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BE data frame pre-scheduling method and device based on TTE protocol

A data frame and pre-scheduling technology, applied in electrical components, wireless communication, etc., can solve the problems of TTE protocol application obstacles, clear scheduling strategies for four data frame types, and no specific implementation methods.

Active Publication Date: 2018-06-29
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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AI Technical Summary

Problems solved by technology

However, in the corresponding standard SAE AS6802, only the synchronization algorithm is described in detail, and the scheduling strategy for the four data frame types (PCF, TT, RC, and BE) is not clear, so that the business data flow only has the characteristics of communication applications, and there is no specific implementation method , becoming the biggest obstacle to the application of the TTE protocol

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  • BE data frame pre-scheduling method and device based on TTE protocol
  • BE data frame pre-scheduling method and device based on TTE protocol
  • BE data frame pre-scheduling method and device based on TTE protocol

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] BE data frame configuration format based on TTE protocol, such as figure 1 As shown, including: time stamp, monitoring, output port, frame length and storage address, the meaning of each field is as follows: time stamp: the time when the BE data frame is stored in the external memory, unit: 2 -16 ns; monitoring: only valid for switches, to determine whether the current frame is monitored and output; output port: only valid for switches, to determine the current frame forwarding output port; frame length: length of BE data frame, unit: byte, length range: 64~ 1518; storage address: the start address of the storage location of the BE data frame in the external memory.

[0014] BE data frame scheduling function block diagram, such as figure 2 As shown, when the BE data frame organization is completed and stored in the external memory, the configuration information of...

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Abstract

The invention relates to a BE data frame pre-scheduling method based on a TTE protocol. A BE data frame memory, a BE data frame configuration FIFO, a BE data frame pre-scheduling module and a multi-service data stream general scheduling module are included; the BE data frame content is stored in the BE data frame memory; the BE data frame configuration information is stored in the BE data frame configuration FIFO; the BE data frame pre-scheduling module perform the pre-scheduling work; and the multi-service data stream general scheduling module starts the BE data frame to send the control state.

Description

technical field [0001] The data of the present invention belongs to airborne communication technology, and relates to a BE (Best-Effort Traffic, best-effort traffic) data frame pre-scheduling method and device based on TTE protocol. Background technique [0002] Time-triggered network TTE supports a variety of business data streams, including: time-triggered and event-triggered, and realizes mixed applications in safety-critical and non-safety-critical fields. However, in the corresponding standard SAE AS6802, only the synchronization algorithm is described in detail, and the scheduling strategy for the four data frame types (PCF, TT, RC, and BE) is not clear, so that the business data flow only has the characteristics of communication applications, and there is no specific implementation method , becoming the biggest application obstacle of the TTE protocol. Contents of the invention [0003] Purpose of the invention: [0004] The present invention establishes the confi...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/0446H04W72/1221
Inventor 何向栋陈长胜刘智武田园白杨张志平
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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