CSI-RS Configuration for Multi-Antenna Beam Management
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently transmitting and receiving channel state information reference signals in multi-antenna systems, particularly in 2D AAS and 3D-MIMO systems, which affects beam management and throughput.
Innovation Solution
A method for transmitting and receiving channel state information-reference signals (CSI-RS) is proposed, involving configuration of CSI-RS transmission through multiple antenna ports, with specific positioning of OFDM symbols and resource elements, and application of code division multiplexing (CDM) patterns to enhance signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel state information reference signals are transmitted in multi-antenna systems using conventional methods, then the system can support basic communication, but the beam management and throughput are insufficient for 2D AAS and 3D-MIMO systems
Solution Approach 1:
The patent segments the channel state information reference signal transmission by dividing it into multiple antenna ports with specific OFDM symbol positions and resource element configurations. This segmentation allows the system to manage complex multi-antenna transmissions through structured, organized signal divisions across different time-frequency resources
Solution Approach 2:
The patent extends reference signal transmission into additional dimensions by configuring specific OFDM symbol positions and resource element patterns across multiple antenna ports. This dimensional extension in time-frequency-space resources enables effective beam management and channel state acquisition for 2D AAS and 3D-MIMO systems
2Measurement precision
If configuration information for CSI-RS transmission is implemented with specific OFDM symbol positioning and resource element allocation, then channel state information acquisition is enhanced, but the system complexity increases
Solution Approach 1:
The patent applies local quality by assigning specific configuration parameters to different antenna ports, including distinct OFDM symbol positions and resource element patterns. This localized configuration optimization allows precise channel state measurement for each antenna port while maintaining overall system manageability through structured parameter organization
3Productivity
If code division multiplexing patterns are applied to CSI-RS transmission through multiple antenna ports, then signal transmission efficiency is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring code division multiplexing patterns and resource element allocations for different antenna ports before transmission. This preliminary structuring of orthogonal codes and resource patterns enables efficient signal transmission while facilitating receiver detection through known, predetermined measurement configurations
Data Source
AI summary
Disclosed are a method for transmitting and receiving a channel state information reference signal in a wireless communication system and a device therefor. Specifically, a method for transmitting, by a base station, a channel state information-reference signal (CSI-RS) in a wireless communication system includes: transmitting configuration information of the CSI-RS to user equipment (UE); and transmitting, to the UE, the CSI-RS through one or more antenna ports, in which the position of an orthogonal frequency division multiplexing (OFDM) symbol for transmitting the CSI-RS may be configured by the configuration information, and the position of a resource element (RE) for transmitting the CSI-RS may be determined by M RE units (M is 1 and/or 2 and/or 4 and/or 8).