Bus Virtualization Communication Method

Abstract

The invention discloses a bus virtualization communication method, which is based on DDS middleware. The method includes the following steps: step 1, establish a communication network topology diagram according to the communication requirements of the virtual bus; step 2, according to the communication network topology The figure requires to set up a data sharing network by the DDS middleware; step 3, transmit the virtual simulation data by the DDS middleware "publish-subscribe" mode; the method is based on the DDS middleware, and is designed for the virtualization of the universal serial bus of the flight control computer Improved support.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a bus virtualization communication method. Background technique [0002] The bus communication method virtualization technology is based on a certain bus to send or receive data, and perform corresponding bus protocol processing to realize the virtualization of the target bus data transmission. The network-based bus virtualization technology is to process the data to be sent or received by the corresponding network protocol, complete the data transmission through the network, and realize the virtualization of bus data transmission. [0003] Existing bus virtualization technology focuses on analyzing two commonly used virtualization technologies: one is network-based bus communication virtualization technology, and the other is reflective memory-based bus communication virtualization technology. [0004] The bus communication virtualization technology based on reflective me...

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Problems solved by technology

[0005] The disadvantages of this method include: (1) reflective memory cards need to be purchased, and optical cables need to be used to connect each host computer, resulting in the limitation of the virtual development environment and the increase of virtual development costs; (2) the platform cannot directly communicate with the real reflective memory card For communication, data transmission needs to be performed through the API functions provided by Windows, and corresponding address configuration tables need to be established, thus increasing the complexity of virtualization design

[0007] The disadvantages of this method include: (1) Only point-to-point data transmission can be realized. If this communication method is used for bus virtualization design, the simulation software must send all data packets to each node, which will inevitably cause network congestion. , leading to uncertainty in data transmission, resulting in an increase in data transmission delay, unable to meet the needs of reliable data transmission

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