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IEEE Workshop on Advanced Research and technology in Industry Applications (WARTIA)

作者： Qiuping Xu 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 Nanjing CN

To alleviate the encoder computation load in inter-frame coding of the High Efficiency Video Coding (HEVC), a new fast inter-frame prediction mode decision method is proposed by reducing the number of execution of the advanced motion vector prediction (AMVP) mode. Based on the correlation analysis between the corresponding located CU (Coding Unit) in the previous frame and the current CU, we first select the best one inter prediction mode by just performing merge mode decision process and then only perform the AMVP process on the selected one. Experimental results show that the proposed scheme provides 33.04% encoder time savings in Random Access (RA) configuration and 38.05% time savings in Low Delay (LD) configuration on average, and its increment in bit rate is 0.87% in RA and 1.29% in LD compared to the default encoding scheme in HM10.0.

关键词： Encoding Correlation Video coding Vectors Bit rate Algorithm design and analysis Copper

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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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Power distribution algorithm based on game theory in the femtocell system

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The Journal of China Universities of Posts and Telecommunications 2013年第2期20卷 42-47页

作者： MU Shi-yao ZHU Qi Jiangsu Key Lab of Wireless Communications Key Lab on Wideband Wireless Communications and Sensor Network Technology of Ministry of Educations Nanjing University of Posts and Telecommunications

This paper studies the power control problem in femtocell system based on Nash non-cooperative game theory. It designs an utility function taking fem stations＇ transmit power as variable and relates it to the requirements of macro users＇ and fem users＇ signal to interference plus noise ratio （SINR）. The utility also takes the impact of fem stations＇ location into account and improves the fairness of non-cooperative game. On this basis, this paper proposes a distributed power control algorithm and proves the existence and uniqueness of Pareto optimal point. The simulation results show that the algorithm improves the convergence speed and system performance through improving users＇ SINR.

关键词： Nash non-cooperative game power control utility function

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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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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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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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IEEE International Conference on Software Engineering and Service Sciences (ICSESS)

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) Nanjing University of Posts and Telecommunications Nanjing Jiangsu Province China

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

关键词： Routing network coding Delays Mathematical model Encoding Equations Security

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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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A Model-Matching Algorithm Based on Improved BP over Out-of-order Streams

A Model-Matching Algorithm Based on Improved BP over Out-of-...

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IEEE International Conference on communications

作者： Kun Wang Linchao Zhuo Lei Shu Yanfei Sun Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China Guangdong Provincial Key Lab. of Petrochemical Equipment Fault Diagnosis Guangdong University of Petrochemical Technology Guangdong China

Due to the explosive increment of data in big data era, it is a challenging task to analyze and extract meaningful data for users. Data needs to be timely operated because of the time sensitivity, so it faces enormous pressure in storage and computing. To deal with the problem that it is hard to achieve valuable information from out-of-order streams over big data in short time, a model-matching algorithm based on improved BP (Back Propagation) is proposed. In the algorithm, the matching model is set dynamically. Information is extracted for users according to the order of data's arriving time. Furthermore, the algorithm parameters are automatically adjusted in the process of learning and matching. Accordingly, the responding speed of learning is accelerated and the time of matching reduces. In the simulation, a group of optimum parameters of improved BP are achieved by using self-adapting adjusting mechanism. The threshold (TH), connecting weight (CW) and learning rate (LR) are equal to 1.5, 3 and 1, respectively. We implement our model-matching algorithm on 10000 sets of out-of-order streams with these parameters. Results indicate that the proposed algorithm can obviously improve the accuracy and speed of matching and achieve better stability.

关键词： Heuristic algorithms Mathematical model Out of order Convergence Accuracy Data models Software algorithms

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