PDCCH Blind Detection Limiting via Slot Grouped Scheduling Cells
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increased complexity of PDCCH monitoring for User Equipment (UE) in new radio (NR) systems operating in high frequency bands due to reduced symbol and slot granularities leads to higher implementation complexity and power consumption.
Innovation Solution
A method for PDCCH blind detection limiting is implemented by grouping scheduling cells and determining PDCCH blind detection limitation information for each group, reducing complexity through slot group-based PDCCH blind detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If PDCCH monitoring is implemented based on per slot or per span granularity in high-frequency NR systems, then the system can support high subcarrier spacing, but the terminal implementation complexity increases greatly
Solution Approach 1:
The patent applies segmentation by dividing the monitoring complexity into two levels: slot-level grouping (coarse granularity) and span-level monitoring (fine granularity). Terminals group multiple slots into monitoring units and perform PDCCH blind detection at the span level within these groups, reducing the overall number of monitoring operations required while maintaining support for high subcarrier spacing
Solution Approach 2:
The patent introduces a new dimensional approach by implementing slot group-based monitoring that operates above the traditional slot level. This creates a hierarchical structure where monitoring is performed on grouped slots rather than individual slots, effectively adding a temporal aggregation dimension that reduces the frequency of monitoring operations in high-frequency systems
2Speed
If per slot or per span PDCCH monitoring is used in high-frequency bands, then high subcarrier spacing is supported, but power consumption increases
Solution Approach 1:
By segmenting monitoring into slot groups rather than continuous per-slot monitoring, the patent reduces the total number of PDCCH blind detection operations. Terminals only perform monitoring at span boundaries within grouped slots, significantly reducing power consumption while maintaining support for high subcarrier spacing required in frequency ranges above 52.6 GHz
Solution Approach 2:
The patent implements periodic monitoring at span-level intervals within slot groups rather than continuous monitoring. This periodic action pattern allows terminals to enter low-power states between monitoring intervals while still detecting PDCCH transmissions in high-frequency systems that require larger subcarrier spacing
3Device complexity
If slot group-based PDCCH blind detection limitation is implemented, then terminal complexity is reduced, but monitoring precision may be affected
Solution Approach 1:
The patent maintains detection precision by segmenting monitoring into span-level operations within slot groups. While slots are grouped for organizational purposes, the actual PDCCH blind detection still occurs at the finer span level, ensuring that detection precision is not compromised while terminal complexity is reduced through the grouping mechanism
Solution Approach 2:
The patent applies local quality by maintaining fine-grained span-level monitoring precision within each slot group while using coarse-grained slot grouping for overall structure. This allows the system to have different levels of detail appropriate to each functional requirement: grouping for complexity management, span-level monitoring for detection precision
Data Source
AI summary
This application relates to the field of communication technologies. Disclosed are a PDCCH blind detection limiting method, a terminal, and a network side device. The method includes: grouping a plurality of scheduling cells, where the plurality of scheduling cells include at least one first cell that supports slot group-based physical downlink control channel PDCCH blind detection limitation; and determining, based on a grouping result, PDCCH blind detection limitation information corresponding to each group.