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Stochastic programming based multi-arm bandit offloading strategy for internet of things

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Digital Communications and Networks 2023年第5期9卷 1200-1211页

作者： Bin Cao Tingyong Wu Xiang Bai State Key laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing100876China National Key laboratory of Science and Technology on Communications University of Electronic Science and Technology of ChinaChengdu611731China China Electrics Technology Cyber security Co..Ldt Chengdu611731China

In order to solve the high latency of traditional cloud computing and the processing capacity limitation of internet of Things(IoT)users,Multi-access Edge Computing(MEC)migrates computing and storage capabilities from the remote data center to the edge of network,providing users with computation services quickly and *** this paper,we investigate the impact of the randomness caused by the movement of the IoT user on decision-making for offloading,where the connection between the IoT user and the MEC servers is *** uncertainty would be the main obstacle to assign the task ***,if the assigned task cannot match well with the real connection time,a migration(connection time is not enough to process)would be *** order to address the impact of this uncertainty,we formulate the offloading decision as an optimization problem considering the transmission,computation and *** the help of Stochastic Programming(SP),we use the posteriori recourse to compensate for inaccurate ***,in heterogeneous networks,considering multiple candidate MEC servers could be selected simultaneously due to overlapping,we also introduce the Multi-Arm Bandit(MAB)theory for MEC *** extensive simulations validate the improvement and effectiveness of the proposed SP-based Multi-arm bandit Method(SMM)for offloading in terms of reward,cost,energy consumption and *** results showthat SMMcan achieve about 20%improvement compared with the traditional offloading method that does not consider the randomness,and it also outperforms the existing SP/MAB based method for offloading.

关键词： Multi-access computing internet of things Offloading Stochastic programming Multi-arm bandit

Exploiting demand-side heterogeneous flexible resources in risk management of power system frequency

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Science China(Technological Sciences) 2024年第5期67卷 1612-1627页

作者： YAO Yu SONG YongHua YE ChengJin DING Yi ZHAO YuMing College of Electrical Engineering Zhejiang UniversityHangzhou310027China State Key laboratory of internet of Things for Smart City University of MacaoMacao SAR519000China Shenzhen Power Supply Bureau Co. Ltd.Shenzhen518051China

More demand-side flexible resources(DFRs)are participating in the frequency regulation of renewable power systems,whose heterogeneous characteristics have a significant impact on the system frequency ***,selecting suitable DFRs poses a formidable challenge for independent system operators(ISO).In this paper,a reserve allocation methodology for heterogeneous DFRs is proposed to manage the risk of power system ***,a performance curve is developed to describe the cost,capacity,and response speed of ***,a clustering method for multiple distributed DFRs is conducted to calculate the aggregated performance curves and uncertainty ***,the frequency security criterion considering DFRs’performance is constructed,whose linearity makes it can be easily coupled into the system scheduling model and ***,a risk management model for DFRs considering frequency-chance-constraint is proposed to make a trade-off between cost and frequency ***,the model is transformed into mixed integer second-order cone programming(MISOCP)and solved by the commercial *** proposed model is validated by the IEEE 30 and IEEE 118 bus systems.

关键词： demand-side heterogenous flexible resources risk management of power system frequency performance curve aggregation method mixed integer second-order cone programming

A Secure Interaction and Control Method for InterClouds Services

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China Communications 2015年第S2期12卷 132-137页

作者： GAN Jiefu PENG Li LU Yueming China Information security Certification Center School of Information and Communication Engineering Beijing University of Posts and Telecommunications Key laboratory of Trustworthy Distributed Computing and Service (BUPT) Ministry of Education

Inter-clouds services build information bridges over computing clouds so as to provide the convenience for electronic commerce and other information services. However, the interactions between clouds have challenges in information disclosure, services spoofing and information inconsistent. This paper proposes a secure interaction and control method for inter-clouds services, which uses information encryption, digital signature,time logic control means, to protect users' privacy and keep the integrity and consistency of cloud customers' request information, and prevent the spoofing of information requests. The results show that the method could prevent the spoofing well in a stable network environment and improve the security of clouds sessions.

