Beam Measurement Reporting During Base Station Power Saving

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Solution Overview

Problem

When a base station enters an energy saving state, the reduction in transmission power can lead to insufficient reference signal measurements, resulting in inaccurate cell/beam measurements and increased signaling overhead, which can cause handover failures and radio link failures.

Innovation Solution

Implement adjustments to cell/beam measurements by using a power offset, a second threshold lower than the first threshold, and other configuration parameters to ensure accurate reporting even with reduced base station transmission power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by stationary object

If the base station reduces transmission power to enter energy saving state, then energy consumption is reduced, but measurement precision deteriorates

Engineering Contradiction:

Improvebase station energy consumptionVSAvoidcell/beam measurement accuracy

Core Design Contradiction:

Use of energy by stationary objectVSMeasurement precision

Solution Approach 1:

The patent applies parameter changes by introducing a power offset parameter that compensates for the reduced transmission power. The wireless device measures reference signals with the lower power level and then applies the power offset parameter to normalize the measurements, thereby maintaining measurement precision while the base station operates in energy saving state with reduced transmission power.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by stationary object

If the base station reduces transmission power, then energy saving is achieved, but reliability deteriorates

Engineering Contradiction:

Improvebase station energy consumptionVSAvoidhandover and radio link failure resistance

Core Design Contradiction:

Use of energy by stationary objectVSReliability

Solution Approach 1:

The patent implements feedback mechanisms where the wireless device reports measurement results that include information about the power offset and measurement conditions. The base station uses this feedback to determine whether to proceed with handover or maintain the current connection, thereby ensuring reliable operation even when transmission power is reduced during energy saving states.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent applies preliminary action by having the wireless device perform measurements and evaluations before actual handover occurs. The device determines whether measurement results satisfy threshold criteria and reports this information to the base station in advance, allowing the base station to make informed decisions about handover timing and avoid premature or unsuccessful handovers during energy saving states.

Inventive Principle:

Principle #10Preliminary action

3Use of energy by stationary object

If the base station enters energy saving state, then power consumption is reduced, but device complexity increases

Engineering Contradiction:

Improvebase station power consumptionVSAvoidmeasurement configuration complexity

Core Design Contradiction:

Use of energy by stationary objectVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a unified measurement and reporting mechanism that works across different operational states of the base station. The same measurement procedure is used whether the base station is in normal or energy saving state, with the only difference being the application of the power offset parameter. This multi-functional approach avoids the need for separate measurement systems and reduces overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4239913B1Measurement reporting for energy saving state

Publication Date: 2025.12.31 COMCAST CABLE COMM LLC

Figure 1A~1B
Figure 2A~2B
Figure 3

AI summary

A wireless device may communicate with a base station for reporting measurements of reference signals associated with one or more beams. The wireless device may use one or more adjusted configuration parameters, for example, if the base station reduces its transmission power. The wireless device may report one or more cell and/or beam measurements based on the one or more adjusted configuration parameters, which may provide improved accuracy of measurement reporting.