CN105915304B - A kind of system integration project demonstration and verification method towards satellite mobile communication - Google Patents
A kind of system integration project demonstration and verification method towards satellite mobile communication Download PDFInfo
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Abstract
A kind of system integration project demonstration and verification method towards satellite mobile communication of the invention, configured by simulating scenes, what is created and complete satellite mobile communication is wirelessly transferred emulation and agreement Propagation Simulation, statistics obtains the communication performance of single link and the system overall situation, completes to satellite mobile communication system design and the assessment of satellite communication key technology.Simulation model is formed by the nodal analysis method needed for storage model data creation, channel model and protocol model, so that simulation process has excellent scalability and repeatability, and by numerous and diverse Math model encapsulation, its data and position are changed as needed, so that the foundation of simulation model is conciser, the generality of its adaptation is improved；Emulated by the network, link and agreement that carry out successively, realize and emulate different satellite protocols, different satellite network topologys, different satellite system configurations, different satellite communication correlation techniques, so as to fulfill to Satellite Communication System Design, the related evaluation of communication technology of satellite.
Description
Technical field
The present invention relates to satellite mobile communication to emulate field, is specially a kind of system integration project towards satellite mobile communication
Demonstration and verification method.
Background technology
In recent years, as the progress of satellite technology, satellite mobile communication are raw in national defense construction, economic development and society
It is living etc. all to play more and more important effect.Communication technology of satellite, which is faced with high time delay, high decline etc., different and ground
The communication problem of communication system, while compared to ground system, satellite communication system cost is high, construction is complicated, and is not easy
Transformation.
Similar with GCS Ground Communication System, the development of communication technology of satellite also be unable to do without the support of simulation test platform, system
The assessment system scheme and the performance of algorithm that the simulating, verifying of level can quickly, inexpensive, payload on quantitative analysis star
Algorithm and framework improve the influence to system-wide performance, so as to reduce risk, avoid just burying problem and risk in design level,
Meet the future trend of payload design and development.Meanwhile the transporting of satellite-ground link is intuitively demonstrated by simulation software
Energy, business offer ability etc., so that the advance of vivider intuitively display technique scheme.
Current more popular following four sections of network simulators are as follows：
1.NS2：NS2 (Network Simulator version 2) network simulator is a kind of network of object-oriented
Emulator.NS2 softwares are furnished with simulation process dynamic watcher, after simulation run, can dynamically watch the operation of emulation
Process, observes the data of tracking.NS2 is powerful, and scalability is strong, and execution efficiency is high, is widely used to LAN, wide area
The emulation of net, wireless mobile network and satellite network.
2.OMNeT++:OMNeT++ is a kind of Discrete Event Simulator, possesses insertion type simulation kernel and powerful figure
Interface, can run on multiple operating system platforms, possess programming, and the function such as debugging and tracking support simultaneously supports distribution simultaneously
Row emulation.
3.DTNsim：DTNsim is the discrete event simulator write with Java language, for simulating DTN
In (Distributed Transient Network, the transient network of distribution) Transmission or failure when message storage turn
Hair.DTNsim also supports the burst of message to transmit.If encountering connection closed in a message transfer process, and there is message
Burst success is received by node, then the node will wait the arrival of remaining message burst.
4.ONE：ONE is suitable for the Routing Protocol of DTN network environments and the simulator of application study analysis, has discrete thing
The characteristics of part driving, object-oriented and simulation real network environment.ONE is by mobility model, DTN routes and visual figure circle
Face integrates, and is very easy to be extended, and can provide substantial amounts of analysis model and result report.
Although there are very outstanding simulation performance in this four sections of simulation softwares, in emulation satellite mobile communication scheme
When, the shortcomings that there is that can not go beyond：NS2 lacks supports DTN network environments well.Meanwhile NS2 carries out multinode emulation
When, it is impossible to real data is transmitted, this leads to not the transmission for carrying out truthful data.It is special that OMNET++ needs user oneself to realize
Determine function.DTNsim is the simulator exclusively for DTN Environment Designs.But it simply merely focuses on the imitative of route
Very.Meanwhile when multinode emulates, it is impossible to carry out the transmission of truthful data.ONE network simulators only realize DTN agreements
BP parts, when carrying out multinode emulation, simply transmit virtual data (information of data message), can neither realize truthful data
Transmission can not embody data flow.
