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2008 New Technologies, Mobility and Security最新文献

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Architecture for Consuming Long-Lived Mobile Web Services over Multiple Transport Protocols 在多种传输协议上消费长寿命移动Web服务的体系结构
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.25
Fahad Aijaz, S. Adeli, B. Walke
The concept of mobile Web services (Mob-WS) is catching pace within research communities due to rapid classification of mobile devices enabling pervasive environments. A Web service based middleware for mobile applications is a promising platform to accelerate the application development for mobile systems. This paper introduces a middleware for time independent Mob-WS that avoids the overheads of long durational synchronous communication. Details of communication architecture and interaction among the middleware components is presented and discussed. Due to the transport neutral nature of SOAP, the Bluetooth initial short-ranged transport protocol binding is briefly presented. Finally, some preliminary processing latencies are shown followed by conclusion.
移动Web服务(Mob-WS)的概念正在研究社区中迅速发展,因为移动设备的快速分类支持普及环境。基于Web服务的移动应用中间件是一个很有前途的平台,可以加速移动系统的应用开发。本文介绍了一种用于时间无关的Mob-WS的中间件,避免了长时间同步通信的开销。给出并讨论了中间件组件之间的通信体系结构和交互的细节。由于SOAP具有传输中立的特性,本文简要介绍了蓝牙初始短程传输协议绑定。最后,给出了一些初步的处理延迟,并给出了结论。
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引用次数: 1
Performance Analysis of Single Relay Cooperative ARQ protocol under Time Correlated Rayleigh Fading Channel 时间相关瑞利衰落信道下单中继协同ARQ协议性能分析
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.76
H. Cho, C. Lee, G. Hwang
In this paper, we analyze the performances of a cooperative ARQ protocol under Poisson arrivals and the time correlated Rayleigh fading channel environment. A two dimensional discrete time Markov chain is formulated for the analysis. Using the steady state analysis of the Markov chain, the average frame latency and the moment generating function of the service time of a frame are derived. We validate our analytical results by comparing them with simulation results. From our analysis, we show that the cooperative ARQ protocol outperforms the non-cooperative protocol. In addition, we see that the effect of time correlation of the fading channel is not negligible.
本文分析了一种协作ARQ协议在泊松到达和时间相关瑞利衰落信道环境下的性能。建立了二维离散时间马尔可夫链进行分析。利用马尔可夫链的稳态分析,导出了平均帧时延和帧服务时间的矩生成函数。通过与仿真结果的比较,验证了分析结果的正确性。分析表明,合作ARQ协议优于非合作ARQ协议。此外,我们看到衰落信道的时间相关的影响是不可忽略的。
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引用次数: 2
Decentralized Alerts Correlation Approach for DDoS Intrusion Detection 分布式DDoS入侵检测的分散告警关联方法
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.36
R. Khatoun, G. Doyen, D. Gaïti, R. Saad, A. Serhrouchni
Availability is one of the main characteristics of Internet security and hence attacks against networks increase trying to stop services on servers. Distributed denial of service attacks are very dangerous for computer networks and services availability. Various defense systems were proposed. Unfortunately, until now, there is no efficient solution. This paper presents a decentralized architecture for an intrusion detection approach. The central point of this paper is the alert correlation among Snort intrusion detection systems (IDS). We believe that this approach optimizes the detection performance in a completely distributed fashion by relying on Pastry overlay network as indexing and routing protocol. We propose novel approach that will be improved in the future work.
