MIMO-OTFS Reference Signal Configuration for High-Mobility Channel Measurement
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Solution Overview
Problem
The configuration of reference signals in MIMO-OTFS systems is a technical challenge due to the high terminal movement speeds in high-speed mobile environments, leading to issues like fast time-varying fading and Doppler shift.
Innovation Solution
A method for configuring reference signals in an orthogonal time frequency and space (OTFS) system by sending and receiving configuration information to/from a terminal, utilizing DD domain positions, sequence information, and guard interval symbols to ensure successful transmission and measurement of reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference signals are configured in MIMO-OTFS systems for high-speed mobile communications, then channel quality measurement is enhanced, but the system complexity increases due to the need for configuration information transmission and processing
Solution Approach 1:
The patent segments the reference signal configuration into multiple independent parameters including DD domain positions, sequence information, and guard interval symbols. This segmentation allows each parameter to be optimized independently for channel quality measurement while reducing the overall system complexity by breaking down the configuration task into manageable components that can be transmitted and processed efficiently
Solution Approach 2:
The patent implements preliminary configuration of reference signals before actual channel quality measurement. By pre-configuring the reference signal parameters (DD domain positions, sequences, and guard intervals) and transmitting this configuration information to the terminal device, the system prepares all necessary measurement settings in advance, thereby enhancing measurement precision without increasing real-time processing complexity
2Measurement precision
If configuration information is transmitted to terminal for reference signal setup, then reference signal measurement capability is improved, but information loss may occur during transmission
Solution Approach 1:
The patent incorporates feedback mechanisms where the terminal device receives configuration information from the network device and can confirm proper reception and processing of the reference signal parameters. This feedback loop ensures that configuration information is successfully transmitted and interpreted, preventing information loss and ensuring accurate reference signal measurement
Solution Approach 2:
The patent applies prior cushioning by including guard interval symbols in the reference signal configuration. These guard intervals provide time and frequency resources that cushion against potential information loss or interference during transmission, ensuring that the essential configuration information and measurement data are preserved even in challenging high-speed mobile communication environments
Data Source
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Figure 2B
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AI summary
The present disclosure provides a method for configuring a reference signal, an apparatus, and a storage medium. The method comprises: sending at least one set of configuration information to a terminal, wherein the configuration information is used for configuring a reference signal in an orthogonal time frequency space (OTFS) system. The method for configuring a reference signal provided in the present disclosure can be used to configure a reference signal in an MIMO-OTFS system, so as to implement transmission and measurement of the reference signal in the MIMO-OTFS system, thereby ensuring successful execution of related measurement (such as measurement of channel quality) in the MIMO-OTFS system.