Wave beam alignment method, device and system for millimeter wave communication system

Abstract

The invention discloses a wave beam alignment method, device and system for a millimeter wave communication system. The wave beam alignment device is provided with a high-gain narrow-wave-beam directional antenna and a low-gain wide-wave-beam directional antenna, and comprises a link establishment module and a wave beam alignment module, wherein the link establishment module for establishing a control signaling link with an opposite terminal through the low-gain wide-wave-beam directional antenna, and the wave beam alignment module is used for interacting channel quality information in the different narrow-wave-beam directions with the opposite terminal through the control signaling link and performing wave beam alignment of the high-gain narrow-wave-beam directional antenna with the opposite terminal. If the device serves as a transmitting device, the opposite terminal serves as a receiving device; or if the device serves as the receiving device, the opposite terminal serves as the transmitting device. The system comprises the transmitting device and the receiving device. The wave beam alignment method, device and system can ensure continuity of a link between the transmitting device and the receiving device during wave beam direction scanning, meanwhile the total scanning times is decreased from N2 to 2N, and the time for establishing data transmission connection is greatly shortened.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a beam alignment method, device and system of a millimeter wave communication system. Background technique [0002] With the improvement of device manufacturing level and continuous maturity of technology, 60GHz millimeter wave wireless communication technology has gradually moved from theoretical research to practical application. The biggest advantage of 60GHz millimeter wave technology is that the transmission bandwidth is very wide. Near the 60GHz frequency band, it can provide up to 5GHz continuous transmission bandwidth, the transmission rate can reach several Gbps, and the working frequency band used can be used without authorization. Since the electromagnetic spectrum has a strong absorption peak at 60 GHz, the propagation attenuation of electromagnetic waves in this frequency range is very large. Therefore, the typical transmission distance of 60 GHz millime...

AI Technical Summary

Problems solved by technology

There are two obvious deficiencies in this configuration method,

[0005] First: Because the beam is too narrow and the channel fading is too large, when the two beams are not aligned, the link from the transmitting end to the receiving end may be interrupted, resulting in the inability of the antennas at both ends to exchange information and based on this. beam scanning;

[0006] Second: Since both the transmitting end and the receiving end need to perform beam scanning, assuming that the antenna beams at each end have N adjustable orientations, there are N2 possible combinations of antenna beam orientations at both ends, and the optimal combination needs to be performed N2 times Scanning can be found, which will undoubtedly increase the delay in establishing a connection

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