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Mobile ad-hoc network is dynamic in nature with no centralized organizer. The ad-hoc communication depends on the radio range, node mobility as well as intermediate nodes because communication is performed from one device to another with the help of intermediate nodes, that means each mobile node is treated as a route and hence arises the problem of data security in communication, before that proposal...
A Wireless Ad Hoc Network (WANET) is a self configuring network where nodes, connected by wireless links and can move freely by changing its topology constantly. Wireless ad hoc network routing protocols are mainly based on reactive routing that uses minimum hop count. A WANET uses hop count as a parameter to measure the performance of the wireless link between nodes. The wireless links over a long...
In this paper, we developed an efficient algorithm for route discovery and management, and mobility handling for on-demand routing on mobile ad hoc networks (MANET). We applied L-1 and L-2 route caches in each node to manage this algorithm efficiently. For route discovery, we take the content-addressable search feature to access any entry in the route cache in only a few processor cycles. For route...
In Mobile Ad hoc Networks, routes are drastically discovered by broadcasting the control packets. Broadcasting of these packets is useful, but results in high routing packet overhead. In this paper, a route discovery mechanism using an optimum angle selection based approach is proposed in order to improve the network performance by minimizing the flooding of control packets, result in less routing...
In mobile ad hoc networks, node mobility may cause frequent route failures and route rediscoveries, which induce large overhead. Flooding used in a route discovery may cause a large number of unnecessarily redundant forwardings of route request (RREQ) packets, resulting in significant routing overhead. Conventional broadcast schemes, which aim to reduce the overhead in the route discovery by limiting...
Routing attacks have been identified for single path routing in wireless ad hoc networks. The effects of routing attacks on multipath routing have not been addressed so far. In this paper, an approach have been proposed to mitigate the black hole attack using AOMDV (Ad hoc on Demand Multipath Distance Vector) routing protocol. Some improvements have been made in AOMDV protocol. These improvements...
The frequency of route discovery is one of the main performance metrics in the mobile ad hoc networks with source-routing. Conventionally, this metric was derived from the exponential distribution. Although it might be appropriate to the paradigms directed mainly by the voice traffic, the exponential model is inadequate to characterize the scenarios dominated by heavy-tailed data traffic. In this...
In mobile Ad-hoc networks, during the transmission of data, there is a chance of route failure, so that the route rediscovery should be done. Reactive routing protocol determines a route to a specific destination when a particular packet is going to send. Here we propose a reverse reactive routing protocol, based on new route discovery approach, which is used to find an optimal route to the destination...
A mobile ad hoc network (MANET) consists of a group of mobile nodes (MNs) that communicate with each other without the presence of infrastructure. The wireless mobile hosts communicate in a multihop fashion. In multi-hop wireless ad-hoc networks, designing energy-efficient routing protocols is critical since nodes have very limited energy, computing power and communication capabilities. For such protocols...
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...
Biologically inspired networking paradigm introduces throughput gains in an adaptive and robust operation over the classical routing algorithms designed for mobile ad hoc networks (MANETs). However, this performance gain comes at the price of additional overhead as in the case of ant routing protocols. In this context, we present the Scented Node Protocol (SNP) to reduce the overhead requirement while...
An ad hoc network is a collection of computers (nodes)that cooperate to forward packets for each other over a multihop wireless network. Users of such networks may wish to use demanding applications such as Voice over IP, videoconferencing, and streaming media when they are connected through an ad hoc network. Because over provisioning, a common technique in wired networks, is often impractical in...
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...
With the great development of multimedia applications, providing QoS guarantee for Ad Hoc networks is very important. Based on the analysis of local information such as node congestion, node collision impacting on QoS routing, the QoS-aware Multipath Routing (QAMR) Protocol based on local information was proposed to provide QoS guarantee for Ad Hoc networks. The protocol takes bandwidth as the QoS...
Vehicular ad hoc network (VANET) is a special class of wireless mobile communication network. For vehicle-to-vehicle (V2V) communication, suitable routing protocols are needed. A routing metric combining hop counts and retransmission counts at MAC layer is proposed with consideration of link quality and delay reduction. Based on the new routing metric, a cross-layer ad hoc on-demand multipath distance...
We introduce BERS*, an enhanced blocking expanding ring search (BERS) protocol for route discovery in mobile ad hoc networks (MANETs). BERS is an energy efficient alternative that was developed recently based on the expanding ring search (ERS). ERS is widely applied in reactive routing protocols such as DSR and AODV. BERS* is a faster and more energy-time efficient version of BERS. It reduces the...
In this paper an enhancement technique for Dynamic Source Routing protocol (DSR) using relay routing and flooding alternately is proposed. DSR is a popular on demand reactive routing protocol in Mobile Adhoc Networks (MANET) which uses flooding for route discovery and route maintenance when only a node has data to be transmitted. Flooding causes serious redundancy, contention and collision in the...
In this paper, we propose and study how to provide multipath cross-layer service discovery (MCSD) for mobile ad hoc networks (MANETs). Cross-layer service discovery integrates service discovery into route discovery by taking advantage of network-layer topology information and routing message exchange. Multipath service discovery differs from multipath routing in that multipath service discovery can...
The integration cellular networks, wireless local area networks (WLANs), and the new paradigm of mobile ad hoc networks (MANETs) is the trend for next generation mobile networks. And the multi-hop routing mechanism is an open and challenge issue in this area. In this paper, a multi-hop routing mechanism with fuzzy estimation of links for heterogeneous wireless networks (HWNs) is proposed. The mechanism...
In this paper, we developed an efficient algorithm for route discovery and management, and mobility handling for on-demand cache routing on mobile ad hoc networks (MANET). We applied L-1 and L-2 route caches in each node to manage this algorithm efficiently. For route discovery, we developed a simpler and more efficient broadcast approach than in AODV (Ad-hoc On-demand Distance Vector Routing). We...
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