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Neighbor cooperation cache replacement method in content center network

A content-centric network and collaborative caching technology, applied in electrical components, transmission systems, etc., can solve the problems of increasing content server load, increasing network bandwidth occupation, increasing content request delay, etc., to enhance distribution efficiency and improve cache hit rate. , Improve the effect of network cache capacity

Inactive Publication Date: 2014-07-02
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The caching method of LCE in CCN will lead to a large amount of redundant cached content. At the same time, compared with the total amount of content in the network, the cache space is very small. The content server obtains the content, therefore, the occupation of network bandwidth is increased, the load of the content server is increased, and the delay of user content requests is also increased

Method used

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  • Neighbor cooperation cache replacement method in content center network
  • Neighbor cooperation cache replacement method in content center network
  • Neighbor cooperation cache replacement method in content center network

Examples

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Embodiment Construction

[0027] Such as figure 1 As shown, node i is taken as an example to illustrate the working process of the content-centric network neighbor-referencing cooperative cache policy (Neighbor-Referencing Cooperative Cache Policy, NRCCP) NRCCP policy proposed by the present invention.

[0028] Assumptions:

[0029] The cache space size of node i is K, that is, the ECS table can cache K pieces of content, and all cached content entries have the same size.

[0030] Node i has at least one neighbor node, and the total number of nodes in the network is M.

[0031] The node initiates a request for content i, which satisfies the Poisson process with parameter λi, let Ni(t) be the number of times content i is requested by a certain node between 0 and time t

[0032] definition:

[0033] ei j (1≤j≤K) indicates the jth Cache block in node i.

[0034] ne i Indicates the number of neighbors node i has.

[0035] r il (1≤l≤nei) means the lth neighbor of node i.

[0036] Let N represent th...

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Abstract

The invention relates to a neighbor cooperation cache replacement method in a content center network. The method is characterized by comprising the steps that step 1, when a node i has a new data einew request, if the cache space of the node i is full is judged; if the cache space of the node i is not full, the step 3 is executed directly; if the cache space of the node i is full, the step 2 is executed, and judging of cooperation cache replacement is carried out; step 2, if the new data einew is cached in a neighbor node of the node i is checked, and if the new data einew is cached, the new data einew is no longer cached in the node i; if the new data einew is not cached, the step 3 is executed; step 3, the new data einew is cached in the local through LRU cache replacement algorithm.

Description

technical field [0001] The invention relates to a neighbor cooperative cache replacement method in a content center network. Background technique [0002] With the rapid development of computer and Internet technology, people's demand for big data from the Internet is increasing. Therefore, a new type of content-centric network (Content-Centric Network, CCN) architecture came into being. In the past two years, the research on content-centric network architecture has attracted extensive attention. The next-generation network architecture developed together with CCN also includes NDN (Named Data Networking), MobilityFirst, NEBULA, XIA (eXpressive Internet Architecture), etc. Among the many next-generation network architectures, CCN has more advantages, and it is also the architecture that has been studied more. CCN has the characteristics of network caching, content naming, requester-driven, data security, etc. Among them, In-Network Caching is an important part of the CCN ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 张国印唐滨王向辉高伟邢志静
Owner HARBIN ENG UNIV
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