CN103079220B - Train-ground synergetic distributed network management system and method for high-speed rail wide-band communication system - Google Patents

Abstract

The invention discloses a train-ground synergetic distributed network management system and method for a high-speed rail wide-band communication system. The train-ground synergetic distributed network management system for the high-speed rail wide-band communication system comprises an in-vehicle network management subsystem, a ground data relay station, a ground network management center and a management client, wherein the in-vehicle network management subsystem comprises a function management agent terminal, a management analysis processing module, a local database, a management southbound interface module and a management northbound interface module. According to the train-ground synergetic distributed network management system and method disclosed by the invention, aiming at the characteristic of the quick movement of a high-speed rail train, wireless bandwidth occupied by train-ground management information flow is reduced, and the high-efficiency reasonable management of the high-speed rail wide-band communication system is realized.

Description

The high-speed railway wide-band communication system collecting and distributing type network management system of working in coordination with and method car

Technical field

The present invention relates to a kind of network management system and method, particularly relate to a kind of network management system and the method that are applicable to high-speed railway wide-band communication system.

Background technology

Along with the development that China Express Railway is built, bullet train becomes the important vehicles that passenger goes on a journey at a distance, and meanwhile, passenger is day by day urgent to the demand of carrying out high-quality communication and digital entertainment service on bullet train.External by satellite technology, GPRS(GPRS at present) and UMTS(universal mobile telecommunications system) technology combines with WiFi wireless network, and the cross-border train of speed per hour up to 300km/h provides unbroken wireless broadband internet to connect; And have people to propose based on WiMAX(World Interoperability for Microwave Access, WiMax) the Train Detection and Identification network of technology replaces existing based on GSM-R(Railway Mobile Radio standard) train operation control system of network, while signal control data transmission bandwidth, provide diversified network service.And domestic passenger converses on bullet train and surf the Net mainly based on existing 2G, 3G public mobile network network.Compared with conventional wireless network overlay environment, under high-speed railway environment, because Train motion speed is fast and car body loss is large, cause wireless signal Doppler effect obvious, network switches frequent, easily there is phenomenons such as cannot connecting, frequent call drop, speech are interrupted in the terminal use on bullet train, has had a strong impact on communication quality and the service experience of passenger.

Developing into of LTE technology builds high-speed railway wide-band communication system in recent years, provides high speed, stable communication quality and rich and varied Consumer's Experience to provide solution to passenger.Particularly TD-LTE technology is the communication technology standard that China has core independent intellectual property right, and the 3-G (Generation Three mobile communication system) standard TD-SCDMA proposed with China coexists.In order to realize high-speed railway broadband communication network to multiclass wireless communications application such as 2G/3G/LTE and WiFi, the high-speed railway wide-band communication system private network design based on TD-LTE is paid close attention to.This system comprises vehicle-mounted net system, Access Network subsystem and core network subsystem three parts.Overall system frame diagram as shown in Figure 1.

The vehicle network element that vehicle-mounted net system mainly comprises, vehicle network element has: Vehicle mounted station, car borne gateway, In-vehicle networking, the micro-base station unit of vehicle-mounted 2G/3G and Wi-Fi hotspot.Vehicle mounted station directly and ground TD-LTE base station communication, is responsible for the large-capacity data transmission passage building car-ground.Access Network subsystem comprises base station eNodeB, is made up of baseband processing unit BBU and wireless remote unit R RU.Core network subsystem comprises mobile management device MME, gateway S-GW, packet data network gateway P-GW, home signature user server HSS, strategy and charging control unit PCRF and access controller.

In order to ensure based on high-speed railway wide-band communication system run stability and reliability, realize the function such as information exchange, resource-sharing, fault location, performance evaluation towards network-wide basis, the network management research being applicable to high-speed railway wide-band communication system becomes the key issue needing to solve.Due to high-speed railway self, there is a lot of difference between the network management of high-speed railway wide-band communication system and traditional mobile communications network management, mainly comprise the following aspects:

(1) particularity of network management object

Vehicle-mounted net system, except comprising traditional Access Network and core network subsystem, is also incorporated management area by the management of high-speed railway wide-band communication system.Vehicle-mounted net system, with train high-speed mobile, brings complexity and peculiar property to network management.Train-ground communication limited bandwidth resources, needs to support the multiple business such as speech, video, data.Therefore, management method and the means of enforcement, must be simple, reliable, saves frequency spectrum resource and computational resource.

(2) difference in network management structure

Traditional network management structure is divided into centralized management pattern and distributed management pattern, and traditional network management system adopts single management mode usually.Based on the feature of high-speed railway broadband communication network, terrestrial access network and its network configuration of core network subsystem simple, and network element kind in onboard subsystem is more, management information transmission takies the communication bandwidth between car ground, single employing centralized network ma nagement or distributed network management tactic pattern all improper.

(3) difference of network management information acquisition mode

Network management structure not adopt centralized or distributed management, single periodicity poll drainage pattern or trap can not be adopted automatically to report mechanism, different supervisory communications agreements should be adopted in different administrative structures, sometimes even also need to adopt different management agreements towards different management functions in same administrative structure, realize gathering efficiently management information; Meanwhile, vehicle-mounted sub-network is among high-speed motion with train, and the collection of management information also needs to consider efficient and real-time effective compromise.

(4) real-time of network management is different from reliability requirement

Major part train is all operate on different kinds of railways track by timetable, this just makes the communication link between vehicle-mounted net node and node be in unlike ground-based computer network on fixing position, but constantly change in time, the cyclic variation of topological structure, require to network implementation real-time, the management of movement.Meanwhile, the Doppler frequency shift brought due to train high-speed motion and fast switching, make the communication link between car ground may there is the larger error rate, the repeating transmission of information, even cause the interruption of communication link, affect propagation delay.Therefore, the management of Information Network will have very strong fault-tolerant ability.

Summary of the invention

The technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, the high-speed railway wide-band communication system collecting and distributing type network management system of working in coordination with while a kind of car is provided and method, for the feature of High Speed Railway Trains rapid movement, reduce management information flow between car ground and take wireless bandwidth, realize network-efficient, reasonably manage.

