NR CSI Reporting with Same-Type RS Resource Configuration
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Solution Overview
Problem
Existing CSI reporting methods in wireless communication systems, particularly in NR systems, require enhancement to support advanced technologies like AI/ML-based CSI reporting and network energy saving, and need to address the complexity and cost of hardware resources.
Innovation Solution
A unified design for CSI reporting that limits RS resources to the same resource type, using higher-layer signaling to indicate RS resources with consistent parameters, allowing for improved system performance, reduced overhead, and simplified design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing RS resource configuration is used to support multiple resource types, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent divides RS resources into separate configurations based on resource types (e.g., CRI-based and SSBRI-based CSI reporting). Each resource type has its own dedicated configuration parameters and reporting settings, which simplifies the hardware design by avoiding the need to handle all resource types in a single complex configuration structure.
Solution Approach 2:
Different RS resource configurations are tailored to their specific resource types with localized parameters. For example, CRI-based reporting uses specific RS resource indicators and measurement configurations, while SSBRI-based reporting uses different configurations. This local optimization reduces overall system complexity while maintaining adaptability for each resource type.
2Adaptability or versatility
If existing RS resource configuration is used to support multiple resource types, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent segments RS resource configurations into distinct types, allowing the system to implement only the necessary configuration structures for supported resource types. This reduces hardware costs by eliminating the need to provision for all possible resource type combinations in a single complex configuration system.
Solution Approach 2:
The patent uses lightweight, type-specific configuration parameters for each RS resource type rather than a comprehensive universal configuration structure. This approach reduces implementation costs by using simpler, more targeted configuration mechanisms that can be easily implemented without expensive hardware modifications.
3Reliability
If existing RS resource configuration is used, then backward compatibility is maintained, but system performance for new technologies is limited
Solution Approach 1:
The patent maintains backward compatibility by preserving existing RS resource configuration structures for traditional resource types while introducing separate configuration mechanisms for new resource types (such as AI/ML-based CSI reporting). This segmentation allows legacy systems to continue operating with existing configurations while new features can be added without interfering with established functionality.
Solution Approach 2:
The patent creates a universal RS resource configuration framework that can accommodate both traditional and emerging resource types through a unified higher-layer signaling mechanism. This multi-functional approach enables the system to support diverse CSI reporting technologies (including AI/ML-based reporting) while maintaining compatibility with existing deployments.
4Device complexity
If unified RS resource indication is used, then device complexity is reduced, but adaptability for different resource types is limited
Solution Approach 1:
The patent segments the indication mechanism into type-specific higher-layer signaling for different RS resource types. Each resource type has its own streamlined indication parameters, which reduces overall signaling overhead compared to a universal indication mechanism. At the same time, the segmented approach maintains flexibility by allowing each resource type to be indicated and configured independently according to its specific requirements.
Data Source
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AI summary
Disclosed in the present application are a method and apparatus used in a node for wireless communication. A first node receives a first information block, wherein the first information block indicates a plurality of RS resources; the first information block is carried by higher-layer signaling; the first information block only supports indicating a plurality of RS resources having the same resource type; the resource type of one RS resource is related to at least one of the following: - whether a cell associated with the RS resource is configured with a first parameter set, - and a CSI reporting amount reported by CSI associated with the RS resource; the first parameter set is used for determining at least one of a downlink receiving time and an uplink sending time; and a candidate of the CSI reporting amount comprises at least one of an L1-RSRP, an L1-SINR, a CRI, an SSBRI, an RI, a PMI, a CQI and an LI. The method has the advantages of improving system performance and flexibility, and simplifying a system design.