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Routing packets towards their destinations is a key task in mobile ad-hoc networks due to nodal mobility and dynamic topology of the network. Many well performing routing protocols for MANETs are proposed and implemented by considering these inherent properties. ad-hoc On-demand Distance Vector (AODV) is one such protocol which performs better among similar MANET routing protocols. AODV chooses a...
Mobile Ad hoc Network (MANET) is a collection of wireless mobile nodes which are autonomous, self organized and dynamic in nature. In this network due to mobility nodes are moving randomly, resulting in topology change. This topology change leads to frequent breakage of link. To repair the broken link AODV and DSR uses broadcasting mechanism. Broadcasting floods control packets. Flooding results in...
On the case of most important systematic issue that must need to be solved in means of implementing a data transmission algorithm on the source of Mobile adhoc networks (MANETs). That is, how to save mobile nodes energy on meeting the requirements of applications or users as the mobile nodes are with battery limited. On while satisfying the energy saving requirement, hence it is also necessary of...
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...
Mobile ad-hoc network is a group of mobile nodes without infrastructure and self-configured in nature. Each node in MANET can move freely in Omni direction thus causes change in links to other devices frequently and they must forward packet transmission irrespective of its personal use; because of this a router is required. So the three prominent routing protocols in MANET such as DSR, AODV and DSDV...
In MANET, all nodes are mobile in nature and having limited battery charge. Continuous change in position and connection degrades the battery charge of the nodes therefore it is necessary to save battery of those nodes which are having low battery so that the network lifetime can be long lasting. It is really very significant to increase lifetime of MANET. In order to enhance the lifetime of MANET;...
Mobile ad-hoc networks (MANETs) are characterize by time-varying nature of the links and network topology. There are transmission impediments like fading, path loss, blockage and interference that add to the inclined behavior of wireless channels. In such an environment, the network must accommodate the changes, providing end-end packet delivery while at the same time incurring low control overhead...
Many routing protocols in mobile ad-hoc networks have been developed by many researchers. One of ad-hoc routing protocol types is the on-demand routing that establishes a route to a destination node only when required. However, most of on-demand routing protocols reestablish a new route after a route break. In this paper, we propose a new route maintenance algorithm to avoid route breaks because each...
A detailed overview of Wireless Mesh Network (WMN) and the routing protocols used in it is given in this paper. Along with that a comparative analysis of different categories of ad hoc routing protocols is performed on a set of simulations which differs in the number of wireless nodes participating. The analysis is based on different performance metric like Delay, Throughput, Average Route Discovery...
In Mobile Ad-Hoc NETwork (MANET) there are many uncertainties like topological changes, number of nodes, mobility etc. Since the design of routing protocol is carried out by considering a particular environment, no existing routing protocol performs well for all possible environments and requirements. This paper proposes an adaptive protocol selector for MANET which helps in selecting an optimum routing...
In mobile ad-hoc networks, the data tends to be intercepted by malicious node when using a single path for transmission. In this paper, we propose a secure routing protocol based on multipath routing technology, namely AODVsec, which divides a data unit into several data pieces and transmits these pieces through different paths. By setting security level on each node, AODVsec limits the maximum number...
Ad-hoc networks have become a novel area of research and development in mobile computing. In this part, routing protocol is important to improve efficiency of ad-hoc networks. Ad-hoc routing protocols have been studied and developed, such as DSDV, AODV, DSR, and LAR. In this paper, we propose a new routing protocol that is named by advance-LAR based on radio-range of destination node. This protocol...
Dynamic and efficient routing is one of the key challenges in wireless ad hoc networks. In this paper, based on a reactive AODV protocol, a novel semi-proactive routing protocol, named SP-AODV, is presented that uses proactive routing for some special nodes. The efficiency of the new protocol lies in the fact that some nodes with certain conditions will dynamically update some sections of their routing...
In most of the ad-hoc routing protocols, a static link lifetime (LL) is used for a newly discovered neighbors. Though this works well for networks with fixed infrastructures, it is inadequate for ad-hoc networks due to nodes mobility and frequent breaks of links. To overcome this problem, routing protocols with estimated LL using nodes affinity were introduced. However, these protocols also used the...
In this paper, we consider the performance behavior of two protocols: AODV and DSR using TwoRayGround model. We study the routing efficiency of the ad-hoc sensor network and compare the performance of two protocols for different scenarios using the routing efficiency concept. By computer simulations, we found that the routing efficiency of DSP protocol is better than AODV protocol.
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