In conclusion NS2 and OMNET++ network simulators lack to DTN network environment good supports, user is needed to carry out special
Fixed exploitation.And although DTNsim and ONE network simulators are the simulators exclusively for DTN Environment Designs, but have
The defects of respective.And when multinode emulates, it can only all simulate virtual data transmission, it is impossible to truthful data transmission is carried out,
It cannot meet the requirement of satellite mobile communication emulation.
The content of the invention
For problems of the prior art, the present invention provides a kind of system integration project towards satellite mobile communication and drills
Show verification method, configured by simulating scenes, create and complete satellite mobile communication be wirelessly transferred emulation and agreement transmission is imitative
Very, statistics obtains the communication performance of single link and the system overall situation, so as to complete to satellite mobile communication system design and satellite
The assessment of Key Communication Technology.
The present invention is to be achieved through the following technical solutions：
A kind of system integration project demonstration and verification method towards satellite mobile communication, includes the following steps,
Step 1, the step of model creation, according to the demand of the system integration project of satellite mobile communication, completes satellite movement
The establishment of communication simulation model；The satellite mobile communication simulation model includes supporting the simulation model of extension and does not support to expand
The simulation model of exhibition, supports that the simulation model of extension includes satellite mobile communication node simulation model and satellite communication channel emulates
Model；
Step 2, the step of network creation, according to satellite mobile communication node simulation model, creates required amount of satellite
Mobile communications nodes, and change the configuration parameter of satellite mobile communication node；Satellite is changed according to the demand of artificial network topology
Position of the mobile communications nodes in artificial network topology；Satellite mobile communication node by determining configuration parameter and position is built
Obtain corresponding artificial network topology；
Step 3, the step of network simulation, carries out service condition renewal and location updating, if obtaining to artificial network topology
Dry new service request and handover request；Moved by obtaining satellite to the wireless resource management of service request and handover request
Communication link, and in units of link store all nodes of respective links business information, positional information and wireless resource information；
Step 4, all satellite mobile communication links are carried out link calculation successively and link level arrive by the step of link simulation
System-level mapping, obtains the corresponding carrier-to-noise ratio of each link, physical layer time delay and physical layer Packet Error Ratio；Deposited in units of link
Store up carrier-to-noise ratio, physical layer time delay and the physical layer Packet Error Ratio of respective links；
Step 5, the step of protocol emulation, according to the Packet Error Ratio of the corresponding physical layer time delay of each link and physical layer to institute
There is link to carry out protocol emulation successively, obtain the corresponding cutting off rate of each link, network layer packet loss, network layer Packet Error Ratio and net
Network layers time delay；Network layer packet loss, network layer Packet Error Ratio and the network layer time delay of respective links are stored in units of link；
Step 6, circulated in the simulation time set using protocol frame as step-length and perform step 3 to 5, completed to towards satellite
The system integration project demonstration and verification of mobile communication.
Preferably, further include the artificial intelligence that will be stored in units of link and save as figure or document form, and show
The step of；The artificial intelligence includes business information, positional information, wireless resource information, the load of all nodes of respective links
Make an uproar ratio, physical layer time delay, physical layer Packet Error Ratio, network layer packet loss, network layer Packet Error Ratio and network layer time delay.
Preferably, when simulation model is created in step 1, using object oriented designing, structure includes satellite communication node
The satellite mobile communication Math module of module, satellite communication channel module and satellite communication protocols module；Satellite is moved
Communication simulation basic module carries out model specialization and stores to obtain simulation model library data, is stored in simulation model library module, root
According to the demand of the system integration project of satellite mobile communication, choose corresponding simulation model library data creation and obtain satellite mobile communication
Simulation model.
Preferably, in step 3, wireless resource management includes route querying, call admission judgement, radio resource allocation and cuts
Change management.
