CN106453090B

CN106453090B - A kind of data-centered communication means

Info

Publication number: CN106453090B
Application number: CN201610908307.0A
Authority: CN
Inventors: 王晓喃; 程宏斌
Original assignee: Changshu Institute of Technology
Current assignee: Changshu Institute of Technology
Priority date: 2016-10-19
Filing date: 2016-10-19
Publication date: 2019-01-11
Anticipated expiration: 2036-10-19
Also published as: CN106453090A

Abstract

The present invention provides a kind of data-centered communication means, and the network includes IPv6 backbone network, data-centered subnet and IP subnet, and data-centered subnet is known as data subnet.IP subnet includes couple in router, IP conventional equipment, IP data set provider and IP data consumer；IP subnet is connected to IPv6 backbone network by couple in router；In IP subnet, IP data set provider is can to generate or provide the server or node of a kind of data, supports IP agreement；IP data consumer is the node that authorization can obtain a kind of data, supports IP agreement；IP conventional equipment, for executing route forwarding function, supports IP agreement neither data consumer is also not data set provider；Node can obtain service data from apart from nearest node with mode of unicast, shorten the delay and cost for obtaining service data, improve service quality, and present invention can apply to the fields such as big data acquisition, are with a wide range of applications.

Description

A kind of data-centered communication means

Technical field

The present invention relates to a kind of implementation methods, more particularly to a kind of data-centered communication means.

Background technique

Network has become indispensable a part in human lives, it provides a variety of data services, therefore reduces number It is particularly important according to communication delay.In recent years, many research work are dedicated to the data communication of network, to enable people to Quick obtaining network service.With the development of network technology, the data communication technology of network can further increase service quality.

Currently, the data communication delays and cost of network are all bigger, network service performance is reduced.Therefore, how to drop The delay of the data communication of low network and cost become the hot issue of Recent study.

Summary of the invention

Goal of the invention: the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide one kind with data Centered on communication means.

Technical solution: the invention discloses a kind of data-centered communication means, and the network includes IPv6 backbone Net, data-centered subnet and IP subnet, data-centered subnet are known as data subnet；

IP subnet includes couple in router, IP conventional equipment, IP data set provider and IP data consumer；IP subnet passes through Couple in router is connected to IPv6 backbone network；In IP subnet, IP data set provider is can to generate or provide a kind of data Server or node, support IP agreement；IP data consumer is the node that authorization can obtain a kind of data, such as is had the right Limit checks certain files or the certain programs of program request, supports IP agreement；IP conventional equipment is neither data consumer is also not several IP agreement is supported for executing route forwarding function according to supplier；

Data subnet includes data access router, conventional equipment, data set provider and data consumer；Data access road IP agreement is supported by device, data subnet is connected to IPv6 backbone network by data access router；In data subnet, data are mentioned Donor is can to generate or provide the server or node of certain data, does not support IP agreement；Data consumer is authorization The node of certain data can be obtained, such as has permission and checks certain files or the certain programs of program request, does not support IP agreement；It is general Lead to equipment neither data consumer is also not data set provider, for executing route forwarding function, does not support IP agreement；

In the network, a kind of data by a data name unique definition, a data name by name prefix and Title ID is constituted；In an ip network, an IP address is made of route prefix and interface ID；In the network, a title Prefix is mapped as a route prefix, and a title ID is mapped as an interface ID, and thus a data name can be mapped as One IP address, i.e., the IP address unique definition that a kind of data are mapped by a data name and the data name；Before title Sew and is preset with the mapping relations of route prefix and title ID and the mapping relations of interface ID, each couple in router, number A mapping table is safeguarded according to couple in router, data consumer and data set provider to save mapping relations；Such as name prefix China/Jiangsu/Cslg is mapped as network prefix 3fe8:1ab0:2:1::, title ID N6/402/V1 is mapped as interface ID 1:1:1:1, therefore by data name China/Jiangsu/Cslg/N6/402/V1 data defined while also can by IP Location 3fe8:1ab0:2:1:1:1:1:1 is defined；

The IP address that can be mapped as a kind of data name is known as anycast address, i.e. anycast address defines a kind of data, All data set providers for being capable of providing this kind of data are built into anycast group, and the anycast group is by the anycast address unique identification；

In IP subnet, couple in router or conventional equipment safeguard anycast's routing table, and each list item is by four domains It constitutes: anycast address, next-hop, distance and life cycle；Couple in router, conventional equipment or data set provider maintenance one A anycast's required list, each list item are made of two domains: anycast address and next-hop；

In data subnet, data access router or conventional equipment safeguard a title routing table, each list item by Four domains are constituted: data name, interface, distance and life cycle；Data access router, conventional equipment or data provide It is name request table that person, which safeguards one, and each list item is made of two domains: anycast address and interface.

The above process can effectively realize the fusion of data subnet and IP subnet, to realize data subnet and IP subnet Communication.

It is anycast group membership in IP data set provider P1, which is marked by anycast address A1 in the method for the invention Knowing, anycast address A1 defines data C1, and IP data set provider P1 can generate and provide data C1, and IP data set provider P1 In in IP subnet, the couple in router of the IP subnet is AR1, in the case that the unicast address of IP data set provider P1 is U1, IP After data set provider P1 generates data C1, following processes are executed to issue data C1:

Step 101: starting；

Step 102:IP data set provider P1 sends a data and gives out information, and the destination address of data publication messages is to connect Enter the unicast address of router AR1, source address U1 loads as anycast address A1 and distance parameter dist, distance parameter The initial value of dist is 0；

Step 103: after couple in router or IP conventional equipment receive the data publication messages from upper hop, checking and appoint Routing table is broadcast, if there is anycast address thresholding be A1 and next-hop thresholding is the list item of upper hop unicast address, then is walked Rapid 104, it is no to then follow the steps 105；

Step 104: the couple in router or IP conventional equipment for receiving the data publication messages from upper hop are in anycast A list item is created in routing table, the anycast address domain of the list item is A1, and next-hop thresholding is the unicast address of upper hop, distance Thresholding is the distance parameter dist value in data publication messages, and life cycle thresholding is set as maximum value, such as 30 minutes, is executed Step 106；

Step 105: from upper hop receive the data publication messages couple in router or IP conventional equipment it is more newly appointed It broadcasts that address thresholding is A1 and next-hop thresholding is the list item of upper hop unicast address, i.e., sets several apart from thresholding for the list item According to the distance parameter dist value in giving out information；

Step 106: if receiving the couple in router of the data publication messages from upper hop is AR1, thening follow the steps 109, it is no to then follow the steps 107；

Step 107: the IP conventional equipment for receiving the data publication messages judges to create in step 104 or in step 105 update list items apart from thresholding whether be greater than other all anycast's thresholdings equal to A1 list item apart from thresholding, if so, Step 108 is carried out, step 109 is otherwise carried out；

Step 108: receiving the IP conventional equipments of the data publication messages for the distance parameter in data publication messages Dist is incremented by 1, and source address is updated to the unicast address of oneself, then sends the data publication messages, executes step 103；

Step 109: terminating.

