UE Call Setup Component Delays Request for Network Stability
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Solution Overview
Problem
In modern telecommunication systems, voice call setup procedures can fail due to changes in radio frequency or technology, such as during fallback from 5G to LTE networks, leading to service disruptions and call failures.
Innovation Solution
Implementing a call setup component in user equipment (UE) that delays the initial connection request and assesses signal strength and quality across different radio frequencies and technologies before sending the request, allowing it to determine the optimal network for establishing a voice communication, thereby avoiding call setup failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the call setup procedure is initiated immediately when a voice communication request is received, then the call setup speed is improved, but the call setup may fail due to radio frequency changes or network fallback
Solution Approach 1:
The patent applies preliminary action by delaying the call setup request transmission until after the UE has completed network measurements and determined the optimal network. The call setup component stores the outgoing call request temporarily and only transmits it after confirming stable network conditions, preventing call setup failures due to subsequent radio frequency changes or network fallback.
2Reliability
If the UE delays the call setup request to assess signal strength and quality, then the call setup reliability is improved, but the call setup time increases
Solution Approach 1:
The patent applies partial action by performing only essential network measurements (signal strength and quality assessment) before call setup, rather than comprehensive network evaluation. The call setup component delays transmission only long enough to obtain current network status from the radio frequency management component, balancing reliability improvement with minimal time loss.
3Device complexity
If the UE sends the call setup request using the current radio frequency, then the call setup process is simple, but the call may fail due to network fallback or frequency changes
Solution Approach 1:
The patent applies feedback by implementing a closed-loop call setup process where the call setup component receives network status information from the radio frequency management component, evaluates signal strength and quality, and makes informed decisions about call setup transmission. This feedback mechanism ensures calls are initiated only when network conditions are optimal, significantly improving reliability.
Data Source
AI summary
A user equipment (UE) can determine when to send an initial request for a voice communication to an Internet Protocol (IP) Multimedia Subsystem (IMS) core of a telecommunication network. For instance, the UE can identify when a call setup instruction should be sent to the IMS to cause a communication channel to be established. The UE can determine whether the UE will experience a change to another radio frequency band or radio technology based on test data, and delay sending the call setup instruction for a time period during which the test data can be analyzed.