AVB Network Inter-Domain Linking via Layer 3 Protocol Translation
Find Innovative SolutionsGenerate Solutions
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 impractical due to inherent latency in Internet connections and difficulty in tracking and synchronizing network devices.
Innovation Solution
The solution involves establishing a connection between talker and listener devices by using multiple network domains, with one domain employing OSI Layer 2 protocols like AVB Stream Reservation Protocol (SRP) for synchronized data streaming, and another using OSI Layer 3 protocols like Integrated Services (IntServ) to link them through an Open Systems Interconnection (OSI) Layer 3 protocol, effectively treating data streams as a single stream across the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If AVB network is extended across large geographical areas or Internet connections, then network coverage and reachability are improved, but latency increases and quality-of-service deteriorates
Solution Approach 1:
The network is divided into multiple AVB domains, each maintaining local quality-of-service guarantees. By segmenting the large-scale network into smaller manageable domains with controlled latency characteristics, the system achieves both extended coverage and maintained service quality within each segment.
Solution Approach 2:
Border devices act as intermediaries between different AVB domains and the Internet. These border devices perform protocol translation and packet marking, enabling AVB traffic to traverse non-AVB networks while maintaining quality-of-service through intermediary translation of reservation protocols and traffic prioritization.
2Adaptability or versatility
If AVB network includes large number of talker and listener nodes, then network versatility and functionality are improved, but tracking and synchronizing devices becomes difficult
Solution Approach 1:
The network is organized into multiple AVB domains with border devices that manage inter-domain communication. This segmentation allows each domain to independently track and synchronize its devices, reducing overall system complexity while supporting a large total number of nodes across the federated network.
Solution Approach 2:
Border devices perform multiple functions including protocol translation, packet marking, flow label translation, and coordination between different AVB domains. This multi-functionality consolidates management complexity into specialized border devices rather than requiring every device to participate in complex global synchronization.
Data Source
Figure 1
Figure 2A
Figure 2B
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.