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A Secure Energy Internet Scheme for IoV Based on Post-Quantum Blockchain

Computers, Materials & Continua 2023年第6期75卷 6323-6336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. Beijing 100018China

With the increasing use of distributed electric vehicles(EV),energy management in the Internet of vehicles(IoV)has attracted more attention,especially demand response(DR)management to achieve efficient energy management in ***,it is a tendency to introduce distributed energy such as renewable energy into the existing supply *** optimizing the energy internet(EI)for IoV,in this paper,we introduce blockchain into energy internet and propose a secure EI scheme for IoV based on post-quantum blockchain,which provides the new information services and an incentive cooperation mechanism for the current energy IoV ***,based on the principles of constructing a short lattice basis and preimage sampling,a lattice signature scheme is proposed and used in blockchain for authentication,which provides anti-quantum ***,we design the EI based on the post-quantum blockchain ***,based on this model,we design a secure EI scheme for IoV based on post-quantum *** our analysis and experiment,this new scheme can increase the efficiency of energy utilization and enrich EI’s application in *** particular,we further illustrate and analyze its *** is shown that EI based on post-quantum blockchain is more secure and efficient in information communications and energy trading.

关键词： EI blockchain IoV information security anti-quantum

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Efficient VNF-FG Scaling Algorithm for 5G Network Slices

Efficient VNF-FG Scaling Algorithm for 5G Network Slices

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2023 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2023

作者： Chai, Xuqing Wang, Ying Zhang, Manjun Cong, Lin Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing China

ISBN: (纸本)9798350321524

While meeting the needs of network traffic, dynamic deployment of VNF is the key to cost optimization of NFV system. In addition to considering server resource capacity and dynamic user traffic, the dynamic expansion strategy also needs to strike a balance between the operating costs of VNF, the cost of maintaining VNF instances, the cost of VNF deployment, and the additional cost of servers placing new VNF instances. In this paper, the problem is modeled as a 0-1 integer linear programming model with quadratic terms, and a new linear programming method is used to solve the problem. The algorithm reduces the complexity of the algorithm to a great extent by reducing the number of variables in the constraint. Through the experimental simulation, we prove the effectiveness of the algorithm and reduce the cost of VNF-FG scaling. © 2023 IEEE.

关键词： Quadratic programming

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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

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

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RACC: Rapid and Accurate INT-Based Congestion Control in RDMA Network

RACC: Rapid and Accurate INT-Based Congestion Control in RDM...

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2024 IEEE Global Communications Conference, GLOBECOM 2024

作者： Zhao, Yanzhe Wang, Shuo Han, Siyu Zhou, Dong Peng, Guoyu Huang, Tao Bupt State Key Laboratory of Networking and Switching Technology Beijing100876 China Purple Mountain Laboratories Nanjing211111 China

ISBN: (纸本)9798350351255

With the rapid growth of network speed, datacenter applications have increasing demands on networks for high throughput and ultra-low latency. RDMA is widely deployed due to its high performance. Most existing RDMA congestion control schemes employ end-to-end architecture with inherent feedback delays of at least one Round-Trip Time (RTT).To overcome these limitations, we propose RACC, a rapid and accurate INT-Based RDMA congestion control scheme. The switches directly provide INT feedback, reducing the feedback signal latency. In addition, the adaptive rate update mechanism is adopted at the sender, which enhances the rapid response to network congestion and the stable control of in-flight bytes. We conduct simulation experiments based on the Fat-Tree topology to analyze the requirements for datacenter performance metrics including convergence, fairness, and dynamic queues. Our evaluations show that the peak queue lengths are reduced by up to 80% compared to HPCC and PowerTCP, and the convergence time after congestion is reduced by half. © 2024 IEEE.

关键词： Congestion control (communication)

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Blockchain-Based Reliable Fog-Cloud Service Solution for IIoT

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Chinese Journal of Electronics 2021年第2期30卷 359-366页

作者： DAI Meiling XU Siya SHAO Sujie GUO Shaoyong QIU Xuesong XIONG Ao State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Industrial Internet of things(IIoT) deploys a large number of smart devices to obtain industrial data, which will be transmitted to cloud for analysis to improve industrial productivity. The management of large-scale devices is complicated, and it's also a challenge to choose a high-quality cloud service for data analysis as the number of service with similar functions increases. To address these issues, we propose a reliable fog-cloud service solution with blockchain-based fog-cloud architecture. In fog layer, we build a management blockchain between fog servers and design a management method for industrial devices; In cloud layer, we construct a service blockchain between cloud service providers to form an open "service market". Quality of service and reputation based matching algorithm and reputation-based consensus algorithm are designed. The simulation results show correctness and efficiency of algorithms, and validate effectiveness of our proposed solution.

关键词： industrial data management blockchain management method large-scale devices reputation-based consensus algorithm data analysis industrial productivity IIoT smart devices industrial devices open service market fog layer matching algorithm cloud computing cloud service providers service blockchain cloud layer high-quality cloud service fog servers fog blockchain-based reliable fog-cloud service solution blockchain-based fog-cloud architecture

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Liquid Crystal Phase Shifter With High Figure of Merit in X-Band 11

Liquid Crystal Phase Shifter With High Figure of Merit in X-...

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11th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2023 - Proceedings

作者： Jiang, Zhiwei Yang, Chuang Peng, Mugen Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China

ISBN: (纸本)9798350326277

The phase shifters, crucial components of the phased array systems in 5G and 6G, faces limitations in its development as the large-scale integration. This paper presents an innovative approach utilizing columnar liquid crystal-based X-band stripline multi-layer phase shifters. The design incorporates an SMA interface for convenient feed, ensuring a 50-ohm impedance match for seamless integration with power dividers and antennas. Notably, this phase shifter achieves a phase shift of over 360° within the 9-11GHz frequency range, with figure of merit(FoM) exceeding 100°/dB at the central frequency. © 2023 IEEE.

