Connected SIM Paging for Idle SIMs in Single-Radio 5G
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Solution Overview
Problem
In 5G wireless networks, devices with multiple SIMs using a single radio configuration face challenges in simultaneously monitoring for paging messages of an idle SIM while maintaining an active connection, leading to inefficient resource allocation and user experience issues.
Innovation Solution
A system and method that enables a connected SIM to monitor for paging messages of an idle SIM by coordinating radio resources and utilizing existing handover procedures to ensure both SIMs share the same carrier frequency, allowing the network to send paging messages to the idle SIM through the active SIM, and providing subscriber notifications without triggering immediate RRC connection setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device uses a single radio configuration to maintain an active connection with one SIM, then the active connection is maintained reliably, but the device cannot simultaneously monitor for paging messages of an idle SIM
Solution Approach 1:
The patent uses the connected SIM as an intermediary to deliver paging messages to the idle SIM. The network sends paging messages for the idle SIM to the connected SIM, which then forwards them to the idle SIM. This intermediary approach allows the single radio to maintain the active connection while still enabling paging message delivery to the idle SIM without disrupting the active communication.
2Loss of information
If the network sends paging messages to an idle SIM using traditional methods, then the paging is delivered, but it causes inefficient resource allocation and increased signaling overhead
Solution Approach 1:
The patent merges the paging message delivery function with the existing active connection between the connected SIM and the network. Instead of establishing a separate paging channel for the idle SIM, the system uses the active connection as a conduit for paging messages, combining multiple functions into a single existing resource and thereby improving network efficiency.
Solution Approach 2:
The active connection of the connected SIM is made multi-functional by using it not only for its primary communication purpose but also for delivering paging messages to the idle SIM. This universal use of the active connection eliminates the need for dedicated paging resources for the idle SIM, reducing overall network resource consumption.
3Reliability
If the device triggers immediate RRC connection setup upon receiving a paging message, then the idle SIM can respond quickly, but it disrupts the active communication of the connected SIM
Solution Approach 1:
The patent performs preliminary action by having the connected SIM forward the paging message to the idle SIM immediately upon receipt, but it does not immediately trigger RRC connection setup. Instead, the system prepares the paging message delivery in advance while maintaining the active connection, allowing the idle SIM to be notified without disrupting ongoing communications.
Data Source
AI summary
Various embodiments disclosed that describe systems to facilitate paging an idle subscriber identity module using a connected subscriber identity module operating in a single radio configuration. According to some embodiments, a system can comprise receiving a paging request that is designated for a first device of a communication device, wherein the communication device comprises the first device and a second device; determining whether the second device is in an active state; and in response to the determining that the second device is in the active state, transmitting a message to second device indicating that the paging message was received for the first device.