CN102231886A - GSM-R (global system for mobile communications for railway) network interface monitoring system - Google Patents
GSM-R (global system for mobile communications for railway) network interface monitoring system Download PDFInfo
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Abstract
The invention provides a GSM-R (global system for mobile communications for railway) network interface monitoring system. The system is characterized by comprising an Abis interface monitoring subsystem, an interface-A monitoring subsystem, a PRI (primary rate interface) monitoring subsystem, a comprehensive analysis subsystem and a database, wherein the Abis interface monitoring subsystem is used for collecting, analyzing and processing the network signaling of an Abis interface, the interface-A monitoring subsystem is used for collecting, analyzing and processing the network signaling of an interface A, the PRI monitoring subsystem is used for collecting, analyzing and processing the user data and network signaling of a PRI interface, the comprehensive analysis subsystem is used for performing correlation analysis on the data analyzed and processed by the Abis interface monitoring subsystem, the interface-A monitoring subsystem and the PRI interface monitoring subsystem so as to carry out statistic analysis and fault discrimination on the quality of train control service carried by a GSM-R, and the database is used for storing the processed user data and network signaling. The GSM-R network interface monitoring system can be used for realizing effective and reliable multifunctional application maintenance, such as user tracking, fault location, network performance analysis and the like.
Description
Technical field
The present invention relates to communication system, relate in particular to a kind of GSM-R network interface monitoring system that railway specialized mobile radio network application is safeguarded that is applied to.
Background technology
GSM-R is the new technology that was applied to China railways in recent years, be exclusively used in the daily operation management of railway, train dispatch radio communication is provided, function of voice communication such as the communication that makes up of trains, section maintenance operation communication, emergency communication, tunnel communication, for the automatic control of train provides data transmission channel with detection information, also can provide train automatic addressing and passenger service.From simple being used for train traffic control and ensureing transportation safety, progressively rising to communication is that platform is set up the integration column vehicle control in railway communication.The application of GSM-R in 3 grades of Chinese train operation control systems (hereinafter to be referred as CTCS-3 or C3 level train control system) had higher requirement to the service quality of GSM-R network, and the service quality of GSM-R network directly has influence on key indexs such as the reliability, availability of CTCS-3 level train control system.
The utilization of GSM-R at present safeguards and mainly depends on instruments such as wireless access network Element management system, signalling analysis instrument, driver test system that these instruments stem from public's global system for mobile communications (GSM) network.The networking plan of GSM-R and application scenarios and GSM have a great difference, and existing utilization maintenance service can't satisfy the utilization maintenance needs of GSM-R fully.
Summary of the invention
At above-mentioned deficiency, the invention provides a kind of GSM-R network interface monitoring system,, reliably multi-functional utilization such as usertracking, fault location and network performance analysis effective in order to realize safeguarded.
GSM-R network interface monitoring system provided by the invention comprises: the Abis interface monitoring subsystem is used to gather the network signal with the analyzing and processing Abis interface;
A interface monitoring subsystem is used to gather the network signal with analyzing and processing A interface;
PRI interface monitoring subsystem is used to gather user data and network signal with analyzing and processing PRI interface;
The subsystem of comprehensive analysis, be used for user data and network signal after described Abis interface monitoring subsystem, described A interface monitoring subsystem and the described PRI interface monitoring subsystem analyzing and processing are carried out association analysis, so that the row control quality of service that GSM-R was carried is carried out statistical analysis and fault distinguishing;
Database is used for user data and network signal after the stores processor.
According to GSM-R network interface monitoring system of the present invention, by comprehensive monitoring Abis interface, A interface and PRI interface, collection network signaling and user data, analyze separately and analysis-by-synthesis by data these three interfaces, realized signal collecting, user's real-time tracking, network state monitoring, network performance statistics, network exception event analysis and functions such as location, the inquiry of historical data and group financial statements generation, can promote GSM-R network application maintenance levels comprehensively at aspects such as service quality, range of application, reliabilities.
