CSI-RS Port Sorting for Precise Channel State Measurement
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Solution Overview
Problem
Existing channel state information reference signal (CSI-RS) configurations fail to accurately reflect the positional and polarization relationships between antenna ports, leading to suboptimal channel measurement feedback, especially with larger numbers of ports such as 12 and 16.
Innovation Solution
The method involves configuring CSI-RS port configurations that include the number of CSI-RS port configurations that include the number of CSI-RS ports, pilot resource pattern components, and a CSI-RS port sorting mode to align port numbering with polarization and positional relationships, using code division multiplexing and grouping modes to enhance channel measurement precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing CSI-RS configurations are used with larger numbers of ports (12 and 16), then the system can support more antenna ports, but the accuracy of channel state feedback deteriorates due to failure to reflect positional and polarization relationships
Solution Approach 1:
The patent changes the port sorting mode parameter from conventional sequential numbering to polarization-based and position-based sorting. This parameter change enables the CSI-RS configuration to reflect the actual physical relationships between antenna ports, thereby maintaining measurement precision even when supporting larger numbers of ports (12 and 16).
Solution Approach 2:
The patent applies different sorting modes to different groups of ports based on their specific characteristics. By configuring port sorting modes that match the local polarization and positional relationships of antenna ports, the system optimizes channel state feedback accuracy for each group while supporting a total of 12 or 16 ports.
2Device complexity
If conventional port numbering is used, then the configuration is simple, but the positional and polarization relationships between antenna ports are not accurately reflected
Solution Approach 1:
The patent introduces feedback mechanisms where the network configures port sorting modes based on actual antenna port arrangements, and the terminal uses these configurations to accurately measure and report channel state information. This feedback loop ensures that positional and polarization relationship information is preserved and utilized in the channel state feedback.
Solution Approach 2:
The patent performs preliminary configuration of port sorting modes before channel state measurement. By pre-configuring the port sorting mode that reflects the actual antenna relationships, the system prepares the measurement process to accurately capture positional and polarization information without adding complexity during the measurement phase.
Data Source
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AI summary
The present disclosure provides a method and device for configuring a channel state information reference signal (CSI-RS), and a method and device for parsing CSI-RS. The configuration method includes: configuring configuration information of the CSI-RS by a base station; generating a signaling carrying the configuration information of the CSI-RS by the base station; and transmitting the signaling by the base station. The configuration information includes at least one of: a number of CSI-RS ports, a number K of components of a pilot resource pattern, a number N of ports of the components of the pilot resource pattern, and a CSI-RS port-sorting mode, where the CSI-RS port-sorting mode includes M types of candidate port-sorting mode, and M, K, and N are positive integers. The present disclosure solves a problem in the related art that the serial numbers or the sequence of antenna ports are unable to reflect the positional relationship and polarization property relationship of antennas in actual topology relationships, thereby improving the feedback channel precision and making full use of the signal transmission power.