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Active content pushing method based on node semi-local centrality and content popularity

A semi-local and content-based technology, applied in the field of active content push based on node semi-local centrality and content popularity, can solve problems such as mobility support protocols, unnameable data networks, etc.

Active Publication Date: 2021-09-10
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 1. The new routing method based on the content name in NDN directly leads to the fact that the mobility support protocol in the current IP network cannot be directly applied to the named data network

Method used

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  • Active content pushing method based on node semi-local centrality and content popularity
  • Active content pushing method based on node semi-local centrality and content popularity
  • Active content pushing method based on node semi-local centrality and content popularity

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Embodiment Construction

[0033] Starting from the characteristics of NDN itself, the present invention designs a scheme to support the movement of content producers, that is, an active push scheme based on semi-local centrality and content popularity, in combination with the caching function of NDN network nodes. When the content producer moves, the content in the node is counted according to the popularity calculation formula. After the PPC push path is established, the selected content with high popularity is pushed to the core nodes in the network. The core nodes The selection of is performed by semi-local centrality information. In order to realize the active push of content in NDN, this paper uses some functions of the PIT table (Pending Interest Table, Pending Interest Table) to establish a way for content producers to push content to core nodes, and then complete the push of content. In this way, even if the content producer moves, the content consumer can still obtain the requested content. T...

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Abstract

A content active pushing method based on node semi-local centrality and content popularity comprises the following steps: when a content producer moves, actively caching popularity content with the highest ranking in contents generated by the content producer through a core node with an important value in a network so that the purpose of improving the content availability is achieved after the content producer moves. According to the method, the caching mechanism and the intelligent routing forwarding strategy of the NDN are fully utilized, the core node with the important value actively caches the content, the response frequency provided after the node caches the content and the forwarding hop count reduced after the node caches the content are improved, and the influence of movement of a content producer on the network is reduced. Caching of high-popularity content reduces the node resources and storage space consumed by a caching operation, and avoids high-frequency cache replacement of a core node.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to an active content push method based on node semi-local centrality and content popularity. Background technique [0002] The research on NDN mobility mechanism is not only an important basis for ensuring the overall application and performance of the network, but also an important support for improving network operation efficiency and ensuring high-quality and highly reliable network services in a mobile environment. At the same time, the study of NDN mobility mechanism is also crucial to the realization of specific technologies such as content-oriented release, request, storage, routing, and forwarding in the new network system. The research on the mobility mechanism of NDN is divided into the mobility of content consumers and the mobility of content producers. For the movement of content consumers, the communication mechanism driven by NDN content consumers natively s...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/751H04L45/02
CPCH04L45/02H04L67/55H04L67/568
Inventor 李沛谕范志辉陈曦张超武崔高林王辉
Owner HENAN UNIV OF SCI & TECH