Cache placement method and device in D2D network

A network and cache technology, applied in the field of network storage resource allocation, can solve problems such as increasing user communication opportunities, affecting user terminal cache placement strategies, etc., to achieve the effect of solving the surge of video services

Active Publication Date: 2019-07-16
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the mobility of users in D2D networks will increase the chance of communi

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  • Cache placement method and device in D2D network
  • Cache placement method and device in D2D network
  • Cache placement method and device in D2D network

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the embodiment of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] figure 1 A schematic flowchart of a buffer placement method in a D2D network provided by an embodiment of the present invention, as shown in figure 1 shown, including:

[0026] Step 11: Obtain the user's contact duration and interval contact duration, the contact duration is the duration for two users to move into the D2D communication range, and the interval ...

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Abstract

The embodiment of the invention provides a cache placement method and device in a D2D network. The method comprises the following steps: acquiring contact duration and interval contact duration of a user, equally dividing a file into a plurality of file blocks, and transmitting the file blocks according to a preset rule to obtain the average number of the file blocks acquired from an adjacent userand the average number of the file blocks acquired from a base station; obtaining the transmission cost, and obtaining the average network consumption cost and the average file transmission delay according to the transmission cost, the contact time length, the interval contact time length, the average file block number obtained from the adjacent user and the average file block number obtained from the position of the base station; and performing resource allocation according to the network average consumption cost and the file average transmission delay to obtain a cache placement set. According to the cache placement method and device in the D2D network provided by the embodiment of the invention, a file cache placement scheme based on minimum average consumption cost is designed, and the problem of sharp increase of a mobile internet video service in a mobile scene of a user terminal is solved.

Description

technical field [0001] The present invention relates to the field of network storage resource allocation, in particular to a cache placement method and device in a D2D network. Background technique [0002] With the popularization of smart phones and the development of mobile Internet, wireless data traffic has exploded in recent years. Communication services have also changed from traditional voice and SMS services to emerging services with large capacity and low latency such as live video, online games, augmented reality, and virtual reality. [0003] To cope with the pressure of explosive growth in mobile data traffic, the ultra-dense cell network architecture can improve network capacity by reducing the coverage radius of each cell, deploying multiple base stations densely, and increasing the frequency reuse factor. Although this solution can increase the peak rate of the air interface of the wireless network, it brings great load pressure on the backhaul link of the ne...

Claims

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Application Information

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IPC IPC(8): H04W4/70H04W28/14H04L29/08H04N21/231
CPCH04W4/70H04W28/14H04N21/23106H04L67/568
Inventor 王莹孙瑞锦刘远飞赵俊伟张平
Owner BEIJING UNIV OF POSTS & TELECOMM
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