Active antenna device and signal transmit-receive method thereof

Abstract

The invention provides an active antenna device and a signal transmit-receive method thereof. The active antenna device comprises digital processing modules, transmit-receive radio-frequency modules and an antenna array, and further comprises combiners, a passive antenna feeder phase-shift network and ANT (Antenna) slots, wherein the combiners are positioned between the transmit-receive radio-frequency modules and the antenna array and used for combining active antenna radio-frequency signals and RRU (Radio Remote Unit) radio-frequency signals, sending the combined signals to corresponding antenna oscillators in the antenna array, receiving signals from the antenna oscillators, performing power distribution to the signals to obtain active antenna signals and RRU signals, and respectively sending the acquired signals to both the transmit-receive radio-frequency modules and the passive antenna feeder phase-shift network; and the passive antenna feeder phase-shift network is connected with the plurality of combiners and used for performing power distribution to RRU transmitting signals received by the ANT slots to obtain a plurality of paths, respectively sending the plurality of RRU transmitting signals to the plurality of combiners, combining RRU receiving signals from the plurality of combiners and outputting the combined signals to RRUs. Owing to the multiplexed antenna array, the equipment utilization ratio is improved.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to an active antenna device and a method for sending and receiving signals. Background technique [0002] In the field of civil mobile communications, the mainstream architecture adopted by the current cell network deployment is the baseband processing unit (BBU) + remote radio unit (RRU), such as figure 1 As shown, the baseband pool unit (BBU) completes the baseband signal interaction with the remote radio unit (RRU) through optical fiber transmission, and the RRU completes the digital intermediate frequency processing and realizes the conversion with the radio frequency signal, and connects with the antenna array through the radio frequency jumper. Antennas transmit and receive signals. In actual field engineering erection, this architecture usually requires the RRU and antenna array to be erected at a high place, such as the top of a cell tower. In this architecture, the RRU...

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide an active antenna device and a method for sending and receiving signals thereof, so as to solve the problems of shortage of installation locations and waste of antenna resources during the use of the two architectures in a shared cell

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