Network Selection for Shared Cells Using Priority-Based PLMN Lists
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Solution Overview
Problem
In shared wireless communication networks, user equipment (UE) often prefer the current registered network over higher priority networks, leading to poor user experience due to communication interruptions and delays, especially when within coverage of the home network or a network with higher priority, resulting in unstable and costly services.
Innovation Solution
A method and device for network selection in shared cells, where UE receives network selection indication information to prioritize equivalent home networks or networks with higher priority, allowing for automatic selection of a more stable and reliable service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE automatically selects the current registered network (RPLMN) in a shared cell, then network selection simplicity is maintained, but service quality and reliability deteriorate when the RPLMN is not the highest priority network
Solution Approach 1:
The network pre-configures a PLMN list with priority rankings before the UE enters a shared cell. When the UE needs network selection, it automatically chooses the highest priority network from this pre-prepared list, eliminating the need for complex real-time decisions while ensuring optimal service quality.
Solution Approach 2:
The patent introduces dynamic network selection where the UE can switch between automatic selection (using priority-based PLMN list) and manual selection modes. This dynamic adaptability allows the system to balance between operational simplicity and service quality based on specific scenarios.
2Device complexity
If the UE remains in roaming state by selecting VPLMN, then network selection complexity is reduced, but user experience and service cost deteriorate
Solution Approach 1:
The network provides advance guidance through network selection indication information, telling the UE which network to select before the UE actually performs network selection. This preliminary instruction simplifies the UE's decision-making process while ensuring optimal network choice for user experience.
Solution Approach 2:
The network monitors UE location and network conditions, then provides feedback in the form of network selection indication information. This feedback mechanism enables the network to guide UEs to select appropriate networks (home network or higher priority networks) without increasing UE complexity.
3Reliability
If frequent network reselection is performed to find higher priority networks, then service quality improves, but signaling load and time consumption increase
Solution Approach 1:
The PLMN list with priority rankings is pre-configured by the network, allowing the UE to immediately select the highest priority available network without iterative probing or frequent reselection attempts. This eliminates time-consuming trial-and-error network selection processes.
Solution Approach 2:
The network provides network selection indication information that directly guides the UE to the optimal network, eliminating the need for frequent reselection. This feedback-based approach reduces signaling load and time consumption by providing definitive selection guidance.
Data Source
AI summary
The present invention relates to the field of communications. Provided in an embodiment of the present invention are a method and device for network selection from shared networks, realizing network selection when a UE accesses a shared cell. The method comprises: a UE receives a network selection instruction; and the UE selects a target network according to the network selection instruction. The embodiment of the present invention is used to select a network from shared networks.