Improved AODV Protocol For Solving Link Failure I n MANET (original) (raw)
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Mobile Ad-hoc Network (MANET) is a self-configuring, no fixed infrastructure, and fewer networks of mobile nodes connected by wireless network. In the study of Ad-hoc On-demand Distance Vector (AODV) reactive routing protocol is a very important area of research. The developer needs to develop the On-Demand Ad hoc Routing Protocol to design and implementation given best features in simulation test. In this review paper is subjected to 'Ad hoc On demand Distance Vector' (AODV) routing protocol gives best performance with different define options in dynamic topology for various number of nodes and evaluated performance matrices. The different matrices are investigated namely-Packet Delivery Loss, average end-to-end delay and Throughput using NS-2 network simulator test results.
Review on Link Break Avoidance of AODV Routing Protocol in MANET.
International Journal of Engineering Sciences & Research Technology, 2014
Mobile Ad-hoc Network (MANET) is a self-configuring, no fixed infrastructure, and fewer networks of mobile nodes connected by wireless network. In the study of Ad-hoc On-demand Distance Vector (AODV) reactive routing protocol is a very important area of research. The developer needs to develop the On-Demand Ad hoc Routing Protocol to design and implementation given best features in simulation test. In this review paper is subjected to ‘Ad hoc On demand Distance Vector’ (AODV) routing protocol gives best performance with different define options in dynamic topology for various number of nodes and evaluated performance matrices. The different matrices are investigated namely- Packet Delivery Loss, average end-to-end delay and Throughput using NS-2 network simulator test results.
An Efficient Routing Approach and Improvement Of AODV Protocol In Mobile Ad-Hoc Networks
2011
Mobile ad hoc networks (MANETs) consist of a collection of wireless mobile nodes which dynamically exchange data among themselves without the need of fixed infrastructure or a wired backbone network. Due to limited transmission range node to exchange information with any other node in the network. Thus routing is a crucial issue in the design of MANET. On-demand routing protocols for mobile ad hoc networks discover and maintain only the needed routes to reduce routing overheads. They use a flood-based discovery mechanism to find routes when required. Since each route discovery incurs high overhead and latency, the frequency of route discoveries must be kept low for on demand protocols to be effective. The wide availability of wireless devices requires the routing protocol should be scalable. But, as the size of the network increases the on demand routing protocols produce poor performance due to large routing overhead generated while repairing route breaks. The proposed multipath ro...
Stable AODV Protocol in Mobile Ad-Hoc Network
A mobile ad hoc network is a dynamically self-organizing network without any central administrator or infrastructure support. If two nodes are not within the transmission range of each other, other nodes are needed to serve as intermediate routers for the communication between the two nodes [1]. Moreover, mobile devices wander autonomously and communicate via dynamically changing network. Thus, frequent change of network topology is a tough challenge for many important issues, such as routing protocol robustness, and performance degradation resiliency [11][12]. Proactive routing protocols require nodes to exchange routing information periodically and compute routes continuously between any nodes in the network, regardless of using the routes or not. This means a lot of network resources such as energy and bandwidth may be wasted, which is not desirable in MANETs where the resources are constrained [1-3]. On the other hand, on-demand routing protocols don't exchange routing information periodically. Instead, they discover a route only when it is needed for the communication between two nodes [1, 6, 7]. Due to dynamic change of net-work on ad hoc networks, links between nodes are not permanent. In occasions, a node cannot send packets to the intended next hop node and as a result packets may be lost. Loss of packets may affect on route performance in different ways. Among these packet losses, loss of route reply brings much more problems, because source node needs to re-initiate route discovery procedure. In this study we propose a power aware routing protocol which has a new aspect to find out path between source to destination according to available power of node.
Simulation and Comparision of AODV and AOMDV Routing Protocols in MANET
2014
One of the main challenges of Mobile Ad Hoc Networks is the design of robust routing algorithms that adapt to the frequent and randomly changing network topology. MANET is a dynamic wireless network that need no pre-existing infrastructure in which each node acts as a router. Each node acts as an end system but also as a router to forward packets. These nodes are free to move and organizes themselves in the network and changes their positions frequently. The routing protocols are categorized as Proactive, Reactive and Hybrid protocols. Reactive routing approach is widely popular routing category for MANET. The design follows the idea that each node tries to reduce routing overhead by sending routing packets whenever a communication is needed. In this paper we compare AODV and AOMDV routing protocols for MANETs. The AODV is a unipath routing protocol and AOMDV is a multipath version of AODV. AOMDV was designed primarily for highly dynamic ad hoc network where link failures and route breaks occurs frequently. We analyze these routing protocols by extensive simulations in ns-2 simulator and show that how pause time affect their performance. Performance of AODV and AOMDV is evaluated based on Packet Delivery Ratio, throughput, packets dropped, normalized routing overhead, end to end delay and optimal path length.
