Method and device for antenna beam alignment

Abstract

The invention discloses a method and a device for antenna beam alignment. A home terminal is configured with a narrow beam antenna and a broad beam antenna, and an opposite terminal is configured with a narrow beam antenna and a broad beam antenna. The method comprises the steps of determining an optimum beam alignment direction and / or a suboptimum beam alignment direction by using the narrow beam antennas and the broad beam antennas; and establishing an optimum communication link according to the optimum beam alignment direction and / or establishing a suboptimum communication link according to the suboptimum beam alignment direction. According to the invention, the optimum communication link and / or the suboptimum communication link are / is established through using the narrow beam antennas and the broad beam antennas, thereby solving a problem of establishing a communication link by using the narrow beam antennas in relevant technologies, and having the effects of keeping the link being continuous and reducing the time spent on re-establishing data transmission connection.

Description

technical field [0001] The present invention relates to the communication field, in particular, to an antenna beam alignment method and device. 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 Gps, and the working frequency band used can be used without authorization. Since the electromagnetic spectrum is a strong absorption peak near 60 GHz, the propagation attenuation of electromagnetic waves in this frequency range is very large. Therefore, the typical transmission distance of 60 GHz millimeter wave communication technology does not exceed 10...

AI Technical Summary

Problems solved by technology

This configuration method has obvious shortcomings. For example, because the beam is too narrow and the channel fading is too large, when the two beams are not aligned, the link from the transmitter to the receiver may be interrupted, resulting in the inability of the antennas at both ends to communicate. Information exchange and beam direction pairing based on this; as another example, 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, the antenna beams at both ends have a total of N 2 possible combinations, and the optimal combination requires N 2 Scans can be found, which will undoubtedly increase the delay in establishing a connection

Even if the optimal transmission path between the transmitter / receiver is found and established through the above method of beam direction step scanning, there may be situations where people or other objects are blocked in the middle of the transmission path. In this case, it is equivalent to Strong shadow fading occurs in the middle of the transmission path, and the significantly increased path loss caused by shadow fading will lead to a sharp decline in the data transmission capacity of the existing transmission link or even interrupt the existing data transmission channel

[0005] For the problem of using narrow beam antennas to establish communication links in related technologies, no effective solution has been proposed so far

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