Multi-SIM Cell Handover Signal Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current multi-SIM mobile phone processing methods lack a unified standard, leading to varied terminal behaviors and increased power consumption during cell handover, which shortens the standby time of the terminal.
Innovation Solution
A method for cell handover that involves measuring wireless signal quality with one of the N subscriber identification modules and sending a measurement report to the source base station, which includes identification information of other subscriber identification modules, allowing for coordinated cell handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all N subscriber identification modules measure wireless signal quality independently, then measurement precision is improved, but power consumption increases and standby time decreases
Solution Approach 1:
The patent merges the measurement function of all N subscriber identification modules into a single module. One SIM card is selected to perform wireless signal quality measurement on behalf of all SIM cards, while the other SIM cards reuse this measurement result. This combining approach maintains measurement accuracy for handover decisions while dramatically reducing power consumption by avoiding redundant measurements from multiple modules.
Solution Approach 2:
The measurement result obtained by one subscriber identification module serves a universal purpose for all N subscriber identification modules. The single measurement result is reused across multiple SIM cards for handover decisions, making the measurement function universal rather than dedicated to each individual module, thereby reducing overall power consumption.
2Loss of information
If all N subscriber identification modules send measurement reports, then information completeness is improved, but transmission overhead increases
Solution Approach 1:
The patent merges the measurement report sending function into a single subscriber identification module. Instead of all N modules independently sending measurement reports, only one selected module sends the report containing measurement results and identification information of other SIM cards. This combining approach ensures complete information is transmitted while reducing transmission overhead and network signaling complexity.
Solution Approach 2:
The measurement report from one subscriber identification module serves as a copy that represents the measurement state of all N modules. By sending one comprehensive report that includes identification information of all SIM cards, the system avoids needing separate reports from each module, reducing transmission overhead while maintaining information completeness.
3Measurement precision
If each subscriber identification module performs cell handover independently, then handover accuracy is improved, but processing time increases
Solution Approach 1:
The patent merges the cell handover execution into a unified process coordinated by the base station. Instead of each subscriber identification module independently performing handover procedures, the base station receives one measurement report and coordinates the handover for all N SIM cards simultaneously. This combining approach maintains handover accuracy through base station coordination while reducing processing time by avoiding sequential independent handover operations.
Data Source
AI summary
A method for cell handover. The method comprising: when a terminal comprises N subscriber identification modules, the wireless signal quality is measured using one of the N subscriber identification modules, wherein N is greater than or equal to 2.