CN105391781A - Mobile vehicle-mounted terminal network management method for constructing stable vehicle-mounted network - Google Patents
Mobile vehicle-mounted terminal network management method for constructing stable vehicle-mounted network Download PDFInfo
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- CN105391781A CN105391781A CN201510760524.5A CN201510760524A CN105391781A CN 105391781 A CN105391781 A CN 105391781A CN 201510760524 A CN201510760524 A CN 201510760524A CN 105391781 A CN105391781 A CN 105391781A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention discloses a mobile vehicle-mounted terminal network management method for constructing a stable vehicle-mounted network and especially relates to a solution scheme for carrying out real-time management on a mobile vehicle-mounted terminal connected to a network by a base station. On the basis of error correction of GPS data information of a mobile vehicle-mounted terminal, precision and effectiveness of information exchange between the mobile vehicle-mounted terminal and the management center are enhanced. According to the scheme, the road traffic jam is effectively alleviated and a traffic accident can be prevented by introducing an SNMP network management protocol; and a complete MIB information base is established for the mobile vehicle-mounted terminal, so that querying and modification on the vehicle-mounted terminal can be realized conveniently.
Description
Technical field
The present invention relates to a kind of use SNMP NMP, utilize and the means such as error correction are carried out to car-mounted terminal gps data, the mobile car-mounted terminal by base station access network network is carried out to the scheme of real-time management.
Background technology
In intelligent transportation system, vehicle-carrying communication is a kind of solution of effectively and reliably management data.But along with the extensive use of vehicle-carried mobile self-organizing network, often there are some problems in vehicle-carrying communication.Due to the isomerism of node, interactivity, cooperative, the management of node data becomes a pith, and in consolidated network, accurate, effective exchange of a large amount of on-vehicle information also becomes a great difficult problem.Therefore need proposition vehicular ad hoc network network to carry out the solution of network management and supervision, introduce SNMP NMP thus.
SNMP (SimpleNetworkManagementProtocol, Simple Network Management Protocol) be a set of NMP defined by Internet tissue, based on the NMP of TCP/IP, this agreement is primarily of a few part composition such as administrative center, administration agent, management information bank and management agreement.Utilize this agreement, administrative center can the network equipment of all this agreements of support of telemanagement, as monitored managed device running status etc., thus effectively carrying out telemanagement to equipment, also can find simultaneously and solving the emergency case that may occur in network.See Fig. 1, it provides standard set management information bank and management agreement for computer network management.Inquiry (GET) operation and amendment (SET) operation etc. is used in usual agreement, realize management information bank (MIB, ManagementInformationBase) data manipulation in, in addition, also has GETNEXT and TRAP operation.By SNMP NMP, can realize car-mounted terminal real-time management, and early warning is carried out to accident.
Because the vehicle node translational speed in In-vehicle networking causes network topology change frequent soon, and mobile car-mounted terminal needs to have the little feature of volume.Be so limited, the storage capacity of mobile car-mounted terminal, computing capability and network performance are limited.Therefore, the network device management protocol used in conventional internet and method are for overload mobile car-mounted terminal equipment, performance requirement is difficult to meet and cannot effectively use, and needs the efficient management method of mobile car-mounted terminal equipment de-sign for limited ability.Will manage mobile car-mounted terminal equipment, be first how whether existing internet device management agreement can be directly used in mobile car-mounted terminal equipment and effect thereof.Use both protocols havings to have standard maturity high, extra standard development work can be avoided, easily with the advantage such as original network management system and hardware compatibility.SEHGALA etc. achieve snmp protocol and the NETCONF agreement of lightweight, and compare find snmp protocol than NETCONF, there is higher efficiency, the operation time taken and memory space are all relative less.
Summary of the invention
For above-mentioned problems of the prior art, the object of the invention is to, a kind of mobile car-mounted terminal network management for building sane In-vehicle networking is provided, by expanding the management information bank of snmp protocol, snmp protocol is applied to the network management of the mobile car-mounted terminal by base station access network network, and telemonitoring and management are carried out to car-mounted terminal node; By carrying out error correction to the gps data information in mobile car-mounted terminal, enhance accuracy and the validity of mobile car-mounted terminal and administrative center's information exchange.
