Radio Propagation Models: A Performance Analysis based Impact of Sparse and Dense Deployment of Nodes under Different Propagation Models in Mobile Ad-hoc Networks (MANETs)

2021 ◽  
Author(s):  
Altaf Hussain ◽  
Muhammad Rafiq Khan
Keyword(s):  
Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Signal Strength ◽  
Propagation Model ◽  
Strong Impact ◽  
Propagation Models ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
The Impact

Abstract Mobile Ad-hoc Network (MANET) is the most emerging and fast expanding technology since the last two decades. One of the major issue and challenging area in MANET is the process of routing due to dynamic topologies and high mobility of mobile nodes. The exchange of information from source to a destination is known as the process of routing. Spectacular amount of attention has been paid by researchers to reliable routing in ad-hoc networks. Efficiency and accuracy of a protocol depends on many parameters in these networks. In addition to other parameters node velocity and propagation models are among them. Calculating signal strength at receiver is the responsibility of a propagation model while mobility of nodes is responsible for topology of the network. A huge amount of loss in performance is occurred due to variation of signal strength at receiver and obstacles between transmissions. Simulation tools are developed to analyze the weakness and strength of protocols along with different parameters that may impact the performance. The choice of a propagation models have an abundant effect on performance on routing protocols in MANET. In this research, it has been analyzed to check the impact of different propagation models on the performance of Optimized Link State Routing (OLSR) in Sparse and Dense scenarios in MANET. The simulation has been carried out in NS-2 by using performance metrics as average Throughput, average packet drop and average latency. The results predicted that propagation models and mobility has a strong impact on the performance of OLSR in considered scenarios.

scholarly journals Impact of Sparse and Dense Deployment of Nodes Under Different Propagation Models in Manets

2020 ◽  
Vol 9 (1) ◽  
pp. 61-84
Author(s):  
Altaf Hussain ◽  
Tariq Hussain ◽  
Iqtidar Ali ◽  
Muhammad Rafiq Khan
Keyword(s):  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Performance Metrics ◽  
High Mobility ◽  
Signal Strength ◽  
Propagation Model ◽  
Strong Impact ◽  
Mobile Nodes ◽  
Propagation Models ◽  
The Impact

Mobile Ad-hoc Network (MANET) is the most emerging and fast-expanding technology in the last two decades. One of the major issues and challenging areas in MANET is the process of routing due to dynamic topologies and high mobility of mobile nodes. The efficiency and accuracy of a protocol depend on many parameters in these networks. In addition to other parameters node velocity and propagation models are among them. Calculating signal strength at the receiver is the responsibility of a propagation model while the mobility of nodes is responsible for the topology of the network. A huge amount of loss in performance is occurred due to the variation of signal strength at the receiver and obstacles between transmissions. In this paper,it has been analyzed to check the impact of different propagation models on the performance of Optimized Link State Routing (OLSR) in Sparse and Dense scenarios in MANET. The simulation has been carried out in NS-2 by using performance metrics as average packet drop average latency and average Throughput. The results predicted that propagation models and mobility have a strong impact on the performance of OLSR in considered scenarios. 

scholarly journals Distance-Based Performance Evaluation of Two-Ray Ground and Free Space Propagation Models in Mobile Ad-hoc NETwork (MANET)

2021 ◽  
Author(s):  
ALTAF HUSSAIN
Keyword(s):  
Performance Evaluation ◽  
Free Space ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Performance Metrics ◽  
Signal Strength ◽  
Propagation Model ◽  
Propagation Models ◽  
Mobile Ad Hoc

Abstract Mobile Ad-hoc NETwork (MANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre-existing infrastructure, such as routers in wired networks or access points in managed wireless networks. One of the major issue and challenging area in MANET is the process of routing due to dynamic topologies and high mobility of mobile nodes. The efficiency and accuracy of a protocol depend on many parameters in these networks. In addition to other parameters node velocity and propagation models are among them. Calculating signal strength at the receiver is the responsibility of a propagation model while the mobility of nodes is responsible for the topology of the network. A huge amount of loss in performance is occurred due to the variation of signal strength at the receiver while increasing and decreasing the distance of nodes. In this paper, a novel approach is identified and portrayed of the said propagation models based on distance from each other. It has been analyzed to check distance based performance evaluation of Two Ray Ground and Free Space Radio Wave Propagation Models on the performance of Ad-hoc On-demand Distance Vector (AODV) Routing Protocol in MANET. The simulation has been carried out in (Network Simulator-2) NS-2 by using performance metrics that are Average Throughput (kpbs), Average Latency (milliseconds) and Average Packet Drop (packets). The results predicted that propagation models and mobility have a strong influence on the performance of AODV in considered distance based scenario.

