Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
Browse
6 results
Search Results
Item Effect of mobility over performance of the ad hoc networks(2006) Geetha, V.; Aithal, S.; ChandraSekaran, K.An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. A number of routing protocols like Dynamic Source Routing (DSR), Ad Hoc On-Demand Distance Vector Routing (AODV), Destination-Sequenced Distance-Vector (DSDV) and Temporally Ordered Routing Algorithm (TORA) are normally used in ad hoc networks. In this paper an attempt has been made to compare the effect of mobility in case of on-demand reactive routing protocols for mobile ad hoc networks: AODV with traditional proactive DSDV protocol. The performance is analyzed using varying number of connections in the network, mobility pause and speed of the node. These simulations are carried out using the ns-2 network simulator. © 2006 IEEE.Item Performance evaluation of TCP variants over routing protocols in multi-hop wireless networks(2010) Tahiliani, M.P.; Shet, K.C.; Basavaraju, T.G.Wireless internet has become popular in recent years due to the tremendous growth in the number of mobile computing devices and high demand for continuous network connectivity regardless of physical locations. In this paper, we investigate the effects of routing protocols on the performance of Transmission Control Protocol (TCP) variants in multi-hop wireless networks. Through simulations we study the effects of Destination Sequenced Distance Vector (DSDV), Optimized Link State Routing (OLSR), Ad hoc On demand Distance Vector (AODV) and Dynamic Source Routing (DSR) routing protocols on TCP Tahoe, TCP Reno, TCP Newreno, TCP with Selective Acknowledgment (SACK) option and TCP Vegas. The simulations are carried out for static as well as mobile nodes. The performance metric used is throughput. Another metric, expected throughput is used for the comparison of throughput when nodes are mobile. ©2010 IEEE.Item Cognitive network layer in MANETs mobility aware routing protocol(2012) Zakeerhusen, A.G.; Manjappa, M.; Guddeti, G.It is intended to add cognition to make cognitive network layer in order to design and develop Quality of Service (QoS) aware adaptive routing protocol in Mobile Adhoc Networks (MANETs). QoS-aware routing is challenging as nodes in the network are free to move, the topology will be changing dynamically. Performance of AODV will be less when nodes in the network are highly mobile. In this paper, Mobility Aware Routing Protocol (MARP) model is proposed to extract a core part in MANET that is stable in terms of mobility of the nodes. This core part is a subset of MANET mobile nodes through which transmission will be done. Here selection of paths through this extracted core can ensure more QoS in time. The MARP model not only provides a better way to discover a QoS but it considers an efficient route maintenance scheme by selecting the route which has more stability as source is having knowledge about other available paths. Since MARP is multipath routing protocol, route maintenance is easy and it robust. By simulation MARP show better performance over existing AODV-on demand routing protocol. © 2012 Springer-Verlag.Item A trust based approach for AODV protocol to mitigate black hole attack in MANET(2012) Thachil, F.; Shet, K.C.This paper presents a trust based collaborative approach to mitigate black hole nodes in AODV protocol for MANET. In this approach every node monitors neighbouring nodes and calculates trust value on its neighbouring nodes dynamically. If the trust value of a monitored node goes below a predefined threshold, then the monitoring node assume it as malicious and avoids that node from the route path. The experiments reveal that the proposed scheme secures the AODV routing protocol for MANET by mitigating and avoiding black hole nodes. © 2012 IEEE.Item An applicability of AODV and OLSR protocols on IEEE 802. 11p for city road in VANET(Springer Verlag service@springer.de, 2015) Jaiswal, R.K.; Jaidhar, C.D.Vehicular Ad-hoc Network (VANET) improves, makes more safe and comfortable road transportation by using vehicular communication and the Internet. VANET is the subset of Mobile Ad-hoc Network (MANET). Thus, due to their similar characteristics, MANET routing protocols may also be applicable into VANET. Hence, the performance of MANET routing protocols should be evaluated only on IEEE 802. 11p communication standard, which is specifically designed for VANET communication, with urban and non-urban vehicular traffic. This work compares the performance of Ad-hoc On-Demand Distance Vector (AODV) routing protocol with Optimized Link State Routing protocol (OLSR) on two different road network scenarios, particularly a complex road network, which represents the city road network, having multiple crossroad and an intersection of two roads. We used two distinct simulators such as Vehicular Ad-hoc Networks Mobility Simulator (VANETMOBISIM), to simulate the city road network and vehicular traffic in an area of 700mx700m and NS-2. 35 network simulator to simulate the communication network. AODV and OLSR performances are assessed on different transmission range, i. e. 250m and 500m with four different data generation rate of 512, 1024, 1536 and 2048 Kbps. The primary goal of this work is to do an assessment to scrutinize the applicability of AODV and OLSR protocols in VANET with different traffic scenario and transmission ranges of IEEE 802. 11p standard. © Springer International Publishing Switzerland 2015.Item Impact of realistic mobility models on the performance of VANET routing protocols(Institute of Electrical and Electronics Engineers Inc., 2023) Sundari, K.; Senthil Thilak, A.Vehicular ad hoc networks (VANETs) are a special class of ad hoc networks, wherein vehicles integrated with computing and communication capabilities exchange information among themselves and the roadside units through wireless media. Vehicular communication plays a vital role in Intelligent Transportation Systems (ITS), especially to ensure safety and traffic management. Further, VANET communication finds wide application in autonomous driving systems. With the massive increase in the number of vehicles being used and prevailing complex traffic conditions, designing routing protocols for efficient communication in VANETs has become more challenging and captured the attention of the research community. In the process of developing new routing protocols, it is prohibitively expensive to deploy real-world test beds to analyze the efficiency of new protocols against the existing ones. Hence, research in vehicular communication greatly depends on simulation. Due to the highly dynamic nature of vehicles in real-time traffic environments, an appropriate choice of mobility models that accurately reflect real-world traffic behavior has a greater impact in the study on performance analysis of VANET routing protocols. In view of this, this paper explores the impact of the most commonly used realistic mobility models on the performance of VANET routing protocols, under varied real-world traffic scenarios. The performance of different routing protocols is compared with respect to the QoS metrics, namely, average goodput, MacPhy overhead, and BSM packet delivery ratio. Simulators such as Network Simulator 3 (NS3) and Simulation of Urban Mobility (SUMO) were used to conduct the experiment. © 2023 IEEE.