mTRP CSI Interference Measurement Using CMR-IMR Codepoint Mapping
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Solution Overview
Problem
Existing wireless communication systems, particularly in NR and LTE, face challenges in effectively measuring dynamic interference for multiple transmission reception points (mTRP) channel state information (CSI), which is crucial for improving spectral efficiency and mobile broadband access.
Innovation Solution
The implementation of a method for wireless communication that configures user equipment (UE) with CSI reference signal (CSI-RS) resources for channel and interference measurement, utilizing a codepoint indicator to associate CMRs and IMRs, allowing for dynamic channel/interference hypothesis, especially in multiple TRP scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple CSI-RS resources are configured for channel and interference measurement in mTRP scenarios, then measurement accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments the interference measurement process by associating different IMRs with different CMRs through codepoint indicators. Each CMR (channel measurement resource) is paired with specific IMR(s) (interference measurement resource(s)) based on codepoint mappings, allowing the UE to separately measure and report interference for each TRP independently. This segmentation enables accurate multi-TRP interference measurement while managing system complexity through structured resource association.
2Productivity
If dynamic channel/interference hypothesis is enabled for mTRP CSI, then spectral efficiency is improved, but processing requirements increase
Solution Approach 1:
The patent implements preliminary action by pre-configuring codepoint associations between CMRs and IMRs through higher-layer signaling before actual CSI measurement. The network configures the UE with multiple CMRs and IMRs along with their corresponding codepoint mappings in advance. When dynamic channel/interference hypothesis is activated, the UE can directly use these pre-established associations to perform measurements without real-time configuration overhead, reducing processing power requirements while maintaining spectral efficiency improvements.
Data Source
AI summary
Aspects of the present disclosure provide techniques for channel state information (CSI) for multiple transmission reception point (mTRP) scenarios. The techniques may provide for dynamic interference measurement for mTRP CSI. A method that may be performed by a user equipment (UE) includes receiving a CSI reporting configuration configuring the UE with a plurality of CSI reference signal (CSI-RS) resources for channel measurement (CMRs) and a plurality of resources for interference measurement (IMRs). The method includes determining an indicator based on an association between one or more CMRs and one or more IMRs. A codepoint of the indicator is associated with an IMR or a set of IMRs by an order of the IMRs or the set of IMRs in the configuration, and is associated with a CMR, a CMR pair, or a part of the ports of a CMR. The method generally includes performing CSI measurement based on the association.