Course Involvment

• Performance modelling and Simulation (Spring 08, Spring 09, Lecturer)
• Data Communications II (Spring 00, Spring 01, Autumn 01, Spring 03, Spring 04, Spring 05, Spring 06, Spring 07, Lecturer)
• Data Communications I (Autumn 99, Autumn 00, Autumn 01, Autumn 02, Autumn 03, Autumn 04, Lecturer)
• Data Communication for Multimedia Designers (Spring 99, Lecturer)
• Database systems (Spring 99, Teaching Assistant)
• Hardware level programming in C++ (Autumn 98, Teaching Assistant)
• Introductory Linux / NT / Word / Excel course (Autumn 98, Course responsible)

Research Interests

• Network Emulation
  
• Flexible Transport Protocols and SCTP, especially in a wireless environment
  
• Efficient searching in media data
• Multimedia Coding, Recoding & Transcoding

Research Activities

• Designing and implementing the KauNet network emulation system.
• The NPBox programmable, in-kernel, network emulator
• Examining TCP/SCTP performance in various settings
• Devising efficient media search algorithms

Contacting Me

Some publications

• Garcia, J. , Hurtig, P. and Brunstrom, A.
  KauNet: A Versatile and Flexible Emulation System.
  In Proceedings Swedish National Computer Networking Workshop (SNCNW2008),
  Karlskrona, Sweden, April 2008
  
  
• Gineste, M. and Garcia, J.
  Programmable active emulation of wireless systems - A DVB-RCS Example.
  In Proceedings The 4th International workshop on Wireless Network Measurements (WiNMee 08),
  Berlin, Germany, March 2008
  
  
• Garcia, J. , Conchon, E. , Perennou, T. and Brunstrom, A.
  KauNet: Improving Reproducibility for Wireless and Mobile Research.
  In MobiEval Workshop at ACM MobiSys 2007,
  San Juan, Puerto Rico, June 2007

• Garcia, J. , Hurtig, P. and Brunstrom, A.
  The Effect of Packet Loss on the Response Times of Web Services.
  In Proceedings 3rd International Conference on Web Information Systems and Technologies (WebIST2007),
  Barcelona, Spain, March 2007

• Conchon, E. , Garcia, J. , Perennou, T. and Diaz, M.
  Improved IP-level Emulation for Mobile and Wireless Systems.
  In Proceedings IEEE Wireless Communications and Networking Conference (WCNC07),
  Hong Kong, China, March 2007

• Hurtig, P. , Garcia, J. and Brunstrom, A.
  Loss Recovery in Short TCP/SCTP Flows.
  Karlstad University Studies 2006:71. , December 2006

• J.Garcia, S.Alfredsson, A. Brunstrom.
  The Impact of Loss Generation on Emulation-Based Protocol Evaluation.
  Proceedings International Conference on Parallel and Distributed Computing and Networks (PDCN 2006)
  Innsbruck, Austria, February 2006.
  

• J. Garcia and A. Brunstrom.
  Evaluation of Transport Layer Loss Notification in Wireless Environments.
  Proceedings International Conference on Networking (ICN2005),
  Boucan Canot, France, April 2005. LNCS, Springer-Verlag, Berlin
  

• J. Garcia and A. Brunstrom.
Issues with TCP-Friendly Rate Control in DCCP.
Proceedings Second Swedish National Computer Networking Workshop (SNCNW 2004),
Karlstad, Sweden, November 2004.


• J. Garcia and A. Brunstrom.
An Experimental Study on the Performance and Fairness of Loss Differentiation for TCP.
Proceedings International Conference on E-Business and Telecommunication Networks (ICETE 2004),
Setubal, Portugal, August 2004.

• K-J Grinnemo, J. Garcia and A. Brunstrom.
Taxonomy and Survey of Retransmission Based Partially Reliable Transport Protocols.
Computer Communications. Elsevier. 2004. Vol. 27. Issue 15. pp. 1441-1452.

• Garcia, J., Brunstrom, A.
  Transcoding of Image Data,
  Chapter in Perspectives of Multimedia: Communication, Media and Information Technology,
  Burnett , Brunstöm, Pettersson, (eds), Wiley, 2004,

• Garcia, J., Brunstrom, A.
Transport Layer Loss Differentiation and Loss Notification
Proceedings of First Swedish National Computer Networking Workshop (SNCNW),
Arladastad, September 2003

• Garcia, J., Brunstrom, A.
Checksum-based Loss Differentiation,
Proceedings 4th IEEE Conference on Mobile and Wireless Communications Networks (MWCN 2002),
Stockholm, Sweden, September 2002
 

• Garcia, J., Brunstrom, A.
An Experimental Performance Evaluation of a Partially Reliable Web Application,
Proceedings International Network Conference  (INC 2002),
Plymouth, Great Britain, July 2002
 

• Wennström, A., Brunstrom, A., Garcia, J., Gustafsson, J.
A GSM/GPRS Testbed for TCP Performance Evaluation,
Proceedings of International Workshop on Wired/Wireless Internet Communications (WWIC 2002)
Las Vegas, USA, June, 2002


• Wennström, A., Garcia, J., Gustafsson, J., Brunstrom, A.
TCP and GSM Link Layer Interactions: Implications for the Wireless Internet,
Proceedings of IEEE VTC Spring 2001
Rhodes, Greece, May, 2001


• Garcia, J., Brunstrom, A.
Progressive Parsing Transcoding of JPEG Images,
Proceedings 7th Intl. Workshop on Mobile Multimedia Communications (MoMuC2000),
Tokyo, Japan, October 2000


• Asplund, K., Garcia, J., Brunstrom, A., Schneyer, S.
Decreasing Transfer Delay Through Partial Reliability,
Proceedings Protocols for Multimedia Systems (PROMS 2000),
Cracow, Poland, October 2000


• Garcia, J., Brunstrom, A.
A Robust JPEG Coder for a Partially Reliable Transport Service,
Proceedings 7th Int. Workshop on Interactive Distributed Multimedia Systems and Telecommunication Services (IDMS 2000),
Enschede, The Netherlands, October, 2000. LNCS, Springer-Verlag, Berlin


• Brunstrom, A., Asplund, K., Garcia, J.,
Enhancing TCP Performance by Allowing Controlled Loss,
Proceedings SSGRR 2000 Computer & eBusiness Conference ,
L'Aquila, Italy, August, 2000


• Garcia, J., Brunstrom, A.
Efficient Image Transfer for Wireless Networks
Proceedings 2nd Int. Conference on Advanced Communication Techology (ICACT2000),
Muju, South Korea, February, 2000.


• Schneyer, S., Garcia, J., Brunstrom, A., Asplund, K.
PRTP: A Partially Reliable Transport Protocol for Multimedia Applications
Proceedings Int. Symposium on Intelligent Multimedia and Distance Education (ISIMADE),
Baden-Baden, Germany, August 1999.


• Asplund, K., Brunstrom, A., Garcia, J., Grinnemo, K., Schneyer, S.
PRTP - A Partially Reliable Transport Protocol for Multimedia Applications: Background Information and Analysis
Karlstad University Studies 1999:05, December 1999,