The above process realizes data publication to enable other equipment to obtain data.

In the method for the invention, in data subnet, after data access router startup, following processes are executed to establish Reach the routing of oneself:

Step 201: starting；

Step 202: data access router sends router from each interface of oneself and gives out information；

Step 203: conventional equipment, data set provider or data consumer receive the data access from the interface f of oneself After router gives out information, saving interface f, interface f are conventional equipment, data set provider or data consumer and data access The connected interface of router；

Step 204: whether what judgement received that the data access router gives out information is conventional equipment, if it is executing step Rapid 205, it is no to then follow the steps 206；

Step 205: receiving conventional equipment that the router gives out information from addition to receive that router gives out information connects Total interface publication router other than mouthful gives out information, and executes step 203；

Step 206: terminating.

In the method for the invention, data C3 can be generated and provide in data set provider P4, data C3 is by data name N3 definition, data set provider P4 are located in data subnet, in the case that the data access router of the data subnet is CAR3, number After generating data C3 according to supplier P4, following processes are executed to issue data C3:

Step 301: starting；

Step 302: data set provider P4 constructs a data name and gives out information, the load which gives out information For data name N3 and distance parameter dist, the initial value of distance parameter dist is 0, then from arrival couple in router CAR3 Interface send the data name and give out information；

Step 303: data access router or conventional equipment receive after the data name gives out information from interface f ', Check title routing table, the list item that if there is data name thresholding be N3 and interface thresholding is f ' then carries out step 304, no Then follow the steps 305；

Step 304: from interface f ' the data access router for receiving data publication messages or conventional equipment in title A list item is created in routing table, it is data name hair apart from thresholding that the data name domain of the list item, which is N3, and interface thresholding is f ' Distance parameter dist value in cloth message, life cycle thresholding are set as maximum value, such as 30 minutes, execute step 306；

Step 305: receiving the data access router of the data publication messages from interface f ' or conventional equipment updates Data name thresholding is N3 and interface thresholding is f ' list item sets data name publication apart from thresholding for the list item and disappears Distance parameter dist value in breath；

Step 306: judgement receives whether the data access router that the data name gives out information is data access road It is to then follow the steps 309 by device CAR3, it is no to then follow the steps 307；

Step 307: the conventional equipment for receiving the data publication messages judges to create in step 304 or in step 305 The list item of update apart from thresholding whether be greater than other all data name thresholdings equal to N3 list item apart from thresholding, if It is to carry out step 308, otherwise carries out step 309；

Step 308: receive conventional equipment that the data name gives out information by data name give out information in distance Parameter dist is incremented by 1, then sends the message from the interface for reaching couple in router CAR3, executes step 303；

Step 309: terminating.

In the method for the invention, it is located at IP subnet in the S1 of IP data consumption, the couple in router of the IP subnet is AR1, in the case that data C2 is defined by anycast address A2, if at least one is capable of providing data in identical IP subnet The IP data set provider of C2, then IP data consumer S1 can obtain data C2 by following processes:

Step 401: starting；

Step 402:IP data consumer S1 constructs data request information, and the destination address of the data request information is anycast Address A2, source address are the unicast address of oneself, and then IP data consumer S1 sends arrival for the data request information and connects Enter the next-hop of router AR1；

Step 403: receiving the request of data from upper hop H1 if it is the anycast address A2 anycast group membership identified and disappear Breath, H1 are that variable for recording the IP address of upper hop then carries out step 404, otherwise carry out step 407；

Step 404: anycast group membership checks anycast's required list, and judging whether there is anycast address thresholding is A2 and next-hop Thresholding is the list item of H1, if so, carrying out step 406, otherwise carries out step 405；

Step 405: anycast group membership is in office to broadcast one list item of creation in required list, and the anycast address of the list item is A2, under One jumps as H1；

Step 406: anycast group membership constructs a data response message, and the source address of the data response message is A2, mesh Address be data consumer S1 unicast address, load as data C2, then execute step 415；

After step 407:IP conventional equipment or couple in router AR1 receive the data request information from upper hop H2, H2 is variate-value, for recording the IP address of upper hop, checks anycast's required list, judges whether there is the table that anycast address is A2 , if it is, carrying out step 408, otherwise carry out step 410；

It is A2 and next hop domain that step 408:IP conventional equipment or couple in router AR1, which judge whether there is anycast address, Value is the list item of H2, if so, carrying out step 415, otherwise carries out step 409；

Step 409:IP conventional equipment or couple in router AR1 create a list item, the list item in anycast's required list Anycast address be A2, next-hop H2, then execute step 415；

Step 410:IP conventional equipment or couple in router AR1 create a list item, the list item in anycast's required list Anycast address be A2, next-hop H2；

Step 411: judging whether it is couple in router AR1 and receive data request information, if it is, carrying out step 414, otherwise carry out step 412；

Step 412:IP conventional equipment checks anycast's routing table, judges whether there is the list item that anycast address thresholding is A2, If so, then carrying out step 414, step 413 is otherwise carried out；

Data request information is sent the next-hop for reaching couple in router AR1 by step 413:IP conventional equipment, is executed Step 403；

Data request information is forwarded to anycast address thresholding and is by step 414:IP conventional equipment or couple in router AR1 The next-hop of the list item of A2 executes step 403；

After step 415:IP conventional equipment or couple in router AR1 are created or received data response message, check Anycast's required list is equal to each anycast address the list item of A2, and IP conventional equipment or couple in router AR1 respond data The destination address of message is updated to the next-hop thresholding of the list item, then forwards the data response message, while requesting from anycast The list item is deleted in table；

Step 416: judging whether it is that IP data consumer S1 receives data response message, if so, carrying out step 417, otherwise carry out step 415；

Step 417:IP data consumer S1 saves the data C2 in data response message；

Step 418: terminating.

By the above process, data consumer being capable of quick obtaining data.

