Access Barring Check for QoS Flow Mapping in LTE 5G
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Solution Overview
Problem
In LTE and 5G communication systems, access control mechanisms can be bypassed, leading to network congestion when applications are mapped to existing Quality of Service (QoS) flows, causing unintended UL transmissions and exacerbating congestion.
Innovation Solution
A communication device performs an access barring check for any access attempt by obtaining an access category and using access barring parameters to ensure that all access attempts undergo a thorough access control process, preventing bypass and maintaining network stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If applications are mapped to existing QoS flows to improve service delivery, then service efficiency is improved, but access control is bypassed causing network congestion
Solution Approach 1:
The patent applies preliminary action by performing access barring checks before allowing applications to use existing QoS flows. The communication device checks whether an application is allowed to access the network through existing QoS flows prior to establishing the mapping, preventing bypass of access control while maintaining service efficiency.
Solution Approach 2:
The patent introduces an intermediary mechanism by adding a new access control check specifically for applications mapped to existing QoS flows. This intermediary check acts as a mediator between the application layer and the network layer, ensuring that even though applications use existing flows for efficient service delivery, they still undergo appropriate access control verification.
2Reliability
If access control is applied to all applications to prevent congestion, then network stability is improved, but service delivery efficiency decreases
Solution Approach 1:
The patent applies local quality by implementing differentiated access control treatment for different applications. Instead of uniformly applying access control to all applications, the patent specifically targets applications mapped to existing QoS flows with a dedicated access barring check, while allowing other applications to proceed normally through existing mechanisms, thus maintaining network stability without broadly reducing service efficiency.
Solution Approach 2:
The patent changes the access control parameters by introducing application-specific access barring checks for applications mapped to existing QoS flows. The access control mechanism dynamically adjusts its behavior based on the application type and QoS flow mapping status, applying stricter controls where needed while maintaining efficiency elsewhere.
Data Source
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AI summary
A communication device for performing an access control comprises at least one storage device and at least one processing circuit coupled to the at least one storage device. The at least one storage device stores, and the at least one processing circuit is configured to execute instructions of: detecting an access attempt; obtaining an access category corresponding to the access attempt; and performing an access barring check corresponding to the access attempt according to the access category and at least one access barring parameter.