In order to realize above-mentioned task, the present invention by the following technical solutions:
For building a mobile car-mounted terminal network management for sane In-vehicle networking, comprise the following steps:
Step one, is intercomed by wireless link and base station mutually by the mobile car-mounted terminal on vehicle in vehicular ad hoc network network;
Step 2, in vehicular ad hoc network network, all vehicles is all equipped with GPS locating module, and mobile car-mounted terminal obtains its exact position by GPS locating module, monitors its speed, latitude and longitude information, and these information are sent to administrative center by base station;
Step 3, is all considered as vehicle-carried mobile node by mobile car-mounted terminal all in vehicular ad hoc network network, and its authority is revised as and can carries out manual configuration, to support SNMP information;
Step 4, the attribute monitored needed for vehicle-carried mobile node sets up corresponding mobile car-mounted terminal mib information storehouse in a base station, stores information in mib information storehouse with the form of variable or object;
Step 5, writes mib information storehouse by the real time GPS information of the mobile car-mounted terminal obtained in step 2, and the upper lower threshold value of association attributes setting to mobile car-mounted terminal;
Step 6, carries out the exchange of data message between each vehicle-carried mobile node and administrative center in vehicular ad hoc network network, to be realized the management of car-mounted terminal network by administrative center.
Further, the vehicle-carried mobile information management module be connected with GPS locating module is provided with in described mobile car-mounted terminal; Be provided with mobile car-mounted terminal application program module and monitoring program module in described base station, mobile car-mounted terminal application program module and monitoring program module are all connected with mobile car-mounted terminal mib information storehouse;
Wherein: described vehicle-carried mobile information management module is for monitoring vehicle-mounted node real time information:
Mobile car-mounted terminal application program module is used for by calling different mobile car-mounted terminal application programs to collect the real time information of mobile car-mounted terminal respectively; The state information of monitoring program module mobile car-mounted terminal application program in monitored base stations.
Further, the detailed process of described step 6 comprises:
Step S60, when the on-vehicle information administration module in mobile car-mounted terminal monitors the real time information of vehicle-carried mobile node, these information are passed to the car-mounted terminal application program module in base station and monitoring program module, revise corresponding mib information with the information in mib information storehouse to revise interface by invokes application;
Step S61, when administrative center needs access mib information storehouse, administrative center will to be carried at the operation information in mib information storehouse in SNMP message and to broadcast SNMP message in the network formed in all base stations and administrative center, when the snmp management Agent on base station receives this SNMP message, judge that whether message format is complete, if complete, determine whether to process this message, if can process, then send response message to administrative center, check according to the operation information carried in the SNMP message received or set the mib information storehouse on base station; If the SNMP message received can not process, then abandon.
Further, judge in described step S61 that the whether manageable method of SNMP message received is:
Step S610, checks that the decoding of SNMP message sees whether message can be analyzed, if can not, then this message can not process, otherwise forwards next step to;
Step S611, the SNMP that the snmp management Agent of the version number checking SNMP message whether on base station can identify, if not then this message can not process, otherwise forwards next step to;
Step S612, differentiate the public domain name of SNMP message, message PDU part, source and destination transport address, if differentiate unsuccessfully, then this message can not process, otherwise forwards next step to;
Step S613, checks whether the message PDU part of SNMP message can be analyzed, if can not, then this message can not process, if can analyze, then this message can process.
Further, in described step S61, when the snmp management Agent on base station receives many SNMP messages simultaneously, will arrange these messages, process one by one; When after queue full, the message newly received will be dropped, and now snmp management Agent sends congestion messages to administrative center, and the space that in queue, any duplicate message occupies will be released, administrative center stops sending message simultaneously, resends after treating a period of time again.
