CSI Sub-Configuration Reporting for Efficient Beam Management
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively reporting channel state information (CSI) based on sub-configurations, particularly in distinguishing antenna ports and power offset values, which affects energy consumption and beam management efficiency.
Innovation Solution
A method for configuring CSI reporting in wireless communication systems using sub-configurations distinguished by different power offsets and port subsets, including none zero power (NZP) CSI-RS for interference measurement, even when port subset indicators are not configured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CSI reporting is configured with multiple sub-configurations for different antenna ports and power offsets, then beam management efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the CSI reporting configuration into multiple sub-configurations, where each sub-configuration corresponds to a specific antenna port subset and power offset combination. This segmentation allows the system to handle different beam management scenarios independently, improving efficiency while managing complexity through structured organization
Solution Approach 2:
The patent introduces dynamic activation and deactivation of antenna ports within sub-configurations based on channel conditions and interference measurements. This dynamic approach allows the system to adapt to changing environmental conditions, optimizing beam management efficiency without permanently increasing complexity across all operating states
2Measurement precision
If port subset indicators are configured for all sub-configurations, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The patent extracts the port subset indicator configuration requirement, making it optional rather than mandatory for all sub-configurations. By removing the requirement for certain cases where it is not critical, the system maintains measurement precision where needed while reducing energy consumption from signaling overhead in other scenarios
Solution Approach 2:
The patent applies port subset indicators locally only to specific sub-configurations where they are most beneficial, rather than uniformly across all configurations. This localized application of the feature optimizes the balance between measurement precision and energy consumption by concentrating resources on critical measurement scenarios
3Reliability
If multiple antenna ports are activated simultaneously, then reliability is improved, but use of energy by stationary object increases
Solution Approach 1:
The patent implements periodic activation and deactivation of antenna ports based on channel conditions and interference patterns. Instead of keeping all ports continuously active, the system periodically evaluates the need for each port and activates only when necessary, maintaining reliability through periodic monitoring while reducing overall energy consumption
Solution Approach 2:
The patent enables the base station to discard (deactivate) antenna ports when they are not currently needed for reliable communication, and recover (reactivate) them when conditions change. This dynamic resource management maintains communication reliability by keeping ports available when needed while minimizing energy consumption by keeping them inactive during periods of lower demand
Data Source
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AI summary
The purpose of the present disclosure is to report channel state information (CSI) on the basis of sub-configurations in a wireless communication system, and the method performed by a terminal comprises the steps of: receiving configuration information for a CSI report comprising a list of a plurality of sub-configurations; and transmitting, to a base station, CSI comprising a measurement result based on at least one CSI-RS related to the CSI report.