The technology of the present invention solution: the high-speed railway wide-band communication system collecting and distributing type network management system of working in coordination with, comprises In-vehicle networking management subsystem, ground data relay station, ground network administrative center and administrative client, as shown in Figure 2 car.

Described In-vehicle networking management subsystem comprises function management proxy module, administrative analysis processing module, local data base, management southbound interface module, management northbound interface module, wherein:

Function management proxy module, receive the control command from ground network administrative center by management northbound interface module, described control command comprises configuration management, fault management, performance management three kinds of instructions; Configuration management process, fault management process and performance management process are produced respectively for described three kinds of instructions, by management southbound interface module, the vehicle network element in vehicle-mounted net system is managed for configuration, the task of fault management and performance management arranges; Received the response of the vehicle network element in vehicle-mounted net system simultaneously by management southbound interface module, comprise configuration parameter reply, fault warning information and performance statistics parameter; Configuration parameter is replied and is not done extra process, and fault warning information and performance statistics parameter send administrative analysis module to;

Administrative analysis processing module, receive fault warning information and the performance statistics parameter of function management proxy module, filter out the real-time status information data of vehicle network element in vehicle-mounted net system (comprising normal work and non-normal working two states), ground network administrative center is sent to through wireless link by management northbound interface module, so that ground network administrative center can understand the running status of each onboard subsystem all sidedly, and fault warning information after filtering and performance statistics parameter are saved to local data base in vehicle-mounted management subsystem, train when passing through a station through staff's manual operation, fault warning information and performance statistics parameter are delivered to ground data relay station by management northbound interface module,

Local data base, realizes the fault warning information after to filtration and performance statistics parameter is preserved;

Management southbound interface module, realizes the communication connection of the vehicle network element in In-vehicle networking management subsystem and vehicle-mounted net system;

Management northbound interface module, realizes the communication connection of In-vehicle networking management subsystem and ground network administrative center and ground data relay station;

Ground data relay station, there is provided and the fault warning information of local data base and the data high-speed download channel of performance statistics parameter are kept to vehicle-mounted net system, ground data relay station is distributed in railway station on the way, by Fiber connection ground network administrative center, support that ground network administrative center realizes the management function to vehicle-mounted net systems all in railway line;

Ground network administrative center, realize the centralized management of the Access Network subsystem to ground, core network subsystem and each vehicle-mounted net system, be the core of whole network management system, described ground network administrative center comprises information acquisition module, data processing module, management function module, management strategy service module and management database; Wherein:

Information acquisition module, adopt supervisory communications agreement and the management interface of diversification, achieve a butt joint into net system, the information gathering of the vehicle network element of the network element in core network subsystem and vehicle-mounted net system, information gathering mode comprises synchronous acquisition and asynchronous collecting two kinds, to terrestrial access network subsystem, in core network subsystem, the synchronous acquisition of network element is taken the initiative polling mode, regularly triggered by the management function module of ground network administrative center, to Access Network subsystem, the asynchronous collecting of the network element in core network subsystem directly receives Access Network subsystem when the condition of setting is triggered time, the fault warning information of the network element in core network subsystem, to the information gathering of vehicle network element in two kinds of situation, the status information data that on the one hand vehicle network element is real-time is directly gathered by the management northbound interface module of wireless link from In-vehicle networking management subsystem, and the fault warning information of vehicle network element and performance statistics parametic fault information and performance statistic then gather from ground data relay station on the other hand, the topology information comprising the system of Access Network subsystem, core network subsystem and vehicle-mounted net system, configuration information, fault warning information, performance statistics parameter and the security information that are collected are transferred to data processing module,

Data processing module, the topology information obtained from information acquisition module, configuration information, fault warning information, performance statistics parameter and security information are carried out taxonomic revision and tissue, the topology information of Access Network subsystem, core network subsystem and all network elements of vehicle-mounted net system and configuration information are carried out backed up in synchronization; Be normalized fault warning information, unified fault warning information format, carries out redundant filtration to the fault warning information repeated; Performance statistics parameter arranges by NE type-network element numbering-time point; Security information in chronological sequence arranges; And by the topology information after above-described process, configuration information, fault warning information, performance statistics parameter and security information stored in management database;

Management database, stores topology information, configuration information, fault warning information, performance statistics parameter and the security information data after data processing module process, and the fault warning information after the renewal of receiving management function module;

Management function module, receive the management control command from administrative client, described control command comprises Topology Management, configuration management, fault management, performance management and safety management; Topological polling procedure, configuration management process, fault warning managing process, performance management process and safety management process are produced respectively for above five kinds of instructions; The management resource optimal design-aside of receiving management policy service module, regularly gives information acquisition module trigger message acquisition instructions; The fault management optimal design-aside of receiving management policy service module, carries out classification process to the fault data of management database, optimizes fault management capability, finally the fault management result of optimization is returned management database update; By the data of Access Management Access database, complete the dynamically updating of topology, synchronous, the statistical computation of performance data of configuration information and the qualification of security permission, and above topology information, configuration information, performance result of calculation, security permission qualification result are returned administrative client;

Management strategy service module, as the input of management function module, stores management resource optimization and fault management optimisation strategy; Management resource optimisation strategy, based on trap-directed polling way to manage, can reduce the flow that network management is introduced effectively; Fault management optimisation strategy adopts the strategy of fault level, Real-time Alarm collection, alarm ex-post analysis, improves fault management efficiency; Management strategy service module additionally provides policy library as expansion interface, submits new management strategy to for administrative client;

Administrative client, the visual and data visualization of complete operation, provides friendly man-machine interface, and input Topology Management, configuration management, fault management, performance management and safety management five kinds management control command, complete the visual output of each management result.Administrative client also provides strategy setting interface, arranges management strategy for administrative staff.

Described management resource optimisation strategy realizes as follows: first, ground network administrative center carries out poll with the network element of the cycle of setting to the Access Network subsystem on ground, core network subsystem and each vehicle-mounted net system, wherein the poll of the network element of terrestrial access network subsystem and core network subsystem is directly performed by ground network administrative center, and poll instruction issuing is just managed subsystem to In-vehicle networking by the poll of the network element of vehicle-mounted net system; The network element of this vehicle-mounted net system of In-vehicle networking management subsystem poll; The data collection activity of configuration management, fault management can both directly be realized by snmp protocol; To the situation of performance data collection, transmitted the data file of XML format by File Transfer Protocol.

