PDCCH Search Space Reporting for Multi-Slot Monitoring Shifts
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently determining slot indices and monitoring occasions for multi-slot PDCCH in high subcarrier spacing scenarios, particularly with 480 kHz and 960 kHz, which impact PDCCH monitoring periodicity and processing time for user equipment (UE).
Innovation Solution
The UE monitors PDCCHs in a Type0-PDCCH common search space over one or two consecutive slots with 480 kHz or 960 kHz subcarrier spacing, and reports capabilities for multi-slot PDCCH monitoring, while shifting monitoring occasions based on updated search space sets, with configuration and reporting mechanisms involving slot indices and UE capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-slot PDCCH monitoring is implemented with 480 kHz or 960 kHz subcarrier spacing, then system information scheduling efficiency is improved, but processing time and complexity for user equipment increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring search space sets and monitoring occasion patterns before actual PDCCH monitoring begins. The UE receives and stores configuration information for multiple search space sets with predefined monitoring occasions across multiple slots, allowing it to efficiently monitor PDCCH without real-time decision-making delays. This pre-planning of monitoring patterns reduces processing time during actual operation while maintaining high scheduling efficiency.
2Adaptability or versatility
If monitoring occasions are shifted based on updated search space sets, then adaptability to network changes is improved, but device complexity and computational load increase
Solution Approach 1:
The patent implements dynamics by enabling the UE to dynamically adjust its PDCCH monitoring behavior based on received configuration updates. When the network updates search space set configurations, the UE adapts by shifting monitoring occasions according to the new parameters while maintaining efficient processing through standardized shift calculations. This dynamic adaptation allows the system to respond to network changes without requiring complex custom processing for each scenario.
Solution Approach 2:
The patent applies parameter changes by modifying monitoring occasion parameters (such as slot offsets, frequency positions, and timing patterns) based on updated search space set configurations. The UE receives configuration parameters that define monitoring behavior and adjusts its monitoring pattern by changing these parameters according to network instructions. This parameter-based approach enables flexible adaptation to network changes while keeping device complexity manageable through standardized parameter interpretation and application.
3Reliability
If capability reporting for multi-slot PDCCH monitoring is implemented, then network-UE coordination is improved, but signaling overhead and communication complexity increase
Solution Approach 1:
The patent extracts capability reporting into a separate, dedicated signaling mechanism independent of regular data transmission. The UE reports its multi-slot PDCCH monitoring capabilities through specific uplink signaling messages that are separately handled from data plane communications. This extraction allows the network to obtain necessary capability information for coordination while minimizing interference with normal data traffic and reducing overall signaling overhead through specialized efficient reporting formats.
Data Source
AI summary
The application provides technologies associated with search space configuration capability reporting in wireless communication.