A Beam Tracking Method for Unmanned Aerial Vehicle Millimeter Wave Communication
A drone and millimeter-wave technology, applied in radio transmission systems, diversity/multi-antenna systems, space transmit diversity, etc., can solve the problem of reduced communication rate, signal departure angle/arrival angle tracking lag or even inaccuracy, and difficulty in tracking effect and other issues, to achieve the effect of improving spectral efficiency and reducing delay error
A drone and millimeter-wave technology, applied in radio transmission systems, diversity/multi-antenna systems, space transmit diversity, etc., can solve the problem of reduced communication rate, signal departure angle/arrival angle tracking lag or even inaccuracy, and difficulty in tracking effect and other issues, to achieve the effect of improving spectral efficiency and reducing delay error
CN109743093BActive Publication Date: 2020-12-04BEIJING UNIV OF POSTS & TELECOMM
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0053] The purpose of the present invention is to use the position and attitude information of the low-frequency feedback while the sensor provides its own position and attitude information through the originating UAV, and use the machine learning method based on the Gaussian process to carry out the receiving end UAV in the future T time slots. For the prediction of position and attitude information, the corresponding coordinate transformation is carried out based on the prediction results, and the corresponding beam angle and beamforming vector are calculated by using the geometric relationship, so as to realize the high-efficiency millimeter wave beam tracking under the condition of high-speed movement and attitude change of the UAV.
[0054] Through the description of the embodiments below, the specific implementation of the present invention includes the shape, structure, mutual position and connection relationship between the various parts, the function and working princip...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an unmanned aerial vehicle millimeter wave communication beam tracking method. A time slot structure of unmanned aerial vehicle millimeter wave communication is designed into an exchange time slot and T tracking time slots, and the process in the exchange time slot comprises receiving MSI feedback; Calculating an actual beamforming vector according to the actual position and attitude information of the receiving-end unmanned aerial vehicle in MSI feedback, and predicting the position and attitude information of the receiving-end unmanned aerial vehicle in T tracking time slots in the future; Transmitting information through the actual beamforming vector, Wherein the process in the tracking time slot comprises the steps of calculating a predicted beam forming vectoraccording to a predicted position and attitude information; And transmitting information through the prediction beam forming vector. The position and the posture of the unmanned aerial vehicle are effectively tracked, the millimeter wave communication spectrum efficiency of the unmanned aerial vehicle can be improved under the condition that the unmanned aerial vehicle rapidly moves, channel stateinformation feedback of pilot frequency and a receiving end is not needed, and the time delay error difference between the unmanned aerial vehicle and the real motion state can be reduced.
Description
technical field [0001] The invention relates to the technical field of millimeter-wave beam tracking of unmanned aerial vehicles, in particular to a method for tracking beams of millimeter-wave communication of unmanned aerial vehicles. Background technique [0002] mmWave beam tracking is a technique for maintaining mmWave communication links. Millimeter-wave communication uses narrow beams to compensate for the high path loss of millimeter-wave propagation, and obtains corresponding analog beamforming vectors through beam tracking technology to maintain millimeter-wave beam alignment, which can make full use of antenna array gain, maintain millimeter-wave communication links, and improve mmWave communication performance. [0003] At present, the millimeter-wave beam tracking method mainly uses auxiliary information such as position or directly tracks the signal arrival angle / departure angle. For example, in "Robust beam-tracking for mmWave mobile communications", the ext...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
04 Dec 2020
Publication
CN109743093B
- IPC
- H04B7/06; H04B7/08; H04B7/185
- Inventors
- 许文俊; 张婧琳