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Adaptive Prediction-Based Beam Tracking Scheme for UAV mmWave Communications

Adaptive Prediction-Based Beam Tracking Scheme for UAV mmWav...

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2023 IEEE Globecom Workshops, GC Wkshps 2023

作者： Zhu, Jianan Liu, Chenxi Chen, Wenyun Hu, Xiaoling Peng, Mugen Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing100876 China

ISBN: (纸本)9798350370218

In this paper, we propose a prediction-based beam tracking scheme for the unmanned aerial vehicle (UAV) millimeter wave (mmWave) communication systems, where a UAV transmits to another UAV moving with relative high speed and rapidly changing angular velocity. Specifically, we first characterize the impacts of time-varying angular velocity and beam tracking frequency on the average transmission rate of our considered systems. Based on which, we obtain an analytical expression of the average transmission rate in the regime of high signal-to-noise ratio, thus enabling us to determine the optimal beam tracking frequency and predict the angle of arrival/angle of departure such that the maximum average transmission rate can be achieved. Through numerical results, we validate the effectiveness of our proposed adaptive predication-based beam tracking scheme, demonstrating how it can be robust to the rapidly changing angular velocity of the UAV, compared to various baselines. © 2023 IEEE.

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Exploration on 2D DOA Estimation of Linear Array Motion:Uniform Linear Motion

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China Communications 2023年第11期20卷 78-95页

作者： Jianhong Chu Zhi Zhang Yu Guo School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China

Generally,due to the limitation of the dimension of the array aperture,linear arrays cannot achieve two-dimensional(2D)direction of arrival(DOA)*** the emergence of array motion provides a chance for *** this paper,a generalized motion scheme and a novel method of 2D DOA estimation are proposed by exploring the linear array *** be specific,the linear arrays are controlled to move along an arbitrary direction at a constant velocity and snap per fixed time *** the received signals are processed to synthesize the comprehensive observation vector for an extended 2D virtual ***,since most of 2D DOA estimation methods are not universal to our proposed motion scheme and the reduced-dimensional(RD)method fails to handle the case of the coupled parameters,a decoupled reduced-complexity multiple signals classification(DRC MUSIC)algorithm is designed *** results demonstrate that:a)our proposed scheme can achieve underdetermined 2D DOA estimation just by the linear arrays;b)our designed DRC MUSIC algorithm has the good properties of high accuracy and low complexity;c)our proposed motion scheme with the DRC method has better universality in the motion direction.

关键词： 2D DOA estimation linear array motion reduced complexity synthetic aperture

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PRIS: Online Routing and Scheduling Making CQF Flexible in Dynamic Time-Sensitive Networks 9

PRIS: Online Routing and Scheduling Making CQF Flexible in D...

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9th International Conference on Computer and Communications, ICCC 2023

作者： Cao, Kexin Yang, Fan Bupt State Key Laboratory of Networking and Switching Technology China Purple Mountain Laboratories Nanjing China

ISBN: (纸本)9798350317251

The growing number of IoT devices has brought about a large number of time-sensitive applications, and time-sensitive networks (TSN) are widely regarded as promoting paradigm for enabling the deterministic transmission. However, most of the existing research is based on the static network where the flow information is known a priori, and the transmission scheduling scheme is synthesized offline. This makes their design mechanism unsuitable for industrial automation scenarios with equipment changes and flow changes. Meanwhile, joint routing and scheduling faces the problem of large search space and high algorithm complexity, which poses a challenge to how to solve the problem within the acceptable time range of dynamic *** present PRIS, an algorithm that combines pre-routing and online incremental scheduling. Considering the periodicity of time-sensitive flow, the pre-routing algorithm uses weight factors including scheduling compatibility and load balancing as routing indicators. The online incremental scheduling based on Cyclic-Queuing and Forwarding(CQF), which was proposed by IEEE 802.1 to achieve bounded delay transmission. Based on CQF, our PRIS is designed to be flexible and with high schedulability, low execution time. Simulation results show PRIS has a high scheduling success rate of 92.7% at 150 new flows in feasible sub-second execution time. © 2023 IEEE.

关键词： Computational complexity

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Flow Scheduling and Network Updates in Time-Sensitive Software-Defined Networks 4

Flow Scheduling and Network Updates in Time-Sensitive Softwa...

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4th International Conference on Artificial Intelligence and Electromechanical Automation, AIEA 2023

作者： Nie, Tianzheng Yao, Haipeng Wang, Xiaolong Zhu, Lin State Key Laboratory of Networking and Switching Technology BUPT China The Faculty of Information Technology Beijing University of Technology China

ISBN: (纸本)9781510666412

With the further deepening and upgrading of digitization and informatization of industrial enterprises, the industrial network needs higher flexibility and reliability. As a comprehensive, unified, and standard new industrial Ethernet technology, Time-sensitive network technology makes industrial network technology and industrial ecology more open and dynamic. Time-sensitive Software-defined network introduces the concept of software-defined network based on time-sensitive network, which makes the whole network more real-time and flexible. With the emergence of dynamic applications, time-sensitive networks also need to be updated in real-time. The old update mechanism cannot ensure that the new and old flow is separate from one another, resulting in network congestion. In this paper, a new scheduling update scheme is proposed, which eliminates the conflict between the old and new traffic by separating the old scheduling scheme from the new. The experimental results on two different network topologies show that the update time of the proposed scheduling scheme is shortened by 5.68% compared with the traditional scheduling scheme. The network resource utilization of the two network topologies decreased by 3.3% and 10.02%, respectively. © 2023 SPIE.

关键词： Network topology

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