Jorge Ortiz

 410 Soda Hall
 Computer Science Division
 University of California, Berkeley
 Berkeley, CA 94720

 Office:   510-643-3327
 Mobile:  617-784-6550 
 
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I am a graduate student in the Computer Science division working in operating systems and networking.  My advisor is Professor David Culler.  In 2003 I graduated from M.I.T. with a degree in Electrical Engineering and Computer Science and spent 3 years working for Oracle Corporation after graduation. I am a member of the LoCal project and a member of the Wireless Embedded Systems group at UC Berkeley.
 

My research interests are in distributed systems, networking, and sensor networks.  I am also interested in ubiquitous and energy efficient computing.

Current Projects

Multichannel Reliability Assessment in Real World WSNs

As the number of wireless devices increase, the frequency spectrum becomes further congested. Deployments of wireless devices in harsh radio environments (i.e. an industrial plant) also motivate the study of alternate communication protocols that offer enough diversity to overcome interference. This work explores the use of frequency diversity to address this problem and examines its effectiveness in various environmental settings. We also examine the interplay between frequency agility at the MAC layer and route diversity in the network layer and look to understand the cost-tradeoffs in the diversity of choices offered by each layer, particularly with respect to reliability.

 
 
 

Conference, Workshop, and Technical Report Publications

Jorge Ortiz and David Culler.  Multichannel Reliability Assessment in Real World WSNs.  Under Submission.

Stephen Dawson-Haggerty, Jorge Ortiz, Xiaofan Jiang and David E. Culler.  The Effect of Link Churn on Wireless Routing.  Technical Report No. UCB/EECS-2008-109, EECS Department, University of California, Berkeley, 2008 [pdf]

Jorge Ortiz, Chris R. Baker, Daekyeong Moon, Rodrigo Fonseca, and Ion Stoica.  Beacon Location Service: A Location Service for Point-to-Point Routing in Wireless Sensor Networks.  International Conference in Information Processing in Sensor Networks: Special Track on Platform Tools and Design Methods For Network Embedded Sensors 2007 (IPSN '07).  [pdf] [ ppt]

Xiaofan Jiang, Jay Taneja, Jorge Ortiz, Arsalan Tavakoli, Prabal Dutta, Jaein Jeong, David Culler, Philip Levis, and Scott Shenker.  An Architecture for Energy Management in Wireless Sensor Networks.  International Workshop on Wireless Sensor Network Architecture 2007.  [pdf]

Arsalan Tavakoli, Prabal Dutta, Jaein Jeong, Sukun Kim, Jorge Ortiz, David Culler, Philip Levis, and Scott Shenker.  A Modular Sensornet Architecture: Past, Present, and Future Directions.  International Workshop on Wireless Sensor Network Architecture 2007.  [pdf]

Ang-Chih Kao and Jorge Ortiz.  Connection Oriented Routing Environment (CORE): A Generalized Device Interconnect.  M.I.T. Student Oxygen Workshop SOW 2002. [pdf]

 

 

  Poster Publications

Jorge Ortiz and David Culler.  Evaluating Diversity: Evaluating the Cost of Frequency Diversity in Communication and Routing.  The 6th ACM Conference on Embedded Networked Sensor Systems (SenSys '08). Awarded Best Poster.  [pdf] [ ppt]

Datasense:  Sensing the Datacenter (TTX5 2008)

Evaluating the Hairy-Edge Hypothesis: The Effects of Wireless Link Variability on Sensornet Communication Protocols (TTX5 2008)

Location Service for Point-to-Point Routing in Wireless Sensor Networks (TTX3 2006)