CN102083007B - GSM-R (Global System for Mobile Communications-Railway) cluster scheduling service analysis system and implementing method thereof - Google Patents
GSM-R (Global System for Mobile Communications-Railway) cluster scheduling service analysis system and implementing method thereof Download PDFInfo
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Abstract
The invention relates to a GSM-R (Global System for Mobile Communications-Railway) cluster scheduling service analysis system and an implementing method thereof in the technical field of wireless communication. The analysis of the flow of a railway cluster scheduling service is realized by design of hierarchical modularization. Different service function processing modules are called to carry out qualitative analysis on an GSM-R cluster scheduling service and analyze service interaction conflict by combining interactions between a cluster scheduling communication object and the cluster scheduling service, i.e. dynamic influence factors influencing cluster scheduling communication; and then according to service data which is acquired by monitoring a railway operation field in real time, relative parameters are set and input and qualitative analysis is carried out on GSM-R network service quality characteristics which contain main QoS (Quality of Service) performance indexes of emergency call establishment delay, end-to-end transmission delay, connection failure rate, thuoughput, bit error rate and the like so as to assist railway workers in making a more accurate decision.
Description
Technical field
What the present invention relates to is a kind of system and method for wireless communication technology field, specifically a kind of GSM-R colony dispatching service analytical system and its implementation based on Colored Petri Net.
Background technology
GSM-R (GSM for Railway) is a kind of based on present Most maturation, the most general GSM of common wireless communication system platform, the comprehensive special digital mobile communication system that designs for railway communication specially.For characteristics such as railway communication train scheduling, Train Control, high-speed mobile communications, GSM-R can provide the wireless communication system with customization function and economical and efficient for railway operation.
Angle from trunking communication, GSM-R is a kind of digital group system, train dispatch radio communication can be provided, the function of voice communication such as the communication that makes up of trains, emergency communication, maintenance group communication, can be train Automatic control and measure information data transmission channel is provided, and the train automatic addressing can be provided.It is 0～500km/ hour radio communication requirement that GSM-R can satisfy train running speed, and fail safe is good.Colony dispatching service aims at the dispatching communication design, it is the important service of GSM-R system, between the railroader, comprise train operator, the dispatcher of control centre, shunter, pilot and platform personnel, the voice communications versus data communications means are provided, have had extremely important effect aspect the processing that guarantees traffic safety and urgent burst accident.With respect to the GSM-R basic business, the realization of colony dispatching communication business is the process of a complexity.The colony dispatching service of GSM-R mainly concentrates on and strengthens multipriority and toll breakdown (eMLPP) business, voice group call service (VGCS), 3 business of Voice Broadcast Service (VBS).
The essential characteristic of colony dispatching service comprises: the one-way voice calling link that allows to set up point-to-multipoint (is presented as side speech, in many ways listen to), service-user or dispatched users are initiated or call accepted in predefined geographic area, guarantee the Rapid Establishment of high-priority call in emergency or more urgent situation; Being supported in does not have to set up the high priority voice group call service in the congested situation of Radio Resource.
According to related documents, for the GSM-R network, in conjunction with the completed GSM-R network engineering of the Chinese Railway test situation that interconnects, the more deep comparative analysis that the business such as group calling, broadcast ﹠ call, priority call are carried out confirms that GSM-R related protocol standard exists part blank spot and jejune place really, and these blank spots have certain influence to indivedual flow processs of colony dispatching service.Along with the fast development of colony dispatching communication, some new situations will inevitably appear in the application, therefore need to carry out system constructing and analysis.
The instrument of the Petri net a kind of graphical description process that to be Carl Adam Petri proposed in 1962 is by storehouse institute (Place), transition (Transition), sign (Token) and connect the elements such as arc (Arc) and form.Colored Petri Net (CPN) has been expanded the feature of basic petri net, has added the concept of data and level, has increased the characteristics such as colored mark, arc explanation and level page or leaf.CPN is with graphic form directviewing description system configuration, function and dynamic characteristic, is specially adapted to have communication, synchronously and checking and the analysis of the system of the characteristic procedure such as resource-sharing.And, can be used for assessment of system performance with the CPN model of concept of time.
Through existing literature search being found external existing GSM-R network analysis based on the Petri net is as follows:
1.M.Meyer zu
Adopt Colored Petri Net that train control system is studied Deng " using CPN to the technical problem (Technical Issuesin Modelling the ETCS Using CPN and the Design/CPN tools) of ETCS modeling " that the people delivers, proposed the analytical method of minute integral layer, processing layer and functional layer three parts.In addition, they have proposed a kind of application Petri net define system functional unit in " utilizing the Petri net to train control system modeling (Modeling train control systems with Petri nets-functional referencearchitecture) "; Then be combined into scene by these functional units, consist of processing layer by the scene layer again, all processing layers are connected to become an integrated environment network at last, thereby realize the method to the analysis of train control system.