Description of drawings
Fig. 1 is the logical construction schematic diagram of GSM-R network interface monitoring system of the present invention.
Fig. 2 is the conversation sequential chart of the CTCS-3 level travelling carriage of GSM-R network interface monitoring system drafting.
Fig. 3 is the descending speech quality distribution map of GSM-R network.
Fig. 4 is the physical structure schematic diagram of GSM-R network interface monitoring system of the present invention.
Fig. 5 is the structural representation of Abis interface monitoring subsystem in the GSM-R network interface monitoring system of the present invention.
Fig. 6 is the structural representation of A interface monitoring subsystem in the GSM-R network interface monitoring system of the present invention.
Fig. 7 is the structural representation of PRI interface monitoring subsystem in the GSM-R network interface monitoring system of the present invention.
Fig. 8 carries out the flow chart of analyzing and processing to network signal and row control data for PRI interface monitoring subsystem.
Fig. 9 is the usertracking of Abis interface and the A interface logical schematic that continues.
Figure 10 is that the PRI of circle place of office interface subsystem data transmit schematic diagram.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, technical scheme of the present invention is clearly and completely described below in conjunction with accompanying drawing.
Fig. 1 is the logical construction schematic diagram of GSM-R network interface monitoring system of the present invention.As shown in Figure 1, this GSM-R network interface monitoring system comprises: Abis interface monitoring subsystem 10, A interface monitoring subsystem 20, PRI interface monitoring subsystem 30, The subsystem of comprehensive analysis 40 and database 50.
Wherein, Abis interface monitoring subsystem 10 is used to gather the network signal with the analyzing and processing Abis interface;
A interface monitoring subsystem 20 is used to gather the network signal with analyzing and processing A interface;
PRI interface monitoring subsystem 30 is used to gather user data and the network signal with analyzing and processing PRI interface; Particularly, the PRI interface is the interface between the GSM-R mobile switch (MSC) and the RBC communication server, the row control data of transmitting between PRI interface monitoring subsystem 30 real-time acquisition interface network signals and the car ground realize functions such as usertracking, row control data monitoring.
The subsystem of comprehensive analysis 40 is used for the data after described Abis interface monitoring subsystem, described A interface monitoring subsystem and the described PRI interface monitoring subsystem analyzing and processing are carried out association analysis, so that row control quality of service is carried out statistical analysis and fault distinguishing;
Particularly, Abis interface monitoring subsystem, A interface monitoring subsystem, PRI interface monitoring subsystem are not isolated fully, signaling and the user data of monitored travelling carriage in communication process experienced this three interfaces, need mutual exchange message between them, constitute an organic whole jointly.The subsystem of comprehensive analysis is carried out association by the data after A, Abis, three monitoring subsystems of PRI are handled, and realizes row control quality of service is carried out statistical analysis and fault distinguishing.These The subsystem of comprehensive analysis 40 performed statistical analysis and fault distinguishing functions are described in detail as follows.
One, CTCS-3 wireless overtime/outage differentiates
Fig. 2 is the conversation sequential chart of the CTCS-3 travelling carriage of GSM-R network interface monitoring system drafting.As shown in Figure 2, can demonstrate the contents such as call scenarios of train locomotive number, running number, CTCS-3 travelling carriage in this conversation sequential chart, and be red with the abnormal mobile station identification of communication process, so the network management personnel just can locate fast CTCS-3 wireless overtime/outage.
For CTCS-3 wireless overtime/outage, GSM-R network interface monitoring system can generate the fault statistics form automatically and derive with the Excel form.