Further, in described step 4, the object in mobile car-mounted terminal mib information storehouse is divided into real-time object and non real-time nature object, wherein:
Real-time object refers to those time dependent dynamic datas, for these objects, needs invokes application read by mobile car-mounted terminal or arrange the attribute information on vehicle hardware;
Non real-time nature object refers to those time-independent static datas, and for these objects, its initial value carries out assignment when system initialization, and when inquiring about this object, returns its initial value; When arranging this object, needing the correlation attribute information called on the vehicle hardware of car-mounted terminal setting, changing initial value, in order to follow-up reading simultaneously.
Further, in step 6, when administrative center occurs unusual condition to discovery vehicle, administrative center will send early warning or information to mobile car-mounted terminal.
The present invention compared with prior art, has following technical characterstic:
Feature for mobile car-mounted terminal and In-vehicle networking application extends the management information bank of snmp protocol, propose the standard scheme of a set of software and hardware solution and vehicle-carried mobile management information bank, and by revising the real time GPS information of mobile car-mounted terminal, enhance accuracy and the validity of mobile car-mounted terminal and administrative center's information exchange.In this Managed Solution, by introducing SNMP NMP, effectively alleviate road traffic blocking, prevention traffic accident, and set up a complete mib information storehouse, conveniently to inquiry and the amendment of car-mounted terminal information for mobile car-mounted terminal.
Accompanying drawing explanation
Fig. 1 is the Simple Network Management Protocol SNMP reference model mentioned in background technology;
Fig. 2 is overall flow figure of the present invention;
Fig. 3 is the hierarchical chart in the present invention;
Fig. 4 is SNMP message format;
Fig. 5 is the mib structure of car-mounted terminal.
Embodiment
Defer to technique scheme, as shown in Figure 2, a kind of mobile car-mounted terminal network management for building sane In-vehicle networking, comprises the following steps:
Step one, is intercomed by wireless link and base station mutually by the mobile car-mounted terminal on vehicle in vehicular ad hoc network network; Here refer to the vehicle in all vehicular ad hoc network networks, the vehicle mobile terminals of these vehicles is all installed radio receiving transmitting module, by receiving and sending messages between wireless link and base station, communication protocol adopts ICP/IP protocol, can by its accessing Internet by base station.
Step 2, in vehicular ad hoc network network, all vehicles are all equipped with GPS locating module, mobile car-mounted terminal obtains its exact position by GPS locating module, monitors its speed, vehicle course, latitude and longitude information, and these information are sent to administrative center by base station; Administrative center analyzes validity and the integrality of data, based on the real time information monitored, analyzes all vehicles that same section is run, and sends early warning or information to the dangerous situation that may occur or road congestion to corresponding vehicle;
When receiving the place of more than 3 gps satellite signals, realize the location to mobile car-mounted terminal by gps satellite; When realizing locating mobile car-mounted terminal by GPS in satellite-signal blind area, obtain its velocity information by the transducer (acceleration transducer and gyroscope) in mobile car-mounted terminal and obtain its latitude and longitude information by architecture.
For the real-time GPS data monitored, its integrality refers to that each gps data should comprise the positional information, directional information, the velocity information that gather point, and is attached with car-mounted terminal identification number, and other car status information.Its validity refers to and checks that whether data are effective item by item, and as checked, whether gps data meets place geographic range, and whether acquisition time is effective, and whether error exceedes the worst error etc. that GPS is demarcated.
When obtaining mobile car-mounted terminal real time GPS information, error may be produced in data generation, transmission, processing procedure.Now when the GPS information that administrative center analyzes the mobile car-mounted terminal monitored is effective, then error correction is carried out to GPS information, during as produced location rough error, DOP (geometric dilution of precision) value, the pie slice factor and the acceleration filtering factor that can export according to GPS receiver are detected and are rejected; When for GPS general measure error, location technology etc. of checking the mark is adopted to carry out error correction.