In the method for the invention, it is located in data subnet in data consumer S3, the data access road of the data subnet It is CAR4 by device, in the case that data C4 is defined by data name N4, if at least one can be mentioned in the data subnet For the data set provider of data C4, then data consumer S3 can obtain data C4 by following processes:

Step 501: starting；

Step 502: data consumer S3 constructs data name request message, the data name of the data name request message For N4, the data name request message then is sent from the interface for reaching data access router CAR4；

Step 503: receive the data name request message from interface f2 if it is the data set provider of data C4, then into Otherwise row step 504 carries out step 507；

Step 504: data set provider checks name request table, judges whether there is that data name is N4 and interface domain is f2 List item, if so, carry out step 506, otherwise carry out step 505；

Step 505: data set provider creates a list item in name request table, and the data name domain of the list item is N4, Interface thresholding is f2；

Step 506: data set provider constructs a data name response message, and the load of the data name response message is Data C4 executes step 515；

Step 507: conventional equipment or data access router CAR4 receive data name request from interface f3 and disappear After breath, name request table is checked, judge whether there is the list item that data name is N4, if it is, carrying out step 508, otherwise Carry out step 510；

Step 508: conventional equipment or data access router CAR4 judge whether there is data name as N4 and interface Thresholding is the list item of f3, if so, carrying out step 515, otherwise carries out step 509；

Step 509: conventional equipment or data access router CAR4 create a list item, the table in name request table The data name of item is N4, and interface thresholding is f3, then executes step 515；

Step 510: conventional equipment or data access router CAR4 create a list item, the table in name request table The data name thresholding of item is N4, and interface thresholding is f3；

Step 511: judge whether it is data access router CAR4 and receives data name request message, if it is, Step 514 is carried out, step 512 is otherwise carried out；

Step 512: conventional equipment checks title routing table, judges whether there is the list item that Numeral name thresholding is N4, such as Fruit has, then carries out step 514, otherwise carries out step 513；

Step 513: conventional equipment sends data name request message from the interface for reaching data access router CAR4, holds Row step 503；

Step 514: the interface of conventional equipment or data access router CAR4 from the list item that data name thresholding is N4 Thresholding forwards the data name request message, executes step 503；

Step 515: conventional equipment or data access router CAR4 creation receive data name response message Afterwards, it checks name request table, the list item of N4, conventional equipment or data access router is equal to for each data name thresholding CAR4 forwards the data name response message from the interface domain of the list item, while the list item is deleted from name request table；

Step 516: judging whether it is that data consumer S3 receives data name response message, if so, carrying out step 517, otherwise carry out step 515；

Step 517: data consumer S3 saves the data C4 in data name response message；

Step 518: terminating.

By the above process, data consumer being capable of quick obtaining data.

In the method for the invention, it is located at IP subnet in IP data consumer S1, the couple in router of the IP subnet is AR1, data C3 are defined by anycast address A3 or data name N3, and the name prefix of data name N3 is NP3, what NP3 was defined In the case that the data access router of data subnet is CAR3, if not being capable of providing the IP of data C3 in the IP subnet Data set provider, then IP data consumer S1 obtains data C3 by following processes:

Step 601: starting；

Step 602:IP data consumer S1 constructs data request information, which is to appoint Address A3 is broadcast, source address is the unicast address of oneself, and then this is built data request information and is sent to by IP data consumer S1 Up to the next-hop of couple in router AR1；

After step 603:IP conventional equipment or couple in router AR1 receive the data request information from upper hop H3, Check anycast's required list, the list item for being A3 if there is anycast address then carries out step 604, otherwise carries out step 606；

Step 604:IP conventional equipment or couple in router AR1 check anycast's required list, with judging whether there is anycast Otherwise the list item that location is A3 and next-hop is H3 carries out step 605 if so, carrying out step 618；

Step 605:IP conventional equipment or couple in router AR1 create a list item, the list item in anycast's required list Anycast address be A3, next-hop H3, execute step 618；

Step 606:IP conventional equipment or couple in router AR1 create a list item, the list item in anycast's required list Anycast address be A3, next-hop H3, judge whether it is couple in router AR1 and receive data request information, if it is, Step 608 is executed, it is no to then follow the steps 607；

Data request information is forwarded to the next-hop for reaching couple in router AR1 by step 607:IP conventional equipment, is executed Step 603；

Step 608: data request information is forwarded to and reaches the next of data access router CAR4 by couple in router AR1 It jumps；

Step 609: intermediate Access Routers, intermediate data couple in router or data access router CAR3 are from upper one After jump HAR receives data request information, anycast's routing table is checked, the list item for being A4 if there is anycast address thens follow the steps 610, it is no to then follow the steps 612；

Step 610: intermediate Access Routers, intermediate data couple in router or data access router CAR3, which are checked, to be appointed Required list is broadcast, the list item that anycast address is A4 and next-hop is HAR is judged whether there is, if it does, step 618 is executed, it is no Then follow the steps 611；

Step 611: intermediate Access Routers, intermediate data couple in router or data access router CAR3 are in anycast A list item, anycast address A4 are built in required list, next-hop thresholding is HAR, then executes step 618；

Step 612: intermediate Access Routers, intermediate data couple in router or data access router CAR3 are in anycast A list item, anycast address A4 are built in required list, next-hop thresholding is HAR；

Step 613: judging whether it is data access router CAR3 and receive data request information, if it is, executing Step 616, no to then follow the steps 614；

Step 614: intermediate Access Routers or intermediate data couple in router check anycast's routing table or name road By table, the list item that anycast's thresholding is A3 or data name thresholding is N3 is judged whether there is, if it is present executing step 616, it is no to then follow the steps 615；

Step 615: data request information is forwarded to arrival by intermediate Access Routers or intermediate data couple in router The next-hop of data access router CAR4 executes step 609；

Step 616: if it is the list item of A3 that anycast's routing table of intermediate Access Routers, which has anycast's thresholding, intermediate access Router executes step 401~418 as data consumer and obtains data C3, if intermediate data couple in router or data It is the list item of N3 that the title routing table of couple in router CAR3, which has data name thresholding, then intermediate data couple in router or number 501~518, which are executed, as data consumer according to couple in router CAR3 obtains data C3；

Step 617: intermediate Access Routers, intermediate data couple in router or data access router CAR3 obtain number After C3, a data response message is created, the source address of the data response message is A3, and destination address is IP data consumer The unicast address of S1 loads as data C3；

Step 618: intermediate Access Routers, intermediate data couple in router, data access router CAR3, access routing After device AR1 or IP conventional equipment creates or receives data response message, anycast's required list is checked, for each anycast Location is equal to the list item of A3, intermediate Access Routers, intermediate data couple in router, data access router CAR3, access routing The destination address of data response message is updated to the next-hop thresholding of the list item by device AR1 or conventional equipment, and then forwarding should Data response message, while the list item is deleted from anycast's required list；

Step 619: judging whether it is that IP data consumer S1 receives data response message, if so, carrying out step 620, otherwise carry out step 618；

Step 620:IP data consumer S1 saves the data C2 in data response message；

Step 621: terminating.

