Blind Decoding Limit Adjustment for Low-Power UE Control Monitoring

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Solution Overview

Problem

Blind decoding in wireless communications consumes significant processing resources and power, particularly in low-cost devices with reduced capabilities, leading to inefficiencies and increased latency.

Innovation Solution

Adjustments to blind decoding limits based on trigger conditions, such as bandwidth part changes, beam changes, and control resource set monitoring, are implemented to optimize processing power and time usage in user equipment (UEs).

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If UEs monitor multiple blind decoding candidates in downlink control channel, then control information reception reliability is improved, but processing power consumption and latency increase

Engineering Contradiction:

Improvecontrol information reception reliabilityVSAvoidprocessing power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adjustment of blind decoding candidate limits based on trigger conditions. The base station configures different blind decoding limit values that are activated when specific conditions are met, allowing the system to adapt between monitoring more candidates (for reliability) and fewer candidates (for power saving) based on current operational context

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of blind decoding candidate limit from a fixed value to a configurable value with multiple possible settings. The base station can configure different limit values and trigger conditions, allowing the UE to adjust its monitoring behavior by changing this key parameter based on network conditions and UE capabilities

Inventive Principle:

Principle #35Parameter changes

2Reliability

If UEs monitor multiple blind decoding candidates in downlink control channel, then control information reception reliability is improved, but processing time increases

Engineering Contradiction:

Improvecontrol information reception reliabilityVSAvoidprocessing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The base station pre-configures multiple blind decoding limit values and their associated trigger conditions before UE operation. This preliminary configuration allows the UE to quickly switch between different monitoring strategies without real-time negotiation, reducing processing time when conditions change

Inventive Principle:

Principle #10Preliminary action

3Use of energy by moving object

If blind decoding limit adjustments are implemented, then power consumption is reduced, but device complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoiddevice complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where the UE reports its capability to support blind decoding limit adjustments to the base station. The base station then configures appropriate trigger conditions and limit values based on this feedback, creating a closed-loop system that manages complexity through intelligent configuration rather than hardcoding complex logic in the UE

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The UE autonomously monitors trigger conditions and adjusts its blind decoding candidate monitoring based on configured rules without requiring continuous network intervention. This self-service approach reduces the need for complex network-UE coordination mechanisms while enabling power-saving behavior

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12587309B2Blind decoding limit techniques for wireless communications

Publication Date: 2026.03.24 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described that support blind decoding limit adjustment techniques. A base station may configure a user equipment (UE) with one or more conditions that may trigger an adjustment to a number of blind decoding candidates that are to be monitored at the UE for a control information communication from the base station. A nominal number of blind decoding candidates may be configured at the UE, and the adjustment to the number of blind decoding candidates may reduce the number of blind decoding candidates from the nominal number, thus allowing the UE to perform blind decoding using less processing power, less time, or both. The trigger conditions may include one or more configured conditions that may support reliable communications with fewer blind decoding candidates.