Cooperative caching method of content-centric networking

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

Inactive Publication Date: 2017-11-10
INST OF INFORMATION ENG CAS
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  • Abstract
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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

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  • Cooperative caching method of content-centric networking
  • Cooperative caching method of content-centric networking
  • Cooperative caching method of content-centric networking

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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 invention provides a cooperative caching method of content-centric networking. The method comprises the following steps: classifying network nodes to obtain a node cluster with a cluster ID, and performing level setting on the nodes in the node cluster; if that content packets are cached in the current node is detected after the current node receives an interest packet endowed with the cluster ID transmitted by the user terminal, generating a first content packet into which the cluster ID of the interest packet is added, and returning the first content packet through a reverse path of the interest packet; and if a first preset condition is satisfied when an intermediate node receives the first content packet, caching the first content packet by the intermediate node, and continually returning the first content packet through the reverse path of the interest packet when that the first content packet exists in a PIT table is determined. Through adoption of the cooperative caching method, caching is performed by a cluster head node within a network range, and is performed on the basis of network content popularity in the cluster, so that the content diversity of the cluster head node is ensured, and the hit rate and acquisition speed of network contents are increased.

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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IPC IPC(8): H04W40/32H04L29/08
CPCH04W40/32H04L67/568
Inventor 张玉刘银龙吴荻
Owner INST OF INFORMATION ENG CAS
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