可用性是Internet安全的主要特征之一,因此针对网络的攻击增加了,试图停止服务器上的服务。分布式拒绝服务攻击对计算机网络和服务的可用性是非常危险的。提出了各种防御系统。不幸的是,到目前为止,还没有有效的解决方案。本文提出了一种分散的入侵检测体系结构。本文的研究重点是Snort入侵检测系统之间的警报相关性。我们认为这种方法通过依赖糕点覆盖网络作为索引和路由协议,以完全分布式的方式优化了检测性能。我们提出了一种新的方法,将在未来的工作中得到改进。
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引用次数: 7
A Bayesian Filter to Detect Misbehaving Nodes in MANETs 基于贝叶斯滤波的manet异常节点检测
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.7
Youcef Beghriche, V. Toubiana, H. Labiod
Composed of mobile nodes, MANETs rely on the entire collaboration of nodes to provide routing and forwarding functions. Most MANET security solutions identify and exclude malicious and selfish nodes. These mechanisms rely on local monitoring tools to detect untrustworthy nodes and then spread trust information through recommendations. In this paper we apply a Bayesian model [1] to improve MANET security. We classify nodes behavior relying on a decision based on a probabilistic Bayesian model. The novelty of our approach is that it classifies nodes based on distant observations. We describe statistical parameters like Accuracy, Error and the Total Cost Ratio that are used to evaluate the efficiency of the filter through a set of simulations of an attacked pure ad hoc network.
manet由移动节点组成,依靠节点的整体协作来提供路由和转发功能。大多数MANET安全解决方案识别和排除恶意和自私的节点。这些机制依靠本地监控工具检测不可信节点,然后通过推荐传播信任信息。在本文中,我们应用贝叶斯模型[1]来提高MANET的安全性。我们根据基于概率贝叶斯模型的决策对节点行为进行分类。我们的方法的新颖之处在于它根据远距离观测对节点进行分类。我们描述了统计参数,如准确性,误差和总成本比,用于通过一组受攻击的纯自组织网络的模拟来评估滤波器的效率。
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引用次数: 8
Efficiency of PRI and WRR DiffServ Scheduling Mechanisms for Real-Time Services on UMTS Environment UMTS环境下实时业务的PRI和WRR DiffServ调度效率研究
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.40
N. Lopes, M. J. Nicolau, Alexandre J. T. Santos
The next generation of mobile phones will be probably all-IP based enabling users to access Internet services. In order to make this possible a satisfactory quality of service, at least equal to the fixed Internet, must be ensured. To achieve this goal an end-to-end QoS system must be constructed. Another fact is the dominance of IP over other technologies due, in large measure, to its characteristic of working with heterogeneous technologies. Consequently, being IP the common denominator on a heterogeneous environment, it is important to develop end-to-end IP QoS guarantees for the different applications over distinct access technologies. This is particularly important for cellular wireless networks due to the ever growing expansion of mobile phone users. One way to contribute to this goal is to apply DiffServ QoS mechanisms to UMTS technology in order to model an End-to-End QoS communication system. A mapping of DiffServ CodePoints into UMTS classes can be applied in order to get efficient PHB configurations. This paper proposes an architecture to support end-to-end quality of service to several application services running on mobile UMTS user agents and communicating with servers located in a wired internet. The proposed architecture is based on a DiffServ model, where QoS parameters are set either by the user agent or by the SGSN. In particular, RED queue management and PRI or WRR scheduling policies are enforced. Different UMTS traffic classes are mapped into different DiffServ parameters. The performance of this architecture has been evaluated by simulation using NS, assuming different network load scenarios. In particular, the delay and packet loss experienced by VoIP, Video, FTP and HTTP traffic are evaluated in the cases of PRI and WRR scheduling policies, and compared to those measured when DiffServ is not implemented. Finally, a revenue function to estimate the profits that an ISP could expect by using a DiffServ implementation on IP UMTS core routers is proposed.
