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19 articles for “opportunistic network”
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Opportunistic Network Environment: A Multipurpose Simulation Tool for Wireless Networks
Abstract: In this paper, ONE simulator and its working is discussed with some practical examples. How to practically use ONE simulator is described in easy and proper manner. ONE is a wireless simulator used to simulate different wireless networks. In this simulator, different routing protocols, different attacks occurred in routing protocols can be implemented. Energy analysis congestion control can also be implemented in this simulator. This simulator is open, accessible, easy-to-use …
Published in Journal of Open Source Developments · Vol. 2, Issue 2, 2015 · pp. 30–34 Read article
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An Encounter Based Routing Mechanism to Improve Delivery Ratio and Reduced Overhead Ratio in Opportunistic Networks
Abstract: OPPNETs (Opportunistic Networks) are wireless networks that have sporadic network connectivity, thus rendering the existence of instantaneous end-to-end paths from a source to a destination difficult or impossible. Hence, in such networks, message delivery relies heavily on the store-and-forward paradigm to route messages. However, limited knowledge of the contact times between the nodes poses a big challenge to effective forwarding of messages. In this paper, EBR (encounter based routing) is …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 3, Issue 3, 2016 · pp. 27–32 Read article
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Selfish node detection in Opportunistic Networks
Abstract: In recent years, Opportunistic Networks (OPPNET) are grown at very fast rate. These networks are designed for the areas in which no end-to-end connectivity is available for communication. OPPNET works on the principle of store carry and forward mechanism. Transmission of messages takes place through intermediate nodes in OPPNET. It means that OPPNET depends on intermediate nodes. If any intermediate nod behaves maliciously then data transmission may cause. This paper …
Published in Journal Of Network security · Vol. 4, Issue 3, 2016 · pp. 7–10 Read article
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A Review on Routing in Delay Tolerant Network
Abstract: DTN (Delay-Tolerant Networking) is a technique in PC system development that looks into the location, specialized matters in heterogeneous systems that may need consistent system integration. Delay-tolerant networking is possible only on the systems with colossal amounts of nearby stockpiling and internodes data transmission with respect to the expected activity. Use of DTN incorporates vehicular systems and sensor organizes in rural and rustic territories. This paper incorporates the diverse conventions, …
Published in Journal of Advances in Shell Programming · Vol. 2, Issue 3, 2015 · pp. 16–22 Read article
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Assessment on Different Routing Strategies in Delay Tolerance Networks
Abstract: ONs(Opportunistic Networks) are designed for disaster areas where sender and receiver are not formed direct in range to transfer messages. For this, ON provides intermediate nodes connectivity that uses store-carry and forward mechanism to transfer messages between nodes. ON provides number of routing techniques which help nodes to send messages between them efficiently. These routing techniques are Epidemic, Spray and Wait, Prophet and many more. In this paper analysis, different …
Published in Journal of Web Engineering & Technology · Vol. 5, Issue 2, 2018 · pp. 1–4 Read article
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Simulation of Different Routing Protocols using ONE Simulator in Delay Tolerant Network
Abstract: DTN (Delay Tolerance Network) is a network which is specially designed to handle long partitions and frequent delays occurring in previous wireless network. In DTN data is transmitted in store carry and forward manner. In this paper an attempt has been made to simulate different existing DTN routing protocols. For simulation ONE (Opportunistic Network Environment) simulator is used. ONE is free and easy to use simulator. Simulation is performed on …
Published in Journal Of Network security · Vol. 3, Issue 2, 2015 · pp. 20–26 Read article
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A Grade Based Scheme to Detect Malicious Nodes in Delay Tolerant Networks
Abstract: DTN is a network in which no direct contacts are present between network nodes. For data packet transmission in network, concept of intermediate nodes is used. Data transmission through intermediate nodes is not secure because unfortunately some intermediate nodes behave as malicious nodes. So security in DTN is a challenging task. Different types of malicious nodes perform different kind of attacks during data transmission. In this paper, present a grade …
Published in Journal Of Network security · Vol. 3, Issue 3, 2015 · pp. 17–21 Read article
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A Threshold Based Scheme to Detect Black Hole Attack in DTN
Abstract: Security in DTN is a challenging task. Numbers of misbehaving attacks are present in the network. In this paper we focus on Black Hole attack with the problem of misbehaving and propose a solution based on the concept of threshold and validation. Each node maintains a local value called status of node. A node “status” is the delivery probability of nodes so doing, a misbehaving node is not chosen even …
Published in Journal Of Network security · Vol. 3, Issue 2, 2015 · pp. 12–19 Read article
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A Reputation based Scheme to Detect a Black Hole Attack in MANET
Abstract: MANET is wireless network in which an end to end path is present between Network Security to MANET is wide problem. A black hole attack is an attack which drops the packets or provides wrong routing information to disturb routing process. In this paper we propose a new reputation based scheme to detect a black hole attack in MANET. In this scheme with the help of reputation of node we …
Published in Journal Of Network security · Vol. 3, Issue 2, 2015 · pp. 27–31 Read article
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Contact-Based Routing to Improve Delivery Ratio in DTN
Abstract: Delay tolerant networks (DTNs) are a new development in network research field. DTNs are the networks where no end-to-end paths are present between nodes for a long period of time. DTNs are wireless networks where disconnections and delays are high. DTN works on the principle of store, carry, forward mechanism. A store, carry, forward mechanism is a mechanism in which when a node receives a packet then it stores in …
