Joint Channel Estimation Using Adaptive Time Domain Window Length
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Solution Overview
Problem
Existing joint channel estimation methods in wireless communication struggle with determining the optimal time domain window length for terminal devices, impacting power and phase consistency, and lack clarity on reporting strategies for maximum duration lengths.
Innovation Solution
A method and apparatus for determining the maximum duration length of terminal devices, selecting a reporting strategy, and calculating an actual time domain window length based on this strategy and maximum duration length for joint channel estimation processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed time domain window length is used for joint channel estimation, then the estimation processing is simplified, but power and phase consistency cannot be maintained for terminal devices with different maximum duration lengths
Solution Approach 1:
The patent applies dynamics by making the time domain window length adjustable rather than fixed. The terminal device determines its own maximum duration length and selects an appropriate time domain window length from multiple candidate lengths based on this maximum duration, allowing the system to adapt to different terminal capabilities while maintaining power and phase consistency.
2Adaptability or versatility
If the terminal device reports maximum duration length to the network device, then the network can configure appropriate parameters, but additional signaling overhead and reporting complexity are introduced
Solution Approach 1:
The patent extracts only the essential information (maximum duration length) that the terminal device needs to report to the network device. By identifying and reporting only this key parameter, the system achieves network configuration adaptability while minimizing signaling overhead compared to reporting all possible channel estimation parameters.
3Reliability
If multiple candidate time domain window lengths are provided, then power and phase consistency can be maintained, but the terminal device faces difficulty in selecting the optimal length
Solution Approach 1:
The patent implements feedback by having the terminal device determine its maximum duration length and use this information to select the appropriate time domain window length from multiple candidates. This feedback mechanism ensures that the selected window length is optimal for the specific terminal device, maintaining power and phase consistency while simplifying the selection process.
Data Source
AI summary
A joint channel estimation method includes: determining a maximum duration length of a terminal device, and determining a reporting strategy for the maximum duration length; determining an actual time domain window length according to the reporting strategy and the maximum duration length; and performing joint channel estimation processing according to the actual time domain window length.