Millimeter-wave indoor intelligent passive coverage method

Abstract

The invention discloses a millimeter-wave indoor intelligent passive coverage method. Direct irradiation coverage is employed in a perpendicular incidence region (21), and a passive reflector (3) is employed for irradiation coverage in a shadow region (22). A signal from a base station (1) is reflected by the passive reflector (3), and then passes through an indoor window and other parts which allow millimeter waves to penetrate easily to arrive at the shadow region (22). The position of the passive reflector (3) enables the number of total reflections of the signal of the base station (1) from the passive reflector (3) to the shadow region (22) to be small as much as possible and enables the path (5) from the passive reflector (3) to the shadow region (22) to be short as much as possible.The wave beam direction (61) of a reflection wave (6) of the passive reflector (3), the number of wave beams and the polarization direction (62) can be adjusted and changed in real time according tothe business demands. The method can reduce the path loss of the millimeter waves, improves the independence of an MIMO channel, and can adjust the number of wave beams and characteristics of the shadow region (22) in real time according to the business demands. The method is characterized in energy saving performance, wide working band and low cost, and is liable to be integrated with a conventional indoor environment.

Description

technical field [0001] The invention relates to mobile communication, in particular to a millimeter wave indoor intelligent passive coverage method. Background technique [0002] The rate of mobile communication is getting higher and higher. In order to meet the needs of high rate, the operating frequency of mobile communication is also getting higher and higher, entering the millimeter wave frequency band. Compared with electromagnetic waves with lower frequencies, the path loss of millimeter waves is relatively large, especially because the wavelength is relatively short, and the blocking effect of obstacles is also relatively large. Indoors, the partitions between the various rooms constitute an obstacle for the propagation of millimeter waves. It is difficult for millimeter waves to penetrate walls. Although there are open doors or windows, due to the weak diffraction ability of millimeter waves and strong linear propagation, usually It is difficult for the beam directi...

AI Technical Summary

Problems solved by technology

These methods consume high power and cost

Moreover, the relay parameters cannot be adjusted in real time according to the dynamic changes of the business

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