Dynamic Interface Session Discovery for VoLTE Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication networks face VoLTE and ViLTE call outages due to node leakage and misconfiguration, particularly when P-CSCF nodes are communicatively coupled with PCRF nodes across different regions, leading to failed authentication and authorization processes.
Innovation Solution
Implementing a technique to discover and establish Gx interface sessions dynamically across regions by using a newly defined S9 interface, allowing PCRF nodes to search for and establish connections between PGW and PCRF nodes, ensuring proper IMS registration and call setup for VoLTE and ViLTE services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If P-CSCF nodes are communicatively coupled with PCRF nodes across different regions, then network flexibility and adaptability are improved, but call reliability and service stability deteriorate due to authentication failures
Solution Approach 1:
The patent introduces an S9 interface as an intermediary mechanism between PCRF nodes in different regions. This interface enables indirect communication and coordination when direct Gx interface sessions are unavailable, allowing the network to maintain flexibility in node coupling while ensuring call reliability through alternative authentication paths via the S9 interface between PCRF nodes.
2Adaptability or versatility
If nodes are dynamically coupled across regions, then network adaptability is improved, but interface session management complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where PCRF nodes exchange session status and authentication information through the S9 interface. This feedback loop enables automatic detection of Gx interface session availability and dynamic routing of authentication requests, reducing the complexity of interface session management while maintaining high network adaptability across regions.
3Manufacturing precision
If manual intervention is required to fix node coupling issues, then configuration precision is maintained, but service productivity and response time deteriorate
Solution Approach 1:
The patent enables self-service functionality where the S9 interface automatically detects authentication failures and initiates corrective actions without manual intervention. The system can dynamically establish alternative Gx interface sessions or reroute calls through different PCRF nodes, maintaining configuration precision while significantly improving service productivity and reducing outage duration.
Data Source
AI summary
A method for discovering an interface session within a wireless communication network is discussed herein. The method includes establishing an Internet Protocol (IP) packet-switched network registration between a first node of a plurality of nodes within the wireless communication network and a second node of the plurality of nodes. The method further includes, requesting, by a third node of the plurality of nodes from a fourth node of the plurality of nodes, service for a call of a mobile device within the wireless communication network. Based upon not having an appropriate interface session established between the first node and the fourth node, the method also includes performing, by the fourth node, an interface session discovery. Based at least in part on the interface session discovery, a dedicated bearer is established at the second node for the call.