下一代移动电话可能是全ip的,使用户能够访问互联网服务。为了使这成为可能,必须确保服务质量令人满意,至少与固定互联网相当。为了实现这一目标,必须构建端到端的QoS系统。另一个事实是IP在其他技术上的主导地位,在很大程度上是由于其使用异构技术的特性。因此,由于IP是异构环境中的公分母,因此为不同访问技术上的不同应用开发端到端IP QoS保证是很重要的。由于移动电话用户的不断增长,这对蜂窝无线网络尤其重要。实现这一目标的一种方法是将DiffServ QoS机制应用于UMTS技术,以便对端到端QoS通信系统进行建模。为了获得有效的PHB配置,可以应用DiffServ代码点到UMTS类的映射。本文提出了一种体系结构,以支持运行在移动UMTS用户代理上的多个应用服务的端到端服务质量,并与位于有线互联网中的服务器进行通信。所建议的体系结构基于DiffServ模型,其中QoS参数由用户代理或SGSN设置。特别是,RED队列管理和PRI或WRR调度策略被强制执行。不同的UMTS流量类映射到不同的DiffServ参数。在不同的网络负载情况下,使用NS对该体系结构的性能进行了仿真评估。特别地,评估了VoIP、Video、FTP和HTTP流量在PRI和WRR调度策略下的延迟和丢包情况,并与未实现DiffServ时的情况进行了比较。最后,提出了一个收益函数来估计ISP通过在IP UMTS核心路由器上使用DiffServ实现所期望的利润。
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引用次数: 12
Query Optimization in a Mediator for Digital Libraries 面向数字图书馆的中介查询优化
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.82
Faouzia Wadjinny, D. Chiadmi
Digital libraries are more and more available on the web. Unfortunately, their heterogeneity and distribution make retrieving information from them a difficult process. To overcome these difficulties, several solutions have been proposed. We adopt a virtual data integration approach based on mediation to access various digital libraries. In this context, a query posed to the mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sources of diverse and limited query capabilities, not all of the translations are feasible. In this paper, we study the problem of finding feasible and efficient query plans to retrieve data from digital libraries. We present the formalism that we use to describe data sources capabilities. We propose an algorithm for producing equivalent query plans and a cost model for choosing the optimal plan.
网络上的数字图书馆越来越多。不幸的是,它们的异质性和分布使得从它们中检索信息成为一个困难的过程。为了克服这些困难,提出了几种解决办法。我们采用一种基于中介的虚拟数据集成方法来访问各种数字图书馆。在此上下文中,需要将向中介提出的查询转换为对底层数据源的查询序列。在异构环境中,由于来源多样且查询功能有限,因此并非所有翻译都是可行的。本文研究了如何找到可行的、高效的查询方案来实现数字图书馆的数据检索。我们给出了用于描述数据源功能的形式化描述。我们提出了生成等效查询计划的算法和选择最优计划的成本模型。
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引用次数: 0
Impact of IPSec on the Performance of the IEEE 802.16 Wireless Networks IPSec对IEEE 802.16无线网络性能的影响
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.51
E. Barka, K. Shuaib, H. Chamas
The IEEE Standard 802.16 (WiMax) promises to provide wireless broadband access to homes, businesses and core telecommunication networks worldwide. However, security is a key concern to the success of IEEE Standard 802.16. There has been extensive work on improving the security of IEEE Standard 802.16 for both fixed and mobile networks in PMP mode, but thus far there is scarcity of research on security in IEEE 802.16, and its impact on the performance on such networks. In this Paper, we investigate the impact of security, specifically, IPsec on the performance of the 802.16. We explore and analyze the impact of different implementations of encryption techniques, using the two IPsec transmission modes, Our analysis is based on simulation, using the well-known Qualnet software.
IEEE标准802.16 (WiMax)承诺为全球家庭、企业和核心电信网络提供无线宽带接入。然而,安全是IEEE标准802.16成功的关键问题。针对固定网络和移动网络在PMP模式下提高IEEE 802.16标准的安全性已经做了大量的工作,但到目前为止,关于IEEE 802.16的安全性及其对此类网络性能影响的研究还很缺乏。在本文中,我们研究了安全性,特别是IPsec对802.16性能的影响。我们使用两种IPsec传输模式,探索和分析了不同加密技术实现的影响,我们的分析是基于仿真,使用知名的Qualnet软件。
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引用次数: 7
A New Link Adaptation Scheme for IEEE 802.11 WLANs 一种新的IEEE 802.11 wlan链路适配方案
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.11
A. Rebai, Mariem Fliss, S. Jarboui, S. Hanafi
The IEEE 802.11 WLAN becomes more applied for multimedia traffics that are very strict in terms of link rate and transmission delay performance. In this paper, the authors will study link adaptation requirements to allow the requested multimedia quality-based communications. The efficiency of rate control diagrams is linked to the fast channel variation response. A new dynamic time-based link adaptation mechanism, called MAARF (modified adaptive auto rate fallback), is proposed. Beside the transmission frame results, the new model implements round trip time (RTT) mechanism to choose adequately instantaneous link rate. This proposed model is evaluated with ARF (auto rate fallback) and AARF (adaptive ARF) schemes. Simulation results are given to illustrate the quality improvement of transmission link over Wi-Fi networks.
