CSI Capability Reporting for Time-Domain PMI Configuration
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Solution Overview
Problem
Current CSI reporting methods in MIMO systems fail to consider the impact of time domain configurations, leading to mismatched processing complexity and potential reporting failures in terminal devices.
Innovation Solution
The method involves the network device obtaining and utilizing capability information about the terminal device's time domain units for PMI, ports, and CSI-RS resources to configure CSI reporting parameters, ensuring the terminal device's capability is accurately reflected, thereby improving CSI reporting effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device configures CSI reporting parameters without considering time domain units, then the spatial and frequency domain configurations are optimized, but the terminal device's processing complexity becomes mismatched with its actual capability, leading to CSI reporting failure
Solution Approach 1:
The patent introduces time domain units as a new parameter to characterize terminal device capability for PMI calculation. The network device configures the quantity of time domain units based on terminal capability information, thereby adjusting the CSI reporting parameters to match the terminal's actual processing capacity. This parameter change resolves the mismatch between configured complexity and actual device capability.
Solution Approach 2:
The patent enables dynamic adjustment of CSI reporting configuration by introducing capability information exchange between terminal and network device. The network device adapts the quantity of time domain units based on the terminal's reported capability, making the system flexible and adaptable to different terminal processing capacities rather than using a fixed configuration.
2Measurement precision
If the network device increases the quantity of time domain units for PMI, then the CSI reporting accuracy is improved, but the terminal device's processing burden increases, potentially causing reporting failure
Solution Approach 1:
The patent uses the quantity of time domain units as a controllable parameter that balances accuracy and energy consumption. By configuring this parameter based on terminal capability, the system achieves optimal CSI reporting accuracy while keeping the terminal's processing energy consumption within acceptable limits.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device reports its capability information (including maximum supported time domain units) to the network device. The network device uses this feedback to appropriately configure the quantity of time domain units, ensuring that accuracy requirements are met without overburdening the terminal's processing energy.
Data Source
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AI summary
This application provides a capability reporting method and an apparatus, to improve effectiveness of CSI report reporting, and may be applied to a communication system. The method includes: A terminal device generates first information. The first information includes at least one piece of capability information of the terminal device, and the capability information indicates a quantity of time domain units supported by the terminal device for a precoding matrix indicator PMI. The terminal device sends the first information to a network device.