WiFi Mesh Video Stream Transmission Mode Adaptation
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Solution Overview
Problem
WiFi mesh networks face challenges in efficiently transmitting video streams, particularly in determining optimal transmission modes and managing multiple video streams to ensure high quality and reliability, especially in heterogeneous station environments.
Innovation Solution
The method involves dynamically determining transmission modes for video streams based on link conditions, creating multiple video queues with adaptive weights, and implementing a multi-layer queue management structure to prioritize I-frames for reliable transmission, ensuring better video quality and QoS across various stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multicast mode is used for video stream transmission, then transmission efficiency is improved, but transmission reliability deteriorates
Solution Approach 1:
The patent implements dynamic mode selection that adapts transmission mode based on real-time link conditions. The system transitions between multicast and unicast modes dynamically, selecting multicast when link quality is good for efficiency, and switching to unicast when reliability is needed, thus resolving the contradiction between transmission efficiency and reliability
Solution Approach 2:
The patent changes the transmission mode parameter based on link quality metrics. By monitoring link conditions and adjusting the transmission mode parameter between multicast and unicast, the system optimizes both efficiency and reliability according to actual network state
2Adaptability or versatility
If multiple video streams are transmitted simultaneously, then service coverage is improved, but QoS guarantee deteriorates
Solution Approach 1:
The patent segments multiple video streams into separate queues, with each queue independently managed. This segmentation allows different QoS policies to be applied to different streams, ensuring that each stream receives appropriate resource allocation and QoS guarantees even when multiple streams are transmitted simultaneously
Solution Approach 2:
The patent implements differentiated queue management where each video stream queue has its own weight and priority settings based on link quality. This local quality approach ensures that each stream receives appropriate QoS treatment tailored to its specific requirements and link conditions
3Adaptability or versatility
If dynamic mode selection is implemented, then transmission adaptability is improved, but system complexity increases
Solution Approach 1:
The system implements self-service through automatic link quality monitoring and autonomous mode selection. The access point automatically evaluates link conditions and selects the appropriate transmission mode without requiring complex external control mechanisms, reducing system complexity while maintaining high adaptability
Data Source
AI summary
The present disclosure provides a technical scheme for transmitting video streams in WiFi mesh networks, including a method for transmitting multicast video in an access points in a WiFi mesh network, wherein the method includes: receiving a video stream and determining the node(s) to which the video stream needs to be transmitted, wherein the video stream includes a multicast address; determining dynamically a transmission mode of the video stream and transmitting corresponding video stream to multiple stations using the transmission mode when the nodes are the multiple stations corresponding to the multicast address; transmitting corresponding video stream to a next access point using unicast mode when the node is the next access point.