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2nd EAI International Conference on Security and Privacy in New computing Environments, SPNCE 2019

作者： Hao, Lifei Jia, Bing Zhang, Chuxuan College of Computer Science Inner Mongolia University Hohhot010021 China Inner Mongolia A.R. Key Laboratory of Wireless Networking and Mobile Computing Hohhot010021 China

ISBN: (纸本)9783030213725

With the rapid development of the Internet, the combination of outsourcing and Internet has produced an overturning mode for labor cooperation – crowdsourcing. Crowdsourcing outsource the work that used to be done by internal staffs of a company or organization to non-specific people in a free and voluntary way, which concentrates the wisdom of public to solve difficult problems, greatly optimizes the rational allocation of human resources and thus improves the social productivity. In the environment of crowdsourcing market, how to set an "appropriate" price to recruit workers to complete a given task at a reasonable quality and cost is a key problem which restricts the development of it. Therefore, this paper proposes a posted pricing method based on the Random Forests (RF) algorithm in crowdsourcing market. The proposed mechanism is described theoretically and the actual crowdsourcing date is acquired from Taskcn by python spider firstly. Then, based on these empirical data, serval typical machine learning methods have been compared, which proves that RF is a very suitable method for posted pricing in crowdsourcing market. Finally, extensive experiments have been conducted and analysed for optimizing the parameters in RF and a set of parameters suitable for posted pricing in crowdsourcing is given to construct the corresponding RF model. © 2019, ICST Institute for computer Sciences, Social Informatics and Telecommunications Engineering.

关键词： Crowdsourcing

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Differential Privacy Images Protection Based on Generative Adversarial Network

Differential Privacy Images Protection Based on Generative A...

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IEEE International Conference on Trust, Security and Privacy in computing and Communications (TrustCom)

作者： Ren Yang Xuebin Ma Xiangyu Bai Xiangdong Su Inner Mongolia Key Laboratory of Wireless Networking and Mobile Computing Inner Mongolia University Hohhot China School of computer science Inner Mongolia University Hohhot China

ISBN: (数字)9781665403924

ISBN: (纸本)9781665403931

In recent years, as image data are widely used in data analysis tasks, the problem of privacy disclosure is becoming more and more serious. However, the privacy protection technology of image data is still immature. In this paper, we propose a privacy protection framework named dp-WGAN for image data. This framework uses differential privacy and generative adversarial network to train a generative model with privacy protection function. Using this generative model, synthetic data with similar characteristics to sensitive data can be obtained, and synthetic data is published instead sensitive data to complete all kinds of data analysis tasks. Through extensive empirical evaluation on benchmark datasets, we demonstrate that dp-WGAN can provide strong privacy protection for sensitive data and produce high-quality synthetic data.

关键词： Differential privacy Analytical models Data analysis Publishing Generative adversarial networks Data models Task analysis

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Comparative Analysis of VANET Authentication Architecture and Scheme

Comparative Analysis of VANET Authentication Architecture an...

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International Symposium on Computational Intelligence and Design, ISCID

作者： Yu Zhang Xiangyu Bai College of Computer Inner Mongolia University Inner Mongolia Key Laboratory of Wireless Networking and Mobile Computing Hohhot China

ISBN: (数字)9781728146539

ISBN: (纸本)9781728146546

Vehicle Ad Hoc Network (VANET) is a kind of vehicular self-organizing network. The communication mode of VANET mainly includes V2V, V2I and I2V. VANET has the unique characteristics of changeable network topology, frequent exchange of messages between nodes and unstable channel resources. With the in-depth study of vehicular network, more and more security problems have emerged, and the safety of vehicular network is one of the important factors affecting the overall development of vehicular network. More and more scholars have studied and discussed this issue. This paper summarizes the research work on VANET security authentication in recent years. Firstly, an overview of the mathematical tools, cryptography basics, and cybersecurity knowledge used to build a secure authentication scheme; Then, several types of security authentication methods are introduced from the key technologies of authentication; Finally, it makes a comparative analysis of the existing work and summarizes the prospects.

关键词： Vehicular ad hoc networks Authentication Privacy Elliptic curve cryptography

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A Review of UAV Ferry Algorithms in Delay Tolerant Network

A Review of UAV Ferry Algorithms in Delay Tolerant Network

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International Symposium on Computational Intelligence and Design, ISCID

作者： Bo Yang Xiangyu Bai Inner Mongolia Key Laboratory of Wireless Networking and Mobile Computing College of Computer Science of Inner Mongolia University Hohhot China

ISBN: (数字)9781728146539

ISBN: (纸本)9781728146546

The Delay Tolerant Network (DTN) is suitable for post-disaster environments where infrastructure is scarce. Search and rescue operations require network deployment in areas not covered by infrastructure. In the post-disaster DTN environment, UAVs are introduced as ferry nodes for message-passing and it is a popular practice recently. This paper introduces the application of Delay Tolerant Network in post-disaster environments and introduces message-passing through ferry nodes in DTN. Next, this paper analyzes the UAV's ferry algorithms from the perspectives of UAV network architecture, node routing algorithm, node deployment, node trajectory optimization, node energy optimization and node storage allocation optimization in DTN. The application of UAV ferry algorithm in post-disaster DTN environment is analyzed, and the performance evaluation as well as the comparison of different algorithms are given. Finally, this paper looks forward to the future research direction of UAV ferry algorithm in DTN environment.

