Dynamic SIM Switching for DSDS Voice Data Continuity
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Solution Overview
Problem
Conventional Dual SIM Dual Standby (DSDS) devices cannot maintain a data services session when a voice call is received on a different SIM, as they must put the active data services session on standby to establish the voice call, disrupting ongoing data operations.
Innovation Solution
The method involves dynamically switching the data services session from one SIM to another, allowing a DSDS device to emulate Dual SIM Dual Active (DSDA) functionality by reestablishing the data services session on the SIM supporting the voice call, while maintaining the voice call, using dynamic data services to manage the switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voice call is received on one SIM while data services are active on another SIM in a DSDS device, then the voice call can be established, but the data services session must be interrupted and put on standby
Solution Approach 1:
The patent implements dynamic SIM switching capability that allows the system to change the active SIM card based on current service requirements. When a voice call is received on one SIM, the system dynamically switches the transceiver to that SIM for the call duration, then switches back to the original SIM to resume data services, enabling adaptive response to different service priorities without hardware modifications
Solution Approach 2:
The system changes the operational state parameters of the transceiver by switching between different SIM cards. The method involves changing the active SIM parameter from the data services SIM to the voice call SIM when needed, maintaining service quality by preserving session information and rapidly switching back after the call, thus resolving the contradiction between voice call reliability and data services continuity
2Productivity
If two transceivers are used to enable simultaneous voice and data communications (DSDA), then both subscriptions can be active at the same time, but the device cost and power consumption increase significantly
Solution Approach 1:
The patent makes a single transceiver perform multiple functions by switching it between different SIM cards as needed. The same transceiver hardware is used for both voice calls on one SIM and data services on another SIM at different times, eliminating the need for separate transceivers while maintaining the capability to handle both voice and data services, thus reducing power consumption and cost while preserving productivity
Solution Approach 2:
The system merges the voice and data service capabilities into a single transceiver by implementing rapid SIM switching. Instead of having separate transceivers for voice and data, the patent combines both functions into one transceiver that can be dynamically allocated to different SIM cards based on service priority, achieving resource consolidation without sacrificing service capability
Data Source
AI summary
Methods, systems and devices are provided for controlling a communication device. Embodiments include receiving, through the transceiver, a voice call from a first network subscription associated with a first SIM of the communication device. The voice call may interrupt an active data services session through the transceiver with a second network subscription associated with a second SIM of the communication device. Also, embodiments include establishing an active voice communication connection for the voice call on the transceiver with the first network subscription. Additionally, reestablishing the active data services session through the transceiver with the first network subscription while maintaining the active voice communication connection for the voice call with the first network subscription.