<p>Last decade, a lot of research has been done in wireless communication technologies. Mobile</p><p>nodes such personal digital assistants (PDAs), notebooks and cell phones are nowadays used</p><p>in human’s daily life.</p><p>MANETs are networks consisting of two or more mobile nodes equipped with wireless</p><p>communication and networking capabilities, but they don’t have any network centrilized</p><p>infrastructure.</p><p>In last few years, MANETs have been emerged to be an important researched subject in the</p><p>field of wireless networking.</p><p>MANETs are autonomous; however they can communicate with other external networks such</p><p>the internet. They are linked to such external networks by mobile nodes acting as gateways.</p><p>This kind of networks is known as hybrid MANETs.</p><p>Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using</p><p>a Internet connection instead of a regular (or analog) phone line.</p><p>The goal of this thesis is evaluate the performance of VoIP strategies for hybrid MANETs.</p><p>Two different aspects are evaluated, the session establishment performance and the voice</p><p>quality.</p><p>Network Simulator 2 is used to run several simulations, two different applications are used to</p><p>run voice simulations (Session Initiation Protocol and Exponential traffic generator). We</p><p>evaluate two different cases for voice traffics, voice calls between two MANET nodes and</p><p>voice calls between MANET nodes and external nodes.</p><p>After running the simulations, there are some performance parameters which will reveal the</p><p>results. The key findings of the simulations are: adding gateways, number of voice traffic</p><p>flows and the number of hops between source and destinations. There are some interesting</p><p>results which reveal for example, that adding gateways is not always beneficial.</p>
| Identifer | oai:union.ndltd.org:UPSALLA/oai:DiVA.org:kau-1204 |
| Date | January 2007 |
| Creators | Aguiño, Gonzalo Iglesias |
| Publisher | Karlstad University, Faculty of Economic Sciences, Communication and IT |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, text |
Page generated in 0.0025 seconds