CN103561131A - Vehicle-mounted equipment real-time addressing method and system based on Ethernet - Google Patents
Vehicle-mounted equipment real-time addressing method and system based on Ethernet Download PDFInfo
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- CN103561131A CN103561131A CN201310556344.6A CN201310556344A CN103561131A CN 103561131 A CN103561131 A CN 103561131A CN 201310556344 A CN201310556344 A CN 201310556344A CN 103561131 A CN103561131 A CN 103561131A
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Abstract
The embodiment of the invention discloses a vehicle-mounted equipment real-time addressing method and system based on the Ethernet. The vehicle-mounted equipment real-time addressing method comprises the steps that an addressing server receives a registered URI domain name of terminal equipment in a group, and the URI domain name of the terminal equipment and the IP address of the terminal equipment generate mapping information; the addressing server sends the mapping information to other addressing servers, and receives and stores the respective mapping information sent by the other addressing servers; the addressing server sends the stored information of all the terminal equipment to all the terminal equipment in the group, so that all the terminal equipment in the group stores the mapping information, and when the terminal equipment needs to communicate with target equipment, the corresponding IP address is sought by searching the URI domain name of the target equipment in the stored mapping information. The vehicle-mounted equipment real-time addressing method and system based on the Ethernet can improve the real-time performance and determinacy of vehicle communication networks and safety of train operation.
Description
Technical field
The present invention relates to field of track traffic, particularly relate to a kind of mobile unit real-time addressing method and system based on Ethernet.
Background technology
Train network control system based on Ethernet is when communication process, source equipment need to be known the address information of destination equipment, the open system interconnection (OSI) of Ethernet is with reference to (Open System Interconnect Reference Model, OSI) in seven layer model, network layer Adoption Network agreement (Internet Protocol, IP) address is as the address information of communication.Existing addressing method is specifically: first source equipment send domain name mapping request to name server (Domain Name Server, DNS) domain name, after DNS receives analysis request, can first inquire about local data base, if local data base is this domain name not, can continue inquiry toward upper other the set dns servers of this DNS, inquiry until obtain the corresponding relation of inquired about domain name and IP address, finally feeds back to analysis result source equipment successively.After source equipment obtains IP address that destination equipment is corresponding, start to communicate.Specifically in TCN, source equipment is by input universal resource identifier (Uniform Resource Identifier, URI) domain name is carried out destination device access, and dns server need to become this domain name mapping IP address just can carry out the communication of network layer.
As can be seen here: in existing addressing system, due to the domain name of inquiry destination equipment and required time of IP address corresponding relation uncertain, cause the response time also uncertain, this will have influence on the real-time of train network and the fail safe of train operation.
Based on above-mentioned technical problem, at present in the urgent need to a kind of novel addressing system is provided, to reduce the uncertainty of addressing time used, reduce communication delay, improve the real-time of train communication and the fail safe of train operation.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of mobile unit real-time addressing method and system based on Ethernet, when terminal equipment need to be communicated by letter with target device, without carrying out network interaction with addressing server end, resolve domain name, can in the short time, obtain IP address corresponding to target device domain name at the utmost point, increase the real-time of network and the fail safe of certainty and train operation.
The invention discloses following technical scheme:
A mobile unit real-time addressing method for Ethernet, comprising:
Addressing server receives the URI domain name of the terminal equipment registration in marshalling, and terminal equipment URI domain name and terminal device IP address are generated to map information;
Described addressing server sends described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system;
Described addressing server is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage, so that all terminal equipments in described marshalling store described map information, when terminal equipment need to be communicated by letter with target device, in described map information, search for the IP address corresponding to URI domain name lookup of target device.
Preferably, adopt traversal search algorithm to search for.
