Beam Ridge Information for Accurate Position Estimation
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately estimating the position of user equipment (UE) due to limitations in angle estimation techniques, particularly when interpolating beam ridge information along both Azimuth and elevation angles.
Innovation Solution
The method involves determining and transmitting beam ridge information associated with reference signals for positioning (RS-P) from a first wireless node to a position estimation entity. This information includes the Azimuth or boresight elevation angle associated with the highest beam gain for the RS-P, enabling more accurate angle estimation through enhanced interpolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam ridge information is shared for position estimation, then measurement precision is improved, but loss of information occurs due to potential divulgence of sensitive beam shape information
Solution Approach 1:
The patent extracts only the essential beam ridge information (azimuth and elevation angles representing the main lobe direction) from the complete beam shape information. This extraction allows position estimation to be performed using only the critical directional data while leaving the sensitive detailed beam shape characteristics retained at the network side, thus resolving the contradiction between improving measurement precision and preventing information loss.
2Measurement precision
If angle estimation techniques are enhanced for position estimation, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces beam ridge information as an intermediary representation that bridges the gap between complex beam shape data and position estimation requirements. Instead of directly processing complex beam shape information or using simple angle data, the beam ridge information serves as a simplified mediator that captures the essential directional characteristics needed for accurate position estimation while reducing computational complexity.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a first wireless node transmits beam ridge information to a position estimation entity. The beam ridge information is associated with at least one reference signal for positioning (RS-P), and includes transmit (Tx) beam ridge information that is based on an Azimuth angle associated with a highest beam gain for a first RS-P as transmitted to a second wireless node over a set of Tx beams at each of a plurality of boresight elevation angles, or receive (Rx) beam ridge information that is based on a boresight elevation angle associated with a highest beam gain for a second RS-P as received from the second wireless node over a set of Rx beams at each of a plurality of Azimuth angles. The position estimation entity determines a position estimate of a user equipment (UE) based on the beam ridge information.