CN108494595B

CN108494595B - High-efficiency new-generation big data network implementation method

Info

Publication number: CN108494595B
Application number: CN201810235148.1A
Authority: CN
Inventors: 王晓喃
Original assignee: Changshu Institute of Technology
Current assignee: Daoji Intelligence Anhui Information Technology Co ltd
Priority date: 2018-03-21
Filing date: 2018-03-21
Publication date: 2021-03-26
Anticipated expiration: 2038-03-21
Also published as: CN108494595A

Abstract

The invention provides an efficient new generation big data network implementation method, the network includes a backbone network, a data network and a mobile network; the backbone network includes more than two core routers, and the data network includes proxy routers, data routers and access The mobile network includes a mobile router and more than two mobile devices; each node in the big data network can quickly acquire data through the network implementation method provided by the present invention, thereby greatly improving service performance. The invention can be applied to many fields such as traffic road condition inspection and control and agricultural engineering, and has wide application prospects.

Description

High-efficiency new-generation big data network implementation method

Technical Field

The invention relates to an implementation method, in particular to an efficient new generation big data network implementation method.

Background

The communication between nodes in the big data network is realized by forwarding and routing of intermediate nodes, so one of the key technologies to be solved for realizing the big data network is to reduce data transmission delay so as to enable users to quickly acquire network services. With the development of network technology, big data networks will become a mode for providing services in the future.

At present, the implementation mode of the big data network is realized through broadcasting, so that both delay and cost are large, and the network service performance is reduced. Therefore, how to reduce the delay and cost of providing services by a big data network becomes a hot issue of research in recent years.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to solve the technical problem of providing an efficient new generation big data network implementation method aiming at the defects of the prior art.

The technical scheme is as follows: the invention discloses a method for realizing a new generation of high-efficiency big data network, wherein the network comprises a backbone network, a data network and a mobile network; the backbone network comprises more than two core routers, the data network comprises a proxy router, a data router and an access node, and the mobile network comprises one mobile router and more than two mobile devices.

A core router contains X1 wired interfaces, X1 is a positive integer greater than 1; a proxy router comprises an upstream wired interface and X2 downstream wired interfaces, a data router comprises an upstream wired interface and X2 downstream wired interfaces, and X2 is a positive integer greater than 1; an access node comprising an upstream wired interface and a downstream wireless interface, a mobile router comprising an upstream wireless interface and a downstream wireless interface; a mobile device includes a wireless interface.

The upstream interface of the proxy router is connected with one interface of the core router, and each downstream interface of the proxy router is connected with the upstream interface of one data router; the upstream interface of a data router is connected with the downstream interface of a proxy router or a data router, and each downstream interface of the data router is connected with the upstream interfaces of other data routers or access nodes; the upstream interface of the access node is connected with the downstream interface of the data router, and the downstream interface of the access node is connected with the upstream interface link of the mobile router; the upstream interface of the mobile router is connected to a downstream interface link of an access node, and the downstream interface of the mobile router is connected to an interface link of the mobile device.

Each of the core routers, data routers, proxy routers, and access nodes have unique geographic coordinates.

Each interface of a core router is uniquely identified by an interface address, which is equal to j, and j takes values from 1 to X1.

The upstream interface and each downstream interface of a proxy router are uniquely identified by an interface address, and the interface address comprises a geographic abscissa and a geographic ordinate; a data network is uniquely identified by the interface address of the upstream interface of the proxy router of the network in which it resides.

The upstream interface and each downstream interface of a data router are respectively and uniquely identified by an interface address, the interface address is formed by geographical coordinates, and the geographical coordinates comprise a geographical abscissa and a geographical ordinate; the upstream interface and the downstream interface of one access node are both uniquely identified by an interface address, and the interface address is formed by geographic coordinates; the upstream interface and the downstream interface of a mobile router are both uniquely identified by an interface address, which is composed of geographical coordinates.

One kind of data is uniquely identified by a name, and one name is composed of geographical coordinates and a name ID; the mobile equipment realizes data communication through messages; a message is composed of a name field, a message type field, a source interface address set field, a destination interface address set field, an identification field and a load.

If one type of data has a length of m bits, a maximum length of a message payload is n bits, n and m are positive integers, m is greater than w1 xn, and w1 is a positive integer greater than 10, the data is divided into u data blocks and transmitted through u messages, as shown in equation (1); the length of the first u-1 data blocks is n, and the length of the last data block is m- (u-1) x n;

the message types are shown in the following table:

message type value	Message name
		1	Address configuration messages
2	Creating forwarding table messages
		3	Data request message
4	Data acquisition messages
		5	Data response message

The identification field of a message is only valid when the message type is 5, and the value of the identification field is 0 or 1; if the identification domain value is 0, the message load is the last data block of the type of data; if the identification field value is 1, the message load is indicated as other data blocks except the last data block in the type of data.

If the coordinates of the access node are (x1, y1), after the access node is started, the access node sets the interface address of the upstream interface of the access node to (x1, y1), the interface address of the downstream interface to (x1+ b1, y1+ b1), b1 is a non-zero integer, and the access node periodically performs the following interface address configuration operations:

step 101: start of

Step 102: the access node sends an address configuration message from the upstream interface, the geographic coordinate of the name domain value of the address configuration message is (x1, y1), the name ID is 0, the identifier is 0, the message type is 1, the source interface address set and the destination interface address set are both empty, and the load is empty.

Step 103: and judging whether the proxy router or the data router receives the address configuration message, if the proxy router receives the address configuration message, executing the step 105, and if not, executing the step 104.

Step 104: after receiving the address configuration message from the downstream interface, the data router sets the interface address of the downstream interface as the geographic coordinate in the name domain of the received address configuration message, and sets the interface address of the upstream interface as the geographic coordinate of the upstream interface. The data router sends an address configuration message from the upstream interface, the geographical coordinate of the name field value of the address configuration message is the geographical coordinate of the address configuration message, the name ID is 0, the identifier is 0, the message type is 1, the source interface address set and the destination interface address set are both empty, the load is empty, and step 103 is executed.

Step 105: after receiving the address configuration message from the downstream interface, the proxy router sets the interface address of the downstream interface as the geographic coordinate in the name domain of the received address configuration message, and sets the interface address of the upstream interface as the geographic coordinate of the proxy router.

Step 106: and (6) ending.

The proxy router and the data router can rapidly configure the address through the above process so as to ensure the correctness of data communication.

In the method of the invention, a mobile router sets the interface address of the upstream interface as the geographical coordinate (x2, y2) of the mobile router, sets the interface address of the downstream interface as (x2+ b2, y2+ b2), and b2 is a non-zero integer. A mobile device sets the interface address of its interface to its geographical coordinates. Each core router maintains a forwarding table, each forwarding table entry including geographic coordinates, an interface address and a lifecycle. After the agent router configures the interface address, the following operations are executed to create a forwarding table:

step 201: start of

Step 202: the proxy router sends a message for creating a forwarding table from an upstream interface, the geographical coordinates of the name domain value of the message for creating the forwarding table are the geographical coordinates of the proxy router, the name ID is 0, the identifier is 0, the message type is 2, the source interface address set and the destination interface address set are both empty, and the load is empty.

