Prioritized Channel State Information Report Transmission in 5G NR
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Solution Overview
Problem
The 5G NR mobile communications system faces reliability issues due to the inability to effectively transmit channel state information reports, particularly for ultra-reliable low-latency communication services, as existing methods do not adequately consider the varying block error rates (BLERs) that different services require.
Innovation Solution
A method for determining and prioritizing channel state information reports based on their corresponding BLERs, allowing for the selective transmission of reports over uplink channels, ensuring that higher priority reports are sent first, even if it means dropping lower priority reports when channel capacity is exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple channel state information reports with different BLER targets are transmitted, then the adaptability to different service requirements is improved, but the uplink channel capacity is exceeded and transmission reliability deteriorates
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different channel state information reports based on their BLER targets. High-priority reports (e.g., BLER≤10^-5 for URLLC) are ensured to be transmitted reliably, while low-priority reports may be dropped when channel capacity is exceeded. This differential treatment based on local characteristics (BLER requirements) resolves the contradiction by ensuring critical reports maintain high transmission reliability while still supporting multiple service types.
Solution Approach 2:
The patent segments the channel state information reports into different priority levels based on BLER targets. By dividing reports into high-priority (URLLC services) and low-priority (eMBB services) categories, the system can selectively transmit only the most critical reports when uplink capacity is limited, thus maintaining transmission reliability for essential services while still providing adaptability to different service requirements.
2Loss of information
If all channel state information reports are transmitted, then the information completeness is improved, but the transmission time increases and system efficiency deteriorates
Solution Approach 1:
The patent extracts and transmits only the essential channel state information reports based on priority levels. When uplink channel capacity is exceeded, the system selectively drops low-priority reports while ensuring high-priority reports are transmitted. This extraction of critical information maintains sufficient system operation capability while reducing transmission time and improving overall system efficiency.
Solution Approach 2:
The patent applies partial action by transmitting only a subset of channel state information reports rather than all reports. By sending only high-priority reports when capacity is limited, the system achieves sufficient information completeness for critical services while significantly improving transmission efficiency and reducing time consumption.
3Productivity
If channel state information reports are prioritized based on BLER, then the transmission efficiency is improved, but the device complexity increases due to priority determination mechanisms
Solution Approach 1:
The patent changes the parameter used for priority determination from complex multi-dimensional criteria to a simple BLER-based priority level. By mapping different BLER targets to specific priority levels (e.g., BLER≤10^-5 maps to high priority, BLER≤10^-3 maps to low priority), the system achieves efficient priority-based transmission while keeping the determination mechanism simple and easy to implement in devices.
Data Source
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AI summary
This application provides a channel state information report transmission method and a communications device. The method includes: determining N channel state information reports; and sending M of the N channel state information reports based on priorities of the N channel state information reports, where both N and M are positive integers greater than or equal to 1, and M is less than or equal to N; and the priority of the channel state information report is determined based on a priority of a block error rate BLER corresponding to the channel state information report. In this way, reliability of a mobile communications system is improved.