Power balance control method of antenna port of LTE MIMO system

Abstract

The invention discloses a power balance control method of an antenna port of an LTE MIMO system. The method is mainly characterized in that a path damage detection module is added in a repeater of the LTE MIMO system, and a passive electronic label is attached to the inner side of a dual polarized antenna in a matched mode. A radio-frequency signal transmitted by the path damage detection module reaches the dual polarized antenna port through a combiner and the like, the passive electronic label is activated, after being activated, the passive electronic label transmits the radio-frequency signal to the path damage detection module through the antenna, the path damage detection module receives the radio-frequency signal sent by the electronic label, the path damage value between an output port in an MIMO repeater device and the dual polarized antenna port is calculated through a data processing unit, data information is transmitted to a monitoring unit, and the monitoring unit automatically adjusts power output values of two down links in the repeater of the LTE MIMO system according to path damage value information, transmitted by the data processing unit, of different feeder circuits. According to the method, power imbalance at the antenna port can be timely found, and the power of the antenna port can be automatically adjusted.

Description

technical field [0001] The invention relates to the field of information and communication technology, in particular to a method for controlling the power balance of an antenna port of an LTE MIMO system. Background technique [0002] With the increasing demand for domestic mobile data services, major domestic operators have started the trial commercial network construction of LTE (Long Term Evolution), and indoor coverage network construction is the top priority of the second phase of 4G network planning. MIMO (Multiple-Input Multiple-Out-put) technology is one of the core technologies of 4G, which plays an important role in improving network speed and quality. 4G new indoor coverage system generally adopts dual feeder MIMO system. A large number of engineering tests have shown that: the end of the dual-feed MIMO system - the power of the antenna port must be roughly equal, that is, the power values ​​​​of the two antenna ports are balanced, in order to ensure the highest ...

AI Technical Summary

Problems solved by technology

However, the long-term operation of the network will inevitably have different effects on the power value of a group of dual-feeder antenna ports due to the aging of devices and changes in ambient temperature, which will cause the power imbalance of the group of antenna ports, thereby affecting the indoor coverage area, Communication rate and communication quality

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