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IET International Conference on Information Science and Control Engineering 2012 (ICISCE 2012)

作者： Ronghua Luo Zhen Yang Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications China

ISBN: (纸本)9781629939254

In an underlay cognitive two-way Amplify-and-Forward (AF) relaying network, secondary users (SUS) and primary user (PU) can share the licensed spectrum simultaneously under the interference threshold constraint. In this paper, the joint power allocation and optimal relay selection scheme is proposed for allocating radio resource on cognitive nodes effectively. For power allocation problem, the objective function is to maximize the achieved minimum Signal to Interference plus Noise Ratio (SINR) at SUS, and the constraints include the total transmit power of cognitive nodes and PU interference threshold, the optimal power allocation algorithm and a simple distributed power allocation algorithm are proposed. Furthermore, based on these results, an optimal two-way relay selection scheme is proposed. Simulation results show that the proposed joint power allocation algorithms and relay selection scheme can achieve excellent system performance.

关键词： Cognitive two-way AF relaying Interference threshold Power allocation Relay selection power splitting interference threshold Allocation Algorithm Transmitter power relay Bidirectional

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A trustworthy network architecture based on strengthen TNC

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content technology and its Applications 2012年第17期6卷 343-349页

作者： Yin, Ansheng Zhang, Shunyi Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education China Institute of Information and Network Technology Nanjing University of Posts and Telecommunication China

As networks have grown in size and complexity, the existing isolated add-on security systems of internet are confronting some serious challenges. This paper outlines the background, concept, evolution and basic properties of the trustworthy network, and projects the future development of the network in terms of its access control, modeling of trust relationship, quantification and decisionmaking. Then put forward a strengthen TNC to fix the deficiencies.

关键词： network architecture

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A sliding fractal autoregressive integrated moving average model based on time compensation: SFARIMA

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Advances in Information Sciences and Service Sciences 2012年第19期4卷 11-17页

作者： Yin, An-sheng Zhang, Shun-yi Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education China Institute of Information and Network Technology Nanjing University of Posts and Telecommunication China

The traditional Poisson model in the modern data networks have been ineffective and cannot reflect the real flow trend. However, since Hosking discovers the network traffic self-similarity, self-similar models have continued to emerge, this article improved FARIMA model based on time compensation. We put forward a sliding FARIMA model which fixes the time delay of FARIMA model and analyzed the model's application in the anomaly detection of network.

关键词： Software engineering

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Trustworthy web services discovery via supervised services representation and collaborative QoS prediction

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Journal of Computational Information Systems 2012年第21期8卷 8835-8846页

作者： Chen, Lei Yang, Geng Zhang, Yingzhou Wang, Tao Mou, Bolin College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing 210003 China

With the exponential growth of web services, the researches on how to accurately find the trustworthy services become increasingly important. Currently, some researchers have utilized the idea of services classification to minimize the services discovery duration, but seldom employed category label information to further improve services representation. In addition, the existing researches always assume that the nonfunctional QoS characteristics are known, which is actually impossible in reality. In this paper, in order to address these problems, we present a trustworthy web services discovery framework named *** with the existing approaches, the TWSDisC has the two advantages. First, by using the prior category label information, the TWSDisC imports the supervised Inverse Category Frequency term weighting scheme to facilitate services representation. Second, the TWSDisC adopts the state-of-the-art matrix completion technique to predict the missing QoS values and correct the corrupted ones. Experimental results performed on the real-world web services collection demonstrate the feasibility of the proposed approaches. © 2012 Binary Information Press.

关键词： Websites

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A Coverage Control Algorithm Based on Probability Model for Three-Dimensional wireless sensor networks

A Coverage Control Algorithm Based on Probability Model for ...

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The Eleventh International Symposium on Distributed Computing and Applications to Business,Engineering and Science(DCABES2012)(第十一届分布式计算及其应用国际学术研讨会)(原名:电子商务、工程及科学领域的分布式计算和应用国际学术研讨会)

作者： Junqing Zhang Ruchuan Wang Yisheng Qian Qianyi Wang College of Computer Nanjing University of Posts and TelecommunicationsNanjing Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationChina

The main study of traditional probability coverage problem in wireless sensor networks(WSNs)is aiming at twodimensional space,however,most practical applications of wireless sensor network is placed in a three-dimensional sensor ***,probability model is introduced for three-dimensional *** paper presents a method that using Voronoi divide to control the Scheduling of the probability model nodes in the target ***,a coverage control algorithm based on probability model(PMCCA)is *** verify the effectiveness and the practice of PMCCA algorithm by comparing PMCCA algorithm to another algorithm in simulation experiment.

关键词： wireless sensor networks three-dimensional coverage probability model Voronoi divide

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A load-balanced data aggregation scheduling for duty-cycled wireless sensor networks

A load-balanced data aggregation scheduling for duty-cycled ...

