CSI-RS Resource Configuration for Multi-User Interference Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current channel state information (CSI) reference signal measurement methods in coordinated multipoint transmission/reception scenarios cannot effectively support multi-user interference measurement, as they typically involve a one-to-one correspondence between non-zero power (NZP) and zero power (ZP) CSI-RS resources, limiting their ability to handle multiple interference cases.
Innovation Solution
Configuring a resource set for channel measurement and another for interference measurement, where the channel measurement resource set includes one or more NZP CSI-RS resources, and the interference measurement resource set includes either NZP or ZP CSI-RS resources, allowing for flexible collocation and configuration to support various interference conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If one NZP CSI-RS resource and one ZP CSI-RS resource are configured in a one-to-one correspondence to form a measurement hypothesis condition, then the configuration is simple and manageable, but it cannot effectively support multi-user interference measurement
Solution Approach 1:
The patent divides the measurement hypothesis condition into separate components: channel measurement resources (CMR) and interference measurement resources (IMR) are independently configured and then associated through indication information. This segmentation allows multiple CMRs to be paired with multiple IMRs, enabling multi-user interference measurement while maintaining manageable configuration through modular resource sets
Solution Approach 2:
The patent creates universal resource sets where CMR resources and IMR resources can serve multiple measurement scenarios. By configuring resource sets that can be indicated through signaling, the same resources can be reused across different measurement hypotheses and user equipment, providing multi-functionality without proportionally increasing overall system complexity
2Adaptability or versatility
If multiple measurement hypothesis conditions are configured to support various interference cases, then multi-user interference measurement is supported, but the configuration complexity and resource overhead increase
Solution Approach 1:
The patent introduces dynamic indication mechanisms where the network can flexibly indicate which CMR and IMR resource sets to use for different measurement scenarios. This dynamic association allows the system to adapt to various interference cases without permanently configuring all possible measurement hypothesis combinations, reducing configuration overhead while maintaining comprehensive coverage
Solution Approach 2:
The patent changes the configuration parameters from fixed one-to-one mappings to flexible resource set associations with indication fields. By modifying how resources are parameterized and associated (through resource set IDs and indication information), the system achieves broader interference case coverage without linearly increasing configuration complexity
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In this application, for a CSI-RS resource-related configuration and indication problem, corresponding configuration and indication technologies are designed and include the following: A network device configures CSI-RS resources as a resource set used for channel measurement and a resource set used for interference measurement, and provides a plurality of correspondences between the resource set used for channel measurement and the resource set used for interference measurement. In another implementation, for a CSI-RS resource set, the network device configures that resources in the CSI-RS resource set include both the resource used for channel measurement and the resource used for interference measurement. The network device sends reference signal measurement indication information to a terminal to indicate the resource set used for channel measurement or which resource is used for channel measurement and which resource is used for interference measurement in a set. In this way, the network device performs flexible and diverse configuration on the CSI-RS resource, and reduces indication overheads as many as possible, thereby meeting a requirement of channel and interference measurement performed by a plurality of user terminals in an NR system.