Shared 5G Terminal Access Using VoNR Capability Redirection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In a shared 5G network environment, terminals lacking VoNR capability cannot switch to a compatible 4G network due to the absence of an N26 interface, leading to voice service interruptions.
Innovation Solution
A terminal access method that involves a core network element acquiring terminal radio capability information through a base station to determine if a terminal supports voice services, and if not, directs the terminal to a network that supports voice services, ensuring seamless service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal without VoNR capability accesses a shared 5G network, then the terminal can access the network, but the voice service cannot be executed due to lack of N26 interface for cross-system switching
Solution Approach 1:
The core network element performs preliminary actions by acquiring terminal radio capability information before the terminal accesses the network, and proactively provides redirection information to terminals that cannot support voice services in the 5G network. This prevents the service failure that would occur later when cross-system switching is needed but the N26 interface is unavailable.
Solution Approach 2:
The core network element acts as an intermediary between the 5G network and independent 4G networks of different operators. By providing redirection information, it enables terminals to switch to appropriate 4G networks for voice services without requiring a direct N26 interface connection.
2Productivity
If multiple operators share the 5G network infrastructure, then network resource utilization improves, but cross-system switching between shared 5G core network and independent 4G networks cannot be supported
Solution Approach 1:
The solution segments the network access process by separating 5G data service access from voice service access. Terminals can access the shared 5G network for data services, while voice service terminals are redirected to independent 4G networks of their subscribed operators, allowing both shared infrastructure utilization and operator-specific voice service support.
Solution Approach 2:
The core network element changes the network selection parameter for terminals based on their voice service capability. For terminals without VoNR capability, the network provides redirection information pointing to 4G networks, effectively changing the operational mode from pure 5G access to hybrid 5G-4G access for voice services.
3Reliability
If the base station configures VoNR service for terminals, then voice service quality improves, but terminals without VoNR capability cannot complete the call
Solution Approach 1:
The core network element performs preliminary capability verification by acquiring terminal radio capability information before the terminal accesses the network. This allows the network to identify terminals without VoNR capability in advance and provide appropriate redirection information, preventing service failure that would occur if VoNR configuration were attempted later.
Data Source
AI summary
Disclosed are a terminal access method in a shared network, a device, a base station and a storage medium. The terminal access method in the shared network includes that: a first network element acquires a registration request message of a second network element; the first network element sends a terminal radio capability request message to a third network element; the first network element receives terminal radio capability information of the second network element sent by the third network element; and the first network element sends a registration response message to the second network element when it is determined according to the terminal radio capability information of the second network element that the second network element does not support a voice service in a network to which the first network element belongs.