Described fault management optimisation strategy realizes as follows: be divided into urgent class, important class, secondary class, prompting class four grades to fault warning is hierarchical; Fault for urgent class, important class is carried out Real-time Alarm and is got rid of in time; By the failure logging of secondary class, prompting class in error log; Finally according to the record of fault warning, the fault message of analytic statistics high-speed railway wide-band communication system, improves the efficiency of fault management.

The high-speed railway wide-band communication system collecting and distributing type network management step of working in coordination with as follows car:

(1) administrative client signs in ground network administrative center, safety certification is carried out by the safety management process of management function module, the keeper's identity information set in Access Management Access database, determine to possess system manager's identity, administrative client will be returned by authentication result, administrative client can arrange management role, forms Topology Management, configuration management, fault management, performance management control command, generates security log simultaneously;

(2) the management function module of ground network administrative center receives the task setting of client, starts to call management strategy service module; Management strategy service module stores management resource optimisation strategy and alarming processing optimisation strategy.Management resource optimisation strategy adopts trap-directed polling mechanism, and alarming processing optimisation strategy adopts the mechanism of Real-time Alarm collection, alarm ex-post analysis;

(3) the management function module of ground network administrative center opens Topology Management, configuration management, fault management, performance management process, and notification data acquisition module starts to gather topology information, configuration information, fault message, performance data and security information;

(4) because management resource optimisation strategy adopts trap-directed polling mechanism, first, ground network administrative center with setting cycle to the Access Network subsystem on ground, the network element of core network subsystem and each vehicle-mounted net system carries out poll, wherein the poll of terrestrial access network subsystem and core network subsystem network element is directly performed by ground network administrative center, Topology Management, configuration management, the data collection activity of fault management can directly be realized by snmp protocol, but to the situation of a large amount of performance data collection, the data file of XML format is transmitted by File Transfer Protocol, and poll instruction issuing is just managed subsystem to In-vehicle networking by the poll of vehicle-mounted net system network element,

(5) after the function management proxy module of In-vehicle networking management subsystem receives the polling order of ground network administrative center by management northbound interface module, just perform polling tasks at each In-vehicle networking subsystem based on snmp protocol, by management southbound interface module, parameter configuration, fault information acquisition, performance tasks collection are carried out to the vehicle network element in outside In-vehicle networking subsystem; Received fault warning information, the performance parameter of the vehicle network element in outside In-vehicle networking subsystem by management southbound interface module simultaneously; Fault warning information and performance parameter send administrative analysis module to;

(6) the administrative analysis processing module of In-vehicle networking management subsystem receives fault warning information and the performance parameter of function management proxy module, filter out the status information data that vehicle network element is real-time, send trap information by management northbound interface module through wireless link and send ground network administrative center to, so that ground network administrative center can understand the running status of whole In-vehicle networking all sidedly, and fault warning data, the statistical analysis of performance data after filtering are saved to the local data base in vehicle-mounted management subsystem;

(7) ground network administrative center receives the trap message of In-vehicle networking management subsystem, adopt the architecture of client/server, wherein ground network administrative center is as client, In-vehicle networking management subsystem is as server, by setting up Socket communication mode, poll being carried out to all In-vehicle networking management subsystems in real time, sending the real time status information of the vehicle network element of each vehicle-mounted net system to ground network administrative center;

(8) for the fault warning data, the statistical analysis of performance data that are saved to local data base in vehicle-mounted management subsystem, File Transfer Protocol is adopted by optical cable High Speed Transfer to the ground data relay station being deployed in station by management northbound interface module after train enters the station, finally by the data acquisition module timing data relay stations request msg earthward of ground network administrative center, transmitted in the mode of file by File Transfer Protocol equally;

(9) ground network administrative center successful acquisition is to the management data of terrestrial access network subsystem, core network subsystem and vehicle-mounted net system network element, carries out taxonomic revision and tissue, and the topology information of network element and configuration information are carried out backed up in synchronization; Be normalized fault data, unified fault alarm message format, carries out redundant filtration to the information repeated; Performance data arranges by NE type-network element numbering-time point; Security log information in chronological sequence arranges; And by the data after above-described process stored in management database;

(10) the management function module of ground network administrative center completes the statistical computation of synchronous, performance data of the dynamically updating of topology, configuration information by the data of Access Management Access database, owing to have employed troubleshooting optimisation strategy, first hierarchical to fault warning, carry out Real-time Alarm for important fault and get rid of in time, not serious simple fault is recorded in error log; And then afterwards according to the information of data record analytic statistics network failure, improve the efficiency of fault management;

(11) above topology information, configuration information, performance result of calculation, fault warning result are finally returned administrative client by the management function module of ground network administrative center, complete the visual output of each management result.Administrative client also provides strategy setting interface, arranges management strategy for administrative staff.

The present invention's advantage is compared with prior art:

(1) management system of the present invention, management organization layer of structure: ground network administrative center adopts centralized management, gathered the data of the subsystems such as terrestrial access network, core net, vehicle-mounted net by standard interface, realize the function such as information exchange, resource-sharing, fault location, performance evaluation towards network-wide basis; In-vehicle networking management subsystem, realizes the management to mobile unit; The relaying of the complete paired data of ground data relay station and buffer memory.The bulk information that such system configuration avoids between onboard subsystem and ground network administrative center is mutual, considerably reduce the data traffic needed through transmission of wireless signals, the complementary network load that network management produces greatly reduces, the network management function also decoupling zero from terrestrial network guard system of onboard subsystem, adds flexibility and the autgmentability of system.

(2) a kind of diversification information gathering mechanism of the present invention's proposition, consider multistage administrative structure, the administrative center of torus network adaptedly that the supervisory communications agreement of diversification and management interface can be distinguished and In-vehicle networking manage the communication of subsystem and managed element, improve efficiency and the reliability of information gathering.

