MAC-CE CSI Reporting with Dynamic Resource Reallocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the allocation of resources for channel state information (CSI) reports in media access control (MAC) control elements (MAC-CE) is inefficient, leading to unused resources and reduced overall network performance.
Innovation Solution
A user equipment (UE) reallocates resources associated with unused CSI reports by transmitting a subset of CSI reports with used configuration IDs, allowing more detailed and accurate representation of channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources are allocated to all configured CSI reports, then resource allocation is simple and straightforward, but unused CSI reports waste resources and reduce network performance
Solution Approach 1:
The patent implements dynamic resource allocation for CSI reports by introducing a dynamic indication field that allows the UE to selectively indicate which CSI reports are currently valid and should be transmitted. This dynamic mechanism enables the system to adapt resource allocation to actual channel conditions and reporting needs, avoiding static allocation of resources to all configured reports regardless of their current validity or usefulness.
2Measurement precision
If all CSI reports are transmitted with full resource allocation, then measurement precision is maintained, but resource efficiency decreases due to unused reports
Solution Approach 1:
The patent extracts and separates the indication of valid CSI reports from the CSI reports themselves through a dynamic indication field. This allows the system to transmit only the necessary subset of CSI reports while maintaining full resource allocation for those that are transmitted, effectively removing the waste associated with transmitting invalid or unnecessary reports while preserving measurement precision for the reports that matter.
3Adaptability or versatility
If the system supports multiple CSI report configurations, then adaptability to different channel conditions is improved, but device complexity increases due to resource management overhead
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple CSI report configurations with different parameters (such as different channel conditions, precoding matrices, or resource allocations) before actual transmission occurs. The dynamic indication field then simply selects from these pre-prepared configurations, reducing the real-time complexity of resource management while maintaining high adaptability to various channel conditions.
Data Source
AI summary
A method for wireless communication by a user equipment (UE) includes receiving, from a network node, a first message indicating a set of channel state information (CSI) report configurations and a corresponding set of configuration identifiers (IDs). Each of the set of CSI report configurations may be associated with a respective one of set of CSI reports and a respective ID of the set of configuration IDs. The method also includes transmitting, to the network node, a second message indicating one or more used configuration IDs. The method further includes transmitting, to the network node, a first subset of CSI reports associated with the one or more used configuration IDs. One or more of the first subset of CSI reports may be reallocated resources associated with a second subset of CSI reports. Each of the second subset of CSI reports may be associated with an unused configuration ID.