Macro-to-Private Network Interworking via Proactive UE Redirection
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Solution Overview
Problem
Existing solutions for transitioning between public and private mobile networks are inefficient, leading to battery drain and delays due to periodic scanning for higher priority networks, especially when private networks are not available.
Innovation Solution
A network-based approach where a macro network device stores a neighbor list of overlapping private networks and sends a release message to redirect user equipment (UE) devices to private networks when available, using modified system information blocks and RRC release messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment performs periodic scanning for higher priority networks, then network selection capability is improved, but battery life deteriorates and transition delays increase
Solution Approach 1:
The macro network device performs preliminary action by storing neighbor list information of overlapping private networks in advance and proactively sending release messages to redirect UE devices to private networks when available, eliminating the need for UE to perform periodic scanning and thus conserving battery life while maintaining network selection capability
Solution Approach 2:
The macro network device acts as an intermediary between the UE device and private network, using modified system information blocks and RRC release messages to facilitate network transitions, thereby reducing the energy consumption at UE while maintaining adaptability
2Adaptability or versatility
If user equipment performs periodic scanning for higher priority networks, then network selection capability is improved, but transition time deteriorates
Solution Approach 1:
The macro network device stores neighbor list information in advance and proactively initiates redirection to private networks when available, eliminating the delay associated with periodic scanning and enabling faster network transitions
Solution Approach 2:
The macro network device uses feedback from network conditions and UE subscription information to dynamically send release messages that redirect UE devices to private networks, enabling proactive and faster transitions compared to reactive scanning approaches
3Speed
If macro network stores neighbor list of private networks, then transition speed is improved, but network complexity increases
Solution Approach 1:
The macro network device performs multiple functions including storing neighbor list information, detecting UE subscriptions, sending release messages, and facilitating network transitions, thereby achieving fast transitions without requiring separate dedicated components for each function
Solution Approach 2:
The patent modifies existing system information blocks and RRC release messages to include private network redirection capabilities, enabling fast transitions by changing message parameters rather than adding entirely new communication protocols
Data Source
AI summary
Systems and methods described herein provide a network-based solution to efficiently transition private network subscribers from a macro network to a private network. A network device in the macro network stores a neighbor list identifying a private network that has overlapping coverage with a cell for the macro network. The network device detects that a user equipment (UE) device connected to the network device has a subscription to the private network and, in response to the detecting, sends, a release message to the UE device. The release message includes a redirection to the private network.