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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...
Routing in ad-hoc networks is nontrivial due to highly dynamic environment. An Ad Hoc Protocol can also mean an improvised and often impromptu protocol established for a particular specific purpose for these reasons several routing protocols targeted at mobile ad-hoc networks are being proposed. DSDV, AODV, TORA, LAR, and DSR are the most prominent among them. This paper investigates and undertakes...
This paper presents a detailed simulation study of Dynamic Source Routing (DSR), Optimized Link State Routing Protocol (OLSR) and Zone Routing Protocol (ZRP) in different mobile scenarios generated by Random Waypoint model for Mobile Ad hoc networks. The impact of these routing protocols is evaluated with respect to Average End-to-End Delay, Average Jitter, Average Throughput, Normalized Routing Load...
Theoretically, IEEE 802.15.4 is more suitable for resource-constraint ad-hoc network because of its low power consumption characteristic. However, performance of IEEE 802.11 is unknown if its transmission power and receiver sensitivity are limited to match those levels of IEEE 802.15.4. In this paper, the performance evaluation of IEEE 802.11 against IEEE 802.15.4 with those power levels is presented...
An ad-hoc network is the cooperative engagement of collection of mobile nodes without the required intervention of any centralized access point or exiting infrastructure. The need for an efficient routing protocol in mobile ad hoc network is widely proclaimed. A lot of routing protocols have been proposed. They are categorized into three parts according to the way how their routing tables are constructed:...
Mobile ad hoc networks (MANETs) are becoming more essential to wireless communications due to growing popularity of mobile devices. The integration of mobile ad hoc devices inside vehicles has led to another type of networks, called Vehicular Ad hoc Networks (VANETs) which are also becoming important. These networks require specialized routing protocols due to their ad hoc nature. The performance...
A mobile ad hoc network (MANET) is a set of wireless mobile nodes that can communicate with each other without using any fixed infrastructure. It is also necessary for MANET devices to communicate in a seamless manner. There are multiple routing protocols that have been developed for MANETs. There is a need to support real time and multimedia applications in MANETs as they gain popularity. MANETs...
So far there are many research achievements of Ad hoc network which obtained through the software simulation. However, unfortunately, software simulation can only reflect part of the problems and cannot fully reflect the real scenarios which are complicated and dynamic connectivity. For this reason, the paper describes the implemented method of Ad hoc network Terminal, short for ANT, based on the...
Vehicular Ad-hoc NETwork (VANET) is becoming a promising technology in which moving vehicles are able to exchange information between them without the need of infrastructure. The original idea of VANET is for the safety purposes such as warning the drivers when there is an accident happened in the front of the road. Nowadays, VANET is extended to offer more services like downloading emails transfer,...
In the recent years, the Ad-Hoc networks have been the focus of many researches especially in the routing protocols which include Proactive and Reactive routing. The strategy of forwarding the data packets from the source to the destination is the ultimate goal of routing protocols. Hence, the difference between these protocols is based on searching, maintenance and recovering the route path. The...
A mobile ad hoc networks (MANETs) is a dynamic mobile wireless network that can be formed without the need for any pre-existing wired or wireless infrastructure. One of the main challenges in an ad hoc network is the design of robust routing algorithms that adapt to the frequent and randomly changing network topology. This paper proposes a novel routing scheme for MANETs, which adapts the AntNet protocol...
This paper proposes a solution for throughput and stringent delay problems of VoIP in Ad-Hoc mode of IEEE 802.11 WLAN standards. This paper analyses the behaviour different codecs and schemes of WLAN running on VoIP traffic and draws a conclusion on the performance of network based on the criteria of different QOS parameters. Later the suitability of different routing protocols like AODV, DSR, OLSR...
Ad-hoc network is a self organizing network that consists of mobile nodes. Each node acts as a router that forwards the data to other nodes in the network. Ad hoc routing protocols are affected by mobility of the nodes and network scalability. In this paper, the performance of Dynamic Source Routing (DSR) is studied through simulation, using NS2, and QualNet. The effects of mobility and network scalability...
This paper presents an algorithm to include mobility in a routing protocol to reduce packet losses in mobile ad hoc networks (MANETs). The algorithm is applicable to any on-demand routing protocol. If the degree of mobility of any node in any route increases, the route life time decreases. That causes frequent link failures, and results more packet loss and low throughput. Packet loss requires packet...
An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. A number of routing protocols such as Dynamic Source Routing (DSR), Ad Hoc on-Demand Distance Vector Routing (AODV) and Destination-Sequenced Distance-Vector (DSDV) have been implemented. In this paper, an attempt has...
Ad hoc networks are useful for providing communication support where no fixed infrastructure exists or the deployment of a fixed infrastructure is not economically profitable, and movement of communicating parties are allowed. Due to the dynamic topology, developing better routing protocol became a challenging task. The Dynamic Source Routing (DSR) protocol is a simple and efficient routing protocol...
In mobile ad hoc networks (MANETs), service composition faces severe challenges such as the lack of central server, node mobility and wireless network failure, which are usually not considered in web service composition on Internet. This paper designs and implements an on-demand service composition protocol for MANETs with consideration of quality of service (QoS). Based on the well-known Dynamic...
Mobile Ad hoc Networks (MANET) are wireless networks consisting of a collection of mobile nodes with no fixed infrastructure. Due to their decentralized, self-configuring and dynamic nature, MANETs offer many advantages and are easy to install. But with this dynamic topology, mobile ad hoc networks have some challenges like the design of an efficient routing protocol. An example for this challenge...
Without any pre-existing fixed network infrastructure with rapid configuration of wireless connections on-the-fly, network topology in MANETs keep on changing rapidly. Thus achieving data transmissions between wireless nodes in MANETs with improved QoS parameters become a challenging issue. To achieve this one has to concentrate on the routing protocol they choose. In our paper we proposed an algorithm...
Vehicular ad hoc networks (VANETs) are a particular category of mobile ad hoc networks (MANETs) characterized by a high mobility and a reduced connectivity. As a prerequisite to communication, an efficient route between network nodes must be established, and it must be adapt to the rapidly changing topology of vehicles in motion. This is aim of VANET routing protocols. The simulation scene was set...
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