The above process realizes the fusion and communication of IP subnet and data subnet, so that data consumer being capable of quick obtaining Teledata.

In the method for the invention, it is located in data subnet in data consumer S3, the data access road of the data subnet It is CAR3 by device, data C2 is defined by anycast address A2 or data name N2, the IP that the network prefix of anycast address A2 defines The couple in router of subnet is AR2, if not being capable of providing data C2's in the data subnet where data consumer S3 Data set provider, then data consumer S3 obtains data C2 by following processes:

Step 701: starting；

Step 702: data consumer S3 constructs data name request message, the data name of the data name request message For N2, the data name request message then is sent from the interface for reaching data access router CAR3；

Step 703: conventional equipment or data access router CAR3 receive data name request from interface f4 and disappear After breath, name requests table is checked, the list item for being N2 if there is data name thresholding then carries out step 704, otherwise carries out step 706；

Step 704: conventional equipment or data access router CAR3 check name request table, judge whether there is data Otherwise the list item that entitled N2 and interface thresholding are f4 carries out step 705 if so, carrying out step 718；

Step 705: conventional equipment or data access router CAR3 create a list item, the table in name request table The data name of item is N2, and interface thresholding is f4, executes step 718；

Step 706: conventional equipment or data access router CAR3 create a list item, the table in name request table The data name thresholding of item is N2, and interface thresholding is f4, then judges whether it is data access router CAR3 and receives data Name request message, if so, 708 are thened follow the steps, it is no to then follow the steps 707；

Step 707: conventional equipment forwards data name request message from the interface for reaching data access router CAR3, holds Row step 703；

Step 708: data access router CAR3 sends a data request message, the source address of the data request information For its unicast address, destination address is anycast address A2；

Step 709: intermediate Access Routers, intermediate data couple in router or couple in router AR2 are from upper hop After HAR1 receives data request information, anycast's routing table is checked, the list item for being A2 if there is anycast address thens follow the steps 710, it is no to then follow the steps 712；

Step 710: intermediate Access Routers, intermediate data couple in router or couple in router AR2 check that anycast ask Table is sought, the list item that anycast address is A2 and next-hop is HAR1 is judged whether there is, if it does, executing step 718, is otherwise held Row step 711；

Step 711: intermediate Access Routers, intermediate data couple in router or couple in router AR2 are requested in anycast A list item, anycast address A2 are built in table, next-hop thresholding is HAR1, then executes step 718；

Step 712: intermediate Access Routers, intermediate data couple in router or couple in router AR2 are requested in anycast A list item, anycast address A2 are built in table, next-hop thresholding is HAR1；

Step 713: judging whether it is couple in router AR2 and receive data request information, if so, thening follow the steps 716, it is no to then follow the steps 714；

Step 714: intermediate Access Routers or intermediate data couple in router check anycast's routing table or name road By table, the list item that anycast's thresholding is A2 or data name thresholding is N2 is judged whether there is, if it is present executing step 716, it is no to then follow the steps 715；

Step 715: data request information is forwarded to arrival by intermediate Access Routers or intermediate data couple in router The next-hop of couple in router AR2 executes step 709；

Step 716: if it is A2 that anycast's routing table of intermediate Access Routers or couple in router AR2, which have anycast's thresholding, List item, then intermediate Access Routers are made or couple in router AR2 is that data consumer executes step 401~418 and obtains numbers According to C2, if it is the list item of N2 that the title routing table of intermediate data couple in router, which has data name thresholding, intermediate data is connect Enter router as data consumer and executes 501~518 acquisition data C2；

Step 717: intermediate Access Routers, intermediate data couple in router or couple in router AR2 obtain data C2 Afterwards, a data response message is created, the source address of the data response message is A2, and destination address is the list of data consumer S1 Address is broadcast, is loaded as data C2；

Step 718: intermediate Access Routers, intermediate data couple in router, data access router CAR3, access routing After device AR1 is created or received data response message, anycast's required list is checked, the table of A2 is equal to for each anycast address , intermediate Access Routers, intermediate data couple in router, data access router CAR3, couple in router AR1 ring data It answers the destination address of message to be updated to the next-hop thresholding of the list item, then forwards the data response message, while asking from anycast It asks and deletes the list item in table；

Step 719: judging whether it is that data access router CAR3 receives data response message, if so, being walked Rapid 720, otherwise carry out step 718；

Step 720: data access router CAR3 constructs a data name response message, the data name response message Load be data C2；

Step 721: conventional equipment or data access router CAR3 creation receive data name response message Afterwards, it checks name request table, the list item of N2, conventional equipment or data access router is equal to for each data name thresholding CAR3 forwards the data name response message from the interface domain of the list item, while the list item is deleted from name request table；

Step 722: judging whether it is that data consumer S3 receives data name response message, if so, carrying out step 723, otherwise carry out step 721；

Step 723: data consumer S3 saves the data C2 in data name response message；

Step 724: terminating.

The utility model has the advantages that the present invention provides a kind of data-centered communication means, node is provided through the invention Communication means can from apart from nearest node with mode of unicast obtain service data, shorten obtain service data delay And cost, service quality is improved, present invention can apply to the fields such as big data acquisition, are with a wide range of applications.

Detailed description of the invention

The present invention is done with reference to the accompanying drawings and detailed description and is further illustrated, of the invention is above-mentioned And/or otherwise advantage will become apparent.

Fig. 1 is network architecture schematic diagram of the present invention.

Fig. 2 is that IP data set provider of the present invention issues data flow diagram.

Fig. 3 is the flow diagram of the present invention for establishing routing.

Fig. 4 is that data set provider of the present invention issues data flow diagram.

Fig. 5 is that IP data consumer of the present invention obtains data flow diagram.

Fig. 6 is that data consumer of the present invention obtains data flow diagram.

Fig. 7 is that IP data consumer of the present invention obtains teledata flow diagram.

Fig. 8 is that data consumer of the present invention obtains teledata flow diagram.

Specific embodiment:

The present invention provides a kind of data-centered communication means, node through the invention provided by communication means Service data can be obtained with mode of unicast from apart from nearest node, shorten the delay and cost for obtaining service data, mention High service quality, present invention can apply to big datas the fields such as to obtain, and be with a wide range of applications.

