PDCCH Detection via Carrier Combination Configurations
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Solution Overview
Problem
In the 5G mobile communication system, detecting a physical downlink control channel (PDCCH) is challenging when multiple carriers are scheduled by a single downlink control information (DCI), as existing methods fail to efficiently handle the complexity of distinguishing between single and multiple carrier scheduling scenarios, leading to increased communication protocol complexity.
Innovation Solution
The method involves performing PDCCH detection on a per-carrier combination basis, using a carrier combination that includes one or more carriers, and configuring PDCCH configurations for each carrier combination to align DCI sizes and balance detection capabilities, thereby simplifying the detection process and improving transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing PDCCH detection methods are used for multiple carriers scheduled by a single DCI, then the detection process becomes complex and difficult to distinguish between single and multiple carrier scheduling scenarios, but the patent introduces carrier combination configurations with aligned DCI sizes to simplify detection
Solution Approach 1:
The patent segments the PDCCH detection process by introducing carrier combination configurations. Each carrier combination (e.g., combination 0 for single carrier, combination 1 for multiple carriers) has its own specific DCI size and detection parameters. This segmentation allows the terminal to distinguish between single and multiple carrier scheduling scenarios through different DCI sizes, thereby simplifying the detection process while managing protocol complexity through structured organization
Solution Approach 2:
The patent changes key parameters including DCI size, carrier combination configuration, and detection parameters based on the scheduling scenario. By aligning DCI sizes for different carrier combinations and configuring specific detection parameters for each combination type, the system enables simplified PDCCH detection while maintaining the ability to handle both single and multiple carrier scenarios through parameter differentiation
2Productivity
If PDCCH detection is performed without aligning DCI sizes for different carrier combinations, then detection capabilities vary across carriers, but aligning DCI sizes balances detection capabilities and improves efficiency
Solution Approach 1:
The patent applies equipotentiality by aligning DCI sizes across different carrier combinations. This ensures that all carrier combinations have equivalent detection capabilities and requirements, allowing the terminal to perform PDCCH detection with consistent parameters regardless of whether single or multiple carriers are scheduled. This balancing act improves both detection efficiency and reliability by eliminating capability imbalances
Data Source
AI summary
Provided is a method for detecting a physical downlink control channel (PDCCH). The method is applicable to a terminal, and includes: performing a PDCCH detection based on a carrier combination, wherein the carrier combination includes one or more carriers. The carrier combination is preconfigured by a higher layer signaling. Performing the PDCCH detection based on the carrier combination includes: performing a PDCCH blind detection based on a PDCCH configuration defined by a network device for the carrier combination.