AVB Network Stream Mapping Across Layer 2 Domains
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Solution Overview
Problem
Audio Video Bridging (AVB) networks face challenges in maintaining quality-of-service and low latency when extended across large geographical areas or involving a large number of devices, making real-time streaming of audio and video content impractical due to high latency and device synchronization issues.
Innovation Solution
A method is established to connect talker and listener devices across extensive networks by mapping stream identification information between Layer 2 domains using Layer 3 protocols, enabling the creation of a single data stream that traverses multiple network domains, including AVB SRP and RSVP protocols, to ensure synchronized and low-latency data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If AVB network is extended across large geographical areas or numerous devices, then network coverage and device connectivity are improved, but latency increases and quality-of-service deteriorates
Solution Approach 1:
The network is divided into multiple Layer 2 domains, each maintaining AVB quality-of-service guarantees independently. Stream identification information is mapped between domains to enable cross-domain communication while preserving low-latency characteristics within each segment.
Solution Approach 2:
Layer 3 protocols serve as intermediaries between Layer 2 domains, enabling connection establishment across domains without compromising the AVB quality-of-service guarantees. The intermediary layer allows extended network coverage while maintaining the performance characteristics of individual domains.
2Adaptability or versatility
If AVB network includes large number of talker and listener nodes, then network versatility and application scope are improved, but device tracking and synchronization complexity increases
Solution Approach 1:
The network is segmented into Layer 2 domains with limited numbers of devices each, simplifying tracking and synchronization within domains. Stream identification mapping enables coordination between domains, allowing the overall network to support large numbers of devices while maintaining manageable complexity at each segment.
Solution Approach 2:
Layer 3 protocols act as intermediaries that handle the complexity of tracking and synchronizing devices across multiple domains. This intermediary layer abstracts the complexity from individual domains, enabling versatile multi-device support without proportionally increasing synchronization difficulty.
3Adaptability or versatility
If stream identification information is mapped between Layer 2 domains using Layer 3 protocols, then cross-domain data streaming capability is improved, but protocol integration complexity increases
Solution Approach 1:
The stream identification mapping mechanism is designed to work universally across different Layer 2 domains, enabling cross-domain streaming without requiring domain-specific customization. This universal approach simplifies protocol integration by providing a standardized method for establishing connections across diverse network segments.
Data Source
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AI summary
The various embodiments set forth a method of establishing a connection between a talker device and a listener device over a network. The method comprises receiving first stream identification information for a first data stream segment disposed in a first layer 2 domain that includes a talker device, based at least in part on a mapping of the first stream identification information to the second stream identification information, determining second stream identification information for a second data stream segment that links the first layer 2 domain to a second layer 2 domain that includes a listener device, and transmitting the second stream identification information to the second layer 2 domain via a layer 3 protocol.