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Characteristics of Mobile ad hoc networks are high mobility and frequent link failures that result in low throughput and high end-to-end delay. Multipath routing is an attractive option to reduce the number of route discoveries due to such broken paths so that alternate paths are available. Existing approaches to multipath routing employs pre-computed routes determined during phase of route discovery...
In this paper, an efficient routing protocol for patient monitoring system in rural areas was proposed using wireless sensor network (WSN) so that the patients can be treated within less time. In this system, a village with GSM network is considered and the people in that village are continuously monitored using AMON sensor, an advanced medical monitoring and alert system. All the AMON's work in ADHOC...
Wireless Sensor Communication Networks have more concern on its routing techniques. Since the WSCNs nodes are battery powered, routing algorithms should assure the concept of energy saving without affecting the other performance metric like Throughput, Delay and Packet delivery ratio etc. The modified AOMDV called as Enhanced Energy Efficient Multipath Routing Protocol ( EEEMRP )is a proposed algorithm...
In an ad hoc network, communication distance is limited by the need to minimize the power consumption of the communication nodes. To deal with this, we usually employ multi-hop relaying functions that use the number of hops as a routing metric. But in an environment where traffic density is high, the same relaying node may be used by multiple sending nodes due to their spatial distribution. Data packets...
Mobile ad hoc network (MANET) has a distributed and uncontrolled nature in which all nodes are considered trusted and contribute in the route discovery process. Accordingly, MANET is vulnerable to many types of routing attacks. One of the most popular MANET routing protocol that is vulnerable to different attacks is ad hoc on demand distance vector (AODV) routing protocol. In this paper, a mobile...
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...
Extensive use of wireless sensor networks for various applications like surveillance, habitat monitoring, battlefield etc., demand high probability of coverage and connectivity. The first issue deals with how well the sensor network will be able to detect the event by the sensor nodes and secondly, how efficiently the information will be communicated to the gateway node. In many applications, sensors...
A Mobile ad-hoc network (MANET) is a temporary network set up by wireless mobile computers (or nodes) moving arbitrary in the places that have no network infrastructure. Due to this it is vulnerable to various kinds of security threats. Black hole attack is one of such threats. This paper lead emphasis on AODV routing protocol in MANET, along with various types of security attacks and security threats...
MANET nodes use cooperative multi-hope packet forwarding technique hence they also perform the functionality of router. The individual nodes are constrained by resources such as battery life, limited network bandwidth and CPU cycles. To save its resources a node may deny to forward packets to others for saving the resources. This could lead to degradation of network performance. To mitigate this problem,...
A Wireless Sensor Network (WSN) comprises of a number of sensor nodes which help to monitor physical conditions such as temperature, sound, pressure, motion, etc. These Sensor Networks are increasingly being used in applications that are hazardous to human health or require much manual labour. One such application is that of monitoring the temperature of a large number of compost heaps spread over...
Communication in Mobile Ad-Hoc Network (MANET) is based on mutual trust between the participating nodes. Due to features of open medium, dynamic changing topology, lack of centralized monitoring and management, MANETs are vulnerable to various security attacks. Hence, finding a secure and trustworthy end-to-end path in MANET is a real challenge. The paper presents a solution for trustworthy path discovery...
Mobile ad hoc networks (MANET) are composed of many mobile devices with wireless interfaces. The networks operate well without any infrastructure. The source node can relay packets to the destination node through other nodes in MANET. However, the misbehaviors of nodes are common phenomenon in MANET. These misbehaviors of the selfish nodes will impact the efficiency, the reliability, and the fairness...
Wireless ad-hoc networks are highly dynamic networks for which routing is a challenging task. Existing routing protocols whether reactive, proactive or hybrid showed limitations in various situations. To optimize the behavior of the routing nodes, the academic community is recommending the reliance on an autonomic approach that would guarantee self-adaptation, self-configuration, self - management,...
In order to better the poor validity of routing protocol and control overhead of the patient monitoring system based on ZigBee, comparing and analysing of two kinds of DSR and AODV routing algorithm, and using OPNET simulation tool for the performance of AODV routing protocol simulation. Making simulation about AODV routing protocol for the transmission delay, RREQ send the number, send traffic and...
MANET is a highly challenged network environment due to its special characteristics such as decentralization, dynamic topology and neighbor based routing. Each node in this network relays its neighbors for routing and message forwarding. Cooperation between nodes should be established without any centralized authority. However, neighbor based communication without any trust worthiness creates a major...
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