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VANET's is an emerging field in communication networks and has become a promising tool to provide safety and connectivity for an intelligent transport system. Choosing appropriate routing protocols is necessary for smooth communication. In this paper we use NS-3 to implement AODV, OLSR and DSDV routing on V-to-V, I-to-I and V-to-I nodes. Then we employ Qos (Quality of service) parameters like throughput,...
On the basis of the research on the Ad hoc network routing protocol, this paper emphatically describes the LANMAR routing protocol. According to the realization of wireless Ad Hoc network routing protocol under the environment of OPNET 14.5 and the introduction of network simulation software OPNET and wireless protocol LANMAR-FSR principle, the paper explains in detail the process simulation modeling...
In recent years the rapid development in telecommunication technologies leads to a non linear growth in the number of users of mobile electronic gadgets accessible to a communication network. These electronic gadgets are nothing but the nodes of the MANET (Mobile Ad hoc Networks) and thus the mobility of the nodes effects a much the performance of the network. A change in mobility can be meant as...
In recent years, improving network model and enhancing the network performance have received people's attention gradually. The peer-to-peer network model has been used in Ad Hoc networks to increase the data output rate, to reduce the transmission power, to increase network capacity and the better load balance. However, the network analysis topology computation, the routing and the energy supply have...
We consider an epidemic routing based data dissemination model with mobile peers performing close-range wireless communications each other. We focus on data gathering times of peers randomly wandering on graphs and investigated their probability distributions. We deal with the model mainly on finite and partially deformed two-dimensional square lattices by removing or adding edges. In finite graphs,...
Multiparty routing protocols for resource constraint VHF Mobile Tactical Networks are studied by employing a modeling platform that integrates VHF tactical radio signal measurement data and practical network deployment scenarios. The standard approach of Simplified Multicast Forwarding based on the 2-hop neighborhood information and a typical alternative using 1-hop network clustering are compared...
Wireless Mesh Networks (WMN) provide a flexible and inexpensive way to expand network applications to mobile entities. However, high communication reliability demands can not be met by regular WMNs due to mobility and inherent properties of wireless communication. Failing links are common events which impose a major challenge for providing a dependable communication service. By the use of suitable...
Mobile ad hoc network (MANET ) is a dynamically reconfigurable mobile wireless network that does not have a fixed infrastructure. The network topology of MANETs changes very fast, making it more difficult to find the routes and provide security for the messages packets used. Since MANETs are useful in disaster operations, military operation, the need for the group communication is vital. Most of the...
Ad hoc networks are formed with the help of their constituent wireless mobile nodes which are expected to forward packets for other nodes in a cooperative manner. Ad hoc On-demand Distance Vector routing; AODV is one of such protocols that helps to create and maintain routes in spite of the dynamic network topology. This protocol is vulnerable to a number of security threats that come from internal...
Mobile Ad hoc Networks (MANETs) is a collection of self organized mobile nodes that can communicate with each other without the need of pre-deployed infrastructure. Each mobile node acts as a router and forward packets for the other nodes in order to achieve the multi-hop communication between the nodes. A mobile node misbehave (selfish) due to its scarcely available resources and decide not to forward...
In this paper we study the information spreading behavior of selected, mobility models combined with epidemic algorithms and the dynamic routing efficiency of gossip based routing algorithms on ad-hoc networks. Epidemic algorithms follow a paradigm of nature where simple rules dictate the spread of information by having a local view of the environment. In our work, three models of mobility, Random...
An ad hoc network is a collection of autonomous mobile nodes to forming an instant multihop radio infrastructure-less network in a dynamic topology. Each node in Ad hoc network, functions as host and router at the same time,where maintaining connectivity in a decentralized manner by distributing the network control among the nodes. A large number of routing protocols for mobile ad-hoc networks are...
Delay tolerant networks (DTNs) are wireless mobile networks that do not guarantee the existence of a path between a source and a destination at any time. When two nodes move within each other's transmission range during a period of time, they can contact each other. The contact of nodes can be periodical, predictable and nonpredictable. In this paper, we assume the contact of nodes is nonpredictable...
In wireless communication, ad hoc mobile network is a collection of mobile nodes that are dynamically and arbitrarily located in such a manner that the interconnections between nodes are capable of changing on a continual basis. In order to facilitate communication within the network, a routing protocol is used to discover routes between nodes. Routing is a fundamental issue for mobile ad hoc network...
Expected growth in use and implementation of wireless sensor networks (WSNs) in different environments and for different applications creates new security challenges. In WSNs, a malicious node may initiate incorrect path information, change the contents of data packets, and even hijack one or more genuine network nodes. As the network reliability completely depends on individual nodespsila presence...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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