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2011 Second Asian Himalayas International Conference on Internet (AH-ICI)最新文献

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An MSS-based non-blocking coordinated checkpointing approach for mobile computing systems 一种基于mss的移动计算系统非阻塞协调检查点方法
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113927
M. Asgari, M. Dehghan, M. Salehnamadi
Mobile computing systems consist of different components while Mobile Support Stations (MSSs) act a key role among others. This paper presents an efficient MSS-based non-blocking coordinated checkpointing scheme, in witch checkpointing overheads are forwarded to the MSSs and therefore workload of Mobile Hosts (MHs) would be reduced substantially. We also enhanced the proposed scheme to have much less propagating checkpoint requests and avoid avalanche effect. Simulation results show that compared to other existing algorithms, the scheme's average number of propagating requests and checkpoints are significantly lower so it would be suitable for mobile computing environment.
移动计算系统由不同的组件组成,而移动支持站(mss)在其中起着关键作用。本文提出了一种高效的基于mss的非阻塞协调检查点方案,该方案将检查点开销转发给mss,从而大大减少了移动主机(MHs)的工作量。我们还改进了该方案,使其具有更少的传播检查点请求并避免雪崩效应。仿真结果表明,与现有算法相比,该方案的平均传播请求数和检查点数明显降低,适合于移动计算环境。
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引用次数: 0
Joint power and subcarrier allocation in multi-hop OFDMA network: A cross-layer approach 多跳OFDMA网络中的联合功率和子载波分配:一种跨层方法
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113934
S. C. Jha, Umesh Phuyal, V. Bhargava
Resource wastage due to loss of a packet in a multi-hop wireless network greatly depends on number of hops the packet has already traveled. Hence, consideration of hop-count information is crucial while optimizing overall resource utilization of such network. Therefore, we propose a cross-layer resource allocation approach for an orthogonal frequency division multiple access based multi-hop network which jointly allocates subcarriers and transmit power prioritizing packets with higher hop-counts. Simulation results show that the proposed scheme is capable of minimizing network-wide resource wastage significantly without degradation in goodput and system outage performance.
在多跳无线网络中,由于数据包丢失而造成的资源浪费很大程度上取决于数据包已经走过的跳数。因此,在优化此类网络的整体资源利用率时,考虑跳数信息是至关重要的。因此,我们提出了一种基于正交频分多跳网络的跨层资源分配方法,该方法可以共同分配子载波并传输具有更高跳数的功率优先级数据包。仿真结果表明,该方案能够在不降低商品投放和系统停机性能的前提下,显著降低网络资源浪费。
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引用次数: 6
Cisco Smart Automation Tool 思科智能自动化工具
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113953
Radhika Srikanth, Suthikshn Kumar, S. A. Junjarampalli
This paper concentrates on the generic automation tool development for automating the process of validation of tools developed by Cisco. Cisco Smart Automation Tool can be used by engineers to automate the process of validating the tools that were developed by them. Cisco Smart Automation Tool reads the validation statements written by the developer or execution engineer from a text file or an excel sheet. These statements are written in plain English language following certain syntax.
本文主要研究了通用自动化工具的开发,以实现思科开发的工具验证过程的自动化。思科智能自动化工具可以被工程师用来自动化验证他们开发的工具的过程。思科智能自动化工具从文本文件或excel表格中读取开发人员或执行工程师编写的验证语句。这些语句是按照一定的语法用简单的英语编写的。
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引用次数: 1
SSENet-2011: A Network Intrusion Detection System dataset and its comparison with KDD CUP 99 dataset SSENet-2011:网络入侵检测系统数据集及其与KDD CUP 99数据集的比较
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113948
Dataset Vasudevan, E. Harshini, S. Selvakumar
In recent years the attack vectors in the network world have increased many fold with the increased usage of Internet and with the exponential growth of various applications. Network Intrusion Detection System (NIDS) is one of the most sought after system by security experts in safeguarding the network from both external and internal attacks. NIDS works mainly in two modes: Online and Offline. Online or real-time NIDS, such as Snort, Bro, etc., examines the packet structure to find intrusions, if any, and alerts the administrator. On the other hand, offline NIDS logs the packets flowing to and from the network, constructs features based on connections, and creates a dataset. Such NIDS datasets are used in research purposes for applying data mining, machine learning, evolutionary algorithms, etc., to detect attacks. KDD CUP 99 is one such widely used popular IDS dataset. KDD CUP 99 dataset is obsolete because many of the attacks performed to create the dataset do not exist now. Moreover, the features constructed do not pertain to network activities. It is a mixture of host based as well as network based features. So, the need for a new dataset, conforming to the present network activities and attack vectors, is inevitable. This motivated us to come out with a NIDS dataset, SSENet-2011 dataset, in this paper. SSENet-2011 dataset was constructed using Tstat tool. A real time experiment was performed, the network packets were captured, features were constructed, and the dataset was created. The created SSENet-2011 dataset was compared with the KDD CUP 99 dataset. From the experiments it is evident that a closed and secluded network such as SSENet and Tstat tool help researchers in developing and analyzing a new dataset which reflects the changing scenario of network activities.
