DMRS Pattern CSI Report Selection for Beam Management
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Solution Overview
Problem
Existing wireless communication systems face challenges in reliably indicating the selection of channel state information (CSI) report setting options, which affects the reliability of beam management for unicast channels.
Innovation Solution
The method involves using a demodulation reference signal (DMRS) pattern to indicate the selection of CSI report setting options, such as repetitious or non-repetitious transmissions, based on channel measurements like RSRP or SINR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional CSI report indication methods are used, then the system structure remains simple, but the reliability of beam management for unicast channels deteriorates
Solution Approach 1:
The DMRS pattern serves multiple functions: it provides demodulation reference signals for physical downlink shared channel and physical downlink control channel, while simultaneously indicating CSI report setting options. This multi-functionality improves beam management reliability without requiring separate indication mechanisms that would increase system complexity.
Solution Approach 2:
The DMRS pattern acts as an intermediary carrier that conveys CSI report setting information. By embedding this information in the DMRS pattern, the system achieves reliable beam management indication through an existing signal structure, avoiding the need for additional dedicated indication signals.
2Adaptability or versatility
If CSI report settings are fixed, then the system operation is simple, but the adaptability to different channel conditions deteriorates
Solution Approach 1:
The system enables dynamic selection of CSI report settings (repetitious or non-repetitious transmissions) based on channel conditions. The DMRS pattern can be configured to indicate different CSI report settings, allowing the system to adapt to varying channel conditions while maintaining operational simplicity through automated decision-making.
Solution Approach 2:
The system changes operational parameters by selecting different CSI report settings based on channel conditions. The DMRS pattern configuration allows the system to switch between repetitious and non-repetitious transmission modes, optimizing performance for different channel scenarios without complex manual intervention.
3Reliability
If repetitious CSI transmissions are used, then the reliability of CSI reports improves, but the transmission time and resource consumption increase
Solution Approach 1:
The system applies partial action by implementing repetitious transmissions only when necessary based on channel conditions. The DMRS pattern indication allows the system to select between repetitious and non-repetitious modes, avoiding unnecessary time consumption while maintaining reliability when needed, and using simpler single transmission when conditions permit.
Data Source
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AI summary
The present disclosure relates to selections of a channel state information (CSI) report setting option by a distinct demodulation reference signal (DMRS) pattern. Specifically, in one aspect, a user equipment (UE) may determine a CSI transmission setting based on the at least one measurement of the communication channel, the CSI transmission setting is associated with a distinct DMRS pattern, and transmit a CSI report with the distinct DMRS pattern to the network entity in accordance with the CSI transmission setting. In another aspect, a network entity may transmit CSI setting configuration information to a UE, the CSI setting configuration information including at least one parameter corresponding to a channel measurement threshold that triggers selection of a distinct DMRS pattern based on a CSI transmission setting, and receive a CSI report and the distinct DMRS pattern from the UE associated with the CSI transmission setting.