关键词： Routing Unmanned aerial vehicles Delays Data communication Protocols Optimization Relays

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Comparison of Location Privacy Protection Schemes in VANETs

Comparison of Location Privacy Protection Schemes in VANETs

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International Symposium on Computational Intelligence and Design, ISCID

作者： Yaqiong Ma Xiangyu Bai Inner Mongolia A.R. Key Laboratory of Wireless Networking and Mobile Computing College of Computer Science Inner Mongolia University Hohhot China

ISBN: (数字)9781728146539

ISBN: (纸本)9781728146546

Vehicular Ad-hoc Networks (VANETs) is a traditional mobile ad hoc network (MANET) used on traffic roads and it is a special mobile ad hoc network. As an intelligent transportation system, VANETs can solve driving safety and provide value-added services. Therefore, the application of VANETs can improve the safety and efficiency of road traffic. Location services are in a crucial position for the development of VANETs. VANETs has the characteristics of open access and wireless communication. Malicious node attacks may lead to the leakage of user privacy in VANETs, thus seriously affecting the use of VANETs. Therefore, the location privacy issue of VANETs cannot be ignored. This paper classifies the attack methods in VANETs, and summarizes and compares the location privacy protection techniques proposed in the existing research.

关键词： Privacy Trajectory Protocols Roads Correlation Probability distribution wireless communication

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Traffic Image Acquisition and Compression Technology in Vehicular Ad Hoc Network

Traffic Image Acquisition and Compression Technology in Vehi...

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IEEE International Conference on Big Data and Cloud computing (BdCloud)

作者： Fu Pang Xiangyu Bai College of Computer Science Inner Mongolia University Hohhot China Inner Mongolia Key Laboratory of Wireless Networking and Mobile Computing Inner Mongolia University Hohhot China

ISBN: (数字)9781728143286

ISBN: (纸本)9781728143293

With the frequent occurrence of traffic accidents, the timely acquisition of traffic images using Vehicular Ad Hoc Network (VANET) technology is of great significance for traffic rescue and evidence preservation. However, due to the limited bandwidth of VANET, the amount of data transmitted is limited. In response to this problem, this paper designs an image acquisition algorithm. The algorithm selects several images from the driving recorder of the vehicles around the accident. These images are transmitted to the traffic management department. In addition, the selected images have strong temporal and spatial correlation, so they can be compressed by compressed sensing technology to further reduce the amount of data. Therefore, the method of processing images on the vehicle node using compressed sensing technology are proposed. Finally, the effectiveness of the image acquisition algorithm is verified by simulation experiments.

关键词： Accidents Image coding Roads Compressed sensing Vehicular ad hoc networks Bandwidth Cameras

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Secrecy capacity bounds for visible light communications with signal-dependent noise

arXiv

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arXiv 2021年

作者： Wang, Jin-Yuan Fu, Xian-Tao Wang, Jun-Bo Lin, Min Cheng, Julian Alouini, Mohamed-Slim Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing210003 China Shanghai Key Laboratory of Trustworthy Computing East China Normal University Shanghai200062 China College of Telecommunications & Information Engineering Nanjing University of Posts and Telecommunications Nanjing210003 China National Mobile Communications Research Laboratory Southeast University Nanjing211111 China School of Engineering The University of British Columbia KelownaBCV1V 1V7 Canada Computer Electrical and Mathematical Science and Engineering Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia

In physical-layer security, one of the most fundamental issues is the secrecy capacity. The objective of this paper is to determine the secrecy capacity for an indoor visible light communication system consisting of a transmitter, a legitimate receiver and an eavesdropping receiver. In such a system, both signal-independent and signal-dependent Gaussian noises are considered. Under non-negativity and average optical intensity constraints, lower and upper secrecy capacity bounds are first derived by the variational method, the dual expression of the secrecy capacity, and the concept of "the optimal input distribution that escapes to infinity". Numerical results show that the secrecy capacity upper and lower bounds are tight. By an asymptotic analysis at large optical intensity, there is a small performance gap between the asymptotic upper and lower bounds. Then, by adding a peak optical intensity constraint, we further analyze the exact and asymptotic secrecy capacity bounds. Finally, the tightness of the derived bounds is verified by numerical results. Copyright © 2021, The Authors. All rights reserved.

关键词： Asymptotic analysis

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MAC-AC: A Novel Distributed MAC Protocol for Accessing Channel in Vehicular Ad Hoc Networks

MAC-AC: A Novel Distributed MAC Protocol for Accessing Chann...

