Directional Sensing Requests Using UE Feedback for Refined Object Detection

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently utilizing sensing signals for object detection, particularly in scenarios where refined sensing resolution is needed, as they often lack the ability to dynamically adjust beam directions and bandwidths to optimize sensing performance.

Innovation Solution

A method and apparatus for wireless communication that involves a user equipment (UE) receiving a first sensing signal, determining a preferred sensing direction, and transmitting a directional sensing signal request to a base station, which then transmits a second sensing signal based on this request, allowing for refined object detection by adjusting beam directions and bandwidths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If wider beams are used for sensing signals, then coverage area is improved, but sensing resolution deteriorates

Engineering Contradiction:
Improvecoverage areaVSAvoidsensing resolution
Core Design Contradiction:
Area of stationary objectVSMeasurement precision

Solution Approach 1:

The patent divides the sensing process into multiple stages: initial wide-beam sensing for coverage, followed by directional sensing in specific segments/directions for resolution. The UE reports preferred sensing directions, and the BS transmits subsequent sensing signals in those specific directions, effectively segmenting the sensing space to achieve both coverage and resolution.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic adjustment of beam directions based on UE feedback. The UE determines preferred sensing directions from initial wide-beam signals and communicates these back to the BS, which then dynamically adjusts subsequent sensing signal directions. This dynamic adaptation allows the system to optimize between coverage and resolution based on real-time conditions.

Inventive Principle:
Principle #15Dynamics

2Measurement precision

If narrower beams are used for sensing signals, then sensing resolution is improved, but coverage area deteriorates

Engineering Contradiction:
Improvesensing resolutionVSAvoidcoverage area
Core Design Contradiction:
Measurement precisionVSArea of stationary object

Solution Approach 1:

The patent segments the sensing process into an initial wide-beam phase for coverage and subsequent narrow-beam directional phases for resolution. By separating these functions in time and space, the system achieves both wide coverage initially and high resolution in specific directions subsequently, without requiring continuous narrow beams that would limit coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary wide-beam sensing to identify regions of interest before focusing narrow beams on those specific directions. The UE reports preferred sensing directions based on initial wide-beam reception, allowing the BS to pre-identify target areas before allocating narrow-beam resources, thus avoiding the coverage limitation of continuous narrow-beam operation.

Inventive Principle:
Principle #10Preliminary action

3Area of stationary object

If sensing signals are transmitted in all directions, then sensing coverage is improved, but system resource consumption deteriorates

Engineering Contradiction:
Improvesensing coverageVSAvoidsystem resource consumption
Core Design Contradiction:
Area of stationary objectVSLoss of energy

Solution Approach 1:

The patent segments directional sensing into priority directions identified by UE feedback. Instead of uniformly transmitting sensing signals in all directions, the system divides directions into prioritized categories based on UE reports, allocating sensing resources only to high-priority directions. This segmentation reduces overall resource consumption while maintaining essential coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements partial directional sensing by focusing resources on specific preferred directions rather than exhaustive all-direction sensing. The UE determines and reports preferred sensing directions, and the BS allocates sensing signals primarily to these directions, performing partial sensing that achieves adequate coverage with reduced resource expenditure compared to uniform all-direction scanning.

Inventive Principle:
Principle #16Partial or excessive action

4Measurement precision

If directional sensing signal requests are implemented, then sensing resolution is improved, but device complexity deteriorates

Engineering Contradiction:
Improvesensing resolutionVSAvoidprotocol complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent implements a universal feedback mechanism where UEs report preferred sensing directions using existing uplink communication channels and message formats. The directional sensing signal request integrates with standard random access and scheduling procedures, allowing the same communication infrastructure to serve both traditional communication functions and the new directional sensing coordination function, thereby minimizing additional complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent establishes a feedback loop where UEs report preferred sensing directions to the BS based on initial wide-beam reception. This feedback mechanism enables the BS to make informed decisions about subsequent directional sensing signal allocation. The feedback is implemented using standard uplink messaging, allowing the system to achieve intelligent directional adaptation without requiring complex dedicated signaling protocols.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12368490B2Directional sensing signal request
Publication Date: 2025.07.22 QUALCOMM INC
  • US12368490B2 patent drawing
  • US12368490B2 patent drawing
  • US12368490B2 patent drawing

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first sensing signal transmitted by a base station. The UE may determine a preferred sensing direction for a second sensing signal based at least in part on the first sensing signal. The UE may transmit a directional sensing signal request to the base station. The directional sensing signal request may include information indicating the preferred sensing direction for the second sensing signal. Numerous other aspects are provided.