Dejitter Buffer Voice Activity Handover Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional dejitter buffers are inadequate in managing voice over Internet protocol (VOIP) handovers between cell sites, leading to noticeable voice interruptions due to limited buffer depth and packet flow disruptions during handovers, especially in dynamic environments.
Innovation Solution
A technique that proactively increases the dejitter buffer size based on voice activity data before handovers, using predictive speech-to-text mechanisms to identify voice gaps and delay or initiate handovers during periods of inactivity, allowing buffered packets to be played out during and after handovers, thereby reducing interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional dejitter buffers are used with fixed buffer depth, then device complexity is reduced, but voice interruptions occur during handovers due to insufficient buffer capacity
Solution Approach 1:
The dejitter buffer size is dynamically adjusted based on detected voice activity gaps. During voice inactivity periods, the buffer is enlarged to accommodate handover packet delays. During active speech, the buffer returns to normal size. This dynamic adaptation resolves the contradiction by providing enhanced reliability during handovers without permanently increasing device complexity.
Solution Approach 2:
The system performs preliminary detection of voice activity gaps before handovers occur. When a voice gap is detected, the dejitter buffer is proactively enlarged in advance of the handover event. This preliminary action ensures that sufficient buffer capacity is available to absorb handover-induced packet delays, preventing voice interruptions without requiring permanent buffer expansion.
2Reliability
If dejitter buffer size is increased to accommodate handover delays, then voice interruptions are reduced, but packet delay variation increases due to longer buffering
Solution Approach 1:
The dejitter buffer size is dynamically adjusted based on detected voice activity gaps. During voice inactivity periods, the buffer is enlarged to accommodate handover packet delays. During active speech, the buffer returns to normal size. This dynamic adaptation resolves the contradiction by providing enhanced reliability during handovers without permanently increasing device complexity.
Solution Approach 2:
The system periodically monitors voice activity to identify gaps in speech patterns. This periodic detection enables timely adjustment of buffer size - enlarging during detected gaps and reducing during active speech periods. This periodic action pattern allows the system to mitigate packet delay variation by only increasing buffer size when necessary, rather than maintaining permanently enlarged buffers.
3Reliability
If handovers are delayed to occur during voice gaps, then voice quality is improved, but handover response time increases
Solution Approach 1:
The system performs preliminary detection of voice activity gaps before handovers occur. When a voice gap is detected, the dejitter buffer is proactively enlarged in advance of the handover event. This preliminary action ensures that sufficient buffer capacity is available to absorb handover-induced packet delays, preventing voice interruptions without requiring permanent buffer expansion.
Solution Approach 2:
The system continuously monitors voice activity patterns and uses this feedback to determine optimal handover timing. When feedback indicates a voice gap is present, the system accelerates handover execution. When active speech is detected, handover is deferred. This feedback mechanism resolves the contradiction by enabling fast handovers precisely when voice quality would not be degraded, and delaying handovers only when necessary to maintain voice quality.
Data Source
AI summary
A more efficient network can be achieved by leveraging an adaptive dejitter buffer. The dejitter buffer can be dynamically adjusted based off a network data analysis. A communication handover can be adjusted or shifted based on voice inactivity data related to a forecasted punctuation. The dejitter buffer memory/depth of a mobile device can also be adjusted in accordance with receiving a delay interruption length associated with another mobile device. Thereafter, the dejitter buffer memory can be filled with voice packet data to decrease a packet delay variation at the mobile device.