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Mixed scheduling method used for TTE network and TTE network terminal

A hybrid scheduling and network technology, applied in the direction of data exchange network, advanced technology, digital transmission system, etc., can solve the problems of missing the receiving time window, excessive technical delay, and exceeding the transmission of TT messages, etc., to ensure orderliness Effect

Active Publication Date: 2019-04-05
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Problems solved by technology

[0006] Due to the different priorities, data frames with three different real-time levels will inevitably have a certain technical delay during the time slice switching process. If the technical delay is too large, it will cause the TT message to be sent beyond the corresponding time slice. end will miss the corresponding receiving time window and be filtered out

Method used

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  • Mixed scheduling method used for TTE network and TTE network terminal
  • Mixed scheduling method used for TTE network and TTE network terminal
  • Mixed scheduling method used for TTE network and TTE network terminal

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as Figure 4 As shown, a hybrid scheduling method for TTE network, wherein TT time slice and RC_BE time slice are set in the TTE network, and RC_BE time slice is used to schedule RC frames and BE frames; there is a starting time point in the TT time slice , floating time point and end time point; schedule TT frames between the start time point and the floating time point, and send the TT frame after the RC_BE frame being sent on the physical link is completed; between the floating time point and the end time point Stop scheduling TT frames during the interval, and send TT frames that have been successfully scheduled.

[0041] Such as image 3 As shown, the network terminal used to realize the above-mentioned hybrid scheduling method shown in this embodiment adopts the SOC platform based on ZYNQ, and uses the embedded ARM hard cor...

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Abstract

The invention discloses a mixed scheduling method used for TTE network. A TT timeslice and an RC_BE timeslice are arranged in the TTE network, and the RC_BE timeslice is used to schedule RC and BE frames; the TT timeslice is provided with starting, floating and ending time points; the TT frame is scheduled between the starting time point and the floating time point, the TT frame is sent after thatsending of the RC_BE frame which is being sent in a physical link is completed; and TT frame scheduling is stopped between the floating time point and the ending time point, and the TT frame which issucceeded in scheduling is sent. The conflict between sending and scheduling in an MAC layer when the RC_BE timeslice is switched to a critical domain of the TT timeslice can be resolved, transmission time delay of the TT message is reduced, and the TT message is scheduled in high instantaneity.

Description

technical field [0001] The invention relates to a hybrid scheduling method for TTE network and TTE network terminal. Background technique [0002] Time-Triggered Ethernet (Time-Triggered Ethernet, TTE / SAE AS6802) is a time-triggered communication technology in a switched network interconnection environment. The SAE AS6802 standard does not modify the standard Ethernet IEEE802.3 or the AFDX dedicated Ethernet standard. It only enhances the time determinism of Ethernet services through the transformation of the link layer on the basis of the Ethernet protocol, and provides a fixed terminal A service for deterministic message delivery with end-to-end latency and microsecond-level jitter. [0003] According to SAE AS6802 protocol, such as figure 1 As shown, in order to meet different application requirements and scenarios, the TTE network can support data communication with three different real-time levels and security levels, namely time-triggered messages (TT, Time-Triggered...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/863H04L12/865H04L12/873H04L47/52H04L47/6275
CPCH04L47/50H04L47/52H04L47/6275Y02D30/50
Inventor 汪小东谭永亮罗泽雄
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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