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检索条件"机构=Beijing Key Lab.of Network System Architecture and Convergence"

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The Relation of Energy-Consumption and the Population of People

The Relation of Energy-Consumption and the Population of Peo...

引用

International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： HongLiang Liang HongYan Cui Key Lab of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing P.R. China State Key Lab. Of Networking and Switching Technology MIT SENSEable City Laboratory

ISBN: (纸本)9781467392013

Reducing the energy consumption of cellular wireless access networks is not only beneficial for the global environment but also makes commercial sense for telecommunication operators, our research focus on how to put forward a constructive energy saving method in the precondition of guaranteed service quality for customer. In this paper, we based on the signaling data and location data coming from one of Chinese main operator's customers, trying to analysis the law that with the increase of users in a district, how their demand for energy change. Through the use of the law, operators can make a basis when conducting the construction of the base station at the time of city expansion and the redundancy phenomenon of construction of base station can be effectively reduced and then make contributions to energy saving, the law can also be used to provide a reference for city Planning Bureau when they conducting the urban planning and the construction of Green city and then get the purpose of optimal allocation of resources. In our study, we carry out the statistics of 1558053 users from Chongqing city, finally we found that with the increase of customer' number of each special district, the number of total traffic in the city present a change of power function.

关键词： Base stations Business Mathematical model Cities and towns Correlation Internet Urban planning

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Design and Realization of Cognitive Routing Resources Using Big Data Analysis in SDN

Design and Realization of Cognitive Routing Resources Using ...

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IEEE International Conference on Services Economics (SE)

作者： Hongyan Cui Yuchen Zhang Chenhang Ma Wei Lai Norman C. Beaulieu Stanislav Sobolevsky Yunjie Liu Key Lab of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing P. R. China MIT SENSEable City Laboratory State Key Lab. of Networking and Switching Technology

Future networks need to get knowledge of users' requirements by analyzing big data to achieve intelligence. OpenFlow is the first standard communications interface defined between the control and forwarding layers of a SDN architecture. So as to enhance network flexibility and availability, this paper presents a network resource allocation scheme equipped with the ability of user preference awareness, by connecting a cloud platform of analyzing users' data. We use the Hadoop platform to predict the rate and type of the incoming flows and employ them to get the lightest burden link through the LARAC algorithm. It has been verified on the BUPT SDN test bed that this system is capable of allocating the network resources dynamically by predicting the network load in advance. The results show that the proposed methods achieve better load balance than previous networks.

关键词： Routing Resource management Prediction algorithms Databases Control systems network topology Algorithm design and analysis

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WiFi band-stop FSS for increased privacy protection in smart building

WiFi band-stop FSS for increased privacy protection in smart...

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International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE)

作者： Xiong Xiong Weijun Hong Zhentao Zhao Li Deng Shufang Li College of Electronic and Information Engineering South China University of Technology Guangzhou China Beijing Key Lab. of Network System Architecture and Convergence Beijing Univ. of Posts and Telecommunications Beijing China

ISBN: (纸本)9781467374422

This paper proposes a periodic double ring strip frequency selective surface (FSS) with dual-band stop behavior. The FSS elements are designed to be etched on the transparent coating of glass substrate in smart buildings, which acts as a dual-band notch filter on 2.45GHz and 5.4GHz to avoid the leakage of WiFi signal outside the building. All the simulation parts are simulated by using High Frequency Structure Simulator (HFSS). The proposed FSS possesses 450MHz and 960MHz bandwidth with insertion loss more than -10dB around the two central operating frequencies 2.45GHz and 5.45GHz, respectively. Furthermore, the unit-cell structure provides a stable performance for both TE and TM polarizations with incident angles 0°-60°. A prototype of the proposed FSS is fabricated and measured. Good agreement between the simulated and measured results is obtained.

关键词： Frequency selective surfaces convergence Communication system security Wireless communication Prototypes

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Design of intelligent capabilities in SDN 4

Design of intelligent capabilities in SDN

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2014 4th International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace and Electronic systems, VITAE 2014 - Co-located with Global Wireless Summit

作者： Cui, Hongyan Zhu, Yabo Yao, Yuan Yufeng, Li Liu, Yunjie Beijing Key Lab. of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China State Key Lab. of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China Information Engineering University of the People's Liberation Army Zhenzhou China

ISBN: (纸本)9781479946266

Software-Defined networking (SDN) is an innovative and programmable networking architecture, representing the direction of the future network evolution. In this paper, we propose an architecture to introduce traffic classification techniques into the OpenFlow-based SDN network, which enables the network to be application-aware, so the network could distinguish various applications flows and know the requirements of different flows. Our new architecture also take advantage of the new intelligence to make the network forward traffic flows based flows' demands on bandwidth and delay, which could improve Quality of Service (QoS) of applications and optimize resource allocation all over the network. © 2014 IEEE.

关键词： Quality of service

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An efficient Virtual network embedding algorithm based on subgraph

An efficient Virtual Network embedding algorithm based on su...

