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A mobile ad hoc network (MANET) is a set of movable devices that is established without wired medium forming with various topologies. Mantes are not using infrastructure as wired network use and anytime, anywhere can be established. The direction-finding algorithms are classified into two parts in this paper (1). proactive DSDV (table driven) and (2). reactive DSR (On demand) algorithms. We simulate...
This paper analyzes one type of denial of service attacks in Mobile Adhoc Networks called SYN flooding attack, and its impact on the quality of service parameters. Denial of service attacks generally take away the resources and the services of the node and deny further legitimate services. In SYN flooding attack, an attack node sends many TCP (Transmission Control Protocol) SYN requests with spoofed...
Concurrent multipath transfer (CMT) can improve data throughput, bandwidth resource utilization and system robustness. Whereas, CMT also leads to serious reordering problem, especially in heterogeneous wireless networks. Since more than one path are used, an efficient CMT scheduling algorithm is needed at the sender. For existing packet scheduling, packet's rate of entering the sender queue is usually...
Vehicular Ad-hoc Network (VANET) is a new network technology where the cars are used as mobile nodes to form a communication network. In VANET, routing protocols have a significant role in terms of the performance because they determine the way of sending and receiving packets between mobile nodes. In this paper, we examine and analyze the performance of Ad-hoc On-Demand (AODV), Dynamic Source Routing...
In this paper, a cross layer protocol named Location Based Energy Efficient Routing (LBEER) is proposed. The proposed LBEER protocol addresses the physical, link and network layer issues by selecting an optimal forwarding neighbor based on Packet Reception Rate (PRR), Packet Velocity (One-hop delay) and Residual energy metrics. An analytical model for optimal forwarding neighbor selection was derived...
The mobility of nodes in a Mobile Ad hoc Network results in frequent changes of network topology making routing in MANETs a challenging task. The efficient routing protocols can provide significant benefits to mobile ad hoc networks, in terms of both performance and reliability. Many routing protocols for such networks have been proposed so far. Some studies have been reported in the literature evaluating...
A network model for the near space communication network is established by the means of OPNET as a development environment, and a medium access control (MAC) protocol based on TDMA (time division multiple access) is designed, leading to the channel resource being shared efficiently. A formula for the average end to end (ETE) delay of the network is delivered according to the queue theory. Simulation...
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