Multi-Cell PDCCH Blind Detection Budgeting for Dormant SCells
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Solution Overview
Problem
In the 5G NR system, the blind detection budget for scheduled cells is not optimally managed, leading to inefficiencies in PDCCH capacity and scheduling due to dormant or deactivated secondary cells, which affects the utilization of blind detection quantities.
Innovation Solution
A method and apparatus that determine a target blind detection budget and mapping manner based on the scheduling configuration of primary and secondary cells, optimizing the allocation of blind detection resources and mapping control elements to physical control resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If blind detection budgeting is performed without considering dormant PCell/SCell configuration, then the blind detection quantity is maintained, but a portion of the blind detection quantity cannot be used, affecting PDCCH capacity and scheduling efficiency
Solution Approach 1:
The patent applies dynamics by making the blind detection budget adjustable rather than fixed. The network side device dynamically determines the blind detection budget based on the actual scheduling configuration, taking into account whether cells are dormant or active. This allows the system to adapt the detection budget to match actual usage requirements, preventing waste of detection quantities on dormant cells while maintaining adequate capacity for active cells.
Solution Approach 2:
The patent changes the parameter of blind detection budget from a static value to a dynamic value that varies based on cell state. By modifying this parameter according to whether cells are in dormant or active state, the system optimizes the balance between maintaining sufficient detection capacity and avoiding unnecessary detection operations on inactive cells.
2Adaptability or versatility
If multiple cells are scheduled with independent blind detection budgets, then scheduling flexibility is improved, but resource allocation efficiency deteriorates due to redundant detection operations on dormant cells
Solution Approach 1:
The patent merges the blind detection budget management across multiple cells by introducing a unified determination mechanism. Instead of each cell having completely independent budget management, the network side device consolidates the decision-making process to determine the overall blind detection budget based on the combined state of all scheduled cells, thereby eliminating redundant detection operations while preserving scheduling flexibility.
Solution Approach 2:
The patent implements feedback by having the network side device determine the blind detection budget based on feedback information about cell states (dormant or active). This feedback mechanism allows the system to adjust the detection budget according to actual cell usage patterns, improving scheduling efficiency while maintaining the ability to schedule multiple cells flexibly.
Data Source
AI summary
This application discloses an information transmission method, which includes: determining, according to a scheduling configuration of a first cell and/or a second cell of a terminal, a target blind detection budget and/or a target mapping manner of the terminal, where the second cell supports scheduling by the first cell, or the second cell supports self-scheduling and the second cell supports scheduling by the first cell; and performing information transmission according to the target blind detection budget and/or the target mapping manner, where the target blind detection budget includes at least one of: a blind detection budget in the first cell; a blind detection budget in the second cell; or a joint blind detection budget in the first cell and the second cell; and the target mapping manner is a mapping manner in which control elements of the first cell and/or the second cell are mapped to physical control resources.