An Advanced Implementation in AODV Routing Protocol in Mobile Ad Hoc Networks (MANET)
In mobile ad hoc networks, mobile devices are widely used for the purpose of wireless links and dynamically organizing the network topology. AODV (Ad-hoc on-demand Distance vector routing) is a proactive routing protocol which is representative among the most widely researched on-demand ad hoc routing protocols. Previous protocols have shown some drawbacks on performance. AODV and most of the on demand ad hoc routing protocols use single route reply following a reverse path. Rapid change of topology causes that the route reply could not arrive at the source node simultaneously, i.e. after a source node sends many route request messages, the node obtains a reply message, especially on high speed mobility. This increases both in communication delay and power consumption as well as decrease in packet delivery ratio. In order to avoid these drawbacks, we propose an Advanced AODV which tries multiple route replies. The extended AODV is called reverse AODV (ADV-AODV), which has a novel aspect compared to other on demand routing protocols on Ad-hoc Networks: it reduces path fail correction messages and obtains better performance than the AODV and other protocols have. We design the ADV-AODV protocol and implement simulation models using NS-2. Simulation results show that the reverse AODV provides good experimental results on packet delivery ratio, power consumption and communication delay.
Mobile Ad-Hoc Networks: AODV Routing Protocol Perspective
In current years, an enormous research has been observed going on in the research field of Mobile Ad-Hoc Network (MANET). Despite of restricted assets in Mobile Ad Hoc Networks, to structure a proficient and consistent routing protocol is still a tough task. A more intelligent routing approach is required to proficiently use the restricted assets. Moreover the routing algorithms designed for conventional wired networks such as distance vector or link-state, does not level well in without wired situation. Routing approach in Mobile Ad Hoc Networks is a difficult work and has received a great amount of attention from area researchers and quality controller now a day. In this research paper tries to provide a general idea of the existing Mobile Ad Hoc Networks routing protocols their functionality and characteristics. Further, the protocols comparison is given depend upon the MANET routing information and methodologies on the basis of their routing decisions. This research will help the researchers and industry personnel to obtain an overview of the existing routing protocols and propose which one routing protocols could perform improved results with respect to unstable network situation.
Study and Design of New Reactive Routing Protocol Advance AODV for Mobile Ad hoc Networks
2012
A mobile ad-hoc network is a collection of mobile nodes forming an ad-hoc network without the assistance of any centralized structures. These networks shows a new way of network establishment and these are well suited for an environment where either the infrastructure is lost or where deploy an infrastructure is not very cost effective. We have presented the overview of Ad hoc network routing protocols. In this paper we worked to solve the problem of intermediate route building in Ad hoc on demand distance vector routing protocol (AODV) and proposed scheme that enhances the performance of AODV protocol. The scheme proposed by us is AdvanceAd hoc on demand distance vector (AAODV) routing protocol. It consists of the use of Ad-hoc On demand Distance Vector with Backup routing (AODV-BR) and concept of local recovery with limited TTL value in case of failure of local recovery in first attempt i.e. if the neighboring node of the node that find the link break do not have path to destinati...
SR-AODV: A Stable Route-AODV Protocol for Mobile Ad hoc Network
Mobile ad-hoc network is the collection of node which dynamically forms a temporary network without the use of any existing network infrastructure or centralized administration. When the mobility in the network is high and the topology changes frequently the route maintenance overhead in AODV increases. Because nodes can move link breakages can occurs. Long path is more vulnerable to link breakages and requires high control overhead for its maintenance. In this paper we introduce a new modified AODV protocol. This new protocol uses stability factor of intermediate nodes to find the most sable neighbors and therefore most stable path. This new proposed protocol is SR-AODV (Stable Route AODV) protocol. We simulate both AODV and SR-AODV with ns-2 in similar scenario. We find that SR-AODV will show better performance than AODV.
A Novel Routing Protocol For Mobile Ad Hoc Networks
A Mobile Ad-hoc Network (MANET) is a temporary wireless network composed of mobile nodes, in which an infrastructure is absent. If two mobile nodes are within transmission range, they can communicate with each other directly. Otherwise, the nodes in between them have to forward the packets. In such a case, every mobile node has to function as a router to forward the packets for others. Thus, routing is a basic operation for the MANET. With the dynamic and mobile nature of ad hoc wireless networks, links may fail due to topological changes by mobile nodes. As the degree of mobility increases, the wireless network would suffer by more link errors. Ad hoc routing protocols that use broadcast to discover routes may become inefficient due to frequent failures of intermediate connections in an end-to-end communication.