Search Results

Journal Papers

  1. S. Aalto and P. Lassila, Near-optimal dispatching policy for energy-aware server clusters, Performance Evaluation, vol. 135, 2019 (link)(bib)
  2. P. Lassila and S. Aalto, On energy-aware M/G/1-LAS queue with batch arrivals, Operations Research Letters, vol. 47, no. 6, pp. 611-617, 2019 (link)(bib)
  3. P. Lassila, M. E. Gebrehiwot and S. Aalto, Optimal energy-aware load balancing and base station switch-off control in 5G HetNets, Computer Networks, vol. 159, pp. 10-22, 2019 (link)(bib)(abstract)
  4. S. Aalto, P. Lassila and I. Taboada, Whittle index approach to opportunistic scheduling with partial channel information, Performance Evaluation, vol. 136, 2019 (link)(bib)(abstract)
  5. P. Osti, P. Lassila and S. Aalto, Performance of D2D Underlay and Overlay for Multi-class Elastic Traffic, Computer Communications, vol. 117, pp. 147-163, 2018 (link)(bib)(abstract)
  6. M. E. Gebrehiwot, S. Aalto and P. Lassila, Energy-aware SRPT server with batch arrivals: analysis and optimization, Performance Evaluation, vol. 115, pp. 92-107, 2017 (link)(bib)(abstract)
  7. S. Aalto, P. Lassila and P. Osti, Opportunistic scheduling with flow size information for Markovian time-varying channels, Performance Evaluation, vol. 112, pp. 27 - 52, 2017 (link)(bib)(abstract)
  8. I. Taboada, S. Aalto, P. Lassila and F. Liberal, Delay- and energy-aware load balancing in ultra-dense heterogeneous 5G networks, Transactions on Emerging Telecommunications Technologies, vol. 28, pp. 1-12, 2017 (link)(bib)(abstract)
  9. S. Aalto, P. Lassila and P. Osti, Whittle index approach to size-aware scheduling for time-varying channels with multiple states, Queueing Systems, vol. 83, pp. 195-225, 2016 (link)(bib)(abstract)
  10. M. E. Gebrehiwot, S. Aalto and P. Lassila, Energy-performance trade-off for processor sharing queues with setup delay, Operations Research Letters, vol. 44, pp. 101-106, 2016 (link)(bib)(abstract)
  11. M. E. Gebrehiwot, S. Aalto and P. Lassila, Optimal energy-aware control policies for FIFO servers, Performance Evaluation, vol. 103, pp. 41-59, 2016 (link)(bib)(abstract)
  12. X. Lu, S. Aalto and P. Lassila, Performance-Energy Trade-Off in Controllable Servers with Setup Delays, Australian Journal of Electrical and Electronics Engineering, vol. 13, no. 2, pp. 109-121, 2016 (link)(bib)(abstract)
  13. P. Osti, S. Aalto and P. Lassila, Performance and optimization of dynamic-TDD intercell coordination with elastic traffic, Telecommunication Systems, vol. 63, no. 4, pp. 655-679, 2016 (bib)(abstract)
  14. J. Nousiainen, J. Virtamo and P. Lassila, Impact of Multidirectional Forwarding on the Capacity of Large Wireless Networks, IEEE Communications Letters, vol. 18, no. 2, pp. 372-375, 2014 (pdf)(bib)(abstract)
  15. P. Osti, P. Lassila, S. Aalto, A. Larmo and T. Tirronen, Analysis of PDCCH performance for M2M traffic in LTE, IEEE Transactions on Vehicular Technology, vol. 63, no. 9, pp. 4357-4371, 2014 (pdf)(bib)(abstract)
  16. J. Virtamo, E. Hyytiä and P. Lassila, Criticality Condition for Information Floating with Random Walk of Nodes, Performance Evaluation, vol. 70, no. 2, pp. 114-123, 2013 (link)(bib)(abstract)
  17. S. Aalto, A. Penttinen, P. Lassila and P. Osti, Optimal size-based opportunistic scheduler for wireless systems, Queueing Systems, vol. 72, no. 1, pp. 5-30, 2012 (pdf)(bib)(abstract)
