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507 articles for “Protocol”

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Research ArticleOpen accessEvery word in the titleAd Hoc Mobile Wireless Networks Routing Protocols - A ReviewGeetha Jayakumar, G. GopinathMobile ad hoc networks(MANET) represent complex distributed systems that comprise wireless mobile nodes that can freely and dynamically self organize into arbitrary and temporary ad-hoc network topologies, allowing people and devices to seamlessly internet work in areas with no preexisting communication infrastructure e.g., disaster recovery environments. An ad-hoc network is not a new one, having been around in various forms … …Journal of Computer Science, Vol. 3, Issue 8 · 31 Aug 2007 · 115,241 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnonymous and Non-Repudiation E-Payment ProtocolSattar J Aboud, Mohammed Ahmed AL-FayoumiThere are many proposals offer anonymous and non-repudiation e-payment protocols. But they have the drawbacks that the anonymity can be misused by fraudulent to perform a perfect crimes. Currently, the hot research concentrates on the accepting of e-payment protocols where the anonymity of the coins is cancelable via a trusted authority in the case of criminal entities. In the article … …American Journal of Applied Sciences, Vol. 4, Issue 8 · 31 Aug 2007 · 7,274 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Secure Time-Stamp Based Concurrency Control Protocol For Distributed DatabasesShashi Bhushan, R. B. Patel, Mayank DaveIn distributed database systems the global database is partitioned into a collection of local databases stored at different sites. In this era of growing technology and fast communication media, security has an important role to play. In this paper we presented a secure concurrency control protocol (SCCP) based on the timestamp ordering, which provides concurrency control and maintains security. We … …Journal of Computer Science, Vol. 3, Issue 7 · 31 Jul 2007 · 6,885 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFormal Validation of the Safety Property of Sack Protocol Using Theorem Proving TechniqueZ. Shukur, N. Alias, M. H. Mohamed Halip, B. IdrusThis paper demonstrates the formal validation process of safety properties of Selective ACKnowledgment (SACK) protocol. SACK is a complex communication protocol as it is used in various types of distributed computer systems and networks. This acknowledgment mechanism is used with sliding window protocol that allows the receiver to acknowledge packets received out of order, but within the correct sliding window. … …Journal of Computer Science, Vol. 3, Issue 6 · 30 Jun 2007 · 6,227 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Analysis and Overview of Wireless Routing ProtocolsN. Dhanalakshmi, P. AlliProblem statement: In the past, the main focus of the research in the wireless network is to provide optimal routes between source and destination nodes. The wireless routing is required additional computational effort than wired routing in order to fulfill the major wireless characteristics such as battery power constraints, frequent mobility and less processing. Approach: In addition to wired routing … …Journal of Computer Science, Vol. 8, Issue 3 · 17 Jan 2012 · 7,628 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparative Performance Evaluation of Routing Algorithms in IEEE 802.15.4 and IEEE 802.11 with Different Ad Hoc Routing ProtocolP. Anitha, C. ChandrasekarProblem statement: Wireless ADHOC networks are self organized dynamic networks can share wireless channel without any established central control standard for IEEE 802.11. Approach: The most common protocols are AODV, DSDV, DSR in ADHOC used to ensure the data transmission among themselves. To meet the need of low power and low cost IEEE 802.15.4 standard was developed for sensor networks. … …Journal of Computer Science, Vol. 7, Issue 5 · 7 May 2011 · 7,409 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMobile Ad Hoc Network Security for Reactive Routing Protocol with Node Reputation SchemeA. Suresh, Dr. K. DuraiswamyThe mobile node’s reputation in the Mobile Ad hoc Network (MANET) identifies its trust worthiness for secured multiple data communication. Unknown nature of the node’s communication status for initial period has great impact in the effective data transfer as MANET is self-organized and distributed. Problem statement: The functional operation of the mobile network relies on the trusty cooperation between the … …Journal of Computer Science, Vol. 7, Issue 2 · 25 Feb 2011 · 6,988 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePerformance Comparison of Two On-demand Routing Protocols for Ad-hoc Networks based on Random Way Point Mobility ModelGeetha Jayakumar, G. GopinathAd hoc networks are characterized by multihop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols plays an important role. We compare the performance of two prominent on-demand routing protocols for mobile ad hoc networks: Dynamic Source Routing (DSR), Ad Hoc On-demand distance Vector Routing (AODV). A detailed simulation model with MAC and physical layer … …American Journal of Applied Sciences, Vol. 5, Issue 6 · 30 Jun 2008 · 7,692 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVANET Routing Protocols and Architectures: An OverviewAnas Abu TalebVAVETs have become an interesting area of research since vehicles can be equipped with sensors, processing and communication devices. As a result, various life changing application emerged in different areas such as safety and public services. VANETs are considered as a subclass of Ad hoc networks. However, they have special characteristics that differentiates them such as QoS requirements, privacy, safety … …Journal of Computer Science, Vol. 14, Issue 3 · 30 Mar 2018 · 8,161 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTHE SCADA REVIEW: SYSTEM COMPONENTS, ARCHITECTURE, PROTOCOLS AND FUTURE SECURITY TRENDSA. Shahzad, S. Musa, A. Aborujilah, M. IrfanThe Supervisory Control and Data Acquisition (SCADA) system has prominent place and play important roles within real time industrial communication included &#34electric stations, oil stations and water purification plants&#34. In this study; the SCADA System main components, architecture and important protocols, which have been used in SCADA message transmission are reviewed. After review, the current research changes the direction (Section: … …American Journal of Applied Sciences, Vol. 11, Issue 8 · 27 Jun 2014 · 9,081 accessesView PDFCite