Network Switching in Multi-Operator Core Networks
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Solution Overview
Problem
Network switching efficiency is low in multi-operator core networks, requiring terminals to search through multiple standards and operators, leading to prolonged switching times and affected user experience.
Innovation Solution
A network switching method where a terminal receives a system message with PLMN status information, allowing it to directly select and register with an available PLMN from the list, bypassing the need for extensive network searching, by using the cellReservationStatus parameter to determine PLMN availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal traverses all standards in the PLMN list to perform network switching, then the switching can be completed according to standard procedures, but the switching efficiency is low and switching time is prolonged
Solution Approach 1:
The network device pre-arranges the PLMN list with status information indicating which PLMNs are available for registration. When network switching is needed, the terminal can directly select an available PLMN from this pre-arranged list without having to traverse all standards, thereby reducing switching time while ensuring reliable switching completion.
2Reliability
If the terminal performs extensive network searching to find an available PLMN, then it can ensure finding a suitable network for registration, but the switching efficiency is reduced
Solution Approach 1:
The network device performs preliminary action by pre-configuring and broadcasting the PLMN list with status information indicating which networks are available for registration. This eliminates the need for the terminal to perform extensive network searching, as the available networks are already identified and presented in the system message, thereby improving switching efficiency while ensuring registration success.
Solution Approach 2:
The PLMN list with status information acts as an intermediary between the network device and the terminal. Instead of the terminal directly searching for available networks, the network device provides this intermediary information structure that guides the terminal to available PLMNs, thereby improving switching efficiency while ensuring reliable network registration.
3Reliability
If the terminal follows standard PLMN selection procedures, then the switching process is standardized and reliable, but the user experience is affected due to prolonged switching time
Solution Approach 1:
The network device performs preliminary action by pre-arranging the PLMN list with status information. This allows the terminal to follow a simplified selection process that maintains standardization reliability while significantly reducing switching time, thereby improving user experience without sacrificing process standardization.
Data Source
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AI summary
Embodiments of the present invention relate to a network switching method and a terminal. The method includes: receiving, by the terminal, a system message sent by a network device, where the system message includes information about at least two public land mobile networks PLMNs, each piece of the information about the at least two PLMNs includes a status of a corresponding PLMN, the at least two PLMNs belong to a multi-operator core network MOCN, and one of the at least two PLMNs is a currently registered PLMN of the terminal; and when determining according to a status of the currently registered PLMN that the currently registered PLMN is unavailable, selecting, by the terminal according to the information about the at least two PLMNs, a PLMN whose status is available from the at least two PLMNs except the currently registered PLMN to perform registration. According to the embodiments of this application, when a current network is unavailable, the terminal directly selects a PLMN according to a PLMN list in the system message and performs registration. Current network searching does not need to be performed in a switching process, and therefore switching efficiency is higher.