CSI Report Configuration for Spatial Domain Adaptation in Multi-TRP
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Solution Overview
Problem
In multi-TRP scenarios, existing technologies face challenges in configuring CSI reporting for spatial domain adaptation, leading to increased network power usage and reduced flexibility in supporting both spatial domain adaptation and multi-TRP operations.
Innovation Solution
The proposed solution involves transmitting and receiving a CSI report configuration that indicates a CSI-RS resource set with sub-configurations for spatial domain adaptation and multi-TRP CSI estimation and reporting, allowing the UE to report CSI for different spatial domain adaptation patterns and enabling the network node to perform spatial domain adaptation in multi-TRP scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If existing technologies are used for configuring CSI reporting in multi-TRP scenarios, then the system can support basic multi-TRP operations, but network power usage increases and flexibility for spatial domain adaptation is reduced
Solution Approach 1:
The CSI reporting configuration is segmented into multiple independent sub-configurations, each corresponding to different spatial domain adaptation patterns. This allows the network to selectively activate only the necessary sub-configurations for current multi-TRP operations, reducing overall power consumption while maintaining flexibility. Each sub-configuration can be independently configured with different CSI-RS resource sets, enabling granular control over spatial adaptation.
Solution Approach 2:
The system dynamically selects and activates specific sub-configurations based on current spatial domain adaptation patterns and multi-TRP operational requirements. This dynamic activation allows the network to adapt power consumption levels according to actual service needs, rather than maintaining all configurations active, thereby reducing power usage while preserving adaptability when needed.
2Loss of energy
If spatial domain adaptation is supported in multi-TRP scenarios, then power savings are achieved through deactivation of CSI-RS ports or antenna elements, but the complexity of CSI reporting configuration increases
Solution Approach 1:
The complex CSI reporting configuration is divided into multiple sub-configurations, each associated with specific spatial domain adaptation patterns. This segmentation simplifies the management complexity by organizing configurations into manageable units that can be independently controlled and activated based on current operational needs.
Solution Approach 2:
Multiple sub-configurations for different spatial domain adaptation patterns are pre-configured and stored in the system. When spatial adaptation is needed, the appropriate pre-configured sub-configuration is simply activated rather than configured in real-time, reducing the operational complexity while enabling power savings through selective deactivation of CSI-RS ports or antenna elements.
3Adaptability or versatility
If multiple sub-configurations are configured for different spatial domain adaptation patterns, then adaptability is improved, but the device complexity and configuration overhead increase
Solution Approach 1:
The configuration is segmented into multiple independent sub-configurations, each handling a specific spatial domain adaptation pattern. This modular approach improves adaptability by allowing selective activation of only the required sub-configurations, rather than maintaining a single complex configuration that must support all patterns, thereby reducing effective configuration overhead.
Solution Approach 2:
Each sub-configuration is designed to be universally applicable to specific spatial domain adaptation patterns, allowing the same sub-configuration structure to serve multiple purposes across different TRPs and scenarios. This multi-functionality reduces the need for entirely separate configurations for each pattern, lowering overall configuration overhead while maintaining high adaptability.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a channel state information (CSI) report configuration that indicates a CSI reference signal (CSI-RS) resource set for channel measurement, wherein the CSI-RS resource set is associated with a first one or more CSI-RS resources included in a first resource group and a second one or more CSI-RS resources included in a second resource group, and wherein the CSI report configuration further indicates a sub-configuration indicating at least one of: first configuration information for the first resource group and second configuration information for the second resource group, or third configuration information associated with one or more pairs of resources from the first resource group and the second resource group. The UE may transmit a CSI report including CSI that is in accordance with the sub-configuration. Numerous other aspects are described.