P-CSCF RAT Tracking for Call Transition Debugging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing network architectures struggle with increased complexity in identifying and debugging issues due to multiple network standards and real-time transitions between Radio Access Technologies (RATs), leading to inefficiencies in call management and debugging.
Innovation Solution
Implementing a network architecture with a proxy call session control function (P-CSCF) that tracks and records RAT types and transitions during calls, using PCF-reported and UE-provided RAT information to enhance accuracy and reduce debugging complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple network standards are supported to enhance serviceable area, then network coverage and adaptability are improved, but system complexity and difficulty of identifying/debugging issues increase
Solution Approach 1:
The patent introduces a call session control function (CSCF) as an intermediary component that mediates between multiple network standards and the core network. This CSCF tracks and records RAT type information, serving as a mediator that manages the complexity of handling multiple standards (3G, 4G, 5G) while maintaining network coverage and adaptability.
Solution Approach 2:
The system implements feedback mechanisms where the CSCF receives RAT type information from policy control functions (PCF) and user equipment (UE), processes this information, and maintains accurate records of current and historical RAT types. This feedback loop enables the system to adapt to changing network conditions while maintaining traceability for debugging purposes.
2Productivity
If real-time switching between RAT types is enabled based on various factors, then call quality and network efficiency are improved, but difficulty of detecting and measuring issues increases
Solution Approach 1:
The system performs preliminary actions by having the CSCF proactively track and record RAT type information before issues occur. The CSCF maintains a historical record of RAT type transitions and current RAT states, so when debugging is needed, the information is already captured and organized, eliminating the need for complex real-time analysis during problem investigation.
Solution Approach 2:
The patent creates a copy of the RAT type information flow by having the CSCF maintain separate records of RAT type data received from both the PCF and the UE. This duplicated information storage allows for verification and cross-checking during debugging, making it easier to detect and measure issues without adding complexity to the real-time switching operation.
3Measurement precision
If tracking and recording of RAT types is implemented, then debugging precision and issue identification are improved, but device complexity increases
Solution Approach 1:
The CSCF is designed as a universal component that performs multiple functions: it manages call session control, tracks RAT type information, records historical data, and provides this information for debugging. By consolidating these functions in a single multi-functional component rather than adding separate tracking systems, the patent improves debugging precision without proportionally increasing overall system complexity.
Data Source
AI summary
A network may include a proxy-call session control function (P-CSCF) of a communication network that is configured to determine, record, and report on call types of calls originating from user equipment associated with the communication network. In some cases, the P-CSCF may determine the call type based on radio access technology types reported by the originating user equipment and/or by a proxy control function associated with the call.