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International Symposium on Wireless Personal Multimedia Communications (WPMC)

作者： Lan Li Jianya Chen Tao Huang Hongyan Cui Beijing Key Lab. of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781479964123

network virtualization, known as a promising technique, has emerged as an effective method to overcome the ossification of the Internet. By enabling the co-existence of multiple heterogeneous Virtual networks (VNs) over a shared infrastructure, network virtualization exhibits better flexibility. A crucial problem is Virtual network Embedding (VNE), namely embedding the virtual networks to the substrate network efficiently. Because it is an NP-hard problem, many heuristic algorithms have been developed. However, their efficiency is not high, which makes them unsuitable for real-time multimedia services. Thus, we propose an efficient virtual network embedding algorithm based on subgraph, which takes the load status of substrate links and the network connectivity into consideration. With the proposed algorithm, the computation complexity is reduced and the processing time for each request is shortened. Our simulation results reveal the better efficiency of the proposed algorithm compared to the existing ones.

关键词： Substrates Bandwidth Algorithm design and analysis Multimedia communication Virtualization Standards Complexity theory

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network traffic prediction based on Hadoop

Network traffic prediction based on Hadoop

引用

International Symposium on Wireless Personal Multimedia Communications (WPMC)

作者： Hongyan Cui Yuan Yao Kuo Zhang Fangfang Sun Yunjie Liu Beijing Key Lab. of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China

ISBN: (纸本)9781479964123

With the growing popularity of smart phones and the rapid development of Internet, the traditional network management system cannot adapt itself to the requirement intelligently. If we can use historic data to predict the trend of network traffic accurately, a better planning of network is more likely to be made and limited resource can be allocated and scheduled reasonably. However, massive amounts of data collected by network operators cannot be effectively processed. Therefore, in this paper, we design a network traffic prediction system based on Hadoop platform to process the real mobile network traffic data for a major network operator in China. With the Echo State network (ESN), a new kind of Recurrent Neural network (RNN) structure, the system can make accurate predictions of traffic variation trend for various network applications.

关键词： Predictive models Telecommunication traffic Data models Mobile computing Mobile communication Training Reservoirs

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Smart integration of cloud computing and MCMC based secured WSN to monitor environment

Smart integration of cloud computing and MCMC based secured ...

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International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic systems Technology (Wireless VITAE)

作者： Muhammad R. Ahmed Hongyan Cui Xu Huang School of Information Technology and Engineering University of Canberra Canberra Australia Beijing Key Lab. of Network System Architecture and Convergence Beijing University of Posts and Telecommunications China

Wireless Sensor network (WSN) is a low cost and multifunctional emerging technology. Its application ranges from military, health sector, environmental monitoring and industrial application. The maximum benefit of recent technology development can be achieved by integration internet (Cloud Computing) and secured real time data collection platform (secured-WSNs). In order to ensure its functionality especially in malicious environments, security mechanisms are essential in WSNs. Malicious or internal attacker has gained prominence and poses the most challenging attacks to WSN. So, for complete security internal attacks need to be handled. In this paper we proposed content-based publish/subscribe (pub/sub) broker model on the Cloud that integrates WSNs to Cloud efficiently and effectively. To secure WSNs we have proposed a new approach for detecting internal attack by using Markov Chain Monte Carlo (MCMC). It is an efficient real time algorithm. It is good for sensor network as it operates with no or incomplete classification information. Our result shows the output of the internal attacker evaluation.

关键词： Wireless sensor networks Markov processes Security Peer-to-peer computing Monte Carlo methods Cloud computing Monitoring

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Streaming media traffic characterizations analysis in mobile Internet

Streaming media traffic characterizations analysis in mobile...

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International Symposium on Wireless Personal Multimedia Communications (WPMC)

作者： Hongyan Cui Jia Wang Fangfang Sun Yunjie Liu Kwang-Cheng Chen Key Lab. of network system architecture and convergence Beijing University of Posts and Telecommunications State Key Lab. of Networking and Switching Technology Department of Electrical Engineering National Taiwan University

ISBN: (纸本)9781479964123

In spite of great efforts to expand the network infrastructure, it is still hard to catch the rapid growing need to serve tremendous subscribers with significant traffic. To effectively allocate the resource among mobile telecommunication operators and Internet Service Providers (ISP), grasping the highly dynamic traffic patterns can enable effective network planning and optimization for state-of-the-art mobile Internet. We employ traffic behavior analysis method to analyze and model the Internet traffic. Due to the subscribers' number of streaming media accounting over 60% of the entire traffic, we conduct a complete study to analyze this kind of traffic. By contrast, we also give the analysis result of another application, Instant Message (IM). Applying our newly proposed clustering methodology, we describe the regional characteristic of applications. This research subsequently enables more subtle and efficient mobile Internet operating modes to benefit operators and ISPs.

关键词： Streaming media IP networks Mobile communication Internet Cities and towns Servers Wireless communication

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Design of intelligent capabilities in SDN

Design of intelligent capabilities in SDN

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International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic systems Technology (Wireless VITAE)

作者： Hongyan Cui Yabo Zhu Yuan Yao Li Yufeng Yunjie Liu State Key Lab. of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing P. R. China Beijing Key Lab. of Network System Architecture and Convergence Information Engineering University of the People's Liberation Army Zhenzhou P. R. China

关键词： Switches Quality of service Ports (Computers) Protocols Bandwidth Computer architecture

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