Compared with prior art, the present invention has technique effect beneficial below：
The method of the invention passes through the nodal analysis method needed for storage model data creation, channel model and protocol model shape
Into simulation model so that simulation process has excellent a scalability and repeatability, and by numerous and diverse Math model encapsulation,
Its data and position are changed as needed so that the foundation of simulation model is conciser, improves the generality of its adaptation；By according to
Network, link and the agreement of secondary progress are emulated, and are realized and are emulated different satellite protocols, different satellite network topologys, difference
Satellite system configuration, different satellite communication correlation technique, so as to fulfill to Satellite Communication System Design, communication technology of satellite
Related evaluation.
Further, by the way that the artificial intelligence stored in units of link is saved as figure or document form, and show,
Preferably provide the entrance of access and operation to the user, can easily manage simulation model library, configuration simulating scenes, control
Simulation process, the tracking of tracking simulation parameter, displaying simulation result, displaying simulating scenes so that emulation platform has good friendship
Mutual property.
Further, store to obtain simulation model library data by satellite mobile communication Math modular model specialization,
Operation is provided for self-defined simulation model to support, can preferably create the satellite mobile communication scene needed for user.
Brief description of the drawings
The system integration project demonstration and verification system of satellite mobile communication when Fig. 1 is method specific implementation described in present example
The structure chart of system.
Satellite mobile communication emulation platform interactive interface module is shown when Fig. 2 implements for method described in present example
It is intended to.
Fig. 3 is the overall simulation flow of method described in present example.
Satellite mobile communication emulation platform simulation model library is formed when Fig. 4 implements for method described in present example
Figure.
The artificial intelligence schematic diagram of graphic form when Fig. 5 is method specific implementation described in present example.
Fig. 6 realizes the end-to-end simulation contact surface of satellite mobile communication for method described in present example.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
A kind of system integration project demonstration and verification method towards satellite mobile communication of the invention, includes the following steps,
The first step, according to the demand of the system integration project demonstration and verification of satellite mobile communication, completes satellite mobile communication and imitates
The establishment of true mode, supports that the simulation model of extension includes satellite mobile communication node simulation model, satellite communication channel emulates
Model.Wherein satellite communication nodal analysis method include satellite repeater model, antenna model, terminal model, earth station's model and
Dummy satellite；Satellite communication channel simulation model includes large scale fading model and multipath fading model, large scale decline module
Including cloud and mist attenuation model, Rain fade modes, atmospheric attenuation model, tropospheric attenuation model.
Second step, calls the simulation node model created in the first step, creates required artificial network topology；Pass through
The simulated channel model created in the first step is called, determines the channel circumstance of analogue system；And configure simulation parameter, it is necessary to
The simulation parameter of configuration includes：Emulate time started, emulation statistical interval, emulation duration；By the satellite for changing designated module
Mobile communication core algorithm interface, self-defined satellite communication core algorithm.By four above aspects, create complete satellite and move
Dynamic communication simulation scene.
3rd step, emulation carry out being divided into four steps：During simulation run, network is carried out more to the artificial network created
Newly, position, the service condition of all nodes are updated, terminal node and ground critical point tiny node can initiate industry in network renewal process
Business request；With post analysis service request, it is route, call admission, if call admission allows, carries out resource allocation, cuts
Change judgement and processing, create communication link, if call admission is rejected, prompt user, and show related causes；Communication chain
After road creates, communication node parameter, channel parameter needed for link calculation and mapping block extraction, into uplink transmission process
Calculate, obtain the carrier-to-noise ratio of current ink, then the Packet Error Ratio using mapping model by carrier-to-noise ratio mapping as physical layer bag；Reflect
After the completion of penetrating, protocol emulation module adjudicates this physical layer bag using the Packet Error Ratio of physical layer bag and the mode of generation random number
Whether transmission is correct, and obtains the performance statistics of this link transmission to MAC layer, rlc layer, PDCP layers of mapping with this.Emulated
Journey constantly carries out processing business and updates, route, call admission, resource before service ending or emulation terminate according to above-mentioned flow
Distribution, handover management, then carry out link calculation and mapping, finally carry out agreement Propagation Simulation and statistics.It is imitative to emulate pause
Suspend emulation very after this emulation, when emulation terminates, emulate and terminated after this emulation, and remove whole emulation
System.