IEEE 802.11无线局域网越来越多地应用于对链路速率和传输延迟性能要求非常严格的多媒体业务。在本文中,作者将研究链路适应要求,以允许所要求的基于多媒体质量的通信。速率控制图的效率与快速信道变化响应有关。提出了一种新的基于时间的动态链路自适应机制MAARF (modified adaptive auto rate fallback)。除了传输帧结果外,新模型还实现了往返时间(RTT)机制,以选择适当的瞬时链路速率。采用自适应ARF (ARF)和自适应ARF (ARF)两种方案对该模型进行了评价。仿真结果说明了Wi-Fi网络传输链路质量的提高。
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引用次数: 6
Energy Adaptive Approach In a Multi-Channel Dissemination-Based Network 多通道传播网络中的能量自适应方法
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.44
Ahmad S. Al-Mogren
It is essential to manage data in the wireless environment. Through the use of dissemination technique, data may be retrieved by wireless users in an efficient manner. In this paper, I show a description of an architecture which is designed to provide a power-saving for the mobile clients' units in a multichannel dissemination-based network. I show how a suitable system fits in the overall telecommunication network. The aim of the system is to allow the clients to get the needed data in an efficient way, and at the same time to allow the participation of clients in updating the content of the disseminated data. A performance study shows that the power consumption, space overhead, and response time associated with the suggested approach is far less than other previous techniques.
在无线环境中管理数据是必不可少的。通过使用传播技术,无线用户可以有效地检索数据。在本文中,我展示了一种架构的描述,该架构旨在为基于多通道传播的网络中的移动客户端单元提供节能。我将展示一个合适的系统如何适应整个电信网络。该系统的目的是使客户能够以一种有效的方式获取所需的数据,同时允许客户参与更新传播数据的内容。一项性能研究表明,与建议的方法相关的功耗、空间开销和响应时间远低于以前的其他技术。
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引用次数: 7
AOnesC: An Aspect-Oriented Extension to nesC 一个面向方面的nesC扩展
Pub Date : 2008-11-25 DOI: 10.1109/NTMS.2008.ECP.24
E. Lakshika, C. Keppitiyagama, Dulan Wathugala
Aspect-oriented programming (AOP) is a programming paradigm which enhances the concept of "separation of concerns" by introducing a mechanism to modularize crosscutting concerns in a better way. While AOP based extensions have earned a superior popularity in various domains, for some domains, AOP is still immature. The domain of wireless sensor networks is such an area where application of AOP techniques is lacking. Currently, almost all the programming languages for implementing wireless sensor networks do not provide mechanisms to modularize crosscutting concerns in a precise way. In this paper, we present the design and development of AOnesC language, which is an aspect-oriented extension to nesC language. Since nesC language plays a major role in the domain of wireless sensor networks, we expect this AOP based extension would enable sensor network application developers to gain benefits of AOP techniques.
面向方面编程(AOP)是一种编程范例,它通过引入一种机制以更好的方式模块化横切关注点,从而增强了“关注点分离”的概念。虽然基于AOP的扩展已经在各个领域获得了极大的普及,但是对于某些领域,AOP仍然不成熟。无线传感器网络领域是AOP技术应用较少的领域。目前,几乎所有用于实现无线传感器网络的编程语言都没有提供精确模块化横切关注点的机制。本文介绍了面向方面的nesC语言的扩展——AOnesC语言的设计与开发。由于nesC语言在无线传感器网络领域扮演着重要的角色,我们期望这种基于AOP的扩展将使传感器网络应用程序开发人员能够获得AOP技术的好处。
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引用次数: 3
期刊
2008 New Technologies, Mobility and Security
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