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The routing performance in Mobile Ad-hoc Networks (MANETs) relies on the co-operation of the individual nodes that constitute the network. The existence of misbehaving nodes may paralyze the routing operation in MANETs. To overcome this behavior, the trustworthiness of the network nodes should be considered in the route selection process combined with the hop count. The trustworthiness is achieved...
The following topics are dealt with: tree-building algorithms; HCM decision tree; grid authorization system; grid scheduling system; evolutionary algorithm; data allocation problem; read-one-write-all monitoring synchronization transaction system; large block FEC; RED queue; TFRC congestion control; TCP; mobile ad hoc networks; vehicular ad hoc networks; wireless sensor networks; failure route protocol;...
The topological properties of mobile P2P Ad Hoc networks are critical factors that dominate the performance of these networks. The node degree and diameter of these networks are most important parameters which measure the autonomy, efficiency, robustness and load balancing of these networks. In order to improve the four features for these networks, researchers have proposed many practical systems...
A Mobile Ad hoc Network (MANET) is a heterogeneous network; a collection of mobile wireless devices with different characteristics communicating in a random network topology. Much research over-simplifies by assuming that all nodes are homogeneous, i.e., possess identical transmission power, reception quality and signal to noise ratio, which is not realistic. Such conditions are ideal and not often...
The advanced situation awareness of the driver in the road environment is very important for vehicular safety applications, especially for mitigating the harmful effects of collisions. Nowadays, advanced driver assistance systems are based on on-board sensors. The evolution of wireless networks lead to the exploitation of cooperation among vehicles to enhance road safety. In this paper the benefits...
This paper proposes a routing protocol that jointly exploits location and motion information in a dynamically adjusted way, towards self-adaptability in different combinations of mobility and node density conditions. The protocol employs a metric of the rate at which a packet approaches its destination over a multihop path, as an effect of both the forwarding to the next hop node and the carry action...
A Mobile Ad Hoc Network (MANET) is a dynamic wireless network that can be formed without the need for any pre-existing infrastructure in which each node can act as a router. Because mobile nodes have limited battery power, it is therefore very important to use energy in a MANET efficiently. In this paper, we provide an energy Entropy Multipath Routing optimization algorithm in MANET based on GA (EMRGA)...
The process of analyzing available network forensics evidence to determine their meaning and significance can be very involved. It is often necessary to develop a timeline of significant events to obtain an overview of what occurred, to create relational diagrams showing which users are connected to which systems, or to correlate and analyze data to find noteworthy patterns of network traffic. However,...
In this paper, we discuss how link stability and number of mobile nodes impact on end-to-end delay in mobile ad hoc network (MANET). We find that their relationship shows differently when there is a path between any arbitrary source-destination node pair in the network or not. Meanwhile, two models are proposed respectively based on the Cox proportional hazards model to reveal the relationship. It...
To solve the collaboration issues between wireless Ad Hoc networks and Overlay Network, an Ad Hoc overlay network model was presented and a Key-based Indexing Mechanism (KIM) was proposed accordingly, based on the distributed algorithm of Overlay Network and mobile node local routing algorithm. The mechanism combines protocol of Overlay Network in Logical namespace with routing protocol of mobile...
The inherent freedom in self-organized mobile ad-hoc networks (MANETs) introduces challenges for trust management; particularly when nodes do not have any prior knowledge of each other. Furthermore in MANETs, the nodes themselves should be responsible for their own security. We propose a novel approach for trust management in MANETs that is based on the nodes' own responsibility of building their...
The dynamic nature of mobile ad-hoc networks (MANETs) can easily lead to data being inaccessible due to constant route changes and network partitions. One method often used for increasing reliability and availability of data is replication. However, replication comes with costs, those of transferring and storing data and keeping track of consistency between replicas. For that reason, we have identified...
Ad-hoc mobile networks consist of many mobile nodes which communicate by wireless connections without any fixed infrastructure. Our present article, we will compare two types of routing: the reactive algorithm (AODV) and the proactive algorithm (OLSR). Through our simulation carried out under NS2 (Network Simulator 2), we will show a classification of the various algorithms of routing studied according...
In this paper we present a full performance analysis of an energy conserving routing protocol in mobile ad hoc network, named EM-AODV (Energy Multi-path Ad-hoc On-demand Distance Vector routing). EM-AODV is a reactive routing protocol which combines two mechanisms used in the basic AODV protocol. AODV and most of the on demand ad hoc routing protocols use single route reply along reverse path. Rapid...
Mobile ad-hoc network (MANET) is a collection of intercommunicating mobile hosts forming a spontaneous network without use existing infrastructure. The mobility model represents the moving behavior of each mobile node in the MANET that should be realistic. It is a crucial part in the performance evaluation of MANET. In this paper, we have studied the effects of various random mobility models on the...
In recent years, MANETs are continuing to attract the attention for their potential use in several fields such as military activities, rescue operations and time-critical applications. In this paper, we present the implementation and analysis of our implemented MANET testbed considering AODV and OLSR protocols for wireless multi-hop networking. We investigate the effect of mobility and topology changing...
In VANETs and MANETs, the topology of the network changes very often, therefore implementation of efficient routing protocols is very important problem. In MANETs, the Random Waypoint (RW) model is used as a simulation model for generating node mobility pattern. On the other hand, in VANETs, the mobility patterns of nodes is restricted along the roads, and is affected by the movement of neighbour...
Routing is one of the most challenging open problems in Vehicular Ad hoc NETworks (VANETs) because of the short-lived wireless connectivity environment. Store-carry-and-forward approach using buses on regular routes is considered as one of the most promising emerging routing policy that can significantly improve delivery performance and reliability in VANETs. While none of existing solutions considers...
In this paper, we proposed a long-life, shortest path routing method for interval-vehicle communication. Firstly, we form the inter-vehicle network into the layered network to construct the shortest path. Next, we deduce the link with maximal lifetime between two directly linked vehicles according to their velocities and moving directions. Furthermore, the lifetime of one hop neighbors is propagated...
We consider the case of a Mobile Ad-Hoc Network (MANET), with nodes that have multiple packet reception (MPR) capability This is done by segmenting the incoming signal in a series of time-overlapping windows, each to be processed by an algorithm that separates each transmitter signal, as suggested in other works We will focus on the effect of varying the overlapping length. In this paper we addressed...
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