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A data fragmentation cache method based on node grouping in mobile network

A technology of data fragmentation and mobile network, applied in the field of computer network, can solve the problem of low data access efficiency, and achieve the effect of reducing cache data redundancy, reducing power consumption, and facilitating control

Active Publication Date: 2019-03-05
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This way of data access is inefficient, and a suitable solution is needed to improve the efficiency of data access in the mobile network environment

Method used

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  • A data fragmentation cache method based on node grouping in mobile network
  • A data fragmentation cache method based on node grouping in mobile network
  • A data fragmentation cache method based on node grouping in mobile network

Examples

Experimental program
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Embodiment 1

[0051] Referring to the accompanying drawings, a method for caching data slices based on node grouping in this embodiment mainly includes three aspects: dividing cooperative groups, cooperative caching within cooperative groups, and data sharing between cooperative groups.

[0052] The division of cooperation groups is mainly by analyzing the battery capacity B of the node, the cache resource size C of the node, and the importance I of the node in the network, and by calculating q 1 B+q 2 C+q 3 The value of I (where q i (i=1, 2, 3) are the corresponding weights) as the standard for selecting the central node, denoted as S. At the same time, according to a certain selection ratio ρ, the node with a larger S value in the network is selected as the central node for dividing the cooperation group, and according to the contact history of the nodes in the network, the nodes in the network whose contact times with the central node are greater than the preset threshold T Divide int...

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Abstract

The invention provides a node grouping-based data slice caching method in a mobile network, which mainly includes three stages of partitioning cooperative groups, intra-group cooperative caching, and inter-group data sharing. According to the importance of the nodes in the network, some nodes are selected as the central nodes, and the nodes adjacent to the central node are divided into cooperative groups; in the group, the central nodes allocate cache tasks according to the group cache information table, and manage the data cache in the cooperative group ; Between groups, the fragmentation of cached data is realized by using the shortest contact time between nodes, and at the same time, the total contact duration between nodes is used to limit the cache upper limit of nodes to improve the utilization of cache space, and the data slices are coded. Coding solves the problem of collecting coupons, and finally realizes the cooperative caching of the whole network, which improves the efficiency of data access in the mobile network environment.

Description

technical field [0001] The invention relates to the technical field of computer networks, more specifically, to a method for caching data slices based on node grouping in a mobile network. Background technique [0002] Caching technology is usually used to improve the efficiency of data access in the network, but in the mobile network environment, mobile nodes are played by handheld smart terminal devices, which have the problem of limited power and cache space resources, which is different from the traditional wired network environment. Big difference, so special caching method suitable for mobile environment is required. [0003] Cooperative cache technology improves the efficiency of data access in mobile environment by utilizing the mutual cooperation of nodes to share the cache resources of nodes. In the existing cooperative cache research, it is assumed that the cache node can transmit all the data required by the data requester in one contact process. However, this a...

Claims

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Application Information

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IPC IPC(8): H04L29/08
CPCH04L67/1097H04L67/568
Inventor 郑啸高汉郑廷廷秦锋
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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