(3) a kind of trap-directed polling management strategy based on manage traffic cost optimization of the present invention's proposition.This strategy take manage traffic as target function, by the enforcement of management strategy, effectively can reduce the flow that network management is introduced.

(4) high-speed railway broadband communication network fault management of the present invention adopts the strategy of fault level, Real-time Alarm collection, ex-post analysis.By the Real-Time Monitoring to network composition unit status, not serious simple fault is recorded in error log usually; Serious fault then produces alarm.Based on the kinetic characteristic of bullet train, generally first by network restoration, and then afterwards according to the information of data record analytic statistics network failure, improve the efficiency of fault management.

Accompanying drawing explanation

Fig. 1 is high-speed railway wide-band communication system overall construction drawing;

Fig. 2 is structure composition frame chart of the present invention;

Fig. 3 is information gathering mode figure of the present invention;

Fig. 4 is ground network management system and In-vehicle networking Management System Data interaction diagrams in the present invention.

Embodiment

As shown in Figure 2, network management system of the present invention manages subsystem, ground data relay station, ground network administrative center and administrative client by In-vehicle networking and forms.Communication in ground network administrative center and vehicle-mounted net system between network element need be transmitted by wireless channel, limited bandwidth, is to save bandwidth, the collecting and distributing type managerial structure of working in coordination with adopting car.

Ground network administrative center is in the top of management organization structure, and it is deployed in ground machine room, by standard network interface tube acquisition management data, realizes the management function towards network-wide basis.Each vehicle-mounted net system is divided into single independently management domain, is in the lower level of ground network management system.In each vehicle-mounted net system, set up an In-vehicle networking management subsystem as the manager of this management domain, and ground network administrative center is as master administrator, the network element of each manager of unified management and terrestrial access network and core net.

Described In-vehicle networking management subsystem comprises function management proxy module, administrative analysis processing module, local data base, management southbound interface module, management northbound interface module, wherein:

Function management proxy module, receive the control command from ground network administrative center by management northbound interface module, described control command comprises configuration management, fault management, performance management three kinds of instructions; Configuration management process, fault management process and performance management process are produced respectively for described three kinds of instructions, by management southbound interface module, the vehicle network element in vehicle-mounted net system is managed for configuration, the task of fault management and performance management arranges; Received the response of the vehicle network element in vehicle-mounted net system simultaneously by management southbound interface module, comprise configuration parameter reply, fault warning information and performance statistics parameter; Configuration parameter is replied and is not done extra process, and fault warning information and performance statistics parameter send administrative analysis module to;

Administrative analysis processing module, receive fault warning information and the performance statistics parameter of function management proxy module, filter out the real-time status information data of vehicle network element in vehicle-mounted net system (comprising normal work and non-normal working two states), ground network administrative center is sent to through wireless link by management northbound interface module, so that ground network administrative center can understand the running status of each onboard subsystem all sidedly, and fault warning information after filtering and performance statistics parameter are saved to local data base in vehicle-mounted management subsystem, train when passing through a station through staff's manual operation, fault warning information and performance statistics parameter are delivered to ground data relay station by management northbound interface module,

Local data base, realizes the fault warning information after to filtration and performance statistics parameter is preserved;

Management southbound interface module, realizes the communication connection of the vehicle network element in In-vehicle networking management subsystem and vehicle-mounted net system;

Management northbound interface module, realizes the communication connection of In-vehicle networking management subsystem and ground network administrative center and ground data relay station;

Ground network administrative center, realize the centralized management of the Access Network subsystem to ground, core network subsystem and each vehicle-mounted net system, be the core of whole network management system, described ground network administrative center comprises information acquisition module, data processing module, management function module, management strategy service module and management database; Wherein:

Information acquisition module, adopt supervisory communications agreement and the management interface of diversification, achieve a butt joint into net system, the information gathering of the vehicle network element of the network element in core network subsystem and vehicle-mounted net system, information gathering mode comprises synchronous acquisition and asynchronous collecting two kinds, to terrestrial access network subsystem, in core network subsystem, the synchronous acquisition of network element is taken the initiative polling mode, regularly triggered by the management function module of ground network administrative center, to Access Network subsystem, the asynchronous collecting of the network element in core network subsystem directly receives Access Network subsystem when the condition of setting is triggered time, the fault warning information of the network element in core network subsystem, to the information gathering of vehicle network element in two kinds of situation, the status information data that on the one hand vehicle network element is real-time is directly gathered by the management northbound interface module of wireless link from In-vehicle networking management subsystem, and the fault warning information of vehicle network element and performance statistics parametic fault information and performance statistic then gather from ground data relay station on the other hand, the topology information comprising the system of Access Network subsystem, core network subsystem and vehicle-mounted net system, configuration information, fault warning information, performance statistics parameter and the security information that are collected are transferred to data processing module,

Data processing module, the topology information obtained from information acquisition module, configuration information, fault warning information, performance statistics parameter and security information are carried out taxonomic revision and tissue, the topology information of Access Network subsystem, core network subsystem and all network elements of vehicle-mounted net system and configuration information are carried out backed up in synchronization; Be normalized fault warning information, unified fault warning information format, carries out redundant filtration to the fault warning information repeated; Performance statistics parameter arranges by NE type-network element numbering-time point; Security log information in chronological sequence arranges; And by the topology information after above-described process, configuration information, fault warning information, performance statistics parameter and security information stored in management database;

Management database, stores topology information, configuration information, fault warning information, performance statistics parameter and the security information data after data processing module process, and the fault warning information after the renewal of receiving management function module;

Management function module, receive the management control command from administrative client, described control command comprises Topology Management, configuration management, fault management, performance management and safety management; Topological polling procedure, configuration management process, fault warning managing process, performance management process and safety management process are produced respectively for above five kinds of instructions; The management resource optimal design-aside of receiving management policy service module, regularly gives information acquisition module trigger message acquisition instructions; The fault management optimal design-aside of receiving management policy service module, carries out classification process to the fault data of management database, optimizes fault management capability, finally the fault management result of optimization is returned management database update; By the data of Access Management Access database, complete the dynamically updating of topology, synchronous, the statistical computation of performance data of configuration information and the qualification of security permission, and above topology information, configuration information, performance result of calculation, security permission qualification result are returned administrative client;

Management strategy service module, as the input of management function module, stores management resource optimization and fault management optimisation strategy; Management resource optimisation strategy, based on trap-directed polling way to manage, can reduce the flow that network management is introduced effectively; Fault management optimisation strategy adopts the strategy of fault level, Real-time Alarm collection, alarm ex-post analysis, improves fault management efficiency; Management strategy service module additionally provides policy library as expansion interface, submits new management strategy to for administrative client.

