Mitigation for Jelly Fish Attack on MANET

Vol. 2  Issue 4
Year: 2016
Issue:Nov-Jan
Title:Mitigation for Jelly Fish Attack on MANET
Author Name:Shweta Shah, Madhu Sharma and Ashish Jain
Synopsis:
Mobile Adhoc Networks have become a part and parcel of technology advancements due to its extraordinary technique. Open communication feature make it prone for various security threats. Subsequently, there are many security threats like DDOS, Wormhole, Black hole etc., which not only affect the network performance but also responsible for the leakage of sensitivity of information. Jelly-Fish attack is one of the routing disruption attack which lies in the series of wormhole and black hole attack at network layer. It attempts to compromise the network packet and store them for a period of time. It may try to introduce delay or partial capturing of packets during communication. Due to big impact of jellyfish attack, it has gained a big name in recently and most wide area for researchers. Jellyfish Attack exploits the end-to-end communication and creates congestion in transmission protocols. Arbitrary network failure or node failure is the natural phenomena and may vary as per real life deployment, but intentional failure or compromising network may lead to information leakage. Security in mobile networks is a challenging task. The complete study observes that the security threats not only capture the packets but also degrades the network performance. To overcome vulnerability problems, this work considers jellyfish attack as the study target and will derive a mechanism to identify and prevent mobile networks from security threats.

Smart Antennas for Interference Rejection in Mobile Communications

Vol. 2  Issue 4
Year: 2016
Issue:Nov-Jan
Title:Smart Antennas for Interference Rejection in Mobile Communications
Author Name:Veerendra, Md. Bakhar and Vani R.M.  
Synopsis:
In this paper, the authors have devised a new robust beam forming algorithm called Variable Step Size Normalized Least Mean Square (VSSNLMS) for smart antenna systems. Firstly, the performance of Least Mean Square (LMS) and Normalized Least Mean Square (NLMS) algorithms are analyzed with respect to the convergence speed and interference suppression capability. It is found that, both the methods use fixed step size. As a result of this, they show low convergence rate. Hence these algorithms cannot track the desired signal properly in an environment, where the signal characteristics are changing rapidly. The proposed VSSNLMS algorithm uses a variable step size. This improves the convergence rate and produces deep nulls in the direction of interferences which improves the interference suppression. Hence the proposed method is robust and better than the normal LMS and NLMS algorithms and can be used effectively in advanced mobile communication applications.

Improving Routing Mechanism in MANETs using Discovery Routing Protocols

Vol. 2  Issue 4
Year: 2016
Issue:Nov-Jan
Title:Improving Routing Mechanism in MANETs using Discovery Routing Protocols
Author Name:D. Ganesh and K. Arunachalam 
Synopsis:
Nowadays MANETs have obtained a sensible interest due to the growing number of wireless device users. Hence, Mobile Ad-Hoc Networks are used in real time applications, and these real time programs need QoS assurance in terms of throughput and delay. Hence, it assets the QoS in MANETs. The main problem is the communication which is more a shared standard in a particular channel. In this work, the authors suggest an Achievable Throughput based Admission Control Protocol (ATACP) for controlling a channel from becoming overloaded, thereby making sure an assured throughput for real time traffic. Achievable Throughput based Admission Control Protocol works on a cross layer structural design that encompass the network and the MAC Layer and the admission control is carried in each node during the path discovery. The node broadcasts the route request to its neighbors providing its achievable throughput that satisfies the desired throughput considering the contention count. The performance of the ACP maintains the ineffective overhead throughput and End-to-End Delay MANETs. This work proposes the improving routing mechanism in MANETs using discovery routing protocols to achieve the effectiveness of throughput and less end-to-end delay over Mobile Ad-hoc Network.

