Sidelink CSI Exchange Using Frequency Resource Group Measurements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly the new radio (NR) system, there is a need for efficient methods and apparatuses to facilitate the exchange of channel state information (CSI) between terminals through sidelinks, enabling optimal scheduling of signals based on accurate channel measurements.
Innovation Solution
The method involves transferring indication information for CSI transmission, determining resource allocation for CSI exchange, and supporting various services like eMBB, mMTC, and URLLC by categorizing them into frequency resource groups (FRGs) for separate channel and interference measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel state information is exchanged between terminals through sidelinks, then data transmission optimization is improved, but device complexity increases
Solution Approach 1:
The patent segments the channel state information exchange process into distinct components: indication information transfer, resource determination, and separate frequency resource group measurements. This segmentation allows each component to be handled independently, reducing overall system complexity while maintaining transmission optimization benefits
Solution Approach 2:
The patent implements preliminary action by having terminals pre-determine resources for channel state information exchange and pre-categorize frequency resources into groups before actual data transmission. This advance preparation simplifies the real-time transmission process and reduces computational complexity during active communication
2Measurement precision
If separate frequency resource groups are used for channel and interference measurements, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent applies periodic action by systematically alternating between channel measurements on first frequency resource groups and interference measurements on second frequency resource groups. This periodic structure allows measurements to be performed in organized intervals rather than continuously, improving precision through dedicated measurement periods while managing time consumption through structured scheduling
Solution Approach 2:
The patent implements partial action by performing measurements on specific subsets of frequency resources (separated into groups) rather than measuring all frequencies simultaneously. This partial measurement approach achieves sufficient precision for each measurement type without the time cost of comprehensive simultaneous measurements
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The present disclosure relates to a communication technique for converging an IoT technology with a 5G communication system for supporting a higher data transfer rate beyond the 4G system, and a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail, security and safety related services, etc.) on the basis of 5G communication technologies and IoT-related technologies. Further, the present disclosure may be applied to a method and apparatus for transmitting/receiving channel state information in a communication system.