Reference Signal Association in MIMO Antenna Systems
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently associating different types of reference signals in multiple-input multiple-output (MIMO) antenna systems, which affects the performance of uplink and downlink channels.
Innovation Solution
The method involves receiving an indicator for uplink transmission that specifies the association between first and second reference signal ports for various precoding configurations, and then transmitting corresponding reference signals via multiple antenna panels using these precoding configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antenna panels are used for MIMO communication, then the communication capacity and reliability are improved, but the complexity of associating reference signals across different panels increases
Solution Approach 1:
The patent segments reference signals into different types (first reference signals for channel estimation, second reference signals for precoding matrix indication) and associates them through explicit indicators. This segmentation allows independent optimization of each reference signal type while maintaining their relationships through structured associations across multiple antenna panels.
Solution Approach 2:
The patent introduces a new dimension of reference signal association by establishing explicit mappings between first and second reference signal ports through indicators. This dimensional approach organizes the complex multi-panel associations in a structured manner, transforming the complexity management from spatial organization to signal port relationship organization.
2Measurement precision
If explicit reference signal associations are established for multiple precoding configurations, then the transmission precision is improved, but the signaling overhead increases
Solution Approach 1:
The patent creates universal reference signal associations that work across multiple precoding configurations and antenna panels. The same association framework and indicator structures are reused for different precoding scenarios, reducing the need for separate signaling for each configuration and thereby reducing overall signaling overhead.
Solution Approach 2:
The patent uses indicator parameters to dynamically associate reference signal ports based on precoding configurations. By changing the indicator values rather than reconfiguring the entire reference signal structure, the system achieves precise control over reference signal associations with minimal signaling overhead.
Data Source
AI summary
Aspects of the present disclosure include methods, apparatuses, and computer readable media for receiving an indicator for uplink transmission indicating at least an association between at least one of one or more first reference signal ports and at least one of one or more second reference signal ports for a plurality of precoding configurations, transmitting, in response to receiving the indicator, a plurality of first reference signals via a plurality of antenna panels using the plurality of precoding configurations, wherein the plurality of first reference signals is associated with the one or more first reference signal ports, and transmitting one or more second reference signals based on the association via the plurality of antenna panels using the plurality of precoding configurations, wherein the one or more second reference signals is associated with the one or more second reference signal ports.