Welcome to Nadir Bouchama's Homepage!

Mr. Nadir Bouchama

Researcher at CERIST 

UbiSyS Team, Division Théorie et Ingénierie des Systèmes Informatiques (DTISI) 

CERIST Research Center, 03 Rue des frères Aissou, Ben Aknoun, Algiers 16306, Algeria

 Email: nbouchama@cerist.dz or nadir.bouchama@gmail.com 



 "If it were not for guests all houses would be graves".  ~Gibran Khalil Gibran

Research Interests

- Quality of  Service (QoS)

- Wireless Ad hoc Networks 

- Disaster Management 

- Voice over IP

- Congestion and Flow Control

- Cross Layering in Mobile Ad Hoc Networks

- Discrete Event Simulation

- Performance Evaluation of Data Communication Systems

- Traffic Management in Smart Cities 


Master Thesis

Place: Ecole doctorale ReSYD at University of Béjaia. Algeria

Title: Congestion Control in High Speed Networks

 Abstract: In a system with resource sharing, congestion is present when the demand for resources exceeds the quantity of available resources. Unexpectedly, new broadband technologies did nothing but worsen the congestion. Consequently, it is necessary to conceive new congestion control protocols which are appropriate to the characteristics of such networks. Congestion control consists in maintaining the system in lower part of the threshold of congestion, while optimizing the use of the resources by statistical multiplexing. It is generally carried out by several preventive and reactive means. The first aim to return the appearance of this phenomenon exceptional whereas the last make it possible to return to a normal situation when, despite everything, congestion occurs. This second class of methods is very used in ATM networks in order to guarantee quality of service (QoS) of already established connections. The aim of this thesis is to make a synthesis on the methods of congestion control in high speed networks. Thereafter, we will study in a more detailed way two algorithms of control admission (CAC) like examples of preventive control in ATM networks.

Keywords: high speed networks, congestion, asynchronous transfer mode, quality of service, performance evaluation, discrete event simulation, admission control.

Software developed:  A discrete event simulator for M/D/1/k Queue in C++ Builder for ATM Networks 


Download here 


Engineer Dissertation 

Place: University of Tizi Ouzou. 

Title: A Software for Processing METEOSAT Pictures

Abstract: Satellitary Images provided by METEOSAT are not directly exploitable by the meteorologists operating in ground stations. Indeed, such images require several operations of pre-treatment such as enhancement, filtering, segmentation, and geometrical correction. In addition, numerical forecasting makes call to several mathematical models which are very complex. It is within this framework that our work is registered: it is a question of conceiving a data-processing application which makes it possible to automate certain routines of calculations and extraction of weather parameters of starting from the weather images of satellites METEOSAT in its three channels (Infra-Red IR, Water Vapour WP, and Visible VIS). These parameters include surface albedo, nebulosity, pluviometry, and insolation. Moreover, the application allows the animation of satellite images, the production of coloured images from monochromic images, the localization of a geographical site, as well as the calculation of some relevant geo-astronomical parameters.

Keywords: image processing, meteorological satellite, remote sensing, pixel, image segmentation, weather forecasting, surface albedo, filtering, geo-astronomical parameters 

Software developed:  A C++ Builder Application. Available upon Request


Teaching Activities  

- Algorithms and Data Structures (University of Bejaia)

- Theory of Automata and Compilers (University of Bejaia)

- First steps to Delphi (CFPA of Bejaia and VEGA-IP Private School)

- Programming Databases with Delphi (VEGA-IP Private School)

-  C/C++ Programming (SYKEN College)

- Office automation (VEGA-IP Private School)


Student (Co)-Supervision

1. Engineers   

  • S. Boudjellaba, Developing a Website for a Car Company with e-commerce Functionalities. University of Bejaia. September 2006.
  • M. Belgaid and S. Ouhab, Quality of Service Routing in AODV and OLSR. University of Bejaia. September 2007.
  • H. Maouchi, Delay Constrained Routing in the AODV Protocol. University of Tizi Ouzou. June 2009.
  • M. Bosli and M. Baaliouameur. Design and Implementation of QoS routing Protocols in Ad hoc Networks. University of Bab Ezzouar. October 2009.
  • M. Abdeladim and E-M. B. Louhaidia. Implementation and Performance Evaluation of a Flow Control Protocol For Mobile Ad Hoc Networks. Ecole Supérieure en Informatique (ESI). November 2009.
  • H. Merabti and M. Hellal. Study of the Impact of Multipath Routing on VoIP in Mobile Ad Hoc Networks. University of Bab Ezzouar. June 2010.

