A scheduling method for time-triggered communication hybrid data transmission based on virtual links

A time-triggered, virtual link technology, applied in the direction of data exchange through path configuration, mixed transportation, data exchange network, etc., can solve the problems of low bandwidth utilization, increase design complexity, and reduce the real-time performance of TT communication. It achieves the effects of simple indexing method, high data cache access efficiency, and improved bandwidth utilization

Active Publication Date: 2020-06-30
XIAN MICROELECTRONICS TECH INST
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Problems solved by technology

Among them, method (1) does not have a high utilization rate of bandwidth; method (2) will increase design complexity and reduce network communication reliability by adding other mechanisms to ensure communication reliability due to incomplete ET messages in the network; Method (3) will reduce the real-time performance of TT communication

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  • A scheduling method for time-triggered communication hybrid data transmission based on virtual links
  • A scheduling method for time-triggered communication hybrid data transmission based on virtual links
  • A scheduling method for time-triggered communication hybrid data transmission based on virtual links

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] see figure 1 , the present invention includes a time-triggered communication virtual link configuration table 1, an event-triggered communication virtual link configuration table 2, a time slot calculation and time slot timer module 3, a sending buffer 4 and a sending scheduling control module 5, and a time-triggered communication virtual link The enabling signal 10 of each TT virtual link in the road configuration table 1 and the time information of the communication time slot are sent to the time slot calculation and the time slot timer module 3, and the time trigger communication virtual link configuration table 1 will TT(Time Triggered , TT) the TT virtual link configuration table and the internal interconnection signal 7 of the sending scheduling module are sent to the sending scheduling control module 5, and the event-triggered communication virtual link c...

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Abstract

The invention discloses a virtual link-based time-triggered communication blended data sending scheduling method. A time slot calculation and time slot timer device module adopts a parallel timing and calculation structure to achieve calculation and generation of time slot sending signals of multiple TT communication virtual links and work of a time slot timer, and therefore the data load state of physical links can be monitored in real time only through two groups of signals; a sending scheduling control module fills ET data frames in the physical links more effectively through index comparison of the ET frames while sending of TT data frames is not influenced, and therefore the bandwidth utilization rate is increased; and a time-triggered communication virtual link configuration table and an event-triggered communication virtual link configuration table are arranged, and therefore in the sending process of the TT data frames and the ET data frames, the indexing mode is simple, and the data cache access efficiency is high.

Description

technical field [0001] The invention belongs to the field of scheduling multiple communication protocol sending ports for time-triggered mixed communication, and in particular relates to a time-triggered communication mixed data sending scheduling method based on a virtual link. Background technique [0002] With the rapid progress of communication technology, the application of Ethernet technology in the field of industrial control and aerospace has made substantial progress. Most of the application methods are adaptively transformed on the basis of IEEE802.3 standard Ethernet, so that Ethernet technology can adapt to the application requirements of safety-critical environments such as industrial control and aerospace. Time Triggered Ethernet (Time Triggered Ethernet, TTE) is formed on the basis of IEEE802.3 standard Ethernet communication protocol by adding technologies such as distributed network clock synchronization, time-triggered communication, event-triggered communi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L12/64H04L12/24H04L12/26
CPCH04L12/40H04L12/4015H04L12/6418H04L41/0803H04L43/00
Inventor 唐金锋刘露徐丹妮郝淼
Owner XIAN MICROELECTRONICS TECH INST
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