Traffic scheduling method for EtherCAT and time sensitive network

A traffic scheduling, time-sensitive technology, applied in data exchange networks, digital transmission systems, electrical components, etc., to solve the problems of lack of analysis of various traffic, inability to change network segment configuration, and lack of reserved bandwidth allocation strategies.

Inactive Publication Date: 2020-07-07
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0004] In existing EtherCAT / TSN network solutions, network adapters are usually used to convert EtherCAT devices into TSN talker / listener devices. By manually configuring the VLAN ID of the aggregation port and the VLAN priority of EtherCAT traffic, the entire network runs on a pre-set In this mode, this method lacks the analysis of various traffic in the network segment, cannot change the configuration of the network segment according to the change of traffic, and lacks the allocation strategy for the reserved bandwidth of various traffic in the network segment

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  • Traffic scheduling method for EtherCAT and time sensitive network
  • Traffic scheduling method for EtherCAT and time sensitive network
  • Traffic scheduling method for EtherCAT and time sensitive network

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Embodiment Construction

[0071] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0072]Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should ...

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Abstract

The invention relates to a flow scheduling method for an EtherCAT and a time sensitive network. The flow scheduling method belongs to the technical field of industrial networks, and comprises the steps of: analyzing periodicity and time delay of EtherCAT flow and non-EtherCAT flow in a network, and allocating priorities and TSN flow queues according to characteristics; then, allocating schedulingtime slots to the queues mapped by the EhterCAT flow, and generating a scheduling table; and finally, dividing the non-EtherCAT flow into SR flow, proposing an optimization model by taking the maximumreserved bandwidth in IEEE 802.1 Qat as a constraint condition, solving the optimization model to obtain an optimal idle slope, configuring a reserved bandwidth by utilizing the optimal idle slope, and shortening response time of CBS scheduling, so that reasonable allocation of network resources is realized. Meanwhile, various flow allocation and flow real-time scheduling in the EtherCAT/TSN network can be realized.

Description

technical field [0001] The invention belongs to the technical field of industrial networks, and relates to a flow scheduling method for EtherCAT and time-sensitive networks. Background technique [0002] Time Sensitive Networking (TSN) refers to a set of switch protocol standards being developed by the IEEE 802.1 task group. It is mainly an extension of the existing IEEE 802.1Q virtual local area network, and some new traffic scheduling is proposed on this basis. mechanism and clock synchronization mechanism. Utilizing TSN can realize a reasonable transmission for different network segments and different traffic types in industrial network control applications, and can meet the occasions with strict delay time requirements. [0003] Ethernet for Control Automation Technology (EtherCAT) is a real-time industrial Ethernet fieldbus protocol used in the field of factory automation and process automation, and is a component of the international standards IEC 61158 and IEC 61784 ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/863H04L12/927H04L12/911H04L12/851H04L47/80
CPCH04L47/6215H04L47/805H04L47/72H04L47/2433
Inventor 谢昊飞郭小沨刘代雄罗云霄徐国超张量
Owner CHONGQING UNIV OF POSTS & TELECOMM
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