Step 203: and judging whether the proxy router or the core router receives the message for creating the forwarding table, if the proxy router receives the message for creating the forwarding table, executing the step 208, and if not, executing the step 204.

Step 204: after the core router receives the message for creating the forwarding table from an interface, if the interface address of the interface is k, the core router checks the forwarding table, and if a forwarding table entry exists, the geographic coordinate of the forwarding table entry is equal to the geographic coordinate in the name of the received message for creating the forwarding table and the interface address is equal to k, step 205 is executed, otherwise step 206 is executed.

Step 205: the core router receiving the message for creating the forwarding table selects a forwarding table entry, the geographic coordinate of the forwarding table entry is equal to the geographic coordinate in the name of the received message for creating the forwarding table, and the interface address is equal to k, sets the life cycle of the forwarding table entry to the maximum value, and executes step 207.

Step 206: and the core router receiving the message for creating the forwarding table creates a forwarding table entry, the geographic coordinate of the forwarding table entry is equal to the geographic coordinate in the name of the received message for creating the forwarding table, the interface address is equal to k, and the life cycle is set to be the maximum value.

Step 207: the core router having received the message of creating the forwarding table forwards the received message of creating the forwarding table from all interfaces except interface k, and performs step 203.

Step 208: the proxy router that received the create forwarding table message discards the create forwarding table message.

Step 209: and (6) ending.

The above process can correctly establish the forwarding table to ensure that the mobile device can correctly acquire the data.

In the method of the invention, each agent router, data router or access node respectively maintains a data table, and each data table item is composed of a data domain, a name domain and a life cycle domain. Each agent router, data router or access node maintains an index table, and each index table item is composed of an interface address set domain, a name domain and a life cycle domain.

If the data C3 consists of the name NA3, a proxy router saves the data C3 by creating a data table entry in which the data value is data C3, the name field value is name NA3, and the lifetime is maximum. Meanwhile, the proxy router creates an index table entry, the interface address set of the index table entry is null, the name domain value is NA3, and the life cycle is maximum. The data router or access node then saves the data C3 by performing the following process:

step 301: and starting.

Step 302: the data router or access node creates a data table entry in which the data value is data C3, the name field value is name NA3, and the lifetime is maximum. Meanwhile, the data router or the access node creates an index table entry, the interface address set of the index table entry is null, the name domain value is NA3, and the life cycle is the maximum value. The data router or the access node sends a data request message through an upstream interface, in the data request message, the geographic coordinate of the name domain value is the geographic coordinate of the data router or the access node, the name ID is 0, the message type is 3, the identifier is 0, and the source interface address set is formed by the geographic coordinate of the data router or the access node. The destination interface address set is empty and the load is empty.

Step 303: it is determined whether the data request message is received by the router or the data router, and if the data request message is received by the proxy router, step 308 is performed, otherwise step 304 is performed.

Step 304: after receiving the data request message, the data router checks the index table, if there is an index table entry, the interface address set field value of the index table entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the name of the received data request message, then step 305 is executed, otherwise step 306 is executed.

Step 305: the data router receiving the data request message selects an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the name of the received data request message, the life cycle of the forwarding entry is set to the maximum value, and step 307 is executed.

Step 306: and the data router receiving the data request message creates an index table entry, the interface address set domain value of the index table entry is equal to the source interface address set domain value of the received data request message, the name domain value is equal to the name of the received data request message, and the life cycle of the forwarding table entry is set to be the maximum value.

Step 307: the data router receiving the data request message adds its own geographical coordinates to the source interface address set of the received data request message, and the geographical coordinates are used as the first element of the source interface address set, forwards the received data request message from the upstream interface, and executes step 303.

Step 308: after receiving the data request message, the proxy router checks the index table, if an index table entry exists, the interface address set field value of the index table entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the name of the received data request message, then step 309 is executed, otherwise step 310 is executed.

Step 309: the proxy router receiving the data request message selects an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the name of the received data request message, the life cycle of the forwarding entry is set to the maximum value, and step 311 is executed.

Step 310: the proxy router receiving the data request message creates an index table entry, the interface address set domain value of the index table entry is equal to the source interface address set domain value of the received data request message, the name domain value is equal to the name of the received data request message, and the life cycle of the forwarding table entry is set to be the maximum value.

Step 311: and (6) ending.

The above process can correctly save the data to ensure that the mobile device can correctly acquire the data.

In the method of the invention, if data C3 is uniquely identified by name NA3, name NA3 is composed of geographical coordinates (x3, y3) and name ID NID3, the length of data C3 is m3 bits, the maximum length of a message load is n bits, n and m3 are positive integers, m3 is greater than w1 x n, the data is divided into u3 data blocks and transmitted by u3 messages, as shown in formula (2), the length of the first u3-1 data blocks is n, and the length of the last data block is m3- (u3-1) x n.

Each data router, proxy router or access node maintains a request table, each request table including a name field and an interface address set field.

Under the condition that the mobile device MD3 is connected with the mobile router MR3, the mobile router MR3 is connected with the access node AP3, the access node AP3 is located in the data network DN1, and the proxy router of the data network DN1 is PR1, if at least one index entry exists in the proxy router PR1, the name field value of the index entry is NA3, the mobile device MD3 obtains the data C3 through the following processes:

step 401: and starting.

Step 402: the mobile device MD3 sends a data acquisition message, where the name of the data acquisition message is NA3, the message type is 4, the identifier is 0, the source interface address set and the destination interface address set are null, and the load is null. After receiving the data acquisition message from the downstream interface, the mobile router MR3 forwards the data acquisition message from the upstream interface.

Step 403: after the access node AP3 receives the data get message, it looks at the request table, if there is a request table entry whose name field value is equal to the name of the received data get message, then step 427 is performed, otherwise step 404 is performed.

Step 404: the access node AP3 creates a request entry with a name field value equal to the name of the received data fetch message and a set of interface addresses equal to the set of source interface addresses of the received data fetch message. The access node AP3 looks at the data table and if there is a data table entry with a name field value equal to the name of the received data acquisition message, then step 405 is performed, otherwise step 409 is performed.

Step 405: the access node AP3 divides the data C3 into u3 data blocks, sets a variable u1, and sets an initial value of the variable u1 to 0.

Step 406: the access node AP3 increments the variable u1 by 1 and performs step 407 if u1 is less than u3, otherwise performs step 408.

Step 407: the access node AP3 creates a data response message with a name field equal to the name of the received data response message, a message type of 5, an identification field of 1, a source interface address set and a destination interface address set of null, and a load of u1 data blocks, and performs step 406.

