ACB Detection Shielding Uplink Data Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The New Radio (NR) system lacks a mechanism to effectively control data upload, particularly in scenarios where the amount of data to be uploaded is below a threshold, leading to incomplete control over data transmission paths and no shielding mechanism for upload processes.
Innovation Solution
The implementation of Access Class Barring (ACB) detection, which performs ACB detection on multiple cell groups associated with a PDCP entity and shields data transmission to barred cell groups, improving the control mechanism by canceling data transmission to barred cell groups and utilizing ACB timers to reduce resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ACB detection is performed on multiple cell groups and transmission is shielded to barred cell groups, then control over uplink data transmission is improved and congestion is mitigated, but device complexity increases due to additional detection mechanisms
Solution Approach 1:
The patent performs ACB detection before data transmission to determine whether cell groups are barred, allowing the system to proactively prevent transmission to barred cell groups. This preliminary detection mechanism improves transmission control reliability by avoiding unnecessary transmission attempts while the complexity is managed through efficient detection algorithms.
Solution Approach 2:
The patent introduces an ACB detection mechanism as an intermediary layer between the data transmission source and the cell groups. This intermediary performs bar checking and shields transmission to barred cell groups, improving overall transmission control while managing complexity through a dedicated detection module that operates independently from the main transmission pipeline.
2Reliability
If ACB detection and shielding mechanisms are implemented, then data transmission control is enhanced, but resource consumption increases due to additional detection and timer operations
Solution Approach 1:
The patent implements ACB timers that periodically check and manage the barred status of cell groups. Instead of continuous monitoring, the timers provide periodic detection and control actions, which maintains reliable transmission control while significantly reducing resource consumption compared to continuous monitoring approaches.
Solution Approach 2:
The ACB detection mechanism serves itself by maintaining internal timers and bar status information, reducing the need for external control signals and continuous network coordination. This self-service approach enhances transmission control reliability while minimizing additional resource consumption by utilizing local processing and stored information.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a data transmission control method and apparatus. The method comprises: when new data needs to be transmitted on an existing session, performing an access level prohibition detection on for each cell group in a plurality of cell groups associated with a PDCP entity; and when a result of the access level prohibition detection exists as a blocked cell group, shielding the transmission of the new data to the cell group.