BWP-Less Window SRS Frequency Hopping for RedCap Positioning

Solution Overview

Problem

Existing mobile communication systems face challenges in performing SRS frequency hopping for RedCap UEs due to the need for lengthy BWP switching times, which can be time-consuming and affect positioning estimation accuracy.

Innovation Solution

Implementing a BWP-less window (BLW) configuration for RedCap UEs to enable SRS frequency hopping without BWP switching, allowing for fast RF switching between hops while maintaining phase alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If BWP switching is performed for SRS frequency hopping, then frequency hopping can be achieved, but positioning latency increases due to lengthy switching times

Engineering Contradiction:

ImproveSRS frequency hopping speedVSAvoidpositioning latency

Core Design Contradiction:

SpeedVSLoss of time

Solution Approach 1:

The patent extracts the BWP switching operation from the SRS frequency hopping process by introducing a BWP-less window (BLW). During the BLW, the UE performs SRS frequency hopping without executing BWP switching, thereby removing the time-consuming BWP switching step while maintaining the frequency hopping functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The network configures the UE with a BWP-less window (BLW) in advance, which is a pre-defined time window during which BWP switching is suspended. This preliminary configuration allows the UE to perform fast SRS frequency hopping without needing to execute BWP switching procedures during the positioning measurement.

Inventive Principle:

Principle #10Preliminary action

2Speed

If BWP switching is performed for SRS frequency hopping, then frequency hopping can be achieved, but positioning estimation accuracy deteriorates

Engineering Contradiction:

ImproveSRS frequency hopping speedVSAvoidpositioning estimation accuracy

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The patent removes the BWP switching operation from the SRS frequency hopping process by introducing a BWP-less window (BLW). During the BLW, the UE performs SRS frequency hopping without executing BWP switching, thereby removing the time-consuming BWP switching step while maintaining the frequency hopping functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The network configures the UE with a BWP-less window (BLW) in advance, which is a pre-defined time window during which BWP switching is suspended. This preliminary configuration allows the UE to perform fast SRS frequency hopping without needing to execute BWP switching procedures during the positioning measurement.

Inventive Principle:

Principle #10Preliminary action

3Speed

If BWP switching is performed for SRS frequency hopping, then frequency hopping can be achieved, but overall system productivity decreases

Engineering Contradiction:

ImproveSRS frequency hopping speedVSAvoidpositioning efficiency

Core Design Contradiction:

SpeedVSProductivity

Solution Approach 1:

The patent extracts the BWP switching operation from the SRS frequency hopping process by introducing a BWP-less window (BLW). During the BLW, the UE performs SRS frequency hopping without executing BWP switching, thereby removing the time-consuming BWP switching step while maintaining the frequency hopping functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The network configures the UE with a BWP-less window (BLW) in advance, which is a pre-defined time window during which BWP switching is suspended. This preliminary configuration allows the UE to perform fast SRS frequency hopping without needing to execute BWP switching procedures during the positioning measurement.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12388584B2Bandwidth part free sounding reference signal for positioning frequency hopping

Publication Date: 2025.08.12 NOKIA TECHNOLOGIES OY

AI summary

The disclosure includes an apparatus, having: means for receiving, from a network entity, configuration information to indicate a window which is bandwidth-part free; and means for transmitting, to the network entity, a sounding reference signal in frequency hopping within the indicated window. The disclosure also includes a method which may include receive, from a network entity, configuration information to indicate a window which is bandwidth-part free. The method may also include transmitting, to the network entity, a sounding reference signal in frequency hopping within the indicated window.