Two, service alarm
Network signal and user data for monitored Abis, A, PRI interface are monitored in real time, and the audible and visual alarm prompting is provided when abnormal conditions occurring, and abnormal conditions are defined as follows:
Particularly, the Abis interface service exception can be defined as follows: monitored travelling carriage table tennis occurs and switches; Monitored travelling carriage handoff failure; Monitored travelling carriage switch sequence and design sequence are not inconsistent; Monitored travelling carriage has in continuous 6 measurement reports more than 3 up (descending) speech qualities more than or equal to 5 grades; Monitored travelling carriage has in continuous 6 measurement reports more than 3 up (descending) incoming levels smaller or equal to-92dB; The monitored travelling carriage flow process unusual (not finding disconnect message) of taking out stitches; Monitored travelling carriage disconnection cause is not Normal Call Clearing.
Particularly, the A interface business can be defined as follows unusually: monitored travelling carriage table tennis occurs and switches; Monitored travelling carriage switching type does not switch for power budget; Monitored travelling carriage switch sequence and design sequence are not inconsistent; The monitored travelling carriage flow process unusual (not finding disconnect message) of taking out stitches; Monitored travelling carriage disconnection cause is not Normal Call Clearing.
Particularly, PRI interface business status monitoring one of following several situations occur and may be defined as unusually: link failure: the disconnection cause value is not 16 (Normal Call Clearing) in D channel disconnect or the release message; Transfer of data is overtime: any two application layer datas of the same direction that transmits on the same link are interval greater than T-NVCONTACT; It is unusual to tear chain open: the row car controlling is carried link between equipment or the RBC and is torn chain (receiving disconnect or release message) open all do not receive " communication session end " packet (Bale No.: 156) before on both direction.
Three, network performance analysis
Data by analysis-by-synthesis Abis interface, A interface, PRI interface, can cover indexs such as situation, handover and add up monitored travelling carriage up-downgoing incoming level distribution, transmission quality distribution, wireless field density, utilize these statisticses, the network management personnel can carry out entry evaluation to the GSM-R running status.Fig. 3 is the descending speech quality distribution map of GSM-R network, and Fig. 3 has demonstrated the descending speech quality distribution situation of GSM-R network.
Fig. 4 is the physical structure schematic diagram of GSM-R network interface monitoring system of the present invention.As shown in Figure 4, the interface collecting device is responsible for gathering signaling and data from the collection point, and signaling that collects and data message insert the acquisition process central server.For the near-end collection point, collecting device can directly be connected on the DDF distributing frame, need be connected to by transmission network for the remote capture point and gather on the setting.Collecting device is connected on the monitored link by the high resistant xegregating unit.Owing to adopt the high-ohmic cross-connection technology, make monitoring system and isolated fully by the collection link, do not influence the operate as normal of being gathered link.What the high resistant isolator was exported is the overlap joint weak signal, is the accuracy that guarantees to gather signaling message and data, adopts the signal reduction apparatus to carry out digital equalising and gains, and is reduced into fiduciary level E1 signal, is connected to time slot convergence equipment or signal collecting card.
If it is many that quilt is gathered link, can adopt the time slot convergence equipment, the signalling time slot of link is gathered in convergence, adopts this mode can reduce the quantity of required signal collecting card, and the saving system invests.
The kernel software of GSM-R network interface monitoring system operates among processing server, analysis-by-synthesis server, the gateway server, system history data is stored among the database server, each server is installed Linux/Unix operating system, database adopts Oracle, and the hardware of server configuration was decided on the time that needs data quantity stored and history data store.
Owing to equipment among the system is many, need provide unified clock for each equipment, so that the time that incident in the GSM-R network is taken place provides reasonable judgment.Therefore, all devices is all synchronous with the clock source of standard in the system.
GSM-R network interface monitoring system according to the foregoing description, by comprehensive monitoring Abis interface, A interface and PRI interface, collection network signaling and user data, analyze separately and analysis-by-synthesis by data these three interfaces, realized signal collecting, user's real-time tracking, network state monitoring, network performance statistics, network exception event analysis and functions such as location, the inquiry of historical data and group financial statements generation, can promote GSM-R network application maintenance levels comprehensively at aspects such as service quality, range of application, reliabilities.
