CSI Reporting Framework for 5G Antenna Arrays
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Solution Overview
Problem
Existing channel quality reporting processes in wireless communication systems are inadequate for handling large, two-dimensional array transmit antennas, failing to efficiently report channel state information effectively.
Innovation Solution
The implementation of a method for user equipment (UE) and base station (BS) to configure and report channel state information (CSI) using a framework that includes CSI reporting settings, reference signal settings, and measurement settings, enabling efficient CSI acquisition and reporting for both downlink (DL) and uplink (UL) channels, particularly in 5G communication systems with multiple antenna elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing channel quality reporting processes are used, then the reporting process is simple, but it is inadequate for handling large, two-dimensional array transmit antennas and fails to efficiently report channel state information
Solution Approach 1:
The patent segments the CSI reporting process into distinct components: downlink CSI reporting settings, uplink CSI reporting settings, reference signal settings, and measurement settings. Each component is independently configurable and can be activated or deactivated based on operational needs. This segmentation allows the system to handle complex 2D antenna arrays by breaking down the overall CSI acquisition into manageable parts, improving reporting accuracy without overwhelming system complexity.
Solution Approach 2:
The patent introduces dynamic configuration capabilities where CSI reporting settings can be activated or deactivated based on operational conditions. The system can dynamically select which downlink and uplink CSI reporting settings to use, allowing adaptive response to changing channel conditions and antenna configurations. This dynamic approach enables efficient handling of large antenna arrays by only activating necessary measurement and reporting components.
2Productivity
If a framework with multiple CSI reporting settings and reference signal settings is implemented, then CSI acquisition efficiency is improved, but the system complexity increases
Solution Approach 1:
The patent creates a universal CSI reporting framework that can handle both downlink and uplink CSI acquisition using the same structural approach. The framework supports multiple reference signal types (CSI-RS, SRS) and multiple reporting settings that can be configured for different antenna configurations and channel conditions. This multi-functionality allows efficient CSI acquisition across diverse 5G scenarios without requiring separate specialized procedures for each case, improving productivity while managing complexity through standardization.
Solution Approach 2:
The patent implements preliminary configuration of CSI reporting settings and reference signal settings before actual CSI measurement and reporting occurs. The network can pre-configure multiple downlink and uplink CSI reporting settings along with associated reference signal settings, allowing the UE to efficiently perform measurements without real-time configuration overhead. This preliminary action prepares the system in advance for various antenna configurations and channel conditions, improving CSI acquisition efficiency.
3Reliability
If existing reporting processes are used, then the system operation is simple, but radio interface efficiency and coverage are not sufficiently improved
Solution Approach 1:
The patent implements comprehensive feedback mechanisms where the UE reports CSI based on configured downlink and uplink settings, and the network uses this feedback to optimize transmission parameters. The feedback loop includes CSI measurement based on reference signals, CSI reporting using configured formats, and network-side processing to adjust downlink and uplink configurations. This feedback-driven approach significantly improves radio interface efficiency and coverage by enabling adaptive optimization, while the pre-configured reporting settings simplify the operational complexity for both network and UE.
Data Source
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AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Methods and apparatuses for CSI reporting mechanisms are provided. An apparatus of a user equipment (UE) comprises at least one transceiver and at least one processor operably coupled to the at least one transceiver. The at least one processor is configured to determine channel state information (CSI) based on CSI settings comprising at least one CSI reporting setting, at least one resource setting, and a measurement setting. The at least one transceiver is configured to transmit the determined CSI to a base station (BS).