Bundled CSI-RS Resource Configuration for Wireless Terminal Reporting
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing channel state information (CSI) reports, particularly in supporting high data traffic, increased transmission rates, and low latency requirements, due to limitations in CSI reference signal (CSI-RS) configuration and reporting mechanisms.
Innovation Solution
The method involves configuring CSI-RS resources in a burst form for multiple time instances, allowing terminals to transmit a single CSI based on multiple CSI-RS resources in response to triggering information, enabling flexible and dynamic CSI measurement and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CSI-RS resources are configured for each time instance separately, then measurement precision is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent combines multiple CSI-RS resources across different time instances into a single bundled configuration. Instead of configuring separate CSI-RS resources for each time instance, the network bundles multiple CSI-RS resources and configures them as one unified resource that the terminal can measure across multiple time instances, reducing configuration complexity while maintaining measurement precision
Solution Approach 2:
The bundled CSI-RS resource serves multiple functions simultaneously - it can be used for CSI measurement across multiple time instances, supports both periodic and aperiodic reporting modes, and can be configured for different terminal scenarios (high-speed mobility, low-latency requirements), reducing the need for separate specialized configurations
2Loss of information
If multiple separate CSI reports are transmitted for different time instances, then information completeness is improved, but loss of time increases due to multiple reporting operations
Solution Approach 1:
The patent merges multiple CSI measurement results from different time instances into a single CSI report. The terminal measures the bundled CSI-RS resource across multiple time instances and combines these measurements to generate one comprehensive CSI report, reducing the number of separate reporting operations and saving time
Solution Approach 2:
The terminal performs preliminary measurements on the bundled CSI-RS resource across multiple time instances and prepares the combined CSI information in advance. When triggered by the network, the terminal can immediately transmit the pre-combined CSI report without needing to perform separate measurements and reports for each time instance, reducing reporting latency
3Adaptability or versatility
If CSI-RS resources are configured for multiple time instances, then adaptability is improved for high-speed communication, but use of energy increases due to extended measurement duration
Solution Approach 1:
The patent implements dynamic adaptability where the bundled CSI-RS resource configuration can be flexibly adjusted based on terminal mobility conditions and network requirements. The system can dynamically switch between using the bundled resource for multiple time instances (for high-speed mobility) or single time instance (for stable conditions), optimizing energy consumption while maintaining adaptability
Solution Approach 2:
The system changes key parameters of the bundled CSI-RS resource configuration based on communication conditions - adjusting the number of bundled resources, time instance spacing, and measurement duration according to terminal speed, channel conditions, and latency requirements, thereby optimizing the balance between adaptability and energy consumption
Data Source
AI summary
A method and an apparatus for channel state information report (CSI report) in a wireless communication system are disclosed. A method performed by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a network, configuration information related to N reporting settings and a plurality of CSI-RS resources, wherein the N is an integer greater than or equal to 1; receiving, from the network, triggering information indicating at least one reporting setting among the N reporting settings; and transmitting, to the network, a single CSI based on a plurality of time instances of the plurality of CSI-RS resources, in response to the triggering information. Here, the plurality of time instances may be related to the at least one reporting setting.