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Science china(Information Sciences) 2010年第12期53卷 2631-2641页

作者： CAO Lei ,YANG DaCheng,YANG HongWen,FENG Chao & ZHANG Xin School of Information and Communication,beijing University of posts and {2.,beijing 100876,china School of Information and Communication Beijing University of Posts and Telecommunications Beijing China

This paper proposes two schemes,TAS-SD&RD and TAS-SR&RD,in which transmit antenna selection(TAS) strategies are combined with amplify-and-forward(AF) protocol in MIMO relaying scenario considering the destination has only limited channel state information(CSI) of the source-to-relay channel,and analyzes asymptotic performance of the two *** source,destination,and relay are equipped with multiple antennas,denoted by N S,N D,and N R,***,the paper derives the asymptotic outage probability and symbol error rate(SER) of the proposed schemes in the cooperative AF MIMO relaying *** analyses in high SNR regime lead to the conclusion that TAS-SD&RD and TAS-SR&RD can achieve full diversity order,N S N D + N R min{N S,N D },in some antenna configurations of the cooperative *** results that confirm our analyses are also presented in the paper.

关键词： cooperative amplify-and-forward(AF) multiple-input multiple-output(MIMO) relaying transmit antenna selection(TAS)

A REVOCATION SCHEME FOR THE CLOUD COMPUTING ENVIRONMENT

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A REVOCATION SCHEME FOR THE CLOUD COMPUTING ENVIRONMENT

A New Backup-VP Priority Restoration Methodfor ATM Survival Networks

2.11 IEEE International Conference on Cloud Computing and Intelligence Systems(CCIS2.11)

作者： Xiaobiao Li,Qiaoyan Wen state key {2. of networking and switching technology,beijing University of posts and telecommunications,beijing,china

In order to meet the authentication requirement of the revoking frequently and dynamic network environment,a revocation scheme for the cloud computing environment is *** entering,leaving,revoking and authentication of entities are implemented based on the public key cryptography and the secure dynamic one-way accumulator,and the cross-domain property is also *** results show that the proposed scheme is provable secure to realize the identity authentication,session key agreement and key update with entity secrecy and perfect forward secrecy *** the cloud computing environment,compared with the existing schemes,this solution has a higher level of security,better performance and more comprehensive problem solving for revocation.

关键词： cloud computing revocation authentication cross-domain

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The Journal of china Universities of posts and {2. 1995年第2期2卷 6-12页

作者： Chen Shanzhi Cheng Shiduan and Chen Junliang(state key {2. of switching technology of switching technology and Telecommunication Networksbeijing University of posts and telecommunications, beijing 100088, P. R. china)

In this paper, we propose a new backup-VP priority restoration method for ATM survival net-works. in order to improve the survivability performance of higher priority VPs in case of multi-failure under the minimum amout of spare capacity required. This method is a part of a hybrid restoration ,mechanism (to be presented later), which integrates a backup-VP, method￣[2. and a distributed flooding algorithm￣[3] in theATM layer. This method is a path restoration between VP terminal nodes, completes the restoration with bi-directional message transmission by ustng pre-assigned backup VP's in case of single failure, and improvesthe restoration time of higher priority VPs in case of multi-failure, but it should cooperate with anotherorganic part of the hybrid restoration mechanism-a floodting algorithm to restore the remaining lower priorityVPs. This method can use resource more efficiently and obtain a better cost-performance feature.

关键词： backup-VP restoration method priority restoration hybrid restoration mechanism,ATM survival neticorkts

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密码学原语中信任传递语义研究

通信学报 2008年第12期29卷 60-65页

作者：王励成潘耘谷利泽杨义先北京邮电大学网络与交换技术国家重点实验室信息安全中心中国传媒大学计算机学院

以可信计算和信任管理为背景,考察密码学原语中所包含的信任传递语义,进而借助于目前较为成熟的密码学理论为信任传递机理进行建模,提出了信任传递语义模型的雏形,分析了多种典型数字签名原语中的信任传递语义。分析结果表明所提模型具... 详细信息

以可信计算和信任管理为背景,考察密码学原语中所包含的信任传递语义,进而借助于目前较为成熟的密码学理论为信任传递机理进行建模,提出了信任传递语义模型的雏形,分析了多种典型数字签名原语中的信任传递语义。分析结果表明所提模型具有很强的概括能力。最后,展望了该模型在IP网络信任管理系统设计及分析中的潜在应用。

关键词：密码学原语信任传递语义

ON PERFORMANCE OF APPLICATION TRIGGERING ARCHITECTURE IN IMS NETWORK

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Journal of Electronics(china) 2009年第1期26卷 128-137页

作者： Xun Zhaoyong Liao Jianxin Wang Chun Wang Yulong Liu Jie state key {2. of networking and switching technology Beijing University of Posts and Telecommunications Beijing 100875 China EBUPT Information technology Co. Ltd. Beijing 100083 China