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2012 4th IEEE International Conference on Cloud Computing technology and Science, CloudCom 2012

作者： Chen, Zhengyu Yang, Geng Chen, Lei Xu, Jian Wang, Haiyong Key Lab of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education Nanjing University of Posts AndTelecommunications Nanjing 210046 China College of Computer Science and Technology Nanjing University of Posts and Telecommunications Nanjing 210046 China School of Information Technology Jinling Institute of Technology Nanjing 211169 China

ISBN: (纸本)9781467345095

To bridge the gap between limited energy supplies of the sensor nodes and the system lifetime, duty-cycle wireless sensor networks (WSNs) with data aggregation are studied in this paper. We proposed a load-balanced and latency-efficient data aggregation scheduling for duty-cycled WSNs. A shortest path tree (SPT) is used as the routing structure for data aggregation scheduling. In SPT, parent-children assignments are well-designed to assign nodes from level h+1 to the parents at level h such that every parent has a balanced load, while reducing the sleep latency which is a period of time for a sender to wait for its parent to be active. Finally, through the simulation and comparisons, we prove the effectiveness of our approach. © 2012 IEEE.

关键词： Scheduling

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WSSecTool: A web service security analysis tool based on program slicing

WSSecTool: A web service security analysis tool based on pro...

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2012 IEEE 8th World Congress on Services, SERVICES 2012

作者： Fu, Wei Zhang, Yingzhou Zhu, Xianting Qian, Junyan College of Computer Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210003 China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing Jiangsu 210003 China Key Lab. of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing Jiangsu 210003 China Dept. of Computer Science and Technology Guilin Univ. of Electronic Technology Guilin 541004 China

ISBN: (纸本)9780769547565

With the development of web service, more and more attention has been drawn to web service in recent years. However, the damage caused by service security problems is becoming more and more serious nowadays. This paper develops a web service security analysis tool, WSSecTool, which is based on program slicing. This tool includes three modules namely slicing module, safety publishing module and testing module. Slicing module analyzes source codes of web service to generate method dependence graph (MDG). After MDG is generated, the tool slices MDG to detect the unsafe methods and the spread of them. Safety publishing module helps to hide unsafe methods to make them invisible to outer users after publishing. Testing module can test the services published by this tool to validate the correctness and feasibility of our analysis method. The experiments show that our tool is effective and practical. © 2012 IEEE.

关键词： Web services

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Genetic algorithm based coding aware routing for wireless mesh networks

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Advances in Information Sciences and Service Sciences 2012年第5期4卷 235-243页

作者： Shao, Xing Wang, Ruchuan Xu, He Huang, Haiping Sun, Lijuan College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China College of Computer Nanjing University of Posts and Telecommunications Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing 210003 China

network coding has been confirmed as a potential technology to improve performance of wireless mesh networks (WMNs) and a few network coding aware routings have been proposed. However, these mechanisms detect coding opportunities through local traffic pattern checking, which hardly obtains optimal routes. This paper proposes a Genetic algorithm based Coding Aware Routing (GCAR) for wireless mesh networks, which employs genetic algorithm to optimize routes and coding opportunities. In addition, the key ingredients in GCAR, e.g., chromosome representation, genetic operation of crossover and mutation, fitness function considering coding opportunity and interference, are carefully designed. Through simulations on a randomly generated wireless mesh network, GCAR is shown to find optimal routes within a short time, and achieve more improvements than the previously proposed methods on route setup time, throughput and load balancing.

关键词： Genetic algorithms

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Wavelet Transform-Based Distributed Compressed Sensing in wireless sensor networks

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China communications 2012年第2期9卷 1-12页

作者： Hu Haifeng Yang Zhen Bao Jianmin Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications Nanjing 210003 P. R. China National Mobile Communications Research Laboratory Southeast University Nanjing 210096 P. R. China

wireless sensor networks(WSN) are mainly characterized by a potentially large number of distributed sensor nodes which collectively transmit information about sensed events to the *** this paper,we present a Distributed Wavelet Basis Generation(DWBG) algorithm performing at the sink to obtain the distributed wavelet basis in *** on this basis,a Wavelet Transform-based Distributed Compressed Sensing(WTDCS) algorithm is proposed to compress and reconstruct the sensed data with spatial ***,we make a detailed analysis of relationship between reconstruction performance and WTDCS algorithm parameters such as the compression ratio,the channel Signal-to-Noise Ratio(SNR),the observation noise power and the correlation decay parameter by *** simulation results show that WTDCS can achieve high performance in terms of energy and reconstruction accuracy,as compared to the conventional distributed wavelet transform algorithm.

关键词： WSN distributed compressed sensing distributed wavelet transform

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(t, n) secret sharing scheme based on cylinder model in wireless sensor networks

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Journal of networks 2012年第7期7卷 1009-1016页

作者： Huang, Haiping Chen, Hao Wang, Ruchuan Mao, Qian Cheng, Renyuan Nanjing University of Posts and Telecommunications Department of Computer Nanjing University of Aeronautics and Astronautics Department of Computer Science and Technology Nanjing China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Ministry of Education/Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing China

Since the existence of characteristics of heterogeneity, limited energy, complexity and so forth, it turns into a research hot spot on the security mechanism of wireless sensor networks (WSN), especially the problems on the key management. On regard of the deficiency of extant secret sharing schemes, we develop a (t, n) threshold secret sharing scheme which is based on the cylinder model, including the procedures of master-key reconfiguration and sub-key updating. This scheme enables several nodes to be responsible for the security of key together, and by the mean time, we introduce a monitoring mechanism to improve the capability of anti-capturing. With the security theoretical analysis and the comparison with the performance on BPCGR, GKD simulation experiment, it reveals that our scheme satisfies the security requirement of key management in wireless sensor networks, and can effectively reduce the cost on communication and computation. © 2012 ACADEMY PUBLISHER.

关键词： wireless sensor networks

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