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Pigeon Swarm Optimization Algorithm for Fog Wireless Access Network and Cooperative Caching Method Based on the Algorithm

A wireless access network and cooperative caching technology, applied in wireless communication, network traffic/resource management, transmission system, etc., can solve the problems of increased average file download delay and unsatisfactory requirements, and avoid local optimum and excessive The effects of early convergence, improved cache cooperation, and improved global search capabilities

Active Publication Date: 2022-05-10
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 arrival of the 5G / B5G era, the number of files in the network will increase greatly, and the average download delay of files in the network will also increase greatly.

Method used

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  • Pigeon Swarm Optimization Algorithm for Fog Wireless Access Network and Cooperative Caching Method Based on the Algorithm
  • Pigeon Swarm Optimization Algorithm for Fog Wireless Access Network and Cooperative Caching Method Based on the Algorithm
  • Pigeon Swarm Optimization Algorithm for Fog Wireless Access Network and Cooperative Caching Method Based on the Algorithm

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0034] This embodiment provides a cooperative caching method for a fog wireless access network, including the following steps:

[0035] S1: Divide the fog wireless access nodes in the fog wireless access network into several clusters; figure 1 As shown, each cluster contains several fog wireless access nodes, and each cluster has a fog wireless access node as the cluster head, which is connected with other fog wireless access nodes through control links; The fog wireless access points communicate with each other, and the fog wireless access points in different clusters do not communicate with each other. Users directly access the cluster head or other fog wireless access points in the fog wireless access point cluster according to their geographic location.

[0036] S2: specify the route for the user's file request to be forwarded in the network.

[0037...

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Abstract

The invention discloses a pigeon group optimization algorithm used in a fog wireless access network and a cooperative caching method based on the algorithm, including: (1) dividing fog wireless access nodes in a fog wireless access network into several clusters ;(2) Specify the routing of the user's file requests forwarded in the network; (3) The fog wireless access point calculates the local popularity of each file through the number of file requests received, and finally uses the improved pigeon group optimization algorithm to solve the fog wireless Optimal cache distribution in the access point cluster; (4) the cluster head adopts the improved pigeon group optimization algorithm to solve the cooperative strategy in the fog wireless access node cluster through the file request received and the cache table in the cluster; the present invention can Effectively reduce the average download delay of the network.

Description

technical field [0001] The invention relates to content cache technology, in particular to a pigeon group optimization algorithm used in a fog wireless access network and a cooperative cache method based on the algorithm. 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 mainly focuses on the existing architecture such as the cloud radio access network, and most of the research does not consider the cooperation between the base stations. [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 average download delay of files in the network will also increase greatly. Therefore, it is an urgent problem to find a low-latency cache placement strategy suitable for 5G / B5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/14H04L41/142
CPCH04W28/14H04L41/142
Inventor 蒋雁翔夏骋宇尤肖虎
Owner SOUTHEAST UNIV
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