Voice Call Bandwidth Allocation for Stable VoWiFi and VoLTE Switching

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Solution Overview

Problem

Existing VoWiFi call solutions suffer from unstable call quality due to network speed and resource allocation issues, leading to call interruptions and poor user experience.

Innovation Solution

A method that determines the current network environment level based on network parameter information, allocates bandwidth to voice calls accordingly, and switches to another network if necessary to maintain call quality and continuity, using VoWiFi or VoLTE networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If VoWiFi call is made while watching video, then user can use Wi-Fi for both video and voice, but network bandwidth for VoWiFi call becomes low resulting in call interruption

Engineering Contradiction:
Improvenetwork resource utilizationVSAvoidcall quality stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system dynamically adjusts bandwidth allocation based on real-time network conditions and service types. When video streaming is detected, the system dynamically reduces VoWiFi bandwidth allocation to ensure video quality, and dynamically switches to VoLTE when bandwidth becomes insufficient, thus resolving the contradiction between multi-service utilization and call stability

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the bandwidth parameter allocation dynamically. By monitoring network conditions and service types, it adjusts the bandwidth assigned to VoWiFi calls in real-time, reducing bandwidth when video is detected and switching to alternative networks when necessary, thereby maintaining call quality while allowing flexible network usage

Inventive Principle:
Principle #35Parameter changes

2Productivity

If bandwidth is allocated to VoWiFi call, then call can proceed, but network speed problems reduce call quality

Engineering Contradiction:
Improvecall continuityVSAvoidcall quality
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system continuously monitors network conditions and call quality parameters, using this feedback to adjust bandwidth allocation in real-time. When network speed deteriorates or call quality metrics degrade, the feedback mechanism triggers bandwidth reduction or network switching to maintain acceptable call quality while preserving call continuity

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system introduces an intermediary mechanism that monitors network conditions and mediates between video streaming and VoWiFi call requirements. This intermediary layer detects network status and orchestrates bandwidth adjustment or network switching, preventing direct conflicts between services and maintaining both call continuity and quality

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If network switching is implemented to maintain call quality, then call stability improves, but system complexity increases

Engineering Contradiction:
Improvecall quality stabilityVSAvoidnetwork management complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by pre-configuring network switching policies and bandwidth allocation rules before actual calls occur. By establishing predetermined thresholds and switching conditions, the system simplifies real-time decision-making and reduces operational complexity while maintaining reliable call quality through automated pre-planned responses

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4167633B1Method and apparatus for voice calls
Publication Date: 2025.08.20 VIVO MOBILE COMM CO LTD
  • EP4167633B1 patent drawingFigure 1~2
  • EP4167633B1 patent drawingFigure 3~4
  • EP4167633B1 patent drawingFigure 5~6

AI summary

Disclosed are a method and apparatus for voice calls, and an electronic device, which belong to the technical field of communications. The method for voice calls comprises: according to the current network parameter information of a first network where the current voice call is, determining the current network environment level information of the first network; according to the current network environment level information, allocating a bandwidth for the current voice call, wherein the current network parameter information comprises the current network speed information; and the bandwidth is a bandwidth of the first network or a bandwidth of a second network, and the first network and the second network are different networks.