The invention relates to the field of low-altitude communication network planning methods, in particular to a 5G three-dimensional coverage and
capacity planning design method for low-altitude economy, which comprises the following steps: performing airspace range limitation and application scene division on a target airspace, establishing a mobile model of a low-altitude terminal, and providing dynamic input for
simulation; the method comprises the following steps: establishing a dual-frequency
heterogeneous network, and determining
base station addresses covering targets at different heights and meeting different
signal station spacing; performing three-dimensional coverage and quality
simulation on the established dual-frequency
heterogeneous network, performing network KPI evaluation on the
simulation until the standard is reached, and outputting a
network deployment planning scheme; deploying according to a
network deployment planning scheme, predicting low-altitude
service flow, and adjusting a
beam direction and a PRB reservation ratio to realize on-demand allocation of resources; and carrying out actual measurement on the deployed network, collecting an air measurement index, comparing a comparison deviation between the air measurement index and a simulation result, and carrying out fine adjustment on the network according to the comparison deviation. According to the invention, diversified communication requirements are met, and the success rate of terminal access is improved.