AMF-Controlled RAN Fallback for Multimedia Priority Services
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Solution Overview
Problem
Current telecommunication networks face challenges in ensuring priority subscribers can communicate effectively during network congestion, particularly during transitions from 4G to 5G or 5G to 6G, leading to resource consumption and failed connections for multimedia priority services.
Innovation Solution
Implementing an Access and Mobility Management Function (AMF) that provides Radio Access Network (RAN) fallback for multimedia priority services by setting custom access indication parameters for user devices, prioritizing priority subscribers and directing them to appropriate networks to ensure seamless service access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If networks transition from 4G to 5G or 5G to 6G, then network capacity and speed are improved, but multimedia priority services fail during congestion because EPS fallback mechanism is not prioritized
Solution Approach 1:
The AMF performs preliminary actions by pre-configuring MPS access indication parameters and establishing prioritized bearers before congestion occurs. When a priority subscriber needs to access MPS services, the AMF has already prepared the necessary signaling parameters and can immediately establish a prioritized bearer without needing to fall back to non-prioritized EPS mechanisms, thus maintaining reliability during network transitions and congestion events.
2Reliability
If user devices place repeated priority calls to ensure connection, then connection reliability is improved, but computing and networking resources are consumed
Solution Approach 1:
The AMF provides self-service functionality by automatically managing MPS access for priority subscribers through pre-configured parameters and prioritized bearers. Instead of requiring user devices to repeatedly attempt connections and consume resources, the AMF autonomously handles the registration, parameter determination, and bearer establishment processes, eliminating the need for repeated call attempts while maintaining high connection reliability.
3Loss of energy
If AMF provides RAN fallback for MPS, then resource consumption is reduced, but network device complexity increases
Solution Approach 1:
The AMF implements multi-functionality by handling both traditional 5G services and MPS services through a unified architecture. The AMF determines MPS access indication parameters, establishes prioritized bearers, and manages fallback procedures all within the same functional framework. This universal approach allows the AMF to serve multiple purposes without requiring separate dedicated systems, thereby managing complexity while reducing overall resource consumption.
Data Source
AI summary
A network device may receive, from a first radio access network (RAN), a first registration request associated with a first user device, and may determine, for the first registration request, first multimedia priority service (MPS) access indication parameters that are set to true for provision of MPSs to the first user device. The network device may generate a first registration accept message that includes the first MPS access indication parameters, and may provide the first registration accept message, with the first MPS access indication parameters, to the first user device to enable the first user device to utilize one of the MPSs on the first RAN.