During simulating scenes configuration and simulation run, user can check the composition of simulating scenes at any time,
And check the link parameter and node parameter at current time.Link parameter includes the link number of each bar link, initiates node, connects
Receive node, middle collection node, type of service, residual time length, the numbering of node parameter including each node, node type, positional information,
Business information, used antenna model.
During simulation run with emulation after, support user checked in the form of curve map or block diagram it is specified
The emulation statistical information of link or the overall situation, while support user to check simulation result by the form of cache file.
Wherein, establishment, satellite mobile communication topological network and the channel ring of simulation model are completed by simulation interactive interface
The establishment in border, defines satellite mobile communication technological core algorithm by way of changing specified interface.It can carry out customized
Satellite communication core algorithm interface includes：Routing algorithm interface, call admission algorithm interface, resource allocation algorithm interface, switching
Algorithm interface, link circuit self-adapting algorithm interface, adaptive coding algorithm interface, speed matching algorithm interface.Simulation result according to
Type difference, which is divided into, is wirelessly transferred statistical result, agreement transmission statistic result.Wherein being wirelessly transferred statistical result includes：Link
The always carrier-to-noise ratio between carrier-to-noise ratio, link overall delay, each node of link, the time delay between each node of link, interference size, multipath
Under decay is big；Agreement transmission statistic result includes：Network layer handling capacity, MAC layer handling capacity, bag arrival moment, reach bag size,
Bag propagation delay time, Packet Error Ratio, cutting off rate.
The present invention includes Math mould by the system-level realization of system integration project demonstration and verification of satellite mobile communication
Block, simulation model library module, copying realize five that module, collection of network management module and simulation interactive interface module are formed
Layer architecture.Specific simulation process includes the establishment of satellite mobile communication simulation model, satellite mobile communication simulating scenes are created, defended
The simulation run of star mobile communication, emulation platform scene display and parameter tracking, emulation statistical result check five parts, its system
Employ five layers and realize framework and object oriented designing, there is excellent scalability and easily operability, it is specific real
Existing scheme is as follows.
Using object oriented designing, satellite mobile communication Math module is built.Satellite mobile communication Math
Module is divided into three categories：Satellite communication node module, including satellite repeater module, Anneta module, terminal module, earth station's mould
Block and satellite mould；Satellite communication channel module, including large scale decline module and multipath fading module, large scale decline module
Decline module, atmospheric attenuation module, tropospheric attenuation module and multipath module including cloud and mist attenuation module, rain；Satellite communication protocols
Module, includes PDCP layers, rlc layer, MAC layer, PHY layer protocol module and corresponding protocol package module.
On the basis of Math module, simulation model library is built.Model library carries out all types of basic modules special
Change storage, and establish corresponding access, additions and deletions, editor, offline storage interface, user is realized to simulation model by above-mentioned interface
The access and management in storehouse.Simulation model library supports the satellite communication nodal analysis method of extension to include satellite repeater model, antenna mould
Type, terminal model, earth station's model and dummy satellite；Simulation model library supports the satellite communication channel simulation model bag of extension
Large scale fading model and multipath fading model are included, large scale decline module includes cloud and mist attenuation model, Rain fade modes, big laboured breathing
Subtract model, tropospheric attenuation model.
Three copying modules, including network topology management module, link meter are built on the basis of simulation model library
Calculation and mapping block and protocol emulation module, modularly realize simulation process.Network topology management module is responsible for realizing to net
The management of network node and channel model, determines satellite modules, the quantity of juncture station module and terminal module, type, position and industry
Business state, and determine used channel model under current simulating scenes；Link calculation and mapping block pass through network topology pipe
The interface that reason module is provided, obtains the required link information of link calculation, completes link calculation and returns to carrier-to-noise ratio, and completes
Link level determines the Packet Error Ratio of this emulation moment physical layer by carrier-to-noise ratio to system-level mapping；Protocol emulation module is born
The function of duty emulation satellite mobile communication agreement, the physical layer Packet Error Ratio that link calculation and mapping are obtained, reflects to agreement upper strata
Penetrate, finally count the agreement transmission performance parameter of each layer protocol and store, while simulation protocol transmits relevant satellite communication
Core technology, including link circuit self-adapting algorithm, adaptive coding algorithm, speed matching algorithm.
