scholarly journals Dynamic Detection of Secure Routes in Ad hoc Networks

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Niloofar Movahedian Attar
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
Network Performance ◽  
Ad Hoc ◽  
Malicious Nodes ◽  
Data Packets ◽  
Proposed Model ◽  
Distance Vector ◽  
Hoc Networks ◽  
The Impact

The present paper focused on ad hoc networks with an emphasis on their dynamic nature. After an introduction to ad hoc networks, there are the AODV (Ad hoc On-demand Distance Vector) routing protocol with the node malicious behaviour and consequent damages to ad hoc networks. Then, trust is described as one of the solutions for identifying secure routes when there are malicious nodes in the network. Accordingly, the paper focuses on the proposed solutions that are based on the parameter trust and the prevention of the impact of malicious networks and vulnerable connections to identify a secure route. Then, an equation is presented to calculate trust using packet forwarding rate to select a secure route for sending data packets. The proposed model was implemented on OMNET++ to evaluate the network performance. The feature of the proposed method is better performance than of the methods TVAODV and AODV. Using the proposed method, packet delivery rate increases more significantly when malicious nodes increases than that of the basic method AODV and TVAODV. There is thus a lower packet dropping rate.

scholarly journals Trust Based Multipath QoS Routing Protocol for Mission-Critical Data Transmission in Tactical Ad-Hoc Networks

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3330
Author(s):  
DooHo Keum ◽  
Jihun Lim ◽  
Young-Bae Ko
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
Network Performance ◽  
Ad Hoc ◽  
Qos Routing ◽  
Malicious Nodes ◽  
Critical Data ◽  
Mission Critical ◽  
Hoc Networks

In tactical ad-hoc networks, the importance of various tactical sensors and mission-critical data is increasing owing to their role in determining a tactical situation and ensuring the viability of soldiers. In particular, the reliability of mission-critical data has to be ensured for accurate situation determination and decision making. However, managing the network and trustworthiness in an environment where malicious nodes exist and a large amount of mission-critical data occur is a challenging issue. To solve these issues, a routing protocol is needed that can effectively detect malicious nodes and ensure the reliability and quality of service (QoS) of mission-critical data. In this paper, we propose a trust-based multipath QoS routing protocol (called MC_TQR) for tactical ad-hoc networks that can detect malicious nodes and satisfy the requirements of mission-critical data. The proposed scheme is verified using an OPNET simulator, and the results confirm the improved network performance when compared with existing schemes.

A Probabilistic Routing Protocol in VANET

2010 ◽  
Vol 2 (4) ◽  
pp. 21-37 ◽  
Author(s):  
Gongjun Yan ◽  
Stephan Olariu ◽  
Shaharuddin Salleh
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
High Speed ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Probability Model ◽  
Proposed Model ◽  
Probabilistic Routing ◽  
Hoc Networks ◽  
Manet Networks

The key attribute that distinguishes Vehicular Ad hoc Networks (VANET) from Mobile Ad hoc Networks (MANET) is scale. While MANET networks involve up to one hundred nodes and are short lived, being deployed in support of special-purpose operations, VANET networks involve millions of vehicles on thousands of kilometers of highways and city streets. Being mission-driven, MANET mobility is inherently limited by the application at hand. In most MANET applications, mobility occurs at low speed. By contrast, VANET networks involve vehicles that move at high speed, often well beyond what is reasonable or legally stipulated. Given the scale of its mobility and number of actors involved, the topology of VANET is changing constantly and, as a result, both individual links and routing paths are inherently unstable. Motivated by this latter truism, the authors propose a probability model for link duration based on realistic vehicular dynamics and radio propagation assumptions. The paper illustrates how the proposed model can be incorporated in a routing protocol, which results in paths that are easier to construct and maintain. Extensive simulation results confirm that this probabilistic routing protocol results in more easily maintainable paths.

scholarly journals Performance evaluation of MANET routing protocols based on QoS and energy parameters

2020 ◽  
Vol 10 (4) ◽  
pp. 3635
Author(s):  
Salma S. Mohamed ◽  
Abdel-Fatah I. Abdel-Fatah ◽  
Mohamed A. Mohamed
Keyword(s):  
Performance Evaluation ◽  
Routing Protocol ◽  
Routing Protocols ◽  
Network Performance ◽  
Ad Hoc ◽  
Mobile Ad Hoc Network ◽  
Energy Utilization ◽  
Delivery Ratio ◽  
Distance Vector ◽  
The Impact

Routing selection and supporting Quality of Service (QoS) are fundamental problems in Mobile Ad Hoc Network (MANET). Many different protocols have been proposed in the literature and some performance simulations are made to address this challenging task. This paper discusses the performance evaluation and comparison of two typical routing protocols; Ad Hoc On-Demand Distance Vector (AODV) and Destination-Sequenced Distance-Vector (DSDV) based on measuring the power consumption in network with varing of the QoS parameters. In this paper, we have studied and analyzed the impact of variations in QoS parameter combined with the choice of routing protocol, on network performance. The network performance is measured in terms of average throughput, packet delivery ratio (PDR), average jitter and energy consumption. The simulations are carried out in NS-3. The simulation results show that DSDV and AODV routing protocols are less energy efficient. The main aim of this paper is to highlight the directions for the future design of routing protocol which would be better than the existing ones in terms of energy utilization and delivery ratio.

