Channel detection method in frequency division duplex mode, radio frequency circuit and electronic equipment

Abstract

The present invention provides a channel detection method in frequency division duplex mode, a radio frequency circuit and electronic equipment. The radio frequency circuit includes: a first radio frequency module and a second radio frequency module, and the first radio frequency module and the second radio frequency The modules are respectively connected to the first end of the switch module; at least two antennas connected to the second end of the switch module; the antennas connected to the first radio frequency module and the second radio frequency module through the switch module are different; There is at least partial frequency overlap between the receiving frequency of the first frequency band in which the first radio frequency module works and the transmitting frequency of the second frequency band in which the second radio frequency module works. When the present invention detects the downlink channel of the first frequency band in the frequency division duplex mode, the second radio frequency module is connected to the downlink antenna of the first frequency band, and the first radio frequency module is switched to other antennas to utilize the presence of the first frequency band The SRS signal is sent in the second frequency band with overlapping frequencies to implement the downlink channel quality assessment for the first frequency band, thereby adjusting the downlink resource configuration.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a channel detection method, a radio frequency circuit and an electronic device in a frequency division duplex mode. Background technique [0002] Mobile devices have become an indispensable tool in users' daily lives. With the evolution of streaming media, people's demand for high-definition live broadcasts, videos and other large traffic has become a trend. As we all know, 5G networks and other support beamforming technology, which can be directionally transmitted to the terminal. If the base station wants to transmit in a directional manner, it must first detect the location of the terminal, the quality of the transmission path, etc., so that the resources of the base station can be allocated to each terminal more accurately. Sending the SRS information by the terminal is one of the ways for the base station to detect the location and channel quality of t...

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a method to solve the problem that the uplink channel cannot be used to estimate the downlink channel in the existing frequency division duplex mode

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