关键词： inter-clouds services encryption signature spoofing

IRS-Aided SWIPT Systems with Power Splitting and Artificial Noise

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China Communications 2022年第4期19卷 108-120页

作者： Baogang Li Fuqiang Si Dongsheng Han Wujing Wu Department of Electronic and Communication Engineering North China Electric Power UniversityBaoding 071003HebeiChina Hebei Key laboratory of Power internet of Things Technology North China Electric Power UniversityBaoding 071003HebeiChina

Intelligent reflecting surface(IRS) is regarded as a promising technology because it can achieve higher passive beamforming gain. In particular, the IRS assisted simultaneous wireless information and power transfer(SWIPT) system can make the information decoding receivers(IDRs) have a higher signal-to-noise ratio(SNR), and the energy harvesting receivers(EHRs) have the guarantee of minimum harvested energy threshold. Motivated by the above,in this paper, we use the power splitting(PS) at the user and introduce artificial noise(AN) into the access point(AP), so that the user in system can harvest energy and decode information simultaneously,further improve the security of user. We jointly optimize the beamforming matrix at AP, the reflection phase shift at IRS and the PS ratio, in order to maximize the user’s achievable secrecy rate, subject to the user’s minimum harvested energy threshold and AP’s transmission power. Due to the introduction of PS ratio, the coupling between variables is increased,and the complexity of the problem is significantly increased. Furthermore, the problem is non-convex, so we propose an efficient algorithm based on Taylor Formula, semi-definite relaxation(SDR) and alternating optimization(AO) to get the solution. Numerical results show that the proposed IRS-SWIPT system with PS and AN achieves significant performance improvement compared with other benchmark scheme.

关键词： intelligent reflecting surface(IRS) passive beamforming power splitting SWIPT

Pfaffian-Type Soliton Solution to a Multi-Component Coupled Ito Equation

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Chinese Physics Letters 2014年第11期31卷 30-34页

作者：陈俊超陈勇冯宝峰朱汉敏 Shanghai Key laboratory of Trustworthy Computing East China Normal University Shanghai 200062 Departm-ent of Mathematics The University of Texas-Pan American Edinburg TX 78541 USA Suzhou Institute of Trade and commerce Suzhou 215000

Multi-soliton solution to a multi-component coupled Ito system is investigated based on the Hirota bilinear method. By virtue of the perturbation method, we firstly derive one- and two-soliton solutions for the coupled Ito system possessing four components. Then the multi-soliton solution for the multi-component coupled Ito system is summarized into a general form expressed by pfaffians. Finally, this general pfaffian-type soliton solution is proved by pfaffian techniques.

关键词： PFAFFIAN problem PERTURBATION (Quantum dynamics) EQUATIONS BILINEAR forms PHYSICS research

An Effective Differential Fault Analysis on the Serpent Cryptosystem in the internet of Things

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China Communications 2014年第6期11卷 129-139页

作者： LI Wei TAO Zhi GU Dawu SUN Li QU Bo LIU Zhiqiang LIU Ya School of Computer Science and Technology Donghua University Department of Computer Science and Engineering Shanghai Jiao Tong University State Key laboratory of Information security Institute of Information Engineering Chinese Academy of Sciences Shanghai Key laboratory of Integrate Administration Technologies for Information security Network Architectures and Services Delft University of Technology Mekelweg 4 2628 CD Delft The Netherlands ESAT/COSIC and IBBT Katholieke Universiteit Leuven Department of Computer Science and Engineering University of Shanghai for Science and Technology

Due to the strong attacking ability, fast speed, simple implementation and other characteristics, differential fault analysis has become an important method to evaluate the security of cryptosystem in the internet of Things. As one of the AES finalists, the Serpent is a 128-bit Substitution-Permutation Network(SPN) cryptosystem. It has 32 rounds with the variable key length between 0 and 256 bits, which is flexible to provide security in the internet of Things. On the basis of the byte-oriented model and the differential analysis, we propose an effective differential fault attack on the Serpent cryptosystem. Mathematical analysis and simulating experiment show that the attack could recover its secret key by introducing 48 faulty ciphertexts. The result in this study describes that the Serpent is vulnerable to differential fault analysis in detail. It will be beneficial to the analysis of the same type of other iterated cryptosystems.