Three copyings are realized that module is combined by way of combination by collection of network management module, realize emulation
Overall process, and realize collection, analysis and processing to simulation result, satellite mobile communication routing algorithm, call admission algorithm, money
Source allocation algorithm, handover management algorithm are also realized by way of interface in this module.Collection of network management module is realized
Three nucleus modules and simulation model library module interface are Resealed, emulation is provided for simulation interactive module and controls other
The interface of module.
Simulation interactive module calls the relevant interface of collection of network management, realizes simulation model library displaying and management, control
Simulation process, configuration simulating scenes, tracking simulation parameter, simulation performance displaying, simulating scenes show six functions.
Wherein, platform can preferably use C++ codes to realize, link calculation module is compiled according to International Telecommunication Union's agreement
Write, Math module is write using Qt to be formed.
Under above-mentioned emulation platform framework, the simulation flow of method described in this preferred embodiment is as follows.
(1) simulation model creates：User judges whether to need to create new simulation model, utilizes interaction circle if necessary
The model database management function in face, carries out the extension of simulation model；If it is not required, then directly carry out simulating scenes configuration.
(2) simulating scenes create：User sets simulation parameter, configuration imitative using the simulating scenes configuration feature of interactive interface
True network topology, set channel model and protocol parameter.And according to simulating scenes, change routing algorithm, the call admission of bottom
Algorithm, resource allocation algorithm, the corresponding interface of handover management algorithm, complete the establishment of simulating scenes.
(3) simulation run and control：After simulating scenes are established, user is opened by the control emulation of simulation interactive module
Begin, pause and termination, the operation of analogue system coordinate three copyings by collection of network management module and realize that module is completed.It is imitative
During true operation, network topology management module carries out network renewal to the artificial network created, update all nodes position,
Service condition, terminal node and ground critical point tiny node can initiating business requests in network renewal process；Subsequent network topology pipe
Module analysis service request is managed, is route, call admission, if call admission allows, carries out resource allocation, switching judging
And processing, establishment communication link, if call admission is rejected, user is prompted by Simulation Interface, and show related causes；
After communication link creation, link calculation and mapping block extracted from network topology management module required communication node parameter,
Channel parameter, into the calculating of uplink transmission process, obtains the carrier-to-noise ratio of current ink, then using mapping model by carrier-to-noise ratio
Mapping becomes the Packet Error Ratio of physical layer bag；After the completion of mapping, protocol emulation module using physical layer bag Packet Error Ratio and generation with
The mode of machine number, adjudicate this physical layer bag transmission it is whether correct, and with this to MAC layer, rlc layer, PDCP layer map, obtain this
The performance statistics of secondary link transmission.Simulation process constantly carries out before service ending or emulation terminate according to above-mentioned flow
Processing business and updates, route, call admission, resource allocation, handover management, then carry out link calculation and mapping, finally carry out agreement
Propagation Simulation and statistics, emulation pause are to emulate to suspend emulation after this emulation, and when emulation terminates, analogue system exists
Emulation is terminated after this emulation, and removes whole analogue system.Emulation statistical result is divided into wireless biography according to type difference
Defeated statistical result, agreement transmission statistic are as a result, being wherein wirelessly transferred statistical result includes：When total carrier-to-noise ratio of link, link are total
Prolong, under the carrier-to-noise ratio between each node of link, the time delay between each node of link, interference size, multipath fading are big；Agreement is transmitted
Statistical result includes：Network layer handling capacity, MAC layer handling capacity, bag arrival moment, arrival bag size, by mistake bag propagation delay time, bag
Rate, cutting off rate.
(4) simulating scenes displaying and parameter tracking：During simulating scenes configuration and simulation run, user is when any
The scene display window that can be transferred through simulation interactive interface quarter checks the composition of simulating scenes, and the parameter at logical simulation interactive interface
Tracking window checks the link parameter and node parameter at current time.Link parameter includes the link number of each bar link, initiates
Node, receiving node, middle collection node, type of service, residual time length, node parameter include the numbering, node type, position of each node
Confidence breath, business information, used antenna model.
(5) after during simulation run with emulation, support user by Simulation Interface with curve map or column
The form of figure checks the emulation statistical information of given link or the overall situation, while supports user to be checked by the form of cache file
Simulation result.
