The protocol is the foundation of IoT technology, which plays an important role in the IoT device interworking and interoperability. The 5 G wireless communication system provides large-scale NB-IoT terminals access w...The protocol is the foundation of IoT technology, which plays an important role in the IoT device interworking and interoperability. The 5 G wireless communication system provides large-scale NB-IoT terminals access with F-RAN, and the vertical industry applications need support for the device management. As one of the most influential protocol in the IoT application, the oneM2M protocol not only has a complete architecture, but also has an interface with other IoT protocols. Therefore, to bridge the gap between the operator and industrial enterprises, the main contributions of this paper are as follows: Firstly, a general multi-protocol conversion method is proposed based on oneM2M platform where the protocol classification is used in different scenarios. Secondly, the F-RAN architecture of oneM2M platform is designed and implemented with NB-IoT device access. Thirdly, a multiplexing scheme to process the device information is proposed for interworking proxy entity(IPE), which improves the conversion efficiency for different protocols. Finally, the feasibility and efficiency of the scheme are verified.展开更多
In order to adapt to the construction needs of the smart grid, smart substation need to solve the problem of protocol conversion between the conventional non-standardized condition monitoring equipment and the standar...In order to adapt to the construction needs of the smart grid, smart substation need to solve the problem of protocol conversion between the conventional non-standardized condition monitoring equipment and the standardized monitoring system. This paper proposed a realization method of conversion method between Modbus and IEC61850. Object-oriented technology is used for information model on Modbus. After the analysis of IEC61850 and MMS information and service model, to establish the model mapping relationship between IEC61850, MMS and Modbus based on the principle of minimum information point which is one to one correspondence. Combined with the implementation of SISCO MMS-EASE LITE software development kit programming, giving a realization method using QT programming techniques based on the mapping model. Finally, the establishment the interval controller as an example of protocol scheme verifies the correctness and the feasibility of protocol conversion method.展开更多
This paper proposes an improved non-repudiation protocol after pointing out two attacks on an existing non-repudiation protocol.To analyze the improved protocol,it also proposes an extension of Kailar logic.Using the ...This paper proposes an improved non-repudiation protocol after pointing out two attacks on an existing non-repudiation protocol.To analyze the improved protocol,it also proposes an extension of Kailar logic.Using the extended Kailar logic,the security analysis of the improved prototocol has been presented.展开更多
协议转换通常用于解决不同协议之间的数据交互问题,它的本质是寻找不同协议字段之间的映射关系。传统的协议转换方法存在以下缺点:转换大多是在特定协议的基础上设计的,因而这些转换是静态的,灵活性较差,不适用于多协议转换的场景;一旦...协议转换通常用于解决不同协议之间的数据交互问题,它的本质是寻找不同协议字段之间的映射关系。传统的协议转换方法存在以下缺点:转换大多是在特定协议的基础上设计的,因而这些转换是静态的,灵活性较差,不适用于多协议转换的场景;一旦协议发生改变,就需要再次分析协议的结构和字段语义以重新构建字段之间的映射关系,从而产生指数级的工作量,降低了协议转换的效率。因此,提出基于语义相似度的通用协议转换方法,旨在通过智能的方法发掘字段间的映射关系,进而提高协议转换的效率。首先,通过BERT(Bidirectional Encoder Representations from Transformers)模型分类协议字段,并排除“不应该”存在映射关系的字段;其次,通过计算字段之间的语义相似度,推理字段之间的映射关系,进而构建字段映射表;最后,提出基于语义相似度的通用协议转换框架,并定义相关协议以进行验证。仿真实验结果表明:所提方法的字段分类精准率达到了94.44%;映射关系识别精准率达到了90.70%,相较于基于知识抽取的方法提高了13.93%。以上结果验证了所提方法的有可行性,该方法可以快速识别不同协议字段之间的映射关系,适用于无人协同中多协议转换的场景。展开更多
