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Green cloud task-scheduling algorithm based on improved BPSO

Journal of Information and Computational Science 2014年第12期11卷 4301-4308页

作者： Ouyang, Zhiyou Wang, Kun Xu, Lili Key Lab. of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing China

Cloud computing is experiencing a rapid development since a large amount of data need to be addressed. How to carry on the reasonable task scheduling plays a vital role in the operating efficiency of cloud computing. This paper proposes a Green Cloud Task-scheduling Algorithm (GCTA) based on the improved Binary Particle Swarm Optimization (BPSO). This work avoids matrix operations by using a pipeline number for virtual machines and redefining the position and velocity of particle. Simulation results show that the proposed GCTA has less execution time, and reduces resource consumption accordingly. © 2014 Binary Information Press

关键词： Cloud computing

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A trusted QoS architecture for wireless multimedia sensor networks

A trusted QoS architecture for wireless multimedia sensor ne...

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作者： Ye, Qian Wu, Meng Wang, Yu Fei College of Computer Nanjing University of Posts and Telecommunications China Key Lab of 'Broadband Wireless Communication and Sensor Network Technology' of Ministry of Education College of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications China Research Institute of Information Technology and Communication China Electric Power Research Institute China

ISBN: (纸本)9783038351399

Developing trusted QoS architecture is important for wireless multimedia sensor networks considering various applications with different QoS requirements. First, the diverse multimedia traffic were analyzed and classified based on application requirements, service model, and multimedia coding method in wireless multimedia sensor networks. And the QoS requirements related to the multimedia traffic were also discussed. Then, a trust management framework was designed for cluster-based wireless multimedia sensor networks. The proposed framework can be used to next-hop selection in secure routing protocol. Finally, trusted QoS architecture was proposed. In the architecture, QoS manager observes and maintains information about QoS factors, and also responsible for QoS scheduling based on different QoS requirements. Trust Manager observes and maintains information about trust factors in WMSNs, and also responsible for trust computing based on different methods of trust factors aggregation. © (2014) Trans Tech Publications, Switzerland.

关键词： Quality of service

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Heterogeneous Data Integration and Fusion System Based on Metadata Conflict Algorithms in USPIOT

Heterogeneous Data Integration and Fusion System Based on Me...

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wireless communication and sensor network, Intl Conference on

作者： Jian-Min Bao Tian-Tian Hu Lin Pan He Xu Hai-Feng Hu Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781479970926

With the development of the Internet of Things, data islands and information redundancy which caused by massive heterogeneous data has become a challenge of many commercial applications and scientific research hot spots. First, we proposed and designed a MapReduce data integration and data fusion architecture, then, we established a stable information processing environment and a unified information retrieval interface for users, and then we analyzed MapReduce implementation processes, management processes, and the connection process. Meanwhile we proposed a conflict processing algorithms in processing heterogeneous redundant data problems by using metadata, and applied them to the processing of creating the virtual database using MapReduce technology, eliminating the redundant information to enhance the utilization of data space. Finally, we established the bench system to provide a unified heterogeneous data programming interface and memory management with heterogeneous data integration and fusion for users in our developed platform USPIOT (Ubiquitous Service Platform for Internet Of Things) and achieved better results.

关键词： Databases Data integration Humidity Data models Temperature distribution Internet of things

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A data placement strategy based on clustering and consistent hashing algorithm in cloud computing

A data placement strategy based on clustering and consistent...

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International Conference on communications and networking in China (CHINACOM)

作者： Qiang Li Kun Wang Suwei Wei Xuefeng Han Lili Xu Min Gao Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781479959716

To reduce time delay of processing data and improve the efficiency of cloud computing, a clustering algorithm based on the principle of minimum distance is proposed to place user-based and item-based data, update cluster centre and the threshold dynamically. Besides, consistent hashing is combined to solve the fault tolerance and scalability issues. In addition, Case-Based Reasoning (CBR) algorithm and item-based Coordination Filtering (CF) algorithms are used for filling sparse matrix to achieve better effect on the user-based clustering. Simulation results show that compared with data placement strategy based on K-means algorithm, this data placement strategy significantly improves clustering accuracy, greatly reduces delay of processing data and increases database scalability and redundancy, thereby improving the efficiency of cloud computing.

关键词： Clustering algorithms Servers Heuristic algorithms Delay effects Sparse matrices Scalability Cloud computing

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Secure Multi-period Routing in the Delay Tolerant networks

Secure Multi-period Routing in the Delay Tolerant Networks

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wireless communication and sensor network, Intl Conference on

作者： Jian-Min Bao Feng Wang Jun-Jie Zhang Shu Zhang Kun Wang Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781479970926

The Delay/Disruption Tolerant network (DTN) is characterized with intermittently connectivity and frequent partitions. Due to this, the DTN routing algorithm is very vulnerable to various kinds of malicious attacks. In this paper, combined with many other DTN forwarding approaches, we propose a multi-stage routing forwarding algorithm so as to further improve network throughput. To ensure the security advantages of multi-period routing, we also need to take the efficiency of the routing algorithm into account. The concept of trade-off coefficient is introduced in this paper in order to balance the security and efficiency. Through the security analysis and simulation result, we can reach the conclusion that by setting a reasonable trade-off factor, the mechanism can effectively resist the joint attack and also optimize the network performance.

