TRP Measurement Reporting for Adaptive CP Length Selection
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Solution Overview
Problem
In distributed MIMO systems, multipath delays vary due to different TRP positions, necessitating appropriate cyclic prefix (CP) lengths for optimal signal quality and coverage, which existing methods fail to address effectively.
Innovation Solution
A method where a network device configures measurement information to a terminal for channel quality assessment of candidate TRPs, and the terminal recommends optimal CP lengths and TRPs based on measurements, facilitating improved signal quality and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different CP lengths are used to cover different multipath delays from different TRPs, then signal quality and coverage are improved, but system complexity increases due to the need to select and manage multiple CP lengths
Solution Approach 1:
The patent changes the CP length parameter dynamically based on the measured multipath delay characteristics of different TRPs. The terminal measures the multipath delay for each candidate TRP and reports the appropriate CP length to the network device, which then configures the corresponding CP length for that TRP. This allows the system to adapt CP lengths to different propagation conditions without manually configuring multiple fixed CP length settings, thus improving signal quality while managing complexity through automated parameter adjustment.
2Measurement precision
If automated measurement and recommendation procedures are implemented, then optimal CP length and TRP selection is achieved, but signaling overhead and processing time increase
Solution Approach 1:
The patent implements preliminary action by having the terminal perform channel quality measurements and determine optimal CP lengths and TRP selections in advance before actual data transmission. The measurement configuration information is sent beforehand, allowing the terminal to prepare measurement results and recommendations proactively. This preliminary measurement and recommendation process enables the network device to quickly configure optimal parameters when needed, reducing real-time processing delays while maintaining measurement accuracy.
Data Source
AI summary
A method for reporting information includes: sending measurement configuration information to a terminal, the measurement configuration information indicating to the terminal a candidate TRP for a channel quality measurement; sending a reference signal of the candidate TRP to the terminal, the reference signal being used for the terminal to measure the candidate TRP; and receiving a recommended CP length and/or a recommended TRP sent by the terminal, the recommended CP length and/or the recommended TRP being determined by the terminal according to a measurement result of the candidate TRP.