RLC Status Reporting with Segmented Uplink Grant Allocation
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Solution Overview
Problem
In wireless communications, RLC status reporting can lead to delayed reports due to waiting for an appropriate uplink grant, causing memory overload and reduced uplink throughput, particularly in high downlink rate scenarios.
Innovation Solution
Implementing an AI/ML model that determines the appropriate format and size of RLC status reports based on available grants, balancing reporting with uplink data transmission, predicting necessary data, and encoding to minimize overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RLC status reports are transmitted using conventional methods, then reliability of status reporting is maintained, but uplink throughput is reduced and latency increases due to waiting for appropriate uplink grants
Solution Approach 1:
The patent segments the RLC status report into multiple parts, where the first part contains essential status information and the second part contains additional information. This allows the UE to transmit the first part immediately when uplink resources are available, while the second part can be transmitted later, thereby reducing latency and improving throughput without compromising overall reliability.
Solution Approach 2:
The patent applies partial action by transmitting only the essential first part of the status report immediately, rather than waiting for a complete uplink grant. This partial transmission approach allows the system to progress with available resources while completing the full status report transmission later, effectively addressing the throughput-latency tradeoff.
2Reliability
If RLC status reports are transmitted frequently to maintain reliability, then status reporting reliability is improved, but memory overload occurs and uplink resources are consumed excessively
Solution Approach 1:
The patent divides the status report into essential and non-essential parts, allowing the system to transmit only the critical first part immediately while deferring the second part. This segmentation prevents memory overload by avoiding the need to buffer the entire status report when resources are constrained, while still maintaining reliability through the transmitted essential information.
Solution Approach 2:
The patent uses partial action by transmitting only the essential first part of the status report when uplink resources are available, rather than attempting to transmit the complete report. This approach prevents excessive memory consumption and resource usage while maintaining sufficient reliability through the transmitted critical information.
3Reliability
If the UE waits for appropriate uplink grants before transmitting status reports, then transmission reliability is maintained, but throughput is reduced and latency increases
Solution Approach 1:
The patent segments the status report transmission into immediate first part transmission and subsequent second part transmission. This allows the UE to utilize available uplink resources for the essential first part without waiting for a complete grant, thereby improving throughput while maintaining reliability through the transmitted essential information.
Solution Approach 2:
The patent applies preliminary action by transmitting the first part of the status report as soon as uplink resources are available, before the complete status report is ready. This preliminary transmission of essential information improves throughput and reduces latency while maintaining reliability, as the critical status information is conveyed even if the complete report is transmitted later.
Data Source
AI summary
A method of wireless communication by a user equipment (UE) includes receiving a configuration for a format type of a radio link control (RLC) status report. The method also includes determining a size of an uplink grant, and determining a portion of the uplink grant allocated for the RLC status report based on the size of the uplink grant and the configuration for the format type. The method further includes building the RLC status report based on the configuration for the format type and the portion of the uplink grant allocated for the status report. The method still further includes transmitting the RLC status report.