Step 3, is all considered as vehicle-carried mobile node by mobile car-mounted terminal all in vehicular ad hoc network network, strengthens vehicle-carrying communication, and its authority is revised as and can carries out manual configuration, to support SNMP information;
Step 4, chooses the required attribute of supervision of vehicle-carried mobile node and the actual performance index of base station system sets up corresponding mobile car-mounted terminal mib information storehouse in a base station, stores information in mib information storehouse with the form of variable or object;
Specifically, mobile car-mounted terminal mib information storehouse method for building up comprises:
Step S40, carries out detailed regulatory requirement analysis to system;
Step S41, lists the management object in mib information storehouse;
Step S42, divides into groups object information;
Step S43, sets up mib information storehouse.
In the present embodiment, the object in mobile car-mounted terminal mib information storehouse is divided into real-time object and non real-time nature object, wherein:
Real-time object refers to those time dependent dynamic datas, as the GPS information etc. of node dump energy, buffer memory; For these objects, invokes application is needed to be read by mobile car-mounted terminal or the attribute information on vehicle hardware is set;
Non real-time nature object refers to those time-independent static datas, as node identification number etc.; For these objects, its initial value carries out assignment when system initialization, and when inquiring about this object, returns its initial value; When arranging this object, needing the correlation attribute information called on the vehicle hardware of car-mounted terminal setting, changing initial value, in order to follow-up reading simultaneously.
There is in mobile car-mounted terminal many configurable attributes, from the attribute information wherein chosen this programme and will monitor, such as:
As shown in Figure 5, for a kind of according to the actual demand of mobile car-mounted terminal, the attribute information that mobile terminal is monitored is classified as follows:
1. car-mounted terminal nodal information group: the GPS information (vehicle course, longitude and latitude, speed), memory space etc. of identification number, electricity, operating voltage, working temperature, buffer memory.
2. car-mounted terminal module group: main control module operating state, communication module etc.Wherein:
Main control module work state information: operating voltage, master control circulation, command status, operating state etc.;
Communication module work state information: operating voltage, communication type, traffic rate, transmission radius, transmitting-receiving byte number, reiving/transmitting state etc.;
Data Analysis Services module work state information: operating voltage, transceiving data amount, reiving/transmitting state, operating state (modulation/demodulation state, coding/decoding state, analysis transport condition).
Step 5, the real time GPS information of the mobile car-mounted terminal obtained in step 2 is write mib information storehouse, and the upper lower threshold value of association attributes setting to mobile car-mounted terminal, as the threshold value of the working temperature of node, the electricity of node etc., when exceeding threshold value, illustrate that unusual condition appears in vehicle.
Step 6, carries out the exchange of data message between each vehicle-carried mobile node and administrative center in vehicular ad hoc network network, to realize the management of car-mounted terminal network.
Concrete, administrative center's information of carrying in the snmp management Agent in mobile car-mounted terminal MIB storehouse and mobile car-mounted terminal switching network, snmp management Agent is operated in the base station be connected with mobile car-mounted terminal.Administrative center and mobile car-mounted terminal all have receive, the unit for the treatment of S NMP message.Fig. 4 is the form of SNMP message.
As shown in Figure 3, the vehicle-carried mobile information management module be connected with GPS locating module is provided with in mobile car-mounted terminal; Be provided with mobile car-mounted terminal application program module and monitoring program module in described base station, mobile car-mounted terminal application program module and monitoring program module are all connected with mobile car-mounted terminal mib information storehouse;
Wherein: described vehicle-carried mobile information management module is for monitoring vehicle-mounted node real time information, the operating state of a certain object properties monitored when vehicle-carried mobile information management module exceedes the threshold value of setting, or there is unexpected phenomenon, snmp management Agent sends a Trap warning information to administrative center, administrative center, according to the object attribute values in Trap bag, obtains corresponding fortuitous event, carries out corresponding early warning to vehicle, as hypervelocity, early warning at a slow speed, accident early warning etc.
Mobile car-mounted terminal application program module is used for by calling different mobile car-mounted terminal application programs to collect the real time information of mobile car-mounted terminal respectively; The state information of monitoring program module mobile car-mounted terminal application program in monitored base stations.
