Super-cell CSI-RS Configuration for Accurate Channel Reporting
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Solution Overview
Problem
In super-cell networks, the existing methods for configuring channel-state information reference signals (CSI-RS) lead to inaccurate reporting of channel quality indicators (CQI), precoding matrix indicators (PMI), and rank indicators (RI) by user equipment, resulting in lost traffic due to mismatched antenna configurations, which affects data throughput.
Innovation Solution
Configuring two sets of CSI-RS signals, one with a number of ports equal to the maximum configurable ports of the first sub-cell and another with ports equal to the maximum configurable ports of the second sub-cell, allowing the base station to determine which set to activate based on the user equipment's sub-cell membership, ensuring accurate reporting and scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single set of CSI-RS is configured for the super-cell, then the configuration is simple and resource overhead is low, but the terminal cannot identify different antenna configurations of sub-cells, leading to inaccurate channel quality reporting and traffic loss
Solution Approach 1:
The patent divides the super-cell CSI-RS configuration into multiple separate CSI-RS sets, each corresponding to a specific sub-cell with its own antenna configuration. The terminal is configured with multiple CSI-RS resources, each associated with a particular sub-cell ID, allowing accurate measurement and reporting for each sub-cell's specific antenna setup while maintaining overall system organization.
Solution Approach 2:
The patent applies local quality by configuring different CSI-RS parameters (number of ports, resource locations) specifically tailored to each sub-cell's antenna configuration. Each CSI-RS set is optimized for its corresponding sub-cell's characteristics, enabling the terminal to report accurate channel quality indicators specific to each sub-cell's local conditions rather than using a generic configuration.
2Measurement precision
If multiple CSI-RS sets are configured for different sub-cell antenna configurations, then accurate channel quality reporting is achieved, but the configuration complexity and resource overhead increase
Solution Approach 1:
The patent creates a universal CSI-RS configuration framework where a single base configuration can be adapted to serve multiple sub-cells with different antenna setups. By using configurable parameters such as sub-cell ID associations and scalable port numbers, the same CSI-RS configuration structure can universally accommodate various sub-cell configurations without requiring entirely separate configurations for each case.
Solution Approach 2:
The patent utilizes parameter changes to adapt the CSI-RS configuration to different sub-cell requirements. Key parameters such as the number of CSI-RS ports, resource element positions, and sub-cell ID associations can be dynamically adjusted based on the specific sub-cell's antenna configuration, allowing the system to maintain accuracy while managing complexity through flexible parameterization rather than rigid structural changes.
Data Source
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AI summary
The embodiment of the present application relate to a technical filed of wireless communication, and disclose a data scheduling method, a data scheduling device and a computer readable storage medium. The method includes: obtaining a number of first characteristic signal ports and a number of second characteristic signal ports of a super-cell; configuring a first channel-state information reference signal and a second channel-state information reference signal for a user equipment accessed to the super-cell; determining whether to activate the second channel-state information reference signal according to a maximum number of configurable ports of a sub-cell where the user equipment belongs to; in response to activating the second channel-state information reference signal, triggering, by the second channel-state information reference signal, the user equipment to report second channel characteristic parameters, and performing the PDSCH scheduling for the user equipment according to the second channel characteristic parameters.