2.Armin the people such as Zimmermann have proposed the method the GSM-R reliability analyzed based on the Petri net in " a kind of train control system case study of the real-time system design based on model; (ATrain Control System Case Study in Model-Based Real Time System Design) " and " modeling of ETCS real time communication and operation and assessment; (Towards modeling and evaluation of ETCS real-timecommunication and operation) ".The method is according to European Train Control System (ETCS) technical specification, utilize stochastic Petri net to the GSM-R communication failure and recover behavior modeling, start with from position message between vehicle-mounted and radio block center (RBC) and driving license exchange, comprehensive failure parameter has been set up GSM-R transmission model, has analyzed the reliability of GSM-R wireless channel real time communication.
3.Marko the people such as Bago use with the Colored Petri Net of concept of time wired train bus-line communication link have been carried out performance evaluation " utilizing the train communication system emulation (Simulation of a TrainCommunication System Using Timed Colored Petri Nets) of timed CPN ".
At home, correlative study comprises:
People such as Xu Tian Hua etc. in 2007 in " based on ETCS communication system and the train interval analysis of colored Petri network " that " Journal of System Simulation " delivered, proposed based on the communication system of Colored Petri Net and the method for train interval analysis.Comprehensive channel lost efficacy and recovery behavior, probability transmission delay, had proposed train and had followed the trail of the hierarchy that moves wireless communication system, had analyzed the various factors that affects Train Interval in the wireless transmitting system, provided corresponding train safe spacing index.And they utilized in 2008 stochastic Petri net to train control system in the modeling analysis of Frame loss probability of different pieces of information communication subsystem structure.
5. the people such as Cao Yuan utilizes deterministic and stochastic petri net to carry out the reliability consideration of the networking mode that double-layer network covers in " based on the CTCS fail-safe analysis (Reliability Analysisof CTCS Based on Two GSM-R Double Layers Networks Structures) of two kinds of GSM-R double-layer network structures " literary composition.This research is based on set up channel and row control model with site and two kinds of GSM-R Double-level Reticulated of cross-site networking mode, mainly concentrate on the relation between CTCS-3 and the GSM-R, by model analysis draw in the Cellular Networks average train number and idle channel than and the brake hard probability between relation.
6. Beijing Jiaotong University's Master's thesis " based on the research of Colored Petri Net CTCS-3 level row control center modeling and simulation " and " based on CTCS-3 level RBC system's car controlling process modeling and the analysis of stochastic Petri net " all are for the CTCS-3 system functional requirement and the operating mechanism of train controlling center to be utilized the theoretical real-time performance of analyzing system under the GSM-R environment of Petri net.
7. old nation is emerging waits the people to utilize colored Petri network in " railway signal interlocking formalization of logic Modeling Research ", and the railway signal interlocking logic has been carried out formalized description.
As seen present research work mainly concentrates on the aspects such as train control system, data communication subsystem, communication link, network configuration, but there is not yet report for the colony dispatching service analytical system of GSM-R.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of GSM-R colony dispatching service analytical system and its implementation are provided, design by delamination modularization, realization is to the analysis of railway colony dispatching service flow process, by in conjunction with the dynamic effects factor that affects colony dispatching communication such as mutual between colony dispatching communication object, the colony dispatching service, thereby call different business function processing modules, the GSM-R colony dispatching service is carried out qualitative analysis, analyze the service interaction conflict.Then the business datum that gathers according to the on-the-spot Real Time Monitoring of railway operation, input relevant parameter (as: train running speed is set, the parameters such as urgent call probability of happening), GSM-R network service quality (QoS) characteristic is carried out quantitative analysis, comprise the main QoS performance index such as urgent call setup delay, end-to-end propagation delay time, connection failure rate, throughput, the error rate, generate more accurately decision-making with auxiliary railroader.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of GSM-R colony dispatching service analytical system based on Colored Petri Net, comprise: field monitoring subsystem, business diagnosis subsystem, database server, wherein: the field monitoring subsystem links to each other by the GSM-R network wireless with the business diagnosis subsystem and transmits collection in worksite data, business diagnosis subsystem and the wired transmission network performance data information by analysis that links to each other of database server.
