation module and the entity C simulation module are all used for simulating the confrontation entities of the red and blue parties; and the data collection and analysis module is used for collecting the entity operation process data and evaluating the entity indexes.
Preferably, the server node is a manager of the whole system and is used for maintaining the global network topology map, sending the global network topology map to the team leader node and supporting data transmission among the subsystems; the server node is used for determining the team leader node under each subsystem by adopting a first-come-first-obtain principle; sensing the downtime of a computer where the class node is located through heartbeat detection, removing the class node from the global network topological graph, and electing the class node which is registered firstly under the subsystem at the moment as the class node; the team leader node is used for broadcasting data to all nodes in the local branch system and performing unified management on the internal and external interaction of the local branch system; after the common node runs application software and is initialized, the common node is continuously registered with the team leader node, and the team leader node is added into a network topological graph of the branch system; after the common node runs the application software and the program exits, the branch system team leader node detects and senses through heartbeat and deletes the node from the branch system network topological graph.
Preferably, the server node runs a server. The team leader node runs a Monitorservice.exe program; the common node runs application software and loads a dynamic communication library CommunicateDll.
Preferably, the data transmission mode is a UDP-based broadcast mode inside the subsystem and between the team leader node and the common node;
between subsystems, between team leader nodes and team leader nodes, the data transmission mode is a point-to-point transmission mode based on UDP;
1) data transmission less than threshold:
the data smaller than the threshold value is sent to the team leader node of the subsystem through a communication layer package UDP, and the team leader node transmits the data to a target team leader node for broadcasting or direct broadcasting;
2) data transmission greater than a threshold;
and the data is larger than the threshold value, the data is transmitted to the server through a communication layer package TCP, the notice information UDP is sent to the team leader node, the team leader node is transmitted to a target team leader node for broadcasting or direct broadcasting, and the receiving end receives the notice information and then accesses the data of the server through the TCP connection.
Preferably, the team leader node is a manager of the subsystem and is used for data forwarding;
1) data forwarding
The forwarding policy is: the data of the target subsystem is locally broadcast;
if the target subsystem is the other subsystem, the target subsystem is directly forwarded to the team leader nodes of the other subsystem according to the routing table downloaded from the server;
2) subsystem internal manager
The common nodes can register with the team leader nodes of the local branch system in the initialization process, and the team leader nodes maintain the internal topological graph of the local branch system through information elements and a heartbeat detection mechanism provided by the node registration;
the common node is used for providing a calling interface for initialization, data transceiving and file transceiving to a user layer, and maintaining a buffer area for receiving data.
Preferably, the logical time reference is implemented via a network time service.
Preferably, the entity a simulation module, the entity B simulation module and the entity C simulation module are any one of all nodes; the simulation control management module comprises a simulation operation control module and a logic time reference module; and the simulation operation control module is used for controlling logic time, including resetting, stepping back, backing, pausing, advancing, stepping, accelerating, decelerating and time setting.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the simulation communication system of the distributed system, the service time reference is realized through network time service, and the time precision requirement of hundred millisecond precision in the service operation process is met;
2. the invention improves the real-time property, reliability and data transmission capability of the multi-type entity collaborative simulation, and has good transmission stability and real-time property;
3. the invention is beneficial to improving the simulation reliability and scale expansion for the functions of the system, does not need to replace network communication equipment, and reduces the reconstruction cost.
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Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a block diagram of a system architecture of an embodiment of the SMC network based distributed system emulation communication system of the present invention;
FIG. 2 is a global network topology diagram of an embodiment of the SMC network based distributed system simulation communication system of the present invention;
FIG. 3 is a schematic diagram of an intra-network segment data transmission mode of an embodiment of a distributed system simulation communication system based on an SMC network according to the present invention;
FIG. 4 is a schematic diagram of inter-network-segment network timing in an embodiment of the SMC network-based distributed system simulation communication system of the present invention;
FIG. 5 is a schematic diagram of an intra-network segment data transmission mode of an embodiment of a distributed system simulation communication system based on an SMC network according to the present invention;
FIG. 6 is a schematic diagram illustrating network timing between network segments according to another embodiment of the SMC network-based distributed system simulation communication system of the present invention;
fig. 7 is a schematic diagram of another network timing in the embodiment of the SMC network-based distributed system simulation communication system of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
In one embodiment, a distributed system simulation communication system based on an SMC network comprises a distributed system simulation model of an SMC, an SMC three-layer network architecture and a simulation time sequence of network time service:
the SMC distributed system simulation model comprises a simulation control management module, an environment simulation module, an entity A simulation module, an entity B simulation module, an entity C simulation module and a data collection and analysis module;
the SMC three-layer network architecture comprises server nodes, class leader nodes and common nodes;
The simulation time sequence of the network time service is promoted by adopting a client/server mode;
The present invention will be described in detail below.
