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Hybrid scheduling method for tte network, tte network terminal

A hybrid scheduling and network technology, applied in advanced technology, climate sustainability, sustainable communication technology, etc., can solve the problems of missed reception time window, excessive technical delay, and TT message sending exceeding, so as to ensure orderly high-quality real-time effects

Active Publication Date: 2022-05-20
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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  • Hybrid scheduling method for tte network, tte network terminal
  • Hybrid scheduling method for tte network, tte network terminal
  • Hybrid scheduling method for tte network, 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] like 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] like 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 core to c...

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Abstract

The invention discloses a hybrid scheduling method for a TTE network. The TTE network is provided with a TT time slice and an RC_BE time slice, and the RC_BE time slice is used for scheduling RC frames and BE frames; the TT time slice is provided with a starting time point, 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, and send TT frames that have been successfully scheduled. The invention solves the conflict of MAC layer transmission scheduling when the RC_BE time slice is switched to the critical domain of the TT time slice, reduces the transmission time delay of TT messages, and ensures the high real-time requirement of TT message scheduling.

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 Patents(China)
IPC IPC(8): H04L47/50H04L47/52H04L47/6275
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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