 2. Masters  

  • S. Laribi and H. Lakhdari, Design and Implementation of a New Routing Metric for Improving Quality of Service in RPL. University of Blida. Ongoing
  • Y. Daï and W. Yennoune, Securing SIP Protocol in Wireless Mesh Networks. University of Bab Ezzouar (USTHB). June 2016.
  • H. Smida, Securing Wireless Mesh Networks by using VPNs .University of Bab Ezzouar (USTHB). June 2015.
  • M. Boulouza and O. Asfirane. Experimental Evaluation of VoIP in Wireless Mesh Networks. University of Bab Ezzouar. July 2010.
  • H. Saadi. Extending the AOMDV Protocol for Satisfying VoIP Requirements in Wireless Mesh Networks. University of Bab Ezzouar. October 2012.
3. Licence
  • K. Hadj Rabah and C. Khalfi. Configuration and Securisation of WRT160NL Wireless Mesh Routers. University of Bab Ezzouar.  June 2014.
  • H. Smida. Securing VoIP in Wireless Mesh Networks. University of Bab Ezzouar. June 2013.
 4. DEUA  
  • K. Merri and R. Oukaci. Website Development under the Linux Operating System  (Quanta Plus, PHP/MySQL, Apache, Gimp). University of Bejaia.  June 2005.
  • T. Boussebissi and H. Ouanoughi. A Software for METOSAT Image Processing with Delphi. University of Bejaia. June 2005.
5. Mini-Projects
  •  O. Chergui. Multipath QoS Routing in Ad hoc NetworksEcole Supérieure en Informatique (ESI). October 2011.
  • H. Smida. Configuration of a Wireless Mesh Network using WRT54GL Routers. University of Bab Ezzouar. September 2012.


Skills in Computer Science

Operating Systems: Windows (98/2000/XP), Unix (Solaris Station), Linux (Red Hat, Mandrake, Knoppix, Ubuntu), Cygwin (Linux emulator under Windows)

Programming Languages: C/C++, Pascal, Delphi, C++ Builder, AWK, Tcl

Databases: Borland Paradox, Microsoft Acces, SQL

Web: HTML, PHP/MySQL, Apache, EasyPHP, XAMPP

Networking: TCP/IP, ATM (Asynchronous Transfer Mode), IP addressing, Routing, Cisco Simulator, Network Simulator, WireShark, Configuration of CISCO WRT54GL Mesh Routers, 802.11. Ad hoc routing protocols,  WireShark

VoIP: AsteriskNOW, Sipfone (on iPhone),  X-Lite,  Delay-constrained routing

Misc: LaTeX, Lyx, Microsoft Visio, WinDesign



  • English: Fluent 
  • French: Very good  (written and spoken)
  • Arabic: Very good  (written and spoken)
  • Kabyle (tamazight): mother tongue 



  • Litterature
  • Nature, Camping & Picnic
  • Documentaries
  • Stamp Collecting
  • Social media