Fig. 1 is network architecture schematic diagram of the present invention.The network includes IPv6 backbone network 1, with data is The subnet and IP subnet 2 at center, data-centered subnet are known as data subnet 3.

Fig. 2 is that IP data set provider of the present invention issues data flow diagram.IP subnet includes couple in router, IP conventional equipment, IP data set provider and IP data consumer；IP subnet is connected to IPv6 backbone network by couple in router；? In IP subnet, IP data set provider is can to generate or provide the server or node of a kind of data, supports IP agreement；IP Data consumer is the node that authorization can obtain a kind of data, such as has permission and check certain files or the certain sections of program request Mesh supports IP agreement；IP conventional equipment is neither data consumer is also not data set provider, for executing routing forwarding function Can, support IP agreement；

Step 101: starting；

Step 109: terminating.

Fig. 3 is the flow diagram of the present invention for establishing routing.In data subnet, data access router startup Afterwards, following processes are executed to be established to the routing of oneself:

Step 201: starting；

Step 206: terminating.

Fig. 4 is that data set provider of the present invention issues data flow diagram.It can be generated in data set provider P4 It is defined with offer data C3, data C3 by data name N3, data set provider P4 is located in data subnet, the number of the data subnet In the case where being CAR3 according to couple in router, after data set provider P4 generates data C3, following processes are executed to issue data C3:

Step 301: starting；

Step 309: terminating.

Fig. 5 is that IP data consumer of the present invention obtains data flow diagram.It is located in the S1 of IP data consumption The couple in router of IP subnet, the IP subnet is AR1, in the case that data C2 is defined by anycast address A2, if identical At least one is capable of providing the IP data set provider of data C2 in IP subnet, then IP data consumer S1 can pass through following mistakes Journey obtains data C2:

Step 401: starting；

Step 403: receiving the request of data from upper hop H1 if it is the anycast address A2 anycast group membership identified and disappear Breath, then carry out step 404, otherwise carries out step 407；H1 is a variable, for recording the IP address of upper hop；

Step 405: anycast group membership is in office to broadcast one list item of creation in required list, and the anycast address of the list item is A2, under One jumps as H1；Carry out step 406；

Step 417:IP data consumer S1 saves the data C2 in data response message；

Step 418: terminating.

By the above process, data consumer being capable of quick obtaining data.

Fig. 6 is that data consumer of the present invention obtains data flow diagram.It is located at data in data consumer S3 In subnet, the data access router of the data subnet is CAR4, in the case that data C4 is defined by data name N4, if At least one is capable of providing the data set provider of data C4 in the data subnet, then data consumer S3 can pass through following mistakes Journey obtains data C4:

Step 501: starting；

Step 505: data set provider creates a list item in name request table, and the data name domain of the list item is N4, Interface thresholding is f2；Execute step 506；

Step 517: data consumer S3 saves the data C4 in data name response message；

Step 518: terminating.

By the above process, data consumer being capable of quick obtaining data.

Fig. 7 is that IP data consumer of the present invention obtains teledata flow diagram.In IP data consumer S1 Positioned at IP subnet, the couple in router of the IP subnet is AR1, and data C3 is defined by anycast address A3 or data name N3, number Name prefix according to title N3 is NP3, in the case that the data access router for the data subnet that NP3 is defined is CAR3, if The IP data set provider of data C3 is not capable of providing in the IP subnet, then IP data consumer S1 is obtained by following processes Data C3:

Step 601: starting；

Step 620:IP data consumer S1 saves the data C2 in data response message；

Step 621: terminating.

Fig. 8 is that data consumer of the present invention obtains teledata flow diagram.It is located in data consumer S3 In data subnet, the data access router of the data subnet is CAR3, and data C2 is by anycast address A2 or data name N2 The couple in router of definition, the IP subnet that the network prefix of anycast address A2 defines is AR2, if where data consumer S3 Data subnet in be not capable of providing the data set provider of data C2, then data consumer S3 passes through following processes and obtains data C2:

Step 701: starting；

Step 723: data consumer S3 saves the data C2 in data name response message；

Step 724: terminating.

Embodiment 1

Based on the simulation parameter of table 1, the present embodiment simulates communication means data-centered in the present invention, performance point Analyse as follows: when node obtains data from local subnet, data communication delays and cost are smaller, when node is obtained from remote subnetwork When taking network, data communication delays and cost are bigger.When node obtains data from local subnet, the flat of service data is obtained Delay is 40ms, average cost 7.When node obtains network from remote subnetwork, the average retardation for obtaining service data is 70ms, average cost 12.

1 simulation parameter of table

The present invention provides a kind of thinking of data-centered communication means, the method for implementing the technical solution It is many with approach, the above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill of the art For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.The available prior art of each component part being not known in the present embodiment is realized.

Claims

1. a kind of data-centered communication means, which is characterized in that network includes IPv6 backbone network, data-centered Subnet and IP subnet, data-centered subnet are known as data subnet；

IP subnet includes couple in router, IP conventional equipment, IP data set provider and IP data consumer；IP subnet passes through access Router is connected to IPv6 backbone network；In IP subnet, IP data set provider is can to generate or provide a kind of clothes of data Business device or node support IP agreement；IP data consumer is the node that authorization can obtain a kind of data, supports IP agreement； IP conventional equipment, for executing route forwarding function, supports IP agreement neither data consumer is also not data set provider；

Data subnet includes data access router, conventional equipment, data set provider and data consumer；Data access router Support IP agreement, data subnet is connected to IPv6 backbone network by data access router；In data subnet, data set provider It is that can generate or provide the server or node of certain data, does not support IP agreement；Data consumer is that authorization can The node for obtaining certain data, does not support IP agreement；Conventional equipment is used for neither data consumer is also not data set provider Route forwarding function is executed, does not support IP agreement；

In the network, a kind of data are by a data name unique definition, and a data name is by name prefix and title ID is constituted；In an ip network, an IP address is made of route prefix and interface ID；In the network, a name prefix It is mapped as a route prefix, a title ID is mapped as an interface ID, and thus a data name can be mapped as one IP address, i.e., the IP address unique definition that a kind of data are mapped by a data name and the data name；Name prefix with The mapping relations and title ID and the mapping relations of interface ID of route prefix are preset, and each couple in router, data connect Enter router, data consumer and data set provider and safeguards a mapping table to save mapping relations；

The IP address that can be mapped as a kind of data name is known as anycast address, i.e. anycast address defines a kind of data, can All data set providers for providing this kind of data are built into anycast group, and the anycast group is by the anycast address unique identification；

