RAN Node Exception Report Indication for Core Network Prioritization
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Solution Overview
Problem
Existing radio access network technologies lack a mechanism to ensure responsible use of exception reports, leading to potential misuse of high-priority code points, which can result in delayed network services for both normal and prioritized traffic.
Innovation Solution
A radio access network node and core network node system that receives and transmits indications of exception reports from mobile stations, allowing the core network to prioritize resource allocation and charging, using modifications to existing protocols such as UL-UNITDATA PDUs and S1AP messages to differentiate between normal and high-priority traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If exception reports are allowed to use high-priority code points without verification, then prioritized traffic can be transmitted with high priority, but normal traffic may be delayed due to misuse of exception reports
Solution Approach 1:
The RAN node receives feedback from the core network node regarding whether the mobile station is authorized to use exception reports. This feedback mechanism allows the system to verify the legitimacy of high-priority traffic before granting priority treatment, preventing misuse while maintaining proper prioritization for authorized exception reports
Solution Approach 2:
The RAN node acts as an intermediary between the mobile station and the core network node. It verifies authorization by communicating with the core network node before allowing the mobile station to use high-priority code points for exception reports, thus preventing unauthorized misuse while enabling legitimate prioritized transmission
2Reliability
If a mechanism to verify exception report usage is implemented, then misuse can be prevented, but network complexity increases
Solution Approach 1:
The verification mechanism utilizes existing network signaling protocols and message structures that are already part of the radio access network architecture. By reusing existing communication channels and message formats between the RAN node and core network node, the solution prevents misuse of exception reports without requiring entirely new network infrastructure or complex additional systems
Data Source
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AI summary
A radio access network node (e.g., Base Station Subsystem, Evolved Node B) and method are described herein for indicating to a core network node (e.g., Serving GPRS Support Node, Mobility Management Entity, CIoT Serving Gateway Node) usage of exception reports by a mobile station. In addition, a core network node (e.g., Serving GPRS Support Node, Mobility Management Entity, CIoT Serving Gateway Node) and method are described herein for receiving an indication of usage of exception reports by a mobile station.