The present invention also provides a kind of mobile unit real-time addressing system based on Ethernet, comprising:
Terminal equipment and addressing server;
Described terminal equipment, URI domain name for from the addressing server registration self to affiliated marshalling, the map information of all terminal equipments that under receiving, the addressing server of marshalling sends also stores, when needs are communicated by letter with target device, in described map information, search for the IP address corresponding to URI domain name lookup of target device;
Described addressing server, for receiving the URI domain name of the terminal equipment registration in marshalling, terminal equipment URI domain name and terminal device IP address are generated to map information, send described map information to other addressing servers, receive map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage.
Preferably, described terminal equipment, comprising:
Transmitting element, for the URI domain name of the addressing server registration to affiliated marshalling self;
Receiving element, the map information of all terminal equipments that send for the addressing server of organizing into groups under receiving also stores;
Search unit, for when this terminal equipment need to be communicated by letter with target device, in described map information, search for the IP address corresponding to URI domain name lookup of target device.
Preferably, described addressing server, comprising:
Receiving element, for receiving the URI domain name of the terminal equipment registration in marshalling, generates map information by terminal equipment URI domain name and terminal device IP address;
Interactive unit, for sending described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system;
Transmitting element, is sent to all terminal equipments in the marshalling of this addressing server by the map information of all terminal equipments of described storage.
Preferably, described terminal equipment is vehicle-mounted terminal equipment.
Preferably, described addressing server is name server.
Preferably, described terminal equipment adopts traversal search algorithm to search for.
Visible: a kind of mobile unit real-time addressing method and system based on Ethernet provided by the invention, the URI domain name that receives the terminal equipment registration in marshalling by each addressing server in system, generates map information by terminal equipment URI domain name and terminal device IP address; Described addressing server sends described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system; Described addressing server is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage, so that all terminal equipments in described marshalling store described map information, when terminal equipment need to be communicated by letter with target device, in the described map information of described storage, search for the IP address corresponding to URI domain name lookup of target device.Each addressing server is the map information of mutual each self-generating each other, and the map information of all terminals that obtain is sent to the terminal equipment in marshalling separately.Exactly because each terminal equipment receives and preserves the map information of all terminal equipments in system, so, when terminal equipment is wanted to communicate by letter with target terminal, only need to be from the IP address of local internal memory query aim terminal of self.Thereby, avoid terminal equipment and addressing server end to carry out network interaction and resolved domain name, can at the utmost point, in the short time, obtain needing the IP address corresponding to destination domain name of communication, improved the real-time of network and the fail safe of certainty and train operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of a kind of mobile unit real-time addressing embodiment of the method 1 based on Ethernet of embodiment of the present invention announcement;
Fig. 2 is the structure URI of embodiment of the present invention announcement and the schematic diagram of IP address mapping database;
Fig. 3 is the structure chart of a kind of mobile unit real-time addressing system embodiment 1 based on Ethernet of embodiment of the present invention announcement.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
The method and system that provide in the present invention can be used in the polytype train that adopts train network system, such as at present conventional locomotive, motor-car, subway etc.
Embodiment mono-
Refer to Fig. 1, its Fig. 1 is the flow chart of a kind of mobile unit real-time addressing embodiment of the method 1 based on Ethernet of embodiment of the present invention announcement, and the method comprises:
Step 101, addressing server receives the URI domain name of the terminal equipment registration in marshalling, and terminal equipment URI domain name and terminal device IP address are generated to map information.
Train consists of a marshalling or a plurality of marshalling is connected to form, terminal equipment under each marshalling belongs to an addressing server, terminal equipment under same marshalling is the addressing server in affiliated marshalling by the URI domain name registration of oneself, and the addressing server of affiliated marshalling is all stored in local data base belonging to the URI of all terminals of oneself and the map information between IP address.
Step 102, described addressing server sends described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system.
In TCN, train has a plurality of marshallings, the corresponding addressing server of each marshalling, each addressing server sends to other addressing servers in system by the URI and the map information between IP address that belong to all terminals of oneself, meanwhile, also each addressing server receives the map information self storing that other addressing services send.
