5G NR uplink energy measurement method

Abstract

The invention provides a 5G NR uplink energy measurement method. The method comprises the following steps: receiving a downlink wireless signal transmitted by a 5G NR mobile base station and an uplink wireless signal transmitted by a 5G target terminal; analyzing the downlink wireless signal to obtain an NR downlink frame header position and uplink resource allocation information of a 5G target terminal; and on the basis of the NR downlink frame header position and the uplink resource allocation information, performing correlation calculation on the uplink wireless signal in the frequency domain window to obtain uplink energy of the 5G target terminal. Compared with a traditional field intensity meter positioning mode, the method has the advantages that the PUSCH configuration information of the target terminal is analyzed by using the downlink wireless signal transmitted by the 5G NR mobile base station, the uplink energy of the 5G target terminal is accurately calculated, and the 5G target terminal is accurately positioned according to the uplink energy.

Description

technical field [0001] The present invention relates to the field of mobile communications, and more particularly, to a 5G NR uplink energy measurement method. Background technique [0002] With the popularization and advancement of 5G NR terminals, it is urgent to accurately detect the NR terminal signals of 5G target terminals in 5G private network mobile communication and disaster search, so that the location of trapped persons can be accurately located, which is convenient for Rescue the trapped people in time. [0003] The previous detection method was applied in 2G, 3G, and 4G scenarios. Due to the frame structure of 5G NR, the method of obtaining the specific identifier C_RNTI of the target terminal has changed, the generation method of the 5G uplink PUSCH DMRS sequence, and the frequency domain, The time domain mapping method is different from other standards, so the previous uplink energy detection methods of other standards cannot be applied in 5G scenarios. [0...

AI Technical Summary

Problems solved by technology

[0003] The previous detection methods were applied in 2G, 3G, and 4G scenarios. Due to the changes in the frame structure of 5G NR and the way to obtain the specific identifier C_RNTI of the target terminal, the generation method of the 5G uplink PUSCH DMRS sequence, and the frequency domain, The time-domain mapping method is different from other standards, so the previous uplink energy detection methods of other standards cannot be applied in 5G scenarios

[0004] The detection method of the field strength meter does not take into account the specific identifier C_RNTI of the 5G target terminal in the design. When multi-user interference or the target distance is far away, the NR target signal source has been submerged in the interference, and the field strength meter cannot distinguish the target terminal. ; and the 5G signal attenuates faster than other standards, and the field strength meter method may not be able to search for the position of the frame synchronization point of the weak signal, thus increasing the difficulty of accurately detecting the 5G NR signal source

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