State-Based 5G/4G Cellular Switching for VoWiFi Calls
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Solution Overview
Problem
Electronic devices face challenges in managing network transitions between 5th generation cellular communication and 4th generation cellular communication, particularly when voice services are involved, leading to increased signal exchanges and decreased data speeds, and difficulties in supporting network aggregation under access traffic steering, switching, and splitting (ATSSS).
Innovation Solution
The electronic device includes communication circuits for both cellular and short-range wireless communication, with processors that manage network transitions based on predefined conditions, such as signal strength and network availability, to optimize data transmission by switching between 5th and 4th generation cellular networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device switches from 5th generation cellular communication to 4th generation cellular communication to support voice service, then voice service capability is improved, but data transmission speed decreases
Solution Approach 1:
The electronic device dynamically switches between 5G and 4G cellular communication networks based on service requirements. When voice service is needed, the device transitions to 4G network which supports voice, and when only data transmission is needed, it uses 5G network for higher speed. This dynamic adaptation resolves the contradiction by allowing the system to optimize for different functions at different times.
Solution Approach 2:
The device changes the communication network parameter (from 5G to 4G) based on the required service type. By modifying this parameter, the system can support voice service when necessary while maintaining high data transmission speed when voice service is not required.
2Speed
If the electronic device switches back to 5th generation cellular communication after voice service termination, then data transmission speed is improved, but the number of signal exchanges increases
Solution Approach 1:
The electronic device performs preliminary actions by maintaining readiness to switch between networks and pre-establishing connection parameters. When voice service terminates, the device can quickly transition back to 5G network without extensive signal exchanges, as the switching mechanism is prepared in advance.
3Speed
If the electronic device maintains connection to 5th generation cellular communication while using Vo-Wi-Fi, then data transmission speed is improved, but network aggregation support under ATSSS becomes difficult
Solution Approach 1:
The system segments network management into separate functional modules: one handling cellular communication (5G/4G) and another handling Wi-Fi communication. This segmentation allows the device to maintain 5G connection for data while using Vo-Wi-Fi for voice, and facilitates ATSSS implementation by clearly defining network boundaries and management responsibilities.
Data Source
AI summary
An electronic device is provided. The electronic device includes a first communication circuit for supporting at least one of first cellular communication or second cellular communication, a second communication circuit for supporting short-range wireless communication, memory, comprising one or more storage media, storing instructions; an application processor coupled to the memory, and a communication processor coupled to the memory, wherein the instructions, when executed by the application processor, cause the electronic device to check whether the electronic device satisfies, in a state in which the electronic device is connected to a cellular network through the first cellular communication in a call connection status through voice over (Vo) wireless fidelity (Wi-Fi), a first condition related to disconnection of the first cellular communication, and transmit, to the communication processor, in a state in which the electronic device satisfies the first condition related to the disconnection of the first cellular communication, on the basis that the electronic device satisfies a second condition related to the disconnection of the first cellular communication, a signal indicating that the electronic device satisfies the second condition related to the disconnection of the first cellular communication, wherein instructions, when executed by the communication processor, cause the electronic device to prepare to disconnect the first cellular communication and connect the second cellular communication on the basis of reception of the signal indicating that the first condition related to the disconnection of the first cellular communication is satisfied, and perform the disconnection of the first cellular communication and the connection of the second cellular communication based on reception of the signal indicating that the second condition related to the disconnection of the first cellular communication is satisfied.