As shown in fig. 1, the present invention relates to a multi-type entity collaborative simulation performance evaluation system of a distributed system simulation communication system based on SMC network, wherein the multi-type entity collaborative simulation performance evaluation system is composed of a simulation control management module, an environment simulation module, an entity a simulation module, an entity B simulation module, an entity C simulation module, a data collection and analysis module, and the like. The simulation management module is used as a simulation control management unit to provide a simulation parameter editing interface, issues edited parameters to the corresponding module, provides simulation scene management, and supports three modes of real-time, super-real-time and post-playback. And providing external environment parameters influencing the running of the entity in real time in the simulation process of the environment simulation module. An entity simulation module: the simulation system comprises an entity A simulation module, an entity B simulation module and an entity C, wherein the entity A simulation module simulates the countermeasures of the red and blue parties. And the data collection and analysis module collects entity operation process data and evaluates entity indexes.
As shown in fig. 2, the whole system of the present invention is divided into: server nodes, team leader nodes and common nodes. The server node runs a Server.exe program; the team leader node runs a Monitorservice.exe program; the common node runs application software and loads a dynamic communication library CommunicateDll. The common node is used for providing a calling interface for initialization, data transceiving and file transceiving to a user layer, and maintaining a buffer area for receiving data. The entity A simulation module, the entity B simulation module and the entity C simulation module are any one of all nodes.
The server nodes do not directly participate in direct data transmission, but serve as managers of the whole system and are used for maintaining the global network topological graph, and meanwhile, the global network topological graph is issued to the team leader nodes to support data transmission among the subsystems. And the server nodes are used for determining the class leader nodes under each subsystem by adopting a first-come-first-obtained principle, sensing the downtime of a computer where the class leader nodes are positioned by heartbeat detection, removing the class leader nodes from the global network topological graph, and selecting the class leader nodes registered firstly under the subsystem at the moment. The server node stores some basic metadata such as IP addresses within the subsystems. Meanwhile, the real-time monitoring of the computing nodes under each subsystem can be carried out by transplanting some management software. In addition, an error discovery module can be realized in the system, the design of a redundancy function is carried out, and the fault tolerance of the system is further improved. In any case, all management related tasks may be performed on the server.
The team leader node is used for broadcasting data to all nodes in the local branch system and performing unified management on the internal and external interaction of the local branch system; after the common node runs application software and is initialized, the common node is continuously registered with the team leader node, and the team leader node is added into a network topological graph of the branch system; after the common node runs the application software and the program exits, the branch system team leader node detects and senses through heartbeat and deletes the node from the branch system network topological graph. On one hand, the team leader nodes broadcast data to all nodes in the subsystem, and on the other hand, the subsystem is subjected to unified management on internal and external interaction, so that the purpose of data interaction with all nodes of the subsystem can be achieved only by sending the data to the team leader nodes of the target subsystem by the rest subsystems. It should be noted that the access layer switch in the local area network of the system needs to be configured to isolate the function of the broadcast data packet, so as to avoid the occurrence of data flooding and waste of network bandwidth.
