Informatics Publishing Limited

S. S. Manvi ¹, M. S. Kakkasageri ², Savitha Paliwal ³, Rekha Patil ⁴

Affiliations
1 Dept. of Electronics & Communication Engineering, REVA Institute of Technology and Management, Bangalore, IN
2 Dept. of Electronics & Communication Engineering, Basaveshwar Engineering College, Bagalkot, IN
3 Dept. of Computer Science and Engineering, Walchand Institute of Technology, Solapur, IN
4 Dept. of Computer Science and Engineering, P.D.A. College of Engineering, Gulburga, IN

Abstract

Mobile Ad hoc Network (MANET) is a self organized network where network is set up on the fly. Some of the issues in MANETs are routing, security, power management, bandwidth management, mobility management, etc. Zone Routing Protocol (ZRP) provides a flexible solution for discovering and maintaining routes in MANETs. This paper addresses the problem of routing by considering link stability (link expiry time) and node mobility. Link instability and node mobility causes frequent topology changes that result in routing complexity. The proposed Zone and Link Expiry based Routing Protocol (ZLERP) for MANETs is an enhancement to existing ZRP that offers better routing services. An attempt is made to limit control overheads in the network by selecting the path with stable links between two nodes. Nodes measure link stability using the received signal strengths from neighboring nodes at periodic time intervals. The proposed routing protocol is simulated in several network scenarios to test its operation effectiveness. It is observed that modified ZRP performs better than existing ZRP.

Keywords

MANET, ZRP, Routing, Link Expiry, ZLERP.

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Rashmi K H ¹, Rekha Patil ²

Affiliations
1 Department of Information Science and Technology, Faculty of Engineering and Technology, Sharnbasva University, Kalaburagi, Karnataka,, IN
2 Department of Computer Science and Engineering, Poojya Doddappa Appa College of Engineering, Kalaburagi, Karnataka,, IN

Abstract

In recent years, wireless communication networks have been developing rapidly, which causes many challenges to be faced in vehicular ad hoc networks (VANETs). Congestion is a degradation of the quality of service in which messages begin to be delivered less often to the recipient. So, in this paper, to optimize the energy efficiency of network cross layer based clustering protocol is presented. For clustering, Reputation based Weighted Clustering Protocol (RBWCP) is presented. To enhance the clustering performance of RBWCP, clustering parameters of the protocol are optimally chosen using Mexican Axolotl Algorithm (MAA). In this work, cluster head is selected in every cluster using the weight vehicle’s reputation such as speed, direction and position. After the formation of cluster, mean value of vehicle density (MVVD) threshold is estimated depend on the received signal strength of the vehicles. This threshold value is compared with the density of each vehicle inside the cluster. If the density of the vehicle is greater than the threshold, then the cluster is divided into sub-clusters. It leads to control the congestion in the network. The execution of the proposed model is calculated in terms of cluster lifetime, delivery ratio, delay, overhead and throughput..

Keywords

VANET, Congestion, Mexican Axolotl Algorithm, Energy-Efficient Clustering Algorithm, Vehicle Density, MVVD Threshold.

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