Adaptive millimeter wave beam tracking method based on extended Kalman filtering

An extended Kalman and adaptive technology, applied in diversity/multi-antenna systems, space transmit diversity, electrical components, etc., can solve the problems of inability to achieve effective tracking, rapid accumulation of errors, mutual influence, etc., to extend the effective tracking time, The effect of reducing overhead and improving tracking accuracy

Pending Publication Date: 2022-03-29
HANGZHOU DIANZI UNIV
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Benefits of technology

This technology uses an adaptation technique called Adapted Millimeter Wave Beam Tracking (AMFT) that can improve its ability to accurately locate signals at varying speeds without requiring knowledge about their geographic location or knowing specific parameters like power level for better performance. It also allows for more efficient use of resources such as antennas while reducing interference from other sources.

Problems solved by technology

Technological Problem: Miniwave Communications Terminal (MTC), also known as 5th generation Mobile Network Interference System (MIMO), faces challenges when aligning signals transmitted from multiple base stations simultaneously without wasting resources like power. Existing solutions require manual intervention while achieving precision in beam alignment, leading to increased overhead costs compared to more flexible techniques. There is therefore a technical problem addressed in this patents relating to developing a solution capable of automatically adjusted and optimized beam pointing towards specific situations quickly and efficiently.

Method used

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  • Adaptive millimeter wave beam tracking method based on extended Kalman filtering
  • Adaptive millimeter wave beam tracking method based on extended Kalman filtering
  • Adaptive millimeter wave beam tracking method based on extended Kalman filtering

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Embodiment Construction

[0068] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0069] The method disclosed in the present invention does not need to know the instantaneous gain of the channel, but only needs to take the angle change of the channel as the quantity to be estimated, and can automatically adjust the frequency of beam tracking in real time according to the rate of change of the angle of the communication channel, while ensuring the tracking accuracy, it is effective Extend the time of beam tracking and reduce the overhead of beam tracking.

[0070] The present invention is an adaptive millimeter-wave beam tracking method based on extended Kalman filter, and its algorithm flow is as follows figure 1 As shown, this example includes the following steps:

[0071] Consider the following mmWave communication field: the transmitting end Tx sends the pilot signal, and the receiving end Rx receives the pilot signal.

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Abstract

The invention discloses a self-adaptive millimeter wave beam tracking method based on extended Kalman filtering. According to the beam tracking method disclosed by the invention, the maximum tracking interval and the minimum tracking interval are determined according to the change rate of a channel angle, and then whether the extended Kalman filter is used for tracking or not is judged by comparing the change of a signal-to-noise ratio after beam forming before and after tracking. According to the method disclosed by the invention, the instantaneous gain of the channel does not need to be known, and the beam tracking frequency can be automatically adjusted in real time according to the rate of the angle change of the communication channel only by taking the angle change of the channel as the to-be-estimated quantity, so that the beam tracking time is effectively prolonged and the beam tracking overhead is reduced while the tracking precision is ensured.

Description

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Claims

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Application Information

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Owner HANGZHOU DIANZI UNIV
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