Wireless Node CSI Reporting With Rank-Based Port Groups
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in generating accurate Channel Status Information (CSI) reporting, particularly in multi-antenna scenarios, which affects network energy efficiency and hardware complexity.
Innovation Solution
A unified design scheme for CSI reporting is introduced, considering different application scenarios such as multi-antenna and single-antenna panels, using CSI configuration information to indicate RS resources, and determining port groups for calculating CQI based on specific conditions, including port associations and ranks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If multi-antenna transmission techniques are used to improve communication performance, then network energy efficiency is improved, but hardware complexity increases
Solution Approach 1:
The patent segments the antenna ports into multiple port groups, where each port group corresponds to a specific rank and contains ports that can be used for CSI calculation. This segmentation allows the UE to selectively measure and report CSI based on the activated port group, reducing the overall measurement complexity while maintaining multi-antenna transmission benefits.
Solution Approach 2:
The patent introduces dynamic adaptation of spatial elements through configurable port groups and ranks. The network can dynamically configure which port groups are active and which ranks are supported, allowing the system to adapt to varying channel conditions and traffic requirements. This dynamic configuration reduces hardware complexity by enabling selective activation of antenna resources rather than requiring all antennas to be permanently active.
2Use of energy by moving object
If dynamic adaptation of spatial elements is implemented to improve energy efficiency, then network energy efficiency is improved, but device complexity increases
Solution Approach 1:
The patent employs preliminary action by pre-configuring multiple port groups and their corresponding ranks through higher-layer signaling (CSI configuration information). The UE receives and stores these configurations in advance, so when CSI reporting is triggered, the UE can quickly select from the pre-configured options without performing complex real-time calculations. This reduces device complexity during operation while maintaining energy efficiency benefits.
Solution Approach 2:
The patent changes key parameters such as the number of active port groups, the rank values, and the association between ports and port groups. By dynamically adjusting these parameters based on channel conditions and network requirements, the system achieves energy efficiency without requiring complex hardware modifications. The UE simply adapts its measurement and reporting behavior based on the configured parameters.
3Device complexity
If unified design scheme is used for different scenarios to reduce hardware complexity, then hardware complexity is reduced, but CSI reporting accuracy may be affected
Solution Approach 1:
The patent creates a universal CSI reporting framework that works across different scenarios (single-antenna panel, multi-antenna panel, different ranks) through a common port group configuration mechanism. The same basic framework of port groups, ranks, and CSI calculation is applied universally, reducing hardware complexity by avoiding scenario-specific implementations. Accuracy is maintained because the universal framework includes all necessary components to handle different scenarios appropriately through configuration rather than hardware differentiation.
Solution Approach 2:
While the overall framework is unified, the patent applies local quality by allowing different port groups to be configured with different properties suitable for specific scenarios. Each port group can be associated with specific antenna ports and ranks appropriate for the local scenario requirements. This allows the system to maintain a simple unified hardware architecture while achieving scenario-optimized CSI reporting accuracy through localized configuration adjustments.
Data Source
Figure 1~3
Figure 4~6
Figure 7~12
AI summary
Disclosed in the present application are a method and apparatus in a node used for wireless communication. A first node receives first CSI configuration information, receives first signaling, receives a first RS resource, and sends first CSI reporting, wherein R index groups respectively correspond to R ranks on a one-to-one basis; the first signaling is used for determining a first port group; the first CSI reporting comprises a first rank and a first CQI; a first index group is an index group among the R index groups that corresponds to the first rank; a reference port group comprises all ports of the first RS resource that are indicated by the first index group; the first CQI is calculated using at least one port in the reference port group as a condition; the first rank is selected only from ranks among the R ranks that satisfy a first condition; and the first condition comprises the port of the first RS resource that is indicated by at least one index in the corresponding index group being associated with the first port group.