Described field monitoring subsystem comprises: data acquisition module, data preprocessing module, wireless communication module, wherein: data acquisition module links to each other with data preprocessing module and transmits the field data that gathers, the data preprocessing module field data after the transmission process that links to each other with wireless communication module, wireless communication module and the business diagnosis subsystem field data after by the wireless transmission process that links to each other.
Described business diagnosis subsystem comprises: data analysis module, data query module.Data analysis module links to each other with database server and transmits network performance data information to be stored, the data query module links to each other with database server and transmit the data of extracting from database server, and data analysis module links to each other with the data query module and transmits the data of extracting from database server.
The present invention relates to the implementation method of said system, may further comprise the steps:
B1, the existing railway colony dispatching service essential characteristic of analysis are set up corresponding service attribute mechanism;
Described service attribute refers to group calling, broadcast ﹠ call, urgent call, multipriority and the transfer of data of voice class and data class.
B2, based on Colored Petri Net, adopt the thought of layering, set up the colony dispatching service analytical system of stratification, defined and be independent of professional functional module in the colony dispatching service, concrete steps comprise:
B21, make up the operation layer network that top layer is simplified, in order to describe in logic mutual of colony dispatching service among the step B1;
B22, make up the business function layer of this system, for GSM-R communication feature process, be independent of professional functional module in the definition colony dispatching service;
Described business function layer comprises tolls breakdown module, group calling module and broadcast module.
B23, structure Network Element Layer place one or more network elements with functional entity among the GSM-R, realize concrete operation flow with the annexation between the network element;
B24, each layer is related by the alternative transition of Petri connects into a block mold, thereby improves GSM-R colony dispatching service analyzing subsystem.
B3, by the processing module of calling different business functions certain specific transactions is carried out qualitative analysis and quantitative analysis.
Described qualitative analysis and quantitative analysis comprise:
C1, in conjunction with the dynamic effects factor that affects colony dispatching communication such as disturbing between colony dispatching communication object, the colony dispatching service, detect it and the service interaction conflict whether occurs, analyze and revise according to testing result, to realize the qualitative analysis to the GSM-R colony dispatching service;
C2, pass through train running speed, the relevant parameters such as urgent call probability of happening carry out quantitative analysis to quality of service characteristics, obtain the main QoS index such as urgent call setup delay, end-to-end propagation delay time, connection failure rate, throughput, the error rate with this, thereby carry out the service level fail-safe analysis.
Beneficial effect of the present invention is: compare with existing system, utilize the method for Colored Petri Net, in conjunction with GSM-R colony dispatching service characteristics, made up the GSM-R colony dispatching service and made up analytical system.Simultaneously, can realize the real time data that monitoring in the actual operation process of railway collects is analyzed, can provide foundation for railroader's high-speed decision.In addition, can also provide data basis and reference frame for other traffic aided solution of problems, have important engineering using value.
Description of drawings
Fig. 1 is the system configuration schematic diagram of embodiment;
Fig. 2 is the business diagnosis subsystem technology scheme flow chart of embodiment;
Fig. 3 is three layers of colony dispatching service analytical system structural representation of embodiment;
Fig. 4 is that the functional module of tolling breakdown of embodiment is described;
Fig. 5 is that the middle group calling module of embodiment is described;
Fig. 6 is the Network Element Layer schematic diagram that the group calling request that is associated with of embodiment is processed.
Embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: field monitoring subsystem 1, business diagnosis subsystem 2, database server 3, wherein, field monitoring subsystem 1 and the business diagnosis subsystem 2 wireless transmission field data information that link to each other, the network performance data information that business diagnosis subsystem 2 is to be stored with database server 3 wired transmission that link to each other.
Described field monitoring subsystem 1 comprises: data acquisition module 4, data preprocessing module 5, wireless communication module 6, wherein data acquisition module 4 is used for the on-the-spot real time business data of railway operation are gathered, 5 pairs of business datums that gather of data preprocessing module are carried out preliminary treatment, and the field data information exchange after the processing is crossed wireless communication module 6 and is transferred to the business diagnosis subsystem.Data acquisition module 4 links to each other with data preprocessing module 5 and transmits the field data that gathers, data preprocessing module 5 field data after the transmission process that links to each other with wireless communication module 6, wireless communication module 6 and business diagnosis subsystem 2 field data after by the wireless transmission process that links to each other.
Described business diagnosis subsystem 2 comprises: data analysis module 7, data query module 8, and for the analytic function of finishing colony dispatching service.Data analysis module 7 is used for colony dispatching service is analyzed, and data analysis module 7 links to each other with database server 3 and transmits network performance data information to be stored; Data query module 8 is used for extracting data from database server, and data query module 8 links to each other with database server 3 and transmit the data of extracting from database server.Data analysis module 7 links to each other with data query module 8 and transmits the data of extracting from database server.