Further, Fig. 5 is the structural representation of Abis interface monitoring subsystem in the GSM-R network interface monitoring system of the present invention.As shown in Figure 5, in the GSM-R network interface monitoring system that is applied to CTCS-3 level train control system of the foregoing description, the Abis interface monitoring subsystem comprises that Abis signal collecting module 11, Abis signalling analysis processing module 12 and Abis show enquiry module 13.
Wherein, Abis signal collecting module 11 is used for from Abis interface collection network signaling.Particularly, Abis signal collecting module 11 is responsible for from monitored Abis link collection network signaling, and the MSU (Message Signal Unit, Message Signal Unit) that collects is sent to Abis signalling analysis processing module 12 with the form of byte stream.
Abis signalling analysis processing module 12 is used for the network signal of described Abis signal collecting module collection is carried out analyzing and processing.Particularly, this Abis signalling analysis processing module 12 for example comprises following a plurality of submodule:
MSU assembles submodule, and Abis signal collecting module 11 sends to Abis signalling analysis processing module 12 with the form of byte stream with the MSU that collects, and MSU assembling submodule is with the byte stream assembling framing of receiving;
The LAPD submodule of decoding is used to resolve the second layer (being the LAPD layer) of Abis signaling;
Abis signaling cache sub-module is used for the signaling through second layer decoding is temporarily stored in the Abis signaling buffering area, uses for the 3rd layer of signaling decoding submodule of Abis.
The 3rd layer of signaling decoding submodule of Abis is used for Abis the 3rd layer protocol stack that provides according to the GSM-R network equipment vendor, to the 3rd layer of signaling decoding of Abis.
The 3rd layer of signaling decoding submodule of Um Interface is used for reference to the Um Interface signaling decoding of GSM 04.08 standard to the 3rd layer of signaling bear of Abis.
CDR synthon module, the each conversation that is used to follow the trail of monitored travelling carriage, and synthetic call detail record.
Message sends submodule, is used for showing enquiry module 13 be sent to Abis from data such as call detail record, network signals.
Switch and analyze submodule, be used to write down the handover information of monitored travelling carriage, statistics handoff delay, parameters such as handover success rate.
Measurement report is analyzed submodule, is used to analyze the parameters such as up-downgoing measurement report, speech quality, Timing Advance of each monitored travelling carriage.
The message sink submodule is used to receive the message that the PRI interface sends, as information such as running number, kilometer posts.
The data persistence submodule is used for signaling and analysis result persistent storage among database.
Abis shows enquiry module 13, is used to show, inquire about and exports the analysis processing result of obtaining from described Abis signalling analysis processing module 12.Particularly, Abis shows that enquiry module 13 can comprise following a plurality of submodule:
The message sink submodule is used to receive signaling and the statistics that the signalling analysis processing center sends;
The signaling display sub-module is used to show monitored travelling carriage conversation signaling process;
The 3rd layer of signaling decoding submodule of Abis is used to show the detailed decoding of every signaling;
The 3rd layer of signaling decoding submodule of Um Interface is used for the 3rd layer of signaling for the Abis that comprises the Um Interface signaling, demonstrates its detailed decoding;
The measurement report rendering submodule is used for real-time rendering and goes out monitored travelling carriage current service cell up-downgoing incoming level curve, the descending incoming level curve of maximum six abutting subdistricts, speech quality curve, timing advance discharge curve;
The statistical result showed submodule is used for the result such as form show Calls record, handover record, call setup time-delay, handover success rate, handover time-delay with chart;
Form is derived submodule, and being used for derives signaling, statistical report form with the form of Excel;
The inquiry of historical data submodule etc.
Further, Fig. 6 is the structural representation of A interface monitoring subsystem in the GSM-R network interface monitoring system of the present invention.As shown in Figure 6, in the GSM-R of the foregoing description network interface monitoring system, A interface monitoring subsystem comprises that A interface signaling acquisition module 21, A interface signaling analysis and processing module 22 and A interface show enquiry module 23.