When the method for the invention implements, the overall structure of the system integration project demonstration and verification system of satellite mobile communication
Into as shown in Figure 1, preferable whole system is realized using C++.Interactive interface module using Qt as shown in Fig. 2, realized.
The simulation process of the method for the invention as shown in figure 3, user it is first determined whether creating new model, if desired
Then create new simulation model；Model preparation finishes, and user is using interactive interface and modification bottom module two ways, and configuration is certainly
Oneself required simulating scenes, and simulation parameter is set；Then being emulated, the artificial network that is divided into of simulation process updates, including
Route, call admission, the wireless resource management of resource allocation and handover management, link transmission emulation and simulation result count four steps
Form；Whether service ending or emulation terminate subsequent system determination, and process above is repeated if emulating and continuing.Specifically
As shown in fig. 6, in single simulation process, link calculation module obtains link transmission simulation process from network topology management module
Parameter needed for link calculation, is calculated carrier-to-noise ratio, time delay, carries out link level to system-level mapping using carrier-to-noise ratio, obtains
To the Packet Error Ratio of current ink；The calculated Packet Error Ratio of subsequent protocol emulation module, maps to upper strata, acquisition MAC layer,
The performance statistics such as rlc layer, PDCP layers of Packet Error Ratio, handling capacity.
Using object oriented designing, the Math class of satellite mobile communication is built.Math class is divided into three categories：
Satellite communication node class, including satellite repeater class, antenna class, terminal class, earth station's class and satellite class；Satellite communication channel
Class, including large scale decline class and multipath fading class, wherein large scale decline class include cloud and mist decay class, rain declines class, big laboured breathing
Subtract class, tropospheric attenuation class, multipath class etc.；Satellite communication protocols class, comprising PDCP layers, rlc layer, MAC layer, PHY layer protocol class
And corresponding protocol package class.
Simulation model library class is built on the basis of above-mentioned Math class, simulation model library as shown in Figure 4 is deposited by model
Store up module and model bank interface is formed.Simulation model library memory module is write, for the satellite communication simulation model to be extended wound
Storage queue is built, and writes corresponding queue search method, model access method；Followed by above-mentioned interface, each to be wanted
The satellite communication simulation model of extension is write increases model, case-deleted models interface accordingly, and is each satellite to be extended
Communication simulation model writes corresponding offline storage interface.The effect of offline storage interface creates simulation model as user
When, file backup is generated for simulation model in designated position, is when model is deleted, also deletes corresponding file backup.When imitative
During the system reboot of true mode storehouse, model library reads file backup, so that user-defined simulation model can offline not
Lose.The Math class for calling simulation model place to provide, builds three emulation core classes, including net by way of combination
Network Topology Management class, link calculation and mapping class and protocol emulation class.Network topology management class be responsible for realizing to network node and
The management of channel model, determines quantity and the position of simulating scenes Satellite, juncture station and terminal, and determines current simulating scenes
Channel model used in lower；The interface that link calculation and mapping class are provided by network topology management class, obtains link meter
Required information is calculated, link calculation is completed and returns to carrier-to-noise ratio, time delay, and completes link level to system-level mapping, passes through load
The transmission than determining this emulation moment physical layer bag of making an uproar is corrected errors；Protocol emulation class realizes the emulation of agreement transmitting procedure, and in fact
The protocol-dependent satellite mobile communication core technology interfaces such as existing adaptive coding, rate-matched, while be responsible for counting correlation
Agreement transmission performance parameter simultaneously stores.Particular content is as described below：
A) the definition new model that satellite repeater model passes through following parameter：Saturation flux density；Equivalent noise temperature；It is defeated
Enter/export rollback；Saturation output power；Operating mode (transparent forwarding, nontransparent forwarding).
B) antenna model passes through following parameter definition new model：Maximum gain；Directional diagram, directional diagram use unified feed
Add the pattern definition of directional diagram, inputted with document form；Antenna diameter；Antenna figure of merit；Polarizing angle antenna efficiency；Antenna spoke
Penetrate power.
C) terminal model, earth station's model by choose corresponding antenna model, set quality factor realize it is self-defined.