In IP subnet, couple in router or conventional equipment safeguard anycast's routing table, and each list item is made of four domains: Anycast address, next-hop, distance and life cycle；Couple in router, conventional equipment or data set provider safeguard that one is appointed Required list is broadcast, each list item is made of two domains: anycast address and next-hop；

In data subnet, data access router or conventional equipment safeguard a title routing table, and each list item is by four Domain is constituted: data name, interface, distance and life cycle；Data access router, conventional equipment or data set provider dimension A name request table is protected, each list item is made of two domains: anycast address and interface；

It is anycast group membership in IP data set provider P1, which is identified by anycast address A1, and anycast address A1 defines number According to C1, IP data set provider P1 can generate and provide data C1, and IP data set provider P1 is located in IP subnet, the IP subnet Couple in router is AR1, and in the case that the unicast address of IP data set provider P1 is U1, IP data set provider P1 generates data C1 Afterwards, following processes are executed to issue data C1:

Step 101: starting；

Step 102:IP data set provider P1 sends a data and gives out information, and the destination address of data publication messages is access road By the unicast address of device AR1, source address U1 is loaded as anycast address A1 and distance parameter dist, distance parameter dist's Initial value is 0；

Step 103: after couple in router or IP conventional equipment receive the data publication messages from upper hop, checking anycast road By table, if there is anycast address thresholding be A1 and next-hop thresholding is the list item of upper hop unicast address, then carries out step 105, it is no to then follow the steps 104；

Step 104: the couple in router or IP conventional equipment for receiving the data publication messages from upper hop are in anycast's routing A list item is created in table, the anycast address domain of the list item is A1, and next-hop thresholding is the unicast address of upper hop, apart from thresholding For the distance parameter dist value in data publication messages, life cycle thresholding is set as maximum value, executes step 106；

Step 105: receiving the couple in router of the data publication messages or IP conventional equipment with updating anycast from upper hop Location thresholding is A1 and next-hop thresholding is the list item of upper hop unicast address, i.e., sets data hair apart from thresholding for the list item Distance parameter dist value in cloth message；

Step 106: if receiving the couple in router of the data publication messages from upper hop is AR1,109 are thened follow the steps, It is no to then follow the steps 107；

Step 107: receive the data publication messages IP conventional equipment judge step 104 create or step 105 more New list item apart from thresholding whether be greater than list item of other all anycast's thresholdings equal to A1 apart from thresholding, if so, carrying out Step 108, step 109 is otherwise carried out；

Step 108: the IP conventional equipment for receiving the data publication messages passs the distance parameter dist in data publication messages Increase 1, source address is updated to the unicast address of oneself, then send the data publication messages, executes step 103；

Step 109: terminating；

In data subnet, after data access router startup, following processes are executed to be established to the routing of oneself:

Step 201: starting；

Step 203: conventional equipment, data set provider or data consumer receive data access routing from the interface f of oneself After device gives out information, saving interface f；

Step 204: whether what judgement received that the data access router gives out information is conventional equipment, if it is executing step 205, it is no to then follow the steps 206；

Step 205: receive conventional equipment that the router gives out information from addition to receive the interface that router gives out information with Outer total interface publication router gives out information, and executes step 203；

Step 206: terminating；

Data C3 can be generated and provide in data set provider P4, data C3 is defined by data name N3, and data set provider P4 In in data subnet, in the case that the data access router of the data subnet is CAR3, data set provider P4 generates data C3 Afterwards, following processes are executed to issue data C3:

Step 301: starting；

Step 302: data set provider P4 constructs a data name and gives out information, and the load which gives out information is number According to title N3 and distance parameter dist, the initial value of distance parameter dist is 0, then connecing from arrival couple in router CAR3 Mouth sends the data name and gives out information；

Step 303: data access router or conventional equipment receive after the data name gives out information from interface f ', check Title routing table, the list item that if there is data name thresholding be N3 and interface thresholding is f ', then carry out step 305, otherwise hold Row step 304；

Step 304: from interface f ' the data access router for receiving data publication messages or conventional equipment in title routing A list item is created in table, the data name domain of the list item is N3, and interface thresholding is f ', is that data name publication disappears apart from thresholding Distance parameter dist value in breath, life cycle thresholding are set as maximum value, execute step 306；

Step 305: the data access router or conventional equipment more new data of the data publication messages are received from interface f ' Title thresholding is N3 and interface thresholding is f ' list item sets the list item to during data name gives out information apart from thresholding Distance parameter dist value；

Step 306: judgement receives whether the data access router that the data name gives out information is data access router CAR3 is to then follow the steps 309, no to then follow the steps 307；

Step 307: the conventional equipment for receiving the data publication messages judges to create in step 304 or update in step 305 List item apart from thresholding whether be greater than other all data name thresholdings equal to N3 list item apart from thresholding, if so, into Otherwise row step 308 carries out step 309；

Step 309: terminating；

It is located at IP subnet in IP data consumer S1, the couple in router of the IP subnet is AR1, and data C2 is determined by anycast address A2 In the case where justice, if the IP data set provider that at least one is capable of providing data C2 in identical IP subnet, IP number According to consumer S1 data C2 can be obtained by following processes:

Step 401: starting；

Step 402:IP data consumer S1 constructs data request information, and the destination address of the data request information is anycast address A2, source address are the unicast address of oneself, and then the data request information is sent arrival access road by IP data consumer S1 By the next-hop of device AR1；

Step 403: receiving the data request information from upper hop H1 if it is the anycast group membership of anycast address A2 mark, then Step 404 is carried out, step 407 is otherwise carried out；

Step 404: anycast group membership checks anycast's required list, and judging whether there is anycast address thresholding is A2 and next-hop thresholding Step 405 is otherwise carried out if so, carrying out step 406 for the list item of H1；

Step 405: anycast group membership is in office to broadcast one list item of creation in required list, and the anycast address of the list item is A2, next-hop For H1；

Step 406: anycast group membership constructs a data response message, and the source address of the data response message is A2, destination Location is the unicast address of data consumer S1, is loaded as data C2, and step 415 is then executed；

After step 407:IP conventional equipment or couple in router AR1 receive the data request information from upper hop H2, check Anycast's required list judges whether there is the list item that anycast address is A2 and otherwise carries out step if it is, carrying out step 408 410；

Step 408:IP conventional equipment or couple in router AR1 judge whether there is that anycast address is A2 and next-hop thresholding is Otherwise the list item of H2 carries out step 409 if so, carrying out step 415；

