Sidelink CSI Reporting for Network Scheduling and Precoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sidelink communication systems in wireless networks lack network entity information, which hinders effective scheduling of UE transmissions and precoding matrix indicator signaling, leading to inefficiencies in resource allocation and communication quality.
Innovation Solution
Generating and reporting two distinct channel state information (CSI) reports, one to the requesting UE and another to the network entity, based on the sidelink CSI reference signal, to enhance scheduling and precoding capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If only a single CSI report is generated and sent to the requesting UE, then the device complexity is reduced, but the network entity lacks necessary channel status information for effective scheduling and precoding
Solution Approach 1:
The patent divides the CSI reporting mechanism into two separate reports: a first CSI report sent to the requesting UE and a second CSI report sent to the network entity. This segmentation allows each recipient to receive tailored information - the requesting UE gets channel state information for direct communication optimization, while the network entity gets the necessary information for scheduling and precoding decisions. The segmentation resolves the contradiction by distributing information to appropriate destinations without requiring a single overly complex reporting mechanism.
2Measurement precision
If additional CSI reports are generated for network entity scheduling, then the scheduling precision and precoding accuracy improve, but the signaling overhead and processing requirements increase
Solution Approach 1:
The patent applies local quality by tailoring the content and destination of CSI reports to specific needs. The first CSI report is optimized for the requesting UE's local communication needs, while the second CSI report is specifically formatted for network entity scheduling requirements. This localized approach ensures that each recipient gets precisely the information they need without unnecessary overhead, improving measurement precision while maintaining resource allocation efficiency.
3Manufacturing precision
If the network entity is informed of CSI details, then the precoding matrix indicator signaling becomes more accurate, but the information processing burden on the network increases
Solution Approach 1:
The patent extracts and separates the CSI information into a dedicated second CSI report that is specifically formatted for network entity consumption. This extraction allows the network entity to receive precisely the channel status information needed for accurate precoding matrix indicator signaling without being overwhelmed by unnecessary data. The separation simplifies network processing by presenting information in a structured, purpose-specific format rather than requiring the network to process all possible CSI data.
Data Source
AI summary
Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for providing two channel state information (CSI) reports based on sidelink CSI reference signal (RS) respectively to a sidelink user equipment (UE) and a network entity (e.g., a base station). Existing sidelink CSI reporting between UEs is not shared with the network. The lack of information on the network side prevents scheduling improvements. Therefore, by generating a second CSI report to the network, the network can have information to better schedule sidelink UE transmissions and to introduce precoding matrix indicator (PMI) signaling.