A Routing Algorithm in MANET - A Survey

Vol. 2  Issue 3
Year: 2015
Issue:Aug-Oct
Title:A Routing Algorithm in MANET - A Survey
Author Name:R. Madhumitha and A. Subramani
Synopsis:

Mobile Ad-hoc Network (MANET) is most often a cluster of wireless mobile nodes dynamically establishing a brief live network without the use of network infrastructure. MANET is associated with the rising space of analysis in the communication network world. The change in network topology due to node movement associated with the link failure and creation, source in radio resources and bandwidth, limited battery power and computing capability pose challenges in packet routing in MANET. Energy efficiency is the most important design consideration in MANETs, due to the limited battery life of mobile terminals. The network lifetime will improve suitability, reducing the requirement power of connections. A number of Routing protocols have been proposed in the recent scenario. There are many advantages and disadvantages in those algorithms. This paper is a survey of the new and improved energy based routing methods in Mobile Adhoc Networks.

Providing Security to the Neighbouring Nodes in the Data Link Layer using Pseudo Random with RSA Algorithm

Vol. 2  Issue 3
Year: 2015
Issue:Aug-Oct
Title:Providing Security to the Neighbouring Nodes in the Data Link Layer using Pseudo Random with RSA Algorithm
Author Name:N. Poornima and M. Ganesh Karthik
Synopsis:

Mobile adhoc networks are a gathering of mobile nodes that communicate through a wireless channel without any unchanging infrastructure such as an access point or a mobile base station. In this network, every node transmits data from the forwarding packets to its neighboring nodes. Some nodes may not participate in forwarding the packets for the reduction in its resources. The presence of selfish behavior among the nodes may lead to network partition and makes a major harmful impact in the network operation. To avoid such conditions, selfish node inference is essential. To overcome this problem some techniques like, a credit based technique, reputation based technique, Record and Trust Based Detection techniques (RTBD) and so on, have been used. The proposed model provides security to the neighbor nodes by using pseudo random number generation using RSA algorithm, to avoid the neighboring node from being compromised by the selfish node. It significantly improves the performance metrics such as, packet delivery ratio, energy, and routing overhead.

An Improved Ad-Hoc Routing Protocol for MANETs using Swarm Intelligence Technique

Vol. 2  Issue 3
Year: 2015
Issue:Aug-Oct
Title:An Improved Ad-Hoc Routing Protocol for MANETs using Swarm Intelligence Technique
Author Name:P. Sarika and V. V. Rama Prasad 
Synopsis:

Mobile ad-hoc networks (MANET) are formed by a group of mobile nodes and does not have any fixed infrastructure. Due to the node mobility nature in MANETs, different routing challenges such as, power constraints, link failures, and path breakages occur. Many routing protocols both proactive and reactive have been implemented to solve the routing challenges, but these protocols cannot defeat these issues in a complete manner. Researchers made an attempt to research on swarm intelligence based nature inspired algorithms to defeat the routing problems faced by the mobile ad-hoc networks. In the existing approach, BAT optimization which is a swarm intelligence technique was used to find the best path for Ad-hoc On-demand Multipath Distance Vector (AOMDV) protocol based on link availability and neighbour node queuing delay. But, this approach does not maintain a balanced control packet overhead. So, in this paper Bee Inspired routing Protocol (BeeIP) is proposed to provide multipath routing for mobile ad-hoc networks. BeeIP is a swarm intelligence based routing technique, which uses the honey bee forager behavior. Simulation results show that, the proposed approach BeeIP outperforms the BAT-AOMDV in terms of network performance metrics such as, packet delivery ratio, control overhead, average end to end delay.

Dynamic Mobility Management Scheme for Inter Handoff in Hybrid Wireless Mesh Networks

Vol. 2  Issue 3
Year: 2015
Issue:Aug-Oct
Title:Dynamic Mobility Management Scheme for Inter Handoff in Hybrid Wireless Mesh Networks
Author Name:Narayana Rao, Subba Rao CH.D.V.
Synopsis:

This paper has been withdrawn by the author