Described database server 3 is used for the QoS performance data after the storage process business diagnosis subsystem processes.
As shown in Figure 2, the colony dispatching service analysis of present embodiment is based on the following steps realization:
As shown in Figure 3, three layers colony dispatching service stratification analytical system comprises operation layer, business function layer, Network Element Layer in the present embodiment.Wherein, the logic that operation layer has been described between the different business is mutual, by different business at the same time the mutual interference in the implementation procedure can reflect that colony dispatching service is on the impact of the stability of a system and fail safe.The business function layer has defined the functional module of colony dispatching service, comprising: toll breakdown module, group calling module, broadcast module, realize specific colony dispatching function by loading different functional module combinations.Network Element Layer has comprised the as shown in the figure functional entitys such as mobile switching centre (MSC), attaching position register (HLR), Gateway Mobile Switching Center (GMSC), Group Call Register (GCR), and the annexation of Network Element Layer can realize concrete business function.For example, the multipriority of enhancing and forced release service called BSC, MSC, HLR, VLR, etc.; Voice group call service has called GMSC, GCR, MSC, HLR, VLR etc.; Voice Broadcast Service has called MSC, GCR, HLR, VLR etc.
As shown in Figure 4, toll breakdown module and can realize cutting off the calling of low priority and preferentially set up the function of the calling of high priority based on what Colored Petri Net was set up.The below is specifically described it: the used circular expression of Tu Zhongku has characterized system mode; Transition represent with square, have characterized the system action that can cause that state changes.When system mode changes, the storehouse in sign will transfer to next storehouse institute by transition.The state of Fig. 3 comprises: new call out, in the call request, channel status, call connection, successful connection, conversation carry out in, congested, resource is seized, the interruption of former call communication, queuing etc.; Can cause that the behavior that system mode changes comprises: make a call, Internet resources judgement, channel allocation, channel occupancy, priority judge, toll breakdown ongoing conversation, channel release etc.
New call request is being arranged or having under the state of call queuing, (supposing that here the user who makes a call has been authorized to toll breakdown function.) all can trigger the transition that make a call, system mode is in the call request.At first the channel resource of network system is judged, judged whether that available free channel can be used for this calling.If available free channel can be used in the system, channel is assigned to this calling so, call setup successful connection, channel occupancy.Carry out in the process in conversation, this conversation may be had the call interruption of higher priority, otherwise the conversation normal termination discharges channel; If without idle channel, system is in congestion state, then this call priority is judged.By the condition of tolling breakdown, service circuit adopts the preemptive type Service Principle, and the condition of tolling breakdown here is that high-priority call is tolled breakdown low priority call.If new call priority is higher than ongoing calling, resource then can occur to be seized, low priority call is tolled breakdown, and the channel of release is used for setting up this new call connection; If new call priority is lower than ongoing calling, so new calling will according to priority be lined up.
As shown in Figure 5, the group calling module of present embodiment mainly is the group calling of initiating for the dispatcher.After the dispatcher initiates the voice group call service request, will ask to process; In case do not allow to set up group calling, request will be terminated; If allow to set up group calling, then next carry out the judgement of Internet resources, here namely with the eMLPP service interaction.But the Internet resources time spent then is this audio call allocated channel, connects, and the unavailable channel forced releasing that then carries out of Internet resources, the channel of being tolled breakdown transfer to be voice call service.
Because VBS is professional closely similar with the VGCS business, in service definition, signaling process, to the demand of system and terminal, it is all similar to call out the aspect such as control.So not providing the VBS business module among the present invention describes.
As shown in Figure 6, the Network Element Layer association VGCS request processing procedure, relate to GMSC, group calling controlling MSC, GCR functional entity, realized the idiographic flow that the group calling request is processed.
After dispatcher's request of making a call, Gateway Mobile Switching Center is analyzed this calling, then route the call to the group calling controlling MSC, group calling controlling MSC inquiry GCR, obtain the group calling attribute, GCR checks the caller dispatcher, checks that whether it set up in dispatcher's tabulation of voice group call service allowing.If in tabulation, then the caller dispatcher will join in the meeting bridge of this group calling; If do not exist, then this calling is released.
