Due to the unique characteristic of Mobile Ad hoc Network (MANET) and lack of security in its routing protocol, MANET is vulnerable to various attacks such as Black hole. In this paper we study a Black hole attack on one of ad hoc routing protocol called AODV (Ad hoc On Demand Vector). There have been many works done to solve this problem but most of them introduced extra overheads. In this pap...

AODV is a kind of on-demand distance vector routing protocols, in the light of the characteristics of AODV (Ad hoc On Demand Distance Vector ), AODV was revised in the paper, and on the basis of it, a kind of multipath AODV reliable data transmission routing algorithm based on LQI (LBM_AODV) was put forward. The algorithm mainly revised AODV protocol from the link information extraction, RREQ a...

Wireless Mesh Networks (WMNs) can be the key technology for the future of wireless networks. However, WMNs implementation still has many issues to be resolved especially on finding the best path to forward information. According to many researches, one of the most important component in WMNs is the routing protocol and how to make it efficient in performing the requirements of WMNs. Directional...

Mobile Ad hoc Network (MANET) is a wireless network which has dynamic nature with infrastructure less without a central administration. In MANETs link failure occurs due to topological changes of mobile node which causes high data loss and delay, so the performance is enhanced by predicting the link break in prior. The most challenging fact in the routing process is affording the energy profici...

Underwater wireless sensor networks (UWSNs) are significantly different from terrestrial in the following aspects: low bandwidth, high latency, variable topology, limited battery, processing power and so on. These new features pose many challenges to design of self-organizing routing protocol for UWSNs. This paper focuses on application Ad Hoc On-demand Distance Vector (AODV) In order solve pro...

In mobile ad hoc networks, the absence ofinfrastructure and the consequent absence of authorizationfacilities impede the usual practice of establishing a practicalcriterion to distinguishing nodes as trusted and distrusted.Since all nodes in the MANETs would be used as router inmulti-hop applications, secure routing protocols have vital rulein the security of the network. So evaluating the perf...

This paper presents a new routing metric for mobile ad hoc networks. It considers both coverage area as well as link expiration information, which in turn requires position, speed and direction information of nodes in the network. With this new metric, a routing protocol obtains routes that last longer with as few hops as possible. The proposed routing metric is implemented with Ad Hoc On-Deman...

Ad hoc Network is a temporary network and these networks nodes are free to move about and organize themselves into a network. These nodes change position frequently. A Reactive (on-demand) routing strategy is a popular routing category for wireless ad hoc routing. The design follows the idea that each node tries to reduce routing overhead by sending routing packets whenever a communication is r...

A mobile ad hoc network (MANET) is a wireless network that uses multi-hop peer to peer routing. A user can move anytime in an ad hoc scenario and, as a result, such a network needs to have routing protocols which can adopt dynamically changing topology. To accomplish this, a number of ad hoc routing protocols have been proposed and implemented such as, Ad hoc On-Demand Distance Vector routing (...

In Manet’s Dynamics and Robustness are the key features of the nodes and are governed by several routing protocols such as AODV, DSR and so on. However in the network the growing resource demand leads to resource scarcity. The Node Mobility often leads to the link breakages and high routing overhead decreasing the stability and reliability of the network connectivity. In this context, the paper...