Automatic Call Resumption After Network Handover
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Solution Overview
Problem
Existing network handover methods during calls, such as those described in US2018/0124653A1 and EP 2 712 232 A2, often result in call interruptions due to the need for network resource occupation and reduced call resuming speed, particularly when a device switches between Wi-Fi and 4G networks.
Innovation Solution
A method and system for automatically resuming calls after network handover, where a first terminal registers with a server through a first network, establishes a call with a second terminal, and upon network handover, constructs and sends a resume request to the second terminal via the server, allowing for seamless re-establishment of the call without requiring additional network feedback, thus minimizing call interruption and ensuring stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile phone automatically performs network handover during a call, then the mobile phone can maintain network connectivity, but the call is interrupted or disconnected
Solution Approach 1:
The system performs preliminary actions by storing call resources before network handover occurs, and prepares resume requests in advance. This allows the call to be quickly resumed after handover without interruption, resolving the contradiction between maintaining network connectivity and ensuring call continuity.
Solution Approach 2:
The server acts as an intermediary to receive and manage resume requests from the first terminal and forward them to the second terminal. This intermediary mechanism enables seamless call resumption across different networks, maintaining call continuity while allowing network handover to occur.
2Reliability
If the second terminal feeds back data synchronization information, then call data can be synchronized, but network resources are occupied and call resuming speed is reduced
Solution Approach 1:
The system uses self-service by having the first terminal autonomously construct and send resume requests containing call resources after network handover. The second terminal simply needs to receive and process these requests without needing to feed back synchronization information, thus saving network resources and reducing call resumption time while maintaining data synchronization.
3Adaptability or versatility
If the mobile phone switches between Wi-Fi and 4G networks, then network optimization is achieved, but the call becomes silent or disconnected
Solution Approach 1:
The system stores call resources in advance before network switching occurs, and prepares resume requests that can be quickly sent after handover. This preliminary preparation ensures that even when switching between Wi-Fi and 4G networks, the call remains stable and can be quickly resumed without becoming silent or disconnected.
Solution Approach 2:
The server serves as an intermediary that receives resume requests from the first terminal regardless of which network it is connected to, and forwards them to the second terminal. This intermediary mechanism decouples the network switching from call stability, allowing the mobile phone to adaptively switch between networks while maintaining reliable call connection.
Data Source
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AI summary
The present disclosure discloses a method and a system for automatically resuming a call after network handover, and belongs to the field of network calls. In the method of the present disclosure, during a call between a first terminal and a second terminal, when the first terminal is handed over from a first network to a third network, the first terminal first stores call resources, then registers with a server through the third network, constructs a resume request, and sends the resume request to the second terminal via the server, and the second terminal resumes the call with the first terminal according to the resume request. The system of the present discloses includes a first terminal, a second terminal, and a server, and the first terminal and the second terminal are respectively connected to the server. An objective of the present discloses is to overcome shortcomings of call interruption caused by network handover. The present disclosure can ensure communication stability after network handover of a communication device, thereby avoiding call interruption caused by the network handover during communication of the communication device