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Method for calculating optimal cooperation distance of D2D fusion network based on file popularity

A technology that integrates networks and popularity, and is applied in electrical components, advanced technologies, transmission systems, etc.

Inactive Publication Date: 2016-07-20
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For specific application scenarios and business requirements, the research on the optimal collaboration distance of D2D fusion network is still challenging.

Method used

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  • Method for calculating optimal cooperation distance of D2D fusion network based on file popularity
  • Method for calculating optimal cooperation distance of D2D fusion network based on file popularity
  • Method for calculating optimal cooperation distance of D2D fusion network based on file popularity

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0043] Assume that in a D2D converged network, the reference user node A requests video file i, the destination user node B caches the video file i, the cell radius is a, and the cooperation distance of D2D communication is d.

[0044] see figure 1 and figure 2 , the present invention is based on the calculation method of the D2D fusion network optimal collaboration distance of document popularity, comprises the following steps:

[0045] 1) In a single cell, considering that the movement of the cell users conforms to the Poisson point process, the cell users are modeled as a spatial Poisson point process, denoted as Φ, and the Poisson coefficient is ρ; each user caches a video file, and the user obtains the video Choose cellular mode or D2D mode for files; when user node u has a video file requirement, user node u sends a request to the base...

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Abstract

The invention discloses a method for calculating an optimal cooperation distance of a D2D fusion network based on file popularity. The method comprises the following steps: cell user movement is modeled as random distribution in a spatial Poisson point process, each user caches a video file, the user can obtain the video file by selecting a cellular mode or a D2D mode, the popularity of the video file is simulated by Zipf distribution, a user number ND2D activated by D2D and the user number NBS activated in the cellular mode in a single cell are obtained according to different features of D2D and cellular communication, then a single user obtains the network capacity of the fusion network by the average throughput in the D2D mode and the cellular mode, and a specific application scene and a service demand are obtained by an existing fast iterative algorithm, so the D2D fusion network obtains an optimal cooperation distance d* with the maximum throughput.

Description

Technical field: [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for calculating an optimal collaboration distance of a D2D fusion network based on file popularity. Background technique: [0002] With the rapid development of wireless communication technology, the number of users pursuing video services is increasing day by day. The traffic generated by video request delivery will soon exceed other mobile network services, and wireless data traffic will increase by an order of magnitude or two. To improve consumer satisfaction, new business models must be unlocked and the potential for complete blockage of overburdened cellular networks must be addressed. [0003] Through intelligent search, it is found that most users only pay attention to a small number of popular videos, and video services shared between users through wireless networks are becoming more and more common, that is, the data traffic generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04W40/20
CPCH04W40/20H04L67/63H04L67/568Y02D30/70
Inventor 张超贾美平
Owner XI AN JIAOTONG UNIV
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