Client A/V Decoder Switching for Cloud Application Latency
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Solution Overview
Problem
Latency issues in communications between home networks and ISPs lead to disruptions in internet connectivity and user experience, particularly for low latency applications like video conferencing, cloud gaming, and augmented reality, due to high latency causing slow response times, decreased quality, and increased vulnerability to cyberattacks.
Innovation Solution
Systems and methods for monitoring and optimizing latency by measuring A/V latency and lip-sync status, enabling/disabling low latency mode based on predefined thresholds, and configuring devices to minimize resource consumption and improve communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If devices are configured in low latency mode to support latency-sensitive applications, then latency for video conferencing, cloud gaming, and AR/VR applications is improved, but resource consumption and power usage increase
Solution Approach 1:
The system dynamically adjusts device configuration based on real-time latency measurements. The agent continuously monitors A/V latency and lip-sync status, and only activates low latency mode when measurements indicate unacceptable latency levels. This dynamic approach ensures low latency mode is active only when necessary, reducing unnecessary resource consumption while maintaining performance when needed.
Solution Approach 2:
The system implements a feedback loop where the agent measures A/V latency and lip-sync status, compares them against predefined thresholds, and adjusts device configuration accordingly. This feedback mechanism ensures that low latency mode is activated only when measurements show unacceptable latency, and deactivated when latency is acceptable, optimizing the balance between performance and resource consumption.
2Reliability
If low latency mode is activated to improve communication quality for real-time applications, then user experience for video conferencing and gaming is improved, but device complexity and configuration management increase
Solution Approach 1:
The agent autonomously performs latency measurements, compares results against thresholds, and adjusts device configuration without requiring manual intervention. The system self-monitors A/V latency and lip-sync status, automatically activates or deactivates low latency mode based on measurements, and manages its own configuration. This self-service approach simplifies configuration management while maintaining reliable communication quality.
3Quantity of substance
If larger burst data communications are used to support internet speeds, then bandwidth capacity is improved, but communication latency increases due to larger buffers at each node
Solution Approach 1:
The system applies different buffer configurations at different nodes based on local latency requirements. When the agent detects unacceptable latency, it configures devices to use smaller buffers and reduced burst sizes specifically for latency-sensitive traffic. This local optimization allows the network to maintain high bandwidth capacity for general traffic while reducing latency for applications that require it, rather than compromising buffer sizes system-wide.
Data Source
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AI summary
Described embodiments provide systems and methods for latency optimization for cloud applications. An agent (310) of a client device (302) comprising an audio decoder (408A) and a video decoder (408A) can monitor video and audio data paths of an application communicating audio/video (A/V) data from one or more servers to the client device (302). The agent (310) can measure, using the audio decoder (408A) and the video decoder (408A), an A/V latency and a lip-sync status of the video and audio data paths of the application. The agent (310) can determine, based on at least one or more measurements of the A/V latency and the lip-sync status, to enable a low latency mode for at least one of the video decoder (408A) or the audio decoder (408A). The agent (310) can configure, responsive to the determination, the low latency mode on one of the video decoder (408A) or the audio decoder (408A).