近年来,随着Internet使用量的增加和各种应用程序的指数级增长,网络世界中的攻击向量增加了许多倍。网络入侵检测系统(NIDS)是安全专家为保护网络免受外部和内部攻击而追捧的系统之一。网络入侵防御主要有两种工作模式:在线和离线。在线或实时NIDS(如Snort、Bro等)检查数据包结构以发现入侵(如果有的话),并向管理员发出警报。另一方面,脱机NIDS记录进出网络的数据包,根据连接构建特征,并创建数据集。这些NIDS数据集用于研究目的,用于应用数据挖掘,机器学习,进化算法等来检测攻击。KDD CUP 99就是这样一个广泛使用的流行IDS数据集。KDD CUP 99数据集已经过时,因为为创建该数据集而执行的许多攻击现在都不存在。此外,所构建的特征与网络活动无关。它混合了基于主机和基于网络的特性。因此,需要一个符合当前网络活动和攻击向量的新数据集是不可避免的。这促使我们在本文中提出了一个NIDS数据集,SSENet-2011数据集。使用Tstat工具构建SSENet-2011数据集。进行了实时实验,捕获了网络数据包,构造了特征,并创建了数据集。将创建的SSENet-2011数据集与KDD CUP 99数据集进行比较。从实验中可以明显看出,封闭和隐蔽的网络,如SSENet和Tstat工具,有助于研究人员开发和分析反映网络活动变化情景的新数据集。
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引用次数: 52
A novel approach for improving search efficiency in unstructured peer to peer network 一种提高非结构化点对点网络搜索效率的新方法
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113946
M. Sendil, N. Nagarajan
P2P has become a popular application among the Internet. The searching of the content and file sharing is perhaps the most popular application. An application uses flooding as their prevailing resource location method for content searching and file sharing. The basic problem with the flooding mechanism is that it creates a large volume of unnecessary traffic in the network mainly because a peer may receive the same queries multiple times through different paths. In this paper, the performance of the searching is improved using super peer based search with improved searching technique (A novel approach). When the performance of the search method improves, then automatically the P2P traffic can be reduced.
P2P在互联网上已经成为一种流行的应用。内容搜索和文件共享可能是最流行的应用程序。应用程序使用泛洪作为内容搜索和文件共享的主要资源定位方法。泛洪机制的基本问题是,它在网络中创建了大量不必要的流量,主要是因为对等体可能通过不同的路径多次接收相同的查询。本文采用改进的超级对等搜索技术(一种新颖的搜索方法)提高了搜索性能。当搜索方法的性能提高时,P2P的流量就会自动减少。
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引用次数: 0
Developments in orthogonal frequency division multiplexing (OFDM) system-a survey 正交频分复用(OFDM)系统研究进展综述
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113955
M. Suma, B. Kanmani
In today's communication scenario, high data rate single-carrier transmission may not be feasible due to too much complexity of the equalizer in the receiver. To overcome the frequency selectivity of the wideband channel experienced by single-carrier transmission, multiple carriers can be used for high rate data transmission. Orthogonal frequency division multiplexing (OFDM) , is multicarrier system which has become a modulation in physical layer of next generation WiMAX, LTE system. In this paper effort is made to present challenges in OFDM and work done so far in channel equalisation and different transforms used in OFDM system.
在当今的通信场景中,由于接收机均衡器过于复杂,高数据速率的单载波传输可能不可行。为了克服单载波传输所经历的宽带信道的频率选择性,可以使用多载波进行高速率数据传输。正交频分复用(OFDM)是一种多载波系统,已成为下一代WiMAX、LTE系统的物理层调制方式。本文介绍了OFDM系统中存在的问题以及目前在信道均衡和不同变换方面所做的工作。
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引用次数: 6
QoS routing in MANET through cross-layer design with BER and modifying AODV 基于误码率和修改AODV的跨层设计的MANET QoS路由
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113940
R. Dahal, T. Sanguankotchakorn
Many shortest path routing protocols have been proposed neglecting the effect of lower layers. Here, the Modified Ad-hoc On Demand Distance Vector routing based on Bit Error Rate (MAODV-BER) is proposed, where the route discovery of AODV has been modified to achieve the stable route by obtaining Bit Error Rate (BER) information from physical layer through cross-layer approach. Due to the use of multimedia applications in Mobile Ad-hoc Networks (MANET) strict Quality of Service (QoS) is required. So, for QoS fulfillment, the bandwidth and delay requirements are added in each route message. Finally, the path having minimum BER as well as minimum hop count and fulfilling QoS requirements is selected.
