A data scheduling transmission method supporting a time-triggered mechanism in an fc switch

A time-triggered and data scheduling technology, applied in the field of communication, can solve problems such as inability to guarantee real-time performance, and achieve the effect of reducing comprehensive complexity, high bandwidth, and clear communication interface

Active Publication Date: 2018-04-17
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Problems solved by technology

[0003] Aiming at the shortcomings that the traditional fiber channel network is driven by event triggering and real-time performance cannot be guaranteed, the present invention provides a data scheduling transmission method that supports a time-triggered mechanism in a fiber channel network switch, and aims at the characteristics of real-time data transmission. Improvements have been made to increase the virtual channel strategy, thereby providing real-time data transmission capabilities. The relevant improvements meet the requirements of the Fiber Channel series protocol specifications, and realize the communication functions required by the application of avionics systems

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  • A data scheduling transmission method supporting a time-triggered mechanism in an fc switch
  • A data scheduling transmission method supporting a time-triggered mechanism in an fc switch
  • A data scheduling transmission method supporting a time-triggered mechanism in an fc switch

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Embodiment Construction

[0026] Below according to embodiment the present invention is described in further detail:

[0027] The traditional fiber channel switching mechanism supports event-triggered data exchange and transmission, which has poor real-time performance. The present invention adopts a time-triggered mechanism and improves the design of the traditional scheduler, thereby meeting the requirement of real-time data exchange and transmission for delay determinism.

[0028] The basic idea of ​​the present invention is: the network generation configuration loading tool configures and loads all ports of the switch, when the port receives time-triggered data, puts it into the port buffer, and queries the configuration table according to the virtual link number of the data frame, thereby Its time parameters are analyzed and verified. Illegal frames will be discarded, and legal data frames will generate scheduling applications. After the communication scheduler receives the time-triggered data fram...

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Abstract

The invention discloses a data scheduling transmission method supporting a time-triggered mechanism in an FC switch. Whether the frame is time-triggered data or event-triggered data, if it is time-triggered data, it will enter the time-triggered buffer; 3. After the time-triggered data enters the time-triggered buffer, query the message cycle and time offset according to the virtual link number, and according to the current global time Judging the legality of the data frame, if it is legal, put the data frame into the port buffer and send a scheduling application to the scheduler; 4. The scheduler responds to the scheduling request within the specified time; 5. After the scheduling is successful, the switch connects to the cross switch and completes the data Exchange transmission. The invention satisfies the requirements of high bandwidth and real-time communication transmission in the aircraft avionics system.

Description

technical field [0001] The invention relates to the technical field of communication, and proposes a design method for supporting time-triggered data frame scheduling exchange in a fiber channel network switch. technical background [0002] Network systems are the backbone of modern avionics systems. At present, the backbone switching network is designed with the idea of ​​event triggering. The real-time performance cannot meet the needs of data transmission of key subsystems at the same time, which leads to the problem of too many types of buses in the aircraft. The fiber channel network based on event triggering has high comprehensive network complexity. The disadvantage of difficulty is that the faults that occur are often difficult to locate. Contents of the invention [0003] Aiming at the shortcomings that the traditional fiber channel network is driven by event triggering and real-time performance cannot be guaranteed, the present invention provides a data scheduli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/931H04B10/07
Inventor 郭骏徐晓飞曹晨崔亮
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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