Collaboration caching method and system for content center network

A content-centric network and content caching technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as increased network delay, inability to guide request forwarding, and lack of coordination mechanisms

Inactive Publication Date: 2013-03-27
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Description
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Problems solved by technology

This phenomenon is due to the lack of an effective coordination mechanism between nodes, and the ...

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  • Collaboration caching method and system for content center network
  • Collaboration caching method and system for content center network
  • Collaboration caching method and system for content center network

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Embodiment Construction

[0028] In view of the problems existing in the prior art, the embodiment of the present invention intends to divide subnets based on node clustering, plan a large number of cache nodes in the CCN as a whole, coordinate cache strategies around dominant nodes, and implement them in the decomposed subnetworks. The storage space inside a subnet is regarded as a whole, and there is only one copy of the same content in a subnet, which reduces the content redundancy of the network and ensures the diversity of network content. Using the content placement information to guide the request routing, the user's request can be satisfied nearby, reducing the overall traffic overhead of the network. Moreover, the establishment of Index information is only carried out at the dominant node, which reduces the overhead of constructing Index information.

[0029] The present invention will be described in detail, clearly and completely below in conjunction with the accompanying drawings and specif...

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Abstract

An embodiment of the invention discloses a collaboration caching method and system for a content center network. The method comprises enabling all nodes of the content center network to be divided into a plurality of subnetworks on the basis of a communication dominating set, enabling each subnetwork to comprise one dominating node and one or a plurality of non-dominating nodes, enabling each node to comprise one embedded cache, and enabling each dominating node to store content placing index information and content request transfer index information of the subnetwork where the dominating node is located; and synergizing all embedded caches on the basis of content caching placing and dynamic routing request. According to the embodiment, the subnetworks are divided on the basis of the communication set, content setting is related to heat on the basis of the network, dynamic routing is achieved through content placing/transfer index information, the request is routed to the targeted node nearby, synergistic caching is achieved, redundancy of network content is reduced, network expenditure is reduced simultaneously, and caching synergistic efficiency is improved.

Description

technical field [0001] The invention relates to the field of network cache distribution management, in particular to a content-centric network collaborative cache method and system. Background technique [0002] Internet applications are undergoing a transition from a host-oriented point-to-point communication model to a content-centric communication model. Internet applications mainly revolve around the distribution and retrieval of content, that is, they are more concerned about the content itself. To this end, Content Centric Network (CCN) focuses on exploring information / content / object-centric future network architecture. In-network cache (In-network Caching) is the basic facility of each router in CCN. The router caches the data packets passing through it according to a certain strategy, and serves subsequent requests. [0003] Embedded caching is an important feature of CCN. The basic idea is that caching devices are inherently deployed on each router node. The desi...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/741H04L45/74
Inventor 徐月梅李杨林涛唐晖慈松谭红艳
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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