User mobility supporting method distinguishing content in content centric networking (CCN)

A user mobility and mobility technology, applied in the network field, can solve the problems of wasting network bandwidth resources, unable to know user mobility status, and delay-sensitive real-time service impact.

Active Publication Date: 2018-02-23
CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First, the user's mobile switching will result in the loss of data messages sent to the user's original location
The user's original access router cannot know the current mobility status of the user. Therefore, after the user moves and switches, the access router will still forward the data message sent to the user's original location according to the matching entry in the pending interest table, which inevitably leads to the loss of part of the data message
[0004] Second, users cannot effectively use the content shared by the CCN network after mobile switching
It takes a certain amount of time to update the forwarding information database of each node in the network. Therefore, the user's new access router may not be

Method used

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  • User mobility supporting method distinguishing content in content centric networking (CCN)
  • User mobility supporting method distinguishing content in content centric networking (CCN)
  • User mobility supporting method distinguishing content in content centric networking (CCN)

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0131] In the first embodiment of the present invention, a user mobility support method for distinguishing content in a CCN network, such as figure 1 shown, including the following specific steps:

[0132] Step S101, judging the content type requested by the user;

[0133] Content types include: fast forwarding type, guaranteed forwarding type and best effort type;

[0134] Step S102, according to the determination result of the content type, execute the user mobility support process corresponding to the content type;

[0135] Wherein, step S102 specifically includes:

[0136] If the content type is determined to be the fast forwarding type, execute the fast forwarding type user mobility support process;

[0137] If the content type is determined to be the guaranteed forwarding type, perform the guaranteed forwarding type user mobility support process;

[0138] If the content type is determined to be the best-effort type, perform the best-effort type user mobility support ...

no. 2 example

[0178] The second embodiment of the present invention, this embodiment introduces a user mobility support data structure device for distinguishing content, including the following components:

[0179] Content Store, Pending Interest Table, and Forwarding Information Base.

[0180] Wherein, the content storage is used to cache the data messages of the route nodes; any entry in the content storage is a cache entry; the content storage includes: the third content name, the data message and the first survival time.

[0181] The pending interest table is used to record the status of interest messages received by nodes but not yet consumed. Any entry in the pending interest table is a pending interest table item; the pending interest table includes: fourth content name, list and second survival time; wherein, the list includes: entry, mobile state flag and content type.

[0182] Wherein, if the mobile state flag bit is 0, the user requesting content corresponding to the content nam...

no. 3 example

[0186] In the third embodiment of the present invention, a method for processing user mobility support interest messages with different contents includes the following specific steps.

[0187] Step S301, judging the message subtype of the interest message received by the node.

[0188] Message subtypes of Interest messages include: normal forwarding, mobile retransmission, mobile support request, and active cache request.

[0189] Nodes include but are not limited to: users, content sources, users' original access routers, and user's new access routers.

[0190] Step S302, performing at least one matching judgment on the interest message according to the judgment result of step S301 and the set matching principle.

[0191] Specifically, step S302 includes:

[0192] Step S3021: If the message subtype of the interest message is determined to be normal forwarding or mobile retransmission, then determine whether the first content name of the interest message matches the cache en...

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Abstract

The invention provides a user mobility supporting method distinguishing content in a content centric networking (CCN). The method comprises the steps of determining a type of content requested by a user; and according to a determining result of the content type, executing a user mobility supporting process corresponding to the content type. According to the method, an original access router cachesa data message sent to an original position of the user, so as to prevent data message loss caused by user mobility switch; content that is not obtained in the user mobility switch is cached proactively, so that mobility switch delay caused by user mobility switch is shortened effectively; independent user mobility supporting processes are combined according to the content type, so that the usermobility supporting method is more flexible and reliable; the adverse effect of user mobility switch on a non-real time service is lowered; and the method extends multiple protocols and applications supporting traditional internet and can be widely used.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a user mobility support method for distinguishing content in a CCN network. Background technique [0002] CCN (Content Centric Networking, referred to as content-centric network) network has many advantages such as high resource utilization rate, low network energy consumption and good dynamic performance, and has now developed into one of the most recognized and potential network architectures in the field of future Internet research. . However, as a new network architecture, the CCN network still has relatively serious user mobility problems, which are manifested in the following three aspects: [0003] First, the mobile switching of the user will result in the loss of data messages sent to the original location of the user. The original access router of the user cannot know the current mobility status of the user. Therefore, after the user moves and switches, the access rou...

Claims

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Application Information

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IPC IPC(8): H04L29/08
CPCH04L67/51H04L67/568H04L67/60
Inventor 饶迎李显杰翟易坤范鑫鑫李志鹏贺长宇郑学欣
Owner CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC
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