CSI Report Consolidation for High Mobility Signaling
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Solution Overview
Problem
In high mobility scenarios, the feedback period of Channel State Information (CSI) in mobile communication systems is either too long, leading to poor real-time performance and reduced accuracy, or too short, resulting in large signaling overhead.
Innovation Solution
The method involves transmitting and receiving CSI reports that include measurements from at least two channel state information reference signal (CSI-RS) transmission occasions within one period, allowing for the selection of measurement results at different time domain positions, thereby improving real-time accuracy while reducing signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the feedback period of CSI is made shorter to improve real-time performance, then the real-time accuracy is improved, but the signaling overhead increases
Solution Approach 1:
The patent combines multiple CSI measurements from different transmission occasions into a single CSI report. By merging measurement results from at least two CSI-RS transmission occasions within one period, the system achieves improved real-time accuracy without proportionally increasing signaling overhead, as multiple measurements are consolidated rather than transmitted separately.
Solution Approach 2:
The patent performs preliminary measurements of CSI-RS at multiple transmission occasions before generating the final CSI report. By conducting these measurements in advance during the same period, the system prepares multiple data points that can be combined to improve accuracy without requiring separate feedback transmissions for each measurement.
2Quantity of substance
If the feedback period of CSI is made longer to reduce signaling overhead, then the signaling overhead is reduced, but the real-time performance deteriorates
Solution Approach 1:
The patent merges multiple CSI measurements taken at different transmission occasions into a single consolidated CSI report. This combining approach allows the system to maintain longer feedback periods (reducing signaling overhead) while still achieving improved real-time accuracy through the aggregation of multiple measurements within the same period.
3Measurement precision
If multiple CSI-RS transmission occasions are measured to improve accuracy, then the real-time accuracy is improved, but the complexity of measurement increases
Solution Approach 1:
The patent employs a universal measurement approach where the terminal measures CSI-RS at multiple transmission occasions using the same measurement procedure and processing chain. This multi-functional measurement framework allows the terminal to handle multiple transmission occasions with a single standardized process, improving accuracy without proportionally increasing complexity.
Data Source
AI summary
Embodiments of the present application belong to the field of mobile communication and provide a CSI report sending method and apparatus, a CSI report receiving method and apparatus, a device, and a medium. A method comprises: sending a CSI report, the CSI report comprising: CSI corresponding to at least one instance of sending among least two instances of sending at least one CSI-RS within one period. At least one CSI-RS is sent at least twice within one period, and a UE selects a measurement result for at least one CSI-RS within one period and carries out reporting, enabling the UE to report measurement results of CSI-RSs at different time domain positions in a single CSI report; also, signaling overhead of a CSI reporting procedure is reduced.