Step 409:IP conventional equipment or couple in router AR1 create a list item in anycast's required list, which appoints Broadcasting address is A2, next-hop H2, then executes step 415；

Step 410:IP conventional equipment or couple in router AR1 create a list item in anycast's required list, which appoints Broadcasting address is A2, next-hop H2；

Step 411: judge whether it is couple in router AR1 and receives data request information, if it is, step 414 is carried out, it is no Then carry out step 412；

Step 412:IP conventional equipment checks anycast's routing table, judges whether there is the list item that anycast address thresholding is A2, if Have, then carry out step 414, otherwise carries out step 413；

Data request information is sent the next-hop for reaching couple in router AR1 by step 413:IP conventional equipment, executes step 403；

It is A2's that data request information is forwarded to anycast address thresholding by step 414:IP conventional equipment or couple in router AR1 The next-hop of list item executes step 403；

After step 415:IP conventional equipment or couple in router AR1 are created or received data response message, anycast are checked Required list is equal to each anycast address the list item of A2, IP conventional equipment or couple in router AR1 for data response message Destination address be updated to the next-hop thresholding of the list item, then forward the data response message, while from anycast's required list Delete the list item；

Step 416: judging whether it is that IP data consumer S1 receives data response message, if so, progress step 417, no Then carry out step 415；

Step 417:IP data consumer S1 saves the data C2 in data response message；

Step 418: terminating.

2. the data-centered communication means of one kind according to claim 1, which is characterized in that in data consumer S3 In data subnet, the case where data access router of the data subnet is CAR4, and data C4 is defined by data name N4 Under, if at least one is capable of providing the data set provider of data C4 in the data subnet, data consumer S3 can Data C4 is obtained by following processes:

Step 501: starting；

Step 502: data consumer S3 constructs data name request message, and the data name of the data name request message is Then N4 sends the data name request message from the interface for reaching data access router CAR4；

Step 503: receiving the data name request message from interface f2 if it is the data set provider of data C4, then walked Rapid 504, otherwise carry out step 507；

Step 504: data set provider checks name request table, judges whether there is the table that data name is N4 and interface domain is f2 , if so, carrying out step 506, otherwise carry out step 505；

Step 507: after conventional equipment or data access router CAR4 receive the data name request message from interface f3, It checks name request table, judges whether there is the list item that data name is N4 and otherwise walked if it is, carrying out step 508 Rapid 510；

Step 508: conventional equipment or data access router CAR4 judge whether there is data name as N4 and interface thresholding Step 509 is otherwise carried out if so, carrying out step 515 for the list item of f3；

Step 509: conventional equipment or data access router CAR4 create a list item in name request table, the list item Data name is N4, and interface thresholding is f3, then executes step 515；

Step 510: conventional equipment or data access router CAR4 create a list item in name request table, the list item Data name thresholding is N4, and interface thresholding is f3；

Step 511: judging whether it is data access router CAR4 and receive data name request message, if it is, carrying out Step 514, step 512 is otherwise carried out；

Step 512: conventional equipment checks title routing table, judges whether there is the list item that Numeral name thresholding is N4, if so, Step 514 is then carried out, step 513 is otherwise carried out；

Step 513: conventional equipment sends data name request message from the interface for reaching data access router CAR4, executes step Rapid 503；

Step 514: the interface thresholding of conventional equipment or data access router CAR4 from the list item that data name thresholding is N4 The data name request message is forwarded, step 503 is executed；

Step 515: conventional equipment or data access router CAR4 creation or after receiving data name response message are looked into It sees name request table, the list item of N4, conventional equipment or data access router CAR4 is equal to for each data name thresholding The data name response message is forwarded from the interface domain of the list item, while deleting the list item from name request table；

Step 516: judge whether to be that data consumer S3 receives data name response message, if so, step 517 is carried out, Otherwise step 515 is carried out；

Step 517: data consumer S3 saves the data C4 in data name response message；

Step 518: terminating.

3. the data-centered communication means of one kind according to claim 2, which is characterized in that in IP data consumer S1 is located at IP subnet, and the couple in router of the IP subnet is AR1, and data C3 is defined by anycast address A3 or data name N3, The name prefix of data name N3 is NP3, in the case that the data access router for the data subnet that NP3 is defined is CAR3, such as Fruit is not capable of providing the IP data set provider of data C3 in the IP subnet, then IP data consumer S1 is obtained by following processes Access is according to C3:

Step 601: starting；

Step 602:IP data consumer S1 constructs data request information, this builds the destination address of data request information for anycast Location A3, source address are oneself unicast address, and then this is built data request information and is sent to arrival by IP data consumer S1 connects Enter the next-hop of router AR1；

After step 603:IP conventional equipment or couple in router AR1 receive the data request information from upper hop H3, check Anycast's required list, the list item for being A3 if there is anycast address, then carry out step 604, otherwise carries out step 606；

Step 604:IP conventional equipment or couple in router AR1 check anycast's required list, judge whether there is anycast address and are Otherwise the list item that A3 and next-hop are H3 carries out step 605 if so, carrying out step 618；

Step 605:IP conventional equipment or couple in router AR1 create a list item in anycast's required list, which appoints Broadcasting address is A3, next-hop H3, executes step 618；

Step 606:IP conventional equipment or couple in router AR1 create a list item in anycast's required list, which appoints Broadcasting address is A3, next-hop H3, judges whether it is couple in router AR1 and receives data request information, if it is, executing Step 608, no to then follow the steps 607；

Data request information is forwarded to the next-hop for reaching couple in router AR1 by step 607:IP conventional equipment, executes step 603；

Step 608: data request information is forwarded to the next-hop for reaching data access router CAR4 by couple in router AR1；

Step 609: intermediate Access Routers, intermediate data couple in router or data access router CAR3 are from upper hop After HAR receives data request information, anycast's routing table is checked, the list item for being A4 if there is anycast address thens follow the steps 610, it is no to then follow the steps 612；

Step 610: intermediate Access Routers, intermediate data couple in router or data access router CAR3 check that anycast ask Table is sought, the list item that anycast address is A4 and next-hop is HAR is judged whether there is, if it does, executing step 618, is otherwise held Row step 611；

Step 611: intermediate Access Routers, intermediate data couple in router or data access router CAR3 are requested in anycast A list item, anycast address A4 are built in table, next-hop thresholding is HAR, then executes step 618；

Step 612: intermediate Access Routers, intermediate data couple in router or data access router CAR3 are requested in anycast A list item, anycast address A4 are built in table, next-hop thresholding is HAR；