The detailed process of this step comprises:
Step S60, when the on-vehicle information administration module in mobile car-mounted terminal monitors the real time information of vehicle-carried mobile node, these information are passed to the car-mounted terminal application program module in base station and monitoring program module, revise corresponding mib information with the information in mib information storehouse to revise interface by invokes application;
Step S61, when administrative center needs access mib information storehouse, the operation informations such as GET or SET to mib information storehouse are carried in the network (the Internet) formed in SNMP message and in all base stations and administrative center and broadcast SNMP message by administrative center, when the snmp management Agent on base station receives this SNMP message, judge that whether message format is complete, if complete, determine whether to process this message, if can process, then send response message to administrative center, check according to the operation information carried in the SNMP message received or set the mib information storehouse on base station, if the SNMP message received can not process, then abandon.
Judge in described step S61 that the whether manageable method of SNMP message received is:
Step S610, checks that the decoding of SNMP message sees whether message can be analyzed, if can not, then this message can not process, otherwise forwards next step to;
Step S611, the SNMP that the snmp management Agent of the version number checking SNMP message whether on base station can identify, if not then this message can not process, otherwise forwards next step to;
Step S612, discriminating service is carried out in the public domain name of SNMP message, message PDU part, source and destination transport address, if differentiate unsuccessfully, then this message can not process, otherwise forwards next step to;
Step S613, checks whether the message PDU part of SNMP message can be analyzed, if can not, then this message can not process, if can analyze, then this message can process.
It should be noted that, visit the object in common field here by public domain name.Differentiate service technology here refer to allow the source of SNMP proxy authentication snmp message and its whether be modified, judge whether to respond administrative center with this.
It should be noted that, above-mentioned GET operation refers to that administrative center obtains specific object properties information from mib information storehouse.SET operation refers to, for " reading-write " object in mib information storehouse, administrative center can invokes application, the attribute information of amendment special object.In addition, GET-NEXT operation refers to by traversal MIB tree acquisition object.TRAP representative sends with it and unsolicitedly informs administrative center, carries out early warning.
It should be noted that when the snmp management Agent on base station receives many SNMP messages simultaneously, will arrange these messages, and process one by one; When after queue full, the message newly received will be dropped, and now snmp management Agent sends congestion messages to administrative center, and the space that in queue, any duplicate message occupies will be released, administrative center stops sending message simultaneously, resends after treating a period of time again.
When administrative center occurs unusual condition to discovery vehicle, then think and there occurs alarm event, now administrative center will send early warning or information to mobile car-mounted terminal; These unusual conditions include but not limited to:
1. the working temperature of certain mobile car-mounted terminal node exceedes the maximum of setting;
2. the operating voltage of certain mobile car-mounted terminal node is not in the scope preset;
3. the residue node electricity of certain mobile car-mounted terminal node is lower than the minimum value set;
4. the memory space of certain mobile car-mounted terminal node is full;
5. there is endless loop or restart phenomenon in master control circulation;
6. certain mobile car-mounted terminal node travels to dangerous or blocking section;
7. obtain its speed limit do not specified by highway according to the real-time signal analysis of certain the mobile car-mounted terminal node monitored to travel;
8. obtain it according to the real-time signal analysis of certain the mobile car-mounted terminal node monitored to stop in non-parking area;
9. obtain its long-time continuous according to the real-time signal analysis of certain the mobile car-mounted terminal node monitored to travel;
10. the hypotelorism of two car-mounted terminal node is obtained according to the real-time signal analysis of the mobile car-mounted terminal node monitored;
11. obtain it according to the real-time signal analysis of certain the mobile car-mounted terminal node monitored drives in the wrong direction, turns around.
