CSI Process Configuration for Throughput Improvement
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Solution Overview
Problem
In communication systems like LTE, base stations face challenges in determining the channel state with multiple transmit antennas or varied antenna arrangements, leading to limitations in throughput improvement and coverage enlargement.
Innovation Solution
The implementation of a base station and terminal apparatus communication method that configures multiple CSI processes for reporting channel state information, allowing the selection of the CSI reference signal configuration with the best channel quality, enabling precise interference measurement and improved throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmit antennas or various antenna arrangements are used, then throughput and coverage can be improved, but the base station cannot accurately determine channel state
Solution Approach 1:
The invention divides the channel measurement function into multiple independent CSI processes, each associated with specific CSI reference signal configurations. This segmentation allows the terminal to measure and report channel state for different antenna configurations separately, enabling the base station to accurately determine channel state even with multiple transmit antennas by selecting the most appropriate CSI process based on reported channel quality indicators.
2Adaptability or versatility
If multiple CSI reference signal configurations are configured, then channel state awareness across various environments is improved, but device complexity increases
Solution Approach 1:
The invention enables dynamic selection among multiple CSI reference signal configurations through CSI processes. The terminal dynamically chooses the most suitable CSI configuration based on current channel conditions and reports channel quality indicators accordingly. This dynamic approach allows the system to adapt to varying environmental conditions without permanently configuring all possible antenna arrangements, thereby reducing overall device complexity while maintaining high adaptability.
Data Source
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AI summary
There are provided a base station apparatus, a terminal apparatus, and a commutation method, which are capable of improving throughput. A higher layer processing unit that configures a CSI process that is a configuration relating to reporting of a channel state information (CSI), for the terminal apparatus for which a prescribed transmission mode is configured, and a reception unit that receives the CSI based on the CSI process are included. The plurality of CSI reference signal configurations are configured for the CSI process, and information that is based on at least one CSI reference signal configuration, among the plurality of CSI reference signal configurations, is received as the CSI.