PGW Routing Charging Messages by Subscriber Policy
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Solution Overview
Problem
In the telecommunications industry, service providers face challenges in accurately charging subscribers for network service use due to the current practice of routing charge information to the same group of Charging Data Functions (CDFs) regardless of the transaction arrangement, leading to inefficiencies and errors.
Innovation Solution
Implementing a system where the Packet Data Network (PDN) gateway (PGW) transmits charging messages to different CDF groups based on subscriber profile information and specific rules, allowing for intelligent routing of charge information to the appropriate destination CDFs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If charge information is routed to the same group of CDFs for all subscribers, then device complexity is reduced and ease of operation is improved, but transaction accuracy deteriorates and errors increase
Solution Approach 1:
The patent applies local quality by routing charge information to different CDF groups based on specific subscriber characteristics and transaction types. Instead of uniform routing, the system selectively directs charging messages to appropriate CDF groups according to subscriber profile information, service indicators, and transaction arrangements, thereby improving transaction accuracy without significantly increasing overall system complexity.
Solution Approach 2:
The patent changes the routing parameter from a fixed destination to a dynamic selection based on subscriber profile information, service indicators, and transaction types. The PGW evaluates multiple parameters (subscriber ID, service indicator, CDF group identifier) to determine the appropriate routing destination, allowing the system to adapt routing decisions to specific charging scenarios and improve accuracy.
2Reliability
If intelligent routing based on subscriber profile information is implemented, then transaction accuracy is improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring subscriber profile information, service indicators, and CDF group identifiers in the HSS/AAA and PCRF before charging transactions occur. The PGW retrieves these pre-established routing parameters during normal operation, avoiding complex real-time calculations and reducing processing requirements while maintaining high routing accuracy.
Solution Approach 2:
The patent introduces intermediary components (HSS/AAA and PCRF) that manage subscriber profile information and routing decisions. These intermediaries handle the complexity of routing logic centrally, allowing the PGW to make routing decisions based on pre-configured rules rather than implementing complex routing algorithms locally, thereby distributing system complexity to specialized components.
3Measurement precision
If charge information is routed to multiple different CDF groups, then charging accuracy for different transaction arrangements is improved, but loss of time due to routing decisions increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring routing rules, subscriber profiles, and CDF group mappings before charging transactions occur. The HSS/AAA and PCRF establish routing parameters in advance, allowing the PGW to make rapid routing decisions by simple lookup rather than complex evaluation during actual charging operations, thereby minimizing routing decision time while maintaining accuracy.
Data Source
AI summary
A device may determine a subscriber identifier associated with a subscriber device. The device may obtain a service indicator based on the subscriber identifier. The service indicator may identify a network service to which a subscriber, associated with the subscriber identifier, is subscribed. The device may obtain a charging data function (CDF) identifier based on the service indicator. The CDF identifier may identify a destination CDF for charging messages associated with the network service. The device may establish a communication session associated with the subscriber device and the network service. The device may transmit one or more charging messages, associated with the communication session, to the destination CDF identified by the CDF identifier.