International Conference on Electronics, Information and Communication Engineering (EICE 2012)
148 Study of Double Scheduling for Fieldbus Based on IEEE802.15.3A Standard
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The wireless fieldbus system model based on IEEE802.15.3a standard is established, and double scheduling mechanism for the wireless fieldbus system is present in this paper. The mechanism makes use of not only static scheduling policy but also dynamic scheduling policy. The scheduling and optimizing layer is introduced on top of MAC layer based on IEEE802.15.3a standard, and designed for dynamic optimizing to communication task at unstable wireless channel. At the same time, scheduling mechanism on the user layer is improved for adapting to characteristics of wireless communication. An application based on the presented model is evaluated. It solved problem of wireless communication on fieldbus system in part.