Group-Based Beam Reporting With L1-SINR Interference Accounting
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Solution Overview
Problem
Current group-based beam reporting in wireless communication systems lacks a clear definition for L1-SINR calculation, leading to potential interference between Tx beams used for simultaneous downlink transmissions, and existing resource configurations do not support selecting Tx beams from different TRPs.
Innovation Solution
A new definition of L1-SINR calculation is introduced for group-based beam reporting, where the UE measures and reports CRIs or SSBRIs while considering interference from other reported beams, and specific resource configurations are defined to enable simultaneous downlink transmissions from different TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If group-based beam reporting is used for multi-TRP transmission, then the UE can receive simultaneous downlink transmissions from multiple TRPs, but interference occurs between Tx beams used for simultaneous transmissions
Solution Approach 1:
The patent changes the parameter definition of L1-SINR calculation by introducing a new formula that specifically accounts for interference from other reported beams in group-based reporting. The new L1-SINR calculation uses the measured L1-RSRP of the reported beam and subtracts the L1-RSRP of other reported beams, thereby quantifying and compensating for inter-beam interference in multi-TRP scenarios
Solution Approach 2:
The patent implements feedback by having the UE measure and report L1-SINR values along with L1-RSRP measurements for multiple beams. The gNB uses this feedback information about actual SINR conditions to make informed decisions about beam pairing and resource allocation, adjusting transmissions to minimize interference based on reported measurements
2Adaptability or versatility
If existing resource configurations are used for beam reporting, then the system maintains backward compatibility, but it cannot support selecting Tx beams from different TRPs
Solution Approach 1:
The patent segments the resource configuration into separate components: channel measurement resources (CMR) for L1-RSRP measurement, interference measurement resources (IMR) for capturing interference from other TRPs, and reference signal resources for different TRPs. This segmentation allows independent configuration and optimization of each resource type for multi-TRP operations
Solution Approach 2:
The patent creates universal resource configuration structures that can serve both single-TRP and multi-TRP scenarios. The resource setting framework supports configuring multiple CMR and IMR resources that can be selectively activated depending on whether single-TRP or multi-TRP operation is desired, making the system versatile without requiring completely separate configuration mechanisms
Data Source
AI summary
Embodiments of the present disclosure provide a communication method and device. The method comprises: the terminal measures at least two CSI-RS resources or SS/PBCH blocks selected from one or more resource settings configured for group-based SINR report; the terminal calculates SINRs of CRIs or SSBRIs corresponding to the selected CSI-RS resources or SS/PBCH blocks according to the measurement results of the selected CSI-RS resources or SS/PBCH blocks and the terminal reports the CRIs or SSBRIs and their SINRs to the network device.