Dynamic BSR Format Selection for Uplink Resource Optimization
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Solution Overview
Problem
Current communication systems face challenges in efficiently reporting Buffer Status Reports (BSRs) across various logical channel groups (LCGs) due to limitations in existing BSR formats, which affect resource utilization and data transmission efficiency.
Innovation Solution
A method and device that determine a target BSR format based on the number of LCGs and the size of the uplink grant resource, allowing for flexible reporting by selecting between short, truncated, and flexible long BSR formats to optimize resource usage and prioritize high-priority channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed BSR format is used for all LCG reporting scenarios, then the system structure is simple, but resource utilization is inefficient
Solution Approach 1:
The patent implements dynamic BSR format selection by determining the appropriate BSR format (short, truncated, or flexible long) based on the number of LCGs with data and available uplink resources. This dynamic adaptation allows the system to optimize resource utilization while maintaining manageable complexity through standardized selection criteria.
Solution Approach 2:
The patent changes the parameter of BSR format type based on reporting conditions. When the number of LCGs with data falls within specific ranges and uplink resources are sufficient, the system selects different BSR formats (short BSR for 1 LCG, truncated BSR for limited LCGs, flexible long BSR for up to 8 LCGs), thereby optimizing resource usage without requiring a completely complex system redesign.
2Productivity
If multiple BSR formats are supported to improve resource utilization, then resource utilization improves, but the determination complexity increases
Solution Approach 1:
The patent manages determination complexity by establishing clear parameter-based selection criteria. The terminal device determines the BSR format based on two main parameters: the number of LCGs with data to report and the available uplink grant resources. This systematic approach to parameter evaluation simplifies the decision process despite supporting multiple BSR formats.
Solution Approach 2:
The patent applies different BSR formats to different local conditions (number of LCGs and resource availability). Each BSR format is optimized for specific scenarios: short BSR for single LCG reporting, truncated BSR for limited resource scenarios, and flexible long BSR for comprehensive multi-LCG reporting. This localized optimization reduces overall system complexity by matching format to condition.
3Loss of information
If comprehensive LCG reporting is implemented, then reporting completeness improves, but transmission overhead increases
Solution Approach 1:
The patent segments LCG reporting into different formats based on the number of LCGs with data. When fewer LCGs have data, shorter BSR formats are used, reducing transmission overhead. When more LCGs need reporting, the flexible long BSR format accommodates up to 8 LCGs comprehensively. This segmentation ensures reporting completeness is achieved only when necessary, optimizing the balance between completeness and overhead.
Solution Approach 2:
The patent implements partial reporting when resources are limited or fewer LCGs have data, using short or truncated BSR formats that report only necessary LCGs. This partial action approach reduces transmission overhead while maintaining essential reporting functionality, reserving comprehensive reporting (excessive action) for scenarios where resources and completeness requirements demand it.
Data Source
AI summary
Embodiments of this application provide an information transmission method and device, to report a BSR of an LCG. The method includes: determining, by a terminal device, a target BSR format in at least three BSR formats according to a first LCG set that is in a plurality of LCGs and that has to-be-transmitted data, wherein the first LCG set includes at least one LCG; and reporting, by the terminal device, BSRs of some or all LCGs in the first LCG set by using the target BSR format.