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Search Results: 1 - 10 of 32 matches for " ZRP "
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B.A.S Roopa Devi,J.V.R Murthy,G.Narasimha,R.Hyndavi
International Journal of Engineering Sciences and Emerging Technologies , 2013,
Abstract: A mobile Ad-hoc network (MANET) is a dynamic multi hop wireless network established by a collection of mobile nodes in which there is no centralized administration. Due to the node mobility and dynamic network topology, the routing is one of the most important challenges in ad-hoc networks. All the nodes in the network should be cooperative so that the exchange of information would be successful. This cooperation process is called as routing. Election of routing protocols in MANET (Mobile Ad Hoc Network) is a great challenge, because of its frequent topology changes and routing overhead. In this paper, the performance of reactive (AODV and DSR) and hybrid (ZRP) routing protocols has been compared. The performance differentials are analyzed on the basis of Packet Delivery Ratio, Throughput and End to End Delay simulated in qualnet6.1.
Efficient Implementation of Dynamic Routing With Security Considerations
International Journal of Computer Science and Communication Networks , 2011,
Abstract: Now-a-days security is one of the major issues for data communication over wireless and wired networks. The past work on the designs of cryptography algorithms and system infrastructures. Apart from that the authors proposed a dynamic routing algorithm called improved dynamic routing with security consideration, which is based on the concept of Zone Routing Protocol (ZRP) that could randomize delivery paths for data transmission. The algorithm is easy to implement and compatible with popular routing protocols, such as the Routing Information Protocol (RIP) in wired networks and Destination-Sequenced Distance Vector (DSDV) protocol in wireless networks, without introducing extra control messages. This improves security as well as controls traffic in the network. A clear study on the proposed algorithm is presented, and a series of simulation experiments are conducted to verify the results and to show the capability of the proposed algorithm.
International Journal of Engineering Science and Technology , 2010,
Abstract: Mobile Ad hoc wireless Networks (MANETs) that do not need any fixed infrastructure. They are characterized by dynamic topology due to node mobility, limited channel bandwidth, and limited battery power of nodes. The key challenge in the design of ad hoc networks is the development of dynamic routing protocols that can efficiently findroutes between two communicating nodes. Thus, many ad hoc routing protocols have been proposed in recent years. All these routing protocols attempt to provide a high data packet delivery ratio and low routing control traffic at the same time. These routing protocols can be classified into three categories: proactive, reactive and hybrid routing protocols.
Mobile Wireless Enhanced Routing Protocol in Adhoc Networks
International Journal on Computer Science and Engineering , 2010,
Abstract: Adhoc network consists of peer-to-peer communicating nodes that are highly mobile. As such, an ad-hoc network lacks infrastructure and the topology of the network changes dynamically. The task of routingdata from a source to a destination in such a network is challenging. Both proactive and reactive routing protocols prove to be inefficient under these circumstances. Most of the ad-hoc protocols supportpresence of the bidirectional links but in reality the Adhoc network may consists of heterogeneous nodes with different transmission ranges. Thus, unidirectional links are formed. In this paper we consider a routing protocol called the Enhanced Zone Routing Protocol(ZRP) combines the advantages of the proactive (table driven) and reactive (demand driven) approaches to provide scalable routing and to create bidirectional links in the Adhoc networks. It is also proposed that, the stable routes and a query enhancement mechanism inenhanced Zone Routing Protocol to maximize the throughput and for effective utilization of bandwidth.
Band-width Efficient Multipoint Relays Selection in Optimized Link State Routing Protocol for Mobile Ad-hoc Networks
I. Alagiri,V. Madhuviswanatham,P. Venkata Krishna
Information Technology Journal , 2012,
Abstract: Mobile ad-hoc networks (MANETs) are self organizing network, which exchange data among themselves, through single hope or multi hope. Designing an effective routing protocol is a crucial issue in MANET, due to highly dynamic topology. The author proposes BEMPRs-OLSR protocols, which reduces control overheads, by selecting Multi point relays. Multipoint relays where selected, by considering the node which is having maximum out degree, if there is a tie in that value maxim-mum bandwidth node will be consider as MPRs. The path which was formed from source to destination through MPRs, should be a loop free path, this was achieved by maintaining more the one node as MPRs before breaking the tie among the nodes, that are competing for MPRs. Simulation was performed in network simulator 2, shows that BEMPRs-OLSR performs well when compare to any other protocols.
Performance Evaluation of Reactive, Proactive and Hybrid Routing Protocols Based on Network Size for MANET
Dr. Ritika,Dr. Nipur
International Journal of Computer Science and Security , 2012,
Abstract: Ad hoc network is a collection of wireless mobile nodes where wireless radio interface connectseach device in a MANET to move freely, independently and randomly. Routing protocols inmobile ad hoc network helps to communicate source node with destination node by sending andreceiving packets. Lots of protocols are developed in this field but it is not easier to decide whichone is winner. In this paper, we present investigations on the behavior of five routing protocolsAODV (Ad hoc On demand distance vector), DSR (Dynamic Source Routing), DYMO (DynamicMANET On demand), OLSR (Optimized link state routing) and ZRP (Zone routing protocol)based on IEEE 802.11CSMA/CA MAC protocol are analyzed and compared using QualNetsimulator on the basis of performance metrics such as Average Jitter, Total Packets Received,Packet Delivery Ratio, End-to-End Delay, Throughput, Average Queue Length, Average time inQueue, dropped packets due to non availability of routes and Energy consumption in transmit andreceive Mode. To test competence and effectiveness of all five protocols under diverse networkscenarios costing is done by means varying load by varying CBR data traffic load, changingnumber of Nodes and mobility. Finally results are scrutinized in from different scenarios to providequalitative assessment of the applicability of the protocols.
