ACTIVE OPNET PROJECTS

1. IMPLEMENTATION OF OPTIMAL RELAY SELECTION (ORS) TO IMPROVE THE PERFORMANCE OF OLSR

University: University of Texas at Dallas
Department: Erik Jonsson School of Engineering and Computer Science
Sponsoring Professor: Kamil Sarac                                                                               PhD Student: Mehmet Baysan

Optimized Link State Routing (OLSR) is a well defined, actively used proactive routing protocol designed for Ad Hoc networks. In OLSR some nodes are being selected to be responsible for routing called Multipoint Relays (MPRs). Efficient selection of these MPRs is an important part of the routing. We invented a new algorithm to improve the performance of MPR selection and proved that this is better compared the older one in theory. To see the impacts of using this new algorithm in practice, we are planning to make simulations using OPNET. So far we implemented the new algorithm partially and we have some preliminary results.

  These preliminary results are obtained at a scenario where 100 static nodes are placed on random points on a 10 km x 10 km area. Nodes are generating unicast traffic to other random nodes. Packet inter-arrival times and packet sizes are defined to be exponential random variables. Results are given below for the old and new versions of OLSR routing on this network. Only difference between old version and new version is the MPR selection algorithm used.

On the figures below we show the effect on just one metric namely OLSR Routing Traffic Received and its calculated with respect to average number of bits received per second. Detailed results are given in the following links.  

OLSR routing results with old method

OLSR routing results with new method

Figure-1 OLSR routing traffic received with using old MPR selection method.

Figure-2 OLSR routing traffic received with using new MPR selection method.