CSI Measurement Process Configuration for Interference Accuracy
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Solution Overview
Problem
In the context of LTE R11, there is a need to consider configuration information for CSI processes and subframe sets due to varying interference conditions, which existing technologies do not adequately address, impacting interference measurement and data demodulation accuracy.
Innovation Solution
A method is introduced where a base station configures N CSI measurement processes for a terminal, including codebook subset restrictions, PMI-RI feedback, and subframe offset, allowing the terminal to perform interference measurements and feedback, and the CSI measurement processes are combined with subframe sets to handle different interference scenarios, enhancing adaptive capabilities and data demodulation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple CSI processes are configured to handle different interference conditions, then interference measurement accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments the interference measurement process by configuring multiple CSI (Channel State Information) processes, where each CSI process independently measures interference in specific subframe sets. This allows different interference conditions to be measured separately, improving accuracy while managing complexity through structured segmentation of the measurement task.
Solution Approach 2:
The patent implements dynamic configuration of CSI processes with flexible parameters including subframe offsets, periodicities, and resource allocations. Each CSI process can be independently activated or deactivated based on current interference conditions, allowing the system to adapt dynamically without permanently increasing complexity.
2Adaptability or versatility
If CSI measurement processes are combined with subframe sets, then adaptability to different interference scenarios is improved, but configuration complexity increases
Solution Approach 1:
The patent divides the measurement framework into distinct subframe sets (e.g., subframe set 0 and subframe set 1), where each set is associated with specific interference characteristics. CSI processes are then mapped to these segmented subframe sets, enabling targeted adaptation to different interference scenarios while maintaining manageable configuration through clear segmentation boundaries.
Solution Approach 2:
The CSI process configuration is designed to be universal and reusable across different subframe sets. The same CSI process template can be applied to multiple subframe sets with different parameters, reducing configuration complexity while maintaining high adaptability to various interference conditions.
3Measurement precision
If independent configuration of CSI processes is implemented, then measurement accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent merges common configuration parameters across multiple CSI processes to reduce signaling overhead. Parameters such as resource allocation patterns, measurement bandwidths, and reporting formats are shared among CSI processes, while only the specific差异化 parameters (such as subframe set associations and process-specific offsets) are independently configured and signaled.
Data Source
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AI summary
A method for configuring Channel State Information (CSI) feedback signalings, a method for feeding back CSI, a method for configuring data demodulation, a method for data demodulation, a method for configuring antenna port information, a method for obtaining antenna port information, base stations and terminals are disclosed. The method for configuring CSI feedback signalings includes: the base station configuring N CSI measurement processes used for measuring and feeding back CSI for the terminal, wherein, each of the N CSI measurement processes is independently configured with one or more of the following signalings through a terminal dedicated higher layer signaling: a codebook subset restriction, Precoding Matrix Indicator-Rank Indicator-Report (PMI-RI-Report), PMI feedback enabled, RI feedback enabled, RI feedback enabled according to reference process, PMI feedback enabled according to reference process, sub-band feedback enabled according to reference process, a feedback mode, a resource location fed back by Physical Uplink Control Channel (PUCCH) corresponding to CSI measurement process, subframe offset and cycle fed back by PUCCH corresponding to CSI measurement process, and an initialization sequence Identifier (ID) of PUCCH corresponding to CSI measurement process; and the base station sending the N CSI measurement processes to the terminal, wherein N is a positive integer.