Terminal Apparatus Index-Based Channel State Reporting
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Solution Overview
Problem
Current radio communication systems for fifth-generation cellular networks face inefficiencies in communicating channel state information between base station apparatuses and terminal apparatuses, particularly in managing interference and beamforming, which affects the performance of Massive Multiple-Input Multiple-Output (MIMO) technology.
Innovation Solution
The system includes a terminal apparatus and a base station apparatus that exchange and measure channel state information using specific settings and reference signals, with the terminal apparatus reporting measured interference, enabling efficient communication and beam management through the use of index-based settings for channel state reporting and interference measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple settings for channel state information reporting and interference measurement are configured, then measurement precision and communication reliability are improved, but device complexity and information management burden increase
Solution Approach 1:
The patent segments the configuration information into multiple distinct setting groups (first settings for CSI reporting, second settings for interference measurement reference signals, third settings combining both). Each setting group is independently configurable and identified by indices, allowing the terminal to process and manage them separately rather than as a monolithic configuration block.
Solution Approach 2:
The patent introduces an intermediary mechanism (the indexed setting configurations transmitted via higher layer signaling) that mediates between the base station's configuration requirements and the terminal's measurement tasks. The indices act as references that link reporting configurations to their corresponding measurement configurations, simplifying the management relationship.
2Reliability
If detailed settings for channel state information and interference measurement are provided, then communication reliability is improved, but loss of information and signaling overhead increase
Solution Approach 1:
The patent creates universal setting configurations that can serve multiple purposes. The first settings for CSI reporting and second settings for interference measurement are designed to be independently reusable and combinable through the third settings, allowing the same configuration structures to fulfill multiple measurement and reporting functions without requiring separate dedicated configurations for each.
Solution Approach 2:
The patent uses index-based referencing where the third setting configurations copy and combine elements from first and second settings. Instead of transmitting complete redundant configuration data, the system transmits indices that reference previously defined settings, effectively creating lightweight copies that reduce signaling overhead while maintaining complete measurement capabilities.
Data Source
AI summary
Provided is a terminal apparatus including: a reception unit configured to: receive first information including at least one first setting, receive second information including at least one second setting, receive third information including at least one third setting, and receive fourth information; a channel state measurement unit configured to measure channel state information; and a transmission unit configured to report the channel state information based on interference that is measured. In the terminal apparatus, the at least one first setting comprises a plurality of first settings for at least one report of the channel state information. Each of the plurality of first settings includes one first index. The at least one second setting comprises a plurality of second settings concerning at least one reference signal for measuring the interference. Each of the plurality of second settings includes one second index. The at least one third setting includes one of the first indices, one of the second indices, and one third index. The fourth information includes information for indicating at least one of the third indices.