  18. E. Hyytiä, J. Virtamo, P. Lassila and J. Ott, Continuum percolation threshold for permeable aligned cylinders and opportunistic networking, IEEE Communications Letters, vol. 16, no. 7, pp. 1064-1067, 2012 (link)(bib)
  19. J. Ott, E. Hyytiä, P. Lassila, J. Kangasharju and S. Santra, Floating Content for Probabilistic Information Sharing, Pervasive and Mobile Computing, vol. 7, no. 6, pp. 671-689, 2011 (bib)(abstract)
  20. J. Nousiainen, J. Virtamo and P. Lassila, Maximum Weight Independent Sets in an Infinite Plane with Uni- and Bidirectional Interference Models, Annals of Telecommunications, vol. 66, 1--2, pp. 119-132, 2011 (pdf)(bib)(abstract)
  21. P. Lassila, A. Penttinen and J. Virtamo, Dimensioning of data networks: a flow-level perspective, European Transactions on Telecommunications, vol. 20, pp. 549-563, 2009 (bib)(abstract)
  22. P. Lassila and P. Kuusela, Performance of TCP on low-bandwidth wireless links with delay spikes, European Transactions on Telecommunications, vol. 19, no. 6, pp. 653-667, 2008 (pdf)(bib)(abstract)
  23. E. Hyytiä, P. Lassila and J. Virtamo, Spatial Node Distribution of the Random Waypoint Mobility Model with Applications, IEEE Transactions on Mobile Computing, vol. 5, no. 6, pp. 680-694, 2006 (pdf)(bib)(abstract)
  24. V. Sharma, J. Virtamo and P. Lassila, Performance Analysis of the Random Early Detection Algorithm, Probability in the Engineering and Informational Sciences, vol. 16, no. 3, pp. 367-388, 2002 (bib)
  25. P. Lassila and J. Virtamo, Nearly Optimal Importance Sampling for Monte Carlo Simulation of Loss Systems, ACM Transactions on Modeling and Computer Simulation, vol. 10, no. 4, pp. 326-347, 2000 (link)(bib)
  26. P. Lassila and J. Virtamo, Variance Reduction in Monte Carlo Simulation of Product Form Systems, IEE Electronics Letters, vol. 34, no. 12, 1998 (link)(bib)(abstract)

Conference Papers

  1. S. Aalto, P. Lassila and I. Taboada, Indexability of an opportunistic sceduling problem with partial channel information, in Proceedings of VALUETOOLS 2019, 2019, Palma de Mallorca, Spain (bib)(abstract)
  2. E. Hyytiä, D. Down, P. Lassila and S. Aalto, Dynamic control of running servers, in Proceedings of 19th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems (MMB 2018), 2018, Erlangen, Germany (bib)(abstract)
  3. S. Aalto and P. Lassila, Whittle index approach to energy-aware dispatching, in In Proceedings of 30th International Teletraffic Congress (ITC-30), pp. 19-27, 2018, Vienna, Austria (link)(bib)
  4. M. E. Gebrehiwot, P. Lassila and S. Aalto, Dynamic load balancing in 5G HetNets for optimal performance-energy tradeoff, in Proceedings of IFIP NETWORKING, 2018, Zurich, Switzerland (bib)(abstract)
  5. M. E. Gebrehiwot, S. Aalto and P. Lassila, Near-optimal policies for energy-aware task assignment in server farms, in Proceedings of 2nd International Workshop on Theoretical Approaches to Performance Evaluation, Modeling and Simulation, 2017, Madrid, Spain (bib)(abstract)
  6. M. E. Gebrehiwot, S. Aalto and P. Lassila, Energy-aware SRPT queues with setup delay, in Proceedings of 13th International Conference on Quantitative Evaluation of SysTems (QEST 2016), 2016, Quebec, Canada (link)(bib)