Step 408: the access node AP3 creates a data response message with a name field equal to the name of the received data response message, a message type of 5, an identification field of 0, a source interface address set and a destination interface address set of null, and a payload of u1 data block, and performs step 427.

Step 409: the access node AP3 adds its geographical coordinates to the source interface address set of the received data response message, and the geographical coordinates are the first element of the source interface address set, and forwards the received data response message from the upstream interface.

Step 410: if the proxy router receives the data response message, step 420 is performed, and if the data router or the access node receives the data response message, step 411 is performed.

Step 411: the data router or the access node checks the request table after receiving the data response message, if there is a request table entry whose name field value is equal to the name of the received data response message, step 427 is executed, otherwise, step 412 is executed.

Step 412: the data router or the access node receiving the data response message creates a request table entry, the name field value of the request table entry is equal to the name of the received data response message, and the interface address set is equal to the source interface address set of the received data response message. The data router or access node looks at the data table and if there is a data entry with a name field value equal to the name of the received data response message, step 416 is performed, otherwise step 413 is performed.

Step 413: the data router or access node that received the data response message looks at the index table, and if there is one, the name field value of the index table is equal to the name of the received data response message, then step 414 is executed, otherwise step 415 is executed.

Step 414: the data router or access node receiving the data response message selects an index table having a name field value equal to the name of the received data response message, updates the destination interface address set of the data response message to an interface address set field value of the index table, selects an interface having an interface address equal to the first element of the destination interface address set of the data response message, adds the first element of the destination interface address set of the data response message to the source interface address set of the data response message as the first element of the source interface address set, deletes the first element from the destination interface address set of the data response message, sends the data response message from the selected interface, and performs step 410.

Step 415: the data router or access node receiving the data response message adds its own geographical coordinates to the source interface address set of the data response message and serves as the first element of the source interface address set, and sends the data response message from the upstream interface, and step 410 is executed.

Step 416: the data router or the access node that receives the data response message divides the data C3 into u3 data blocks, sets a variable u1, and the initial value of the variable u1 is 0.

Step 417: the data router or access node receiving the data response message increments the variable u1 by 1 and performs step 418 if u1 is less than u3 and otherwise performs step 419.

Step 418: the data router or the access node that receives the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 1, the source interface address set is null, the destination interface address set is the source interface address set of the received data response message, and the load is the u1 th data block, and step 417 is executed.

Step 419: the data router or the access node receiving the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 0, the interface address set is null, the destination interface address set is the source interface address set of the received data response message, and the load is the u1 th data block, and step 427 is executed.

Step 420: after receiving the data response message, the proxy router checks the request table, if there is a request table entry whose name field value is equal to the name of the received data response message, then step 427 is executed, otherwise step 421 is executed.

Step 421: the proxy router receiving the data response message creates a request table entry, the name field value of the request table entry is equal to the name of the received data response message, and the interface address set is equal to the source interface address set of the received data response message. The proxy router looks at the data table and if there is a data entry with a name field value equal to the name of the received data response message, then step 423 is performed, otherwise step 422 is performed.

Step 422: the proxy router receiving the data response message selects an index table having a name field value equal to the name of the received data response message, updates the destination interface address set of the data response message to an interface address set field value of the index table, selects an interface having an interface address equal to the first element of the destination interface address set of the data response message, adds the first element of the destination interface address set of the data response message to the source interface address set of the data response message as the first element of the source interface address set, deletes the first element from the destination interface address set of the data response message, sends the data response message from the selected interface, and performs step 410.

Step 423: the proxy router having received the data response message divides the data C3 into u3 data blocks, sets a variable u1, and the initial value of the variable u1 is 0.

Step 424: the data router receiving the data response message increments the variable u1 by 1, executes step 425 if u1 is less than u3, otherwise executes step 426.

Step 425: the data router receiving the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 1, the source interface address set is empty, the destination interface address set is the source interface address set of the received data response message, and the load is the u1 th data block, and step 424 is executed.

Step 426: the data router receiving the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 0, the interface address set is empty, the destination interface address set is the source interface address set of the received data response message, and the load is the u1 th data block.

Step 427: the access node, the data router or the proxy router looks at the request table, selects all request table entries with the name domain value equal to the name of the data response message, and performs the following operations for each request table entry: updating the destination interface address set of the data response message to the interface address set of the request table entry, if the destination interface address set is empty, forwarding the data response message from a downstream interface, if the destination interface address set is not empty, selecting an interface, wherein the interface address of the interface is equal to the first element of the destination interface address set, deleting the first element from the destination interface address set, forwarding the data response message from the interface, if the identification domain value of the data response message is 0, deleting the request table entry, otherwise, keeping the request table entry. If the data response message destination interface address set field value is null, then step 428 is performed, otherwise step 427 is re-performed.

Step 428: after receiving the data response message, the mobile router MR3 forwards the data response message from the downstream interface. After receiving the data response message, mobile device MD3 saves the data in the data response message.

Step 429: and (6) ending.

In the above process, after the access node, the data router or the proxy router receives the message with the message type of 5, if the data in the message type is stored, the steps 301 to 311 are executed to create the index table.

The above process can ensure that the mobile device acquires the data correctly.

In the method of the present invention, under the condition that data C3 is identified by name NA3, mobile device MD4 is connected to mobile router MR4 through a link, mobile router MR4 is connected to access node AP4 through a link, access node AP4 is located in data network DN2, and the proxy router of data network DN2 is PR2, if the name field value of any index entry of proxy router PR2 is not equal to NA3, mobile device MD4 obtains data C3 through the following process:

step 501: and starting.

Step 502: the mobile device MD4 sends a data acquisition message, where the name of the data acquisition message is NA3, the message type is 4, the identifier is 0, the source interface address set and the destination interface address set are null, and the load is null. After receiving the data acquisition message from the downstream interface, the mobile router MR4 forwards the data acquisition message from the upstream interface.

Step 503: after the access node AP4 receives the data get message, it looks at the request table, if there is a request table entry whose name field value is equal to the name of the received data get message, then step 520 is executed, otherwise step 504 is executed.

Step 504: the access node AP4 creates a request entry with a name field value equal to the name of the received data fetch message and a set of interface addresses equal to the set of source interface addresses of the received data fetch message. The access node AP4 adds its geographical coordinates to the source interface address set of the received data acquisition message and forwards the received data acquisition message from the upstream interface as the first element of the source interface address set.

Step 505: and judging whether the proxy router or the data router receives the data acquisition message, if the proxy router receives the data acquisition message, executing the step 508, and if not, executing the step 506.

Step 506: after receiving the data acquisition message, the data router checks the request table, if a request table entry exists, and the name field value of the request table entry is equal to the name of the received data acquisition message, then step 520 is executed, otherwise step 507 is executed.

