Positioning SRS Time Window Configuration for Collision-Aware Uplink

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Solution Overview

Problem

Existing wireless communication systems face challenges in accurately and efficiently transmitting and receiving signals, particularly in scenarios requiring precise timing and frequency hopping configurations for positioning and sensing tasks.

Innovation Solution

A method for configuring uplink time windows for sounding reference signals (SRS) based on specific parameters such as uplink time window information, frequency hopping, and transmission duration, allowing for prioritized transmission of SRS over other signals, along with a user equipment (UE) and base station (BS) implementation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If SRS transmission is prioritized over other signals, then positioning accuracy is improved, but signal collision and interference increase

Engineering Contradiction:
Improvepositioning accuracyVSAvoidsignal collision and interference
Core Design Contradiction:
Measurement precisionVSObject-generated harmful factors

Solution Approach 1:

The network configures uplink time window information in advance, specifying time resources where SRS transmissions are prioritized. This preliminary configuration prevents signal collisions by reserving dedicated time slots for positioning SRS before conflicts can occur with other uplink signals.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The uplink time window is segmented into specific time resources (symbols or slots) where SRS transmission has priority. This segmentation separates positioning SRS transmissions from other uplink signals in time, reducing interference while maintaining positioning accuracy.

Inventive Principle:
Principle #1Segmentation

2Productivity

If uplink time window is configured for SRS transmission, then transmission efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvetransmission efficiencyVSAvoidconfiguration complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The uplink time window configuration serves multiple functions: it identifies SRS transmission opportunities, establishes priority rules, and defines time resource allocation. This multi-functionality reduces the need for separate configuration mechanisms, offsetting the complexity through consolidated management.

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

Solution Approach 2:

The network dynamically adjusts uplink time window parameters (time resource offsets, duration) based on positioning requirements and traffic conditions. This parameter-based flexibility allows efficient adaptation without fundamental system changes, managing complexity through configurable parameters rather than structural modifications.

Inventive Principle:
Principle #35Parameter changes

3Measurement precision

If frequency hopping is applied to SRS resource, then positioning accuracy is improved, but transmission duration increases

Engineering Contradiction:
Improvepositioning accuracyVSAvoidtransmission duration
Core Design Contradiction:
Measurement precisionVSDuration of action of moving object

Solution Approach 1:

The uplink time window is configured in advance to encompass the entire frequency-hopping SRS transmission sequence. This preliminary time allocation ensures that all hopping instances fit within a predetermined window, managing the extended duration through upfront planning rather than ad-hoc adjustments.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Frequency hopping follows a periodic pattern across multiple SRS transmissions within the uplink time window. This periodic structure allows the network to predict and accommodate the extended transmission duration, organizing multiple short hopping cycles within a unified time framework rather than creating unmanaged continuous transmission.

Inventive Principle:
Principle #19Periodic action

Data Source

PatentEP4693999A1Method and device for wireless signal transmission and reception in wireless communication system
Publication Date: 2026.02.11 LG ELECTRONICS INC
  • EP4693999A1 patent drawingFigure 1
  • EP4693999A1 patent drawingFigure 2
  • EP4693999A1 patent drawingFigure 3

AI summary

Disclosed are a method and apparatus for transmitting a sounding reference signal (SRS) for positioning by a user equipment (UE) in a wireless communication system. The method includes receiving SRS configuration information for configuring at least one SRS resource, and transmitting the SRS in a first SRS resource from among the at least one SRS resource based on the SRS configuration information.