  7. P. Osti, P. Lassila and S. Aalto, Performance of D2D underlay and overlay for elastic traffic, in Proceedings of The 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM 2016), 2016 (bib)(abstract)
  8. P. Osti, S. Aalto and P. Lassila, Minimizing access delay for M2M traffic in multi-RAT HetNets, in Proceedings of the 18th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (MSWiM), 2015 (bib)(abstract)
  9. S. Aalto, P. Lassila and P. Osti, Whittle index approach to size-aware scheduling with time-varying channels, in Proceedings of ACM SIGMETRICS, 2015, Portland, Oregon, USA (bib)(abstract)
  10. P. Osti, S. Aalto and P. Lassila, Flow-level Modeling and Optimization of Intercell Coordination with Dynamic TDD, in Proceedings of the 10th ACM International Symposium on QoS and Security for Wireless and Mobile Networks, 2014 (pdf)(bib)(abstract)
  11. P. Osti, S. Aalto and P. Lassila, Load balancing for M2M random access in LTE HetNets, in Proceedings of IEEE 22nd International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), 2014 (bib)(abstract)
  12. M. E. Gebrehiwot, S. Aalto and P. Lassila, Optimal sleep-state control of energy-aware M/G/1 queues, in Proceedings of 8th International Conference on Performance Evaluation Methodologies and Tools (Valuetools), 2014, Bratislava, Slovakia (bib)(abstract)
  13. A. Khalid, P. Lassila and S. Aalto, Load Balancing of Elastic Data Traffic in Heterogeneous Wireless Networks, in Proceedings of 25th International Teletraffic Congress (ITC-25), 2013 (pdf)(bib)(abstract)
  14. X. Lu, S. Aalto and P. Lassila, Performance-Energy Trade-Off in Data Centers: Impact of Switching Delay, in Proceedings of 22nd ITC Specialist Seminar on Energy Efficient and Green Networking (SSEEGN 2013), pp. 50-55, 2013, Christchurch, New Zealand (pdf)(bib)(abstract)
  15. J. Nousiainen, J. Virtamo and P. Lassila, Multidirectional Forwarding Capacity in a Massively Dense Wireless Network, in 24th International Teletraffic Congress (ITC 24), 2012 (pdf)(bib)(abstract)
  16. J. Nousiainen, P. Lassila and J. Virtamo, Instantaneous Forwarding Capacity under SINR Threshold Interference Model, in Proceedings of 11th Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2012), 2012 (pdf)(bib)(abstract)
  17. P. Lassila, A. Penttinen and S. Aalto, Flow-level modeling and analysis of dynamic TDD in LTE, in Proceedings of Eighth Euro-NF Conference on Next Generation Internet (NGI 2012), 2012 (pdf)(bib)(abstract)
  18. P. Osti, P. Lassila and S. Aalto, Optimal intercell coordination for multiple user classes with elastic traffic, in Proceedings of Eighth Euro-NF Conference on Next Generation Internet (NGI 2012), 2012 (pdf)(bib)(abstract)
  19. E. Hyytiä, P. Lassila, J. Ott and J. Kangasharju, Floating information with stationary nodes, in Eighth Workshop on Spatial Stochastic Models for Wireless Networks (SpaSWin), 2012, Paderborn, Germany (bib)(abstract)
  20. S. Aalto, P. Lassila, P. Savolainen and S. Tarkoma, How Impatience Affects the Performance and Scalability of P2P Video-on-Demand Systems, in Proceedings of MAMA 2011 (The Thirteenth Workshop on Mathematical performance Modeling and Analysis), 2011 (pdf)(bib)
  21. J. Ott, E. Hyytiä, P. Lassila, T. Vaegs and J. Kangasharju, Floating Content: Information Sharing in Urban Areas, in Proceedings of IEEE PerCom, 2011 (pdf)(bib)(abstract)
