SOME/IP Stream Interworking with AVB Layer 2 QoS
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Solution Overview
Problem
Current methods for processing Service Oriented Middleware over Internet Protocol (SOME/IP) streams in in-vehicle networks do not effectively interwork with Audio Video Bridging (AVB) technology, leading to unguaranteed Quality of Service (QoS) for layer 2 streams, particularly in transmission protocols like TCP and UDP.
Innovation Solution
A method and apparatus for processing SOME/IP streams through interworking with AVB technology, where a transmission scheme is determined during the service discovery procedure, and an InitialEvent message is generated and transmitted to ensure that the SOME/IP stream is transmitted through a layer 2 of AVB, utilizing L2-SRP for guaranteed QoS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SOME/IP streams are transmitted through TCP or UDP protocols, then the transmission flexibility is maintained, but the Quality of Service (QoS) cannot be guaranteed
Solution Approach 1:
The patent introduces an AVB intermediary layer between the SOME/IP application layer and the physical transmission medium. This intermediary (AVB network) provides QoS guarantees through standardized mechanisms while allowing SOME/IP to maintain its existing TCP/UDP protocols, thus resolving the contradiction between QoS requirements and protocol flexibility
Solution Approach 2:
The patent segments the transmission system into distinct layers: the SOME/IP service layer remains unchanged for flexibility, while the underlying AVB network layer provides QoS guarantees. This segmentation allows each layer to independently optimize for its specific requirements without compromising the other
2Reliability
If AVB technology is integrated for QoS guarantee, then the transmission reliability is improved, but the system complexity increases
Solution Approach 1:
The patent leverages the universal AVB standard which can handle multiple types of media streams (audio, video, data) with QoS guarantees through a unified mechanism. This multi-functionality reduces the need for separate complex QoS implementations for different stream types, thereby limiting the increase in system complexity
3Speed
If layer 2 stream transmission is implemented, then the transmission speed is improved, but the QoS guarantee mechanism is lacking
Solution Approach 1:
The patent merges the advantages of layer 2 transmission (high speed) with AVB QoS mechanisms by transmitting SOME/IP streams as AVB layer 2 frames. This combination maintains the speed benefits of direct layer 2 communication while incorporating AVB's standardized QoS guarantee mechanisms, thus resolving the contradiction between speed and reliability
Data Source
AI summary
A method for processing a SOME/IP stream through interworking with Audio Video Bridging (AVB) in a server includes determining a transmission scheme for the SOME/IP stream through a SOME/IP service discovery procedure and generating an InitialEvent message and transmitting the generated InitialEvent message to a client according to the determined transmission scheme. If the determined transmission scheme is L2-Frame, the SOME/IP stream is transmitted through a layer 2 of AVB. Therefore, a SOME/IP stream, the QoS of which is guaranteed through interworking with AVB, may be provided.