Such as: the marshalling of a train has two, under each marshalling, there are four terminal equipments, specifically as shown in the schematic diagram that Fig. 2 builds URI and IP address mapping database, terminal equipment C1, terminal equipment C2, terminal equipment C3, tetra-terminal equipments of terminal equipment C4 belong to marshalling addressing server 1, and terminal equipment C5, terminal equipment C6, terminal equipment C7, tetra-terminal equipments of terminal equipment C8 belong to marshalling addressing server 2.
After the processing of step 101, addressing server 1 has generated all terminal equipment URI domain names and IP address map information in this marshalling; Addressing server 2 has also generated all terminal equipment URI domain names and IP address map information in this marshalling; Map information is stored in respectively in the database of addressing server.Under this scene, step 102 is specially: addressing server 1 and addressing server 2 be the mutual map information storing each other mutually, finally make addressing server 1 obtain the map information of all terminal equipments of ownership addressing server 2, addressing server 2 has obtained the map information of all terminal equipments of ownership addressing server 1.That is to say, in each addressing server, store URI and the IP address map information of all terminal equipments of this train.
Certain above-mentioned Fig. 2 is exemplary illustration, and in practical application, a train has a plurality of addressing servers, and a plurality of terminal equipments, do not limit concrete number at this.As long as according to step 102 operational processes, make the addressing server of each marshalling obtain URI and the IP address map information of all terminal equipments in system.
Step 103, described addressing server is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage, so that all terminal equipments in described marshalling store described map information, when terminal equipment need to be communicated by letter with target device, in the described map information of described storage, search for the IP address corresponding to URI domain name lookup of target device.
The scene shown in Fig. 2 of take is carried out specific explanations explanation to step 103 as example: marshalling addressing server 1 is by the URI of all terminal equipments in the system obtaining and IP address map information, send to ownership his terminal equipment C1, terminal equipment C2, these four terminal equipments of terminal equipment C3, terminal equipment C4, meanwhile, addressing server 2, by the URI of all terminal equipments in the system obtaining and IP address map information, sends to ownership his terminal equipment C5, terminal equipment C6, these four terminal equipments of terminal equipment C7, terminal equipment C8; And terminal equipment C1, terminal equipment C2, terminal equipment C3, terminal equipment C4, terminal equipment C5, terminal equipment C6, terminal equipment C7, terminal equipment C8, be stored in the map information receiving in local internal memory respectively.That is to say, in the internal memory of each terminal equipment in this train, storing respectively URI and the IP address map information of all terminal equipments in this train.
When any one terminal equipment is wanted to communicate by letter with target terminal, only need to from the described map information storing described in local internal memory, search for the IP address corresponding to URI domain name lookup of target device like this.Such as: when terminal equipment C1 need to communicate with terminal equipment C8, only need in the local internal memory of terminal equipment C1, the URI domain name of search terminal equipment C8 obtain corresponding IP address.Because storing the URI domain name of all devices and corresponding IP address map information in the local internal memory of terminal equipment C1.
Addressing server can be DNS name server in embodiments of the present invention, is mainly used in domain name to be converted to the IP address of main frame, is storing domain name and the map information of corresponding IP address with it in DNS name server.
IEC61375-2-3 international standard provides a kind of new domain name system to consist of following 4 parts: trnLabel: train label, cstLabel: the marshalling label under train, carLabel: compartment label and devLabel under marshalling: device label in compartment, these four labels can be specifically with numeral and underscore " _ " or letter representation.According to the domain name structure of International Standard, patent of the present invention builds the tree form data structure of a train all devices domain name system in local internal memory, adopts traversal search algorithm to search for, and search time is considerably less, has improved the real-time of communication.