The realization of high-speed railway broadband communication network management system, also add ground data relay station.Conveniently with the communication of onboard subsystem, ground data relay station is based upon in station on the way by the present invention's design, management data high-speed downloads passage to vehicle-mounted net system is provided, In-vehicle networking management subsystem is connected by optical fiber with between ground data relay station, can realize the High Speed Transfer of mass data within the limited time (time that train enters the station).Data relay stations supports that ground network administrative center realizes the management function to vehicle-mounted net systems all in railway line.

High-speed railway broadband communication network administrative client, visual and the data visualization of complete operation, there is provided friendly man-machine interface, input Topology Management, configuration management, fault management, performance management and safety management five kinds management control command, complete the visual output of each management result.Administrative client also provides strategy setting interface, arranges management strategy for administrative staff.

The high-speed railway wide-band communication system collecting and distributing type network management of working in coordination with in specific implementation process car, and key step is as follows:

(1) administrative client signs in ground network administrative center, safety certification is carried out by the safety management process of management function module, the keeper's identity information set in Access Management Access database, determine to possess system manager's identity, administrative client will be returned by authentication result, administrative client can arrange management role, forms Topology Management, configuration management, fault management, performance management control command, generates security log simultaneously;

(2) the management function module of ground network administrative center receives the task setting of client, starts to call management strategy service module; Management strategy service module stores management resource optimisation strategy and alarming processing optimisation strategy.Management resource optimisation strategy adopts trap-directed polling mechanism, and alarming processing optimisation strategy adopts the mechanism of Real-time Alarm collection, alarm ex-post analysis;

Method for a better understanding of the present invention, the network management traffic component analysis based on trap-directed polling mechanism is as follows:

Assuming that there is N number of network element in train, for simplifying the analysis, assuming that regardless of under which kind of management mode, the request bag mean size that network management system performs management role to this N number of network element is R, and the packet mean size that network element returns is the packet mean size that network element initiatively reports to network management system is S, and the packet mean size of network management system loopback is

In traditional centralized management pattern, network management system needs to carry out poll to whole network, the network traffics that poll once produces assuming that within the unit interval, network management system is P to the probability of certain network element request of executing the task _central, each network element needs active to be Q to the probability of network management system reported data _central, the polling cycle of network management system is T, then, in time t, the network management traffic that whole network produces all needs by radio channel transmission between car ground.Flow formula is:

$F_{\mathrm{central}}=\frac{t}{T}{F}_{\mathrm{poll}}+t{\mathrm{NP}}_{\mathrm{central}}\·(R+\tilde{R})+t{\mathrm{NQ}}_{\mathrm{central}}\·(S+\tilde{S})$

$=\frac{t}{T}(\mathrm{NR}+N\tilde{R})+{\mathrm{tNP}}_{\mathrm{central}}\·(R+\tilde{R})+t{\mathrm{NQ}}_{\mathrm{central}}\·(S+\tilde{S})$

$=\mathrm{tN}[\frac{1}{T}\·(R+\tilde{R})+P_{\mathrm{central}}\·(R+\tilde{R})+Q_{\mathrm{central}}\·(S+\tilde{S})]...\left(1\right)$

In the hierarchical distributed networks management mode of design, because a part of Network Management Function is transferred to In-vehicle networking management system by ground network management system.This part Network Management Function comprises: (1) carries out periodicity poll to In-vehicle networking; (2) collection of performance data and storage; (3) process of most alarm and configuration information.Therefore, can not radio channel be taken to the flow that the poll of network produces, because ground network management system is only concerned about the state information that a part is crucial and serious warning information, therefore ground network management system to the vehicle network element request of executing the task probability P _hierarchybe less than P _central, the probability Q of vehicle network element webmaster active upload data earthward _hierarchybe less than Q _central.The network management traffic flowing through radio channel is:

$F_{\mathrm{hierarchy}}=t{\mathrm{NP}}_{\mathrm{hierarchy}}\·(R+\tilde{R})+t{\mathrm{NQ}}_{\mathrm{hierarchy}}\·(S+\tilde{S})$ $...\left(2\right)$

$=\mathrm{tN}[P_{\mathrm{hierarchy}}\·(R+\tilde{R})+Q_{\mathrm{hierarchy}}\·(S+\tilde{S})]$

Based on upper surface analysis, (2) formula and (1) formula are contrasted, can find under the high-speed railway broadband communication network management organization structure of design, apply the machine-processed expense that really can reduce manage traffic of trap-directed polling based on manage traffic cost optimization.

(3) the management function module of ground network administrative center opens Topology Management, configuration management, fault management, performance management process, and notification data acquisition module starts to gather topology information, configuration information, fault message, performance data and security information;

(4) owing to adopting the institutional framework of layer-stepping, in order to realize the collection of topology information, configuration information, fault message, performance data and security information data, the agreement of use as shown in Figure 3.Because management resource optimisation strategy adopts trap-directed polling mechanism, first, ground network administrative center carries out poll with the vehicle network element of cycle to terrestrial network unit (network element of Access Network subsystem, core network subsystem) and each vehicle-mounted net system not too frequently.Between ground network element and ground network administrative center, to manage what adopt between subsystem be centralized management pattern for vehicle network element and In-vehicle networking, mainly based on SNMP(SimpleNetwork Management Protocol) agreement communicates.Wherein the poll of ground network element is directly performed by ground network administrative center, the data collection activity of network topological information, configuration information, fault message can directly be realized by snmp protocol, but for the hundreds of million even performance data collection of greater number, then formed the performance data files of XML format by ground network element, then communicated with ground network administrative center by File Transfer Protocol.And poll instruction issuing is just managed subsystem to In-vehicle networking by the poll of the vehicle network element of vehicle-mounted net system;