Comparative Analysis of Ad hoc Routing Unicast Protocols-Using WiMax Enviorment
Preeti Arora,G. N. Purohit
International Journal of Computer Science Issues , 2011,
Abstract: Worldwide Interoperability for Microwave Access (WiMAX) is a technology that bridges the gap between fixed and mobile access and offer the same subscriber experience for fixed and mobile user. Demand for such type of mobile broadband servicesaccess, which is further extended to support portability and mobility based on IEEE 802.16e, also known as Mobile WiMAX. However, frequent topology changes caused by node mobility make routing in Mobile WiMAX networks a challenging problem. In this paper, we focus upon those routing protocols especially designed for wireless networks. Here, we study and compare the performance of four ad hoc routing protocols (AODV, DSR, and ZRP) for Mobile WiMAX environment under the assumption that each of the subscriber station has routing capabilities within its own network. From our simulation, we found that ZRP and AODV protocols outperform DSR and applications are growing rapidly as it provides freedom to the subscribers to be online wherever they are at a competitive price and other significant facilities such as increasing amounts of bandwidth, using a variety of mobile and nomadic devices etc. [1][2]. The earliest version of WiMAX is based on IEEE 802.16 and is optimized for fixed and nomadic which is further extended to support portability and mobility based on IEEE 802.16e, also known as Mobile WiMAX. However, frequent topology changes caused by node mobility make routing in Mobile WiMAX networks a challenging problem. In this paper, we focus upon those routing protocols especially designed for wireless networks. Here, we study and compare the performance of four ad hoc routing protocols (AODV, DSR, and ZRP) for Mobile WiMAX environment under the assumption that each of the subscriber station has routing capabilities within its own network. From our simulation, we found that ZRP and AODV protocols outperform DSR.
Enhanced ZRP Protocol for Mobile Ad-hoc Networks
M.N Sree Ranga Raju,Jitendranath Mungara
International Journal of Wireless & Mobile Networks , 2011,
Abstract: Mobile Adhoc Network(MANET) is the collection of independent mobile nodes that can communicateto each other via radio waves. The mobile nodes that are in radio range of each other can directlycommunicate, whereas others need the aid of intermediate nodes to route their packets. These networksare fully distributed and can work at any place without the help of any infrastructure. This propertymakes these networks highly exile and robust. There are many protocols which are proposed on theissues of MANET but they have not considered all possibility of routing in intra as well as inter zone. Themain motto of the research is upgrading the existing ZRP Model with enhancement of namely MDVZRP,SBZRP, QCS to achieve better performance. The design goals of ZRP enhancement are to enhance theperformance in the area such as quick route reconfiguration, route acquisition delay, and low mobilityscenarios considering the all possible way of routing in inter as well as intra zone.
ZRP with WTLS Key Management Technique to Secure Transport and Network Layers in Mobile Adhoc Networks
G.Padmavathi,P.Subashini,D.Devi Aruna
International Journal of Wireless & Mobile Networks , 2012,
Abstract: A mobile ad hoc network (MANETs) is a self-organizing network that consists of mobile nodes that are connected through wireless media. A number of unique features, such as lack of infrastructural or central administrative supports, dynamic network topologies, open communication channels, and limited device capabilities and bandwidths, have made secure, reliable and efficient routing operations in MANET a challenging task. The ultimate goal of the security solutions for MANET is to provide security services, such as authentication, confidentiality, integrity, anonymity, and availability to mobile users. To achieve the goals, the security solution need for entire protocol stack. The primary focus of this work is to provide transport layer security for authentication, securing end-to-end communications through data encryption. It also handles delay and packet loss. The MANET transport layer protocols provide end-toend connection, reliable packet delivery, flow control and congestion control. The proposed model combines Zone Routing Protocol(ZRP) with Wireless Transport Layer Security(WTLS) provides authentication, privacy and integrity of packets in both routing and transport layers of MANET and also to defend against Denial of Service(DoS) attack.ZRP with WTLS is found to be a good security solution even with its known security problems. The simulation is done using network simulator qualnet 5.0 for different number of mobile nodes. The proposed model has shown improved results in terms of Average throughput, Average end to end delay, Average packet delivery ratio and Average jitter.
Analysis and Simulations of Routing Protocols with Different Load Conditions of MANETs
Poonam Pahuja,Sanjay Pahuja,Dr. Tarun Shrimali
International Journal on Computer Science and Engineering , 2012,
Abstract: In this paper, we have compared important characteristics of MANET proactive routing protocol (DSDV), reactive protocols (AODV, DSR and TORA) and hybrid protocol (ZRP). Extensive simulations are being carried out with different load conditions of MANETs. The offered network loads in the performance plots are characterized by three parameters i.e. packet size, number of connections i.e. source destination pair and packet arrival rate.
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