UE Buffer Status Reporting for Urgent Uplink Scheduling
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Solution Overview
Problem
Existing communication systems fail to promptly schedule uplink data with urgent scheduling requirements, particularly in Extended Reality (XR) services, leading to joint decoding failures due to delayed data flows.
Innovation Solution
A method for reporting a buffer status report (BSR) is implemented by user equipment (UE) to send BSR for uplink data with urgent scheduling needs, regardless of logical channel priority, using statistical analysis and priority setting based on remaining data packet delay budget and network indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If BSR reporting follows traditional logical channel priority rules, then system complexity is reduced and operation is simplified, but uplink data with urgent scheduling requirements cannot be promptly scheduled leading to joint decoding failures
Solution Approach 1:
The patent changes the parameter of BSR reporting priority from being based on logical channel priority to being based on remaining data packet delay budget thresholds. When the remaining delay budget falls below a threshold, the UE triggers BSR reporting with higher priority, ensuring urgent data is scheduled promptly while maintaining a clear parameter-based decision rule that does not significantly increase complexity
Solution Approach 2:
The patent applies preliminary action by having the UE proactively monitor the remaining data packet delay budget and trigger BSR reporting before the deadline is reached. This advance notification allows the network to schedule uplink data in time, preventing joint decoding failures while maintaining systematic control over the reporting process
2Loss of time
If BSR reporting is triggered for all uplink data regardless of priority, then scheduling timeliness is improved, but signaling overhead and network load increase
Solution Approach 1:
The patent introduces a threshold parameter for the remaining data packet delay budget that determines when BSR reporting should be triggered. By comparing the remaining delay budget against this threshold, the system selectively triggers BSR reporting only when necessary, reducing unnecessary signaling overhead while ensuring timely scheduling for urgent data
Solution Approach 2:
The patent applies local quality by differentiating BSR reporting behavior based on the specific condition of remaining delay budget. Instead of uniform reporting for all data, the system applies targeted reporting only when the remaining delay budget falls below the threshold, optimizing the balance between scheduling timeliness and signaling overhead for different data scenarios
Data Source
AI summary
A method for reporting a buffer status report (BSR) is performed by a user equipment (UE), and includes: reporting the BSR for uplink data with an urgent scheduling requirement.