Transmission method of 1394B bus communication frame structure of avionics system environment

• Main Author: LIU ZHIQI
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a transmission method of a 1394B bus communication frame structure of an avionics system environment. The method includes: sending an STOF packet by a CC node to notify each RNnode of starting of a current data frame, and sending an asynchronous stream packet by the CC node in a sending time window thereof; sending an STOFRN1 packet by the CC node to notify an RN1 node of reaching of a sending time window; returning ACK1 by the RN1 after receiving the STORN1, and sending an asynchronous stream packet by the RN1 node in the sending time window thereof; sending the STOFRN2 packet by the CC node to notify RN2 of reaching of a sending time window; and continuing similar operation until the data frame ends. According to the method, bus control capability of the CC node can be effectively improved, a bus management function of an application layer is realized, at the same time, the RN nodes do not need timers to control starting of the sending time windows, thus dependence on hardware timer r