User Equipment Core Network Switching Mechanism
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Solution Overview
Problem
User equipment encounters difficulties in completing location registration when moving from a base station supporting 5GC to one that does not, leading to failed Attach or location registration processes.
Innovation Solution
User equipment is designed to connect to both a first core network (5GC) and a second core network (EPC) through a base station, using a controller to switch connections if the selected cell does not support the first core network, ensuring proper location registration by connecting to the second core network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment moves from a base station supporting 5GC to a base station that does not support 5GC, then the user equipment can maintain connection to the base station, but the location registration process fails to complete
Solution Approach 1:
The patent introduces an intermediary mechanism where the base station acts as a mediator between the user equipment and the core network. When the target base station does not support 5GC, the source base station (which supports 5GC) serves as an intermediary to facilitate the location registration process, allowing the UE to complete registration indirectly through the source base station's 5GC connection.
Solution Approach 2:
The patent segments the location registration process into distinct phases: initial attachment to the target base station, detection of 5GC support status, and conditional routing through source or target base station. This segmentation allows the system to handle different scenarios (5GC-supported vs. non-supported base stations) independently, ensuring reliable registration completion regardless of target base station capabilities.
2Ease of operation
If user equipment attempts to connect to 5GC through a base station that does not support it, then the connection process is simplified, but the Attach or location registration process is unable to be executed
Solution Approach 1:
The patent implements dynamic adaptation where the connection path is automatically adjusted based on the target base station's 5GC support status. The system dynamically switches between direct connection (when target supports 5GC) and indirect connection through source base station (when target does not support 5GC), maintaining both operational simplicity and execution reliability.
Solution Approach 2:
The patent incorporates feedback mechanisms where the user equipment or network detects whether the target base station supports 5GC, and this information feeds back into the connection establishment process. Based on this feedback, the system automatically selects the appropriate registration path, ensuring both simplicity and successful execution of the Attach process.
3Area of stationary object
If user equipment maintains connection to first core network while visiting cells of base stations that do not support the first core network, then network coverage is extended, but location registration cannot be completed
Solution Approach 1:
The patent uses the source base station as an intermediary when the target base station lacks 5GC support. This allows the UE to maintain connection to the first core network (5GC) through the source base station while technically visiting cells of base stations that do not support the first core network, thus extending effective coverage while ensuring registration completion.
Solution Approach 2:
The patent enables the base station system to perform multiple functions: direct 5GC connection when target supports 5GC, and indirect 5GC connection through source base station when target does not support 5GC. This multi-functionality allows the system to maintain universal 5GC access across diverse base station capabilities, extending coverage while ensuring reliable location registration.
Data Source
AI summary
User equipment is capable of connecting to a first core network and a second core network through a base station apparatus. The user equipment includes a controller that connects to, upon selecting or visiting a cell of a base station apparatus that does not support the first core network while connecting to the first core network or visiting the first core network, the second core network through a connection in the cell.