Wireless Communication CSI Measurement Resource Segmentation
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Solution Overview
Problem
Traditional wireless communication systems waste air-interface resources by requiring multiple Channel Quality Indicators (CQIs) for channel and interference measurements, which hampers efficient resource utilization and increases interference.
Innovation Solution
A method that distinguishes between different time-frequency resources, allowing for selective channel and interference measurements to calculate a single CQI, reducing overhead and improving transmission efficiency by associating specific resources with distinct cells and optimizing interference avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple CQIs are reported for different interference assumptions, then channel status information accuracy is improved, but air-interface resource overhead increases
Solution Approach 1:
The patent segments the interference measurement resources into multiple CSI-IM resource sets, each associated with different interference assumptions. The UE selectively measures and reports CQI based on the configured resource sets, enabling differentiated interference measurement without requiring exhaustive reporting of all possible interference scenarios. This segmentation allows the system to obtain accurate channel status information for specific interference conditions while reducing overall feedback overhead.
Solution Approach 2:
The patent creates a unified CSI reporting framework where a single CQI report can serve multiple interference assumptions through the configuration of multiple CSI-IM resource sets. The base station configures multiple downlink CSI-IM resources that can be universally used for different interference measurement purposes, and the UE generates CQI reports that are applicable across different transmission scenarios. This multi-functionality eliminates the need for separate dedicated measurement resources for each interference assumption.
2Reliability
If multiple CQIs are feedback for multiple interference assumptions, then transmission reliability is improved, but air-interface resource waste occurs
Solution Approach 1:
The patent implements dynamic CQI reporting where the UE selectively generates and reports CQI based on the configured CSI-IM resource sets and current channel conditions. The base station dynamically configures which interference assumptions should be measured and reported, allowing the system to adapt the level of reporting detail to the actual transmission reliability requirements. This dynamic approach ensures transmission reliability is maintained only when necessary, reducing unnecessary resource consumption during stable conditions.
Solution Approach 2:
The patent changes the parameter of interference measurement configuration by introducing multiple CSI-IM resource sets with different associations. Instead of requiring CQI feedback for all possible interference scenarios, the system configures specific resource sets that change based on network conditions and interference patterns. The UE adjusts its measurement and reporting parameters according to the configured resource sets, achieving reliable transmission with optimized resource usage.
3Measurement precision
If one-to-one correspondence between channel measurement resources and interference measurement resources is maintained, then measurement accuracy is preserved, but resource utilization efficiency decreases
Solution Approach 1:
The patent establishes a unified mapping relationship where multiple channel measurement resources can be associated with multiple interference measurement resources through configured CSI-IM resource sets. Instead of strict one-to-one correspondence, the system allows many-to-many relationships where a single interference measurement resource can serve multiple channel measurement resources, and vice versa. This universal mapping improves resource utilization efficiency while maintaining measurement accuracy through proper resource configuration.
Solution Approach 2:
The patent merges the configuration of channel measurement resources and interference measurement resources into a unified CSI resource set configuration. Multiple CSI-RS resources for channel measurement and multiple CSI-IM resources for interference measurement are combined and associated through configured resource sets. This merging allows the system to efficiently utilize available resources by combining them into coherent measurement groups, improving overall resource utilization while preserving the accuracy needed for reliable CQI reporting.
Data Source
AI summary
The present application discloses a method and a device for wireless communications. A first node receives first information and transmits a first measurement information set; where the first information indicates at least a first time-frequency resource set and a second time-frequency resource set, the first time-frequency resource set comprising at least a target first-type time-frequency resource and the second time-frequency resource set comprising multiple second-type time-frequency resources, and the first measurement information set comprising at least a first resource indicator, a second resource indicator and a first CQI; this application can improve transmission efficiency and reduce redundancy overhead.