Method for Power Balance Control of Antenna Ports in LTE MIMO System

Abstract

The invention discloses a power balance control method for an antenna port of an LTE MIMO system. The method mainly includes adding a path loss detection module in an LTE MIMO repeater, and affixing a passive electronic label on the inner side of a dual-polarized antenna in cooperation. The radio frequency signal transmitted by the path loss detection module reaches the port of the dual-polarized antenna via a combiner, etc., and activates the passive electronic tag. After the passive electronic tag is activated, the radio frequency signal is transmitted to the path loss detection module through the antenna, and the path loss detection module receives From the radio frequency signal sent by the electronic tag, the data processing unit calculates the path loss value between the output port of the MIMO relay device and the dual-polarized antenna port, and transmits the data information to the monitoring unit. The path loss value information of different feeder lines automatically adjusts the power output values ​​of the two downlinks of the LTE MIMO repeater. The invention can detect the unbalanced power of the antenna port in time, and automatically adjust the power of the antenna port.

Description

technical field [0001] The invention relates to the technical field of information and communication, 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 mobile data services in China, 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 d...

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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