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Probabilistic Cache Content Placement Method Based on Content Centrality

A content-centric, caching technology, applied in transmission systems, electrical components, etc., can solve problems such as reducing cache utilization and increasing competition, and achieves the effect of reducing content cache redundancy, reducing content acquisition delay, and optimizing cache hit rate.

Active Publication Date: 2022-03-29
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of method tends to place cached content at the edge node, which will increase the competition of different content at the edge cache node, thereby reducing cache utilization

Method used

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  • Probabilistic Cache Content Placement Method Based on Content Centrality
  • Probabilistic Cache Content Placement Method Based on Content Centrality
  • Probabilistic Cache Content Placement Method Based on Content Centrality

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Embodiment Construction

[0036] Attached below figure 1 The present invention will be further described in detail with reference to accompanying drawing 10(b) and specific examples.

[0037] In one embodiment, a content centrality-based probabilistic cache content placement method (CCPCP) is provided, such as figure 1 shown, including:

[0038] S100. The user sends an Interest packet requesting a content block to the network;

[0039] S200. Forward the Interest packet on the routers in the network according to the shortest path, and initialize the CCmax variable, which is used to record the maximum content centrality value of the intermediate routers that the user requests for the content block on the shortest path; wherein, the content center Resilience refers to the product of the ratio of the number of shortest paths from all users to content through the node to the number of shortest paths from all users to content and the content popularity;

[0040] S300, after the router in the network recei...

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Abstract

A probabilistic cache content placement method based on content centrality: S100, the user sends an interest packet requesting a content block to the network; S200, forwards the interest packet on the router in the network according to the shortest path; S300, the router in the network receives the interest packet After the package, check whether there is corresponding cache content, if hit, go to execute S400, if not hit, then record and forward to the next hop router until forwarded to the content source server; S400, return the data containing the requested content block The packet is sent back along the path opposite to the forwarding of the Interest packet; S500. When the data packet is sent back to the router with caching function, calculate the caching probability according to the two indicators of content centrality and content acquisition delay, and according to the caching probability Decide whether to cache the contents of this packet in this router. The method can reduce cache redundancy, improve cache utilization, reduce content acquisition delay, and relieve network bandwidth pressure.

Description

technical field [0001] The disclosure belongs to the technical field of network caching, and in particular relates to a probabilistic caching content placement method based on content centrality. Background technique [0002] With the rapid development of the Internet, the traffic in the network is growing explosively, and users' acquisition of massive information has gradually become the core demand. However, the end-to-end communication mode of the traditional network can no longer cope with the huge pressure brought by the sharp increase in traffic. Therefore, the future network architecture has become a research hotspot. Among them, as a new type of network architecture system that is gradually recognized, information-centric networking (ICN, information-centric networking) represented by CCN / NDN, DONA, NetInf, etc. advocates an information-centric communication model instead of the traditional one. The host-centric communication mode can better adapt to the transformat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L67/568
Inventor 李黎柳寰宇杜娜娜王小明张立臣李鹏
Owner SHAANXI NORMAL UNIV
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