Unmanned aerial vehicle time-frequency resource allocation method based on gradient projection
A technology of time-frequency resources and allocation method, applied in the field of unmanned aerial vehicle communication, can solve the problems of limited time-frequency resource allocation, shortage of spectrum resources, and increased mutual interference and influence of available resources that have not been studied before.
A technology of time-frequency resources and allocation method, applied in the field of unmanned aerial vehicle communication, can solve the problems of limited time-frequency resource allocation, shortage of spectrum resources, and increased mutual interference and influence of available resources that have not been studied before.
CN108123772AActive Publication Date: 2018-06-05NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0054] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0055] Unless the context clearly states otherwise, the number of elements and components in the present invention can exist in a single form or in multiple forms, and the present invention is not limited thereto. Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It can be understood that the term "and / or" used herein refers to and covers any and all possible combina...
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The invention provides an unmanned aerial vehicle time-frequency resource allocation method based on gradient projection. The method comprises the following steps: determining amount of unmanned aerial vehicle, setting a system authorization channel set, setting a system maximum power upper limit and other environment parameters; constructing a spectrum allocation matrix and an adjacent channel matrix to introduce the original problem, simplifying max-min hybrid planning problem which is originally complex by using problem structural characteristics. An iteration algorithm of the gradient projection is proposed to solve the problem; a ground control station performs power and channel allocation on the unmanned aerial vehicle through a remote channel according to the maximum SINR value of each unmanned aerial vehicle, thereby finishing the unmanned aerial time-frequency resource allocation method design. The method provided by the invention has the advantages that the reasonable allocation of the limited spectrum resource is realized in the premise of improving the reliability of a control signal received by each unmanned aerial vehicle and guaranteeing the maximum consumption powerconstraint of the system through the unmanned aerial vehicle time-frequency resource allocation method based on the gradient projection.
Description
technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle communication, and specifically relates to a method for allocating time-frequency resources of an unmanned aerial vehicle based on gradient projection. Background technique [0002] With the improvement of sensing technology and computing power, drones are gradually becoming a common choice in applications such as urban search, military reconnaissance and agricultural supervision. However, due to challenges such as the exponential growth of UAV wireless service demand and the shortage of spectrum resources, UAV communication is facing a severe test. At the same time, the collaborative operation of multiple UAVs also brings many challenges that need to be considered. Among them, a key technical challenge is that the security and stability of UAV communication requires a certain robustness of the control signal itself, and the quality of the control signal is very sensitive to chann...
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Patent Timeline
05 Jun 2018
Publication
CN108123772A
- IPC
- H04B17/391; H04B17/382
- CPC
- H04B17/382; H04B17/391
- Inventors
- 吴启晖; 陈志勇