As shown in fig. 3 and 4, in order to maximize the utilization of the network bandwidth, the transmission mode is determined according to the size of the transmission data volume. In terms of data frames, the routing protocol of the SMC comprises a class leader node and a common node inside subsystems, the data transmission mode is a broadcast mode based on UDP, the class leader node and the class leader node between the subsystems, and the data transmission mode is a point-to-point transmission mode based on UDP. Meanwhile, in order to maximally utilize the network bandwidth, the transmission mode is determined according to the size of the transmission data: data transmission less than a threshold, data transmission greater than a threshold;
the first mode is as follows: data transmission less than threshold: the data smaller than the threshold value is sent to the team leader node of the subsystem through a communication layer package UDP, and the team leader node transmits the data to a target team leader node for broadcasting or direct broadcasting;
and a second mode: data transmission greater than a threshold; and the data is larger than the threshold value, the data is transmitted to the server through a communication layer package TCP, the notice information UDP is sent to the team leader node, the team leader node is transmitted to a target team leader node for broadcasting or direct broadcasting, and the receiving end receives the notice information and then accesses the data of the server through the TCP connection.
Specifically, mode one: and a transceiving step in which the data volume is less than a threshold:
1) the receipt is packaged and sent to the team leader node of the subsystem through a communication layer; 2) the branch system team leader node frames, reads the target branch system identification, and determines the IP address of the target branch system team leader node according to the corresponding table entry in the routing table; the routing table is that the team leader node requests the server to update to the latest routing table every second; 3) the branch system team leader node resends the data to the target branch system team leader node; 4) after receiving the data packet, the class leader node of the target subsystem confirms that the data packet is sent to the local subsystem; 5) and the target subsystem team leader node broadcasts according to the stored port numbers of all software operation.
And a second mode: and a receiving and sending step that the data volume is larger than a threshold value:
1) the communication sublayer marks the buffer according to the first address and the length of the transmitted buffer, and the mark name is 'data length-ip-year, month, day, hour, minute and second millisecond'; 2) the communication sublayer uploads the data to the main server node, and simultaneously sends the data identifier to the target node, wherein the data identifier sending process is similar to the mode one: the data volume is less than the receiving and sending of the threshold value are consistent; 3) the main server stores the data into a Map maintained locally after receiving the data, wherein a main key of the Map is a data identifier; 4) and after receiving the data identification, the target node downloads data from the main server to the local buffer area according to the identification content.
The team leader node is a manager of the subsystem and is used for data forwarding;
1) data forwarding: the forwarding policy is: the data of the target subsystem is locally broadcast;
if the target subsystem is the other subsystem, the target subsystem is directly forwarded to the team leader nodes of the other subsystem according to the routing table downloaded from the server;
2) subsystem internal manager: the common nodes can register with the team leader nodes of the branch system in the initialization process, and the team leader nodes maintain the internal topological graph of the branch system through information elements and a heartbeat detection mechanism provided by the node registration.
As shown in fig. 5 and 6, the simulation timing advance based on network time service is realized in a client/server mode, and the logic time reference is realized through network time service, wherein the simulation control management module is used as a server to take charge of logic time control, determine the logic time reference, and send the logic time to all nodes in the system through the network. . As shown in fig. 7, the simulation control management module includes a simulation operation control module and a logic time reference module; and the simulation operation control module is used for controlling logic time, including resetting, stepping back, backing, pausing, advancing, stepping, accelerating, decelerating and time setting. And the other nodes receive the logic time sent by the simulation control management module and set the logic time as local logic time.
In summary, the distributed system simulation communication system of the present invention realizes the service time reference through network time service, and meets the time precision requirement of hundred millisecond precision in the service operation process. The invention improves the real-time property, reliability and data transmission capability of the multi-type entity collaborative simulation, and has good transmission stability and real-time property. The invention is beneficial to improving the simulation reliability and scale expansion for the functions of the system, does not need to replace network communication equipment, and reduces the reconstruction cost.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (8)
1. The utility model provides a distributed system simulation communication system based on SMC network which characterized in that, includes SMC's distributed system simulation model, SMC three-layer network framework, the simulation time sequence of network time service:
the SMC distributed system simulation model comprises a simulation control management module, an environment simulation module, an entity A simulation module, an entity B simulation module, an entity C simulation module and a data collection and analysis module;
the SMC three-layer network architecture comprises server nodes, class leader nodes and common nodes;
the server node is used for managing and controlling all the team leader nodes in the network and is responsible for activating and closing the team leader nodes;
the team leader node is used for controlling all common nodes under the local branch system;
the server node, the class leader node and the common node determine the routing protocol of the SMC according to the size of the transmission data volume, and perform data transmission;
the server node, the class leader node and the common node realize hierarchical management on a three-layer network through dynamic management of simulation nodes of heartbeat detection;
the simulation time sequence of the network time service is promoted by adopting a client/server mode;
the server is configured in the simulation control management module and is used for being responsible for logic time control, determining a logic time reference and sending the logic time to all nodes in the network;
the client is a common node, acquires time from the server through the network, and sets the time as local time.