D) dummy satellite is defined by choosing corresponding transponder model and antenna model, sets quality factor realization to make by oneself
Justice.
E) wireless transmission model, including cloud and mist decay, rain decline, atmospheric attenuation, tropospheric attenuation, multipath model etc., multipath
Model supports path number can be set, and pass through the parameters such as time delay of the UI settings per footpath, decay, distribution, the modification of multipath computational methods
Need by changing code.The modification of remaining model, also needs to carry out by way of changing code.
F) agreement mode, including PDCP layer models, rlc layer model, MAC layer model, PHY layer model, service generation
Model and for data packet and protocol package model.
Collection of network management class combines three core classes by way of combination, calls the interface of three classes to realize
Overall process is emulated, and realizes storage, analysis and the processing to simulation result.In collection of network manages class, for routing algorithm, exhale
Access algorithm, resource allocation algorithm, handover management algorithm is made to write corresponding interface, later stage user is by changing these interfaces reality
Existing different core technology algorithm.Meanwhile collection of network management class is realized and three core emulation classes and simulation model library class is connect
Mouth Reseals.
Interactive interface module support Simulation Control, model library displaying and management, scene configuration, parameter tracking, performance show,
Simulating scenes show six functions.
By Simulation Control, beginning, pause, end and the control for exporting simulation report to simulation process are realized.
Model library is shown and management, can classify and show different models and deleted and increased, bottom passes through model
Title deletes corresponding model and offline backup file.The operations of Simulation Interface are got up with the docking of corresponding physical layer interface,
Realize displaying and management of the interactive interface to underlying model storehouse.By the above-mentioned means, can easily implementation model extend, and
Realize offline backup, when system starts herein, the model that user creates will not be lost.
Scene configuration can be realized to the self-defined of simulation parameter, transmission environment and network topology, so as to define oneself
Required simulating scenes.
Parameter tracking can be in real-time exhibition system operation essential information, help user to understand the fortune of first floor system
The change of row state and key parameter.It is link relevant parameter and node relevant parameter according to the division of teaching contents of parameter.Can be real
When show the basic condition of all links and the information of all nodes in current system.
Statistics and the displaying to simulation result are realized in performance displaying, and performance statistics is realized relies on performance statistics body in bottom
It is that the displaying on upper strata is mainly realized by the form of curve, as shown in Figure 5.In the bottom of emulation platform, system is united by performance
Meter system carries out collection, processing and the storage of simulation result, and emulation platform often runs a dummy spacings, and performance statistics system will
The useful artificial intelligence produced is collected layer by layer, is pooled together and is analyzed and stored.On emulation platform upper strata, it is necessary first to
Analyze different simulation results, choose suitable exhibition method, such as simulation result is classified and is shown, there will be the curve of contrast meaning
It is aggregated in as far as possible in the same coordinate system, it is allowed to user sets the modes such as statistical interval, facilitates user to carry out analysis contrast, so that
The integration of the bottom storage result of realization pair and efficiently displaying.
Simulating scenes displaying represents different types of node using figure of different shapes, and node is distinguished using different colours
Service condition, use line between node to represent satellite mobile communication link.
Claims (4)
- A kind of 1. system integration project demonstration and verification method towards satellite mobile communication, it is characterised in that include the following steps,Step 1, according to the demand of the system integration project of satellite mobile communication, the establishment of satellite mobile communication simulation model is completed； The satellite mobile communication simulation model includes supporting the simulation model of extension and does not support the simulation model of extension, supports to expand The simulation model of exhibition includes satellite mobile communication node simulation model and satellite communication channel simulation model；Step 2, according to satellite mobile communication node simulation model, required amount of satellite mobile communication node is created, and change The configuration parameter of satellite mobile communication node；Satellite mobile communication node is changed in emulation net according to the demand of artificial network topology Position in network topology；Satellite mobile communication node by determining configuration parameter and position, which builds to obtain corresponding artificial network, to be opened up Flutter；Step 3, service condition renewal and location updating are carried out to artificial network topology, obtains several new service requests and cut Change request；By obtaining satellite mobile communication link to the wireless resource management of service request and handover request, and using link as Unit stores business information, positional information and the wireless resource information of all nodes of respective links；Step 4, all satellite mobile communication links are carried out with link calculation and link level successively to system-level mapping, is obtained every A link corresponding carrier-to-noise ratio, physical layer time delay and physical layer Packet Error Ratio；In units of link store respective links carrier-to-noise ratio, Physical layer time delay and physical layer Packet Error Ratio；Step 5, agreement is carried out according to the Packet Error Ratio of the corresponding physical layer time delay of each link and physical layer successively to all links Emulation, obtains the corresponding cutting off rate of each link, network layer packet loss, network layer Packet Error Ratio and network layer time delay；Using link as Unit stores network layer packet loss, network layer Packet Error Ratio and the network layer time delay of respective links；Step 6, circulated in the simulation time set using protocol frame as step-length and perform step 3 to 5, completed to being moved towards satellite The system integration project demonstration and verification of communication.