By above-described embodiment one, can be found out, a kind of mobile unit real-time addressing method based on Ethernet provided by the invention, the URI domain name that receives the terminal equipment registration in marshalling by addressing server, generates map information by terminal equipment URI domain name and terminal device IP address; Described addressing server sends described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system; Described addressing server is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage, so that all terminal equipments in described marshalling store described map information, when terminal equipment need to be communicated by letter with target device, in the described map information of described storage, search for the IP address corresponding to URI domain name lookup of target device.Each addressing server is the map information of mutual each self-generating each other, and the map information of all terminals that obtain is sent to the terminal equipment in marshalling separately.Exactly because each terminal equipment receives and preserves the map information of all terminal equipments in system, so, when terminal equipment is wanted to communicate by letter with target terminal, only need to be from the IP address of local internal memory query aim terminal of self.Thereby, avoid terminal equipment and addressing server end to carry out network interaction and resolved domain name, can at the utmost point, in the short time, obtain needing the IP address corresponding to destination domain name of communication, improved the real-time of network and the fail safe of certainty and train operation.
Embodiment bis-
Also provide a kind of mobile unit real-time addressing system based on Ethernet with the corresponding embodiment of the present invention of method in embodiment mono-, specifically refer to Fig. 3, it is the schematic diagram of a kind of mobile unit real-time addressing system embodiment based on Ethernet of the present invention's announcement, this system comprises a plurality of terminals and a plurality of addressing server, each termination function is consistent, the function of each addressing server is consistent, specific as follows:
Terminal equipment and addressing server;
Described terminal equipment, URI domain name for from the addressing server registration self to affiliated marshalling, the map information of all terminal equipments that under receiving, the addressing server of marshalling sends also stores, when needs are communicated by letter with target device, in the described map information of described storage, search for the IP address corresponding to URI domain name lookup of target device;
Described addressing server, for receiving the URI domain name of the terminal equipment registration in marshalling, terminal equipment URI domain name and terminal device IP address are generated to map information, send described map information to other addressing servers, receive map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage.
As shown in Figure 3, each terminal equipment belongs to an addressing server, all to the URI domain name of the marshalling server registration self under own.Addressing server generates map information by the terminal equipment URI domain name and the terminal device IP address that belong to oneself, and then send described map information to other addressing servers, also receive the map information separately of other addressing servers transmissions and store these map informations simultaneously, in each addressing server, stored like this URI domain name of all terminal equipments and the map information of IP address in system, by these map informations being sent to the terminal equipment that belongs to oneself, so that each terminal equipment receives all map informations and stores.So when terminal equipment need to be with object terminal communication, just can communicate as long as search the corresponding IP of object terminal address in local internal memory.
Preferably, described terminal equipment, comprising:
Transmitting element, for the URI domain name of the addressing server registration to affiliated marshalling self;
Receiving element, the map information of all terminal equipments that send for the addressing server of organizing into groups under receiving also stores;
Search unit, for when this terminal equipment need to be communicated by letter with target device, in the described map information of described storage, search for the IP address corresponding to URI domain name lookup of target device.
Preferably, described addressing server, comprising:
Receiving element, for receiving the URI domain name of the terminal equipment registration in marshalling, generates map information by terminal equipment URI domain name and terminal device IP address;
Interactive unit, for sending described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system;
Transmitting element, is sent to all terminal equipments in the marshalling of this addressing server by the map information of all terminal equipments of described storage.
Preferably, described terminal equipment is vehicle-mounted terminal equipment.
Preferably, described addressing server is name server.
Preferably, described terminal equipment adopts traversal search algorithm to search for.
By above-described embodiment two, can be found out, a kind of mobile unit real-time addressing system based on Ethernet provided by the invention, the URI domain name that receives the terminal equipment registration in marshalling by each addressing server, generates map information by terminal equipment URI domain name and terminal device IP address; Described addressing server sends described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system; Described addressing server is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage, so that all terminal equipments in described marshalling store described map information, when terminal equipment need to be communicated by letter with target device, in the described map information of described storage, search for the IP address corresponding to URI domain name lookup of target device.Each addressing server is the map information of mutual each self-generating each other, and the map information of all terminals that obtain is sent to the terminal equipment in marshalling separately.Exactly because each terminal equipment receives and preserves the map information of all terminal equipments in system, so, when terminal equipment is wanted to communicate by letter with target terminal, only need to be from the IP address of local internal memory query aim terminal of self.Thereby, avoid terminal equipment and addressing server end to carry out network interaction and resolved domain name, can at the utmost point, in the short time, obtain needing the IP address corresponding to destination domain name of communication, improved the real-time of network and the fail safe of certainty and train operation.
