Wireless Device Reference Signal Reception with Adaptive Bandwidth

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Solution Overview

Problem

Existing methods for wireless devices to receive reference signals result in resource wastage and inefficient power consumption, particularly when transitioning between active and inactive states.

Innovation Solution

A wireless device determines the pattern and configuration of reference signal reception based on power consumption criteria and target accuracy levels to optimize energy savings, selecting bandwidth and receiver settings for efficient signal processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If wireless device continuously monitors reference signals with wide bandwidth to ensure accurate signal reception, then measurement precision is improved, but power consumption increases

Engineering Contradiction:

Improvesignal reception accuracyVSAvoidpower consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies dynamics by making the receiver bandwidth configurable and adaptable. The wireless device can dynamically adjust the bandwidth of the receiver based on whether it is in active or inactive state, allowing optimal balance between measurement precision and power consumption at different operational phases

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of receiver bandwidth based on operational state. By configuring the receiver to use reduced bandwidth during inactive states and full bandwidth during active states, the system achieves both power savings and maintains signal reception accuracy when needed

Inventive Principle:

Principle #35Parameter changes

2Reliability

If wireless device operates receiver with wide bandwidth to capture all reference signals, then signal reception completeness is improved, but resource utilization deteriorates

Engineering Contradiction:

Improvesignal reception completenessVSAvoidresource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system dynamically adjusts receiver configuration based on operational state. During inactive states, the receiver operates with reduced bandwidth to improve resource utilization, while during active states it switches to full bandwidth to ensure complete signal reception

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies partial action by using reduced bandwidth during inactive states when full signal reception is not critical, and full bandwidth during active states when complete reception is necessary for maintaining connectivity

Inventive Principle:

Principle #16Partial or excessive action

3Measurement precision

If wireless device increases monitoring time to improve measurement accuracy, then measurement precision is improved, but loss of time increases

Engineering Contradiction:

Improvereference signal measurement accuracyVSAvoidtime spent in inactive state

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent changes the bandwidth parameter based on operational state to achieve a different form of measurement efficiency. Instead of increasing time, the system uses full bandwidth during brief active states to achieve accurate measurements quickly, then returns to reduced bandwidth mode

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12452011B2Wireless device, and methods performed thereby, for handling reception of one or more reference signals

Publication Date: 2025.10.21 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method performed by a wireless device operating in a wireless communications network. The wireless device determines information to apply in the wireless device. The information is to receive one or more reference signals (RSs) while the wireless device is in inactive or idle state. The RSs are to be used to perform one or more tasks. The determining is based on one or more criteria. The criteria include a criterion of power consumption, and a target level of accuracy to be achieved in a performance of the tasks. The information includes: a pattern of reception of the RSs, and a configuration of a receiver. The information includes a bandwidth of reception of the RSs. The wireless device receives the RSs based on the determined information. The receiving of the RSs is performed while the wireless device is in inactive or idle state.