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Method for Optimizing the Location of Small Cells in a Wireless Caching Network

A small base station and network technology, applied in wireless communication, network planning, network traffic/resource management, etc., can solve the problem of not considering the influence of small base station location, and achieve the effect of reducing average delay, lightening load, and improving utilization efficiency

Inactive Publication Date: 2021-04-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problem that the existing wireless caching technology based on route optimization does not consider the influence of the position of the small base station, and proposes an algorithm for optimizing the position of the small base station

Method used

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  • Method for Optimizing the Location of Small Cells in a Wireless Caching Network
  • Method for Optimizing the Location of Small Cells in a Wireless Caching Network
  • Method for Optimizing the Location of Small Cells in a Wireless Caching Network

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Embodiment

[0050] Next, the discretized small base station candidate position M=10, the number of arranged small base stations N=2, the number of users K=20, the total number of files F=10, and the channel capacity of the small base station A m =5, m≥2, small cell memory S=1, file size L=2, signal-to-noise ratio σ=0.1, path loss index α=4, small cell transmit power P m =2, m≥2, SNR threshold δ=0.1, channel gain h k,m Obey the Gaussian distribution of (1,0.1), The specific implementation manner of the present invention is introduced as an example.

[0051] sender:

[0052] Such as figure 1 The specific implementation process of the two-layer heterogeneous cellular network shown is roughly divided into the following steps:

[0053] Step 1-1: Determine the optimization objective function, that is, the weighted sum of the average delay experienced by users and the average service cost of the small base station. and various constraints.

[0054] Step 1-2: The objective function is not ...

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Abstract

The invention belongs to the technical field of wireless communication, and specifically relates to a method for optimizing the location of a small base station in a wireless cache network. Accordingto the method provided by the invention, the location of the small base station is further optimized on the basis of the existing wireless cache technology based on routing optimization. The method provided by the invention is applied to the wireless cache network, the average delay experienced by a user in the network is further reduced by optimizing the location of the small base station, the load of the network is relieved, and the utilization efficiency of the spectrum is improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for optimizing the position of a small base station in a wireless cache network. Background technique [0002] Wireless caching (Wireless Caching) technology is a technology to reduce network load. Its basic principle is to cache the data popular with users in the small base station at the edge of the network. In-memory access instead of accessing this data from the core network over wireless links with limited capacity. This technique takes advantage of a statistical fact that most user requests are concentrated on a small part of the data, in other words, the popularity of the data obeys the zipf distribution. Compared with a communication network that does not use wireless caching, a wireless caching network can effectively reduce the delay experienced by users, reduce the load of the network, and improve the efficiency of spectrum utilizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W16/22H04W24/02H04W28/14H04W88/08
CPCH04W16/18H04W16/22H04W24/02H04W28/14H04W88/08
Inventor 廖玉成肖悦甘瑞蒙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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