Loay Abusalah, Ph.D.

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Undergraduate Research


Current Projects

  • Security and performance issues in MANETs

Currently, due to the dynamic nature of MANET, it has various existing security issues. Also, flaws have been found with existing security measures. MANET, being essentially a decentralized ( there is not one set router—any node can take this role), dynamic (nodes are very mobile, as an example) , increasingly mobile ( it has more users with increasing demands)  entity needs equally adaptive, as well as scalable,  security measures. All of these problems in MANETs have sprung up as a popular topic for people such as IETF members to explore and comment on, whose solutions are summarized herein.

  • The Generations of Cellular Technology

The speed at which the past three generations of cellular technology came predicts how the next will come.  Among the many benefits that have been introduced with each coming generation, there have also been failures and inadequacies.  By analyzing previous technologies and preparing for the upcoming technologies, we may be able to find better solutions to existing problems with the fourth generation technology.

  • Distributing Multimedia in Today’s Internet

Multimedia has become a big part of the internet today.  Everyone is using some form of multimedia in one way or another.  The internet today would not be the same without it.  YouTube and Hulu are popular multimedia sites for videos.  Multimedia is fairly new, but is already very popular and is being accessed in more and more ways.  Multimedia requires a lot of bandwidth to function properly.  To keep up with the growing demand, new methods and protocols need to be developed to be able to enhance the multimedia experience even more.  In this paper, multimedia is discussed, along with the challenges, possible solutions, and problems with the solutions.

  • Securing Emails
  • A Look into EVDO and HSDPA

This paper will discuss the two main wireless technologies currently used in the United States. These technologies are Evolution-Data Optimized (EVDO) and High speed Downlink Packet Access (HSDPA). I will give a brief overview of each technology and discuss their history and how exactly these technologies work. After that I will talk about the challenges that each technology faces moving forward and lastly I will propose a solution that I think will solve the problems and and improve on these two technologies.

  • Web Security
  • Mobility Management: An Analysis of Cellular Networks

This work will focus on mobility and the problems it presents within modern cellular architecture. Some of the problems addressed within this article include: locating a mobile user within the network, routing voice and data channels to the user, and performing “handoffs” on a mobile user who dynamically changes their point of attachment from one network to another. It was found that these mobility services must address many challenges in regards to a user who is mobile and that the current technologies which are used to solve these problems each have their respective drawbacks. By using the Global System for Mobile Communications (GSM) and 3GSM/CDMA 2000 (CDMA) networks as a case study, the reader will be able to see how the aforementioned mobility services are implemented in their respective networks, along with the previously mentioned challenges and drawbacks.  While the current GSM and CDMA networks are considered suitable technologies for modern cellular architecture, this work will conclude with a new proposed cellular mobility technology, consisting of a combination of the aforementioned GSM and CDMA technologies, along with the addition of current Mobile IP technology.

  • Introduction for Running Integrated Services over a Differentiated Service Network Core

Internet applications during the 1990s were mostly elastic and could tolerate losses and delays.  Today, applications are growingly inelastic and have a need to be delivered in real time.  Such applications include VOIP (Voice Over IP), video conferencing, and control software.  To accommodate these applications, the IETF (Internet Engineering Task Force) has come up with Integrates Services (IntServ) and Differentiated Services (DiffServ) in order to provide Quality of Service (QoS) to those who need it.  However, both of these services have their downfalls.  IntServ has very poor scalability for the large core networks of today, while DiffServ does not provide guaranteed QoS.  The objective of this paper is to give an introduction to the use of a combination of an Integrated Service and a Differentiated Service in order to provide guaranteed QoS that is scalable.

  • Securing TCP Connections: SSL

Secure Sockets Layer, it is a protocol made by Netscape for transferring files safely over the Internet. SSL uses a cryptographic system that uses two keys to encrypt data − a public key that everyone knows and a private key that only the receiver/client knows.  Both Netscape Navigator and Internet Explorer support SSL, and many Web sites use the protocol to obtain confidential user information but connections are not guaranteed secured.

  • Real Time Streaming Protocol

Before the ability to stream media on the internet a user was required to download the entire file. This caused long delays before any user could actually view media, and made it impossible to preview the content unless a separate preview file was offered. The solution to this problem was to stream the media from a server instead of downloading the source file via HTTP or FTP. In order to implement this, RTSP was created which allowed a user to stream media from a server.

Past Projects

  • Information will be posted soon

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