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A Cellular Heterogeneous Caching Method Based on Group Cooperation

A caching and cellular technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of huge video traffic, increase base station management and bandwidth burden, and achieve the effect of reducing file volume and energy consumption

Active Publication Date: 2021-01-08
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, just because the buffer is deployed in the mobile switch, the video traffic is extremely large, which increases the management and bandwidth burden of the base station.

Method used

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  • A Cellular Heterogeneous Caching Method Based on Group Cooperation
  • A Cellular Heterogeneous Caching Method Based on Group Cooperation
  • A Cellular Heterogeneous Caching Method Based on Group Cooperation

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Embodiment Construction

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

[0031] Such as figure 1 As shown, the present invention provides a cellular heterogeneous network caching strategy based on intergroup caching, comprising the following steps:

[0032] Step 1. Build a system model

[0033] The research focus of the present invention is on the caching strategy under the cellular heterogeneous network, so the core network and the remote network server are simplified and regarded as a remote file library together. It is assumed that N adjacent SBSs constitute an SBS group and are considered as a whole at the cache level. Each SBS shares its cache content with other SBSs in the group through a wireless or wired backhaul connection. Define a symmetric matrix d i,j ∈D N×N , 1≤i, j≤N to represent the distance between two arbitrary small base stations in the group. d here i,j Used to indicate when SBS i want to transfer to SBS...

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Abstract

The invention discloses a caching method based on intergroup cooperation under a cellular heterogeneous network, which includes establishing a cellular heterogeneous network system model, formulating an energy performance index and generating a problem to be optimized, and using a simulated annealing algorithm to solve the optimization problem. The invention expounds the detailed process of the proposed cellular heterogeneous network caching strategy based on inter-group cooperation, and specifies and analyzes the mechanism of each base station caching text. By adopting the technical solution of the present invention, in the scenario of a cellular heterogeneous network, a network system model is reasonably established, and a corresponding caching strategy is formulated, so that network energy consumption is reduced.

Description

technical field [0001] The present invention belongs to the related field of wireless communication, and in particular relates to a cellular heterogeneous caching method based on intergroup cooperation, which divides the traditional wireless network into two layers: a macro base station (Macro Base Station, MBS) and a small base station (Small Base Station, SBS). , expand the capacity of the network, and at the same time use the cache technology to cache the corresponding file fragments in each base station, reducing the amount of files requested by the backhaul, thereby reducing the overall energy consumption of the network. [0002] technical background [0003] With the rapid development of modern Internet communication technology, the bandwidth capacity provided by the network is also rapidly enhanced, which makes users tend to support the behavior of video browsing. At the same time, wireless communication technologies are developing rapidly (such as Wi-Fi, 4G, and 5G co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L29/08
CPCH04L41/044H04L41/0833H04L41/145H04L67/06H04L67/568
Inventor 孙艳华张矾郝哲司鹏搏杨睿哲张延华
Owner BEIJING UNIV OF TECH
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