A fuzzy trust-based routing model for mitigating the misbehaving nodes in mobile ad hoc networks

2018 ◽  
Vol 11 (2) ◽  
pp. 309-340 ◽  
Author(s):  
Abdesselem Beghriche ◽  
Azeddine Bilami
Keyword(s):  
Ad Hoc Networks ◽  
Mobile Ad Hoc Networks ◽  
Fuzzy Sets ◽  
Ad Hoc ◽  
Malicious Nodes ◽  
Content Type ◽  
Trust Level ◽  
Proposed Model ◽  
Mobile Ad Hoc ◽  
Hoc Networks

PurposeSecurity is one of the major challenges in the design and implementation of protocols for mobile ad hoc networks (MANETs). In such systems, the cooperation between nodes is one of the important principles being followed in the current research works to formulate various security protocols. Many existing works assume that mobile nodes will follow prescribed protocols without deviation. However, this is not always the case, because these networks are subjected to a variety of malicious attacks. Since there are various models of attack, trust routing scheme can guarantee security and trust of the network. The purpose of this paper is to propose a novel trusted routing model for mitigating attacks in MANETs.Design/methodology/approachThe proposed model incorporates the concept of trust into the MANETs and applies grey relational analysis theory combined with fuzzy sets to calculate a node’s trust level based on observations from neighbour nodes’ trust level, these trust levels are then used in the routing decision-making process.FindingsIn order to prove the applicability of the proposed solution, extensive experiments were conducted to evaluate the efficiency of the proposed model, aiming at improving the network interaction quality, malicious node mitigation and enhancements of the system’s security.Originality/valueThe proposed solution in this paper is a new approach combining the fundamental basics of fuzzy sets with the grey theory, where establishment of trust relationships among participating nodes is critical in order to enable collaborative optimisation of system metrics. Experimental results indicate that the proposed method is useful for reducing the effects of malicious nodes and for the enhancements of system’s security.

scholarly journals A Packet Size Based Intelligent Model for AODV in MANET

2020 ◽  
Vol 9 (3) ◽  
pp. 2070-2079
Keyword(s):  
Mobile Ad Hoc Networks ◽  
Routing Protocol ◽  
Ad Hoc ◽  
Packet Size ◽  
Data Packets ◽  
Proposed Model ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
Intelligent Model ◽  
Aodv Routing Protocol

Mobile ad-hoc networks are the networks that are established easily in a short span time period. But, at the same time, some challenges are also there for establishment and performance perspectives. Higher mobility of nodes creates a problem in secure and accurate data transmission. Packet size decision is to be taken for optimizing the data packets transmission from source to destination. In this paper, to decide the packet size, an ANFIS based intelligent model has been proposed. Model has been implemented at MAT Lab with generalized bell-shaped membership functions for four inputs. For this, throughput, normalized routing load, data packets received, average end to end delay metrics have been considered. Designed model has been verified with the help of network simulator-2. Proposed model will be applied for AODV routing protocol in mobile ad-hoc networks. Proposed model will enhance the performance of AODV routing protocol.

A Probabilistic Routing Protocol in VANET

2012 ◽  
pp. 19-34
Author(s):  
Gongjun Yan ◽  
Stephan Olariu ◽  
Shaharuddin Salleh
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
High Speed ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Probability Model ◽  
Proposed Model ◽  
Probabilistic Routing ◽  
Hoc Networks ◽  
Link Duration

The key attribute that distinguishes Vehicular Ad hoc Networks (VANET) from Mobile Ad hoc Networks (MANET) is scale. While MANET networks involve up to one hundred nodes and are short lived, being deployed in support of special-purpose operations, VANET networks involve millions of vehicles on thousands of kilometers of highways and city streets. Being mission-driven, MANET mobility is inherently limited by the application at hand. In most MANET applications, mobility occurs at low speed. By contrast, VANET networks involve vehicles that move at high speed, often well beyond what is reasonable or legally stipulated. Given the scale of its mobility and number of actors involved, the topology of VANET is changing constantly and, as a result, both individual links and routing paths are inherently unstable. Motivated by this latter truism, the authors propose a probability model for link duration based on realistic vehicular dynamics and radio propagation assumptions. The paper illustrates how the proposed model can be incorporated in a routing protocol, which results in paths that are easier to construct and maintain. Extensive simulation results confirm that this probabilistic routing protocol results in more easily maintainable paths.

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