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A Mobile Ad hoc NETwork (MANET) is much more vulnerable to attack than a wired network due to the dynamic changes of the network topology, high mobility, limited physical security and lack of centralized administration. Unfortunately, the routing protocols are designed based on the assumption that all nodes trust each other and cooperate without maliciously disrupting the operation of routing. This...
Computation and routing in Mobile Ad hoc Network (MANET) is strongly co-related with power resource. Recent trend is to minimize the power consumption and maximize the computation without hampering the quality of service in MANET. To increase durability, battery resource of a node that has more power than its neighbor nodes could be used for routing and computation. In this paper a power aware routing...
Mobile ad hoc network (MANET) is a self-configuring network that is formed automatically via wireless links by a collection of mobile nodes without the help of a fixed infrastructure or centralized management. Due to dynamic infrastructure-less nature and lack of centralized monitoring points, the ad hoc networks are vulnerable to Black hole Attack. The network performance and reliability is broken...
The Routing Protocol available in present generation of MANET focuses mainly on the performance and only a little capability against the malicious attacks. The foremost concerned security issue in MANET is to protect the network layer from malicious attacks, thereby identifying and preventing malicious nodes. The selection of optimal path for routing and the detection of security attacks cannot be...
Movement of nodes in MANET makes the role of routing protocols tremendously important. Ad-hoc On Demand Distance Vector algorithm is a quick and efficient routing protocol for reduced broadcast. The dynamic and mobile nature of these networks faces frequent link failures resulting into broken routes. If the originating node is irresponsible to reinitiate route discovery, routing overhead may significantly...
Collection of wireless nodes like mobile, laptops, palmtops etc. can creates a dynamic wireless network without using any existing infrastructure known as Mobile Ad-Hoc Network (MANET). MANET performs peer to peer interactions among the wireless nodes participating in the network. Each node in the network must be able to function as a router as well to relay the packets generated by other nodes. Due...
A Mobile Ad-hoc Network (MANET) is actually a set of nodes which are self-configured and organized dynamically. Furthermore, nodes can communicate with each other without any fixed infrastructure as the base stations. The Ad-hoc On demand Distance Vector (AODV) is the most typical reactive routing protocol in MANET. It has been extensively studied through not only computer simulations but also implementations...
Mobile ad hoc network is wireless network of mobile nodes, with no centralized management and control. We proposed a protocol with an enhanced route discovery mechanism that avoids the congestion in the route. Our proposed protocol selects route on the basis of traffic load on the node and resets path as the topology changes. Instead of transmitting entire data through one route, new efficient paths...
Mobile Ad hoc network is a self-organizing, multi-hop and wireless network. This kind of networking is convenient to construct because it is free of time and space and it can be constructed without infrastructure. It has been widely used on many occasions such as danger zones, military regions, hospital and family. Due to the dynamic changes of topology, Ad hoc network has its particularity of routing...
We investigate the channel formation in a Mobile Ad Hoc Network (MANET) using the NS-2 simulator. The results show that the normalized node density is a good measure for predicting the performance of a MANET: for the normalized node density of 2.8 two nodes in a MANET running the AODV routing protocol stay connected 90% of the time. For the DSR protocol this is only 70%. The results may be used in...
Capacity of Mobile Ad Hoc Networks using a single channel and a single interface reduces due to channel interference and collision. Use of multiple non overlapping channels increases the network capacity by allowing more concurrent transmissions. A single interface together with multiple channels results in high switching delay. As a result multiple interfaces should be used to reduce the switching...
Mobile Ad Hoc Network (MANET) is a type of network with special characteristics and it needs special mechanism to bear with its ad hoc behavior. The important issue in MANET is routing protocol. Routing protocol is a standard used to determine the route path taken during the transmission of data. In this paper we will focus on Ad Hoc On Demand Distance Vector (AODV) routing protocol. The simulation...
Energy conservation is a very important design issue and has been attracting a lot of attention in recent years. The typical Mobile Ad Hoc Networks (MANET) routing protocols of the Internet Engineering Task Force (IETF) are mainly the shortest path routing protocols and do not consider the energy aware issue. This paper describes improvement of the conventional routing protocol by utilizing higher...
Mobile Ad-hoc Network (MANET) is a collection of wireless mobile nodes which dynamically forms a temporary network without the use of any existing network infrastructure or centralized administration. Recently, there has been a tremendous growth in the sales of laptops, handheld computers, PDA and portable computers. These smaller computers nevertheless can be equipped with megabytes/gigabytes of...
Mobile ad hoc networks are special kind of wireless networks, there is no fixed structure in these networks but they have nodes movement ability that add their complexity. These networks are established without defined structure and mostly used in military services, rescue operation in damaged areas, conferences and etc. According to these networks characteristics, different routing protocols have...
Congestion is a major problem in mobile ad hoc network (MANET) which causes long delay and significant loss of data packets, and increases the routing overhead and battery power consumption. The shortest path route seldom offers the optimal route, especially when it traverses the congested area of the mobile network. This paper proposes a novel AODV with Sufficient Intermediary Bandwidth Aware (AODV+SIBA)...
Mobile Ad-hoc Network is an infrastructure less and decentralized network which need a robust dynamic routing protocol. Many routing protocols have been proposed to accommodate the needs of communications for MANET. In this paper, we have compared the performance of traditional proactive DSDV routing protocol along with on-demand reactive routing protocols for MANET: AODV. From analysis, the On-demand...
Ad hoc on-demand distance vector (AODV) routing protocol has been investigated for mobile ad hoc networks and more commonly used. However, if there are unidirectional links in the networks, significantly long latency may be required for a route establishment when AODV routing protocol is used. We assume that unidirectional links can be occurred due to a difference of transmission power between the...
Mobile ad hoc network (MANET) consists of a collection of wireless mobile hosts without the required intervention of any existing infrastructure or centralized access point such as base station. The dynamic topology of MANET allows nodes to join and leave the network at any point of time. Wireless MANET is particularly vulnerable due to its fundamental characteristics such as open medium, dynamic...
The concept of byzantine attack comes from byzantine generals problem. In this abstract concept, the loyal byzantine army general are suppose to coordinate in a battlefield to conclude a common plan in the presence of traitor generals which can disrupt such coordination. This generals problem resembles the attacks initiated by authenticated nodes/devices in ad hoc network to disrupt the network. Although...
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