Call Continuity in Weak Electric Field via Dual Network Handover
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Solution Overview
Problem
Electronic devices with multiple SIMs experience call disruptions when entering a weak electric field environment, leading to dropped calls as they switch from one network operator to another during data transmission and reception.
Innovation Solution
An electronic device with a processor and wireless communication circuit that identifies the reception state of radio signals from different network operators and performs a handover to a secondary network for maintaining call continuity, using authentication servers and enhanced packet data gateways to ensure seamless data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device switches to a second operator network when entering a weak electric field environment, then network connectivity is maintained, but call continuity is disrupted
Solution Approach 1:
The device performs preliminary actions by establishing a data bearer resource allocation with the first operator network before entering the weak electric field environment. When the handover is triggered, the pre-established bearer resource allocation enables seamless data transmission through the second operator network while maintaining call continuity, as the resource allocation was prepared in advance
Solution Approach 2:
The patent maintains continuity of useful action by preserving the data bearer resource allocation across network handovers. The data transmission and reception continue uninterrupted through the second operator network using the pre-established bearer resources, ensuring both call continuity and network connectivity without interruption
2Duration of action of stationary object
If the electronic device maintains connection with the first operator network in a weak electric field environment, then call continuity is maintained, but data transmission and reception are stopped
Solution Approach 1:
The device performs preliminary action by establishing a data bearer resource allocation with the first operator network before entering the weak electric field environment. This pre-established resource allocation enables the device to switch to the second operator network for data transmission while maintaining call continuity on the first network
Solution Approach 2:
The patent segments the communication functions by separating voice call handling from data transmission. The voice call is maintained on the first operator network where call continuity is preserved, while data transmission is handled through the second operator network using pre-established bearer resources, allowing both functions to operate simultaneously on different networks
3Productivity
If the electronic device performs handover to a second operator network, then data transmission and reception continue, but authentication complexity increases
Solution Approach 1:
The device performs preliminary authentication and resource allocation with the first operator network before handover. The data bearer resource allocation is established in advance, which simplifies the handover process by pre-configuring the necessary authentication parameters and resource allocations, reducing the complexity of real-time authentication during network switching
Data Source
AI summary
Provided are an electronic device and a control method for providing call continuity in a weak electric field environment. The electronic device according to various embodiments of the present document comprises: a processor; a memory operatively connected to the processor; and a wireless communication circuit operatively connected to the processor and the memory, wherein the processor can control the wireless communication circuit such that the electronic device receives a wireless signal for executing a call with an external electronic device through a first network, check the state of the wireless signal received through the wireless communication circuit, control, on at least a partial basis of a result of checking the checked state of the wireless signal, the wireless communication circuit such that an authentication request for performing the call is transmitted to a second network connected to the electronic device, and control, on at least a partial basis of a result of the authentication request, the wireless communication circuit such that the wireless signal, which is transmitted from the first network, for performing the call with the external electronic device is received through the second network.