Cross-Layer Propagation Optimization Model of Electric Power Wireless Signals for High-Rise Buildings

In the high-rise building environment, in order to determine the signal coverage of the smart meter wireless communication module, it is essential to establish a wireless signal propagation model across floors. In this paper, transmission attenuation factor and diffractive gain factor are introduced based on the traditional multi-wall and multi-floor model (MWMF) for the electric power industry's 230MHz exclusive frequency band and 470MHz civil metering instrument frequency band, and an optimization model for the cross-layer propagation of wireless signals in the corresponding frequency band is proposed. In order to verify the accuracy of the model, the frequency sweep method is used to measure the propagation attenuation of the wireless signal in the corresponding frequency band in high-rise buildings and the model is fitted. The results show that the proposed cross-layer propagation optimization model has a better signal fitting effect. Compared with the MWMF model, the mean square error (MSE) in the measured data fitting can be reduced by up to 17%, which provides a theoretical basis for the formulation of local wireless communication strategies for smart meters.