Buffer Status Reporting for XR Services in 5G
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Solution Overview
Problem
The challenge of supporting Extended Reality (XR) services in mobile communication systems, particularly in 5G networks, is exacerbated by the need for efficient buffer status reporting to manage the high data bursts generated by XR devices.
Innovation Solution
The method involves a terminal receiving an RRC message that triggers a buffer status report (BSR), determining the buffer size to be reported using a specific buffer size table based on the number of logical channel groups and whether an additional buffer size table is allowed, and then transmitting the BSR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional buffer status reporting is used in 5G networks, then basic uplink scheduling is maintained, but efficient management of high data bursts from XR devices cannot be achieved
Solution Approach 1:
The patent segments the buffer status reporting by introducing separate buffer size tables for different service types (e.g., XR services versus traditional services). This allows the system to differentiate and manage data bursts from XR devices separately from other traffic, enabling more efficient resource allocation without overwhelming the reporting mechanism with undifferentiated data.
Solution Approach 2:
The patent applies local quality by configuring different buffer size tables for different logical channel groups or service types within the same terminal. This means that while the overall BSR mechanism remains standardized, specific portions of the buffer status reporting are customized with appropriate buffer size thresholds and formats tailored to specific service requirements, particularly XR services with their distinctive burst patterns.
2Measurement precision
If multiple buffer size tables are configured for different service types, then accurate buffer status reporting for XR services is achieved, but terminal processing complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple buffer size tables with service-specific thresholds and parameters before actual data transmission begins. The network side provides these configured tables to the terminal in advance through RRC signaling, so that when XR data bursts occur, the terminal can immediately apply the appropriate pre-configured table without performing complex real-time calculations or decisions about which table to use.
3Productivity
If buffer status reports are transmitted frequently to manage XR data bursts, then uplink scheduling efficiency is improved, but power consumption increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting buffer size thresholds and reporting triggers based on the service type and current network conditions. For XR services, the system configures appropriate buffer size tables that set optimal thresholds for triggering BSR transmissions. This allows the terminal to report buffer status at appropriate intervals rather than continuously, reducing power consumption while maintaining efficient scheduling for high-data-rate XR services.
Data Source
AI summary
A method and apparatus to improve uplink scheduling efficiency is provided. This disclosure provides methods and apparatus to selecting buffer size table for a triggered BSR with consideration on RRC configuration and amount of data to be reported and number of logical channel groups to be reported. With the method, more accurate reporting is enabled when certain conditions are fulfilled.