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A user identity matching method based on integrating account attributes

Journal of Physics: Conference Series 2018年第3期1087卷

作者： Y Z Yang H T Yu r Y Huang National Digital Switching System Engineering & Technological R&D Center Zhengzhou China

Aiming at the low utilization rate of attribute information and the lack of mining of the correlation among attributes of the existing cross-social network user identity matching algorithms, we proposed an algorithm for user identity matching across social networks utilizing fuzzy measure and Choquet integrals. Firstly, according to the characteristics of different attributes, we determined different similarity calculation strategies; Secondly, we utilized particle swarm optimization method to calculate the fuzzy density of each attribute; Then Choquet integral was utilized to calculate the similarity of two accounts; Finally, the similarity was compared with the preset matching threshold and the final matching result was obtained. The experimental results in multiple sets of data showed that the average F1 value of the proposed algorithm reaching 84.5%. The performance is not only better than traditional machine learning methods, but also better than several baseline algorithms. It can be more accurate to identify the same user's accounts in multiple social networks according to the attribute information.

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Broadband,polarization-insensitive,and wide-angle microwave absorber based on resistive film

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Chinese Physics B 2016年第6期25卷 528-532页

作者：布丹丹岳春生张广求胡永涛董胜 National Digital Switching System Engineering & Technological R & D Center Zhengzhou 450002 China

A simple design of broadband metamaterial absorber（MA） based on resistive film is numerically presented in this *** unit cell of this absorber is composed of crossed rectangular rings-shaped resistive film,dielectric substrate,and continuous metal *** simulated results indicate that the absorber obtains a 12.82-GHz-wide absorption from about 4.75 GHz to 17.57 GHz with absorptivity over 90% at normal *** of surface power loss density is illustrated to understand the intrinsic absorption mechanism of the *** proposed structure can work at wide polarization angles and wide angles of incidence for both transverse electric（TE） and transverse magnetic（TM） ***,the multi-reflection interference theory is involved to analyze and explain the broadband absorption mechanism at both normal and oblique ***,the polarization-insensitive feature is also investigated by using the interference *** is seen that the simulated and calculated absorption rates agree fairly well with each other for the absorber.

关键词： broadband metamaterial absorber resistive film multi-reflection interference theory

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A Method of Multi-Antenna Signal Selection Based on SNr Estimation

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Procedia Computer Science 2017年 107卷 646-651页

作者： Xue Xiao Zhang Xiaoyi Shen Caiyao National Digital Switching System Engineering & Technique R&D Center Zhengzhou 450000 China

This paper proposes a method to select multi-antenna signals based on SNr estimation, in order to solve the negative influence of the poor partial quality branch signals in multi-antenna system. The algorithm proposes antenna selecting programs, based on the SNr estimation, the Cramer rao bound and the combined signal matched filtering, to avoid the branch poor signals and enhance the signal combine quality. Theoretical and simulation results show that the proposed algorithm has a better performance than the traditional method, and the performance of the algorithm is improved with the increase of the number of antennas and the difference of the signal quality.

关键词： Signal Selection SNr Estimation Cramer-rao Bound Multi-Antenna system

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A distributed Sensor Management Algorithm Based on Auction

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Procedia Computer Science 2017年 107卷 618-623页

作者： Fang deliang ran Xiaomin National Digital Switching System Engineering & Technique R&D Center Zhengzhou 450001 China

Considering the disadvantages of centralized algorithms and limitation of energy in wireless sensor networks (WSN), a distributed auction algorithm is proposed to realize the target tracking sensor management. The method introduces the auction theory in economics and adjusts the price of the sensor resources to solve the target-sensor assignment problem. In order to shorten the decision-making time and save the energy consumption, the CSMA mechanism is introduced and the decision-making can be completed with local information and a few interactions. The convergence and effectiveness of the algorithm are proved, and the simulation results show that the algorithm is superior.

关键词： wireless sensor networks sensor management auction distributed optimization

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downlink Channel Allocation of Visible Light Communication Network Based on Graph Coloring and Traffic Fairness

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Procedia Computer Science 2017年 107卷 667-673页

作者： Fan Yunlong Liu Jianhui Li Qing Zhang Xiaoyi National Digital Switching System Engineering & Technology R&D Center Zhengzhou 450000 China

In this paper, the allocation of downlink channel resources in the indoor visible light multi cell network is studied. Based on the three color channels of rGB-LEd, a conflict graph model is established, and a downlink channel allocation algorithm is proposed for visible light multi cell network. First, the global allocation of users’ access to the cell is given out. Then, considering the users’ business needs, a weighted conflict graph model is established, the channel allocation algorithm is proposed based on graph coloring and user traffic fairness. The simulation results show that, compared with the graph-based dynamic allocation algorithm, the proposed algorithm is to improve the downlink communication fairness of users, and the average throughput of the whole network is improved at the same time.

关键词： visible light communication downlink channel allocation graph coloring traffic fairness

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Topology Inference for CSMA/CA Wireless Network Based on Inter Frame Space

Topology Inference for CSMA/CA Wireless Network Based on Int...

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2017 17th IEEE International Conference on Communication Technology (ICCT 2017)

作者： Shengxiang Li Guangyi Liu Ou Li Siyuan ding National Digital Switching System Engineering ＆ Technological R ＆D Center

In this paper, we propose a novel approach called Wntiifs to infer the topology of CSMA/CA wireless network without the need to cooperate in the network or decode the network’s messages. The approach divides rF frames observed into session atoms according to an inter frame space threshold, and ensures that a session atom consists only of frames transmitted by two nodes. Then, it extracts the link in each atom in different observation time window. Finally, it merges the links in different time window to reconstruct the complete network topology. Experimental results demonstrate that, compared with the existing wireless network topology inference algorithms, Wntiifs is of higher topology inference accuracy.