关键词： Routing Security Throughput Analytical models Algorithm design and analysis network coding Encoding

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An improved binary PSO-based task scheduling algorithm in green cloud computing

An improved binary PSO-based task scheduling algorithm in gr...

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International Conference on communications and networking in China (CHINACOM)

作者： Lili Xu Kun Wang Zhiyou Ouyang Xin Qi Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)9781479959716

Cloud computing is experiencing a rapid development since a large amount of data need to be addressed. How to carry on the reasonable task scheduling plays a vital role in the efficiency of cloud computing. This paper proposes a green cloud task-scheduling algorithm (GCTA) based on the improved binary particle swarm optimization(BPSO). The main contribution of our work is avoiding matrix operations by using pipelined number for virtual machines and redefining the position and velocity of particle. Simulation shows that the proposed GCTA has less execution time, and reduces resource consumption accordingly.

关键词： Virtual machining Cloud computing Particle swarm optimization Scheduling algorithms Job shop scheduling

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Poster: Secret key generation from CFR for OFDM TDD systems over fading channels 9

Poster: Secret key generation from CFR for OFDM TDD systems ...

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9th International Conference on communications and networking in China, CHINACOM 2014

作者： Peng, Yuexing Alexandropoulos, George C. Wang, Peng Li, Yonghui Ha, Dac-Binh Key Lab of Universal Wireless Communication Beijing University of Posts and Telecommunications Beijing China Broadband Wireless and Sensor Network Group Athens Information Technology Peania Greece Centre of Excellence in Telecommunications University of Sydney Sydney Australia Institute of Research and Development Duy Tan University Danang Viet Nam

ISBN: (纸本)9781479959709

One of the basic problems in cryptography is the generation of a common secret key between two legitimate parties in order to prevent eavesdropping. In this paper, we develop an information-theoretic secret key generation method that exploits the physical layer properties of the multipath channel in orthogonal frequency division multiplexing (OFDM) systems with time division duplexing (TDD), and in particular the amplitude and phase of the estimated channel frequency response (CFR). Both the fast space decorrelation and the independency of the amplitude and phase of the multipath fading channel are used to generate the secret key, leading to increased secrecy bit rate and negligible secrecy leakage. The effect of the channel estimation error, delay and mobility are investigated for the presented method. Simulation results corroborate the increased performance of the proposed method over existing ones. © 2014 IEEE.

关键词： Orthogonal frequency division multiplexing

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International Journal of Internet Manufacturing and Services 2014年第4期3卷 341-357页

作者： Win, Nwe Nwe Htay Jianmin, Bao Gang, Cui Harbin Institute of Technology Harbin150001 China Myanmar Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing210003 China

This paper presents an efficient service similarity matchmaking method that considers complex QoS structures and attributes because sole consideration of QoS constraint becomes insufficient to handle sophisticated concepts described in service documents. To overcome the shortcoming of semantic exploitation in traditional matchmaking mechanisms, we propose a novel similarity matchmaking method that compares the equivalences between service advertisements and requirements based on three essential criteria called structure, attribute and constraint similarity. The aim is to reveal the complicated QoS semantic concepts embedded in QoS-based service documents and exploit them in matchmaking. The similarity score obtained from evaluation of each similarity criteria is also calculated and a service collection set with the highest similarity scores is provided to the user as the result. The simulation and experiment results prove that our matchmaking method surpasses the other service matchmaking and discovery techniques. Copyright © 2014 Inderscience Enterprises Ltd.

关键词： Semantics

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Lorentzian hard thresholding pursuit for compressed sensing in the presence of impulsive noise 4

Lorentzian hard thresholding pursuit for compressed sensing ...

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2014 4th IEEE International Conference on Information Science and technology, ICIST 2014

作者： Yun-Yun, Ji Zhen, Yang College of Communications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing Jiangsu Province210003 China Key Lab of 'Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing Jiangsu Province210003 China

ISBN: (纸本)9781479948086

The Lorentzian hard thresholding pursuit algorithm is proposed in this paper to achieve efficient reconstruction for compressed sensing in the presence of impulsive noise. In the Lorentzian hard thresholding pursuit algorithm, the minimum LL2 norm problem is solved with respect to a support which is obtained through the hard thresholding operator. The convergence and reconstruction performance of the Lorentzian hard thresholding pursuit algorithm is proved in theory in this paper. Experimental results show that the reconstruction performance of the Lorentizian hard thresholding pursuit algorithm is superior to the Lorentzian iterative hard thresholding algorithm which is also an effective algorithm for sparse reconstruction of compressed sensing in the impulsive noise environment. © 2014 IEEE.

关键词： Cost functions

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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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