UE Downlink Control Channel Candidate Linking Verification
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Solution Overview
Problem
In wireless communications, verifying resources associated with repetition-based linked downlink control channel candidates poses challenges due to processing complexity and interference, affecting communication reliability and efficiency.
Innovation Solution
A user equipment (UE) receives an indication from a base station that first and second downlink control channel candidates are linked, and applies a confirmatory rule to verify the valid positioning of downlink shared channel resources and reference signal resources relative to the control channel candidates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repetition-based linked downlink control channel candidates are used to improve communication reliability, then the position verification complexity and processing overhead increase
Solution Approach 1:
The patent applies parameter changes by modifying the confirmatory rule parameters - specifically changing from verifying multiple potential resource positions to verifying based on a fixed threshold parameter (K) that defines the maximum symbol distance. This parameter-based approach simplifies the verification process while maintaining reliability requirements for repetition-based linked candidates
Solution Approach 2:
The patent extracts the essential verification requirement from the complex position verification process. Instead of verifying all possible resource position relationships, it extracts and applies only the critical confirmatory rule: checking whether scheduled resources are within K symbols of the control channel candidate start position. This extraction reduces verification complexity while preserving communication reliability
2Manufacturing precision
If multiple downlink control channel candidates are linked and verified, then resource positioning accuracy improves, but processing time and overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-defining the confirmatory rule parameter K before resource allocation and verification. This predetermined parameter allows the UE to quickly verify resource positions without performing complex real-time calculations, thus improving positioning accuracy while minimizing processing time overhead
Solution Approach 2:
The patent uses parameter changes by implementing a threshold-based verification parameter (K symbols) that simplifies the positioning verification process. This parameter allows rapid determination of valid resource positions across multiple linked candidates, achieving high positioning accuracy with reduced processing time compared to exhaustive verification methods
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for a user equipment (UE) receiving, from a base station, an indication that first and second downlink control channel candidates are linked for repetition. The UE may decode downlink control information (DCI) from one or both candidates. The DCI may schedule shared channel resources in the same transmission time interval as at least one of the candidates, or the DCI may include a channel state information request that is associated with reference signal resources that are positioned in the same transmission time interval as one or both candidates. The UE may apply a rule to determine that the downlink shared channel resources or that the reference signal resources and the downlink control channel candidates are validly positioned. The UE may communicate (e.g., receive a downlink message or transmit a report) based on application of the rule.