| Fieldbus网络通信模型中的MAC层 |
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| 引用本文： | 赵海. Fieldbus网络通信模型中的MAC层[J]. 东北大学学报(自然科学版), 1996, 17(4): 434-439 |
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| 作者姓名： | 赵海 |
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| 作者单位： | 东北大学计算机科学与工程系 |
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| 基金项目： | 国家“八六三”高技术资助 |
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| 摘 要： | 针对现场总线网络模型的实时特征，讨论了其ＭＡＣ层中的通信协议问题，包括有ＦＢＣＯＳ／ＭＡＣ协议族的优先决策、实时虚电路和预约协议；ＦＢＣＬＳ／ＭＡＣ协议族的ＭＬＦ窗口协议和虚时间ＣＳＭＡ协议．在此基础上，概括和推广了基于ＭＬＦ窗口协议既支持ＦＢＣＯＳ又支持ＦＢＣＬＳ的统一窗口协议．不但完成了对ＦＢＣＯＳ／ＭＡＣ，而且也完成了对ＦＢＣＬＳ／ＭＡＣ通信协议的实时性、时间确定性和网络开销等通信模型进行了仿真分析，并且给出了数值结果．
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| 关 键 词： | 现场总线网络 MAC层 Fieldbus网络 通信协议 |
Study on MAC Layer in Fieldbus Network |
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| Zhao Hai. Study on MAC Layer in Fieldbus Network[J]. Journal of Northeastern University(Natural Science), 1996, 17(4): 434-439 |
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| Authors: | Zhao Hai |
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| Abstract: | In accordance with the real-time feature of the network models in fieldbus,Problems of MAC layer in the fieldbus network are mainly discussed,which include priority decision, real-time circuit and reservation protocols in FBCOS/MAC,MLF and virtual time CSMA protocols in FBCLS/MAC. According to the results of the research,the general windows protocol based on MLF,which may support either FBCOS or FBCLS,is defined and developed. Real-time,time deterministic and the load/unload ability of FBCOS/MAC and FBCLS/MAC are analyzed and concluded. |
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| Keywords: | fieldbus network MAC layer LANs real-time communication and connections. |
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