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This article presents simulation results for a mobile ad-hoc network running Dynamic Source Routing reactive protocol under the conditions of limited availability and heightened response times of network nodes. Authors conclude that dynamic source routing stops being efficient in large networks and propose a hybrid routing protocol that includes the proactive phase and uses availability criterion...
Wireless Mesh Network (WMN) is an upcoming technology that supplements wired infrastructure with wireless backbone to provide Internet connectivity to mobile nodes (MN) or users in residential areas and offices. Here the each wireless backbone node operates both as a wireless router that forwards packets of other nodes & as a wireless bridge transmitting the packets of its clients WMN has the...
In this work we investigate the performance of Ad-hoc on-demand distance vector routing (AODV), Dynamic source routing (DSR), Temporary ordered routing (TORA), Optimized link state routing (OLSR) and Geographic routing (GRP) protocols in wireless ad-hoc networks by using OPNET simulation program. In ad-hoc networks consisting of fixed and mobile stations, routing protocols are compared for different...
Packet data networks at sea offer the potential for increased safety, connectivity and meteorological data acquisition. Existing solutions including satellite communication are expensive and prohibitive to most small vessels. In this paper, an Internet of Things (IoT) application is proposed as a marine data acquisition and cartography system over Ship Ad-hoc Networks (SANET). Ships are proposed to...
Networking system does not liable on static infrastructure that interconnects various nodes in identical broadcast range dynamically called as Mobile Ad-hoc Network. A Network requires adaptive connectivity due to this data transmission rate increased. In this paper, we designed developed a dynamic cluster head selection to detect gray hole attack in MANETs on the origin of battery power. MANETs has...
An adhoc network is collection of wireless mobile hosts, which form a temporary network by using reconfigurable structure that means it doesn't use fixed infrastructure to form a temporary network. It will connect all nodes through wireless technique. Hence it can change the link between one node to another node during run time, when the link failure problem occurs. There is a limited range for each...
A number of opportunistic content sharing services were developed that exploit device-to-device contacts for infrastructure-less operation. All of them depend, like geo-based ad-hoc routing protocols, on mobile devices knowing their respective positions to accurately perform data replication. In this paper, we explore the impact of different types of location errors on the performance of such a service...
Mobile Wireless sensor network consist of number of sensor nodes and each node works on limited battery life. Several factors like routing protocol, nodes mobility and energy can affect the performance of a WSN. This paper presents fuzzy rule based simulation system for WSN to predict the node's mobility and energy. Mobility prediction provides stable path for network and energy prediction increases...
Wireless Sensor technology is one among the fast emerging technologies in the current scenario and it has wide range of application also which has small sensors with minimum communicational and computational power. Depending on the overhead of a node, the energy consumption varies with each other. This leads to the non-uniform distribution of the energy which in turn degrades the performance of the...
In mobile ad-hoc networks (MANETs), nodes use hello messages to detect neighbor nodes and to maintain link connectivity. In a typical MANET routing, a node broadcasts hello messages at a fixed interval. However, a fixed hello interval causes a long delay of neighbor discovery (too long hello intervals) or a more bandwidth waste by unnecessary protocol overhead (too short hello intervals). In this...
In the aftermath of a natural or industrial disaster, locating individuals is crucial. However, disasters can cause extensive damage to the network infrastructures and a generalized loss of communication among survivors. In this article, we present a network support solution that provides a post-disaster geolocation-collecting service that relies on inter mobile device connections. On top of this...
Current mobile ad-hoc routing protocols are not suitable for flying ad-hoc network, because of the dynamic environmental conditions, high mobility and terrain structures. In this paper, we propose a novel directional routing scheme for flying ad-hoc network using combined omnidirectional and directional transmissions. The proposed scheme features hybrid use of unicasting and geocasting routing using...
Ad-hoc mobile networks are free of any specific infrastructure in which, their nodes act in a moving and totally autonomous form and communicate with each other through radio waves. Communication among nodes is subject to change at any moment due to the emergence of new nodes in the network. Therefore, the security of these networks is of great importance. In this paper, we study different types of...
Mobile Ad-Hoc Networks (MANETs) are collections of self-organizing mobile nodes with dynamic topologies and does not have any centralized control in the network. MANET have no clear way of defense mechanism to protect network from security threats, thereby making this network accessible to both legitimate node and authorized node. The absence of centralized administration and openness make MANETs...
On-demand routing protocols for Mobile Ad Hoc Networks (MANETs) have been extensively studied. Generally, on-demand routing protocols establish routes by flooding route requests throughout the entire network, which is not a scalable approach. On the other hand, geographic routing protocols do not establish route a priory but route data packets in a greedy fashion towards the destination. When a packet...
An ad-hoc mobile network is a rambling collection of mobile nodes that are constantly changed and randomly located in such a manner that the nodes are capable of changing their interconnections between them on a continuity basis. In order to process easy communication with in the network, a routing protocol which is unicast or multicast used to discover routes between nodes. The main aim of such an...
On-demand routing protocols are the most commonly used protocols for the MANETs. It is the dynamic protocol and suitable for many applications. Wireless mobile adhoc networks have gained a lot of significance in wireless communications. The data transmission between the nodes in the wireless communication was established by adopting the routing protocol. The node in mobile ad-hoc networks acts as...
Wireless Communication is a very large technology in present world. Some of the wireless communications are Telephone, Mobile phone, GPS, Satellite etc. Mobile Ad-hoc Network is one of the wireless communication. The mobile node are moving in this network. So performance measure of the MANET is an important aspects towards understanding the complexity of the network. In this paper, I have compared...
In security context, mobile ad-hoc network is more vulnerable compare to conventional networks because of open environment and lack of physical tight proximity. Therefore attackers get opportunity to commit crime using these vulnerable points. Several types of attacks committed by attackers to impact network functioning and performance. Attacks committed by intruders that are part of network and compromised...
A Mobile Ad-hoc networks (MANETs) is composed of Mobile Nodes without any fixed infrastructure. Multicast routing in mobile Ad-hoc networks (MANETs) have many defiance due to implicit characteristics of the network such as node mobility, reliability, finite network resources etc. So, in this paper we have introduced a new scheme to improve the performance and efficiency of multicast routing protocols...
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