Electronic Device Call Setup with Provisional Responses
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Solution Overview
Problem
When an electronic device connected to a communication network that does not support a call connection, there is a delay in providing the service due to the need to switch to a second communication network, leading to extended call connection times.
Innovation Solution
The electronic device switches its communication network by transmitting a provisional response message using a first transmission protocol, then switches to a second transmission protocol after network change, and completes the call connection using the new network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device switches communication network from the first network to the second network, then call connection support is improved, but call connection time is extended
Solution Approach 1:
The electronic device performs preliminary actions by transmitting the provisional response message through the first transmission protocol before actually switching networks. This allows the device to prepare the call connection process in advance on the first network, so that when the network switch occurs, the connection process can continue more efficiently on the second network, reducing the overall time loss
Solution Approach 2:
The first transmission protocol acts as an intermediary during the network transition. By using the first transmission protocol to send the provisional response message before switching to the second network, the device creates a bridge that maintains communication continuity during the network switch, preventing complete communication breakdown and reducing reconnection time
2Ease of operation
If the electronic device uses the first transmission protocol, then message transmission is enabled on the first network, but network compatibility for call connection is insufficient
Solution Approach 1:
The electronic device dynamically switches transmission protocols based on network conditions and capabilities. It starts by using the first transmission protocol for message transmission on the first network, then transitions to the second transmission protocol when switching to the second network. This dynamic adaptation allows the device to maintain ease of operation on each specific network while achieving overall network compatibility across different communication environments
3Reliability
If the electronic device switches communication networks, then call connection capability is improved, but service provision delay increases
Solution Approach 1:
The electronic device maintains continuity of useful action by ensuring that the call connection process is not interrupted during the network switch. By transmitting the provisional response message through the first protocol before switching networks, and then continuing the connection process on the second network, the device keeps the call setup process continuously progressing rather than stopping and restarting, thereby reducing service provision delay while maintaining call connection capability
Data Source
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AI summary
An electronic device connected to a first communication network including: a communication module comprising communication circuitry; a processor operatively connected to the communication module; and a memory operatively connected to the processor, wherein the memory stores instructions that, when executed, cause the processor to control the electronic device to: transmit a message requesting a call connection through a first transmission protocol to an external electronic device using the communication module; receive a provisional response message for the request through the first transmission protocol from the external electronic device using the communication module; connect to a second communication network using the communication module based on the call connection not being supported by the first communication network; transmit a response message for the received provisional response message through a second transmission protocol to the external electronic device using the communication module; and perform the call connection using the connected second communication network.