2. The SMC network-based distributed system emulation communication system of claim 1,
the simulation management module is used for providing a simulation parameter editing interface for the simulation control management unit, issuing the edited parameters to the corresponding module, providing simulation scene management and supporting three modes of real-time, super-real-time and post-playback;
the environment simulation module is used for providing external environment parameters influencing the running of the entity in real time in the simulation process;
the entity A simulation module, the entity B simulation module and the entity C simulation module are all used for simulating the confrontation entities of the red and blue parties;
and the data collection and analysis module is used for collecting the entity operation process data and evaluating the entity indexes.
3. The SMC network-based distributed system emulation communication system of claim 1,
the server node is a manager of the whole system and is used for maintaining the global network topological graph, simultaneously sending the global network topological graph to the team leader node and supporting data transmission among the subsystems;
the server node is used for determining the team leader node under each subsystem by adopting a first-come-first-obtain principle; sensing the downtime of a computer where the class node is located through heartbeat detection, removing the class node from the global network topological graph, and electing the class node which is registered firstly under the subsystem at the moment as the class node;
the team leader node is used for broadcasting data to all nodes in the local branch system and performing unified management on the internal and external interaction of the local branch system;
after the common node runs application software and is initialized, the common node is continuously registered with the team leader node, and the team leader node is added into a network topological graph of the branch system; after the common node runs the application software and the program exits, the branch system team leader node detects and senses through heartbeat and deletes the node from the branch system network topological graph.
4. The SMC network-based distributed system emulation communication system of claim 3,
the server node runs a Server.exe program;
the team leader node runs a Monitorservice.exe program;
the common node runs application software and loads a dynamic communication library CommunicateDll.
5. The SMC network-based distributed system emulation communication system of claim 1,
in the subsystem, between the team leader node and the common node, the data transmission mode is a broadcast mode based on UDP;
between subsystems, between team leader nodes and team leader nodes, the data transmission mode is a point-to-point transmission mode based on UDP;
1) data transmission less than threshold:
the data smaller than the threshold value is sent to the team leader node of the subsystem through a communication layer package UDP, and the team leader node transmits the data to a target team leader node for broadcasting or direct broadcasting;
2) data transmission greater than a threshold;
and the data is larger than the threshold value, the data is transmitted to the server through a communication layer package TCP, the notice information UDP is sent to the team leader node, the team leader node is transmitted to a target team leader node for broadcasting or direct broadcasting, and the receiving end receives the notice information and then accesses the data of the server through the TCP connection.
6. The SMC network-based distributed system emulation communication system of claim 1, wherein a team leader node is a branch system administrator for data forwarding;
1) data forwarding
The forwarding policy is: the data of the target subsystem is locally broadcast;
if the target subsystem is the other subsystem, the target subsystem is directly forwarded to the team leader nodes of the other subsystem according to the routing table downloaded from the server;
2) subsystem internal manager
The common nodes can register with the team leader nodes of the local branch system in the initialization process, and the team leader nodes maintain the internal topological graph of the local branch system through information elements and a heartbeat detection mechanism provided by the node registration;
the common node is used for providing a calling interface for initialization, data transceiving and file transceiving to a user layer, and maintaining a buffer area for receiving data.
7. The SMC network-based distributed system simulating communication system of claim 1, wherein the logical time reference is implemented by a network time service.
8. The SMC network-based distributed system emulation communication system of claim 1,
the entity A simulation module, the entity B simulation module and the entity C simulation module are any one of all nodes;
the simulation control management module comprises a simulation operation control module and a logic time reference module;
and the simulation operation control module is used for controlling logic time, including resetting, stepping back, backing, pausing, advancing, stepping, accelerating, decelerating and time setting.
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