Influence of link sensing mechanism of IMEP on the performance of TORA under different mobility models

The performance evaluation of Mobile Ad Hoc Network (MANET) routing protocols is an important as well as open area of research worldwide. Temporally Ordered Routing Algorithm (TORA) is an adaptable and distributed MANET routing protocol which is dependent on the services of Internet MANET Encapsulation Protocol (IMEP) for its various necessary functions like link status detection. The incorrect link failure detection by IMEP leads to creation of congested network and initiation of avoidable route maintenance in TORA. Thus changes need to be introduced in the link sensing mechanism provided by IMEP to improve the detection of links in TORA. According to previously available research, if the maximum number of OBM retransmissions is increased, significant improvement in the performance of TORA is noticed. This modification has been implemented in this paper and performance of Enhanced TORA is evaluated under Random-Waypoint model, Manhattan-Grid mobility model and Random-Direction model using FTP traffic with 10 connections. The results are then compared with those of original TORA using various performance metrics like Packet Delivery Ratio, Average End to End Delay and Routing Overhead.

[1]  David B. Johnson,et al.  Routing in Ad Hoc Networks of Mobile Hosts , 1994, 1994 First Workshop on Mobile Computing Systems and Applications.

[2]  Gentian Jakllari,et al.  A Comprehensive Comparison of Routing Protocols for Large-Scale Wireless MANETs , 2006, 2006 3rd Annual IEEE Communications Society on Sensor and Ad Hoc Communications and Networks.

[3]  V. Park,et al.  An Internet MANET Encapsulation Protocol (IMEP) Specification , 1998 .

[4]  R. Dorf,et al.  The handbook of ad hoc wireless networks , 2003 .

[5]  M. S. Corson,et al.  A highly adaptive distributed routing algorithm for mobile wireless networks , 1997, Proceedings of INFOCOM '97.

[6]  Vincent Park,et al.  Temporally-Ordered Routing Algorithm (TORA) Version 1 Functional Specification , 2001 .

[7]  Prasun Sinha,et al.  Ad Hoc Routing Protocols , 2005, Handbook of Algorithms for Wireless Networking and Mobile Computing.

[8]  S. S. Dhenakaran,et al.  An Overview of Routing Protocols in Mobile Ad-Hoc Network , 2013 .

[9]  David A. Maltz,et al.  A performance comparison of multi-hop wireless ad hoc network routing protocols , 1998, MobiCom '98.

[10]  Ahmed Helmy,et al.  A SURVEY OF MOBILITY MODELS in Wireless Adhoc Networks , 2004 .

[11]  Boon-Chong Seet,et al.  The Handbook of Ad Hoc Wireless Networks , 2002 .

[12]  Radhika Ranjan Roy,et al.  Handbook of Mobile Ad Hoc Networks for Mobility Models , 2010 .

[13]  Ivan Stojmenovic,et al.  Ad hoc Networking , 2004 .

[14]  Abdelsalam Helal,et al.  CAD-HOC: a CAD-Like tool for generating mobility benchmarks in ad-hoc networks , 2002, Proceedings 2002 Symposium on Applications and the Internet (SAINT 2002).

[15]  Dimitri P. Bertsekas,et al.  Distributed Algorithms for Generating Loop-Free Routes in Networks with Frequently Changing Topology , 1981, IEEE Trans. Commun..

[16]  Ingrid Moerman,et al.  An overview of mobile ad hoc networks: applications and challenges , 2004 .

[17]  Dharma P. Agrawal,et al.  Mobile Ad hoc Networking , 2002 .

[18]  Kwan Hui Lim,et al.  An in-depth analysis of the effects of IMEP on TORA protocol , 2012, 2012 IEEE Wireless Communications and Networking Conference (WCNC).

[19]  Marco Conti,et al.  Mobile Ad-hoc Networking - Minitrack Introduction , 2001, HICSS.