Terminal Blind Decoding Capability Reporting for 5G Control Channel

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Solution Overview

Problem

In 5G and LTE communication systems, the complexity and power consumption of blind decoding for downlink control channels are increased due to various service types and terminal types, making existing protocols inadequate for adapting to diverse needs.

Innovation Solution

A method where a terminal determines and reports its blind decoding capability to a base station, allowing for a reasonable blind decoding configuration that aligns with its capabilities, thereby reducing unnecessary decodings and optimizing resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal performs blind decoding for all possible DCI formats and aggregation levels, then the reliability of control information reception is improved, but the computational complexity and power consumption increase

Engineering Contradiction:

Improvecontrol information reception reliabilityVSAvoidblind decoding complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the blind decoding configuration parameters (such as the number of DCI formats to decode, aggregation levels, and search space sizes) based on the terminal's reported capability and current service requirements. This allows the system to optimize between reliability and complexity by adapting parameters rather than using fixed maximum values.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by introducing a capability reporting mechanism where the terminal dynamically informs the base station of its blind decoding capability, and the base station dynamically configures appropriate decoding parameters. This dynamic adaptation allows the system to adjust the balance between reliability and complexity in real-time based on actual conditions.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the terminal supports multiple DCI format types simultaneously, then the versatility of the terminal is improved, but the number of blind decoding operations increases

Engineering Contradiction:

ImproveDCI format support versatilityVSAvoidblind decoding throughput

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent uses parameter changes by configuring the terminal to support a specific number of DCI format types based on its capability and service needs. The base station can adjust this parameter dynamically, allowing the terminal to support multiple formats when needed while reducing to fewer formats when productivity is prioritized, thus resolving the contradiction between versatility and throughput.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the terminal performs blind decoding at multiple aggregation levels, then the reliability of control channel reception is improved, but the power consumption increases

Engineering Contradiction:

Improvecontrol channel reception reliabilityVSAvoidterminal power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies parameter changes by dynamically adjusting the aggregation levels at which the terminal performs blind decoding. The base station configures specific aggregation levels based on the terminal's capability and channel conditions, allowing the terminal to decode at multiple levels for reliability when needed, or reduce to fewer levels to conserve power when appropriate.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics through the capability reporting and configuration mechanism, where the terminal dynamically informs the base station of its aggregation level handling capability, and the base station dynamically adjusts the configured aggregation levels based on current service requirements and power consumption considerations.

Inventive Principle:

Principle #15Dynamics

4Device complexity

If the base station uses fixed blind decoding configuration for all terminals, then the system complexity is reduced, but the adaptability to different terminal capabilities decreases

Engineering Contradiction:

Improveconfiguration management complexityVSAvoidterminal capability adaptability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent resolves this contradiction by introducing capability-based parameter adjustment. The terminal reports its blind decoding capability parameters to the base station, which then uses these parameters to configure appropriate decoding settings. This allows the system to maintain relatively simple configuration management while achieving high adaptability through parameter customization based on terminal capabilities.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3944532B1Method for reporting blind decoding capability, blind decoding configuration, blind decoding method, terminal and base station

Publication Date: 2024.05.08 VIVO MOBILE COMM CO LTD

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AI summary

The present disclosure provides a method for reporting a blind decoding capability, blind decoding configuration, a blind decoding method, a terminal and a base station. The method for reporting a blind decoding capability includes: determining the blind decoding capability information of the terminal, where the blind decoding capability information of the terminal include a maximum number of blind decodings that the terminal is capable to process per time unit; reporting the blind decoding capability information of the terminal to a base station.