(5) after the function management proxy module of In-vehicle networking management subsystem receives the polling order of ground network administrative center by management northbound interface module, just perform polling tasks at each In-vehicle networking subsystem based on snmp protocol, by management southbound interface module, parameter configuration, fault information acquisition, performance tasks collection are carried out to the vehicle network element in outside In-vehicle networking subsystem; Received fault warning information, the performance parameter of the vehicle network element in outside In-vehicle networking subsystem by management southbound interface module simultaneously; Fault warning information and performance parameter send administrative analysis module to;

(6) the administrative analysis processing module of In-vehicle networking management subsystem receives fault warning information and the performance parameter of function management proxy module, filter out the status information data that vehicle network element is real-time, send trap information by management northbound interface module through wireless link and send ground network administrative center to, so that ground network administrative center can understand the running status of whole In-vehicle networking all sidedly, and fault warning data, the statistical analysis of performance data after filtering are saved to the local data base in vehicle-mounted management subsystem;

(7) ground network administrative center receives the trap message of In-vehicle networking management subsystem, adopt the architecture of client/server, wherein ground network administrative center is as client, In-vehicle networking management subsystem is as server, by setting up Socket communication mode, poll being carried out to all In-vehicle networking management subsystems in real time, sending the real time status information of the vehicle network element of each vehicle-mounted net system to ground network administrative center;

For the consideration to network reliability and efficiency of transmission aspect, In-vehicle networking management subsystem provides two socket ports, one is management control socket, and one is transfer of data socket.Management controls socket only to transmit the management such as login, model selection, request of data and controls message, and transfer of data socket only transmits and managing the data controlling socket is asked.Like this, when transmission data, still can manage subsystem to In-vehicle networking and carry out management control.When In-vehicle networking management subsystem controls socket receives request of data in management, will with the form of ascii character stream transmission data on transfer of data socket.In addition, some non real-time data comprise fault warning data, statistical analysis of performance data then spanned file, after train enters the station, adopt File Transfer Protocol to be sent to ground data relay station, finally by ground network administrative center timing data relay stations request msg earthward, transmitted in the mode of file by File Transfer Protocol equally.A large amount of data are sent to ground by such mode, greatly reduce the network management data amount transmitted by wireless link between car ground, ensure the service quality of user further.

Ground network administrative center and In-vehicle networking management subsystem data interaction flow are as shown in Figure 4.

◆ initiatively initiated to log in message LOGIN by ground network administrative center, this message comprises username and password, and the relay transmission through base station eNodeB and Vehicle mounted station manages subsystem to In-vehicle networking;

◆ In-vehicle networking management subsystem carries out the login authentication of username and password;

◆ after login authentication is passed through, In-vehicle networking management subsystem returns to log in replys message LOGIN_ACK, be transferred to ground network administrative center through Vehicle mounted station and eNodeB, now between ground network administrative center and In-vehicle networking management subsystem, establish management and control socket;

◆ ground network administrative center controls socket sends request of data message GET_DATA in management, and the relay transmission through eNodeB and Vehicle mounted station manages subsystem to In-vehicle networking;

◆ In-vehicle networking management subsystem carries out authentication and data validation inspection;

◆ after upchecking, In-vehicle networking management subsystem returns response message GET_DATA_ACK, is transferred to ground network administrative center through Vehicle mounted station and eNodeB;

◆ In-vehicle networking management subsystem initiatively sets up transfer of data socket with ground network administrative center, and on transfer of data socket, send the data DATA of ground network administrative center request;

◆ after when ground network management system, on management control socket, message LOGOUT is published in transmission, management controls socket and transfer of data socket is removed, DTD.

Performance data produces independently XML format file respectively by NE type-network element numbering-time point, and under being stored into the fixing catalogue of In-vehicle networking management subsystem.

(8) for the fault warning data, the statistical analysis of performance data that are saved to local data base in vehicle-mounted management subsystem, File Transfer Protocol is adopted by optical cable High Speed Transfer to the ground data relay station being deployed in station by management northbound interface module after train enters the station, finally by the data acquisition module timing data relay stations request msg earthward of ground network administrative center, transmitted in the mode of file by File Transfer Protocol equally;

(9) ground network administrative center successful acquisition is to the management data of terrestrial access network subsystem, core network subsystem and vehicle-mounted net system network element, carries out taxonomic revision and tissue, and the topology information of network element and configuration information are carried out backed up in synchronization; Be normalized fault data, unified fault alarm message format, carries out redundant filtration to the information repeated; Performance data arranges by device type-network element numbering-time point; Security log information in chronological sequence arranges; And by the data after above-described process stored in management database;

(10) the management function module of ground network administrative center completes the statistical computation of synchronous, performance data of the dynamically updating of topology, configuration information by the data of Access Management Access database, owing to have employed troubleshooting optimisation strategy, first hierarchical to fault warning, high-speed railway broadband communication network accident design is divided into 4 classes, comprising:

Urgent class: the service that this type of fault effects provides to system, needs to take corresponding actions immediately.As device resource is completely unavailable, need repair.

Important class: this type of fault effects, to service quality, needs to take emergency action.As equipment or resource service Quality Down, need reduce to it, recover whole ability.

Secondary class: this type of alarm does not also have influence on service quality, but in order to avoid more serious fault, need to carry out in due course processing or observing further.

Prompting class: this type of alarm instruction may have potential erroneous effects to the service provided, and corresponding measure processes according to different mistakes.

After the fault level that will receive, implement alarm filter.Step comprises:

The time of origin interval of same alarm on same network element is less than repeating of specifying and judges interval time, then think and there occurs event alarm repeated events, and then selects a rear event alarm to delete or shielding according to setting.

On same network element, same alarm produces and then recovers, if the time of origin interval of recovering alarm for twice is less than the flash of specifying judge interval time, then judges to there occurs fault flash phenomenon.

If there is " resonance " characteristic alarm of " occur, or disappear " simultaneously simultaneously, only retain a kind of alarm.

The combination of different alarm sometimes and precedence may represent certain special failure condition, at this time can shield some alarm as required or produce the alarm of new representative this kind of failure and special, original alarm be eliminated simultaneously.