Step 507: the data router receiving the data acquisition message creates a request table entry, the name field value of the request table entry is equal to the name of the received data acquisition message, and the interface address set is equal to the source interface address set of the received data acquisition message. The data router adds its own geographical coordinates to the source interface address set of the received data acquisition message, and the geographical coordinates are used as the first element of the source interface address set, forwards the received data acquisition message from the upstream interface, and executes step 505.

Step 508: after receiving the data acquisition message, the proxy router checks the request table, if there is a request table entry whose name field value is equal to the name of the received data acquisition message, then step 520 is executed, otherwise step 509 is executed.

Step 509: the proxy router receiving the data acquisition message creates a request table entry, the name field value of the request table entry is equal to the name of the received data acquisition message, and the interface address set is equal to the source interface address set of the received data acquisition message. The proxy router adds the geographical coordinates of the proxy router to a source interface address set of the received data acquisition message, and forwards the received data acquisition message from an upstream interface by taking the geographical coordinates as a first element of the source interface address set.

Step 510: if the core router receives the data acquisition message, step 511 is performed, and if the proxy router, the data router or the access node receives the data acquisition message, step 513 is performed.

Step 511: after the core router receives the data acquisition message from an interface, the interface address of the interface is z1, the core router checks the request table, if there is a request table entry, the name field value of the request table entry is equal to the name of the received data acquisition message, step 520 is executed, otherwise step 512 is executed.

Step 512: the core router that received the data fetch message from interface z1 creates a request entry with a name field value equal to the name of the received data fetch message and a set of interface addresses equal to the source interface address set of the received data fetch message. The core router adds interface address z1 to the source interface address set of the received data acquisition message with the interface address as the first element of the source interface address set, selects a forwarding entry with a geographic coordinate field value equal to the geographic coordinate in the name of the received data acquisition message, forwards the data acquisition message from the interface identified by the interface address of the forwarding entry, and performs step 510.

Step 513: the proxy router, data router or access node looks at the request table and if there is a request table entry whose name field value is equal to the name of the received data acquisition message, step 520 is performed, otherwise step 514 is performed.

Step 514: the proxy router, the data router or the access node which receives the data acquisition message creates a request table entry, the name field value of the request table entry is equal to the name of the received data acquisition message, and the interface address set is equal to the source interface address set of the received data acquisition message. The proxy router, data router or access node looks at the data table and if there is a data table entry with a name field value equal to the name of the received data acquisition message, step 516 is performed, otherwise step 515 is performed.

Step 515: the proxy router, the data router or the access node that receives the data acquisition message selects an index table, the name field value of the index table is equal to the name of the received data acquisition message, the destination interface address set of the data acquisition message is updated to the interface address set field value of the index table, an interface is selected, the interface address of the interface is equal to the first element of the destination interface address set of the data acquisition message, the first element of the destination interface address set of the data acquisition message is added to the source interface address set of the data acquisition message and is used as the first element of the source interface address set, the first element is deleted from the destination interface address set of the data acquisition message, the data acquisition message is sent from the selected interface, and step 513 is executed.

Step 516: the proxy router, the data router, or the access node that receives the data acquisition message divides the data C3 into u3 data blocks, sets a variable u1, and sets an initial value of the variable u1 to 0.

517: the proxy router, data router or access node receiving the data acquisition message increments the variable u1 by 1, if u1 is less than u3, step 518 is performed, otherwise step 519 is performed.

Step 518: the proxy router, the data router or the access node which receives the data acquisition message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 1, the source interface address set is empty, the destination interface address set is the source interface address set of the received data response message, and the load is the u1 data block, and step 517 is executed.

Step 519: the proxy router, the data router or the access node which receives the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 0, the interface address set is empty, the destination interface address set is the source interface address set of the received data response message, and the load is the u1 data blocks.

Step 520: the access node, the data router, the proxy router or the core router looks up the request table, selects all request table entries with the name field value equal to the name of the data response message, and for each request table entry, the core router, the access node, the data router or the proxy router performs the following operations: updating the destination interface address set of the data response message to the interface address set of the request table entry, if the destination interface address set is empty, forwarding the data response message from a downstream interface, if the destination interface address set is not empty, selecting an interface, wherein the interface address of the interface is equal to the first element of the destination interface address set, deleting the first element from the destination interface address set, forwarding the data response message from the interface, if the identification domain value of the data response message is 0, deleting the request table entry, otherwise, keeping the request table entry. If the data response message destination interface address set field value is null, step 521 is executed, otherwise step 520 is executed again.

Step 521: after receiving the data response message, the mobile router MR4 forwards the data response message from the downstream interface. After receiving the data response message, mobile device MD4 saves the data in the data response message.

Step 522: and (6) ending.

Has the advantages that: the invention provides an efficient new generation big data network implementation method, and each node in the big data network can rapidly acquire data through the network implementation method provided by the invention, thereby greatly improving the service performance. The invention can be applied to various fields such as traffic road condition detection and control, agricultural engineering and the like, and has wide application prospect.

Drawings

The foregoing and/or other advantages of the invention will become further apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic view of an address configuration process according to the present invention.

Fig. 2 is a schematic diagram of a process for establishing a forwarding table according to the present invention.

Fig. 3 is a schematic diagram of a data saving process according to the present invention.

Fig. 4 is a schematic diagram of a data communication process according to the present invention.

Fig. 5 is a schematic diagram of a data acquisition process according to the present invention.

The specific implementation mode is as follows:

the invention provides an efficient new generation big data network implementation method, and each node in the big data network can rapidly acquire data through the network implementation method provided by the invention, thereby greatly improving the service performance. The invention can be applied to various fields such as traffic road condition detection and control, agricultural engineering and the like, and has wide application prospect.

Fig. 1 is a schematic view of an address configuration process according to the present invention. The network includes a backbone network, a data network, and a mobile network. The backbone network comprises more than two core routers, the data network comprises a proxy router, a data router and an access node, and the mobile network comprises one mobile router and more than two mobile devices.

A core router contains X1 wired interfaces, X1 being a positive integer greater than 1. A proxy router comprises an upstream wired interface and X2 downstream wired interfaces, a data router comprises an upstream wired interface and X2 downstream wired interfaces, and X2 is a positive integer greater than 1. An access node includes an upstream wired interface and a downstream wireless interface, and a mobile router includes an upstream wireless interface and a downstream wireless interface. A mobile device includes a wireless interface.

The upstream interface of the proxy router is connected to an interface of the core router, and each downstream interface of the proxy router is connected to an upstream interface of a data router. The upstream interface of one data router is connected to the downstream interfaces of the proxy routers or data routers, and each downstream interface of a data router is connected to the upstream interfaces of other data routers or access nodes. The upstream interface of the access node is connected with the downstream interface of the data router, and the downstream interface of the access node is connected with the upstream interface link of the mobile router. The upstream interface of the mobile router is connected to a downstream interface link of an access node, and the downstream interface of the mobile router is connected to an interface link of the mobile device.

