IMS Session Establishment via Radio Access Technology Feedback
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Solution Overview
Problem
Current EPS fallback configurations in wireless communication networks are not optimized for optimal performance, leading to potential issues in establishing and maintaining IP multimedia subsystem sessions, particularly in scenarios involving radio access technology changes.
Innovation Solution
The method involves receiving a session initiation protocol message from a user device, transmitting an IP address and application identifier to a network entity, and receiving the status of the user device's radio access technology, enabling efficient establishment and fallback of IP multimedia subsystem sessions across different radio access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If EPS fallback is configured in wireless communication networks, then IP multimedia subsystem sessions can be established across different radio access technologies, but the session establishment and maintenance performance is not optimized
Solution Approach 1:
The network entity receives feedback information about the user device's radio access technology status from a third network entity. This feedback mechanism enables the system to adapt session management decisions based on current radio access conditions, thereby optimizing session establishment and maintenance performance across different radio access technologies while resolving the contradiction between versatility and reliability.
2Adaptability or versatility
If radio access technology changes occur during IP multimedia subsystem sessions, then network flexibility is improved, but session stability and performance deteriorate
Solution Approach 1:
The system performs preliminary actions by obtaining radio access technology status information before session establishment or modification. By proactively acquiring feedback about the user device's radio access technology state, the network entity can prepare appropriate session management decisions in advance, ensuring session stability even when radio access technology changes occur, thus resolving the contradiction between flexibility and stability.
3Ease of manufacture
If traditional EPS fallback methods are used, then implementation simplicity is maintained, but session establishment efficiency and performance are suboptimal
Solution Approach 1:
The network entity obtains radio access technology status information in advance before initiating session establishment procedures. This preliminary action enables more efficient and targeted session management, improving session establishment efficiency without significantly complicating the implementation, as the additional feedback mechanism integrates seamlessly with existing EPS fallback procedures.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for establishing an IP multimedia subsystem session. One method includes receiving, at a first network entity from a user device, a first session initiation protocol message comprising a session description protocol, wherein the first session initiation protocol message is used to establish an internet protocol multimedia subsystem session for an application. The method includes transmitting, from the first network entity to a second network entity, a first message comprising an internet protocol address and an identifier for the application. The method includes receiving, at the first network entity from the second network entity, a status of a radio access technology of the user device, wherein the status of the radio access technology of the user device is received by the second network entity from a third network entity.