PDCCH Overbooking Slot Segmentation for Energy Saving
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Solution Overview
Problem
In the context of new radio (NR) protocols, user equipment faces challenges in efficiently managing downlink control information, particularly in high-frequency bands where PDCCH overbooking occurs, leading to increased energy consumption and reduced processing efficiency due to the need for blind monitoring across multiple slots.
Innovation Solution
The method involves determining the slot corresponding to PDCCH overbooking within a span and performing blind monitoring on the preceding slot while prohibiting it on the subsequent slot, allowing the user equipment to enter an energy-saving mode by prioritizing forward slots and discarding blind monitoring on backward slots, thus optimizing energy usage and processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blind monitoring is performed on all slots in a span during PDCCH overbooking, then control information reception reliability is improved, but energy consumption increases and processing efficiency decreases
Solution Approach 1:
The patent segments the span into different slot types: the first slot is marked as a monitoring slot for blind monitoring, while subsequent slots are marked as non-monitoring slots. This segmentation allows the UE to perform blind monitoring only on specific slots rather than all slots in the span, thereby reducing energy consumption while maintaining control information reception reliability through selective monitoring of critical slots.
2Reliability
If blind monitoring is performed on all slots in a span during PDCCH overbooking, then control information reception reliability is improved, but processing efficiency decreases
Solution Approach 1:
The patent segments the span into different slot types: the first slot is marked as a monitoring slot for blind monitoring, while subsequent slots are marked as non-monitoring slots. This segmentation allows the UE to perform blind monitoring only on specific slots rather than all slots in the span, thereby reducing processing overhead and improving processing efficiency while maintaining control information reception reliability through selective monitoring of critical slots.
3Reliability
If blind monitoring is performed on all slots in a span during PDCCH overbooking, then control information reception reliability is improved, but energy consumption increases
Solution Approach 1:
The patent segments the span into different slot types: the first slot is marked as a monitoring slot for blind monitoring, while subsequent slots are marked as non-monitoring slots. This segmentation allows the UE to perform blind monitoring only on specific slots rather than all slots in the span, thereby reducing energy waste while maintaining control information reception reliability through selective monitoring of critical slots.
Solution Approach 2:
The patent applies the discarding principle by deliberately excluding certain slots (subsequent slots in the span) from blind monitoring during PDCCH overbooking conditions. The UE discards the opportunity to monitor these slots, accepting that some control information may be missed in favor of significant energy savings, while the critical first slot monitoring ensures essential control information is still received.
Data Source
AI summary
A method for receiving downlink control information, includes: determining a slot corresponding to physical downlink control channel (PDCCH) overbooking in a span, where the span includes more than one slot; performing blind monitoring on a slot previous to the slot corresponding to the PDCCH overbooking in the span, performing blind monitoring on the slot corresponding to the PDCCH overbooking in the span, and prohibiting performing blind monitoring on a slot behind to the slot corresponding to the PDCCH overbooking in the span.