Wherein, A interface signaling acquisition module 21 is used for from A interface collection network signaling.Particularly, each collection point is sent to A interface signaling analysis and processing module 22 with the data that collect, and detects the break-make situation of link simultaneously;
A interface signaling analysis and processing module 22 is used for the network signal of described A interface signaling acquisition module collection is carried out analyzing and processing.Particularly, A interface signaling analysis and processing module 22 for example comprises that initial data decoding submodule, MSU decoding submodule, metadata cache submodule, three layers of message parse submodule, BSSMAP decoding submodule, DTAP decoding submodule, CDR synthon module, statistical analysis submodule and message send submodule, and these a plurality of submodules are finished decoding, synthetic detailed call record (CDR), switched functions such as statistics and statistical analysis.
The A interface shows enquiry module 23, is used to show, inquire about and exports the analysis processing result of obtaining from described A interface signaling analysis and processing module.Particularly, this A interface shows that enquiry module 23 for example comprises the message sink submodule, display sub-module, source codec submodule, statistics submodule, historical record inquiry submodule and form are derived submodule etc. in real time, these a plurality of submodules can provide following function to a certain monitored travelling carriage signaling process, handover, have real-time demonstration and the inquiry of historical data function for the user, also possess the Link State warning function simultaneously.
Further, Fig. 7 is the structural representation of PRI interface monitoring subsystem in the GSM-R network interface monitoring system of the present invention.As shown in Figure 7, in the GSM-R of the foregoing description network interface monitoring system, PRI interface monitoring subsystem comprises PRI acquisition module 31 and PRI analysis and processing module 32.
Wherein, PRI acquisition module 31 is used for from the row control data of transmitting between PRI interface collection network signaling and the car ground, realizes functions such as usertracking, row control data monitoring;
PRI analysis and processing module 32 is used for network signal and described row control data that PRI acquisition module 31 is gathered are carried out analyzing and processing.Particularly, Fig. 8 is controlled the flow chart that data are carried out analyzing and processing for PRI interface monitoring subsystem to network signal and row, and as shown in Figure 8, PRI interface monitoring subsystem carries out analyzing and processing to network signal with row control data and may further comprise the steps:
Step S1 gathers original bit stream from monitored PRI link;
Step S2 separates the network signal in the original bit stream with user data;
Step S3 carries out the HDLC decoding to signaling bit stream, analyzes and find out the Setup signaling;
Step S4 analyzes signaling, obtains this time calling out corresponding B channel number, transmission rate;
V.110, step S5 decodes to the user data that will gather, and is assembled into MSU;
Step S6 is assembled into MSU with network signal;
Step S7 sends to the PRI processing server with MSU.
Further, the PRI processing server receives MSU, according to ITU-T Q.931 standard network signal is resolved, according to CTCS-3 level train control system ATP and RBC interface specification user data is resolved.With MSIDSN is each conversation that sign is followed the trail of monitored travelling carriage, the data of transmitting between CTCS ground installation and the mobile unit in the analysis communication process.Signaling and data after the analysis are saved among the database server.
Further, in the GSM-R of the foregoing description network interface monitoring system, also comprise:
Gateway subsystem 60 (as shown in Figure 1) is used to realize two communications between the described GSM-R network interface monitoring system.
Particularly, can continuous monitored tracking for monitored travelling carriage in the new sub-district of taking over of adjacent office, need two GSM-R network interface monitoring systems between adjacent Railway Bureau to intercom mutually, finish the transfer of monitored travelling carriage.Mutual need between the different GSM-R network interface monitoring systems are finished by gateway subsystem 60.