关键词： wireless networks topology inference inter frame space NS2

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Application research on Sparse Fast Fourier Transform Algorithm in White Gaussian Noise

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Procedia Computer Science 2017年 107卷 802-807页

作者： Liu Zhong Li Lichun Li Huiqi National Digital Switching System Engineering & Technique R&D Center Zhengzhou 450001 China

In sparse fast Fourier transform algorithm, noise will increase the difficulty in frequency location. As to this problem, probability of detected frequency are analyzed with respect to noise level and bucket in this paper. Firstly different mean and variance of compressed vector in frequency domain are derived under the hypothesis of whether there is a signal, then these statistical characteristics are used to analyze the impact of signal-to-noise ratio and number of point per bucket on detection probability of frequency. Finally, simulation curves is given under the conditions of different noise and bucket. Simulation shows that frequency of signal with additive white Gaussian noise could be effectively detected when SNr is higher than 10dB and number of point per bucket smaller than 2 12 . And in order to ensure effective detection of frequency, when SNr decrease, number of point per bucket should be reduced. Through the analysis, this paper provides a theoretical support to enhance the reliability of the algorithm.

关键词： sparse fast Fourier transform statistical characteristics sparse signal additive white Gaussian noise

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ForSA — A New Software defined Network Architecture Based on ForCES

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China Communications 2016年第S1期13卷 16-31页

作者： LI Chuanhuang CEN Lijie GONG Liang WANG Weiming JIN rong LAN Julong School of Information and Electronic Engineering Zhejiang Gongshang University National Digital Switching System Engineering & Technological R&D Center

In recent years, SdN(Software defined Network) as a new network architecture has become the hot research point. Meanwhile,the well-known Open Flow-based SdN got a lot of attention. But it can't provide a flexible and effective network resource description *** an open programmable technology, For CES(Forwarding and Control Element Separation)has also been concerned. However, For CES is confined within a single network node and cannot be applied to the entire network. This paper proposes a new architecture — ForS A(ForC ESbased SdN architecture). The architecture is added a configuration layer based on the traditional SdN architecture, which solves the problem that the northbound interface is not clear between the application layer and the control layer in the SdN architecture. ForS A also implements the compatibility within various forwarding devices in the forwarding layer.

关键词： software defined network ForCES SdN architecture

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A Novel Framework for Zero-day Attacks detection and response with Cyberspace Mimic defense Architecture

A Novel Framework for Zero-Day Attacks Detection and Respons...

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第九届网络分布式计算与知识发现国际会议( 2017 International Conference on Cyber-enabled distributed computing and knowledge discovery)

作者： Wenyan Liu Fucai Chen Hongchao Hu Guozhen Cheng Shumin Huo Hao liang National Digital Switching System Engineering & Technological R&D Center Zhengzhou 450002 HenanChina

In cyberspace,unknown zero-day attacks can bring safety *** defense methods based on signatures are *** on the Cyberspace Mimic defense(CMd)architecture,the paper proposes a framework to detect the attacks and respond to *** are assigned to all online redundant heterogeneous functionally equivalent *** independent outputs are compared and the outputs in the majority will be the final *** abnormal outputs can be detected and so can the *** damaged executive modules with abnormal outputs will be replaced with new ones from the diverse executive module *** analyzing the abnormal outputs,the correspondence between inputs and abnormal outputs can be built and inputs leading to recurrent abnormal outputs will be written into the zero-day attack related database and their reuses cannot work any longer,as the suspicious malicious inputs can be detected and *** responses include IP blacklisting and patching,*** framework also uses honeypot like executive module to confuse the *** proposed method can prevent the recurrent attack based on the same exploit.

关键词： Zero-day attacks Cyberspace Mimic defense Intrusion detection and response Honeypot Feedback Anomaly statistics and analysis

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Using the Cooperative Game for Service Placement of Virtual Network Functions

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China Communications 2016年第S1期13卷 146-157页

作者： XIONG Gang HU Yuxiang WANG Weiming WANG Lingqiang National Digital Switching System Engineering and Technological R&D Center School of Information and Electronic Engineering Zhejiang Gongshang University Zhongxing Telecommunication Equipment Corporation

To address the issues that middleboxes as a fundamental part of today's networks are facing, Network Function Virtualization(NFV)has been recently proposed, which in essence asserts to migrate hardware-based middleboxes into software-based virtualized function *** to the demands of virtual services placement in NFV network environment, this paper models the service amount placement problem involving with the resources allocation as a cooperative game and proposes the placement policy by Nash Bargaining Solution(NBS). Specifically,we first introduce the system overview and apply the rigorous cooperative game-theoretic guide to build the mathematical model, which can give consideration to both the responding efficiency of service requirements and the allocation *** a distributed algorithm corresponding to NBS is designed to achieve predictable network performance for virtual instances ***, with simulations under various scenarios,the results show that our placement approach can achieve high utilization of network through the analysis of evaluation metrics namely the satisfaction degree and fairness index. With the suitable demand amount of services, the average values of two metrics can reach above 90%. And by tuning the base placement, our solution can enable operators to flexibly balance the tradeoff between satisfaction and fairness of resourcessharing in service platforms.

关键词： Middlebox game theory network function virtualization software defined networking

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