Fault for urgent class, important class is carried out Real-time Alarm and is got rid of in time; By the failure logging of secondary class, prompting class in error log; Finally according to the record of fault warning, the fault message of analytic statistics high-speed railway wide-band communication system, improves the efficiency of fault management;

(11) above topology information, configuration information, performance result of calculation, fault warning result are finally returned administrative client by the management function module of ground network administrative center, complete the visual output of each management result.Administrative client also provides strategy setting interface, arranges management strategy for administrative staff.

Invention car in the high-speed railway wide-band communication system collecting and distributing type network management of working in coordination with, the part do not described in detail belongs to the existing known technology of this area.

Claims (4)

1. a high-speed railway wide-band communication system collecting and distributing type network management system of working in coordination with, is characterized in that comprising car: In-vehicle networking management subsystem, ground data relay station, ground network administrative center and administrative client; Described In-vehicle networking management subsystem comprises function management proxy module, administrative analysis processing module, local data base, management southbound interface module, management northbound interface module, wherein:

Function management proxy module, receive the control command from ground network administrative center by management northbound interface module, described control command comprises configuration management, fault management, performance management three kinds of instructions; Configuration management process, fault management process and performance management process are produced respectively for described three kinds of instructions, by management southbound interface module, the vehicle network element in vehicle-mounted net system is managed for configuration, the task of fault management and performance management arranges; Received the response of the vehicle network element in vehicle-mounted net system simultaneously by management southbound interface module, comprise configuration parameter reply, fault warning information and performance statistics parameter; Configuration parameter is replied and does not deal with, administrative analysis module is sent to for fault warning information and performance statistics parameter;

Administrative analysis processing module, receive fault warning information and the performance statistics parameter of function management proxy module, filter out the real time status information data of the vehicle network element in vehicle-mounted net system, comprise normal work and non-normal working two states, ground network administrative center is sent to through wireless link by management northbound interface module, so that ground network administrative center can understand the running status of each vehicle-mounted net system all sidedly, and fault warning information after filtering and performance statistics parameter are saved to local data base in vehicle-mounted management subsystem, train when passing through a station through staff's manual operation, fault warning information and performance statistics parameter are delivered to ground data relay station by management northbound interface module,

Local data base, realizes the fault warning information after to filtration in administrative analysis processing module and performance statistics parameter is preserved;

Management southbound interface module, realizes the communication connection of the vehicle network element in In-vehicle networking management subsystem and vehicle-mounted net system;

Management northbound interface module, realizes the communication connection of In-vehicle networking management subsystem and ground network administrative center and ground data relay station;

Ground data relay station, there is provided and the fault warning information of local data base and the high-speed downloads passage of performance statistics parameter are kept to vehicle-mounted net system, ground data relay station is distributed in railway station on the way, by Fiber connection ground network administrative center, support that ground network administrative center realizes the management function to vehicle-mounted net systems all in railway line;

Ground network administrative center, realize the centralized management to terrestrial access network subsystem, core network subsystem and each vehicle-mounted net system in the high-speed railway wide-band communication system on ground, be the core of whole network management system, described ground network administrative center comprises information acquisition module, data processing module, management function module, management strategy service module and management database; Wherein:

Information acquisition module, adopt supervisory communications agreement and the management interface of diversification, achieve a butt joint into net system, the information gathering of the vehicle network element of the network element in core network subsystem and vehicle-mounted net system, information gathering mode comprises synchronous acquisition and asynchronous collecting two kinds, to terrestrial access network subsystem, the synchronous acquisition of the network element in core network subsystem is taken the initiative polling mode, regularly triggered by the management function module of ground network administrative center, to Access Network subsystem, the asynchronous collecting of the network element in core network subsystem directly receives Access Network subsystem when the condition of setting is triggered time, the fault warning information of the network element in core network subsystem, to the management information of vehicle network element, gather in two kinds of situation, the status information data that vehicle network element is real-time on the one hand is directly gathered by the management northbound interface module of wireless link from In-vehicle networking management subsystem, and fault warning information and the performance statistics parameter of another aspect vehicle network element then gather from ground data relay station, described management information comprises real-time state information, fault warning information and performance statistics parameter, the topology information comprising the system of Access Network subsystem, core network subsystem and vehicle-mounted net system, configuration information, fault warning information, performance statistics parameter and the security information that are collected are transferred to data processing module,

Data processing module, the topology information obtained from information acquisition module, configuration information, fault warning information, performance statistics parameter and security information are carried out taxonomic revision and tissue, the topology information of all network elements in Access Network subsystem, core network subsystem and vehicle-mounted net system and configuration information are carried out backed up in synchronization; Be normalized fault warning information, unified fault warning information format, carries out redundant filtration to the fault warning information repeated; Performance statistics parameter arranges by NE type-network element numbering-time point; Security information in chronological sequence arranges; And by the topology information after above-described process, configuration information, fault warning information, performance statistics parameter and security information stored in management database;

Management database, stores topology information, configuration information, fault warning information, performance statistics parameter and the security information data after data processing module process, and the fault warning information after the renewal of receiving management function module;

Management function module, receive the management control command from administrative client, described control command comprises Topology Management, configuration management, fault management, performance management and safety management; Topological polling procedure, configuration management process, fault warning managing process, performance management process and safety management process are produced respectively for above five kinds of instructions; The management resource optimal design-aside of receiving management policy service module, regularly gives information acquisition module trigger message acquisition instructions; The fault management optimal design-aside of receiving management policy service module, carries out classification process to the fault data of management database, optimizes fault management capability, finally the fault management result of optimization is returned management database update; By the data of Access Management Access database, complete the dynamically updating of topology information, synchronous, the calculating of performance data of configuration information and the qualification of security permission, and the result of calculation of above topology information, configuration information, performance data, the qualification result of security permission are returned administrative client;

Management strategy service module, as the input of management function module, stores management resource optimization and fault management optimisation strategy; Management resource optimisation strategy, based on trap-directed polling way to manage, can reduce the flow that network management is introduced effectively; Fault management optimisation strategy adopts the strategy of fault level, Real-time Alarm collection, alarm ex-post analysis, improves fault management efficiency; Management strategy service module additionally provides policy library as expansion interface, submits new management strategy to for administrative client;

Administrative client, the visual and data visualization of complete operation, provides friendly man-machine interface, and input Topology Management, configuration management, fault management, performance management and safety management five kinds management control command, complete the visual output of each management result; Administrative client also provides strategy setting interface, arranges management strategy for administrative staff.