- 2. a kind of system integration project demonstration and verification method towards satellite mobile communication according to claim 1, its feature The step of being, further including the artificial intelligence that will be stored in units of link and save as figure or document form, and show；It is described Artificial intelligence include business information, positional information, wireless resource information, carrier-to-noise ratio, the physical layer of all nodes of respective links Time delay, physical layer Packet Error Ratio, network layer packet loss, network layer Packet Error Ratio and network layer time delay.
- 3. a kind of system integration project demonstration and verification method towards satellite mobile communication according to claim 1, its feature It is, when simulation model is created in step 1, using object oriented designing, structure includes satellite communication node module, and satellite leads to Believe the satellite mobile communication Math module of channel module and satellite communication protocols module；To satellite mobile communication Math Module carries out model specialization and stores to obtain simulation model library data, according to the demand of the system integration project of satellite mobile communication, choosing Corresponding simulation model library data creation is taken to obtain satellite mobile communication simulation model.
- 4. a kind of system integration project demonstration and verification method towards satellite mobile communication according to claim 1, its feature It is, in step 3, wireless resource management includes route querying, call admission judgement, radio resource allocation and handover management.
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| CN107483284A (en) * | 2017-07-20 | 2017-12-15 | 北京航空航天大学 | The method of testing and device of the network equipment |
| CN108540345A (en) * | 2018-04-08 | 2018-09-14 | 西安交通大学 | The satellite mobile communication GMR 1-3G protocol simulation systems and method of service-oriented |
| CN111356192B (en) | 2018-12-21 | 2021-10-29 | 大唐移动通信设备有限公司 | Switching control method and equipment |
| CN111447025B (en) * | 2020-03-18 | 2022-03-11 | 重庆邮电大学 | System-level simulation platform for satellite mobile communication and construction method |
| CN111757354B (en) * | 2020-06-15 | 2021-07-20 | 武汉理工大学 | Multi-user slicing resource allocation method based on competitive game |
| CN112068162A (en) * | 2020-09-11 | 2020-12-11 | 司南信通(北京)科技有限公司 | Automatic testing system and method for AGNSS positioning service performance of terminal |
| CN112800621B (en) * | 2021-02-09 | 2023-02-17 | 广东奥尔特云科技有限公司 | Satellite constellation simulation visualization display and control system based on container cloud |
| CN113408140B (en) * | 2021-06-30 | 2023-12-12 | 中国南方电网有限责任公司 | Power communication network capacity expansion simulation verification method, device, equipment and medium |
| CN114157334B (en) * | 2021-08-27 | 2024-05-03 | 中国空间技术研究院 | Satellite communication access system and transmission analysis method |
| CN114338418B (en) * | 2021-12-13 | 2024-03-15 | 中国运载火箭技术研究院 | Virtual-real combined information network verification platform |
| CN114422010B (en) * | 2021-12-22 | 2024-03-15 | 中国空间技术研究院 | Protocol testing method of satellite communication simulation platform based on network virtualization |
| CN114826460B (en) * | 2022-03-30 | 2022-11-25 | 中国人民解放军战略支援部队航天工程大学 | Satellite communication simulation teaching link calculation simulation system |
| CN114629580B (en) * | 2022-05-17 | 2022-09-13 | 阿里巴巴达摩院(杭州)科技有限公司 | Low-orbit satellite link simulation method and device and electronic equipment |
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