Multi-SIM Paging via Adjacent Base Stations in RRC Inactive State
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Solution Overview
Problem
In multi-SIM mobile phones, the lack of a unified standard leads to inefficient communication between SIMs, resulting in unnecessary operations, power consumption, and signaling waste due to separate handling of each SIM by the network.
Innovation Solution
A method and apparatus for sending a paging message from a first base station to a second SIM in an RRC inactive state through an adjacent target base station, reducing the need to page all base stations in the RNA, thereby optimizing communication and minimizing signaling costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network pages all base stations in the RNA for each SIM separately, then the paging coverage is complete, but the signaling overhead and power consumption increase significantly
Solution Approach 1:
The patent merges the paging operations for multiple SIMs by having the first base station send a single paging message to the target base station that contains paging information for both the first SIM and the second SIM. This combining of paging operations reduces the total number of signaling transmissions while ensuring both SIMs are paged, thereby reducing power consumption while maintaining complete paging coverage.
Solution Approach 2:
The paging message is designed to serve multiple functions simultaneously - it pages both the first SIM and the second SIM in one transmission. This multi-functional paging approach allows a single signaling operation to achieve what would otherwise require separate paging operations for each SIM, reducing overall signaling overhead and energy consumption.
2Adaptability or versatility
If the network treats each SIM as a separate terminal, then each SIM can be managed independently, but unnecessary operations and signaling waste occur
Solution Approach 1:
The patent combines the management of multiple SIMs by allowing the first base station to page multiple SIMs (first SIM and second SIM) through a single paging message sent to the target base station. This merging of operations maintains the independence of each SIM's management while eliminating redundant signaling operations, thereby improving communication efficiency without sacrificing adaptability.
3Reliability
If paging messages are sent to all adjacent base stations, then the paging reliability is high, but the signaling overhead increases
Solution Approach 1:
The patent merges multiple paging transmissions into a single paging message that is sent from the first base station to the target base station. This consolidated paging message includes information for both SIMs and is forwarded by the target base station to its adjacent base stations. This approach maintains high paging reliability through proper message distribution while significantly reducing the total quantity of signaling overhead by eliminating redundant separate paging messages.
Data Source
AI summary
A method for sending a paging message is performed by a first base station connected to a first SIM in a terminal, which sends to a target base station a paging message for paging a second SIM in a radio resource control (RRC) inactive state within a terminal. The target base station is a second base station adjacent to the first base station, or the target base station includes a second base station and a base station adjacent to the second base station.