It should be noted that, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space in this article, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
It should be noted that, one of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above a kind of mobile unit real-time addressing method and system based on Ethernet provided by the present invention is described in detail, applied specific embodiment herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (8)
1. the mobile unit real-time addressing method based on Ethernet, is characterized in that, comprising:
Addressing server receives the URI domain name of the terminal equipment registration in marshalling, and terminal equipment URI domain name and terminal device IP address are generated to map information;
Described addressing server sends described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system;
Described addressing server is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage, so that all terminal equipments in described marshalling store described map information, when terminal equipment need to be communicated by letter with target device, in described map information, search for the IP address corresponding to URI domain name lookup of target device.
2. method according to claim 1, is characterized in that, adopts traversal search algorithm to search for.
3. the mobile unit real-time addressing system based on Ethernet, is characterized in that, comprising:
Terminal equipment and addressing server;
Described terminal equipment, URI domain name for from the addressing server registration self to affiliated marshalling, the map information of all terminal equipments that under receiving, the addressing server of marshalling sends also stores, when needs are communicated by letter with target device, in described map information, search for the IP address corresponding to URI domain name lookup of target device;
Described addressing server, for receiving the URI domain name of the terminal equipment registration in marshalling, terminal equipment URI domain name and terminal device IP address are generated to map information, send described map information to other addressing servers, receive map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system is sent to all terminal equipments in this marshalling by the map information of all terminal equipments of described storage.
4. system according to claim 3, is characterized in that, described terminal equipment, comprising:
Transmitting element, for the URI domain name of the addressing server registration to affiliated marshalling self;
Receiving element, the map information of all terminal equipments that send for the addressing server of organizing into groups under receiving also stores;
Search unit, for when this terminal equipment need to be communicated by letter with target device, in described map information, search for the IP address corresponding to URI domain name lookup of target device.
5. system according to claim 3, is characterized in that, described addressing server, comprising:
Receiving element, for receiving the URI domain name of the terminal equipment registration in marshalling, generates map information by terminal equipment URI domain name and terminal device IP address;
Interactive unit, for sending described map information to other addressing servers, receives map information separately storage that other addressing servers send, so that the map information of all terminal equipments of addressing server stores in system;
Transmitting element, is sent to all terminal equipments in the marshalling of this addressing server by the map information of all terminal equipments of described storage.
6. system according to claim 3, is characterized in that, described terminal equipment is vehicle-mounted terminal equipment.
7. system according to claim 3, is characterized in that, described addressing server is name server.
8. system according to claim 3, is characterized in that, described terminal equipment adopts traversal search algorithm to search for.
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| CN201310556344.6A CN103561131B (en) | 2013-11-11 | 2013-11-11 | Vehicle-mounted equipment real-time addressing method and system based on Ethernet |
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| CN201310556344.6A CN103561131B (en) | 2013-11-11 | 2013-11-11 | Vehicle-mounted equipment real-time addressing method and system based on Ethernet |
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| CN107566233A (en) * | 2017-09-30 | 2018-01-09 | 广东美的制冷设备有限公司 | The resource share method and device of home appliance |
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| CN108881510A (en) * | 2018-06-11 | 2018-11-23 | 天津卓越信通科技有限公司 | A kind of homogeneous network domain name management method |
| CN113362196A (en) * | 2021-05-31 | 2021-09-07 | 广东电网有限责任公司 | Low-delay addressing method for pre-dispatching service of power grid monitoring system |
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| CN113362196B (en) * | 2021-05-31 | 2023-02-21 | 广东电网有限责任公司 | Low-delay addressing method for pre-dispatching service of power grid monitoring system |
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| CN103561131B (en) | 2014-11-19 |
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