Step 613: judging whether it is data access router CAR3 and receive data request information, if so, thening follow the steps 616, it is no to then follow the steps 614；

Step 614: intermediate Access Routers or intermediate data couple in router check anycast's routing table or name routing table, The list item that anycast's thresholding is A3 or data name thresholding is N3 is judged whether there is, if it is present step 616 is executed, it is no Then follow the steps 615；

Step 615: data request information is forwarded to arrival data by intermediate Access Routers or intermediate data couple in router The next-hop of couple in router CAR4 executes step 609；

Step 616: if it is the list item of A3 that anycast's routing table of intermediate Access Routers, which has anycast's thresholding, intermediate access routing Device executes step 401~418 as data consumer and obtains data C3, if intermediate data couple in router or data access It is the list item of N3 that the title routing table of router CAR3, which has data name thresholding, then intermediate data couple in router or data connect Enter router CAR3 as data consumer and executes 501~518 acquisition data C3；

Step 617: intermediate Access Routers, intermediate data couple in router or data access router CAR3 obtain data C3 Afterwards, a data response message is created, the source address of the data response message is A3, and destination address is IP data consumer S1's Unicast address loads as data C3；

Step 618: intermediate Access Routers, intermediate data couple in router, data access router CAR3, couple in router After AR1 IP conventional equipment creates or receives data response message, anycast's required list is checked, for each anycast address List item equal to A3, intermediate Access Routers, intermediate data couple in router, data access router CAR3, couple in router The destination address of data response message is updated to the next-hop thresholding of the list item by AR1 or conventional equipment, then forwards the number According to response message, while the list item is deleted from anycast's required list；

Step 619: judging whether it is that IP data consumer S1 receives data response message, if so, progress step 620, no Then carry out step 618；

Step 620:IP data consumer S1 saves the data C2 in data response message；

Step 621: terminating.

4. the data-centered communication means of one kind according to claim 3, which is characterized in that in data consumer S3 In data subnet, the data access router of the data subnet is CAR3, and data C2 is by anycast address A2 or data name Claim N2 definition, the couple in router for the IP subnet that the network prefix of anycast address A2 defines is AR2, if in data consumer S3 The data set provider of data C2 is not capable of providing in the data subnet at place, then data consumer S3 is obtained by following processes Data C2:

Step 701: starting；

Step 702: data consumer S3 constructs data name request message, and the data name of the data name request message is Then N2 sends the data name request message from the interface for reaching data access router CAR3；

Step 703: after conventional equipment or data access router CAR3 receive the data name request message from interface f4, Check name requests table, the list item for being N2 if there is data name thresholding then carries out step 704, otherwise carries out step 706；

Step 704: conventional equipment or data access router CAR3 check name request table, judge whether there is data name For N2 and otherwise list item that interface thresholding is f4 if so, carrying out step 718 carries out step 705；

Step 705: conventional equipment or data access router CAR3 create a list item in name request table, the list item Data name is N2, and interface thresholding is f4, executes step 718；

Step 706: conventional equipment or data access router CAR3 create a list item in name request table, the list item Data name thresholding is N2, and interface thresholding is f4, then judges whether it is data access router CAR3 and receives data name Request message, if so, 708 are thened follow the steps, it is no to then follow the steps 707；

Step 707: conventional equipment forwards data name request message from the interface for reaching data access router CAR3, executes step Rapid 703；

Step 708: data access router CAR3 sends a data request message, and the source address of the data request information is it Unicast address, destination address be anycast address A2；

Step 709: intermediate Access Routers, intermediate data couple in router or couple in router AR2 are received from upper hop HAR1 To after data request information, anycast's routing table is checked, the list item for being A2 if there is anycast address thens follow the steps 710, otherwise Execute step 712；

Step 710: intermediate Access Routers, intermediate data couple in router or couple in router AR2 check anycast's required list, The list item that anycast address is A2 and next-hop is HAR1 is judged whether there is, if it does, executing step 718, otherwise executes step Rapid 711；

Step 711: intermediate Access Routers, intermediate data couple in router or couple in router AR2 are in anycast's required list A list item, anycast address A2 are built, next-hop thresholding is HAR1, then executes step 718；

Step 712: intermediate Access Routers, intermediate data couple in router or couple in router AR2 are in anycast's required list A list item, anycast address A2 are built, next-hop thresholding is HAR1；

Step 713: judge whether it is couple in router AR2 and receives data request information, if so, 716 are thened follow the steps, it is no Then follow the steps 714；

Step 714: intermediate Access Routers or intermediate data couple in router check anycast's routing table or name routing table, The list item that anycast's thresholding is A2 or data name thresholding is N2 is judged whether there is, if it is present step 716 is executed, it is no Then follow the steps 715；

Step 715: data request information is forwarded to arrival and accessed by intermediate Access Routers or intermediate data couple in router The next-hop of router AR2 executes step 709；

Step 716: if it is the table of A2 that anycast's routing table of intermediate Access Routers or couple in router AR2, which have anycast's thresholding, , then intermediate Access Routers are made or couple in router AR2 is that data consumer executes step 401~418 acquisition data C2, If it is the list item of N2, intermediate data access routing that the title routing table of intermediate data couple in router, which has data name thresholding, Device executes 501~518 as data consumer and obtains data C2；

Step 717: after intermediate Access Routers, intermediate data couple in router or couple in router AR2 obtain data C2, wound Build a data response message, the source address of the data response message is A2, and destination address is the unicast of data consumer S1 Location loads as data C2；

Step 718: intermediate Access Routers, intermediate data couple in router, data access router CAR3, couple in router After AR1 is created or received data response message, anycast's required list is checked, the list item of A2 is equal to for each anycast address, Intermediate Access Routers, intermediate data couple in router, data access router CAR3, couple in router AR1 respond data The destination address of message is updated to the next-hop thresholding of the list item, then forwards the data response message, while requesting from anycast The list item is deleted in table；

Step 719: judging whether it is that data access router CAR3 receives data response message, if so, carrying out step 720, otherwise carry out step 718；

Step 720: data access router CAR3 constructs a data name response message, which bears Carrying is data C2；

Step 721: conventional equipment or data access router CAR3 creation or after receiving data name response message are looked into It sees name request table, the list item of N2, conventional equipment or data access router CAR3 is equal to for each data name thresholding The data name response message is forwarded from the interface domain of the list item, while deleting the list item from name request table；

Step 722: judge whether to be that data consumer S3 receives data name response message, if so, step 723 is carried out, Otherwise step 721 is carried out；

Step 723: data consumer S3 saves the data C2 in data name response message；

Step 724: terminating.