The upstream interface and each downstream interface of a proxy router are uniquely identified by an interface address that includes a geographic abscissa and a geographic ordinate. A data network is uniquely identified by the interface address of the upstream interface of the proxy router of the network in which it resides.

The upstream interface and each downstream interface of a data router are uniquely identified by an interface address, the interface address is formed by geographic coordinates, and the geographic coordinates comprise a geographic horizontal coordinate and a geographic vertical coordinate. The upstream interface and the downstream interface of an access node are both uniquely identified by an interface address, which is formed by geographical coordinates. The upstream interface and the downstream interface of a mobile router are both uniquely identified by an interface address, which is composed of geographical coordinates.

One type of data is uniquely identified by a name, and one name is composed of geographical coordinates and a name ID. The mobile device communicates data through messages. A message is composed of a name field, a message type field, a source interface address set field, a destination interface address set field, an identification field and a load.

If one type of data has a length of m bits, a maximum length of a message payload is n bits, n and m are positive integers, m is greater than w1 × n, and w1 is a positive integer greater than 10, the data is divided into u data blocks and transmitted through u messages, as shown in equation (1). The first u-1 data blocks have a length of n, and the last data block has a length of m- (u-1) x n.

The message types are shown in the following table:

the identification field of a message is valid only if the message type is 5, which has a value of 0 or 1. If the identification field value is 0, it indicates that the message payload is the last data block of that type of data. If the identification field value is 1, the message load is indicated as other data blocks except the last data block in the type of data.

step 101: start of

Step 106: and (6) ending.

Fig. 2 is a schematic diagram of a process for establishing a forwarding table according to the present invention. A mobile router sets the interface address of its upstream interface to its own geographical coordinates (x2, y2), sets the interface address of its downstream interface to (x2+ b2, y2+ b2), and b2 is a non-zero integer. A mobile device sets the interface address of its interface to its geographical coordinates. Each core router maintains a forwarding table, each forwarding table entry including geographic coordinates, an interface address, and a lifetime. After the agent router configures the interface address, the following operations are executed to create a forwarding table:

step 201: start of

Step 209: and (6) ending.

Fig. 3 is a schematic diagram of a data saving process according to the present invention. Each agent router, data router or access node maintains a data table, and each data table is composed of a data field, a name field and a life cycle field. Each agent router, data router or access node maintains an index table, and each index table item is composed of an interface address set domain, a name domain and a life cycle domain.

step 301: and starting.

Step 303: and judging whether the data request message is received by the proxy router or the data router, if the data request message is received by the proxy router, executing the step 308, otherwise, executing the step 304.

Step 311: and (6) ending.

Fig. 4 is a schematic diagram of a data communication process according to the present invention. If the data C3 is uniquely identified by a name NA3, the name NA3 is composed of geographical coordinates (x3, y3) and a name ID NID3, the length of the data C3 is m3 bits, the maximum length of one message payload is n bits, n and m3 are positive integers, and m3 is greater than w1 × n, the data is divided into u3 data blocks and transmitted through u3 messages, as shown in formula (2), the first u3-1 data blocks are n, and the last data block is m3- (u3-1) × n.

step 401: and starting.

Step 429: and (6) ending.

Fig. 5 is a schematic diagram of a data acquisition process according to the present invention. Under the condition that the data C3 is identified by a name NA3, the mobile device MD4 is link-connected with the mobile router MR4, the mobile router MR4 is link-connected with the access node AP4, the access node AP4 is located in the data network DN2, and the proxy router of the data network DN2 is PR2, if the name domain value of any index entry of the proxy router PR2 is not equal to the name NA3, the mobile device MD4 obtains the data C3 by the following process:

step 501: and starting.

Step 522: and (6) ending.

Example 1

Based on the simulation parameters in table 1, this embodiment simulates an efficient new-generation big data network implementation method in the present invention, and the performance analysis is as follows: when the amount of transmission data increases, the delay of data transmission increases, and when the amount of data transmission decreases, the delay of data transmission decreases, and the average delay of data acquisition is 2.5 s.

TABLE 1 simulation parameters

The present invention provides an efficient new generation big data network implementation method, and the method and the way for implementing the technical solution are many, the above description is only a preferred embodiment of the present invention, it should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications may be made, and these improvements and modifications should also be regarded as the protection scope of the present invention. The components not specified in this embodiment can be implemented by the prior art.

Claims

1. an efficient new generation big data network implementation method is characterized in that, described network comprises backbone network, data network and mobile network; Backbone network comprises more than two core routers, and data network comprises proxy router, data router and Access node, the mobile network includes a mobile router and more than two mobile devices;

A core router includes X1 wired interfaces, where X1 is a positive integer greater than 1; a proxy router includes an upstream wired interface and X2 downstream wired interfaces, and a data router includes an upstream wired interface and X2 downstream wired interfaces, where X2 is greater than A positive integer of 1; an access node includes an upstream wired interface and a downstream wireless interface, a mobile router includes an upstream wireless interface and a downstream wireless interface; a mobile device includes a wireless interface;

The upstream interface of the proxy router is connected to an interface of the core router, each downstream interface of the proxy router is connected to the upstream interface of a data router; the upstream interface of a data router is connected to the downstream interface of the proxy router or the data router, and each downstream interface of the data router is connected to the downstream interface of the proxy router or the data router. Each downstream interface is connected to the upstream interface of other data routers or access nodes; the upstream interface of the access node is connected to the downstream interface of the data router, and the downstream interface of the access node is connected to the upstream interface link of the mobile router; the upstream interface of the mobile router The interface is connected to the downstream interface link of an access node, and the downstream interface of the mobile router is connected to the interface link of the mobile device;

Each core router, data router, proxy router and access node has unique geographic coordinates;

Each interface of a core router is uniquely identified by an interface address, the interface address is equal to j, and j ranges from 1 to X1;

The upstream interface of a proxy router and each downstream interface are uniquely identified by an interface address, and the interface address includes geographic abscissa and geographic ordinate; a data network is uniquely identified by the interface address of the upstream interface of the proxy router in the network;

The upstream interface and each downstream interface of a data router are uniquely identified by an interface address, which consists of geographic coordinates, which include geographic abscissas and geographic ordinates; the upstream and downstream interfaces of an access node are both represented by An interface address is uniquely identified, and the interface address is composed of geographic coordinates; both the upstream interface and the downstream interface of a mobile router are uniquely identified by an interface address, and the interface address is composed of geographic coordinates;

A data is uniquely identified by a name, and a name is composed of geographic coordinates and a name ID; the mobile device realizes data communication through messages; a message is composed of a name field, a message type field, a source interface address collection field, a destination interface address collection field, and an identifier. Domain and payload composition;

If the length of a type of data is m bits, the maximum length of a message payload is n bits, n and m are positive integers, m is greater than w1×n, and w1 is a positive integer greater than 10, then the data is divided into u pieces The data blocks are transmitted through u messages, as shown in formula (1); the length of the first u-1 data blocks is n, and the length of the last data block is m-(u-1)×n;