The modeling of Application Triggering Architecture （ATA） in the IP Multimedia Sub- system （IMS） is presented. The session setup delay and system throughput are employed as the measurement to investigate the performance of ATA and the Serving Call Session Control Punction （S-CSCF）. With theoretical analysis and simulation results, we find that, the number of the ASs （Application Servers）, the use of the subsequent Filter Criteria （sFC） and the arrival rate have heavy impact on the session setup delay and the S-CSCF is the major bottleneck in IMS network. The results are useful in constructing IMS network. At last, we propose several possible solutions to reduce the session setup delay and decrease the load of the S-CSCF.

关键词： Signaling performance Session setup delay Application triggering architecture Sessioninitiation protocol IP Multimedia Subsystem (IMS)

A Study on INAP Based on Abstract Syntax Notation. 1

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A Study on INAP Based on Abstract Syntax Notation. 1

A NOVEL INTEREST COVERAGE METHOD BASED ON JENSEN-SHANNON DIVERGENCE IN SENSOR NETWORKS

IEEE自然语言处理与知识工程国际学术会议

作者： Shu-bo ZHAN Wen-qiang YI state key {2. of networking and switching technology beijing University of posts and telecommunications beijing 100876

＜正＞Some technical issues are discussed on value-added application first. After a research on SIP （Session Initial Protocol） from the TALK angle （TALK: the communication that TCAP carries on to form a dialogue between a pair of nodes in the network, emphasizes two parties）, an INAP （Intelligent Network Application Part） over SIP protocol stack model is proposed here. As INAP is based on ASN.1 （Abstract Syntax Notation.1）, and SIP is based on text, then, some research about syntax and semantics are carried on. Relevant illustrations and applications about the protocol translation from an ASN.1-based agreement to a text-based agreement are also given in this paper.

关键词： ASN.1 XML SIP Intelligent Network Application Part intelligent network

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Journal of Electronics(china) 2007年第4期24卷 484-489页

作者： Wang Yufeng Wang Wendong College of telecommunications and Information Engineering Nanjin9 University of Posts and Telecommunications （ NUPT） Nanjin9 210003 China National laboratory of switching {2. ＆ Telecommunication Networks Beijing University of Posts and Telecommunications （ B UPT） Beijing 100875 China

In this paper, the idea of interest coverage is provided to form clusters in sensor network, which mean that the distance among data trends gathered by neighbor sensors is so small that, in some period, those sensors can be clustered, and certain sensor can be used to replace the cluster to form the virtual sensor network topology. In detail, the Jensen-Shannon Divergence (JSD) is used to characterize the distance among different distributions which represent the data trend of sensors. Then, based on JSD, a hierarchical clustering algorithm is provided to form the virtual sensor network topology. Simulation shows that the proposed approach gains more than 50% energy saving than Sta- tistical Aggregation Methods (SAM) which transmitted data gathered by sensor only when the differ- ence among data exceed certain threshold.

关键词： Sensor network Interest coverage Jensen-Shannon Divergence (JSD) Hierarchical clustering algorithm

On Effective Virtual Networks Interconnection

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china Communications 2016年第3期13卷 165-173页

作者： Huang Tao Huang Chengyuan Ma Ningning state key {2. of networking and switching technology BUPTChina beijing Advanced Innovation Center for Future lntemet technology Beijing 100876China

The network services today require extremely agile and mobile, however, the traditional IP infrastructures are so rigid that cannot fit services well. A way should be put forward to automate the network to improve responsiveness to change. SDN and network virtualization(NV) are two hottest approaches to make networking more automated and scalable to support virtualized and cloud environments. Network virtualization combines hardware and software network resources and network functionality into a single virtual network. SDN is created to simplify traffic management and achieve operational efficiencies by establish and exercising central control over packet forwarding. In this paper, we focus on the situation where SDN controller needs to connect two virtual networks temporarily. We put forward three algorithms to try to make this connection more effective and evaluate these three algorithms.

关键词： SDN network virtualization(VN) temporary connection

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关于Negabent函数的若干结论

通信学报 2011年第8期32卷 179-182页

作者：任传伦刘凤梅李忠献钮心忻杨义先北京邮电大学网络与交换技术国家重点实验室信息安全中心北京邮电大学网络与信息攻防技术教育部重点实验室华北计算技术研究所信息保障技术重点实验室天津市国瑞数码安全系统有限公司

利用二次不定方程的求解,研究了Negabent函数的判别和构造问题,给出了Negabent函数的一个直观判别条件和一种间接构造法,同时,证明了一类Maiorana-McFarland bent函数不是Negabent函数。

关键词：布尔函数 Nega-Hadamard变换 Negabent函数 bent函数