PDCCH Candidate Set Mapping for Multi-Cell Scheduling
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in wireless signal transmission and reception procedures, particularly in managing multiple access systems and carrier aggregation scenarios.
Innovation Solution
The method and apparatus involve monitoring multiple physical downlink control channel (PDCCH) candidate sets within a search space (SS) on a scheduling cell, associating each set with a minimum cell index, and configuring PDCCH candidates accordingly to enhance efficient data communication across multiple cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple PDCCH candidate sets are monitored within a search space set on a scheduling cell, then communication efficiency is improved, but device complexity increases
Solution Approach 1:
The PDCCH candidate sets are segmented and associated with different cell indexes. Each PDCCH candidate set is specifically linked to a minimum cell index from among multiple cell indexes, allowing the UE to monitor multiple sets without overwhelming complexity by organizing them in a structured, indexed manner
Solution Approach 2:
Instead of having multiple PDCCH candidates monitor multiple cells equally, the patent inverts the approach by associating each PDCCH candidate set with a specific minimum cell index. This inversion creates a one-to-one mapping relationship that simplifies the monitoring process while maintaining efficiency
2Productivity
If PDCCH candidates are configured in a PDCCH candidate set associated with a minimum cell index, then signal transmission efficiency is improved, but configuration complexity increases
Solution Approach 1:
Each PDCCH candidate set is assigned a specific quality characteristic by associating it with a minimum cell index. This local quality assignment allows the system to optimize signal transmission for each cell independently while maintaining overall system efficiency
Solution Approach 2:
The patent changes the parameter of cell index association by always selecting the minimum cell index for PDCCH candidate configuration. This parameter change rule simplifies the configuration process by providing a deterministic selection criterion rather than requiring complex multi-parameter optimization
Data Source
AI summary
The present disclosure relates to a wireless communication system and, specifically, to a method and a device therefor, the method comprising the steps of: monitoring a plurality of PDCCH candidate sets within an SS set on a scheduling cell, to detect a PDCCH including scheduling information on at least one cell, wherein each PDCCH candidate set is associated with only one corresponding cell index, and if the at least one cell corresponds to a plurality of cells, PDCCH candidates for the PDCCH are configured in a PDCCH candidate set associated with a smallest cell index among cell indexes of the plurality of cells; and performing data communication on the at least one cell on the basis of the PDCCH.