LTE Access Barring for Special Class Priority
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Solution Overview
Problem
In the LTE network, the access barring mechanism fails to maintain the original preferential handling of special type access classes over normal type access classes, leading to a loss of purpose and potential resource shortages due to uniform barring rates across both types.
Innovation Solution
A method where mobile devices receive notification information with first and second barring information, allowing special type access classes to always have access allowed and normal type access classes to be denied based on a generated numerical value, ensuring preferential handling of special type access classes regardless of network operations or malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform access barring rates are applied to both special type and normal type access classes in LTE network, then the access barring mechanism is simplified, but the preferential handling of special type access classes is lost
Solution Approach 1:
The patent applies local quality by differentiating the access barring behavior between special type access classes (AC 11-15) and normal type access classes (AC 0-10). Special type access classes are granted preferential treatment with different barring evaluation logic, while normal type access classes follow the standard random number comparison method. This localized differentiation ensures that emergency services and other special categories maintain reliable access during network congestion without requiring complete redesign of the access barring mechanism.
2Productivity
If access barring is applied uniformly to all access classes, then the network congestion control is improved, but the fairness of communication service for special type access classes deteriorates
Solution Approach 1:
The patent segments the access classes into two distinct categories: special type access classes (AC 11-15) and normal type access classes (AC 0-10). This segmentation allows the network to apply different access barring strategies to each group. Normal type access classes are subject to standard random number comparison-based barring to control congestion, while special type access classes are evaluated separately to ensure they maintain access rights during congestion events, thereby preserving service fairness.
3Device complexity
If the same barring evaluation method is used for all access classes, then the access control process is simplified, but the priority handling of special type access classes is compromised
Solution Approach 1:
The patent introduces dynamic access control by making the barring evaluation method adaptive based on the access class type. The mobile device dynamically selects the appropriate evaluation method: for special type access classes, it uses preferential evaluation logic that ensures access permission; for normal type access classes, it uses the standard random number comparison method. This dynamic adaptation maintains operational simplicity while accurately implementing priority handling requirements.
Data Source
AI summary
When a network is in a state of requiring some sort of access barring, a reference value notified to a mobile device is determined to indicate a value in which an access of a certain mobile device is denied while an access of another mobile device is allowed. When an own device has a special type access class, it is determined that an access is allowed The appropriateness of an access is determined according to designation from the network when the own device has the special type access class, and when the own device does not have the special type access class, it is determined that an access is denied.