The message types are shown in the following table:

message type value message name 1 address configuration message 2 Create a forwarding table message 3 data request message 4 data acquisition message 5 data response message

The identification field of a message is only valid when the message type is 5, and its value is 0 or 1; if the value of the identification field is 0, it indicates that the message payload is the last data block of this type of data; if the value of the identification field is 1 , it indicates that the message payload is other data blocks except the last data block in this type of data;

If the coordinates of the access node are (x1, y1), after the access node is started, it sets the interface address of its upstream interface to (x1, y1) and the interface address of the downstream interface to (x1+b1, y1) +b1), b1 is a non-zero integer, the access node periodically performs the following interface address configuration operations:

Step 101: start;

Step 102: The access node sends an address configuration message from the upstream interface, the geographic coordinates of the name field value of the address configuration message are (x1, y1), the name ID is 0, the identifier is 0, the message type is 1, and the source interface address is The set and destination interface address set are both empty, and the payload is empty;

Step 103: Determine whether the proxy router or the data router has received the address configuration message, if the proxy router receives the address configuration message, execute step 105, otherwise execute step 104;

Step 104: After receiving the address configuration message from the downstream interface, the data router sets the interface address of the downstream interface to the geographic coordinates in the name field of the received address configuration message, and sets the interface address of its own upstream interface to its own The data router sends an address configuration message from the upstream interface, the geographic coordinates of the name field value of the address configuration message are its own geographic coordinates, the name ID is 0, the identifier is 0, the message type is 1, and the source interface address The set and the destination interface address set are both empty, and the payload is empty, and step 103 is executed;

Step 105: After receiving the address configuration message from the downstream interface, the proxy router sets the interface address of the downstream interface to the geographic coordinates in the name field of the received address configuration message, and sets the interface address of its own upstream interface to its own the geographic coordinates;

Step 106: End.

2. a kind of efficient new generation big data network realization method according to claim 1 is characterized in that, a mobile router sets the interface address of its upstream interface as its own geographic coordinates (x2, y2), and the downstream interface The interface address is set to (x2+b2, y2+b2), b2 is a non-zero integer; a mobile device sets the interface address of its own interface to its own geographic coordinates; each core router maintains a forwarding table, each forwarding table Items include geographic coordinates, interface address and life cycle; after the proxy router configures the interface address, perform the following operations to create a forwarding table:

Step 201: start;

Step 202: The proxy router sends a forwarding table creation message from the upstream interface, the geographic coordinates of the name field value of the forwarding table creation message are the geographic coordinates of the proxy router, the name ID is 0, the identifier is 0, the message type is 2, the source The interface address set and destination interface address set are both empty, and the payload is empty;

Step 203: Determine whether the proxy router or the core router receives the create forwarding table message, if the proxy router receives the create forwarding table message, execute step 208, otherwise execute step 204;

Step 204: After the core router receives the message of creating a forwarding table from an interface, if the interface address of the interface is k, the core router checks the forwarding table. If there is a forwarding table entry, the geographic coordinates of the forwarding table entry are equal to the received message. Create the geographic coordinates in the message name of the forwarding table and the interface address is equal to k, then go to step 205, otherwise go to step 206;

Step 205: The core router that has received the message of creating a forwarding table selects a forwarding table entry, the geographic coordinates of the forwarding table entry are equal to the geographic coordinates in the name of the received message of creating a forwarding table and the interface address is equal to k, and the forwarding table entry is The life cycle is set to the maximum value, and step 207 is executed;

Step 206: The core router that receives the message of creating a forwarding table creates a forwarding table entry, the geographic coordinates of the forwarding table entry are equal to the geographic coordinates in the name of the received message of creating a forwarding table, the interface address is equal to k, and the life cycle is set to the maximum value. value;

Step 207: the core router that received the forwarding table creation message forwards the received forwarding table creation message from all interfaces except interface k, and executes step 203;

Step 208: The proxy router that receives the message of creating a forwarding table discards the message of creating a forwarding table;

Step 209: End.

3. a kind of efficient new generation big data network realization method according to claim 2 is characterized in that, each proxy router, data router or access node maintains a data table respectively, and each data table item is determined by the data field. , the name field and the life cycle field; each proxy router, data router or access node maintains an index table, and each index table entry is composed of the interface address set field, the name field and the life cycle field;

If the data C3 consists of the name NA3, a proxy router saves the data C3 by creating a data table entry, in which the data value is the data C3, the name field value is the name NA3, and the lifetime is the maximum value; at the same time, The proxy router creates an index entry, the interface address set of the index entry is empty, the name field value is NA3, and the life cycle is the maximum value; then the data router or access node saves the data C3 by executing the following process:

Step 301: start;

Step 302: The data router or access node creates a data entry, in which the data value is data C3, the name field value is name NA3, and the life cycle is the maximum value; at the same time, the data router or access The node creates an index entry, the interface address set of the index entry is empty, the name field value is NA3, and the life cycle is the maximum value; the data router or access node sends a data request message through the upstream interface, the data request message , the geographic coordinates of the name field value are the geographic coordinates of the data router or access node, the name ID is 0, the message type is 3, the identifier is 0, and the source interface address set is composed of the geographic coordinates of the data router or access node. ;The destination interface address set is empty, and the payload is empty;

Step 303: Determine whether the proxy router or the data router receives the data request message, if the proxy router receives the data request message, then execute step 308, otherwise, execute step 304;

Step 304: After receiving the data request message, the data router checks the index table. If there is an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name If the field value is equal to the name of the received data request message, then go to step 305, otherwise go to step 306;

Step 305: The data router that received the data request message selects an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the received data request message. The name of the data request message, set the life cycle of the forwarding entry to the maximum value, and execute step 307;

Step 306: The data router that received the data request message creates an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the received data request message. The name of the data request message, and the life cycle of the forwarding entry is set to the maximum value;

Step 307: The data router that has received the data request message adds its own geographic coordinates to the source interface address set of the received data request message, and the geographic coordinates are used as the first element of the source interface address set, and forwarded from the upstream interface The received data request message, go to step 303;

Step 308: After receiving the data request message, the proxy router checks the index table, if there is an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, name If the field value is equal to the name of the received data request message, go to step 309, otherwise go to step 310;

Step 309: The proxy router that receives the data request message selects an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the received data request message. The name of the data request message, set the life cycle of the forwarding entry to the maximum value, and execute step 311;

Step 310: The proxy router that receives the data request message creates an index entry, the interface address set field value of the index entry is equal to the source interface address set field value of the received data request message, and the name field value is equal to the received data request message. The name of the data request message, and the life cycle of the forwarding entry is set to the maximum value;

Step 311: End.