Hardware bearing structure in this programme on vehicle can have two kinds:
The first: using the main control unit in mobile car-mounted terminal as on-vehicle information administration module, can reduce costs like this.But when main control unit occurs that fortuitous event cannot normally work, the accurate monitor message of mobile mobile car-mounted terminal cannot be obtained;
The second: adopt independently vehicle-carried mobile information management module, with independently battery and power supply carry out dual power supply.Obtained most of attribute information of vehicle-carried mobile node by independently supervisory circuit, the attribute information of residue node is obtained jointly by on-vehicle information administration module and main control unit.On-vehicle information administration module is connected with base station by wireless link, eventually through base station access network network.
The software implementing course of the program is: the application program on base station comprises the mobile car-mounted terminal application program in mobile car-mounted terminal application program module, monitoring program two parts in monitoring program module, collects the state information of mobile car-mounted terminal application program on the real time information of mobile car-mounted terminal and base station by calling related application respectively.For the second in above-mentioned hardware implementations, collect the state information of mobile car-mounted terminal application program on the real time information of mobile car-mounted terminal and base station mainly through monitoring program, call MIB according to the information of collecting and revise corresponding object information in interface amendment MIB storehouse.
It should be noted that, the mobile car-mounted terminal application program on base station and mobile car-mounted terminal carry out the communication protocol of management information exchange:
1. base station is to the query statement of mobile car-mounted terminal: " SNMP "+(object identity)
2. mobile car-mounted terminal is corresponding to the inquiry of base station: " SNMP "+" OID " mib information.
Claims (7)
1., for building a mobile car-mounted terminal network management for sane In-vehicle networking, it is characterized in that, comprise the following steps:
Step one, is intercomed by wireless link and base station mutually by the mobile car-mounted terminal on vehicle in vehicular ad hoc network network;
Step 2, in vehicular ad hoc network network, all vehicles is all equipped with GPS locating module, and mobile car-mounted terminal obtains its exact position by GPS locating module, monitors its speed, latitude and longitude information, and these information are sent to administrative center by base station;
Step 3, is all considered as vehicle-carried mobile node by mobile car-mounted terminal all in vehicular ad hoc network network, and its authority is revised as and can carries out manual configuration, to support SNMP information;
Step 4, the attribute monitored needed for vehicle-carried mobile node sets up corresponding mobile car-mounted terminal mib information storehouse in a base station, stores information in mib information storehouse with the form of variable or object;
Step 5, writes mib information storehouse by the real time GPS information of the mobile car-mounted terminal obtained in step 2, and the upper lower threshold value of association attributes setting to mobile car-mounted terminal;
Step 6, carries out the exchange of data message between each vehicle-carried mobile node and administrative center in vehicular ad hoc network network, to be realized the management of car-mounted terminal network by administrative center.
2. as claimed in claim 1 for building the mobile car-mounted terminal network management of sane In-vehicle networking, it is characterized in that, in described mobile car-mounted terminal, be provided with the vehicle-carried mobile information management module be connected with GPS locating module; Be provided with mobile car-mounted terminal application program module and monitoring program module in described base station, mobile car-mounted terminal application program module and monitoring program module are all connected with mobile car-mounted terminal mib information storehouse;
Wherein: described vehicle-carried mobile information management module is for monitoring vehicle-mounted node real time information:
Mobile car-mounted terminal application program module is used for by calling different mobile car-mounted terminal application programs to collect the real time information of mobile car-mounted terminal respectively; The state information of monitoring program module mobile car-mounted terminal application program in monitored base stations.
3. as claimed in claim 1 for building the mobile car-mounted terminal network management of sane In-vehicle networking, it is characterized in that, the detailed process of described step 6 comprises:
Step S60, when the on-vehicle information administration module in mobile car-mounted terminal monitors the real time information of vehicle-carried mobile node, these information are passed to the car-mounted terminal application program module in base station and monitoring program module, revise corresponding mib information with the information in mib information storehouse to revise interface by invokes application;
Step S61, when administrative center needs access mib information storehouse, administrative center will to be carried at the operation information in mib information storehouse in SNMP message and to broadcast SNMP message in the network formed in all base stations and administrative center, when the snmp management Agent on base station receives this SNMP message, judge that whether message format is complete, if complete, determine whether to process this message, if can process, then send response message to administrative center, check according to the operation information carried in the SNMP message received or set the mib information storehouse on base station; If the SNMP message received can not process, then abandon.
