Posts Tagged ‘ad hoc’

Implementasi dan Analisis Kualitas Layanan VoIP Pada Jaringan Ad hoc Peer-to-Peer

April 15, 2012

Tri Angga Bagus Susanto1, Abdusy Syarif2, Abdi Wahab3

ABSTRAKS
Teknologi VoIP (Voice over Internet Protocol) adalah sebuah teknologi komunikasi data yang sangat memungkinkan percakapan suara dengan memanfaatkan media jaringan komputer atau jaringan paket Internet Protocol (IP). Pada umumnya, implementasi VoIP menggunakan jaringan Local Area Network (LAN) atau Wireless Local Area Network (WLAN) atau juga Intranet / Internet. Singkatnya, dibutuhkan sebuah infrastruktur untuk dapat mengimplementasikan VoIP. Namun pada penelitian ini akan digunakan jaringan ad hoc peer-to-peer dan akan dilakukan pengukuran serta analisis terhadap kualitas layanan VoIP. Jaringan Ad hoc peer-to-peer adalah sebuah metode yang memungkinkan bagi perangkat keras nirkabel untuk berkomunikasi secara langsung dengan yang lainnya tanpa ketersediaan infrastruktur jaringan. Dalam skenario pengujian digunakan beberapa perangkat keras (seperti laptop, komputer dan telepon seluler), sistem operasi (Windows, Linux Ubuntu, dan Android) dan perangkat lunak softphone yang berbeda (seperti 3Cxphone, Ekiga, Qutecom, Sjphone, X-lite). Dari hasil penelitian dapat dilihat bahwa teknologi VoIP dapat diimplementasikan walaupun tanpa dukungan infrastruktur, yaitu dengan memanfaatkan jaringan Ad Hoc peer-to-peer. Dari hasil pengukuran dan analisa beberapa parameter yang diamati, didapatkan hasil untuk rata-rata delay adalah sebesar 20,54 millidetik, dan throughput sebesar 0,081 Mega Byte/detik, sedangkan banyaknya paket per-detik adalah 94,3842 paket.

Kata Kunci: voip, ad hoc, peer-to-peer

Insya’Allah paper ini akan dipresentasikan pada Seminat Nasional SNATI 2012 di UII-Yogyakarta pada tanggal 15-16 Juni 2012. 

Introduction to Wireless Sensor Networks

February 25, 2012

A wireless sensor network is a collection of nodes organized into a cooperative network [10]. Each node consists of processing capability (one or more microcontrollers, CPUs or DSP chips), may contain multiple types of memory (program, data and flash memories), have a RF transceiver (usually with a single omni-directional antenna), have a power source (e.g., batteries and solar cells), and accommodate various sensors and actuators. The nodes communicate wirelessly and often self-organize after being deployed in an ad hoc fashion. Systems of 1000s or even 10,000 nodes are anticipated. Such systems can  evolutionize the way we live and work.

Currently, wireless sensor networks are beginning to be deployed at an  ccelerated pace. It is not unreasonable to expect that in 10-15 years that the world will be covered with wireless sensor networks with access to them via the Internet. This can be considered as the Internet becoming a physical network. This new technology is exciting with unlimited potential for numerous application areas including environmental, medical, military, transportation, entertainment, crisis management, homeland defense, and smart spaces.

Since a wireless sensor network is a distributed real-time system a natural question is how many solutions from distributed and real-time systems can be used in these new systems? Unfortunately, very little prior work can be applied and new solutions are necessary in all areas of the system. The main reason is that the set of assumptions underlying previous work has changed dramatically. Most past distributed systems research has assumed that the systems are wired, have unlimited power, are not real-time, have user interfaces such as screens and mice, have a fixed set of resources, treat each node in the system as very important and are location independent. In contrast, for wireless sensor networks, the systems are wireless, have scarce power, are real-time, utilize sensors and actuators as interfaces, have dynamically changing sets of resources, aggregate behavior is important and location is critical. Many wireless sensor networks also utilize minimal capacity devices which places a further strain on the ability to use past solutions.

Our Draft Paper For International Journal Computer Science and Engineering (IJCSE)

June 19, 2011

Performance Analysis of AODV-UI Routing Protocol With Energy Consumption Improvement Under Mobility Models in Hybrid Ad hoc Network

Abstract

In mobile ad hoc networks (MANETs), routing protocol plays the most important role. In the last decade, Ad hoc On-demand Distance Vector (AODV) routing protocol becomes the attention of focussed research on MANETs world wide. A lot of protocols had been proposed to improve and optimize AODV routing protocol to achieve the best in quest of reliable protocol. In this paper, we present some improvement suggestion to AODV routing protocol. Our proposed protocol, called AODV-UI, improved AODV in gateway interconnection, reverse route and in energy consumption. We also measure performance indicators for some metrics, such as energy, routing overhead, end-to-end delay, and packet delivery ratio. We performed our simulation scenarios with three mobility model with different maximum speed and sources in hybrid ad hoc network. The result shows that AODV-UI is more stable when it is used in random way point mobility model in any speed and number of sources.

AODV; routing protocol; energy consumption; hybrid ad hoc network; MANETs

You can download this paper here.



TCL Script for AODV-UU in Ad hoc Hybrid Network

March 27, 2011

Here is my TCL script to running AODV-UU in ad hoc hybrid network scenario using NS-2.34 and AODV-UU-0.9.6. (more…)

Patching AODV-UU-0.9.6 Into NS-2.34

February 3, 2011

Since the latest aodv-uu version (aodv-uu-0.9.6) only support till ns-2.32, I have to make my own patch aodv-uu-0.9.6 for ns-2.34.

1. Installing NS-2.34
This is my experience when I was installing ns-2.34 on Ubuntu 10.4. Make sure that before you perform installation, the following packages installed:

 ~$ sudo apt-get install libxt-dev libx11-dev libxmu-dev

I noticed that ns-2.34 did not build on the new version Ubuntu such as 9.10 – 10.10, due to this error when linking:
(more…)

AODV-UI

January 30, 2011

For my reseach project this semester, I tried to combine 2 protocols, AODV+ and R-AODV in NS-2.34. We called it AODV-UI. My goals is to combine gateway mode and reverse mode in route discovery mechanisme, so we’ve got a new variant AODV. Here the source code of AODV-UI. FYI, this aodv routing protocol is still in developing. And we’re working on it.

TCL Script for My NS-2 Project

January 19, 2011

This is my simple tcl script for our project research by using NS-2.34. In this project, we are going to combine 2 protocols, AODV+ and R-AODV,  our proposed protocol called AODV-UI.

Here is the tcl script.

(more…)