This article is an editorial note submitted to CCR. It has NOT been peer reviewed. Authors take full responsibility for this article’s technical content. Comments can be posted through CCR Online. The ns-2 simulator has limited support for simulating 802.11based wireless mesh networks. We have

mechanisms which use digital signature and hash chain function to secure AODV packets. Secured AODV improves the AODV message format by including the security parameter for securing the routing messages. The goal of this master thesis is to analyze and simulate AODV & SAODV routing protocols using NS2.

we describe Castadiva, a test bed based on lowcost off-the-shelf devices, which is used to test protocols developed for MANETs. Castadiva is completely compatible with the file format used by the ns-2 simulator, so simplifying and allowing a fair comparison between the two systems. We compare

This report accompanies a paper [1] that explored the modeling of wireless links for the evaluation of transport protocols. This report concentrates on modeling scenarios for popular wireless links and gives a reasonable value range for each parameter

Abstract—Simulation for wireless sensor networks has become a challenging exercise due to the hardware design, energy constraints, and deployment of large number of nodes. NS-2 has been widely used in network simulations but does not perform well for wireless sensor networks. This paper provides a

the channel conditions. However, there is little available simulation implementation available for the multi-rate adaptation research purpose. In this project, an extension of rate-adaptive MAC protocol based on the Receiver-Based Auto-Rate (RBAR) was developed to enable the multi-rate simulation in NS2

Abstract — Currently the network simulator 2 (ns-2) is a popular and powerful simulation for IEEE 802.11 wireless networks, including wireless LANs, mobile ad hoc networks (MANETs), and sensor networks. However, the network module has not been extended to IEEE 802.16 broadband wireless access

) and Droptail in terms of packet drop rate and delay. Simulation is done using Network Simulator (ns2.34) Our Simulation results indicate that REM performed better in terms of packet drop rate and RED performs better in terms of end-to-end delay.

The increasing demands and requirements for wireless communication systems especially in settings where access to wired infrastructure is not possible like natural disasters, conferences and military settings have led to the need for a better understanding of fundamental issues in TCP optimization in MANETS.TCP primarily designed for wired networks, faces performance degradation when applied to the ad-hoc scenario. Earlier work in MANETs focused on comparing the performance of different routing protocols. Our analysis is on performance of the variants of TCP in MANETS. Several different variants have been developed in order to refine congestion control in Mobile Adhoc Networks. These variants of TCP perform better under specific scenarios, our Analysis of the variants of TCP is based on three performance metrics: TCP Throughput,Average End- to-End delay and Packet Delivery Fraction in high and low mobility. This analysis will be useful in determining the better variant among TCP Protocols to ensure better data transfer, speed, reliability and congestion control. In this paper we carry out performance study of six variants of TCP to be able to classify which variant of TCP performs better in various possible scenarios in MANETs.

Abstract not found