A resource allocation method for a dual-frequency air access network

Abstract

The invention discloses a resource allocation method of a dual-frequency air access network. The UHF and S frequency bands are used to provide the connection for the ground users in the air base station, and the system model of the dual frequency air access network is established. The airship hovers within 50 to 950 meters on the air-to-ground channel, and the large-scale fading measurement in 785and 2160 MHz frequency bands is carried out simultaneously. Then, based on the obtained channel model, a spectrum allocation algorithm with low complexity is established. Then, the optimal transmission power of each user is obtained by Lagrange dual principle, and the spectrum allocation algorithm is proposed. Then, the iterative power allocation algorithm is proposed to obtain the optimal transmission power of each user to maximize the network throughput. The invention solves the challenge problem of using ABS to provide wide area coverage access network with high network throughput. To improve the coverage and performance of the air access network, the dual-frequency measurement results provide a new perspective for the A2G propagation characteristics in the airborne access scenario, and lay the foundation for the cross-layer design of DBAA scheme.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a resource allocation method of a dual-frequency air access network, which can be used for the deployment of various air base stations and the design of the air access network. Background technique [0002] With the development of communication and aviation technology and related regulations, unmanned aerial vehicles such as drones, airships, and balloons are increasingly used as air base stations (ABS). Due to airspace regulations, these aerial platforms are often deployed at low altitudes. Communication equipment is usually loaded on these low-altitude platforms (LAPs), which act as mobile base stations (BSs) and provide access links for ground user equipments (UEs). Air Access Networks (ABANs) are critical in many application scenarios. In the face of public safety issues such as emergency rescue, disasters, or social events, ABS can be deployed qu...

AI Technical Summary

Problems solved by technology

Measurements at different frequencies are not placed in the same physical environment, making accurate comparisons of propagation characteristics between the two frequency bands difficult

Secondly, most of the above methods are to provide traditional point-to-point data links for aircraft, while the current problem of using ABS to provide connectivity for a large number of users is very important

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