2. the high-speed railway wide-band communication system collecting and distributing type network management system of working in coordination with car according to claim 1, it is characterized in that: described management resource optimisation strategy realizes as follows: first, ground network administrative center with setting cycle to the Access Network subsystem on ground, core network subsystem carries out poll with all network elements in each vehicle-mounted net system, the poll of the network element wherein in terrestrial access network subsystem and core network subsystem is directly performed by ground network administrative center, and poll instruction issuing is just managed subsystem to In-vehicle networking by the poll of network element in vehicle-mounted net system, network element in the vehicle-mounted net system of In-vehicle networking management subsystem poll, the data collection activity of configuration management, fault management can both directly be realized by snmp protocol, to the situation of performance data collection, transmitted the data file of XML format by File Transfer Protocol.

3. the high-speed railway wide-band communication system collecting and distributing type network management system of working in coordination with, is characterized in that car according to claim 1: described fault management optimisation strategy realizes as follows: be divided into urgent class, important class, secondary class, prompting class four grades to fault warning is hierarchical; Fault for urgent class, important class is carried out Real-time Alarm and is got rid of in time; By the failure logging of secondary class, prompting class in error log; Finally according to the record of fault warning, the fault message of analytic statistics high-speed railway wide-band communication system, improves the efficiency of fault management.

4. a high-speed railway wide-band communication system collecting and distributing type network management of working in coordination with, is characterized in that step is as follows car:

(1) administrative client signs in ground network administrative center, safety certification is carried out by the safety management process of management function module, the keeper's identity information set in Access Management Access database, determine to possess system manager's identity, administrative client will be returned by authentication result, administrative client arranges management role, forms Topology Management, configuration management, fault management, performance management control command, generates security log simultaneously;

(2) the management function module of ground network administrative center receives the task setting of client, starts to call management strategy service module; Management strategy service module stores management resource optimisation strategy and alarming processing optimisation strategy; Management resource optimisation strategy adopts trap-directed polling mechanism, and alarming processing optimisation strategy adopts the mechanism of Real-time Alarm collection, alarm ex-post analysis;

(3) the management function module of ground network administrative center opens Topology Management, configuration management, fault management, performance management process, and notification data acquisition module starts to gather topology information, configuration information, fault message, performance data and security information;

(4) because management resource optimisation strategy adopts trap-directed polling mechanism, first, ground network administrative center with setting cycle to the Access Network subsystem on ground, core network subsystem carries out poll with all network elements in each vehicle-mounted net system, the poll of the network element wherein in terrestrial access network subsystem and core network subsystem is directly performed by ground network administrative center, Topology Management, configuration management, the data collection activity of fault management is all direct to be realized by snmp protocol, but to the situation of performance data collection, the data file of XML format is transmitted by File Transfer Protocol, and poll instruction issuing is just managed subsystem to In-vehicle networking by the poll of vehicle network element in vehicle-mounted net system,

(5) after the function management proxy module of In-vehicle networking management subsystem receives the polling order of ground network administrative center by management northbound interface module, just perform polling tasks at each vehicle-mounted net system based on snmp protocol, by management southbound interface module, parameter configuration is carried out to the vehicle network element in vehicle-mounted net system, fault information acquisition task is arranged, performance parameter acquisition tasks is arranged; Receive by management southbound interface module fault warning information, the performance parameter that the vehicle network element in outside In-vehicle networking subsystem reports simultaneously; Fault warning information and performance parameter send administrative analysis module to;

(6) the administrative analysis processing module of In-vehicle networking management subsystem receives fault warning information and the performance parameter of function management proxy module, filter out the real time status information data of vehicle network element, send trap information by management northbound interface module through wireless link and send ground network administrative center to, so that ground network administrative center can understand the running status of whole In-vehicle networking all sidedly, and fault warning data, the statistical analysis of performance data after filtering are saved to the local data base in vehicle-mounted management subsystem;

(7) ground network administrative center receives the trap message of In-vehicle networking management subsystem, adopt the architecture of client/server, wherein ground network administrative center is as client, In-vehicle networking management subsystem is as server, by setting up Socket communication mode, poll being carried out to all In-vehicle networking management subsystems in real time, sending the real time status information of the vehicle network element of each vehicle-mounted net system to ground network administrative center;

(8) for fault warning data, the statistical analysis of performance data of the local data base be saved in vehicle-mounted management subsystem, File Transfer Protocol is adopted by optical cable High Speed Transfer to the ground data relay station being deployed in station by management northbound interface module after train enters the station, finally by the data acquisition module timing data relay stations request msg earthward of ground network administrative center, transmitted in the mode of file by File Transfer Protocol equally;

(9) ground network administrative center successful acquisition is to the management data of the network element in terrestrial access network subsystem, core network subsystem and vehicle-mounted net system, carry out taxonomic revision and tissue, the topology information of the vehicle network element in vehicle-mounted net system and configuration information are carried out backed up in synchronization; Be normalized fault data, unified fault alarm message format, carries out redundant filtration to the information repeated; Performance data arranges by NE type-network element numbering-time point; Security information in chronological sequence arranges; And by above process after data stored in management database;

(10) the management function module of ground network administrative center completes the statistical computation of synchronous, performance data of the dynamically updating of topology, configuration information by the data of Access Management Access database, owing to have employed troubleshooting optimisation strategy, first hierarchical to fault warning, enforcement fault warning is filtered, and the fault for urgent class, important class is carried out Real-time Alarm and got rid of in time; By the failure logging of secondary class, prompting class in error log; Finally according to the record of fault warning, the fault message of analytic statistics high-speed railway wide-band communication system, improves the efficiency of fault management;

(11) above topology information, configuration information, performance result of calculation, fault warning result are finally returned administrative client by ground network administrative center, and administrative client represents.