Conferences and Talks

  • S. Yahiaoui, I. Benkhelifa, H. Saadi,  T. Bencherif, N. Bouchama, A, Seba, N. Nouali-Taboudjemat: ICTs Integration for Disaster Management.  First International Conference on ICTs for Disaster Management, March 24-25, 2014, Algiers (Algeria).
  • N.Bouchama, On Performance Improvement of VoIP in Ad hoc Networks.  CERIST (Centre de Recherche sur l’Information Scientifique et Technique) at Algiers. May 2013.
  • N. Bouchama, Towards a Framework for Multi-Constrained Routing in Mobile Ad hoc Networks. LAMOS (Laboratory of Modelling and Optimization of Systems) at University of Bejaia. November 2011.
  • Nadir Bouchama, Nadia Nouali, Djamil Aïssani, Natalia Djellab, Houari Maouchi, Extending the AODV Protocol to Provide Quality of Service in Mobile Ad Hoc Networks.  ICIST' 2011. 24-26 April 2011. Download article here and presentation here
  • N. Bouchama, Quality of Service in Mobile Ad hoc Networks: Issues and some Contributions. 25th Anniversary of the CERIST Conference. CERIST (Centre de Recherche sur l’Information Scientifique et Technique) at Algiers. June 2010. Download here or here.
  • N. Bouchama, Comparing Delay Constrained Routing and Multipath Routing in Ad hoc Networks. LAMOS (Laboratory of Modelling and Optimization of Systems) at University of Bejaia. March 2010. 
  • N. Bouchama, An Overview of Disaster Management Projects. Journée d'Information sur la Gestion de Catastrophes. CERIST (Centre de Recherche sur l’Information Scientifique et Technique) at Algiers. July 2009. Download here.
  • N. Nouali, N. Bouchama, A. Bendjoudi, A. Babakhouya, S.Yahiaoui, Y. Belhoul, H. Zeghilet and N. Guellati, Using Information Technology for Enhancing Disaster Management. In Congrès National des Télécommunications et leurs Applications (CNTA' 09). University of Bejaia, Algeria. May 2009. Download here and the talk (in french) here
  • N. Bouchama, Delay Constrained Routing in Ad hoc Networks. LAMOS (Laboratory of Modelling and Optimization of Systems) at University of Bejaia. March 2009. Download here
  • N. Bouchama, Quality of Service Routing in Ad hoc Networks.  CERIST (Centre de Recherche sur l’Information Scientifique et Technique) at Algiers. June 2008. Download here
  • N. Bouchama, Using VoIP in Disaster Management.  CERIST (Centre de Recherche sur l’Information Scientifique et Technique) at Algiers. May 2008.
  • N. Bouchama, Quality of Service Models in Ad hoc Networks. LAMOS (Laboratory of Modelling and Optimization of Systems) at University of Bejaia. March 2008. Download here
  • N. Bouchama, Quality of Service in Mobile Ad Hoc Networks. LAMOS (Laboratory of Modelling and Optimization of Systems) at University of Bejaia. December 2006.
  • N. Bouchama, Congestion Control in High Speed Networks. LAMOS (Laboratory of Modelling and Optimization of Systems) at University of Bejaia. May 2005. Download here
  • N. Bouchama and S. Yahiaoui, Stochastic Bounds for Performance Evaluation of Complex Systems. University of Bejaia. July 2004. Download here
  • N. Bouchama. The Consensus Problem in Distributed SystemsUniversity of Bejaia. July 2004.
  • N. Bouchama and S. Yahiaoui, Quality of Service Routing  in the Internet. University of Bejaia. June 2004. Download here
  • N. Bouchama and R. Atman, METEOSAT Image Processing for Weather Forecasting. January 2003.
Other Scientific Activities
Keywords: quality of service, QoS routing, FQMM, HQMM, AODV, OLSR, ad hoc networks, congestion, DECBit, ATM, high speed networks, smart city, bandwidth estimation,  end to end delay, networks simulator, drone, disaster management, ICTs for disaster management,  AOMDV, mesh networks, multipath routing, routage multichemin, voip, voip wireshark, voip security, gentoo, dumbo project, sahana project, eden project, open street map, performance evaluation, queuing sustems, M/G/1/K, N.D.D/1/K, markovian model, traffic management, routing, source routing, RPL, internet of things, cooja/contiki, load balancing, projets PNR, gestion de catastrophes, trafic routier, contrôle de congestion, gestion intelligente du traffic, ushahidi, osm, mac layer delay estimation, 802.11, 802.11e,  Collectview, SIP security, pfSence, IntSev, DiffServ, ciscco wireless router, wrt, wrt54GL, Orsec, Orsec Algérie, opensource platform, AODV-D, Loadng, contiki opeating system, Delphi, borland c+, teaching, research, algorithms, X-lite, sipfone, LaTeX, LyX, discrete event simualtion, nsnam, tcl, tcl scipt, manet, mobile ad hoc networks, IETF, IEEE, smart mobility, iot routing, iot rpl, RPL extension, QoS in RPL, e2e delay RPL, load balancing rpl, rerouting in smart city, incident detection, congestion impact in smart cities, smart city Algeria, coordination in smart cities, bigdata smartcity, big data in smartcity. linear regression, machine learning traffic management, computational intelligence.