Multi-SIM Cell Selection Sharing to Reduce Power Consumption
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Solution Overview
Problem
Multi-SIM terminal devices consume more power due to the lack of a unified standard in processing manners, leading to shorter standby times.
Innovation Solution
A method and apparatus for cell selection, where one SIM selects a cell for all SIMs to reside in, reducing power consumption by eliminating repeated cell selection processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each SIM performs cell selection separately, then each SIM can independently select its optimal cell, but the power consumption increases and standby time decreases
Solution Approach 1:
The patent merges the cell selection process for multiple SIMs by having one SIM perform cell selection and then sharing the selected cell information with other SIMs. This is implemented through a cell selection result sharing mechanism where the first SIM's cell selection results are transmitted to the second SIM, eliminating redundant selection operations while maintaining reliable cell selection for all SIMs.
Solution Approach 2:
The patent applies universality by enabling a single cell selection process to serve multiple SIMs simultaneously. The cell selection mechanism is designed to be multi-functional, where the selection performed by one SIM can be universally applied to other SIMs in the same terminal, reducing overall system resource consumption including power usage.
2Reliability
If each SIM performs cell selection separately, then comprehensive cell coverage is achieved, but the standby time is shortened
Solution Approach 1:
The patent combines cell selection operations for multiple SIMs into a single coordinated process. One SIM performs the cell selection and the results are shared with other SIMs, ensuring comprehensive cell coverage is maintained while eliminating redundant operations that would drain battery and reduce standby time.
3Adaptability or versatility
If there is no unified standard for multi-SIM processing, then terminal manufacturers have flexibility in implementation, but the device complexity increases
Solution Approach 1:
The patent segments the cell selection process into distinct phases: a first SIM performs cell selection independently, then the results are shared with the second SIM. This segmentation allows for standardized processing while maintaining implementation flexibility, as the core mechanism is defined but can be adapted to different terminal configurations.
Data Source
AI summary
A cell selection method includes: when a terminal contains at least two subscriber identification modules, using one of the at least two subscriber identification modules to select a cell in which each of the at least two subscriber identification modules resides.