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A Collaborative Caching Method for Content-Centric Networks

A content-centric network and collaborative caching technology, applied in the field of network communication, can solve the problems of long content hit response time, heavy server access load, and low content hit rate, so as to ensure content diversity, avoid long-distance feedback, and improve hits rate effect

Inactive Publication Date: 2019-10-11
INST OF INFORMATION ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a collaborative caching method for a content-centric network, which is used to solve the problems in the prior art that the hit response time of content is long, the access load of a server is large, and the hit rate of content is low

Method used

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  • A Collaborative Caching Method for Content-Centric Networks
  • A Collaborative Caching Method for Content-Centric Networks
  • A Collaborative Caching Method for Content-Centric Networks

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Embodiment Construction

[0044] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] figure 1 It shows that an embodiment of the present invention provides a collaborative caching method for a content-centric network, including:

[0046] S1. Classify network nodes to obtain node clusters with cluster IDs, and set the level of nodes in the node clusters, set the cluster head node level to 0, and set the levels of other nodes in the cluster according to the distance from the cluster head node.

[0047]In this step, it should be noted that, in the embodiment of the present invention, each node cluster can be assigned a corresponding cluster ID. The clustering of network nodes is based on GDS for network clustering and node classification. details as...

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Abstract

The present invention provides a collaborative caching method for a content-centric network, comprising: classifying network nodes to obtain node clusters with cluster IDs, and setting levels for nodes in the node clusters; when the current node receives a cluster ID sent by a user terminal After the interest packet of ID, if it is detected that the current node caches a content packet, then generate the first content packet with the cluster ID added to the interest packet, and pass the first content packet through the reverse path of the interest packet Return; when the intermediate node receives the first content package, if the first preset condition is satisfied, the intermediate node caches the first content package, and when it is determined that the first content package exists in the PIT table, Continue to return the first content packet through the reverse path of the Interest packet. Realize the use of cluster head nodes to cache within the network, and cache based on the popularity of network content within the cluster, which ensures the content diversity of cluster head nodes and improves the hit rate and acquisition speed of network content.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a collaborative caching method for a content-centric network with a wireless grid structure. Background technique [0002] Content-Centric Networking (CCN) is an emerging network architecture. CCN takes content instead of location as the core of the communication model, and can fundamentally solve the problems existing in IP networks in terms of scalability and content distribution effectiveness. . Content Centric MANET (CCMANET) is a network architecture formed by applying the content-centric idea of ​​CCN to Mobile Ad Hoc Network (MANET). With the rapid development of MANET, the research of CCMANET has gradually become a hot spot. [0003] The purpose of applying CCN to MANET is to improve the content acquisition efficiency of users in wireless ad hoc networks. The built-in caching technology can effectively reduce network traffic and improve user communication ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/32H04L29/08
CPCH04W40/32H04L67/568
Inventor 张玉刘银龙吴荻
Owner INST OF INFORMATION ENG CHINESE ACAD OF SCI
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