Compensation method for intelligent antenna system after failure of part of channels

Abstract

The present invention discloses a method for compensating when part of channels in the intelligent antenna system lapses. The invention aims at the problem that the downward beam shaping capacity of the intelligent antennae will dramatically decline when a certain or a plurality of channels in the intelligent antenna system lapse. The compensating method of the invention in the intelligent antenna system when part channels lapse comprises the steps of: (1) obtaining the number of the disabled ascending descending channels, the disabled channel number and the lapse style; (2) sharing equally the business of all the user covered by the intelligent antenna system to each effective descending antenna to transmit if the lapse style is that the shaping antenna of the special channel is damaged; and choosing the channel with the maximal transmitting power in the effective descending channel or adapting the common signal channel to compensate the weight by the descending beam shaping weight if the lapse style is that the shaping antenna of the common signal channel is damaged. The invention perfects the covering of the intelligent antenna system to the small district and increases the capacity of the small district and the speech quality of the user.

Description

Technical field [0001] The invention relates to a compensation method after partial channel failures in a smart antenna system, in particular to a base station adopting smart antenna technology in the communication field. Background technique [0002] Smart antenna technology is a new technology that has received more and more attention in the field of mobile communication. Especially in the working mode of TDD, the uplink and downlink channels use the same carrier frequency. It can be considered that the uplink and downlink channels of the same user are completely symmetrical. Conducive to the use of smart antenna technology. [0003] The smart antenna system consists of a set of antenna arrays, connected transceivers and advanced digital signal processing algorithms. The smart antenna can adjust the beam direction adaptively according to the change of the user's position, so that the main lobe is aimed at the desired user, and the null or side lobes are aimed at the undesired u...

AI Technical Summary

Problems solved by technology

This is mainly manifested in the fact that, for public channels, the out-of-roundness of the downlink beamforming pattern will be significantly worse during the downlink channel, thereby affecting the coverage of the cell; for dedicated channels, the downlink beamforming pattern will The main lobe of the network may not be able to point to the direction of the desired user, and at the same time may increase the side lobe and null, which directly affects the call quality, coverage and capacity, and the uplink DOA estimation may not be accurate when the uplink fails

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