High-precision positioning method combining mimo base station and non-mimo base station
A positioning method and high-precision technology, applied in location-based services, electrical components, wireless communications, etc., can solve the problems of high hardware requirements, low positioning accuracy, and high implementation costs, so as to reduce the number of needs and improve positioning Accuracy, the effect of reducing hardware requirements
Active Publication Date: 2021-04-30
HARBIN ENG UNIV
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Problems solved by technology
[0005] (1) The positioning method based on the signal arrival angle has high requirements on hardware conditions, and a large number of base stations need to be equipped with array antennas to obtain the signal arrival angle, which can only be applied to radar systems, and the implementation cost is too high
[0006] (2) The positioning method based on the time difference of arrival of the signal in the indoor environment has a large near-field error and low positioning accuracy
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[0052] The present invention will be further described below in conjunction with the accompanying drawings.
[0053] The present invention aims to propose a high-precision positioning method for joint MIMO communication base stations and non-MIMO assisted positioning base stations, which is characterized in that the MIMO communication base station provides AOA information while meeting the communication requirements, and the non-MIMO assisted positioning base station supplements TDOA information.
[0054] Due to the high hardware cost of MIMO array antenna base stations, it is not conducive to large-scale deployment. The present invention proposes a method that takes into account the accuracy of AOA positioning and the economy of TDOA positioning. It can reduce the cost of base station deployment while improving positioning accuracy; make full use of 5G communication base stations to save channel resources.
[0055] Such as figure 1 Shown is a schematic diagram of the basic ...
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The invention belongs to the technical field of wireless positioning, and in particular relates to a high-precision positioning method combining MIMO base stations and non-MIMO base stations. The method comprises the following steps: acquiring the base station identifier and the number of antennas of the MIMO communication base station; sending the PRS positioning reference signal by the MIMO communication base station; acquiring the base station identifier of the non-MIMO assisted positioning base station; sending the PRS positioning reference signal by the non-MIMO assisted positioning base station ; The mobile user equipment receives the positioning reference signal waveform from the MIMO communication base station and the non-MIMO assisted positioning base station, and selects the MIMO communication base station as the reference base station, and calculates the signal arrival time difference and the signal arrival angle; according to the obtained signal arrival angle and signal arrival Time-difference hybrid solution for the location of mobile user equipment. The invention reduces the required number of array antennas, lowers the hardware requirement of the base station, and saves the cost. The signal quality and the number of available base stations have been improved, and the stability of positioning has been improved. The positioning accuracy of the mobile user equipment is improved.
Description
technical field [0001] The invention belongs to the technical field of wireless positioning, and in particular relates to a high-precision positioning method combining MIMO base stations and non-MIMO base stations. Background technique [0002] At present, positioning and navigation technology has become an important basic technology for social security and national economic development. Although the positioning technology represented by Beidou and GPS is very mature, it is difficult to apply to indoor scenes due to signal occlusion and attenuation. However, the demand for indoor positioning is very extensive, such as: parking lot vehicle management, mine tunnel monitoring, and human and unmanned system navigation in large modern logistics warehouses. With the continuous improvement of 5G communication standards, the 5G communication era has arrived, and the high-precision indoor positioning technology in the dense indoor network environment of 5G networks has great positiv...
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IPC IPC(8): H04W4/02H04W64/00
CPCH04W4/023H04W64/00
Inventor 王慧强高凯旋吕宏武冯光升郭方方
Owner HARBIN ENG UNIV