针对大型商业建筑中Modbus(Modicon Communication Bus,源自施耐德电气旗下Modicon公司开发的通信总线)、BACnet(Building Automation and Control Networks,楼宇自动化与控制网络)和KNX(Konnex,源于欧洲住宅与建筑自动化标准,整合EIB、...针对大型商业建筑中Modbus(Modicon Communication Bus,源自施耐德电气旗下Modicon公司开发的通信总线)、BACnet(Building Automation and Control Networks,楼宇自动化与控制网络)和KNX(Konnex,源于欧洲住宅与建筑自动化标准,整合EIB、BatiBus等协议)等异构协议并存导致的设备管理效率低下问题,探索高效的多协议融合与集成方案。采用分布式协议转换网关技术,设计轻量级数据解析算法和动态路由优化策略,构建实验平台对不同集成方案进行性能测试与对比分析。优化后的系统在单设备控制场景下响应时间降低75%,温度控制精度提升至±0.2℃,能耗预测准确率达93%,系统稳定性保持在99.98%。本文提出的多协议融合方案显著提升了大型商业建筑机电系统的运行效率和可靠性,为建筑智能化升级提供了可行的技术路径。展开更多
基金supported by the Fundamental Research Funds for the Central Universities(2019PTB-017)
文摘The protocol is the foundation of IoT technology, which plays an important role in the IoT device interworking and interoperability. The 5 G wireless communication system provides large-scale NB-IoT terminals access with F-RAN, and the vertical industry applications need support for the device management. As one of the most influential protocol in the IoT application, the oneM2M protocol not only has a complete architecture, but also has an interface with other IoT protocols. Therefore, to bridge the gap between the operator and industrial enterprises, the main contributions of this paper are as follows: Firstly, a general multi-protocol conversion method is proposed based on oneM2M platform where the protocol classification is used in different scenarios. Secondly, the F-RAN architecture of oneM2M platform is designed and implemented with NB-IoT device access. Thirdly, a multiplexing scheme to process the device information is proposed for interworking proxy entity(IPE), which improves the conversion efficiency for different protocols. Finally, the feasibility and efficiency of the scheme are verified.
文摘In order to adapt to the construction needs of the smart grid, smart substation need to solve the problem of protocol conversion between the conventional non-standardized condition monitoring equipment and the standardized monitoring system. This paper proposed a realization method of conversion method between Modbus and IEC61850. Object-oriented technology is used for information model on Modbus. After the analysis of IEC61850 and MMS information and service model, to establish the model mapping relationship between IEC61850, MMS and Modbus based on the principle of minimum information point which is one to one correspondence. Combined with the implementation of SISCO MMS-EASE LITE software development kit programming, giving a realization method using QT programming techniques based on the mapping model. Finally, the establishment the interval controller as an example of protocol scheme verifies the correctness and the feasibility of protocol conversion method.
基金Supported by the National Natural Science Foundation of China(90104005)the Doctoral Science Foundation of Ministry of Edu cation(20020486046)
文摘This paper proposes an improved non-repudiation protocol after pointing out two attacks on an existing non-repudiation protocol.To analyze the improved protocol,it also proposes an extension of Kailar logic.Using the extended Kailar logic,the security analysis of the improved prototocol has been presented.
文摘协议转换通常用于解决不同协议之间的数据交互问题,它的本质是寻找不同协议字段之间的映射关系。传统的协议转换方法存在以下缺点:转换大多是在特定协议的基础上设计的,因而这些转换是静态的,灵活性较差,不适用于多协议转换的场景;一旦协议发生改变,就需要再次分析协议的结构和字段语义以重新构建字段之间的映射关系,从而产生指数级的工作量,降低了协议转换的效率。因此,提出基于语义相似度的通用协议转换方法,旨在通过智能的方法发掘字段间的映射关系,进而提高协议转换的效率。首先,通过BERT(Bidirectional Encoder Representations from Transformers)模型分类协议字段,并排除“不应该”存在映射关系的字段;其次,通过计算字段之间的语义相似度,推理字段之间的映射关系,进而构建字段映射表;最后,提出基于语义相似度的通用协议转换框架,并定义相关协议以进行验证。仿真实验结果表明:所提方法的字段分类精准率达到了94.44%;映射关系识别精准率达到了90.70%,相较于基于知识抽取的方法提高了13.93%。以上结果验证了所提方法的有可行性,该方法可以快速识别不同协议字段之间的映射关系,适用于无人协同中多协议转换的场景。
文摘针对大型商业建筑中Modbus(Modicon Communication Bus,源自施耐德电气旗下Modicon公司开发的通信总线)、BACnet(Building Automation and Control Networks,楼宇自动化与控制网络)和KNX(Konnex,源于欧洲住宅与建筑自动化标准,整合EIB、BatiBus等协议)等异构协议并存导致的设备管理效率低下问题,探索高效的多协议融合与集成方案。采用分布式协议转换网关技术,设计轻量级数据解析算法和动态路由优化策略,构建实验平台对不同集成方案进行性能测试与对比分析。优化后的系统在单设备控制场景下响应时间降低75%,温度控制精度提升至±0.2℃,能耗预测准确率达93%,系统稳定性保持在99.98%。本文提出的多协议融合方案显著提升了大型商业建筑机电系统的运行效率和可靠性,为建筑智能化升级提供了可行的技术路径。