Published in Journal Of Network security · Vol. 3, Issue 2, 2015 · pp. 36–43 Read article
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OQPMSAV: Opportunistic Quality of Services Provisioning for Multimedia Services using Artificial Neural Network
Abstract: Vehicular ad hoc network is used to provide services related to traffic safety and user requirements. In VANET, applications are designed for users from various domains automobile company, road safety authority, advertisement industries, personal entertainment. Applications developer requires efficient utilization of available networking resources. VANET is witnessed of continuous support form researchers, developer, government authorities and vehicles manufactures. In VANET, vehicles are designed to move at high speed which causes …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 1, 2018 · pp. 29–42 Read article
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Cooperation Based Mechanism to Contrast Black Hole Attack in DTN
Abstract: AbstractDelay tolerant network (DTN) has intermittent node connectivity and nodes are highly mobile. Most often DTN behaves abnormally due to the presence of various malicious nodes and because of challenging environment they try to gain the benefit of presenting itself as a normal node. In this thesis, we focused on black hole attack. A black hole node silently removes or drops the packets without acknowledging the source and destination. When …
Published in Journal of Web Engineering & Technology · Vol. 3, Issue 3, 2016 · pp. 17–20 Read article
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Application of Game Theory Principles for Opportunistic Routing in MANETS
Abstract: This article explores the application of game theory principles to enhance opportunistic routing in mobile ad hoc networks (MANETs). MANETs are characterized by their dynamic topology, limited resources, and lack of infrastructure, making traditional routing protocols less efficient. Opportunistic routing leverages the mobility of nodes and the broadcast nature of wireless communication to achieve reliable message delivery. However, existing opportunistic routing algorithms may suffer from challenges such as high message …
Published in International Journal of Mobile Computing Technology · Vol. 2, Issue 1, 2024 · pp. 1–8 Read article
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Analysis and Application of Cognitive Radio on 4G Communications
Abstract: AbstractNowadays network services are available anywhere and anytime through the advancement in wireless communication technology. Several technology and generation are introduced for wireless communication such as 2.5G, 3G etc. But for faster and reliable communication wireless generations are improved—4G technology is one of them. 4G communication systems are being developed to solve the various problems faced by the current communication systems (3G, 2.5G). 4G will be an intelligent technology that …
Published in Journal of Communication Engineering & Systems · Vol. 4, Issue 3, 2014 · pp. 1–8 Read article
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Study of Cooperative Spectrum Sensing Techniques in Cognitive Radio Networks
Abstract: Cognitive radio is key enabling technology that enables next generation communication networks, also known as dynamic spectrum access network, to utilize the spectrum more efficiently in an opportunistic fashion without interfering with the licensed user. Its roots came from the discovery by regulatory bodies in various countries, which found that most of the radio frequency spectrum was inefficiently utilized. This was the reason for allowing unlicensed users to utilize licensed …
Published in Current Trends in Signal Processing · Vol. 7, Issue 1, 2017 · pp. 35–41 Read article
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Fuzzy Based Opportunistic Power Control Strategy for Cognitive Radio with Compressive Sensing
Abstract: Cognitive radio is an intelligent communication technology that allows secondary users to utilize licensed band opportunistically and helps in resolving the issue of spectrum scarcity. In spectrum sharing network, where the secondary user can communicate simultaneously along with primary user in the same frequency band, the main challenge to opportunistic radio spectrum access lies in finding balance between two conflicting goalsof satisfying performance requirements while minimizing interference. In this paper,the …
Published in Recent Trends in Sensor Research & Technology · Vol. 2, Issue 3, 2015 · pp. 14–22 Read article
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Flooding Techniques in Wireless Sensor Networks: A Review
Abstract: Intended for network-wide dissemination of commands, configurations and code binaries, flooding has been investigated extensively in wireless networks. However, little work has yet been done on low-duty-cycle wireless sensor networks in which nodes stay asleep most of time and wake up asynchronously. In this type of network, a broadcasting packet is rarely received by multiple nodes simultaneously, a unique constraining feature that makes existing solutions unsuitable. Combined with unreliable links, …
Published in Journal Of Network security · Vol. 3, Issue 2, 2015 · pp. 8–11 Read article
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On the Trade-Off between Information Rate and Power Transfer for Multiuser Scheduling Schemes under Rayleigh Fading
Abstract: With the evolution of wireless communication technologies, the need for green communication and energy saving becomes more critical than ever. The lifetime of a battery-powered network usually depends on the battery capacity. RF energy harvesting is a promising technique to prolong the battery lifetime effectively. The performance of multiuser scheduling schemes for a time-slotted system with simultaneous wireless information and power transfer under Rayleigh fading channel is studied in this …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 3, Issue 2, 2016 · pp. 13–20 Read article
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Xenopsylla cheopis and Plague: Biology, Transmission, and Control
Abstract: Xenopsylla cheopis, the oriental rat flea, remains the most important vector of Yersinia pestis in classical rodent–flea–human plague cycles. Its biology is tightly adapted to commensal rats, especially Rattus rattus and Rattus norvegicus, whose nests provide microhabitats that support all pre adult stages and favour persistent flea populations near humans. The flea’s holometabolous life cycle, including the capacity for prolonged pupal quiescence and opportunistic host-seeking by adults, underpins its ability …
Published in International Journal of Insects · Vol. 3, Issue 2, 2026 Read article