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Routing is one of the most significant challenges regarding mobile ad hoc networks (MANETs). Having no fixed infrastructure as well as frequent changes of network topology, as a result of nodes mobility, necessitates cooperation of all nodes in routing of packets. Lack of cooperation in routing can result in performance reduction and even network denial of service. Uncooperative behavior can be performed...
This paper presents a new routing protocol for ad hoc network called Ant-Based Energy-Aware Routing Protocol (ABEAR), which is based on the Ant Colony Optimization (ACO). ABEAR combines a reactive route setup procedure with proactive neighbor maintenance, and also makes use of route maintenance process. In routing computation for data packets, ABEAR considers the global and local information of every...
Energy efficient topology in Ad-hoc networks can be achieved mainly in two different ways. In the first method, network maintains a small number of nodes to form a connected backbone and the remaining nodes sleep to conserve energy. This method is effective for low traffic networks. Energy efficiency in the second method is achieved by power control technique. This technique is effective in high traffic...
Routing is one of the most important challenges regarding mobile ad hoc networks (MANETs). Having no fixed infrastructure along with frequent network topology changes, as a result of nodes mobility, necessitate routing protocols to operate under cooperation of all network nodes. Lack of cooperation in routing can lead to performance reduction and even network denial of service. Uncooperative behavior...
Scheduling algorithms are essential in guaranteeing Quality of Service (QoS) provisioning. Through QoS guarantee, a network application could obtain services which fulfil its specific requirements such as less delay, reduction in loss rate and higher throughput. However, due to dynamic nature of mobile ad-hoc networks (MANETs) which results to frequently changing topology and link breaks, the design...
MAODV (Multicast Ad-hoc On-demand Distance Vector), a well-known multicast routing protocol in MANETs, has been proposed over ten years. It is originally designed for single-source multicast operation and thus inefficient when applied to multisource scenario. In addition, MAODV requires a route rediscovery procedure to recover multicast routing tree from partition of the tree and takes a long time...
The area of mobile ad hoc networking has gained widespread interest of the network research community in recent years because of the ability of the MANETs to provide truly distributed and decentralized communication facility on ad hoc basis. But due to the bandwidth constrained links and limited transmission range of the mobile nodes, MANETs suffer from the inability to cover a wider network area...
In this paper we address the problem of efficiently routing queries among peers in a mobile ad-hoc network. Peers possess a local database and can pose queries to other peers, forming a distributed peer database application. In contrast to traditional networking, routing a query involves its delivery to as many as possible peers that are relevant to the query while at the same time minimizing the...
The design of a routing protocol for the provision of quality of service (QoS) in a mobile ad hoc network is a challenging task. In this paper, we propose a routing protocol that tries to satisfy QoS requirements in terms of bandwidth and end-to-end delays of a flow of packets in a time division multiple access (TDMA) based ad hoc network. Our protocol tries to identify a path that avoids hidden terminal...
Mobile Ad-hoc Networks (MANETs) consist of mobile devices that form the wireless networks without any fixed infrastructure or centralized administration. Due to the rising popularity of multimedia applications and potential commercial usages of the mentioned networks, Quality of Service (QoS) in MANET has become necessary to meet their QoS requirements. In this paper, first study the QoS requirements...
Routing protocols for mobile ad hoc networks have been researched for several decades. However, it's not an easy task to implement or apply effective routing algorithm for them due to their characteristics, namely highly dynamic topology and limited resources. Traditional ad hoc routing protocols find the best path in terms of delay or hop count which can lead to network congestion in high traffic...
The challenges of mobile ad hoc network are to maintain quality of services and performance. Many routing protocols like AODV discover routes whenever required by the source node and the benefit in doing so is that no prior knowledge of the topology is required. The AODV routing protocol is commonly and effectively used for mobile, ad-hoc nodes. So far, many maintenance strategies have been proposed...
Collusion Attack is an attack against Mobile Ad Hoc Networks and is based on Optimised Link State Routing (OLSR) Protocol. In this attack, two attacking nodes collude to prevent routes to a target node from being established in the network. Packet Delivery Ratio (PDR) of nodes 2-hops away from the victim drops to 0%. Multi Point Relay (MPR) selection process in OLSR is exploited to achieve route denial...
Mobile Ad-hoc Networks (MANET) is the self organizing collection of mobile nodes. The communication in MANET is done via a wireless media. In order to support the growing need for multimedia and real time applications, QoS support has become essential. However it is a challenge to route QoS in wireless environment due to node's dynamic nature and mobility. This paper aims towards efficient QoS routing...
Geographic forwarding has been widely studied as a routing strategy for mobile ad hoc networks, mainly due to the low complexity, scalability of the routing algorithm. However, in a network with routing holes, existing geographic routing schemes such as GPSR, GOAFR could cause the throughput capacity to drop significantly due to concentration of traffic on the face of the holes. The slope-based stateless...
Contention-based forwarding (CBF) has proven to achieve a good performance in routing in mobile and vehicular ad hoc networks. CBF's main advantage is that it does not require the knowledge about the local neighborhood, eliminating, therefore, the periodic beacon exchange that causes degradation in the network performance, especially when the density of the neighborhood is high. On the other hand,...
In this paper we show how game theory and Gibbs sampling techniques can be used to design a self-optimizing algorithm for minimizing end-to-end delays for all flows in a multi-class mobile ad hoc network (MANET). This is an improvement over the famed Ad-Hoc On-demand Distance Vector (AODV) protocol, that computes the routes with minimal number of hops for each flow in a multi-flow ad-hoc network....
Currently, Transmission Control Protocol (TCP) is the dominant protocol used in the Internet. It is the transport protocol that is responsible for the transmission of around 90% of the Internet traffic. TCP was originally designed for wired network where packet loss due to congestion dominates. Mobile Ad Hoc Network (MANET), one of the wireless networks, has special characteristics which cause several...
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...
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...
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