DCI Detection for MBS Services Using CFR Configuration
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Solution Overview
Problem
Current communication systems lack a method for determining how to detect and receive downlink control information (DCI) for multi-broadcast scheduling (MBS) services when a common frequency resource (CFR) is not configured within the Bandwidth Part (BWP), leading to transmission inefficiencies and detection errors due to lack of shared configuration parameters among terminals.
Innovation Solution
A method and apparatus that determine how to detect and receive DCI for MBS services based on a CFR configuration, either by using a CORESET or search space included in the CFR configuration, or by employing a predetermined mode or RRC signaling to determine the search space and size of the DCI within an active BWP, ensuring consistent understanding and efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CFR configuration is not provided for MBS service, then terminals cannot determine DCI detection methods, but providing CFR configuration increases system complexity and signaling overhead
Solution Approach 1:
The patent applies preliminary action by pre-configuring default search space and DCI size parameters in the terminal device before CFR configuration is provided. When CFR is not configured, the terminal can immediately use these pre-set parameters to detect DCI without requiring real-time configuration, thus ensuring detection reliability while avoiding additional signaling overhead.
Solution Approach 2:
The patent enables self-service by allowing the terminal device to autonomously determine DCI detection parameters using pre-configured information when CFR is not provided. The terminal independently selects search space and DCI size based on local configuration without needing network device intervention, reducing signaling complexity while maintaining reliable detection.
2Reliability
If CFR configuration is provided for MBS service, then DCI detection is reliable, but transmission overhead increases
Solution Approach 1:
The patent reduces signaling overhead by performing preliminary configuration of search space and DCI size parameters in the terminal before actual MBS service transmission. This allows the network to avoid repeatedly signaling these parameters via CFR, as the terminal already has the necessary information from initial configuration.
Solution Approach 2:
The patent extracts the essential DCI detection parameters (search space, DCI size) from the CFR configuration and provides them separately through dedicated RRC signaling. This separation allows the terminal to obtain necessary parameters without receiving the complete CFR configuration, reducing the amount of information that needs to be transmitted.
3Adaptability or versatility
If terminals use different methods to detect DCI without CFR configuration, then system flexibility increases, but detection errors increase
Solution Approach 1:
The patent ensures homogeneity by configuring all terminals with identical default search space and DCI size parameters through standardized RRC signaling. This uniform configuration ensures that all terminals in the network use the same detection method when CFR is not provided, eliminating detection errors caused by inconsistent interpretations while maintaining system flexibility.
Data Source
AI summary
A method for transmitting downlink control information (DCI). The method includes: determining how to detect and receive DCI for scheduling a multi-broadcast scheduling (MBS) service based on a common frequency resource (CFR) configuration of a network device. Further, a communication apparatus is provided.