CORESET Configuration Flexibility for Wireless Control Channels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring control resource sets (CORESETs) for downlink control information, leading to constraints in systems with special System Information (SI) and paging coverage requirements, and result in wasteful use of broadcast resources due to duplicate information transmission.
Innovation Solution
The solution involves determining a first transmission parameter for monitoring downlink control channel scheduling and selecting either the same or different transmission parameters for additional signals, allowing flexibility and efficient resource use by indicating the selected parameters in the first signal sent by the base station, which can include different CORESET or search space configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station sets the same CORESET configuration for all types of downlink control information, then the broadcast resources are saved, but the flexibility for special SI and paging coverage requirements is reduced
Solution Approach 1:
The patent segments the CORESET configuration into different types: a first CORESET configuration for RMSI and a second CORESET configuration for other signals (paging, OSI, RAR). This segmentation allows the base station to broadcast only the first configuration (saving broadcast resources) while maintaining the ability to provide specialized second configurations when needed (满足 special SI and paging coverage requirements).
Solution Approach 2:
The wireless device autonomously determines which CORESET configuration to use by monitoring indication information in the first downlink control information. The device self-selects between the first and second CORESET configurations based on the signal type, eliminating the need for separate dedicated configurations for each signal type while maintaining flexibility.
2Adaptability or versatility
If additional CORESET configurations are required for some types of downlink control information, then the flexibility is improved, but the broadcast resources are wasted
Solution Approach 1:
The first CORESET configuration serves multiple functions: it is used for RMSI transmission and also serves as the default configuration for other signals (paging, OSI, RAR) when the second configuration is not applicable. This multi-functionality reduces the need for separate dedicated configurations, saving broadcast resources while maintaining versatility.
Solution Approach 2:
The patent applies local quality by providing specialized second CORESET configurations only when needed for specific signal types (e.g., paging, OSI, RAR) rather than universally for all signals. The indication information mechanism allows selective application of the second configuration only where locally required, avoiding unnecessary broadcast of redundant configurations.
3Quantity of substance
If the same CORESET configuration is used for all signals, then the broadcast overhead is reduced, but the coverage requirements for special SI and paging are constrained
Solution Approach 1:
The patent introduces dynamic flexibility through indication information that can dynamically switch between the first and second CORESET configurations based on the signal type. This dynamic mechanism allows the system to adapt to different coverage requirements (e.g., extended coverage for paging) without requiring permanent separate configurations, maintaining broadcast efficiency while ensuring reliability.
Solution Approach 2:
The indication information acts as an intermediary that mediates between the broadcast first CORESET configuration and the signal-specific requirements. It carries the necessary control information to guide the wireless device in selecting the appropriate configuration, enabling the system to meet special coverage requirements without increasing broadcast overhead.
Data Source
AI summary
A network node determines a first transmission parameter defining first time and/or frequency resources of a downlink control channel and selects between the first transmission parameter and a second transmission parameter to identify a receiver configuration for a wireless device. The second transmission parameter defines second time and/or frequency resources of the downlink control channel that are different from the first time and/or frequency resources. The network node transmits a first signal to the wireless device according to the first transmission parameter. The first signal comprises the second transmission parameter and a configuration indication indicating the receiver configuration selected by the network node for the wireless device. The network node transmits one or more second signals to the wireless device in accordance with the receiver configuration identified for the wireless device. The wireless device receives the first signal and the one or more second signals accordingly.