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IEEE International Conference on Progress in Informatics and Computing (PIC)

作者： Jiuhu Zheng Huanyan Qian Lie Wang School of Information Technology Jiangsu Institute of Commerce Nanjing Jiangsu China School of Computer Science and Engineering Nanjing University of Science and Technology Nanjing Jiangsu China School of Computer Science and Engineering Nanjing University of Science and Technology Nanjing Nanjing Jiangsu China National Mobile Communications esearch Laboratory Southeast University Nanjing Jiangsu China Ministry of Education Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Nanjing Jiangsu China

In the view of the DV-Hop positioning algorithm which relies on the distance vector and beacon nodes, several aspects are improved: the average hop distance and hop count are corrected; a method to detect the abnormal distribution of beacon nodes is used to avoid the influence of the abnormal distribution on the positioning performance. The proposed algorithm is simple and effective. Simulation results show that compared with the traditional DV-Hop algorithm, the performance of the proposed algorithm is greatly improved. The performance is even even superior to that of the algorithm mentioned in literature [10].

关键词： wireless sensor networks Mobile communication Hardware Maximum likelihood estimation Mathematical model Computer science broadband communication

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A trust computation model for node-disjoint multipath routing in multimedia sensor networks

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Energy Education Science and technology Part A: Energy Science and Research 2014年第6期32卷 5735-5738页

作者： Ye, Qian Wu, Meng Wang, Yufei Nanjing University of Posts and Telecommunications College of Computer No.66 Xin Mofan Road Nanjing China Nanjing University of Posts and Telecommunications Key Lab of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education College of Telecommunications and Information Engineering No.66 Xin Mofan Road Nanjing China China Electric Power Research Institute Research Institute of Information Technology and Communication No.8 Nan Rui Road Nanjing China

Security is an important factor which influences the application of the wireless multimedia sensor networks. And Multipath routing is an effective approach to transmit large multimedia dada in sensor networks. This paper focuses on trust evaluation of node-disjoint multiple routing paths created by multipath routing protocols. First, the trust level of single sensor node is calculated based on packet-drop rate. Then, based on the trust value of single sensor node, the trust level of the single routing path is evaluated. And the trust value fusion method for multiple routing paths is proposed. The overall of a group of routing paths increases monotonically, as the more trusted routing paths are added into the routing path group. Finally, the proposed trust computation methods are well analyzed. The analysis and simulation results shows that our trust computation model can effectively evaluate the trust level of the node-disjoint multiple routing paths, and affords a new secure reference for designing multipath routing protocols. © Sila Science. All Rights Reserved.

关键词： sensor nodes

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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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第11届分布式计算及其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 Telecommunications Nanjing Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education

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 networks. Therefore, probability model is introduced for three-dimensional WSNs. This paper presents a method that using Voronoi divide to control the Scheduling of the probability model nodes in the target area. Also, a coverage control algorithm based on probability model(PMCCA) is proposed. We 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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Secure Efficient Routing Based on network Coding in the Delay Tolerant networks

Secure Efficient Routing Based on Network Coding in the Dela...

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2014 IEEE 5th International Conference on Software Engineering and Service Science

作者： Jianmin Bao Shu Zhang Junjie Zhang Kun Wang Haifeng Hu Key Lab of Broadband Wireless Communication and Sensor Network Technology （Nanjing Univ. of Posts and Telecommunications） Ministry of Education Nanjing University of Posts and Telecommunications

The Delay/Disruption Tolerant network（DTN） is characterized with long delay,high bit-error rate,intermittent connectivity and frequent *** to this,network coding is introduced to improve its transmission performance *** DTN routing algorithms based on network coding have been ***,they are susceptible to various malicious *** this paper,we propose a new kind of networking scheme suitable to the DTN,which can resist the eavesdropping attacks to a certain ***,we establish a DTN network model based on the packet path optimization allocation algorithm and redefine the packet format to meet the algorithm ***,to resist the dropping attacks,the source node dynamically adds redundancy factors at the certain *** the pollution attacks and the data tampering attacks can almost be resisted by means of mutual authentication between intermediate *** approach avoids the traditional anti-tampering attack algorithm over-reliant on the source *** security analysis and simulation results show that our scheme can effectively resist the joint attacks and optimize the network performance.

关键词： delay tolerant networks（DTNs） network coding joint-attack

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Spectrum Sensing Via the Best Stochastic Resonance

Spectrum Sensing Via the Best Stochastic Resonance

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2014 International Conference on Electrical and Electronic Engineering(EEE 2014)

作者： Deng-yin ZHANG Hui SUN Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunication Ministry of Education Sci-tech Park of Internet of Things Nanjing University of Posts and Telecommunication

When existing spectrum sensing algorithm detects low SNR signal,detection performance is not *** paper proposes a spectrum sensing algorithm based on the best stochastic *** algorithm introduces the stochastic resonance theory and changes system parameters adaptively through sensing environment *** analysis and simulation results show the algorithm has a good detection performance while sensing low SNR signal.

关键词： Cognitive radio Spectrum sharing Stochastic resonance Primary user signal Bistable system

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Heterogeneous network data acquisition and storage solution in cloud environment

Heterogeneous network data acquisition and storage solution ...

