S-CSCF Registration Backup Data Processing via Conditional Signaling
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Solution Overview
Problem
The existing methods for processing registration backup data in IMS networks result in unnecessary signaling load and resource waste due to the requirement of exchanging SAR/SAA signaling twice between the HSS and S-CSCF, especially in multi-registration scenarios, leading to increased signaling interactions and data processing for both UE and S-CSCF that do not support multi-registration.
Innovation Solution
The method involves determining whether a registration request carries multi-registration information and accordingly sending an SAR message to the HSS with multi-registration indication, allowing the HSS to process stored registration backup data accordingly, thereby avoiding unnecessary signaling interactions and reducing resource usage by optimizing the processing of registration backup data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the HSS and S-CSCF exchange SAR/SAA signaling twice to process registration backup data, then the registration backup data can be processed completely, but the signaling load and resource consumption increase
Solution Approach 1:
The patent applies preliminary action by checking whether the S-CSCF has already obtained registration backup data from the HSS before initiating the second SAR/SAA signaling exchange. The S-CSCF determines in advance whether the registration backup data acquisition is successful, and only performs the second signaling exchange when necessary, thereby avoiding redundant signaling interactions while ensuring complete processing of registration backup data
2Reliability
If the system performs SAR/SAA signaling exchange twice for all registration scenarios, then registration backup data is ensured to be processed, but unnecessary signaling load is generated for single-registration scenarios
Solution Approach 1:
The patent applies partial action by implementing conditional execution of the second SAR/SAA signaling exchange. The system performs the second signaling exchange only when the first acquisition of registration backup data fails or is incomplete, rather than executing it unconditionally for all registration scenarios. This selective approach reduces unnecessary signaling resource consumption while maintaining registration backup data availability when needed
Solution Approach 2:
The patent implements feedback mechanisms where the S-CSCF monitors the success of registration backup data acquisition from the HSS. Based on this feedback information, the system dynamically determines whether to initiate the second SAR/SAA signaling exchange, thereby optimizing signaling resource usage according to actual system state while ensuring registration backup data availability
3Reliability
If multi-registration indication is always sent in SAR message, then the HSS can process registration backup data correctly for multi-registration, but the signaling message size and processing complexity increase
Solution Approach 1:
The patent applies local quality by making the multi-registration indication in the SAR message conditional rather than universal. The indication is included only when the system determines that multi-registration is actually being used, allowing the HSS to process registration backup data correctly for multi-registration scenarios while avoiding unnecessary data volume increase in single-registration scenarios where the indication is omitted
Data Source
AI summary
A method, an apparatus, and a system for processing registration backup data are provided. The method includes: a Serving Call Session Control Function (S-CSCF) receives a request from a User Equipment (UE) and judges whether the request carries multi-registration information so as to decide whether to add multi-registration indication information into a Server Assignment Request (SAR) message sent to a Home Subscriber Server (HSS), which then performs operations according to whether the SAR message carries the multi-registration indication information. According to the application, unnecessary signaling interactions and unnecessary data processing between the HSS and the S-CSCF can be avoided, thereby reducing the signaling load, and saving system resources.