UAV Jitter-Resistant Beamforming for Millimeter-Wave Communication
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Solution Overview
Problem
Unmanned aerial vehicle (UAV) jitter caused by body disturbances leads to estimation errors in angle-of-arrival (AoA) or angle-of-departure (AoD), resulting in performance degradation of UAV millimeter-wave communication systems.
Innovation Solution
A communication method and apparatus that acquire UAV jitter information by measuring or exchanging information between UAV nodes and counterpart nodes, using jitter reference signals and pilot signals, to determine robust transmission and reception techniques, such as configuring beamformers or beam codebooks, to mitigate the effects of UAV jitter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming technology is used to overcome path attenuation and improve signal quality, then communication performance is improved, but communication reliability deteriorates due to UAV jitter causing AoA/AoD estimation errors
Solution Approach 1:
The system performs preliminary actions by acquiring UAV jitter information before actual communication occurs. The UAV node measures jitter characteristics using embedded sensors and exchanges jitter reference signals with counterpart nodes to obtain statistical information about azimuth angle variations. This preliminary acquisition of jitter information enables the system to prepare appropriate beamforming configurations in advance, preventing communication failures caused by sudden UAV movements.
Solution Approach 2:
The system dynamically adapts beamforming parameters based on acquired jitter information. The beamformer or codebook is configured according to the statistical characteristics of UAV jitter (mean and variance of azimuth angles), allowing the system to dynamically adjust to the actual jitter conditions. This dynamic configuration enables the system to maintain optimal beamforming performance despite the unpredictable movements of the UAV.
2Reliability
If the UAV node uses embedded sensor devices to measure azimuth angles for jitter compensation, then communication robustness is improved, but device complexity increases
Solution Approach 1:
The embedded sensor devices on the UAV node serve multiple functions: they measure azimuth angles for beamforming operations and simultaneously measure jitter characteristics for robust communication. The same sensor infrastructure is utilized for both purposes, eliminating the need for separate dedicated jitter measurement devices and reducing overall system complexity.
Solution Approach 2:
The UAV node performs self-measurement of its own jitter characteristics using its embedded sensors, without requiring external assistance. The node independently acquires jitter information and uses it for its own beamforming configuration, making the system self-sufficient and reducing the need for additional complex coordination mechanisms.
3Reliability
If the system exchanges jitter reference signals and processes statistical information to determine beamforming parameters, then communication performance is improved, but processing time increases
Solution Approach 1:
The system performs all necessary jitter information acquisition and beamforming parameter determination in advance, before actual data transmission occurs. By completing the statistical analysis of azimuth angles and configuring the beamformer or codebook beforehand, the system eliminates processing delays during the critical communication phase, ensuring timely and reliable data transmission.
Data Source
AI summary
A method for performing unmanned aerial vehicle (UAV) jitter-resistant communication in a communication system using a UAV, performed by a UAV node, may comprise: acquiring UAV jitter information for the UAV node; and determining a UAV transmission and reception technique based on the UAV jitter information, wherein the UAV transmission and reception technique includes determination or configuration of a beamformer or a codebook to perform signal transmission and reception robust against a UAV jitter between the UAV node and a counterpart node.