VoWi-Fi Call Quality via ePDG Tunnel Parameter Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional Voice over Wi-Fi (VoWi-Fi) call systems experience call quality degradation, call dropping, latency, and jitter due to factors like weak Wi-Fi signals, network instability, and interference, which negatively impact user experience.
Innovation Solution
The method involves detecting voice communication over a first WLAN using an evolved Packet Data Gateway (cPDG) interface, determining ePDG interface tunnel parameters, and establishing voice communication using a second WLAN when changes in these parameters indicate a need for improved quality, thereby enhancing the VoWi-Fi call quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If VoWi-Fi call is established over a single WLAN, then device complexity is reduced, but call quality degrades due to weak signals and network instability
Solution Approach 1:
The patent implements dynamic switching between multiple WLANs based on real-time quality monitoring. The system transitions from a static single-WLAN connection to a dynamic multi-WLAN selection mechanism that adapts to changing network conditions, thereby improving call quality without requiring complex manual intervention.
Solution Approach 2:
The patent monitors and compares quality parameters (such as signal strength, packet loss, jitter) across multiple WLANs and switches between them based on parameter thresholds. This parameter-driven approach enables automatic optimization of call quality by selecting the best available network condition.
2Reliability
If voice communication switches between WLANs, then call quality is maintained, but latency increases due to switching overhead
Solution Approach 1:
The patent performs preliminary actions by pre-establishing multiple WLAN connections and maintaining background monitoring of their quality parameters before actual voice communication needs to switch. This preparation allows faster switching decisions when quality degradation occurs, reducing the latency penalty of switching.
Solution Approach 2:
The system implements continuous feedback loops that monitor voice communication quality parameters in real-time. When degradation is detected, the feedback mechanism triggers automatic switching to alternative WLANs, creating a closed-loop system that minimizes latency through rapid response to quality changes.
3Reliability
If multiple WLANs are monitored and switched between, then call quality is enhanced, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the system automatically monitors, compares, and switches between WLANs without requiring user intervention or complex manual configuration. The self-service algorithm handles all quality assessment and switching decisions autonomously, reducing the operational complexity burden on users.
Solution Approach 2:
The patent introduces an intermediary quality monitoring and decision-making module that mediates between the voice communication system and the available WLANs. This intermediary layer consolidates the complexity of multi-WLAN management into a dedicated component, simplifying the overall system architecture while maintaining enhanced call quality.
4Reliability
If ePDG interface tunnel parameters are continuously monitored, then call quality is maintained, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring of ePDG interface tunnel parameters rather than continuous monitoring. The system samples quality parameters at predetermined intervals or when threshold conditions are met, reducing energy consumption while maintaining sufficient monitoring accuracy to detect quality degradation and trigger necessary switches.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Disclosed herein is a method and apparatus for enhancing a quality of a Voice over Wi-Fi (VoWi-Fi) call in an electronic device (300). The method includes detecting, using an evolved Packet Data Gateway (ePDG) interface, a voice communication over a first wireless local area network (WLAN) among a plurality of WLANs associated with a node of a network. The method further includes determining one or more ePDG interface tunnel parameters associated with a plurality of ePDG interface tunnels. The method further includes establishing, upon detecting a change in the one or more determined ePDG interface tunnel parameters, the voice communication using a second WLAN among the plurality of WLANs to enhance the quality of the VoWi-Fi call.