Content-centric networking cache judgment method based on node importance degrees

A content-centric network and important technology, used in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as increasing network delay, unreasonable, and reducing content acquisition delay, and achieves increased storage ratio, The effect of improving overall performance and improving network survival time

Active Publication Date: 2013-09-18
JIANGSU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, in the BETW method in [2], the return data is only cached on the most important node on the return path. This method is not very reasonable, and the most important nodes on the return path may be far away from the user. , which will increase the average hit distance for users to obtain content and increase network delay
[0007] Because the existing cache judgment technology does not take into account the importance of each node on the

Method used

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  • Content-centric networking cache judgment method based on node importance degrees
  • Content-centric networking cache judgment method based on node importance degrees
  • Content-centric networking cache judgment method based on node importance degrees

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Embodiment Construction

[0035]The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] Taking the 3-layer binary tree content-centric network topology as an example, select a content transmission path, such as figure 2 As shown, the present invention will be described. The cache replacement method of the present invention uses LRU, that is, when new content enters the node cache, the least recently used content is removed from the cache.

[0037] Specific steps:

[0038] Step 1. Generate a request packet;

[0039] Step 2. The request will seek the desired content along the content delivery path.

[0040] The specific process in step 2 is:

[0041] Step1. Determine the content transmission path. At this time, the transmission path includes nodes R1, R2, and R3;

[0042] Step2. Obtain the flow value flow (Ri) of nodes R1, R2, and R3 on the transmission path from the user to the source server, which are 500pac...

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Abstract

The invention discloses a content-centric networking cache judgment method based on node importance degrees. According to the method, importance degrees of nodes on return paths are considered, reasonable distribution of network cache resources is further improved, and the cache hit rate is increased, so that performances of a content-centric networking are improved on the whole. The method is applicable to deployment of the content-centric networking.

Description

technical field [0001] The invention belongs to the field of content-centric networks, and in particular relates to a content-centric network cache judgment method. Background technique [0002] Since the emergence of the Internet in the 1960s, the Internet has developed rapidly, and its application subjects have shifted from the initial hardware sharing to the sharing of information such as text, pictures, and videos. Users pay more attention to the speed, quality and security of content rather than where to get it. The existing host-centric network system has been difficult to meet the development needs of the Internet. Although improved technologies such as CDN and P2P have emerged, they still cannot overcome many inadaptability problems exposed by them. Therefore, it is inevitable to build a new network system, and under this background, the information-centric network (ICN: Information Centric Networking) came into being. [0003] The so-called information-centric net...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/861
Inventor 朱轶贺远军倪亚楠施佳
Owner JIANGSU UNIV
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