关键词： internet of things cryptanalysis differential fault analysis serpent.

Secure Blockchain-Enabled internet of Vehicles Scheme with Privacy Protection

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Computers, Materials & Continua 2023年第6期75卷 6185-6199页

作者： Jiansheng Zhang Yang Xin Yuyan Wang Xiaohui Lei Yixian Yang Information security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing100876China Beijing Everyone Crowdsourcing Technology Company Ltd. Beijing100018China

The car-hailing platform based on internet of Vehicles(IoV)tech-nology greatly facilitates passengers’daily car-hailing,enabling drivers to obtain orders more efficiently and obtain more significant ***,to match the driver closest to the passenger,it is often necessary to process the location information of the passenger and driver,which poses a considerable threat to privacy disclosure to the passenger and *** these issues,in this paper,by combining blockchain and Paillier homomorphic encryption algorithm,we design a secure blockchain-enabled IoV scheme with privacy protection for online *** this scheme,firstly,we propose an encryp-tion scheme based on the ***,the location information of passengers and drivers is encrypted in this ***,by introducing Paillier homomorphic encryption algorithm,the location matching of passengers and drivers is carried out in the ciphertext state to protect their location *** last,blockchain technology is used to record the transactions in online car-hailing,which can provide a security guarantee for passengers and *** we further analyze the security and performance of this *** with other schemes,the experimental results show that the proposed scheme can protect the user’s location privacy and have a better performance.

关键词： Blockchain IoV privacy protection anti-quantum

Research and Review on Computer Forensics

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China Communications 2010年第6期7卷 37-43页

作者： Guo Hong Jin Bo Huang Daoli Key laboratory of Information Network security Ministry of Public Security People＇s Republic of China （The 3rd Research Institute of Ministry of Public Security） Shanghai 201204 P. R. China

With the development of internet and information technology, the digital crimes are also on the rise. Computer forensics is an emerging research area that applies computer investigation and analysis techniques to help detection of these crimes and gathering of digital evidence suitable for presentation in courts. This paper provides foundational concept of computer forensics, outlines various principles of computer forensics, discusses the model of computer forensics and presents a proposed model.

关键词： computer forensics computer crime digital evidence

Adaptive Learning-Based Delay-Sensitive and Secure Edge-End Collaboration for Multi-Mode Low-Carbon Power IoT

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China Communications 2022年第7期19卷 324-336页

作者： Haijun Liao Zehan Jia Ruiqiuyu Wang Zhenyu Zhou Fei Wang Dongsheng Han Guangyuan Xu Zhenti Wang Yan Qin Hebei Key laboratory of Power internet of Things Technology North China Electric Power UniversityBaoding 071003HebeiChina State Grid Anhui Electric Power Company Chuzhou Power Supply Company Chuzhou 239000AnhuiChina

Multi-mode power internet of things(PIoT)combines various communication media to provide spatio-temporal coverage for low-carbon operation in smart ***-end collaboration is feasible to achieve the full utilization of heterogeneous resources and ***,edge-end collaboration-based multi-mode PIoT faces challenges of mutual contradiction in communication and security quality of service(QoS)guarantee,inadaptability of resource management,and multi-mode access *** propose an Adaptive learning based delAysensitive and seCure Edge-End Collaboration algorithm(ACE_(2))to optimize multi-mode channel selection and split device power into artificial noise(AN)transmission and data transmission for secure data ***_(2) can achieve multi-attribute QoS guarantee,adaptive resource management and security enhancement,and access conflict elimination with the combined power of deep actor-critic(DAC),“win or learn fast(WoLF)”mechanism,and edge-end *** demonstrate its superior performance in queuing delay,energy consumption,secrecy capacity,and adaptability to differentiated low-carbon services.

关键词： multi-mode low-carbon PIoT edge-end collaboration multi-attribute QoS guarantee security enhancement adaptive deep actor-critic