PDCCH Multi-Slot Blind Detection Limits for Flexible Scheduling
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Solution Overview
Problem
Existing wireless communication systems face limitations in PDCCH blind detection due to rigid single-slot limits, which reduce scheduling flexibility and increase blockage probability, particularly at higher frequencies with larger subcarrier spacing.
Innovation Solution
Implementing a set of blind detection limits that include both a single-slot and multi-slot limit for PDCCH blind detection across consecutive slots, allowing for more flexible PDCCH monitoring and distribution of processing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-slot blind detection limit is applied, then the device complexity is reduced and operation is simplified, but the scheduling flexibility is reduced and blockage probability increases
Solution Approach 1:
The blind detection limit is segmented into multiple components: a first limit applied within each slot and a second limit applied across multiple slots. This segmentation allows the system to maintain simple per-slot operation while enabling flexible multi-slot scheduling, resolving the contradiction between operational simplicity and scheduling adaptability.
Solution Approach 2:
The system dynamically adjusts blind detection limits based on scheduling requirements. The network can configure different first and second limits adaptively, allowing the blind detection mechanism to be flexible in response to varying scheduling demands while maintaining clear operational rules at each slot boundary.
2Device complexity
If a single-slot blind detection limit is applied, then the processing per slot is simplified, but the blockage probability increases
Solution Approach 1:
By segmenting the blind detection limit into per-slot and multi-slot components, the system maintains simple processing within each slot while distributing detection opportunities across multiple slots. This reduces the burden on single-slot processing complexity while improving reliability through increased detection opportunities over time.
Solution Approach 2:
The network configures the first and second blind detection limits in advance based on expected scheduling patterns. This preliminary configuration allows the UE to efficiently manage blind detection operations without real-time complex calculations, reducing processing complexity while ensuring adequate detection coverage for reliability.
3Adaptability or versatility
If multi-slot blind detection is enabled, then scheduling flexibility is improved and blockage probability is reduced, but the processing complexity increases
Solution Approach 1:
The multi-slot blind detection mechanism is segmented into manageable components: a first limit for individual slots and a second limit for the multi-slot period. This segmentation allows flexible multi-slot scheduling to be implemented without requiring complex real-time processing, as the limits are configured in advance and applied systematically.
Solution Approach 2:
The system uses parameter configuration to manage complexity. By defining first and second blind detection limits as configurable parameters, the network can adapt the multi-slot detection behavior to match scheduling requirements without changing the fundamental processing architecture. This allows flexibility in scheduling while controlling processing complexity through parameter management rather than structural complexity.
Data Source
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AI summary
To facilitate more flexible blind detection, a UE may be configured receive PDCCH in a set of consecutive slots, the set of consecutive slots comprising at least two slots. The UE may be further configured to perform blind detection on each PDCCH received in the set of consecutive slots based on a first PDCCH blind detection limit and a second PDCCH blind detection limit, the first PDCCH blind detection limit being a single-slot limit, the second PDCCH blind detection limit being a multi-slot limit.