4. a kind of efficient new generation big data network realization method according to claim 3 is characterized in that, if data C3 is uniquely identified by name NA3, and name NA3 is made up of geographical coordinates (x3, y3) and name ID NID3, The length of data C3 is m3 bits, the maximum length of a message payload is n bits, n and m3 are positive integers, and m3 is greater than w1×n, then the data is divided into u3 data blocks and transmitted through u3 messages, such as the formula As shown in (2), the length of the first u3-1 data block is n, and the length of the last data block is m3-(u3-1)×n;

Each data router, proxy router or access node saves a request table, and a request table entry includes the name field and the interface address set field;

Under the condition that the mobile device MD3 is linked to the mobile router MR3, the mobile router MR3 is linked to the access node AP3, the access node AP3 is located in the data network DN1, and the proxy router of the data network DN1 is PR1, if the proxy router PR1 At least one index entry exists, and the name field value of the index entry is NA3, and the mobile device MD3 obtains the data C3 through the following process:

Step 401: start;

Step 402: The mobile device MD3 sends a data acquisition message. In the data acquisition message, the name is NA3, the message type is 4, the identifier is 0, the source interface address set and the destination interface address set are empty, and the load is empty; mobile router MR3 After receiving the data acquisition message from the downstream interface, forward the data acquisition message from the upstream interface;

Step 403: After the access node AP3 receives the data acquisition message, it checks the request table. If there is a request table entry, and the name field value of the request table entry is equal to the name of the received data acquisition message, step 427 is executed; otherwise, step 427 is executed. Go to step 404;

Step 404: the access node AP3 creates a request entry, the name field value of the request entry is equal to the name of the received data acquisition message, and the set of interface addresses is equal to the set of source interface addresses of the received data acquisition message; access The node AP3 checks the data table, if there is a data table entry, the name field value of the data table entry is equal to the name of the received data acquisition message, then executes step 405, otherwise executes step 409;

Step 405: the access node AP3 divides the data C3 into u3 data blocks, sets the variable u1, and the initial value of the variable u1 is 0;

Step 406: the access node AP3 increments the variable u1 by 1, if u1 is less than u3, then executes step 407, otherwise executes step 408;

Step 407: The access node AP3 creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 1, the source interface address set and the destination interface address The set is empty, the load is the u1th data block, and step 406 is executed;

Step 408: the access node AP3 creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 0, the source interface address set and the destination interface address The set is empty, the load is the u1th data block, and step 427 is executed;

Step 409: The access node AP3 adds its own geographic coordinates to the source interface address set of the received data response message, and the geographic coordinates are used as the first element of the source interface address set, and forwards the received data from the upstream interface response message;

Step 410: if the proxy router receives the data response message, execute step 420; if the data router or the access node receives the data response message, execute step 411;

Step 411: After receiving the data response message, the data router or the access node checks the request table. If there is a request table entry, and the name field value of the request table entry is equal to the name of the received data response message, step 427 is executed, otherwise Go to step 412;

Step 412: The data router or access node that received the data response message creates a request entry, the name field value of the request entry is equal to the name of the received data response message, and the interface address set is equal to the received data response The source interface address set of the message; the data router or access node checks the data table, if there is a data table entry, the name field value of the data table entry is equal to the name of the received data response message, then execute step 416, otherwise execute step 416 Step 413;

Step 413: The data router or access node that received the data response message checks the index table, if there is an index table, and the name field value of the index table is equal to the name of the received data response message, then execute step 414, otherwise step 413 415;

Step 414: The data router or access node that received the data response message selects an index table, and the name field value of the index table is equal to the name of the received data response message, and updates the destination interface address set of the data response message to The interface address set field value of the index table, select an interface whose interface address is equal to the first element of the destination interface address set of the data response message, and add the first element of the destination interface address set of the data response message to the The data response message source interface address set is taken as the first element of the source interface address set, the first element is deleted from the data response message destination interface address set, the data response message is sent from the selected interface, and step 410 is performed;

Step 415: The data router or access node that received the data response message adds its own geographic coordinates to the source interface address set of the data response message as the first element of the source interface address set, and sends the data response from the upstream interface message, go to step 410;

Step 416: The data router or access node that receives the data response message divides the data C3 into u3 data blocks, sets the variable u1, and the initial value of the variable u1 is 0;

Step 417: The data router or access node that has received the data response message increments the variable u1 by 1, if u1 is less than u3, execute step 418, otherwise execute step 419;

Step 418: The data router or access node that received the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, and the identification field value is 1 , the source interface address set is empty, the destination interface address set is the source interface address set of the received data response message, the load is the u1th data block, and step 417 is performed;

Step 419: The data router or access node that received the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, and the identification field value is 0 , the interface address set is empty, the destination interface address set is the source interface address set of the received data response message, the load is the u1th data block, and step 427 is performed;

Step 420: After the proxy router receives the data response message, it checks the request table. If there is a request table entry, and the name field value of the request table entry is equal to the name of the received data response message, perform step 427, otherwise, perform step 427. 421;

Step 421: The proxy router that receives the data response message creates a request entry, the name field value of the request entry is equal to the name of the received data response message, and the interface address set is equal to the source interface of the received data response message Address collection; the proxy router checks the data table, if there is a data table entry, and the name field value of the data table entry is equal to the name of the received data response message, then execute step 423, otherwise execute step 422;

Step 422: The proxy router that receives the data response message selects an index table, the name field value of the index table is equal to the name of the received data response message, and updates the destination interface address set of the data response message to the index table. The value of the interface address set field, select an interface whose interface address is equal to the first element of the destination interface address set of the data response message, and add the first element of the data response message destination interface address set to the data response message. The source interface address set is combined as the first element of the source interface address set, the first element is deleted from the destination interface address set of the data response message, the data response message is sent from the selected interface, and step 410 is performed;

Step 423: The proxy router that receives the data response message divides the data C3 into u3 data blocks, sets the variable u1, and the initial value of the variable u1 is 0;

Step 424: The data router that received the data response message increments the variable u1 by 1, if u1 is less than u3, then executes step 425, otherwise executes step 426;

Step 425: The data router that received the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 1, and the source interface address is The set is empty, the destination interface address set is the source interface address set of the received data response message, the load is the u1th data block, and step 424 is executed;

Step 426: The data router that received the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, the identification field value is 0, and the interface address set If it is empty, the destination interface address set is the source interface address set of the received data response message, and the load is the u1th data block;

Step 427: The access node, data router or proxy router checks the request table, selects all request table entries whose name field value is equal to the name of the data response message, and for each request table entry, the access node, data router or proxy router executes The following operations: Update the destination interface address set of the data response message to the interface address set of the request entry. If the destination interface address set is empty, forward the data response message from the downstream interface. If the destination interface address set is empty, forward the data response message from the downstream interface. If it is not empty, select an interface whose interface address is equal to the first element of the destination interface address set, delete the first element from the destination interface address set, and forward the data response message from this interface. If the ID field value of the data response message is 0, delete the request entry, otherwise keep the request entry; if the destination interface address set field value of the data response message is empty, execute step 428, otherwise execute step 427 again;

Step 428: after receiving the data response message, the mobile router MR3 forwards the data response message from the downstream interface; the mobile device MD3 saves the data in the data response message after receiving the data response message;

Step 429: end;

In the above process, after the access node, the data router or the proxy router receives the message with the message type of 5, if the data in the message type is saved, steps 301 to 311 are executed to create an index table.

