Multi-SIM Paging Optimization via MM Context Association
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Solution Overview
Problem
Existing technologies face challenges in efficiently paging multi-SIM devices within the same network, particularly when the UE is registered with both SIMs and one SIM's radio resources are occupied by an active communication, preventing the UE from receiving paging messages for the other SIM.
Innovation Solution
The proposed solution involves optimizing the paging process by associating the Mobility Management (MM) contexts for multiple USIMs in the network. Before initiating core network paging, the network checks the connection management state of the associated MM context. This allows for dynamic decision-making on whether to send a paging message to the UE using one SIM based on the activated services of the other SIM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE is registered with both SIMs in the same network, then the UE can maintain idle operation on one subscription while on a best effort data connection on the other subscription, but the radio resources for one SIM are occupied by an active communication, preventing the UE from receiving paging messages for the other SIM
Solution Approach 1:
The network performs preliminary actions by checking the connection management state and activated services of the other SIM before initiating paging for a particular SIM. This advance check allows the network to determine whether the UE can actually receive paging messages, preventing unnecessary paging attempts when radio resources are occupied.
Solution Approach 2:
The network uses feedback information about the UE's connection state and activated services to make informed paging decisions. By monitoring whether the UE is in idle or connected mode for the other SIM and what services are active, the network can dynamically adjust paging behavior to ensure reliable message delivery.
2Reliability
If the network sends paging messages for both SIMs regardless of connection state, then all possible paging attempts are made, but unnecessary paging and network resource usage occurs when the UE cannot receive messages
Solution Approach 1:
The network performs preliminary checks of the UE's connection management state and activated services before initiating paging procedures. This advance assessment allows the network to avoid wasting resources on paging attempts when the UE is in a state where it cannot receive messages, such as when connected to the other SIM with high-priority services active.
Solution Approach 2:
Instead of attempting to page for both SIMs unconditionally (excessive action), the network applies partial action by selectively paging only when the UE's connection state and service activation indicate it can actually receive the messages. This selective approach reduces wasted network resources while maintaining reliable delivery when possible.
3Loss of energy
If the network checks connection state and activated services before paging, then unnecessary paging is minimized, but additional network processing and signaling is required
Solution Approach 1:
The network leverages existing multi-functional capabilities already present in the core network for managing multi-SIM UEs. The same mechanisms used for tracking connection states and managing services are reused for paging decisions, avoiding the need for entirely new complex processing systems while still achieving resource optimization.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for paging multi-SIM devices in the same network. One apparatus includes a processor coupled with a memory and configured to cause the UE to: perform a first registration with a first network using a first Subscriber Identity Module (SIM) of the UE, wherein the first SIM is associated with a first identifier based on the first registration; perform a second registration with a second network using a second SIM of the UE; and indicate the first identifier to the second network during the second registration and based on the first network and the second network being associated with a Mobile Network Operator (MNO).