Fig. 9 is the usertracking of Abis interface and the A interface logical schematic that continues.As shown in Figure 9, A
NThe sub-district belongs to the GSM-R of A office network interface monitoring system monitored area, B
NThe sub-district belongs to the GSM-R of B office network interface monitoring system monitored area.When travelling carriage by A
NThe sub-district switches to B
NDuring the sub-district, the GSM-R of A office network interface monitoring system stops the monitoring to travelling carriage, and the GSM-R of B office network interface monitoring system is taken over the monitoring to this travelling carriage; The hand-over of monitored travelling carriage refers to that two station interface monitoring systems transfer network signal in Abis and the A interface monitoring subsystem by gateway subsystem.
Figure 10 is that the PRI of circle place of office interface subsystem data transmit schematic diagram.As shown in figure 10, R
ABe the nearest transponder of cell coverage area that there are handoff relation in A intra-office distance and B office, R
ABBe that RBC switches the transponder of carrying out point.R
AWith R
ABBetween the data of PRI interface should send simultaneously by gateway subsystem to A station interface monitoring system and B station interface monitoring system.
Further, in the GSM-R of the foregoing description network interface monitoring system, also comprise:
Particularly, equipment is many in the GSM-R network interface monitoring system, and nms subsystem provides the monitoring management function to each soft hardware equipment of internal system, the configuration management, performance management, alarm of system etc. is provided, and can manages Unit account of plant.The order of severity according to fault is divided into critical alarm, high severity alarm and three ranks of warning alarm, and the network management personnel can take different treatment measures according to alarm cause and alarm level.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a GSM-R network interface monitoring system is characterized in that, comprising:
The Abis interface monitoring subsystem is used to gather the network signal with the analyzing and processing Abis interface;
A interface monitoring subsystem is used to gather the network signal with analyzing and processing A interface;
PRI interface monitoring subsystem is used to gather user data and network signal with analyzing and processing PRI interface;
The subsystem of comprehensive analysis, be used for user data and network signal after described Abis interface monitoring subsystem, described A interface monitoring subsystem and the described PRI interface monitoring subsystem analyzing and processing are carried out association analysis, so that the row control quality of service that GSM-R was carried is carried out statistical analysis and fault distinguishing;
Database is used for user data and network signal after the stores processor.
2. GSM-R network interface monitoring system according to claim 1 is characterized in that, described Abis interface monitoring subsystem comprises:
The Abis signal collecting module is used for from Abis interface collection network signaling;
Abis signalling analysis processing module is used for the network signal of described Abis signal collecting module collection is carried out analyzing and processing;
Abis shows enquiry module, is used to show, inquire about and exports the analysis processing result of obtaining from described Abis signalling analysis processing module.
3. GSM-R network interface monitoring system according to claim 1 is characterized in that, described A interface monitoring subsystem comprises:
A interface signaling acquisition module is used for from A interface collection network signaling;
A interface signaling analysis and processing module is used for the network signal of described A interface signaling acquisition module collection is carried out analyzing and processing;
The A interface shows enquiry module, is used to show, inquire about and exports the analysis processing result of obtaining from described A interface signaling analysis and processing module.
4. GSM-R network interface monitoring system according to claim 1 is characterized in that, described PRI interface monitoring subsystem comprises:
The PRI acquisition module is used for from the row control data of transmitting between PRI interface collection network signaling and the car ground;
The PRI analysis and processing module is used for the network signal and the described row control data of the collection of described PRI acquisition module are carried out analyzing and processing.
5. according to the arbitrary described GSM-R network interface monitoring system of claim 1 to 4, it is characterized in that, also comprise:
Gateway subsystem is used to realize two communications between the described GSM-R network interface monitoring system.
6. according to the arbitrary described GSM-R network interface monitoring system of claim 1 to 4, it is characterized in that, also comprise:
Nms subsystem is used for described Abis interface monitoring subsystem, described A interface monitoring subsystem, described PRI interface monitoring subsystem, described The subsystem of comprehensive analysis and described gateway subsystem are carried out monitoring management.
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