Effects of Propagation Models on AODV in Mobile Ad-hoc Networks

2014 ◽  
Vol 79 (1) ◽  
pp. 389-403 ◽  
Author(s):  
Ashok M. Kanthe ◽  
Dina Simunic ◽  
Ramjee Prasad
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc ◽  
Propagation Models ◽  
Mobile Ad Hoc ◽  
Hoc Networks

A Route Selection Mechanism for Mobility of Node in Mobile Ad Hoc Network

2012 ◽  
Vol 224 ◽  
pp. 520-523
Author(s):  
Hyun Jong Cha ◽  
Jin Mook Kim ◽  
Hwang Bin Ryou
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Base Stations ◽  
Movement Direction ◽  
Wired Networks ◽  
Mobile Ad Hoc ◽  
Hoc Networks

A mobile ad-hoc network is a method of communication between different nodes (mobile devices) without the use of base stations, which are used in wired networks. In a Mobile ad-hoc network, nodes can play the role of a receiver, sender, or a relay. As movement is flexible in Mobile ad-hoc networks and nodes have limited resources, nodes may join the communication or exit it at any time. Therefore, for Mobile ad-hoc networks, routing techniques - selecting communication routes and maintaining them – is considered important in an environment of constantly changing network topology. To overcome this problem, this paper proposes a reliable routing protocol based on MP-AOMDV, which monitors changes in signal strength not only for GPS signals but reception signals as well. Although MP-AOMDV was researched under the assumption of fixed movement direction and speed, this paper proposes a routing technique that works with changing movement direction or speed of nodes.

scholarly journals PERFORMANCE ANALYSIS OF GEOGRAPHICAL ROUTING PROTOCOL IN MOBILE AD HOC NETWORK

2021 ◽  
Vol 9 (1) ◽  
pp. 191-197
Author(s):  
Omar Faruque, Tadiwa Elisha Nyamasvisva, Abdullahi Mujaheed Saleh, Hasliza Binti Hashim
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Routing Protocol ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Research Work ◽  
General Idea ◽  
Geographical Routing ◽  
Mobile Ad Hoc ◽  
Hoc Networks

Wireless technology has brought a very advanced change in the field of the internet. It has given rise to many new applications. In recent years, a lot of work has been done in the field of Mobile Ad hoc Networks (MANET) which makes it so popular in the area of research work. MANET is an infrastructure-less, dynamic network that consists of a collection of wireless mobile nodes, and the communication between these nodes has been carried out without any centralized authority. There are several network performance metrics, Packet Loss and End-to-End Delay which can be taken into account, for getting a general idea about the performance of the Geographical Routing Protocol in Mobile Ad-Hoc Networks. The proposed research will evaluate the parameters which affect the communication in the Geographical Routing Protocol in Mobile Ad-Hoc Networks.

Security Issues in Mobile Ad Hoc Networks

2014 ◽  
pp. 176-221 ◽  
Author(s):  
Sunil Kumar ◽  
Kamlesh Dutta
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Mobile Nodes ◽  
Security Vulnerabilities ◽  
Security Issues ◽  
Mobile Ad Hoc ◽  
Hoc Networks

A Mobile Ad hoc NETwork (MANET) is a self-organizing, infrastructure-less network of mobile nodes connecting by wireless links. In operation, the nodes of MANETs do not have a central control mechanism. It is known for its properties of routable network, where each node acts as a router to forward packets to other specific nodes in the network. The unique properties of MANET have made it useful for large number of applications and led to a number of security challenges. Security in the mobile ad hoc network is a very critical job and requires the consideration of different security issues on all the layers of communication. The countermeasures are the functions that reduce or eliminate security vulnerabilities and attacks. This chapter provides a comprehensive study of all prominent attacks in Mobile Ad Hoc Networks described in the literature. It also provides various proactive and reactive approaches proposed to secure the MANETs. Moreover, it also points to areas of research that need to be investigated in the future.

Data Caching in Mobile Ad-Hoc Networks

2007 ◽  
pp. 172-177 ◽  
Author(s):  
N. Chand
Keyword(s):  
Wireless Networks ◽  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Information Transfer ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Mobile Users ◽  
Mobile Hosts ◽  
Mobile Ad Hoc ◽  
Hoc Networks

Mobile wireless networks allow a more flexible communication structure than traditional networks. Wireless communication enables information transfer among a network of disconnected, and often mobile, users. Popular wireless networks such as mobile phone networks and wireless local area networks (LANs), are traditionally infrastructure based—that is, base stations (BSs), access points (APs), and servers are deployed before the network can be used. A mobile ad hoc network (MANET) consists of a group of mobile hosts that may communicate with each other without fixed wireless infrastructure. In contrast to conventional cellular systems, there is no master-slave relationship between nodes, such as base station to mobile users in ad-hoc networks. Communication between nodes can be supported by direct connection or multi-hop relays. The nodes have the responsibility of self-organizing so that the network is robust to the variations in network topology due to node mobility as well as the fluctuations of the signal quality in the wireless environment. All of these guarantee anywhere and anytime communication. Recently, mobile ad-hoc networks have been receiving increasing attention in both commercial and military applications.

Sign in / Sign up

Export Citation Format

Share Document