PFCP Response Message Multiple Failed Rule ID Reporting
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Solution Overview
Problem
Current PFCP response messages can only report a single 'Failed Rule ID' even when multiple rules fail during configuration, leading to incomplete information being passed from the User Plane to the Control Plane, which affects charging and network operations.
Innovation Solution
Extending the PFCP Session Establishment/Modification Response messages to support multiple instances of the 'Failed Rule ID' IE, allowing the User Plane to report multiple failed rule IDs, thereby providing the Control Plane with a complete picture of failed rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the PFCP response message structure is extended to support multiple Failed Rule ID instances, then the completeness of failure information reporting is improved, but the message complexity increases
Solution Approach 1:
The patent applies segmentation by allowing multiple instances of the Failed Rule ID information element within a single PFCP response message. Each failed rule is reported as a separate instance, enabling the Control Plane to receive complete failure information for all rules that failed during configuration, rather than losing information about partially failed configurations.
2Loss of time
If multiple Failed Rule ID instances are reported in a single message, then the number of communication rounds is reduced, but the processing complexity at the User Plane increases
Solution Approach 1:
The patent merges multiple failure reports into a single PFCP response message by including multiple Failed Rule ID instances. This combining approach reduces the number of communication rounds between User Plane and Control Plane, eliminating the need for multiple separate messages or follow-up queries to obtain complete failure information.
Solution Approach 2:
The User Plane performs preliminary processing by collecting and preparing all failed rule identifiers before sending the PFCP response message. This preliminary action ensures that the Control Plane receives complete failure information in one message, avoiding the need for additional communication rounds to retrieve missing failure data.
3Productivity
If multiple rules are configured in a single PFCP request, then the configuration efficiency is improved, but the difficulty of detecting and measuring failures increases
Solution Approach 1:
The patent implements feedback by reporting the specific identifiers of failed rules back to the Control Plane through the Failed Rule ID information element. This feedback mechanism enables the Control Plane to identify exactly which rules failed during configuration, allowing for precise error detection and measurement even when multiple rules are configured simultaneously in a single PFCP request.
Data Source
AI summary
A method, computer readable media and a system are disclosed to identify a mechanism to be able to supply multiple “Failed Rule ID” in a single PFCP response message from User Plane (UP) to Control Plane (CP) via the Sx interface for 4G and via the N4 interface for 5G. In one embodiment, a method for operating a wireless network device including a User Plane (UP) and a Control Plane (CP) in communication with the UP, includes configuring, by the CP, multiple rules in the UP; identifying, by the UP, multiple failed rule Identifiers (IDs); supplying, in a single Packet Forwarding Control Protocol (PFCP) response message from the UP to a CP, the multiple failed rule IDs; and determining, by the CP, further action to be taken based on the failed rules.