CSI Reporting Priority Management in 5G NR Beamforming
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Solution Overview
Problem
In 5G wireless communication systems, especially in new radio (NR) networks operating at higher frequency bands like 6 GHz, path attenuation increases, reducing the coverage area and requiring efficient beam management and CSI reporting to concentrate transmission power effectively, while existing methods struggle to prioritize and manage CSI reporting efficiently.
Innovation Solution
A method and apparatus for terminals and base stations to efficiently report CSI and beam management-related information, prioritizing CSI reporting associated with Reference Signal Received Power (RSRP) over others, using CSI feedback configuration information to identify and manage overlapping CSI reportings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If beamforming and beam management are implemented to concentrate transmission power in higher frequency bands, then path attenuation is reduced and transmission distance is increased, but the number of supported beam directions is reduced and system complexity increases
Solution Approach 1:
The patent segments beam management into distinct components: beam identification, beam indication, and CSI reporting. By dividing the complex beam management process into manageable segments, the system can handle high-frequency beamforming more effectively while reducing overall system complexity through structured organization of functions.
Solution Approach 2:
The patent introduces a new dimension to beam management by associating beams with specific reference signals (RSRP-based beams) and creating a hierarchical structure where beams are organized by their association with reference signals. This dimensional organization allows for more efficient beam selection and management in high-frequency systems.
2Loss of information
If multiple CSI reportings are configured simultaneously, then comprehensive channel state information is obtained, but overlapping reportings occur and information management becomes inefficient
Solution Approach 1:
The patent performs preliminary action by pre-configuring CSI reporting settings and identifying potential overlaps before actual reporting occurs. The system determines in advance which CSI reportings should be prioritized based on their association with reference signals, allowing for efficient management of multiple reportings without information loss.
Solution Approach 2:
The patent implements feedback mechanisms where the terminal reports CSI information back to the base station, and the base station uses this feedback to adjust subsequent reporting configurations. This feedback loop ensures that overlapping CSI reportings are managed efficiently while maintaining comprehensive information collection.
3Device complexity
If CSI feedback configuration is simplified, then device complexity is reduced, but the ability to prioritize and manage overlapping reportings is compromised
Solution Approach 1:
The patent applies local quality by assigning different priorities and characteristics to different CSI reportings based on their specific properties. Not all CSI reportings are treated equally; instead, each reporting is evaluated locally for its association with reference signals and prioritized accordingly. This allows simplified configuration while maintaining reliable priority management through localized differentiation.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure provides a priority of CSI reporting in a mobile communication system, and provides a method in which a UE performs CSI reporting with high priority according to the priority. The method includes receiving channel state information (CSI) feedback configuration information from a base station; identifying a CSI reporting to be performed based on the CSI feedback configuration information, as a result of two CSI reportings overlapping; and performing the identified CSI reporting to the base station. The CSI reporting is identified based on types of CSI reportings, and a CSI reporting associated with a reference signal received power (RSRP) is prioritized over a CSI reporting that is not associated with the RSRP.