Method and device for beamforming

Abstract

An embodiment of the invention relates to the technical fields of wireless communications, particularly to a method and a device for beamforming, which are used for solving the problems that downlink beamforming in the prior art is obtained by calculating according to channel estimation of uplink signals received by a base station, so determined forming factors are not reliable when the uplink signals of the base station are disturbed, thereby easily generating errors in direction of beams, greatly reducing signal receiving gain of a terminal, and disturbing signal receiving of other terminals under the same base station. The method of the embodiment of the invention comprises the following steps of: comparing a signal quality parameter value of the terminal with a beamforming threshold; determining a downlink forming weight of the terminal according to the comparison result; and performing the beamforming according to the downlink forming weight. The method of the embodiment of the invention can improve reliability of the downlink forming, reduce direction errors of beams and improve the signal receiving gain of the terminal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and equipment for beam forming. Background technique [0002] Smart antenna technology is one of the key technologies of TD-SDCMA (Time Division Synchronized Code Division Multiple Access, Time Division Synchronized Code Division Multiple Access). The directivity can enhance the spatial isolation, thereby reducing the interference between terminals. [0003] Currently, common beamforming methods all use signal diversity in the uplink and beamforming in the downlink. Based on the communication mode of TDD (Time division duplex, time division duplex), the uplink and downlink work on the same carrier, and the transmission characteristics are consistent, so the uplink channel parameters can be given to preprocess the downlink data before sending. [0004] The basic steps are: [0005] 1. Perform channel estimation according to the received uplink si...

AI Technical Summary

Problems solved by technology

[0010] Embodiments of the present invention provide a beamforming method and device to solve the problem in the prior art that the downlink beamforming is calculated based on the channel estimation of the uplink signal received by the base station, when the base station The uplink signal is interfered, which will cause the determined forming factor to be unreliable, so that the beam directionality error is prone to occur, the received signal gain of the terminal is greatly reduced, and it will interfere with the received signal of other terminals under the same base station.

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