Beam Profile Parameterization for Low-Overhead UE Positioning

Solution Overview

Problem

Conventional methods for providing UE with beam power information for positioning signals from transmission/reception points (TRPs) require significant bandwidth, leading to processing resource and power consumption burdens for battery-powered UEs.

Innovation Solution

UEs receive information about antenna element radiation patterns and precoding matrix indices instead of full beam descriptions, leveraging existing knowledge to reduce bandwidth requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If full beam descriptions are provided to UEs for positioning signals, then positioning accuracy is improved, but bandwidth consumption and power usage increase significantly

Engineering Contradiction:

Improvepositioning accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent extracts only the essential parameters needed for positioning (antenna element radiation patterns and precoding matrix indices) from the complete beam description, transmitting only these critical elements to the UE while omitting redundant information. This extraction approach maintains positioning accuracy by preserving the key parameters needed for beam power calculation while significantly reducing the data volume that must be transmitted and processed, thereby lowering power consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the beam profile information into distinct components: antenna element radiation patterns and precoding matrix indices. By dividing the complete beam description into these separate, manageable segments, the system can transmit only the necessary portions to the UE for positioning purposes, rather than sending the entire beam characterization data set, thus reducing bandwidth and power requirements.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If full beam descriptions are provided to UEs for positioning signals, then positioning accuracy is improved, but processing resources are overwhelmed

Engineering Contradiction:

Improvepositioning accuracyVSAvoidprocessing resources

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts only the essential parameters needed for positioning (antenna element radiation patterns and precoding matrix indices) from the complete beam description, transmitting only these critical elements to the UE while omitting redundant information. This extraction approach maintains positioning accuracy by preserving the key parameters needed for beam power calculation while significantly reducing the data volume that must be transmitted and processed, thereby lowering power consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the beam profile information into distinct components: antenna element radiation patterns and precoding matrix indices. By dividing the complete beam description into these separate, manageable segments, the system can transmit only the necessary portions to the UE for positioning purposes, rather than sending the entire beam characterization data set, thus reducing bandwidth and power requirements.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If beam profile information is transmitted for multiple TRPs, then positioning coverage is improved, but bandwidth requirements are multiplied

Engineering Contradiction:

Improvepositioning coverageVSAvoidbandwidth

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential parameters needed for positioning (antenna element radiation patterns and precoding matrix indices) from the complete beam description, transmitting only these critical elements to the UE while omitting redundant information. This extraction approach maintains positioning accuracy by preserving the key parameters needed for beam power calculation while significantly reducing the data volume that must be transmitted and processed, thereby lowering power consumption.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies universal parameter sets (antenna element radiation patterns and precoding matrix indices) that can be used across multiple TRPs. By using a standardized, multi-functional parameter format that works for all transmission/reception points, the system avoids transmitting redundant TRP-specific information and achieves efficient scaling to support multiple TRPs with reduced bandwidth requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12574083B2Reduced overhead beam profile parametrization

Publication Date: 2026.03.10 QUALCOMM INC

AI summary

Disclosed are techniques for wireless communication. In an aspect, a receiving entity receives information that characterizes a set of positioning signals to be transmitted by a transmission/reception point (TRP) using a set of transmission beams, the information comprising at least one antenna element radiation pattern, at least one antenna element array configuration, and, for each beam in the set of transmission beams, information identifying at least one precoding matrix. The receiving entity performs measurements of the positioning signals transmitted by the TRP, and calculates at least one positioning measurement estimate based on at least some of the at least one antenna element radiation pattern, the at least one antenna element array configuration, the information identifying at least one precoding matrix, and the positioning measurements. The receiving entity sends positioning information to the TRP. The positioning information may include the at least one positioning measurement estimate.