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A three-layer cooperative caching method for fog wireless access network

A wireless access network, wireless access point technology, applied in wireless communication, network traffic/resource management, transmission system, etc., can solve the problems of not meeting the requirements and increasing the load of the backhaul link.

Active Publication Date: 2020-09-18
SOUTHEAST UNIV
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Problems solved by technology

[0003] However, the existing communication network architecture does not meet the requirements of 5G / B5G communication. Moreover, with the advent of the 5G / B5G era, the number of files in the network will increase greatly, and the load on the backhaul link in the network will also increase greatly.

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  • A three-layer cooperative caching method for fog wireless access network
  • A three-layer cooperative caching method for fog wireless access network
  • A three-layer cooperative caching method for fog wireless access network

Examples

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Embodiment Construction

[0055] This embodiment provides a three-layer cooperative caching method for a fog wireless access network, including the following steps:

[0056] (1) Divide the fog wireless access network into the fog wireless access point (F-AP) layer and the cloud node (CU) layer; figure 1 As shown, the cloud database is connected to all cloud nodes, one cloud node covers multiple fog wireless access point clusters, and each fog wireless access point cluster has multiple fog wireless access point clusters. The fog wireless access points in the same cluster communicate with each other, the fog wireless access points of different clusters do not communicate with each other, and the cloud nodes do not communicate with each other. Users directly access the clusters in the fog wireless access point cluster according to their geographical location. head or other fog wireless access points.

[0057] (2) According to the rule of layer-by-layer upward forwarding, the route for forwarding the user...

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Abstract

The invention discloses a three-layer cooperative caching method for a fog wireless access network, comprising: (1) dividing the fog wireless access network into a fog wireless access point layer and a cloud node layer; (2) specifying a user's file request The route forwarded in the network; (3) The fog wireless access point calculates the request arrival rate of each file through the received file request, and calculates the weight of each file in the knapsack algorithm according to the file request arrival rate, and finally uses the knapsack algorithm to solve the problem The optimal cache distribution in the fog wireless access point cluster; (4) The cluster head calculates the request arrival rate of each file through the received file request, and calculates the weight of each file in the knapsack algorithm according to the request arrival rate, and finally adopts the knapsack algorithm Solve the optimal inter-cluster cooperative cache distribution; (5) The cloud node calculates the file arrival rate through the received file request, and calculates the weight of each file in the knapsack algorithm according to the request arrival rate, and finally uses the knapsack algorithm to solve the cloud node layer optimal cache distributed. The present invention can effectively reduce the load of the backhaul link.

Description

technical field [0001] The invention relates to content cache technology, in particular to a three-layer cooperative cache method for a fog wireless access network. Background technique [0002] At present, in order to reduce the load of the backhaul link in the network, people's research on the buffer arrangement in the wireless communication system is mainly concentrated on the existing architecture such as the cloud radio access network, and the research on the single-layer buffer arrangement at the base station layer is the main research. [0003] However, the existing communication network architecture does not meet the requirements of 5G / B5G communication. Moreover, with the arrival of the 5G / B5G era, the number of files in the network will increase greatly, and the load of the backhaul link in the network will also increase greatly. Therefore, it is an urgent problem to find a cache placement strategy suitable for 5G / B5G network architecture with low link load. Cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04W28/14
CPCH04L67/1097H04W28/14H04L67/5682H04L67/568
Inventor 夏骋宇蒋雁翔
Owner SOUTHEAST UNIV
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