File sharing method based on social network

A technology for social networking and file sharing, applied in the device-to-device field of communication technology, it can solve the problems of difficult tracking and control, low security, etc., and achieve the effect of improving efficiency, optimizing overall performance, and reducing download burden.

Active Publication Date: 2016-12-14
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the current social network file sharing method has defec

Method used

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  • File sharing method based on social network
  • File sharing method based on social network
  • File sharing method based on social network

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The technical solution adopted by the present invention to solve the technical problem is: use the small world network model to simulate the social network formed by users. Subsequently, according to the user's demand for files, the user is divided into several temporary groups, and in each group, the central user with the greatest social degree receives the target file first. Finally, according to the social relationship between users, use D2D communication technology to share with other users. These include user node trust degree algorithm Suc, group member social degree algorithm Dul, and delay algorithm Del. At the same time, the greedy color edge labeling algorithm, which is commonly used in the study of file sharing mechanism for delay calculation, is introduced to compare with our proposed delay algorithm.

[0032] User node trust degree algor...

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Abstract

The invention discloses a file sharing method based on a social network. The invention provides a new method for file sharing and distribution among users based on a social network in a D2D communication environment controlled by a base station. In the method, the base station divides the users into multiple temporary groups according to the demands of the users, and judges a central user through the degrees of sociality of the users. In the case of no file cache demand in the system, the base station firstly sends a file to the central user through a wireless cellular communication link, and the central user shares the file to the users having social relations in the groups through D2D communication. The users having no social relations with the central user can acquire the file from the base station or other users who have acquired the file, and thus the file sharing is achieved. In addition, the problem that one D2D user can only process (receive or send) one request at the same time is solved. By adopting the file sharing method disclosed by the invention, the transmission delay is greatly reduced, the load of the base station is relieved, and the overall performance of the cellular communication system is optimized.

Description

technical field [0001] The invention belongs to the technical field of device-to-device in communication technology, and in particular relates to a method for distributing and sharing files based on a social network. Background technique [0002] With the rapid development of science and technology, social networks have become an important part of human life, and gradually become the main body of message transmission and information carrying. The leaping progress of mobile communication technology has made people's social networking methods rapidly transition from traditional social networking sites to the mobile field. The formation, evolution and development of this mobile social network provide people with more convenient information exchange in their lives. Reducing the cost of material time and providing high-quality, efficient and useful information" is advancing in this direction, and its impact and role are extraordinary. At the same time, the relationship between p...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/58H04W24/02H04W28/08H04W72/04G06Q50/00
CPCH04L67/06H04L67/1095H04L67/141H04W24/02H04W28/08H04W72/0453G06Q50/01H04L51/52
Inventor 王磊周亮王涛陈鸣锴刘嘉铭
Owner NANJING UNIV OF POSTS & TELECOMM
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