Wireless Device Network Reselection After Voice Call
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Solution Overview
Problem
Wireless communication devices often remain on legacy networks for extended periods after a voice call, due to ongoing data traffic, preventing them from returning to LTE networks with faster data rates, resulting in suboptimal user experience.
Innovation Solution
A method where the device temporarily halts data transmission after a voice call to allow system reselection, searching for the LTE network, and if not found within a certain time, resumes data service on the legacy network, ensuring quicker return to faster data rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device continues data transmission after voice call termination, then data service continuity is maintained, but network reselection to LTE is delayed
Solution Approach 1:
The device performs preliminary actions by detecting voice call termination and proactively suspending data transmission before attempting network reselection. This preparatory suspension of data flow clears the way for successful LTE network reselection, resolving the conflict between maintaining data continuity and enabling timely network switching.
2Reliability
If the device stays on legacy network for data transmission, then data service is maintained, but data rate is reduced
Solution Approach 1:
The device dynamically adjusts its network operation mode by switching between continuous data transmission and suspended data transmission states. This dynamic behavior enables the device to prioritize LTE network reselection temporarily, achieve faster data rates when available, while ensuring data service continuity through resumption of transmission on legacy networks when LTE is unavailable.
Data Source
AI summary
A method for assisting a wireless communication device to return to a first network from a second network subsequent to termination of a voice call for which a Circuit Switched Fallback procedure was performed to transition from the first network to the second network for servicing of the voice call is provided. The method can include preventing transmission of a data flow for a data service after termination of the voice call. The method can further include searching for the first network while transmission of the data flow is prevented. If the first network is found, the method can additionally include reverting to the first network and servicing the data service on the first network. If the first network is not found, the method can also include remaining on the second network and servicing the data service on the second network.