Subcarrier power control method for low-orbit satellite and unmanned aerial vehicle cellular convergence network

Abstract

The invention discloses a subcarrier power control method for a low-orbit satellite and unmanned aerial vehicle cellular convergence network, relates to the technical field of wireless communication, and is characterized in that an unmanned aerial vehicle network adopts different subcarrier sets; the satellite network between the satellite user and the satellite base station adopts different subcarrier sets; establishing a first objective function by optimizing the subcarrier power of the unmanned aerial vehicle network to maximize the rate optimization problem, and solving the first objective function based on a deep reinforcement learning method to obtain a subcarrier power control strategy; and establishing a second objective function by optimizing the subcarrier power of the satellite network to maximize the rate optimization problem, and solving the second objective function based on a deep reinforcement learning method to obtain a subcarrier power control strategy. For a cellular network working at a low frequency band and a low-orbit satellite double-layer communication network working at a high frequency band, inter-network interference is eliminated through high and low frequency networking, the communication rate is ensured, and the resource configuration implementation complexity is reduced.

Description

technical field [0001] The invention relates to the technical field of wireless communication, more specifically, it relates to a subcarrier power control method of a low-orbit satellite and UAV cellular fusion network. Background technique [0002] With the large-scale increase of communication equipment and the increase of coverage requirements, a single terrestrial cellular network is constrained in terms of technology and cost. Therefore, based on the advantages of satellite network global coverage and high bandwidth, the construction of an intelligent satellite-cellular network fusion communication network not only effectively meets the design requirements of the new generation of communication systems, but also has an epoch-making safe and reliable comprehensive guarantee system. [0003] At present, due to the great differences in the working frequency band, signal system and power resources in the satellite-cellular air-ground fusion communication network, and the lo...

AI Technical Summary

Problems solved by technology

[0003] At present, due to the great differences in the working frequency band, signal system and power resources in the satellite-cellular air-ground fusion communication network, and the long distance between the satellite and the ground base station and the long transmission delay, the information interaction is complicated and it is difficult to intelligently allocate resources

The average method used in the prior art to allocate subcarrier power does not consider the influence of subcarrier channel differences, and a large number of iterations based on the convex optimization method has a huge computational complexity, and the convergence is difficult to guarantee.

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