Department of Communications and Networking

Performance Analysis

The group studies mathematical modelling and analysis of the traffic and performance of modern ICT systems. The methods are typically based on applied probability, queueing theory, teletraffic theory, scheduling theory, and stochastic optimal control techniques. In addition, event-based simulation and other numerical methods are utilised in the research.
Server Cluster, constructed by Pasi Lassila

The group was established by Prof. Jorma Virtamo, who also led it until his retirement in 2009. From that on, the group has been led by Dr. Samuli Aalto. It is an internationally recognized research group in the area of queueing and teletraffic theory, as well as the stochastic performance analysis of ICT systems.

  Current and recent research topics include:

  • Analysis of the performance-energy trade-off in queueing systems under various scheduling disciplines
  • Analysis of performance degradation in parallel-server systems
  • Analysis of signalling performance for M2M traffic in wireless systems
  • Optimal scheduling problem in queueing systems based on the Gittins index approach
  • Near-optimal dispatching control of energy-aware parallel service systems based on the Whittle index approach
  • Near-optimal opportunistic scheduling control in wireless systems based on the Whittle index approach
  • Near-optimal load balancing problem in energy-aware 5G HetNets based on the Whittle index approach
     

Contact

The research group is led by Dr. Samuli Aalto.

Latest publications

On value functions for FCFS queues with batch arrivals and general cost structures

Esa Hyytiä, Rhonda Righter, Jorma Virtamo, Lauri Viitasaari 2020 Performance Evaluation

Indexability of an opportunistic scheduling problem with partial channel information

Samuli Aalto, Pasi Lassila, Ianire Taboada 2019 Proceedings of the 12th EAI International Conference on Performance Evaluation Methodologies and Tools, VALUETOOLS 2019

Near-optimal dispatching policy for energy-aware server clusters

Samuli Aalto, Pasi Lassila 2019 Performance Evaluation

Whittle index approach to opportunistic scheduling with partial channel information

Samuli Aalto, Pasi Lassila, Ianire Taboada 2019 Performance Evaluation

Performance Degradation in Parallel-Server Systems

Josu Doncel, Samuli Aalto, Urtzi Ayesta 2019 IEEE/ACM Transactions on Networking

On energy-aware M/G/1-LAS queue with batch arrivals

Pasi Lassila, Samuli Aalto 2019 Operations Research Letters

Optimal energy-aware load balancing and base station switch-off control in 5G HetNets

Pasi Lassila, Misikir Eyob Gebrehiwot, Samuli Aalto 2019 Computer Networks

Whittle index approach to energy-aware dispatching

Samuli Aalto, Pasi Lassila 2018 International Teletraffic Congress

Energy vs. QoX network- and cloud services management

Bego Blanco, Fidel Liberal, Pasi Lassila, Samuli Aalto, Javier Sainz, Marco Gribaudo, Barbara Pernici 2018 Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Dynamic load balancing in 5G HetNets for optimal performance-energy tradeoff

Misikir Gebrehiwot, Pasi Lassila, Samuli Aalto 2018 IFIP Networking 2018
More information on our research in the Research database.
Research database
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