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IEEE International Conference on Computer and Communications

作者： Ye Shengzhao Zhao Bo Wei Shuai Yin Congyue Wang Sunan SoC Lab China National Digital Switching System Engineering & Technological R&D Center Zhengzhou China College of Communication & Engineering Shenzhen Polytechnic Schools Shenzhen China

ISBN: (纸本)9781538683408

Mimic defense techniques can solve unknown vulnerabilities as well as backdoors without prior knowledge based on dHr structure. Compared with traditional defense methods, dHr structure brings dynamic and heterogeneous factors into systems to enhance security. In this paper, we discuss the security-critical scheduling problem in dHr-based processing system and propose MHF algorithm according to the characters of heterogeneous processing nodes with different performance. While ensuring task schedulability, MHF algorithm improves the average heterogeneity of processing nodes as high as possible when allocating redundant versions of a task. Simulation results show that the average heterogeneity of MHF algorithm is 22.7% higher than that of rF algorithm when tasks' guarantee ratio approaches 100%.

关键词： Task analysis Security real-time systems redundancy Software Scheduling algorithms

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Physical Layer Security Scheme Based on Base Station Cooperation in dense Heterogeneous Networks 85

Physical Layer Security Scheme Based on Base Station Coopera...

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85th IEEE Vehicular Technology Conference, VTC Spring 2017

作者： Zhang, Bo Huang, Kaizhi Yi, Ming Yi, Mingliang National Digital Switching System Engineering and Technological R and D Center Zhengzhou450002 China

ISBN: (纸本)9781509059324

For preventing the leakage of confidential messages sent to a marcocell user in dense heterogeneous networks, a physical layer security scheme based on base station cooperation is proposed in the paper. To improve transmission rate of confidential messages and make the downlink signals of other legitimate users interfere with eavesdroppers, the beamforming vectors at a macrocell base station and femtocell base stations are jointly optimized. The problem of maximizing the secrecy rate is modeled under the limitations of quality of service(QoS) and base station power. due to the intractability, this problem is recast into a convex Semidefinite Program(SdP) problem using the Semidefinite relaxation(Sdr) technique and the successive convex approximation(SCA) algorithm. Simulation results validate the efficacy and the security of the scheme. © 2017 IEEE.

关键词： Heterogeneous networks

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An Intelligent Evaluation Model for decision Scheme Based on deep Learning

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Journal of Physics: Conference Series 2019年第3期1176卷

作者： Wei Ou Zhaohui Yi Lan Cheng Ying Liao The Border and Coastal Defense College Urumqi China China National Digital Switching System Engineering & Technological R&D Center Zhengzhou China

Studying and constructing the intelligent decision-making model for simulation entity can effectively improve the credibility and immersion of wargaming, in which intelligent evaluation of decision scheme is the key module. To lower the reasoning complexity and shorten the decision time, an intelligent evaluation model based on Stacked Auto-Encoder (SAE) is proposed, which simulates the reasoning mode of human decision-making, and learns commander's knowledge and experience through unsupervised and supervised training. Then, to improve the robustness and generalization ability of the deep learning model, a de-noising training method and sparsity constraints are introduced. Finally, simulation experiment is carried out to verify the scientificity and effectiveness of the proposed model.

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rNN deep reinforcement Learning for routing Optimization

RNN Deep Reinforcement Learning for Routing Optimization

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International Conference on Computer and Communications (ICCC)

作者： Penghao Sun Junfei Li Julong Lan Yuxiang Hu Xin Lu China National Digital Switching System Engineering & Technological R&D Center (NDSC) Zhengzhou China China Electronics Technology Group Corporation 32th Research Institute Shanghai China

ISBN: (纸本)9781538683408

routing optimization has been discussed in network design for a long time. In recent years, new methods of routing strategy based on reinforcement Learning are being considered. In this paper, we propose a reinforcement learning based smart agent that can optimize routing strategy without human experience. Our proposed scheme is based on the collection of the traffic intensity in switches and the usage of a recurrent Neural Network based deep reinforcement learning model to train the agent. Simulation result shows that the proposed scheme can adjust the routing strategy dynamically according to the network condition and outperforms the traditional shortest path routing after trained.

关键词： routing reinforcement learning Neural networks Telecommunication traffic Training delays Optimization

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China Communications 2016年第S1期13卷 72-86页

作者： ZHANG Guo ZHANG Jianhui WANG Binqiang ZHANG Zhen National Digital Switching System Engineering & Technological R&D Center

Towards line speed and accurateness on-line content popularity monitoring on Content Centric Networking(CCN) routers, we propose a three-stage scheme based on Bloom filters and hash tables for differentiated traffic. At the first stage, we decide whether to deliver the content to the next stage depending on traffic types. The second stage consisting of Standard Bloom filters(SBF) and Counting Bloom filters(CBF) identifies the popular content. Meanwhile, a scalable sliding time window based monitoring scheme for different traffic types is proposed to implement frequent and real-time updates by the change of popularities. Hash tables according with sliding window are used to record the popularity at the third stage. Simulation results reveal that this method reaches a 40 Gbps processing speed at lower error probability with less memory, and it is more sensitive to the change of popularity. Additionally, the architecture which can be implemented in CCN router is flexible and scalable.

