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A Time-Sensitive Network Frame Replication and Elimination and Seamless Redundancy Interconnection Method

A time-sensitive and redundant technology, applied in transmission systems, electrical components, etc., can solve the problems of lack of end systems and forwarding systems, and high cost

Active Publication Date: 2022-04-26
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But here's the problem: (1) it's expensive to build two separate networks for redundant traffic; (2) it requires implementing PRP on the endpoints
Although a redundancy scheme based on frame replication and elimination is provided in a time-sensitive network, there is a lack of detailed elaboration on how the peer system and forwarding system integrate these functions and the interconnection method for other reliability mechanisms that do not support the FRER redundancy mechanism.

Method used

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  • A Time-Sensitive Network Frame Replication and Elimination and Seamless Redundancy Interconnection Method
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  • A Time-Sensitive Network Frame Replication and Elimination and Seamless Redundancy Interconnection Method

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Embodiment

[0036] The present invention uses the highly reliable seamless redundancy protocol (HSR) subnet for industrial applications and the frame replication and elimination mechanism backbone network proposed by the 802.1 working group for the real-time and high reliability requirements of data transmission in the industrial environment as the backbone network. The basic network architecture of the embodiment;

[0037] Such as Figure 1 ~ Figure 4 As shown, the network includes a sending terminal node to generate data sources, but the terminal does not have the time-sensitive network FRER redundancy function, so Switch 0 acts as the proxy of the sending terminal node, converting the data frames sent by the terminal node into FRER network identification The data frame format;

[0038] The FRER backbone network in the network architecture of the embodiment also includes 6 switches (Switch 1, Switch 2, Switch 3, Switch 4, Switch 5, and Switch 6), which are used as time-sensitive networ...

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Abstract

The invention relates to a time-sensitive network frame duplication and elimination and seamless redundant interconnection method, which belongs to the technical field of industrial control. In the method, the redundant label conversion function is added to the output port of the backbone switch adjacent to the HSR ring network, so as to realize the interconnection of different redundancy protocols between the backbone network and the subnet, and ensure the reliability of the entire network. The method is based on the network topology composed of Ethernet-based backbone network and subnet, in which the backbone network switches implement the FRER mechanism, and the subnet implements the HSR mechanism to ensure the network communication reliability of the backbone network and subnet respectively. The conversion module realizes the interconnection of the entire network, thereby ensuring the fault-tolerant performance of the entire network.

Description

technical field [0001] The invention belongs to the technical field of industrial control, and relates to a time-sensitive network reliability mechanism frame replication and elimination (Frame Replication and Elimination for Reliability, FRER) and high-availability seamless redundancy (High-Availability Seamless Redundancy, HSR) interconnection method. Background technique [0002] Ethernet is considered to be the future communication standard for distributed embedded systems in the automotive and industrial fields, but the challenge is that the Ethernet media access control adopts the carrier sense multiple access mechanism with collision detection (CSMA / CD, CarrierSense Multiple Access / Collision Detection), the information transmission delay has unpredictable randomness, and the definite low-latency transmission of Ethernet frames cannot be guaranteed. In 2005, the IEEE 802.1 task group formulated AVB, Ethernet Audio Video Bridge (Ethernet Audio Video Bridge), which is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L69/40
CPCH04L69/06H04L69/08H04L69/40
Inventor 王浩百玉翀王平
Owner CHONGQING UNIV OF POSTS & TELECOMM