Claims (7)
1. implementation method based on the GSM-R colony dispatching service analytical system of Colored Petri Net, it is characterized in that, this system comprises: field monitoring subsystem, business diagnosis subsystem, database server, wherein: the field monitoring subsystem links to each other by the GSM-R network wireless with the business diagnosis subsystem and transmits collection in worksite data, business diagnosis subsystem and the wired transmission network performance data information by analysis that links to each other of database server;
May further comprise the steps:
B1, the existing railway colony dispatching service essential characteristic of analysis are set up corresponding service attribute mechanism;
B2, based on Colored Petri Net, adopt the thought of layering, set up the colony dispatching service analytical system of stratification, defined and be independent of professional functional module in the colony dispatching service;
B3, by the processing module of calling different business functions certain specific transactions is carried out qualitative analysis and quantitative analysis.
2. method according to claim 1, it is characterized in that, described field monitoring subsystem comprises: data acquisition module, data preprocessing module, wireless communication module, wherein: data acquisition module links to each other with data preprocessing module and transmits the field data that gathers, the data preprocessing module field data after the transmission process that links to each other with wireless communication module, wireless communication module and the business diagnosis subsystem field data after by the wireless transmission process that links to each other.
3. method according to claim 1, it is characterized in that, described business diagnosis subsystem comprises: data analysis module, data query module, data analysis module links to each other with database server and transmits network performance data information to be stored, the data query module links to each other with database server and transmit the data of extracting from database server, and data analysis module links to each other with the data query module and transmits the data of extracting from database server.
4. method according to claim 1 is characterized in that, described service attribute refers to group calling, broadcast ﹠ call, urgent call, multipriority and the transfer of data of voice class and data class.
5. method according to claim 1 is characterized in that, described step B2 comprises:
B21, make up the operation layer network that top layer is simplified, in order to describe in logic mutual of colony dispatching service among the step B1;
B22, make up the business function layer of this system, for GSM-R communication feature process, be independent of professional functional module in the definition colony dispatching service;
B23, structure Network Element Layer place one or more network elements with functional entity among the GSM-R, realize concrete operation flow with the annexation between the network element;
B24, each layer is related by the alternative transition of Petri connects into a block mold, thereby improves GSM-R colony dispatching service analyzing subsystem.
6. method according to claim 5 is characterized in that, the business function layer described in the step B22 comprises tolls breakdown module, group calling module and broadcast module.
7. method according to claim 5 is characterized in that, the qualitative analysis described in the step B3 and quantitative analysis comprise:
C1, in conjunction with the dynamic effects factor of colony dispatching communication, detect it and the service interaction conflict whether occurs, analyze and revise according to testing result, to realize the qualitative analysis to the GSM-R colony dispatching service;
The dynamic effects factor of described colony dispatching communication comprises: interference effect between colony dispatching communication object and the colony dispatching service;
C2, by relevant parameter quality of service characteristics is carried out quantitative analysis, obtain main QoS index with this, thereby carry out the service level fail-safe analysis;
Described relevant parameter comprises: train running speed and urgent call probability of happening;
Described main QoS index comprises: urgent call setup delay, end-to-end propagation delay time, connection failure rate, throughput and the error rate.
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| CN102300166B (en) * | 2011-09-13 | 2019-01-11 | 中兴通讯股份有限公司 | Group-calling set-up method and device |
| CN102566429B (en) * | 2012-01-09 | 2013-12-11 | 上海交通大学 | Petri network based high speed railway train working permission transmission and analysis system, and application thereof |
| CN103200532B (en) * | 2013-04-12 | 2016-05-18 | 哈尔滨海能达科技有限公司 | A kind of device, system and method for realizing different systems clustered system interconnection |
| CN105282230B (en) * | 2015-09-11 | 2018-05-04 | 中国人民解放军63796部队 | A kind of hard real time computer cluster dynamic scheduling system |
| CN105873123B (en) * | 2016-03-21 | 2019-03-15 | 卡斯柯信号有限公司 | A kind of detection method of inter-city passenger rail GSM-R wireless information delay |
| CN105847082B (en) * | 2016-03-21 | 2019-04-16 | 卡斯柯信号有限公司 | A kind of method that inter-city passenger rail GSM-R wireless information can be protected to postpone |
| CN105873144A (en) * | 2016-05-31 | 2016-08-17 | 天津七二通信广播有限公司 | Dual-mode locomotive station supporting GSM-R and MPT1327 functions and seamless switching method |
| CN111514342A (en) * | 2020-05-20 | 2020-08-11 | 天津零石科技有限公司 | Remote control carriage degassing unit based on GSM-R network |
| CN114310870A (en) * | 2021-11-10 | 2022-04-12 | 达闼科技（北京）有限公司 | Intelligent agent control method and device, electronic equipment and storage medium |
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