5. a kind of efficient new generation big data network realization method according to claim 4, is characterized in that, in data C3 is identified by name NA3, mobile device MD4 links to each other with mobile router MR4 link, and mobile router MR4 and access The node AP4 is connected to the link, the access node AP4 is located in the data network DN2, and the proxy router of the data network DN2 is PR2, if the name field value of any index entry of the proxy router PR2 is not equal to NA3, the mobile device MD4 Obtain data C3 through the following process:

Step 501: start;

Step 502: The mobile device MD4 sends a data acquisition message. In the data acquisition message, the name is NA3, the message type is 4, the identifier is 0, the source interface address set and the destination interface address set are empty, and the load is empty; mobile router MR4 After receiving the data acquisition message from the downstream interface, forward the data acquisition message from the upstream interface;

Step 503: After the access node AP4 receives the data acquisition message, it checks the request table. If there is a request table entry, and the name field value of the request table entry is equal to the name of the received data acquisition message, step 520 is executed; otherwise, step 520 is executed. Go to step 504;

Step 504: the access node AP4 creates a request entry, the name field value of the request entry is equal to the name of the received data acquisition message, and the set of interface addresses is equal to the set of source interface addresses of the received data acquisition message; access Node AP4 adds its own geographic coordinates to the source interface address set of the received data acquisition message and this geographic coordinate is used as the first element of the source interface address set, and forwards the received data acquisition message from the upstream interface;

Step 505: Determine whether the proxy router or the data router has received the data acquisition message, if the proxy router receives the data acquisition message, perform step 508, otherwise perform step 506;

Step 506: After the data router receives the data acquisition message, it checks the request table. If there is a request table entry, and the name field value of the request table entry is equal to the name of the received data acquisition message, step 520 is performed, otherwise, step 520 is performed. 507;

Step 507: The data router that received the data acquisition message creates a request entry, the name field value of the request entry is equal to the name of the received data acquisition message, and the interface address set is equal to the source interface of the received data acquisition message Address set; the data router adds its own geographic coordinates to the source interface address set of the received data acquisition message, and the geographic coordinates are used as the first element of the source interface address set, and forwards the received data acquisition from the upstream interface message, go to step 505;

Step 508: After the proxy router receives the data acquisition message, it checks the request table. If there is a request table entry, and the name field value of the request table entry is equal to the name of the received data acquisition message, perform step 520, otherwise, perform step 508. 509;

Step 509: The proxy router that receives the data acquisition message creates a request entry, the name field value of the request entry is equal to the name of the received data acquisition message, and the interface address set is equal to the source interface of the received data acquisition message Address set; the proxy router adds its own geographic coordinates to the source interface address set of the received data acquisition message, and the geographic coordinate is used as the first element of the source interface address set, and forwards the received data acquisition from the upstream interface information;

Step 510: If the core router receives the data acquisition message, execute step 511; if the proxy router, data router or access node receives the data acquisition message, execute step 513;

Step 511: After the core router receives the data acquisition message from an interface, the interface address of the interface is z1, and checks the request table. If there is a request table entry, the name field value of the request table entry is equal to the received data acquisition message. name, go to step 520, otherwise go to step 512;

Step 512: The core router that received the data acquisition message from interface z1 creates a request entry, the name field value of the request entry is equal to the name of the received data acquisition message, and the interface address set is equal to the received data acquisition message The core router adds the interface address z1 to the source interface address set of the received data acquisition message and the interface address is used as the first element of the source interface address set, selects a forwarding entry, the forwarding The geographic coordinate domain value of the published item is equal to the geographic coordinate in the name of the received data acquisition message, and the data acquisition message is forwarded from the interface identified by the interface address of the forwarding item, and step 510 is executed;

Step 513: The proxy router, data router or access node checks the request table, if there is a request table entry, the name field value of the request table entry is equal to the name of the received data acquisition message, then go to step 520, otherwise go to step 514 ;

Step 514: The proxy router, data router or access node that receives the data acquisition message creates a request entry, the name field value of the request entry is equal to the name of the received data acquisition message, and the interface address set is equal to the received data acquisition message. The source interface address set of the data acquisition message; the proxy router, data router or access node looks at the data table, if there is a data table entry, the name field value of the data table entry is equal to the name of the received data acquisition message, then Go to step 516, otherwise go to step 515;

Step 515: The proxy router, data router or access node that receives the data acquisition message selects an index table, the name field value of the index table is equal to the name of the received data acquisition message, and the destination interface address of the data acquisition message The set is updated to the interface address set field value of the index table, select an interface whose interface address is equal to the first element of the destination interface address set of the data acquisition message, and the first element of the data acquisition message destination interface address set The element is added to the source interface address set of the data acquisition message as the first element of the source interface address set, delete the first element from the destination interface address set of the data acquisition message, send the data acquisition message from the selected interface, and execute Step 513;

Step 516: The proxy router, data router or access node that receives the data acquisition message divides the data C3 into u3 data blocks, sets the variable u1, and the initial value of the variable u1 is 0;

Step 517: The proxy router, data router or access node that received the data acquisition message increments the variable u1 by 1, if u1 is less than u3, then executes step 518, otherwise executes step 519;

Step 518: The proxy router, data router or access node that received the data acquisition message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, and the identification field The value is 1, the source interface address set is empty, the destination interface address set is the source interface address set of the received data response message, the load is the u1th data block, and step 517 is executed;

Step 519: The proxy router, data router or access node that received the data response message creates a data response message, the name field value of the data response message is equal to the name of the received data response message, the message type is 5, and the identification field The value is 0, the interface address set is empty, the destination interface address set is the source interface address set of the received data response message, and the load is the u1th data block;

Step 520: The access node, data router, proxy router or core router checks the request table, selects all request table entries whose name field value is equal to the name of the data response message, and for each request table entry, the core router, access node, The data router or proxy router performs the following operations: update the destination interface address set of the data response message to the interface address set of the request entry, if the destination interface address set is empty, forward the data response message from the downstream interface, If the destination interface address set is not empty, select an interface whose interface address is equal to the first element of the destination interface address set, delete the first element from the destination interface address set, and forward the In the data response message, if the value of the identification field of the data response message is 0, delete the request entry, otherwise keep the request entry; if the destination interface address set field of the data response message is empty, execute step 521, otherwise Re-execute step 520;

Step 521: after receiving the data response message, the mobile router MR4 forwards the data response message from the downstream interface; the mobile device MD4 saves the data in the data response message after receiving the data response message;

Step 522: end;