A method for joint optimization of wireless resources and paths in a UAV communication network
A communication network and wireless resource technology, which is applied in the field of joint optimization of wireless resources and paths, and can solve problems such as frequent use of drones
Active Publication Date: 2021-07-09
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0003] Traditional UAV communication networks require manual route intervention. In future wireless communication network scenarios, UAVs will be used more frequently, and more flexible and free flight is required to provide auxiliary communication services for ground users.
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[0037] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0038] Such as figure 1 As shown, the method for joint optimization of wireless resources and paths in the UAV communication network provided by the embodiment of the present invention includes:
[0039] S1, the flight path of the UAV in the flight cycle is divided into several sub-cycles;
[0040] S2, in each sub-period, allocate channels to end users;
[0041] S3, according to the channel allocation result, obtain an approximate closed-form solution of the power of the terminal user, and allocate power to the terminal user according to the closed-form solution;
[0042] S4, according to the channel and power allocation results, establish the path optimization problem as a convex optimization problem, and perform path optimization according to the est...
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The invention provides a method for joint optimization of wireless resources and paths in a UAV communication network, which can improve spectrum utilization and energy efficiency of the UAV wireless communication network. The method includes: S1, dividing the flight path of the drone in the flight cycle into several sub-periods; S2, assigning channels to end users in each sub-period; S3, calculating the power of the end users according to the channel assignment result The approximate closed-form solution of , and allocate power to end users according to the closed-form solution; S4, according to the channel and power allocation results, establish the path optimization problem as a convex optimization problem, and perform path optimization according to the established convex optimization problem; S5, According to the power allocation result and the optimized path, return to S2 for iterative optimization until the energy efficiency value does not change or the number of iterations reaches the maximum number of iterations, and the optimal channel and power allocation scheme and path optimization scheme are obtained. The invention relates to the technical field of drone communication.
Description
technical field [0001] The invention relates to the technical field of unmanned aerial vehicle communication, in particular to a method for joint optimization of wireless resources and paths in an unmanned aerial vehicle communication network. Background technique [0002] As a newly derived wireless communication network, UAV wireless communication network has attracted more and more attention from academia and industry, and is expected to become a flexible and universal auxiliary communication method in the future. Compared with the traditional wireless cellular network, the UAV communication network has significant advantages such as low cost, easy deployment, strong mobility, and wide range of uses, so it has shown great application potential in military and civilian fields. According to statistics, the number of drones that will be put into use next year may reach 29 million. Such a large number of drones will give birth to more and more meaningful research. [0003] T...
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IPC IPC(8): H04B7/185H04W72/04H04W72/08
CPCH04B7/18543H04B7/18595H04W72/0473H04W72/542Y02D30/00Y02D30/70
Inventor 张海君李亚博隆克平
Owner UNIV OF SCI & TECH BEIJING