关键词： CCN line speed traffic type bloom filters hash tables popularity monitoring

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research Notes: distributed Shadow for router Security defense

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International Journal of Software engineering and Knowledge engineering 2018年第2期28卷 193-206页

作者： Yufeng Li Le Tian Han Qiu Chuanhao Zhang National Digital Switching System Engineering and Technological R&D Center Zhengzhou Henan 450002 P. R. China School of Computer Engineering and Science Shanghai University Shanghai 200023 P. R. China Railway Police College Zhengzhou Henan 450000 P. R. China

router security defense technologies emerging in recent years could hardly detect and block the new booming threats with unknown signatures such as hardware Trojan, zero-day attacks, etc. We present a novel router defense technology, distributed router shadow, which builds a closed execution environment to deceive attacks entering into the router, thereby misleading the attackers into regarding it as the real attack target and executing the suspicious code to maximize the chances of detonating the system exploit; thus the original router is prevented from attacking and the suspicious code can be detected. Our experiment and analysis show that the router shadow can defend not only attacks with signature but also some new attacks without signature.

关键词： router security distributed shadow control plane pass-through protection

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Flow consistency in an intensive SdN security architecture with multiple controllers

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网络与信息安全学报 2017年第12期3卷 48-64页

作者： LV Ying-ying GUO Yun-fei QI Chao WU Qi WANG Ya-wen National Digital Switching System Engineering & Technological R&D Center Zhengzhou 450002 China

As critical components in SdN,controllers are prone to suffer from a series of potential attacks which result in system *** prevent the compromise caused by single failure of controller or flow-tampering attacks,Mcad-SA,an aware decision-making security architecture with multiple controllers was proposed,which coordinates heterogeneous controllers internally as an"associated"*** architecture extends existing control plane and takes advantage of various controllers’merits to improve the difficulty and cost of probes and attacks from *** this framework,flow rules distributed to switches are no longer relying on a single controller but according to the vote results from the majority of controllers,which significantly enhances the reliability of flow *** to the vote process of flow rules,segmentation and grading is adopted to pick up the most trustful one from multiple flow rules and implement flow *** mechanism avoids comparison between rules via bit by bit which is impractical among several *** analysis and simulation results demonstrates the effectiveness,availability and resilience of the proposed methods and their better security gain over general SdN architectures.

关键词：计算机网络网络管理应用程序信息安全

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Fast network restoration with equivalent cooperative routing

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Journal of Communications and Information Networks 2017年第3期2卷 10-17页

作者： Fang dong Jianyang Huang Penghao Sun Yuxiang Hu National Digital Switching System Engineering&Technological R&D Center Zhengzhou 450002China

Aiming at the problem of failure recovery in current networks,a fast failure recovery method based on equivalent cooperative routing is ***,the transmission path between the source and destination nodes is divided into several non-overlapping path ***,backup paths are deployed for each link in the path segment through segmented routing technology,which ensures fast routing recovery after ***,in order to avoid damaging the QoS of the data stream through the failure recovery process,the transmission is guaranteed by the intersegment QoS *** experimental results show that the proposed method has a low failure recovery delay under a relatively small flow table cost.

关键词： fast failure recovery backup path segment routing equivalent cooperative routing

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New Blind recognition Method of SCLd and OFdM in Alpha-Stable Noise

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International Journal of Communications, Network and system Sciences 2017年第5期10卷 240-251页

作者： Junlin Zhang Bin Wang Yang Wang National Digital Switching System Engineering and Technological R&D Centre Zhengzhou China

This paper deals with modulation classification under the alpha-stable noise condition. Our goal is to discriminate orthogonal frequency division multiplexing (OFdM) modulation type from single carrier linear digital (SCLd) modulations in this scenario. Based on the new results concerning the generalized cyclostationarity of these signals in alpha-stable noise which are presented in this paper, we construct new modulation classification features without any priori information of carrier frequency and timing offset of the received signals, and use support vector machine (SVM) as classifier to discriminate OFdM from SCLd. Simulation results show that the recognition accuracy of the proposed algorithm can be up to 95% when the mix signal to noise ratio (MSNr) is up to ?1 dB.

关键词： Modulation recognition Generalized Second-Order Cyclic Statistics OFdM Alpha-Stable Noise

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Theoretical Model for Patterns of VICTS Antenna

Theoretical Model for Patterns of VICTS Antenna

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

作者： Jun Gao Xue Lei Junmo Wu Tianpeng Li National Digital Switching System Engineering and Technological R&D Center

A theoretical model for array patterns of variable inclination continuous transverse stub(VICTS) antenna is proposed. The theoretical model is utilized to reveal the nonlinear relationship in beam scanning between the angular position of beam and the rotation angle of the radiation layer. A dynamic coordination system is used to simplify the theoretical model and reduce errors. Based on the dynamic coordination system, array pattern of VICTS antenna with arbitrary amplitude distribution and arbitrary aperture shape can be calculated by the theoretical model. Both the full-wave simulations and computation of the theoretical model are carried out. The calculation errors of the angular position of beam between the proposed method and the full-wave simulation are less than 1°. By using the proposed method, the problem of nonlinear and dynamic beam steering in the VICTS antenna servo control system can be solved.

关键词： VICTS antenna beam scanning pattern model

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