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IEEE Conference on Vehicular Technology (VTC)

作者： Baozhu Li Fen Hou Changyue Zhang Shaohua Li Shujuan Ji Shanzhi Chen School of Information Science and Engineering University of Jinan Jinan China Shandong Provincial Key Laboratory of Network-based Intelligent Computing Jinan China Faculty of Science and Technology University of Macau Macau China Automotive Research Institute China National Heavy Duty Truck Group Co. Ltd Jinan China Shandong Key Laboratory of Wisdom Mine Information Technology Qingdao China College of Computer Science and Engineering Shandong University of Science and Technology Qingdao China State Key Lab of Wireless Mobile Communication Beijing China China Academy of Telecommunication Technology Beijing China

ISBN: (数字)9781728194844

ISBN: (纸本)9781728194851

As a promising paradigm, VANET has been attracting more and more attention from the industry and academia recently. However, due to rapid movement of vehicles and highly dynamic topology, designing efficient MAC protocol for VANET is still challenging. In this paper, we propose MAC-AC, a novel TDMA-based distributed MAC protocol designed specifically for a vehicular ad hoc network. In MAC-AC, when multiple vehicles compete for the same time slot within their two-hop communication range, one of contending vehicle can obtain this time slot by a simple method, which increases the success probability of vehicles accessing channel. Analysis results are presented to demonstrate the efficiency of MAC-AC and compare it to ADHOC MAC, an existing MAC protocol based on TDMA.

关键词： Vehicular and wireless technologies Time division multiple access Network topology Vehicular ad hoc networks Media Access Protocol Topology Vehicle dynamics

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Enhancing Security and Scalability in Software Defined LTE Core Networks

Enhancing Security and Scalability in Software Defined LTE C...

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IEEE International Conference on Trust, Security and Privacy in computing and Communications (TrustCom)

作者： Ruichun Gu Xiaolong Zhang Lei Yu Junxing Zhang College of Computer Science Inner Mongolia University of Science and Technology Baotou China College of Computer Science Inner Mongolia University Hohhot China Inner Mongolia A.R. Key Laboratory of Wireless Networking and Mobile Computing Hohhot China

The rapid development of mobile networks has revolutionized the way of accessing the Internet. The exponential growth of mobile subscribers, devices and various applications frequently brings about excessive traffic in mobile networks. The demand for higher data rates, lower latency and seamless handover further drive the demand for the improved mobile network design. However, traditional methods can no longer offer cost-efficient solutions for better user quality of experience with fast time-to-market. Recent work adopts SDN in LTE core networks to meet the requirement. In these software defined LTE core networks, scalability and security become important design issues that must be considered seriously. In this paper, we propose a scalable channel security scheme for the software defined LTE core network. It applies the VxLAN for scalable tunnel establishment and MACsec for security enhancement. According to our evaluation, the proposed scheme not only enhances the security of the channel communication between different network components, but also improves the flexibility and scalability of the core network with little performance penalty. Moreover, it can also shed light on the design of the next generation cellular network.

关键词： Security Scalability Software Long Term Evolution Local area networks Cloud computing Software defined networking

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When full duplex wireless meets non-orthogonal multiple access: Opportunities and challenges

arXiv

引用

arXiv 2019年

作者： Chen, Xianhao Liu, Gang Ma, Zheng Zhang, Xi Fan, Pingzhi Chen, Shanzhi Richard Yu, F. Key Lab of Information Coding and Transmission Southwest Jiaotong University Chengdu610031 China National Mobile Communications Research Laboratory Southeast University Department of Information Science and Engineering KTH Royal Institute of Technology Stockholm Sweden Key Lab of Information Coding and Transmission Southwest Jiaotong University Chengdu610031 China Networking and Information Systems Laboratory Department of Electrical and Computer Engineering Texas A&M University College StationTX77843 United States State Key Laboratory of Wireless Mobile Communications China Academy of Telecommunication Technology Beijing100191 China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing100876 China Department of Systems and Computer Engineering Carleton University OttawaON Canada

Non-orthogonal multiple access (NOMA) is a promising radio access technology for the 5G wireless systems. The core of NOMA is to support multiple users in the same resource block via power or code domain multiplexing, which provides great enhancement in spectrum efficiency and connectivity. Meanwhile, with the recent advance in self-interference (SI) cancelation techniques, full duplex (FD) wireless communication has become a feasible technology enabling radios to receive and transmit simultaneously. This article aims to investigate the combination of these two emerging technologies. At first, several typical scenarios and protocols are presented to illustrate the application of FD technique in NOMA systems. Then, a novel NOMA system with FD base stations (BSs) based on centralized radio access networks (C-RAN) is proposed. Furthermore, power allocation policies are discussed for the proposed scheme, and simulation results are provided to demonstrate its superiority. Finally, challenges and research opportunities of FD NOMA systems are also identified to stimulate the future research. Copyright © 2019, The Authors. All rights reserved.

关键词： Radio access networks

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