EPS Fallback Call Drop Reduction via LTE Connection Retention
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Solution Overview
Problem
In 5G communication systems, EPS fallback from VoLTE to LTE can cause call drops due to frequent network transitions, leading to user dissatisfaction and increased communication delays.
Innovation Solution
An electronic device is configured to maintain an LTE connection for a set time after a VoLTE call termination due to EPS fallback, storing cell information for immediate reconnection upon subsequent call requests, thereby reducing the need for immediate return to the 5G network and minimizing call drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device performs EPS fallback from 5G to LTE network when VoLTE call is unavailable, then the call can be established through LTE network, but the device experiences communication delays and call drops due to frequent network transitions
Solution Approach 1:
The electronic device performs preliminary actions by storing LTE network cell information and maintaining LTE connection state after EPS fallback. When a new call request arrives, the device can quickly reconnect to the LTE network using pre-stored cell information, avoiding the need to perform complete network selection and registration procedures from scratch, thus reducing communication delay while maintaining call reliability.
2Productivity
If the electronic device returns to 5G communication network after call termination, then the device can utilize 5G network resources, but the device experiences call drops when users reattempt calls immediately
Solution Approach 1:
The electronic device performs preliminary action by storing LTE cell information and maintaining LTE connection state after EPS fallback. When a new call request arrives, the device can quickly reconnect to the LTE network using pre-stored cell information, avoiding the need to perform complete network selection and registration procedures from scratch, thus reducing communication delay while maintaining call reliability.
3Reliability
If the electronic device maintains LTE connection state for a set time after EPS fallback, then call drops are reduced, but the device cannot switch back to 5G network immediately
Solution Approach 1:
The electronic device performs preliminary actions by storing LTE network cell information and maintaining LTE connection state after EPS fallback. When a new call request arrives, the device can quickly reconnect to the LTE network using pre-stored cell information, avoiding the need to perform complete network selection and registration procedures from scratch, thus reducing communication delay while maintaining call reliability.
Data Source
AI summary
According to various embodiments, an electronic device may comprise: a memory, at least one antenna module comprising at least one antenna, and at least one communication processor. The at least one communication processor may be configured to: control the electronic device to perform a call by voice communication connection through a second communication network, in response to receiving a first call request, based on identifying that the call is disconnected, identify information related to a call disconnected cause, based on identifying that the identified information related to the call disconnected cause corresponds to a designated condition, start a timer for deferring connection to a first communication network, and in response to receiving a second call request before the timer expires, control the electronic device to perform a voice communication connection through the second communication network currently connected the electronic device.