UE Network Name Display in CSFB Combined Attach
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Solution Overview
Problem
In wireless communications, user equipment (UE) faces challenges in determining which network name to display during combined attach or tracking area update procedures in shared network scenarios, particularly when the PLMN IDs of the LTE and CS domain networks differ, leading to inconsistent or unknown network name displays.
Innovation Solution
The UE method involves acquiring PLMN IDs of both LTE and CS domain networks and displaying a predetermined network name based on these IDs, either by default or after receiving an updated network name from the network device, ensuring consistency and standardization of network name display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the UE displays network name according to PLMN ID configuration of the UE, then the network name display is simple, but the UE cannot determine which PLMN ID corresponding to a network name to be displayed in shared network scenarios
Solution Approach 1:
The network side (MME or MSC/VLR) performs preliminary action by determining and delivering the to-be-displayed network name to the UE before the UE needs to display it. This resolves the contradiction by having the network side pre-process the network name selection based on PLMN IDs, so the UE receives a ready-to-display name without needing to independently determine which PLMN ID to use.
2Loss of information
If the network side delivers a to-be-displayed network name to the UE, then the network name display accuracy is improved, but in some scenarios the UE still cannot determine a to-be-displayed network name and the MME does not learn which network name is displayed on the UE
Solution Approach 1:
The patent implements feedback mechanisms where the UE reports the displayed network name back to the network side (MME). This allows the network side to verify which network name is actually displayed on the UE, resolving the issue where the MME does not learn which network name is displayed. The feedback loop ensures both accuracy and network-side awareness of the displayed name.
3Adaptability or versatility
If multiple PLMNs provide CS service for a UE, then network sharing capability is improved, but the UE cannot determine which PLMN ID to use for network name display
Solution Approach 1:
The patent introduces the network side (MME or MSC/VLR) as an intermediary that mediates the network name selection process in shared network scenarios. Instead of the UE directly selecting which PLMN ID to display, the intermediary receives multiple PLMN IDs, determines the appropriate one based on network policies and scenarios, and delivers the correct network name to the UE. This resolves the ambiguity while maintaining network sharing capability.
Data Source
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Figure 1b
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AI summary
Embodiments of the present invention provide a method and an apparatus for displaying a network name. By using a combined attach procedure or a combined tracking area update procedure, a user equipment UE registers with a long term evolution network and a first circuit switched domain network, and acquires a public land mobile network identity PLMN ID of the long term evolution network and a PLMN ID of the circuit switched domain network. Before a to-be-displayed second network name sent by a first network device on the long term evolution network is received, the UE displays a first network name corresponding to a predetermined PLMN ID, where the predetermined PLMN ID is one of the PLMN ID of the long term evolution network and the PLMN ID of the circuit switched domain network. In the foregoing solution, a problem where after a CSFB combined attach process or a CSFB combined location update process, a UE does not determine which network name to display is resolved, and a method for displaying a network name on a terminal is standardized.