NR UE Processing Time Switching for Low-Power Blind Decoding

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Solution Overview

Problem

Existing wireless communication systems face challenges in processing times and blind decoding capabilities for NR user devices, particularly low-complexity UEs, leading to inefficiencies and increased latency due to fixed processing times and high power consumption.

Innovation Solution

Implement dynamic switching of processing times and blind decoding capabilities based on criteria such as RRC signaling, DCI, or MAC CE, allowing UEs to switch between different processing times and blind decoding efforts, and adjust based on factors like HARQ feedback and transmission loads.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If fixed processing time is used for NR UEs, then processing simplicity is maintained, but latency increases and scheduling flexibility is reduced

Engineering Contradiction:

ImprovelatencyVSAvoidprocessing time management complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The patent implements dynamic processing time switching by allowing UEs to switch between first and second processing times based on received signaling (DCI, MAC CE, or RRC). This dynamic adjustment enables the system to adapt processing time to current transmission conditions, reducing latency when faster processing is available while maintaining simplicity when using default longer processing times.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the processing time parameter from a fixed value to a dynamically selectable value. The UE is configured with multiple processing time values and can switch between them based on network signaling, allowing the processing time parameter to be adjusted according to channel conditions, traffic type, and UE capability without increasing permanent device complexity.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If high blind decoding capability is maintained for all UEs, then control channel detection reliability is improved, but power consumption increases

Engineering Contradiction:

Improvecontrol channel detection reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent enables dynamic adjustment of blind decoding capability based on received signaling. The UE can switch between different blind decoding capabilities (first capability with higher reliability but higher power consumption, and second capability with lower power consumption) depending on whether fast processing is required. This allows the system to maintain high reliability only when necessary, reducing power consumption during normal operations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the blind decoding capability parameter from a fixed high value to a dynamically adjustable value. The network can signal the UE to use different capability levels, allowing the blind decoding parameter to be optimized for each transmission scenario, balancing reliability requirements with power consumption constraints.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If dynamic processing time switching is implemented, then scheduling flexibility is improved, but device complexity increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidprocessing time switching complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent uses network signaling (DCI, MAC CE, or RRC messages) as an intermediary to control processing time switching. Rather than requiring complex autonomous decision-making at the UE, the network acts as a mediator that provides clear switching commands, simplifying the UE implementation while maintaining high scheduling flexibility at the network side.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Use of energy by moving object

If dynamic blind decoding capability switching is implemented, then power consumption is reduced, but device complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidcapability switching complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent uses network signaling as an intermediary to control blind decoding capability switching. The network provides clear commands indicating which capability level the UE should use, eliminating the need for complex autonomous decision-making at the UE while achieving significant power savings by allowing capability reduction during appropriate periods.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12549963B2Dynamic processing time and dynamic blind decoding capability for NR user devices

Publication Date: 2026.02.10 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV

AI summary

A user device, UE, for a wireless communication system, is to process a transmission received at the UE (PDSCH or PSSCH) or to be prepared by the UE (PUSCH) within a first processing time. Responsive to one or more criteria, the UE is to switch from the first processing time to a second processing time to be used to process a transmission received at the UE or to be transmitted from the UE.