Multi-USIM UE Signaling Coordination for Wireless Connection Control
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Solution Overview
Problem
Current wireless communication systems with multi-USIM devices face challenges in managing simultaneous connections, leading to issues like missed pages, resource wastage, and misinterpretation of signaling activities due to the lack of standardized mechanisms for handling multiple USIMs, particularly in 3GPP systems.
Innovation Solution
Equipping User Equipment (UE) with a first and a second USIM, allowing it to transmit messages to a 3GPP system associated with the first USIM about signaling activities intended for the second USIM, enabling network-controlled suspension or release of the RRC connection in the first USIM system, allowing temporary transition for signaling activities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE with multiple USIMs monitors paging and performs signaling activities simultaneously in both USIM systems, then communication coverage is maintained for both subscriptions, but network resources are wasted and pages may be missed due to lack of coordination
Solution Approach 1:
The UE transmits a message to the first network node before engaging in signaling activity with the second USIM, preemptively notifying the network of the upcoming signaling event. This allows the network to suspend paging temporarily, preventing resource wastage while ensuring the UE can complete its signaling activity without missing important pages.
Solution Approach 2:
The network receives feedback from the UE about signaling activities in the second USIM system and responds by adjusting paging behavior in the first USIM system. This feedback loop enables coordinated resource management between dual USIM operations, preventing missed pages while conserving network resources during temporary suspensions.
2Ease of operation
If the UE suspends RRC connection in the first USIM system to perform signaling activity in the second USIM system, then signaling activities are completed successfully, but the duration of connection suspension may cause missed pages or service interruptions
Solution Approach 1:
The UE notifies the network in advance of the signaling activity that will occur in the second USIM system, allowing the network to suspend paging temporarily rather than continuously interrupting the UE's signaling activity. This preliminary notification enables smoother transitions and reduces service interruptions.
Solution Approach 2:
The system dynamically adjusts the paging state based on the UE's signaling activity status. The network can transition between active paging and suspended paging states, and the UE can transition between connected and suspended RRC states, optimizing the balance between signaling completion and service continuity.
3Duration of action of stationary object
If the UE maintains active RRC connection in the first USIM system while performing signaling activities in the second USIM system, then service continuity is maintained, but resource conflicts and signaling interference occur
Solution Approach 1:
The UE proactively informs the first network node about upcoming signaling activities in the second USIM system before they occur. This advance notice allows the network to temporarily suspend the RRC connection in a controlled manner, preventing resource conflicts and signaling interference while maintaining service continuity through quick resumption.
Solution Approach 2:
The message transmission mechanism acts as an intermediary between the UE's dual USIM operations and the network. It coordinates the timing and state transitions of RRC connections, enabling the network to manage resource allocation and prevent interference while maintaining service continuity across both USIM systems.
Data Source
AI summary
A method and apparatus are disclosed from the perspective of a UE (User Equipment) with a first USIM (Universal Mobile Telecommunications System Subscriber Identity Module) and a second USIM. In one embodiment, the method includes the UE transmitting, to a first network node associated with the first USIM, a message carrying information related to a signaling activity between the UE and a second network node associated with the second USIM.