Unmanned aerial vehicle and user collaborative cache placement method and device

A technology for drones and users, which is applied in the field of drone communication and can solve problems such as the placement strategy of drones and users in scenarios that do not consider the caching capabilities of drones and users.
CN111464231AActive Publication Date: 2020-07-28BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF POSTS & TELECOMM
Publication Date
2020-07-28

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Abstract

The invention provides an unmanned aerial vehicle and user collaborative cache placement method and device, and the method comprises the steps: obtaining the cache placement information of an unmannedaerial vehicle through adoption of an alternating direction multiplier method, and carrying out the iteration of the cache placement information of a user through a global greedy algorithm; continuously iterating the unmanned aerial vehicle cache placement and the user cache placement, and judging whether the maximum number of iterations is reached or not; if the number of iterations does not reach the maximum number, adding 1 to the number of iterations, and iterating the unmanned aerial vehicle cache placement information and the user cache placement information again; and if the number ofiterations reaches the maximum number, outputting cache placement information of the unmanned aerial vehicle and the user at the moment. According to the technical scheme provided by the embodiment ofthe invention, the technical problem that the unmanned aerial vehicle with the caching capability and the user caching placement decision are not jointly optimized in the prior art can be solved.
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Description

Technical field

[0001] The present invention relates to the technical field of drone communication technology, in particular to a method and device for collaborative buffer placement between drones and users. Background technique

[0002] With the rapid development of small drones that support wireless communication, drones have gradually been used in practical scenarios such as disaster recovery, hotspot coverage, relay communication, and information dissemination / data collection, becoming effective for solving certain specific communication scenarios. One of the technologies. In a cell with dense users, massive data requests will put tremendous pressure on the base station load. With its good flight characteristics, drones can be quickly deployed around users as an air base station, assisting the cellular network to provide communication services to ground users. Expand system capacity and improve user service quality. The repeated transmission of a small number of popular co...

Claims

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