LTE-A Buffer Status Reporting Format Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing LTE system's buffer status reporting (BSR) table is inadequate for accurately reflecting buffer status in LTE-Advanced systems with high throughput, as it can only distinguish data amounts up to 150,000, leading to inefficient radio resource allocation for services exceeding this threshold.
Innovation Solution
Introducing a newly-added buffer status level format with higher data-amount-range boundary values and additional data amount levels to improve granularity, allowing UE to select between original and new formats based on buffer data amounts, and enabling eNB to determine the appropriate format for accurate reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the original buffer status level format is used, then the reporting format is simple and compatible with legacy systems, but the measurement precision of buffer status is insufficient for high-throughput services
Solution Approach 1:
The buffer status reporting is segmented into multiple formats: the original format for small data amounts and a newly-added format for large data amounts. This segmentation allows the system to use appropriate granularity levels for different service requirements, improving measurement precision for high-throughput services while maintaining simplicity for low-data scenarios.
Solution Approach 2:
The patent changes the parameters of the buffer status level format by introducing a newly-added format with higher data-amount-range boundary values and more data amount levels. This parameter change enables precise reporting for large buffer sizes while the system can switch between formats based on actual data amounts.
2Measurement precision
If the buffer status reporting granularity is increased for high throughput services, then the radio resource allocation accuracy improves, but the signaling overhead and system complexity increase
Solution Approach 1:
The system dynamically selects between the original buffer status level format and the newly-added format based on the actual data amount in the buffer. This dynamic adaptation allows the system to use fine-grained reporting only when necessary (for large data amounts), reducing signaling overhead for normal operations while maintaining high allocation accuracy when needed.
Solution Approach 2:
Different reporting granularities are applied locally based on the service type and data amount. High-granularity reporting is applied only to high-throughput services with large buffer sizes, while low-granularity reporting is used for other services, optimizing the balance between allocation accuracy and signaling overhead.
Data Source
Figure 1~4
Figure 5~7
Figure 8
AI summary
The present invention discloses a method for realizing buffer status reporting. The method includes the following steps: a user equipment reporting a buffer status of a logical channel by using one of an original buffer status level format and a newly-added buffer status level format; wherein, the newly-added buffer status level format comprises a plurality of data-amount-range boundary values which are higher than a maximum data-amount-range boundary value in the original buffer status level format. The present invention also discloses a system and user equipment for realizing buffer status reporting. With the invention, the accuracy of the buffer status reported by the user in a long term evolution-advanced (LTE-A) system can be improved.