Terminal Extended Physical Downlink Control Channel Monitoring
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Solution Overview
Problem
In radio communication systems, existing methods fail to efficiently map transmission data intended for individual terminals or shared by multiple terminals, particularly when using extended physical downlink control channels, leading to suboptimal transmission efficiency.
Innovation Solution
The implementation of a terminal and base station system that monitors both physical and extended physical downlink control channels, with resource block pairs divided into partial blocks and logical resource elements, allowing for efficient mapping and identification of transmission data using CRC bits scrambled with unique identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If an extended physical downlink control channel is used to handle more terminals, then the number of terminals that can be handled increases, but transmission data cannot be efficiently mapped and specified for individual terminals or shared data
Solution Approach 1:
The patent segments resource block pairs into multiple partial resource block pairs, and divides logical resource elements into multiple components. This segmentation allows the extended physical downlink control channel to efficiently map transmission data for multiple terminals by distributing control information across divided resource elements, resolving the mapping inefficiency while handling increased terminal quantities
Solution Approach 2:
The patent introduces a new dimension of resource element organization by dividing logical resource elements into multiple components that can be mapped to different partial resource block pairs. This dimensional expansion enables more flexible and efficient data specification for individual and shared transmissions across the extended control channel
2Adaptability or versatility
If control information is transmitted using extended physical downlink control channel, then more terminals can be supported, but the ability to specify broadcast information and shared data is lost
Solution Approach 1:
The patent creates a universal mapping mechanism that works for both individual terminal data and shared broadcast information. By dividing logical resource elements into components and mapping them to partial resource block pairs, the system achieves multi-functionality where the same extended control channel structure efficiently specifies both dedicated and shared transmission data
Data Source
AI summary
A terminal that communicates with a base station monitors a physical downlink control channel that is arranged in a physical downlink control channel region and that specifies transmission of broadcast information, obtains higher layer control information that specifies monitoring in an extended physical downlink control channel region, which is different from the physical downlink control channel region, and, in a case where the higher layer control information has been obtained, monitors an extended physical downlink control channel that is arranged in the extended physical downlink control channel region and that specifies the transmission of the broadcast information instead of the physical downlink control channel arranged in the physical downlink control channel region.