Design And Implementation Of Queue Scheduling Management And Bus Control In Private Switch

In recent years, aerospace technology has experienced a rapid development. Various research institutions are increasingly aware that the network switch will become the mainstream of aerospace communications technology development. However, requirements of aerospace switch have many differences with ordinary one, so the design methodology of aerospace switch shows different characteristics. In order to fulfil the special needs of the project design, this dissertation combines project " Design and Implementation of Private Packet Switch " undertaken by our laboratory, and through the detailed design, it also achieves the implementation of a queue scheduling management and bus control function modules.Firstly, this dissertation introduces the research background and development of key technology in aerospace switching. Secondly, according to the special design requirements of " Private Packet Switch " and current aerospace packet switching development, it completes module division and design. Thirdly, it elaborates on the ideas and implementation of " Private Packet Switch " queue scheduling management and bus control design. Queue scheduling management module uses fixed-length buffer caching strategies, mainly to complete the received data frame transmission and scheduling, cache management, frame-information management, and other functions. Bus control module completes data frames' bus moving operation. Finally, simulation analyses are conducted on each design module, and board-level test results are given. At the same time, it also analyses problems encountered during the research. The design research has successfully passed the board-level testing, proving the correctness of modular design, and thereby achieving the desired objectives.