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The 2014 5th International Conference on Environmental Science and Information Application technology(ESIAT 2014)

作者： Chunshao Ren Jiandong Yang Wei Mao Dengyin Zhang Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationMinistry of Education Sci-tech Park of Internet of Things Nanjing University of Posts and Telecommunication

There exist a number of heterogeneous net units in network in cloud *** problem faced by current network management is how to collect and store data generated by net *** solve this problem,this paper proposes an acquisition and storage solution of huge network management data based on *** the characteristics of heterogeneous network management data and advantages of HBase storage into consideration,an integrated and event-driven solution is made to realize huge network management data acquisition and *** has been proven by practice that by distributed computing of Hadoop and distributed columnar storage of HBase,the solution has secured efficient parallelization of acquisition and storage of the *** performance can be linearly increased when the number of acquisition servers is *** theory,over 13 acquisition servers can run a poll to tens of thousands of net unit device in heterogeneous network within 3 minutes.

关键词： net HBase Heterogeneous network data acquisition and storage solution in cloud environment Hadoop

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An improved static B+ tree index adaptive to cloud environment for analytic application

An improved static B+ tree index adaptive to cloud environme...

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The 2014 5th International Conference on Environmental Science and Information Application technology(ESIAT 2014)

作者： Mingxiang Wan Chunshao Ren Dengyin Zhang Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationMinistry of Education Sci-tech Park of Internet of Things Nanjing University of Posts and Telecommunication

B+ Tree is a special balanced multiway tree with flexible structure and node pages linking to each *** supports not only rapid random query,but also range *** B+ Tree index cannot be directly migrated since data storage architecture is different in cloud *** on the characteristics of cloud computing master-slave architecture and combined with the characteristics of the columnar storage in the cloud environment,this paper proposes an improved secondary index of B+ *** this index,primary key still uses key-Value style hash index,which can not only get high search efficiency,but also maintain load balance;other property columns will apply improved B+ Tree index,which can solve the problem of high time complexity when querying non-primary key and also support range query of non-primary key property.

关键词： An improved static B tree index adaptive to cloud environment for analytic application

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QoE-driven scheme for multimedia content dissemination in Device-to-Device communication

QoE-driven scheme for multimedia content dissemination in De...

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International wireless communications and Mobile Computing Conference, IWCMC

作者： Aiqing Zhang Liang Zhou Lei Wang Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications China National Mobile Communications Research Laboratory Southeast University

Device-to-Device (D2D) communication has been proposed to be a promising data offloading solution in the coming big data age, with multimedia dominating the digital contents. As quality of experience (QoE) is the major determining factor in the success of new multimedia applications, we novelly propose a QoE-driven cooperative content dissemination (QeCS) scheme in the paper. Specifically, all the users predict the QoE of the potential connections characterized by mean opinion score (MOS) and send the results to the content provider (CP). Then CP formulates a weighted oriented graph based on the network topology and MOS of each potential connection. By factorizing the graph, the content dissemination fashion is established through seeking 1-factor with the maximum weight thus achieving maximum total user MOS.

关键词： Peer-to-peer computing Receivers Transmitters Yttrium Multimedia communication Mobile communication Graph theory

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Practical quantum key distributions with single-photon-added coherent sources

Practical quantum key distributions with single-photon-added...

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第十六届全国量子光学学术报告会

作者： Dong Wang Zheng-Fu Han Guang-Can Guo Feng Zhu Qin Wang Key Lab of Quantum Information University of Science and Technology of ChinaCAS Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry of Education

We propose new schemes on implementing the single-photon-added coherent source in the quantum key *** apply the source in either the standard BB84 protocol or the new proposed measurement-device-independent quantum ke... 详细信息

关键词： Practical quantum key distributions with single-photon-added coherent sources

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An Improved Outdoor Camera Calibration Method Based On EKF

An Improved Outdoor Camera Calibration Method Based On EKF

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2014 International Conference on Computer,communications and Information technology(CCIT 2014)

作者： Shaopo Zhu Dong Hu Education Ministry's Key Lab of Broadband Wireless Communication and Sensor Network Technology Jiangsu Province's Key Lab of Image Procession and Image Communications Nanjing University of Posts and Telecommunications

ISBN: (纸本)9781629939865

An improved outdoor camera calibration method based on Extended Kalman Filter(EKF) is proposed in this paper. GPS coordinate system is introduced to establish world coordinate system in the calibration procedure. According to the characteristics of GPS coordinate converted to plane coordinate and the camera calibration model, we establish the mapping relations of reference points between image plane coordinate and the world coordinate. Further, we consider the world coordinate error, set the world coordinates as the measure quantities, use the method of EKF to get the optimal estimation of intrinsic and extrinsic camera parameters, in EKF the camera's intrinsic and extrinsic parameters are set as state variables, the transformation equations of image coordinate to the world coordinate are set as the measurement equations, and we let the observed feature points' image coordinates and corresponding world coordinates as the input of the filter. Experimental results confirmed that the proposed method with high precision.

关键词： camera calibration,GPS coordinate,EKF,world coordinate error

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