Simultaneous RF Path Selection for Dual SIM Active Communication
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Solution Overview
Problem
Electronic devices supporting multiple SIMs often operate in dual SIM dual standby mode due to the inability to select RF paths capable of simultaneous operation, limiting communication use by requiring time-divisional performance of communications associated with each SIM.
Innovation Solution
The electronic device includes a processor to select RF paths capable of simultaneous operation, converting baseband signals into RF signals and radiating communication signals for each SIM using corresponding hardware, allowing for simultaneous communication with both SIMs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electronic device operates in dual SIM dual standby mode due to inability to select RF paths capable of simultaneous operation, then device complexity is reduced, but communication productivity is limited by requiring time-divisional performance
Solution Approach 1:
The patent divides the RF path selection process into separate independent selections for each SIM card. The processor selects a first RF path for the first SIM card and a second RF path for the second SIM card independently, allowing each SIM to have its own dedicated RF path without interference. This segmentation enables simultaneous operation of multiple RF paths, resolving the contradiction between device simplicity and communication productivity.
2Speed
If the electronic device operates in dual SIM dual standby mode, then ease of operation is maintained with automatic RF path management, but communication speed is reduced due to time-divisional performance requirement
Solution Approach 1:
The processor performs preliminary selection of RF paths for each SIM card before communication operations begin. By pre-configuring and storing the selected RF paths in memory, the system eliminates the need for real-time RF path switching during communication, thereby achieving high-speed simultaneous communication while maintaining automatic operation without user intervention.
3Loss of time
If the electronic device uses time-divisional performance for communication associated with each SIM, then device complexity is minimized, but loss of time occurs due to sequential communication requirement
Solution Approach 1:
The patent changes the operational parameter from time-divisional to space-divisional multiplexing by selecting different RF paths for different SIM cards. Instead of switching RF paths in time sequence, the system allocates distinct RF paths simultaneously for each SIM, fundamentally changing the parameter of RF path allocation from temporal to spatial domain, thereby eliminating communication time loss while managing complexity through automated processor control.
Data Source
AI summary
An electronic device is provided. The electronic device includes at least one processor. The at least one processor may be configured to select at least one first RF path, perform first communication based on the at least one first RF path, identify at least one second RF path simultaneously available with the at least one first RF path, and perform second communication based on the at least one second RF path. A first baseband signal may be converted into a first RF signal and a first communication signal corresponding to the first RF signal may be radiated based on the at least one first RF path, and a second baseband signal may be converted into a second RF signal and a second communication signal corresponding to the second RF signal may be radiated based on the at least one second RF path.