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Line length adaptive time trigger scheduling method and device

A time-triggered, scheduling method technology, applied in the field of Ethernet, can solve problems such as failure of TT scheduling strategy, uncertainty of data packet transmission time, and damage to the real-time performance of the network system, achieving the effect of flexible network deployment

Active Publication Date: 2021-05-25
TSINGHUA UNIV
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Problems solved by technology

However, in the actual deployment of the network, the distance between network nodes is inevitably different, and the types of network transmission media used are also different. This will undoubtedly bring great uncertainty in the transmission time of data packets on the network line, and may cause Causes the calculated TT scheduling strategy to fail, destroying the real-time performance of the entire network system

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  • Line length adaptive time trigger scheduling method and device
  • Line length adaptive time trigger scheduling method and device
  • Line length adaptive time trigger scheduling method and device

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] figure 1 It is a flowchart of a line length adaptive time-triggered scheduling method according to an embodiment of the present invention; as figure 1 As shown, the line length adaptive time-triggered scheduling method includes:

[0035] S110, for each network node, obtain the line transmission delay between the network node and its adjacent network nodes, wherein the total line delay between any two adjacent network nodes in the deployed network is le...

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Abstract

The present invention discloses a line length adaptive time-triggered scheduling method and device, wherein the method includes: for each network node, acquiring the line transmission delay between the network node and its adjacent network nodes, wherein the deployed The total line delay between any two adjacent network nodes in the network is less than the preset line transmission delay threshold; determine the time-triggered scheduling strategy according to the obtained line transmission delay between any two adjacent network nodes; The time-triggered scheduling policy is sent to the switch port of the network node to schedule data packets between the network node and its adjacent network nodes.

Description

technical field [0001] The invention relates to the field of Ethernet, in particular to a line length adaptive time trigger scheduling method and device. Background technique [0002] With the continuous development of network technology, more and more fields start to use the network. In the fields of aviation, railway transportation, industrial control, etc., it is required that data information can reach the destination node according to the specified time, otherwise it may cause disastrous consequences such as loss of control. Traditional Ethernet uses carrier sense multiple access technology with collision detection, which is essentially a contention-based media access control protocol, which cannot meet the requirements of low-latency, low-jitter, and highly reliable real-time transmission. Among the many solutions to realize the real-time Ethernet required by the industry, the time-triggered Ethernet technology (Time-triggered Ethernet, referred to as TTEthernet) inve...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/407H04L12/26
CPCH04L12/407H04L43/0864
Inventor 万海李宗辉于庆涵赵曦滨陈威行
Owner TSINGHUA UNIV
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