Quasi Co-Location Indication for Phase Noise Estimation
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Solution Overview
Problem
Current communication technologies face challenges in indicating quasi co-location indication information and reference signal configuration for phase noise and frequency shift estimation, particularly in New Radio (NR) scenarios, due to limited types and configuration information of reference signals, leading to difficulties in satisfying diverse requirements and managing overheads.
Innovation Solution
A method is introduced to generate and send quasi co-location (QCL) indication information by a base station, configuring reference signals for phase noise and frequency shift estimation, allowing dynamic configuration based on antenna port relationships, and reducing overheads by grouping antenna ports and adjusting time-domain density according to specific scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference signal configuration information is increased to satisfy diverse NR scenarios, then the ability to estimate phase noise and frequency shift is improved, but signaling overhead increases
Solution Approach 1:
The patent segments reference signal configuration by creating multiple QCL parameter sets (first, second, third, fourth sets) with different time-domain densities. Each set is optimized for specific scenarios, allowing the system to select appropriate configurations without always transmitting maximum information, thus reducing overhead while maintaining estimation accuracy.
Solution Approach 2:
The patent changes the time-domain density parameter of reference signals across different QCL parameter sets. By adjusting this parameter based on scenario requirements and using indicator information to signal the selected set, the system achieves adaptive estimation accuracy without consistently using the highest density configuration, thereby reducing overall signaling overhead.
2Adaptability or versatility
If multiple types of reference signals are configured to support diverse scenarios, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal framework with multiple QCL parameter sets that can handle diverse NR scenarios. Each parameter set serves multiple purposes (different time-domain densities for different estimation requirements), allowing a single unified mechanism to provide adaptability across various scenarios without requiring separate specialized configurations for each case.
Solution Approach 2:
The patent introduces dynamic selection of QCL parameter sets through indicator information. The system can dynamically switch between different reference signal configurations based on current scenario requirements, making the complexity manageable through controlled dynamic adaptation rather than static complex configuration.
3Measurement precision
If reference signal time-domain density is increased, then estimation accuracy is improved, but resource consumption increases
Solution Approach 1:
The patent changes the time-domain density parameter of reference signals across different QCL parameter sets. By adjusting this parameter based on scenario requirements and using indicator information to signal the selected set, the system achieves adaptive estimation accuracy without consistently using the highest density configuration, thereby reducing overall signaling overhead.
Data Source
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AI summary
The present invention discloses a method for indicating quasi co-location indication information and a device, to diversify reference signal types and reference signal configuration information that are indicated by QCL. The method includes: generating, by a base station, reference signal configuration information; performing, by the base station based on the reference signal configuration information, quasi co-location QCL assumption on reference signals corresponding to at least two antenna ports in reference signals, to generate QCL indication information; and sending, by the base station, the QCL indication information to a terminal.