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Dr. Urtzi Ayesta

Dr. Urtzi Ayesta

Ikerbasque Research Professor
(Basque)

  • Doctor in Computer Science from the Université de Nice Sophia-Antipolis
  • Postdoc at CWI, Amsterdam, funded by a fellowship from ERCIM, the European Research Consortium in Informatics and Mathematics. PhD research carried out at INRIA and France Telecom R&D, France. MSc in Electrical Engineering at Columbia University.
  • Research line: Scheduling theory, queueing theory, stochastic processes, game theory and their application to the performance evaluation, conception and dimensioning of telecommunication networks and distributed systems.
  • Comes from the post of tenured researcher position at CNRS-LAAS, Toulouse, France.
  • Joins BCAM - Basque Center for Applied Mathematics.

view curriculum
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Publications

2011

Altman E., Ayesta U., Prabhu B.J. (2011)
Optimal Load Balancing in Processor Sharing Systems
Telecommunication Systems

I.M. Verloop, U. Ayesta, R. Nunez-Queija (2011)
Heavy-traffic analysis of a multiple-phase network with discriminatory processor sharing
Operations Research

S. Aalto, U. Ayesta, R. Righter (2011)
Properties of the Gittins index with application to optimal
Probability in the Engineering and Informational Sciences

U. Ayesta, P. Jacko, V. Novak (2011)
A nearly-optimal Index Rule for Scheduling of Users with Abandonment
Proceedings of IEEE INFOCOM 2011

J. Anselmi, U. Ayesta, A. Wierman (2011)
Competition yields efficiency in load balancing games
Performance Evaluation

U. Ayesta, A. Izagirre, I.M. Verloop (2011)
Heavy-Traffic analysis of discriminatory random order of service
Performance Evaluation Review

U. Ayesta, M. Erausquin, M. Jonckheere, I.M. Verloop (2011)
Stability and asymptotic optimality of opportunistic schedulers in wireless systems
Proceedings of VALUETOOLS

U. Ayesta, M. Erausquin, P. Jacko (2011)
Resource-sharing in a single server with time-varying capacity
Proceedings of IEEE 49th Allerton Conference

2010

Verloop I.M., Ayesta U., Borst S.C. (2010)
Monotonicity Properties for multi-class queueing systems
Discrete Events Dynamic Systems

Zhang Y., Piunovskiy A., Ayesta U., Avrachenkov K. (2010)
Convergence of trajectories and optimal buffer sizing for MIMD congestion control
Computer Communications

K. Avrachenkov, U. Ayesta, A.P. Piunovskiy (2010)
Convergence of trajectories and optimal buffer sizing for AIMD congestion control
Performance Evaluation

U. Ayesta, M. Erauskin, P. Jacko (2010)
A Modeling Framework for Optimizing the Flow-Level Scheduling with Time-Varying Channels
Performance Evaluation

U. Ayesta, O. Brun, B.J. Prabhu (2010)
Price of Anarchy in Non-Cooperative Server-Farms
Proceedings of IEEE INFOCOM 2010

M. Allman, K. Avrachenkov, U. Ayesta, J. Blanton, P. Hurtig (2010)
Early Retransmit for TCP and SCTP
Requests For Comments (RFC) 5827

2009

Aalto S., Ayesta U. (2009)
SRPT applied to bandwidth-sharing networks
Annals of Operations Reseach

Ayesta U., Mandjes M. (2009)
Bandwidth-sharing networks under a diffusion scaling
Annals of Operations Research

Verloop I.M., Ayesta U., Nunez-Queija R. (2009)
Heavy-traffic analysis of the M/PH/1 discriminatory processor sharing queue with phase-dependent weights
Performance Evaluation Review

2008

Aalto S., Ayesta U. (2008)
Recent sojourn time result for multi-level processor sharing scheduling policies
Statistica Neerlandica

In press

U. Ayesta, O. Brun, B.J. Prabhu (2011)
Price of Anarchy in Non-Cooperative Load Balancing Games

Books and book chapters

Published

  • K. Avrachenkov, U. Ayesta, N. Osipova (2010)
    Type: chapters
    Book: Modern Trends in Controlled Stochastic Processes: Theory and Applications
    Chapter: Conditional sojourn time of optimal scheduling policy in a multi-class single-server queue
    Page numbers: 284-303
    ISBN: 1-905986-30-0 | United Kingdom | Editors: A.P. Piunovskiy
  • Ayesta U., Piunovskiy A., Zhang Y. (2008)
    Type: chapters
    Book: Telecommunications Modeling, Policy and Technology
    Chapter: Fluid model of an Internet router under the MIMD control scheme
    Page numbers: 239-251
    ISBN: 978-0-387-77779-5 | Springer US | Editors: S. Raghavan, B. Golden and E. Wasil

Patents

  • Method for selecting a transmission channel within a time division multiple access (TDMA) communication system
  • Method for efficient scheduling in a resource-sharing system
 
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