目前提出的许多最短路径路由协议都忽略了底层的影响。本文提出了一种基于误码率的改进型Ad-hoc随需应变距离矢量路由(MAODV-BER),改进了maodv的路由发现方式,通过跨层方法从物理层获取误码率(BER)信息,从而获得稳定的路由。由于在移动自组织网络(MANET)中使用多媒体应用,对服务质量(QoS)提出了严格的要求。因此,为了实现QoS,在每个路由消息中都添加了带宽和延迟要求。最后,选择具有最小误码率和最小跳数并满足QoS要求的路径。
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引用次数: 10
Shortest Path Routing Protocol (SPRP) for Highly Data Centric Wireless Sensor Networks 高度数据中心无线传感器网络的最短路径路由协议(SPRP)
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113925
N. Doohan, D. Mishra, S. Tokekar
Wireless Sensor Networks (WSNs) are composed of many sensors which are densely or sparsely deployed to get the necessary information. They are constraint on resources such as energy, memory, computational speed and communications bandwidth. Particularly power is another major issue in WSNs, therefore main stress has been given to minimize the number of transmission to extend sensor service time in the network and support to discover multiple paths and multiple events simultaneously in any direction. Here we are proposing a new approach “Shortest Path Routing Protocol for Highly Data Centric Wireless Sensor Networks (SPRP)” which is based on the best part of protocols used for wired network i.e. TCP/IP. SPRP a new routing mechanism for wireless environment has been designed and proposed which is inspired from various routing like RIP, OSPF and a shortest path using Dijkstra's algorithm. Possible unforeseen scenarios in Wireless Sensor Networks domain like energy level status, damage of some node accidently/intensely has been considered and bypass to such occurrence has been integrated in the proposed solution.
无线传感器网络(WSNs)由许多传感器组成,这些传感器密集或稀疏地部署以获取必要的信息。它们受到能源、内存、计算速度和通信带宽等资源的限制。特别是功率是无线传感器网络的另一个主要问题,因此主要的重点是最小化传输次数以延长传感器在网络中的服务时间,并支持在任何方向上同时发现多条路径和多个事件。在这里,我们提出了一种新的方法“高度数据中心无线传感器网络的最短路径路由协议(SPRP)”,它基于有线网络中使用的协议的最佳部分,即TCP/IP。SPRP是一种新的无线环境下的路由机制,它的灵感来源于RIP、OSPF和Dijkstra算法的最短路径。考虑了无线传感器网络领域中可能出现的不可预见的情况,如能量水平状态、节点意外/剧烈损坏等,并在该方案中集成了对此类情况的绕过。
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引用次数: 10
MPEG-4 video transmission over IEEE 802.11e EDCA in multihop OLSR MANET using cross layer approach 基于IEEE 802.11e EDCA的多跳OLSR MANET跨层传输MPEG-4视频
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113936
Amit Kumar Tamang, T. Sanguankotchakorn
This research aims to improve the quality of MPEG-4 video transmission over MANET using cross layer paradigm that transfer the MPEG-4 video priority information from application to medium access control (MAC) layer. This information is used by proposed adopting dynamic mapping algorithm (ADMA) along with other information as access category (AC) congestion from MAC and hop count to destination from network layer to map the video frames in proper ACs. The proposed ADMA is compared with the existing Enhanced Distributed Channel Access (EDCA) and static mapping approaches based on Peak Signal-to-Noise Ratio (PSNR), Throughput and Average end-to-end delay evaluation parameters.
本研究旨在利用跨层模式,将MPEG-4视频优先级信息从应用程序传输到介质访问控制(MAC)层,以提高MPEG-4在MANET上的视频传输质量。采用动态映射算法(ADMA)将这些信息与MAC上的访问类别(AC)拥塞、网络层到目的地的跳数等信息一起映射到合适的AC中。基于峰值信噪比(PSNR)、吞吐量和平均端到端延迟评估参数,将ADMA与现有的增强分布式信道接入(EDCA)和静态映射方法进行了比较。
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引用次数: 7
A comparative study of synchronization algorithms in distributed systems 分布式系统中同步算法的比较研究
Pub Date : 2011-12-29 DOI: 10.1109/AHICI.2011.6113958
A.S. Kavitha Bai, J. Mungara
A distributed system is a collection of independent computers that appears to its users as a single coherent system and sharing the common resources. Multiple processes do not simultaneously access a shared resource so, requires the synchronization. We are having the four synchronization algorithms in distributed systems. This paper describes the pros & cons of each algorithm. In this we are comparing these four algorithms (Centralized, Decentralized, Distributed and Token Ring algorithms) with appropriate comparative measurements such as time complexity, delay, redundancy, scalability, failure rate & recovery. Based on this comparative study in future we are going to address the problems in the existing synchronization algorithms.
分布式系统是一组独立计算机的集合,它们在用户看来是一个统一的系统,共享公共资源。多个进程不能同时访问一个共享资源,因此需要同步。我们在分布式系统中有四种同步算法。本文介绍了每种算法的优缺点。在本文中,我们将这四种算法(集中式,分散式,分布式和令牌环算法)与适当的比较测量进行比较,例如时间复杂性,延迟,冗余,可扩展性,故障率和恢复。在此比较研究的基础上,我们将进一步解决现有同步算法中存在的问题。
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引用次数: 2
期刊
2011 Second Asian Himalayas International Conference on Internet (AH-ICI)
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