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274 results for “Packet”
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Research ArticleOpen accessIn the keywordsA New Enhancement for Security Mechanism in RoutersKhalid Khanfar, Riyad Khanfar, Walid Al-Ahmad, Eyas El-QawasmehProblem statement: Routers are very important components in any network. They control and organize the in-bound traffic and the out-bound traffic. Controlling a router by an intruder leaves the entire network unsecured. In different studies, Router security was discussed from different aspects such as the routing protocol, the firewall. In this research, we present a new effective security mechanism for … …Journal of Computer Science, Vol. 4, Issue 7 · 31 Jul 2008 · 7,173 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Q-Routing Protocol Using Self-Aware Approach for Mobile Ad hoc NetworksAmal Alharbi, Abdullah Al-Dhalaan, Miznah Al-RodhaanMobile Ad hoc Networks (MANET) are self-organized networks that are characterized by dynamic topologies in time and space. This creates an instable environment, where classical routing approaches cannot achieve high performance. Thus, adaptive routing is necessary to handle the challenges in MANETs. Furthermore, it is necessary for nodes to be self-aware i.e., able to discover neighbors, links and paths when … …American Journal of Applied Sciences, Vol. 12, Issue 12 · 7 Dec 2015 · 6,468 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDYNAMIC PLANNING BASED SCHEDULING APPROACH FOR WIRELESS SENSOR NETWORKSM. Senthil Kumaran, R. RangarajanEnergy efficiency is an important issue in wireless sensor networks. A sensor node has a microprocessor and a small amount of memory for signal processing and task scheduling. Dynamic Planning is a method is used in this approach it combines the flexibility of dynamic scheduling with the predictability offered by schedulabilty check. Whenever a node wants to transmit data packet … …Journal of Computer Science, Vol. 9, Issue 10 · 5 Sep 2013 · 6,823 accessesView PDFCite
Research ArticleOpen accessIn the keywordsComparison of Speech Features on the Speech Recognition TaskIosif Mporas, Todor Ganchev, Mihalis Siafarikas, Nikos FakotakisIn the present work we overview some recently proposed discrete Fourier transform (DFT)- and discrete wavelet packet transform (DWPT)-based speech parameterization methods and evaluate their performance on the speech recognition task. Specifically, in order to assess the practical value of these less studied speech parameterization methods, we evaluate them in a common experimental setup and compare their performance against traditional … …Journal of Computer Science, Vol. 3, Issue 8 · 31 Dec 2007 · 7,124 accessesView PDFCite
Research ArticleOpen accessIn the keywordsNEW BURST ASSEMBLY AND SCHEDULING TECHNIQUE FOR OPTICAL BURST SWITCHING NETWORKSV. Kavitha, V. PalanisamyThe Optical Burst Switching is a new switching technology that efficiently utilizes the bandwidth in the optical layer. The key areas to be concentrated in Optical Burst Switching (OBS) networks are the burst assembly and burst scheduling i.e., assignment of wavelengths to the incoming bursts. This study presents a New Burst Assembly and Scheduling (NBAS) technique in a simultaneous multipath … …Journal of Computer Science, Vol. 9, Issue 8 · 6 Jul 2013 · 6,946 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSecured Routing with Authentication in Mobile Ad Hoc NetworksT. Guru Baskar, D. ManimegalaiA Mobile Ad hoc Network (MANET) is a collection of wireless mobile nodes that dynamically forms a temporary network without any fixed infrastructure. Each node participates in the ad hoc routing protocol that helps it to discover multi-hop paths through the network to any node. Security challenges have become a primary concern for these networks due to their characteristics such … …Journal of Computer Science, Vol. 9, Issue 4 · 9 May 2013 · 6,070 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEnhancement of Quality of Service Parameters in Wimax Mobile NetworksChandra, HelenPrabhaNext generation mobile networks are expected to provide seamless personal mobile communication and QoS. Since the demands for high speed Internet access as well as multimedia service had increased for last mile broadband access, the Scheduling is one of the most important components of BWA systems that affect system QoS provided to users. Priority queuing gives better throughput than the … …American Journal of Applied Sciences, Vol. 9, Issue 12 · 7 Nov 2012 · 6,839 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffective Utilization of Multicore Processor for Unified Threat Management FunctionsSudhakar Gummadi, Radhakrishnan ShanmugasundaramProblem statement: Multicore and multithreaded CPUs have become the new approach for increase in the performance of the processor based systems. Numerous applications benefit from use of multiple cores. Unified threat management is one such application that has multiple functions to be implemented at high speeds. Increasing performance of the system by knowing the nature of the functionality and effective … …Journal of Computer Science, Vol. 8, Issue 1 · 29 Oct 2011 · 8,149 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCongestion Control in Wireless Ad Hoc Networks by Enhancement of Transmission Control ProtocolN. Premalatha, A. M. NatarajanProblem statement: Transmission Control Protocol is the Internet’s most widely used transport control protocol. TCP’s strength lies in the adaptive nature of its congestion avoidance and control algorithm and its retransmission mechanism. In TCP Vegas rerouting (a path), which change the propagation delay of the connection and this may be able to result in a substantial decrease in through put. … …Journal of Computer Science, Vol. 7, Issue 12 · 17 Oct 2011 · 6,690 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAdaptive Linear Prediction Augmented Autoregressive Integrated Moving Average Based Prediction for VBR Video TrafficT. Raghuveera, P. V.S. Kumar, K. S. EaswarakumarProblem statement: Network traffic prediction plays a vital role in the optimal resource allocation and management in computer networks. This study introduces an ARIMA based model augmented by Adaptive Linear Prediction (ALP) for the real time prediction of VBR video traffic. The synergy of the two can successfully address the challenges in traffic prediction such as accuracy in prediction, resource … …Journal of Computer Science, Vol. 7, Issue 6 · 14 Jun 2011 · 7,018 accessesView PDFCite