PDCCH Blind Decoding Capability Reporting in 5G Terminals
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Solution Overview
Problem
In the 5G mobile communication system, the complexity of physical downlink control channel (PDCCH) blind decoding is increased due to varied service types and terminal processing capabilities, leading to inconsistent blind decoding capabilities among terminals, which cannot meet the diverse requirements of services and terminal types if all terminals are forced to have the same capability.
Innovation Solution
A method where terminals determine and report their PDCCH blind decoding capability information, dependent on subcarrier spacing and OFDM symbol length, to network devices, allowing the network devices to configure appropriate blind decoding instructions based on the reported capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If all terminals are forced to have the same blind decoding capability through protocols, then system uniformity is improved, but terminal processing burden increases and diversity requirements cannot be met
Solution Approach 1:
The patent introduces dynamic capability indication mechanisms where terminals can report their actual blind decoding capabilities to the network. The network then adapts configuration parameters such as search space sets, candidate numbers, and monitoring occasions based on reported terminal capabilities. This dynamic adaptation allows the system to maintain uniformity in protocol while adjusting operational parameters to match diverse terminal processing abilities, resolving the contradiction between system uniformity and terminal processing burden.
2Adaptability or versatility
If protocol parameters for blind decoding are increased to meet diverse service requirements, then service adaptability is improved, but terminal processing complexity increases
Solution Approach 1:
The patent enables different terminals to have different blind decoding configuration parameters based on their individual capabilities and service requirements. The network configures search space sets, candidate numbers, and monitoring occasions locally for each terminal according to its reported capability level. This local quality approach allows high-capability terminals to handle complex services with more decoding opportunities while low-capability terminals maintain simpler configurations, achieving service adaptability without universally increasing terminal processing complexity.
3Adaptability or versatility
If multiple CORESETs and service types are supported simultaneously, then system functionality is improved, but PDCCH blind decoding complexity increases
Solution Approach 1:
The patent segments the blind decoding process into capability assessment and configuration adaptation phases. Terminals first report their capability levels, then the network segments the configuration into different search space sets with different candidate numbers and monitoring patterns. This segmentation allows multiple CORESETs and service types to be supported by dividing the decoding task into manageable portions tailored to terminal capabilities, maintaining system functionality while controlling PDCCH blind decoding complexity through structured organization and capability-based differentiation.
Data Source
AI summary
The present disclosure discloses an information reporting method and information determining method, a terminal and a network device. The method includes: determining PDCCH blind decoding capability information of the terminal; wherein the PDCCH blind decoding capability information indicates a maximum processing capability of the terminal to perform blind decoding on the PDCCH within a first unit time and a maximum processing capability of the terminal to perform blind decoding on the PDCCH within a second unit time; the first unit time is greater than the second unit time; reporting the PDCCH blind decoding capability information to a network device. The present disclosure is applied to PDCCH blind decoding.