UL and Sidelink BSR Priority for Resource Conflict Resolution
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Solution Overview
Problem
Existing solutions fail to efficiently manage the transmission of uplink and sidelink data when a terminal simultaneously triggers both uplink and sidelink buffer status reports (BSRs), leading to delays in data transmission.
Innovation Solution
A method is introduced to determine the priority of uplink and sidelink BSRs based on the actual priorities of the corresponding services, allowing high-priority data to be transmitted preferentially, and truncating or delaying lower-priority BSRs to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device sends both UL BSR and SL BSR simultaneously, then the buffer status information is reported, but the transmission efficiency of uplink and sidelink data is reduced due to resource conflicts and delays
Solution Approach 1:
The patent changes the priority parameter of BSR reports dynamically based on service types and data urgency. By assigning different priority levels to UL BSR and SL BSR depending on the specific service requirements and buffer status, the system resolves resource conflicts while ensuring critical data transmissions are not delayed, thus improving overall transmission efficiency without compromising reporting accuracy
2Productivity
If the terminal device prioritizes UL BSR transmission, then uplink data transmission is improved, but sidelink data transmission is delayed
Solution Approach 1:
The patent implements dynamic priority adjustment where the terminal device continuously monitors service types, data buffer status, and transmission requirements to flexibly determine whether UL BSR or SL BSR should be prioritized. This dynamic approach allows the system to adapt to changing conditions, ensuring that when sidelink data is urgent, its BSR report receives higher priority, thereby reducing transmission delays while maintaining uplink efficiency
3Productivity
If the terminal device prioritizes SL BSR transmission, then sidelink data transmission is improved, but uplink data transmission is delayed
Solution Approach 1:
The patent employs dynamic priority adjustment mechanisms that allow the terminal device to switch between prioritizing UL BSR and SL BSR based on real-time service requirements and data urgency. When uplink data becomes critical, the system dynamically elevates UL BSR priority, ensuring timely transmission while preventing persistent sidelink delays, thus resolving the trade-off between the two transmission directions
4Loss of information
If the terminal device sends detailed BSR reports for all services, then complete buffer status information is provided, but the signaling overhead and resource consumption increase
Solution Approach 1:
The patent extracts and reports only the most critical buffer status information based on service priority and data urgency. Instead of reporting detailed status for all services, the system identifies and reports only on high-priority services or those with urgent data, thereby maintaining essential information completeness while significantly reducing signaling overhead and energy consumption associated with transmitting comprehensive buffer status reports
Data Source
AI summary
This application provides a method for reporting a buffer status report and a communications apparatus. The method includes: obtaining, by a terminal device, a size of a first uplink resource; determining, by the terminal device based on the size of the first uplink resource, that a priority of an uplink buffer status report (UL BSR) is higher than a priority of an SL BSR, or that a priority of a sidelink buffer status report (SL BSR) is higher than a priority of a UL BSR.