Method and device for measuring target terminal uplink signal strength in complex environment

Abstract

The invention provides a method and device for measuring the uplink signal strength of a target terminal in a complex environment. By performing operations such as descrambling and decoding demodulated data on the transmitted signal and related information monitored by the positioning equipment, a certain signal can be measured more accurately. The uplink signal of a target terminal can also be used to distinguish the target terminal signal to be detected from the interference signal through the CRC check weighting in the scene of complex environment and signal superimposition. Therefore, the technical effect of improving the measurement accuracy of the uplink signal of the target terminal is achieved.

Description

technical field [0001] The invention relates to the field of 4G mobile communication, in particular to a method and device for measuring the uplink signal strength of a target terminal in a complex environment. Background technique [0002] With the development of mobile communications and the popularization of LTE (Long Term Evolution) mobile terminals, a technology based on positioning equipment to detect and control the target terminal, and then detect the location of the target terminal through private network wireless communication is widely used in public security departments Among them, this kind of technology can not only support the work of our country's public security front, protect the interests of the people, avoid major economic losses, but also search and rescue the trapped people in time when the area is hit by a disaster. In the prior art, the commonly used 4G terminal uplink signal strength measurement methods are mainly divided into two types: the first on...

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Problems solved by technology

[0004] Among them, the first method detects the uplink signal in the entire bandwidth, which leads to a large increase in interference sources, and the interference signal and the signal to be detected are distributed in the entire frequency domain bandwidth and cannot be distinguished, resulting in an error in the uplink signal strength of the detected target terminal. Larger and cannot be used in complex environments

The second method is to detect the fixed RB scheduling position of the target terminal in the frequency domain. Although other interference signals in the frequency domain can be filtered out to a certain extent, the superimposed interference signal and the signal to be detected in the same position scheduling are very different. Indistinguishable, so it is impossible to accurately measure the uplink signal strength of the target terminal in a complex environment

[0005] It can be seen that there is a technical problem in the prior art that there is a large error in the measurement of the uplink signal

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