5G NR VoLTE Fallback via Simultaneous Network Attachment
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Solution Overview
Problem
Current 5G NR networks do not support VoLTE voice calls, requiring user equipment to monitor and tune into 4G LTE networks for voice pages and maintenance, increasing device complexity and impacting battery life.
Innovation Solution
Modifying the 5G NR standard to allow simultaneous network attachment to both Next Generation Mobile and VoLTE networks, enabling VoLTE voice calls through signaling additions, allowing VoLTE voice calls to originate and terminate on 5G NR-connected user equipment without the need to monitor or tune into 4G LTE networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment monitors and tunes into 4G LTE networks for voice pages and maintenance on 5G NR networks, then VoLTE voice calls can be supported, but device complexity increases and battery life is impacted
Solution Approach 1:
The patent merges the network attachment by allowing the user equipment to simultaneously attach to both 5G NR network and VoLTE network through a single procedure. The network side coordinates both attachments, eliminating the need for separate monitoring and tuning operations while maintaining VoLTE voice call support.
Solution Approach 2:
The 5G NR network is enhanced to provide multi-functionality by supporting both 5G data services and VoLTE voice calls through a unified network attachment mechanism. This allows the user equipment to handle both data and voice services through a single network connection, reducing device complexity.
2Reliability
If user equipment monitors and tunes into 4G LTE networks for voice pages and maintenance on 5G NR networks, then VoLTE voice calls can be supported, but battery life is reduced
Solution Approach 1:
The patent merges the network attachment by allowing the user equipment to simultaneously attach to both 5G NR network and VoLTE network through a single procedure. The network side coordinates both attachments, eliminating the need for separate monitoring and tuning operations while maintaining VoLTE voice call support.
Solution Approach 2:
The network maintains continuous connection for both 5G data and VoLTE voice services through coordinated dual attachment. This eliminates the need for intermittent tuning and monitoring operations, ensuring continuous useful action without energy waste from repeated network transitions.
3Adaptability or versatility
If VoLTE voice calls require tuning into 4G LTE networks from 5G NR networks, then voice service compatibility is achieved, but network efficiency is reduced
Solution Approach 1:
The patent merges the network attachment by allowing the user equipment to simultaneously attach to both 5G NR network and VoLTE network through a single procedure. The network side coordinates both attachments, eliminating the need for separate monitoring and tuning operations while maintaining VoLTE voice call support.
Solution Approach 2:
The network side acts as an intermediary by coordinating the dual network attachment and managing the interaction between 5G NR and VoLTE networks. This intermediary coordination enables voice service compatibility while maintaining network efficiency through centralized management.
Data Source
AI summary
A network device receives, from a user equipment (UE), a Next Generation Mobile network attach request, wherein the Next Generation Mobile network attach request includes a Voice over Long Term Evolution (VoLTE) network attach request. The network device initiates attachment procedures, in response to receipt of the Next Generation Mobile network attach request and the VoLTE network attach request, to attach the UP to the Next Generation Mobile network and to a VoLTE network, and initiates establishment of a connection between the Next Generation Mobile network and the UE.