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A Recovery Algorithm for Self-Stabilizing communication protocols

Journal of Systems Engineering and Electronics 2000年第1期11卷 38-46页

作者： Li Layuan & Li Chunlin (Department of Computer Science & Technology, Wuhan nansportation University, 430063, P. R. China) Department of Computer Science & Technology Wuhan Transportation University 430063 P. R. China

This paper presents a recovery algorithm for self-stabilizing communication protocols. It first describes some concepts and a formal description method for the algorithm. Then it proposes the algorithm procedures, proves its correctness and analyses its complexity. Finally, it also verifies the availability and efficiency of the algorithm by illustrating an example protocol with multi-processes.

关键词： Computer networks communication protocols Recovery algorithm Self-stabilization Multimedia communication networks.

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The Algorithms for Achieving Global States and Self-Stabilization for communication protocols

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Journal of Systems Engineering and Electronics 1999年第4期10卷 34-41页

作者： Li Layuan & Li Chunlin(Department of Computer Science & Engineering. Wuhan Transportation University,430063,P . R. China) Department of Computer Science & Engineering. Wuhan Transportation University 430063. P. R. China

This paper discusses the algorithms for achieving global states and self-stabilizationfor communication protocols. It first describes a primary algorithm including its suitability forachieving global states and limitation of self-stabilization for communication protocols, and thenpresents an improved algorithm that can be suitable to achieve global states and can be also usedto self-stabilizing communication protocols. Filially, it gives the proof of correctness and analysis ofcomplexity of the improved algorithm, and verifies its availability and efficiency by illustrating anexample protocol.

关键词： communication protocols Algorithm for achieving global states Self-stabilization,Computer networks Multimedia communication networks.

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Efficient Three-Party Quantum Secret Sharing with Single Photons

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Chinese Physics Letters 2007年第8期24卷 2181-2184页

作者：周萍李熙涵邓富国周宏余 Key Laboratory of Beam Technology and Material Modification of Ministry of Education Beijing Normal University Beijing 100875 Institute of Low Energy Nuclear Physics and Department of Material Science and Engineering Beijing Normal University Beijing 100875 Beijing Radiation Center Beijing 100875

A scheme for three-party quantum secret sharing of a private key is presented with single photons. The agent Bob first prepares a sequence of single photons with two biased bases and then sends them to the boss Alice who checks the security of the transmission with measurements and produces some decoy photons by rearranging the orders of some sample photons. Alice encodes her bits with two unitary operations on the photons and then sends them to the other agent. The security of this scheme is equivalent to that in the modified Bennett Brassard 1984 quantum key distribution protocol. Moreover, each photon can carry one bit of the private key and the intrinsic efficiency for qubits and the total efficiency both approach the maximal value 100% when the number of the bits in the key is very large.

关键词： PODOLSKY-ROSEN PAIRS HORNE-ZEILINGER STATES communication protocols ENTANGLED STATES BELL STATES INFORMATION NETWORK CRYPTOGRAPHY SCHEME

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A novel hybrid cybersecurity scheme against false data injection attacks in automated power systems

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Protection and Control of Modern Power Systems 2023年第3期8卷 1-15页

作者： Shahbaz Hussain S.M.Suhail Hussain Marziyeh Hemmati Atif Iqbal Rashid Alammari Stefano Zanero Enrico Ragaini Giambattista Gruosso Department of Electrical Engineering Qatar UniversityDohaQatar Dipartimento di Elettronica Informazione e BioingegneriaPolitecnico di MilanoMilanItaly Department of Electrical Engineering King Fahd University of Petroleum and Minerals(KFUPM)DhahranSaudi Arabia Interdisciplinary Research Center for Renewable Energy and Power Systems(IRC-REPS) King Fahd University of Petroleum and Minerals(KFUPM)DhahranSaudi Arabia

The conventional power systems are evolving as smart *** recent times cyberattacks on smart grids have been *** different attacks,False Data Injection(FDI)is considered as an emerging threat that has significant *** exploiting the vulnerabilities of IEC 61850 Generic Object-Oriented Substation Events(GOOSE)and Sam-pled Values(SV)attackers can launch different FDI *** this paper,a real-time set up capable of simulating FDI on GOOSE and SV protocols is developed to evaluate the impact of such attacks on power *** 62351 stipulates cybersecurity guidelines for GOOSE and SV,but only at communication or Information Technology(IT)*** there is a need to develop a holistic security both at IT and Operation Technology(OT)*** this regard,a novel sequence content resolver-based hybrid security scheme suitable to tackle FDI attacks on GOOSE and SV is ***,the computational performance of the proposed hybrid security scheme is presented to demonstrate its applicability to the time critical GOOSE and SV protocols.

