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Unmanned aerial vehicle relay transmission control method based on non-orthogonal multiple access

A non-orthogonal multiple access, transmission control technology, applied in wireless communication, electrical components, broadcast service distribution, etc., can solve the problem of not considering the impact of user packet transmission performance, and achieve the effect of improving efficiency

Pending Publication Date: 2021-09-21
TONGJI UNIV
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AI Technical Summary

Problems solved by technology

However, the previous research work did not consider the impact of user grouping on transmission performance, which is a very effective solution to improve the spectral efficiency of the system in practical applications.

Method used

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  • Unmanned aerial vehicle relay transmission control method based on non-orthogonal multiple access
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  • Unmanned aerial vehicle relay transmission control method based on non-orthogonal multiple access

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Embodiment

[0027] Such as figure 1 As shown, a UAV relay transmission control method based on non-orthogonal multiple access. The UAV acts as a relay station and establishes communication links with the base station and the user terminal where the user is located. Multiple user terminals are combined to form User terminal group, the user terminal is divided into high-level user terminal and low-level user terminal according to the corresponding channel gain, the channel gain of the high-level user terminal is higher than the channel gain of the low-level user terminal, and at least one high-level user terminal is set in the user terminal group , the low-level UEs are assigned to the UE group where the high-level UEs belong, the low-level users are allocated according to their channel gain and channel conditions, and the high-level users are allocated to the UE group before the low-level users.

[0028] In this embodiment, there are M user terminals U 1 ,U 2 ,...,U M .

[0029] The nu...

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Abstract

The invention relates to an unmanned aerial vehicle relay transmission control method based on non-orthogonal multiple access, which is characterized in that an unmanned aerial vehicle serves as a relay station and establishes communication links with a base station and user sides where users are located; a plurality of user sides are combined to form a user side group; the user sides are divided into high-grade user sides and low-grade user sides according to corresponding channel gains; the channel gains of the high-grade user sides are higher than the channel gains of the low-grade user sides; at least one high-grade user side is arranged in the user side group; the low-grade user sides are allocated to the user side group where the high-grade user sides are located; the low-grade users are allocated according to channel gains and channel conditions of the low-grade users, and the low-grade users perform user side group allocation before the low-grade users. Compared with the prior art, the method has the advantages that the spectrum efficiency of the unmanned aerial vehicle relay network based on NOMA is improved, so that the throughput performance of the unmanned aerial vehicle relay network is effectively improved.

Description

technical field [0001] The invention relates to the technical field of UAV data transmission, in particular to a method for controlling UAV relay transmission based on non-orthogonal multiple access. Background technique [0002] With the gradual maturity of drone technology and the reduction of manufacturing costs, the application of drones in the communication industry has attracted more and more attention. With drones equipped with communication facilities, communication links can be quickly established. At the same time, we can flexibly deploy or recycle UAVs to solve the tidal effect of business needs and reduce network costs and energy consumption. These advantages make UAV-assisted communication attract much attention. In addition, compared with traditional single-hop transmission, relay transmission communication can effectively extend the coverage of wireless networks, reduce the path loss of wireless channels, and improve the reliability of data transmission. Th...

Claims

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Application Information

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IPC IPC(8): H04W4/08H04W16/14H04W24/02H04W40/22
CPCH04W4/08H04W16/14H04W24/02H04W40/22
Inventor 张荣庆彭腾卉李冰赵生捷
Owner TONGJI UNIV
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