4. as claimed in claim 3 for building the mobile car-mounted terminal network management of sane In-vehicle networking, it is characterized in that, in described step S61, judge that the whether manageable method of SNMP message received is:
Step S610, checks that the decoding of SNMP message sees whether message can be analyzed, if can not, then this message can not process, otherwise forwards next step to;
Step S611, the SNMP that the snmp management Agent of the version number checking SNMP message whether on base station can identify, if not then this message can not process, otherwise forwards next step to;
Step S612, differentiate the public domain name of SNMP message, message PDU part, source and destination transport address, if differentiate unsuccessfully, then this message can not process, otherwise forwards next step to;
Step S613, checks whether the message PDU part of SNMP message can be analyzed, if can not, then this message can not process, if can analyze, then this message can process.
5. as claimed in claim 3 for building the mobile car-mounted terminal network management of sane In-vehicle networking, it is characterized in that, in described step S61, when the snmp management Agent on base station receives many SNMP messages simultaneously, to arrange these messages, process one by one; When after queue full, the message newly received will be dropped, and now snmp management Agent sends congestion messages to administrative center, and the space that in queue, any duplicate message occupies will be released, administrative center stops sending message simultaneously, resends after treating a period of time again.
It is 6. as claimed in claim 1 that for building the mobile car-mounted terminal network management of sane In-vehicle networking, it is characterized in that, in described step 4, the object in mobile car-mounted terminal mib information storehouse is divided into real-time object and non real-time nature object, wherein:
Real-time object refers to those time dependent dynamic datas, for these objects, needs invokes application read by mobile car-mounted terminal or arrange the attribute information on vehicle hardware;
Non real-time nature object refers to those time-independent static datas, and for these objects, its initial value carries out assignment when system initialization, and when inquiring about this object, returns its initial value; When arranging this object, needing the correlation attribute information called on the vehicle hardware of car-mounted terminal setting, changing initial value, in order to follow-up reading simultaneously.
7. as claimed in claim 1 for building the mobile car-mounted terminal network management of sane In-vehicle networking, it is characterized in that, in step 6, when administrative center occurs unusual condition to discovery vehicle, administrative center will send early warning or information to mobile car-mounted terminal.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053639A (en) * | 2017-11-30 | 2018-05-18 | 重庆元铂智能科技有限公司 | A kind of car-mounted terminal location determination system and method |
| CN109979027A (en) * | 2019-02-20 | 2019-07-05 | 钛马信息网络技术有限公司 | A kind of processing method of vehicle status data, device, equipment and medium |
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| CN1481631A (en) * | 2000-10-13 | 2004-03-10 | ����˹�����ң��ϵͳ��˾ | Automotive telemetry protocol |
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| CN1481631A (en) * | 2000-10-13 | 2004-03-10 | ����˹�����ң��ϵͳ��˾ | Automotive telemetry protocol |
| US20090016262A1 (en) * | 2007-07-12 | 2009-01-15 | Lockheed Martin Corporation | Technique for Low-Overhead Network State Dissemination for Management of Mobile Ad-Hoc Networks |
| CN102571436A (en) * | 2012-01-12 | 2012-07-11 | 国电南瑞科技股份有限公司 | Comprehensive monitoring device for SNMP (Simple Network Management Protocol) and management method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108053639A (en) * | 2017-11-30 | 2018-05-18 | 重庆元铂智能科技有限公司 | A kind of car-mounted terminal location determination system and method |
| CN109979027A (en) * | 2019-02-20 | 2019-07-05 | 钛马信息网络技术有限公司 | A kind of processing method of vehicle status data, device, equipment and medium |
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| Publication number | Publication date |
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| CN105391781B (en) | 2018-06-29 |
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