关键词： Cyberattacks False data injection Real time digital simulation IEC 61850 communication protocols Control authority Countermeasures

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Design and Implementation of a Wearable Body Area Sensor Network for Distributed FES System

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Chinese Journal of Biomedical Engineering(English Edition) 2014年第4期23卷 165-172,179页

作者： XIE Yong-ji LIU Xiao-xuan QU Hong-en LAN Ning School of Biomedical Engineering Shanghai Jiao Tong University

A wearable body area sensor network(WBASN) was designed and implemented to monitor movement information of stroke patients in real time. The sensor system was combined with a previously developed distributed functional electrical stimulation(d FES) system, which is a promising technology for motor rehabilitation of stroke patients. Movement information could be useful in outcome assessment of rehabilitation, or for closed-loop adaptive stimulation during rehabilitation. In addition,a short-latency, low-power communication protocol was developed to meet the clinical requirements of energy efficiency and high rate of data feed-through. The prototype of the WBASN was tested in preliminary human experiments. Experimental results demonstrate the feasibility of the proposed wearable body area sensor network in monitoring arm movements on healthy subjects.

关键词： stroke rehabilitation wearable body area sensor network (WBASN) sensor network distributed functional electrical stimulation (dFES) communication protocols

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Design of Serial communication and Data Processing Platform Based on Visual Basic 6.0

Design of Serial Communication and Data Processing Platform ...

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2011 International Symposium on Computer Science and Society

作者： Lili Xie Dazhen Cai Guancheng Xu Colleague of Automation Northwestern Polytechnical University

In order to meet the requirements of higher and higher request of real-time data transmission between inferior devices and superior devices in industry, a new serial communication platform based on Visual Basic 6.0 and RS-232 standard is proposed. A set of reasonable communication procedure is designed, which has satisfied the industry operation timeliness and data prompt refurbishing request. The test results have indicated that the design has a strong significance on practical engineering and can apply in the aircraft breaking system.

关键词： Serial communication Visual Basic 6.0 communication protocols

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Design ＆ Implementation of Data communication Server in Farming Machinery Supervision System

Design ＆ Implementation of Data Communication Server in Far...

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亚洲精细农业与计算机农业应用联合大会

作者： LIU Yongsheng 1 2 CHENG Liping 2 CHEN Tianen 2 YAO Guangqiang 2 1College of Information Engineering Capital Normal University Beijing 100037 China 2National Engineering Research Center for Information Technology in Agriculture Beijing 100097 China

In order to supervise the working process of the remote farming machinery on a large scale, it is necessary to deal with the real-time data such as oil consumption, speed and location coordinates of many farming machines effectively. Because of the following reasons, the data communication server which takes the charge of data processing and communicating has always been the performance bottleneck of the farming machinery supervision system. The first reason is that the amount of real-time data is large and the second reason is that the processing of real-time data must be in time. This paper uses the object-oriented programming method to design and implement a data communication server which is based on the sockets communication, thread pool and I/O multiplexing. In this paper, the multi-connection TCP communication and the high-speed concurrency processing of large amount of real-time data are subtly resolved. The circular queue data structure, the multiple thread technology and I/O multiplexing are used in the server to accept, process and store the farming machines’ real-time data. The constant thread pool and temporary thread pool are used to provide data for monitoring centre which are used to display the farming machines’ working status and the result of statistical analysis. The expansive communication protocols of application layer are designed in this paper to increase the ability of the communication among different models in the farming machinery supervision system. The class hierarchy is built up to increase the ability of code reuse. The data communication server as a primary part of the farming machinery supervision system has been tested in Beijing Xing Lu He Farming Machine Server Company. The result indicates that the server’s stability and the efficiency of the real-time data processing can meet the requirement to supervise the working process of the remote farming machinery on a large scale.

关键词： Data communication server Thread pool I/O Multiplexing Sockets communication protocols

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Special Equipment Railway Transportation communication Net Based on the Field Bus

Special Equipment Railway Transportation Communication Net B...

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2007 8th International Conference on Electronic Measurement & Instruments（ICEMI’2007）

作者： Xue Xian 1 Zhang Shiying 2 Chen Jiazhao 2 1 The Second Artillery Equipment Research Institute Peking 100085 China 2 The Second Artillery Engineering College 203 Teaching and Researching Room

The special equipment railway transportation communication net based on the field bus that the paper issued, aimed at the characteristic of railway transportation, such as simple structure, distinct layer, reducing data intermediate link as far as possible in network flows , reducing the cost of entire system, increasing flexibility, reliability and the fast communication. According to this principle, the paper only adopted OSI model 1, 2 and 7 layers, and created a user layer. The structures of the transportation communication net based on the field bus are physical layer, data linking layer, application layer and user layer. On the foundation of communication net layers, we designed the communication net communication protocols based on the field bus. We set monitoring unit logic number in the data token defined in transportation communication net protocol, realized the random net of transportation task at random. RS-485 half-duplex communication net shift circuit is designed and the net experiment is as well completed.

关键词： Field bus half-duplex communication communication protocols random net

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