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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...
A MANET or Mobile Ad-Hoc Network is decentralized in nature and it is basically a collection of heterogeneous mobile nodes which are autonomous and can communicate among themselves over the wireless link. In this infrastructure-less network, all the nodes dynamically route the packets by themselves with help of some protocols for sending or receiving the packet information. The ZRP or Zone Routing...
The wide diffusion of mobile devices that natively support ad hoc communication technologies has led to a number of protocols for enabling and optimizing Mobile Ad Hoc Networks (MANETs). Nevertheless, the actual utilization of MANETs in real life is still limited, in part due to the lack of protocols for the automatic creation and evolution of ad hoc networks. Recently, a novel ad hoc protocol named...
In this paper the performance analysis of a routing algorithm for MANETs called Service Zone Gateway Prediction (SZGP) is presented. This is a non-cooperative and hybrid type of routing with a hierarchical multilayered structure, incorporating pre-computed multipath hop-by-hop distributed connectivity. The goal is balance of the load among the nodes and reliable and energy efficient communication...
Energy is a scarce resource in mobile ad hoc networks (MANETs). Network coding (NC) has been proposed recently as a means to reduce the number of transmissions and energy consumption. In this paper, we introduce energy consumption control into network coding to further enhance its performance. We propose a Sliding Window Network Coding for Energy Efficient in MANETs (SWNC-EE). The performance of the...
Indeed, MANET's are an emerging technology, evolved to provide users with facility to establish Ad-hoc networks for seamless communication. Routing is a major issue in MANET's. AODV is considered as one of most efficient routing protocol in MANET's but, its performance is adversely effected by various security attacks. A routing protocol can be attacked in many ways so as to disrupt the routing process...
Secure routing in the field of mobile ad hoc network (MANET) is one of the most flourishing areas of research. Devising a trustworthy security protocol for ad hoc routing is a challenging task due to the unique network characteristics such as lack of central authority, rapid node mobility, frequent topology changes, insecure operational environment, and confined availability of resources. Due to low...
To solve hidden-terminal and exposed-terminal problems, an improved multi-channel MAC protocol (IMCMP) is proposed based on the existing multi-channel MAC protocol (MCMP). With the network simulation tool NS-2 (Network Simulator 2), the simulated experiments on the 802.11 protocol, MCMP and IMCMP are carried out. The simulation results show that under the different network loads and different channel...
A Mobile Ad hoc Network (MANET) is a multihop wireless network in which the mobile nodes are dynamic in nature and has a limited bandwidth and minimum battery power. Due to this challenging environment the mobile nodes can be grouped into clusters to achieve better stability and scalability. Grouping the mobile nodes is called clustering, in which a leader node is elected to manage the entire network...
Detecting malicious and selfish nodes in mobile and wireless networks is a task that typically relies on watchdog techniques. However, such medium overhearing techniques are prone to cause a high energy consumption. In this paper we propose a distributed time division-based monitoring strategy to achieve the high security levels required while consuming less energy. Our proposal involves both trust...
Mobile AdHoc NETworks (MANETs) have been identified as a key emerging technology for scenarios in which IEEE 802.11 or cellular communications are either infeasible, inefficient, or cost-ineffective. Smartphones are the most adequate network nodes in many of these scenarios, but it is not straightforward to build a network with them. We extensively survey existing possibilities to build applications...
Because of the far reaching accessibility of cell phones, portable specially appointed systems (MANETs) have been generally utilized for different essential applications, for example, military emergency operations and crisis readiness and reaction operations. This is principally because of their framework less property. In a MANET, every hub functions as a host as well as go about as a switch. While...
Mobile Ad hoc Networks (MANETs) are self-configuring, de-centralized and a kind of multi hop wireless packet networks, where the mobile gadgets (also referred to as nodes) communicate with each other on wireless links. Such networks find applications where a quick deployment or dynamic reconfiguration of network is required, or there is no pre-existing network infrastructure or wired network is available...
Peer-to-Peer (P2P) overlays and Mobile Ad hoc Networks (MANETs) exhibit some common characteristics, such as dynamism, self-organization and decentralized control. The synergy between the two has been utilized by researchers to design distributed applications over MANETs. However, the available simulation platforms are far from perfect to evaluate the proposed designs. In most of the simulation platforms,...
The use of recommendation in trust-based models has its advantages in enhancing the correctness and quality of the rating provided by mobile and autonomous nodes in MANETs. However, building a trust model with a recommender system in dynamic and distributed networks is a challenging problem due to the risk of dishonest recommendations. Dealing with dishonest recommendations can result in the additional...
MANETs is collection of wireless network establishing a network in which nodes communicate with each other by network systems such as the Internet. MANETs routing protocols are characterized into two types, for example, table-driven and on-request or demand. In this network node performed as a function of routers which discovers and maintain the path to other node. In Adhoc network nodes are easily...
In this paper, we propose a multi-band multi-channel adaptation algorithm to enhance the performance of single-hop mobile ad hoc networks (MANETs) running the IEEE802.11 standard. The algorithm takes into consideration medium contention, coverage range and obstacle penetration in selecting both the operating band and the channel within the selected band. Applying the algorithm, a MANET with its usual...
Mobile ad hoc Network (MANET) consists of autonomous mobile nodes without any centralized control. These mobile nodes move arbitrarily within the self-configurable MANET environment. Each of these mobile nodes can act as router while receiving and forwarding information. Secure routing is an important issue in MANET as mobile nodes are prone to attacks from malicious nodes and the overall performance...
Many MANET routing protocols do not perform well in dense scenarios with high network load. In these situations, we can observe a high level of route instability, which is often called "route flapping". In this paper we present the PRIME routing protocol, which uses a probabilistic multipath forwarding process to increase route stability in dense scenarios with high network load. We describe...
SatSim was developed to provide a low cost, easy to learn, network simulator for simulating satellite networks. SatSim is unique in that it accurately accounts for orbital movement of satellites on a discrete per packet basis that heavily affects communication link quality. SatSim can be seen as a special case of a typical network simulator, developed for networks that require physical node movement...
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