  22. E. Hyytiä, J. Virtamo, P. Lassila, J. Kangasharju and J. Ott, When Does Content Float? Characterizing Availability of Anchored Information in Opportunistic Content Sharing, in Proceedings of IEEE INFOCOM, pp. 3123-3131, 2011, Shanghai, China (pdf)(bib)(abstract)
  23. J. Nousiainen, J. Virtamo and P. Lassila, Optimal Transmission Modes by Simulated Annealing, in Proceedings of 6th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks (PM2HW2N'11), pp. 101-108, 2011, Miami Beach, FL, USA (bib)(abstract)
  24. S. Aalto, A. Penttinen, P. Lassila and P. Osti, On the optimal trade-off between SRPT and opportunistic scheduling, in Proceedings of ACM SIGMETRICS, 2011, San Jose, California, USA (pdf)(bib)(abstract)
  25. S. Aalto, P. Lassila, N. Raatikainen, P. Savolainen and S. Tarkoma, P2P Video-on-Demand: Steady State and Scalability, in Proceedings of IEEE Globecom, 2010, Miami, USA (pdf)(bib)(abstract)
  26. S. Aalto, P. Lassila, P. Savolainen and S. Tarkoma, Segmented P2P Video-on-Demand: Modeling and Performance, in Proceedings of 22nd International Teletraffic Congress (ITC 22), 2010, Amsterdam, the Netherlands (pdf)(bib)(abstract)
  27. J. Melasniemi, P. Lassila and S. Aalto, Minimizing file transfer delays using SRPT in HSDPA with terminal constraints, in Proceedings of 4th Workshop on Network Control and Optimization (Net-Coop 2010), 2010, Ghent, Belgium (pdf)(bib)(abstract)
  28. J. Nousiainen, J. Virtamo and P. Lassila, On the Achievable Forwarding Capacity of an Infinite Wireless Network, in Proceedings of ACM MSWiM, pp. 151-159, 2010, Bodrum, Turkey (pdf)(bib)(abstract)
  29. S. Aalto and P. Lassila, Flow-level stability and performance of channel-aware priority-based schedulers, in Proceedings of 6th Euro-NF conference on Next Generation Internet (NGI 2010), 2010, Paris, France, (received the Best Paper Award) (pdf)(bib)(abstract)
  30. J. Nousiainen and P. Lassila, Approximating Maximum Directed Flow in a Large Wireless Network, in IEEE ICC, pp. 1-6, 2009, Dresden, Germany (pdf)(bib)(abstract)
  31. J. Nousiainen, J. Virtamo and P. Lassila, Maximum Weight Independent Sets in an Infinite Plane, in 21st International Teletraffic Congress (ITC 21), pp. 1-8, 2009, Paris, France, (received the Best Student Paper Award) (pdf)(bib)(abstract)
  32. J. Nieminen, J. Karvo, P. Lassila and M. Peuhkuri, Impact of Heterogeneous Packet Sizes on Flow Fairness, in Proceedings of 16th International Conference on Telecommunications (ICT), 2009, Marrakech, Morocco (bib)(abstract)
  33. P. Lassila and S. Aalto, Combining opportunistic and size-based scheduling in wireless systems, in Proceedings of ACM MSWiM, pp. 323-332, 2008, Vancouver, CA (pdf)(bib)(abstract)
  34. J. Nousiainen, J. Virtamo and P. Lassila, Forwarding Capacity of an Infinite Wireless Network, in Proceedings of ACM MSWiM, pp. 177-184, 2008, Vancouver, Canada (pdf)(bib)(abstract)
  35. S. Aalto and P. Lassila, Impact of size-based scheduling on flow level performance in wireless downlink data channels, in Proceedings of 20th International Teletraffic Congress (ITC-20), pp. 1096-1107, 2007, Ottawa, Canada (pdf)(bib)(abstract)
  36. P. Lassila, A. Penttinen and J. Virtamo, Dimensioning methods for data networks with flow-level QoS requirements, in Proceedings of 32nd IEEE Conference on Local Computer Networks (LCN), pp. 353-359, 2007, Dublin, Ireland (pdf)(bib)(abstract)
  37. E. Hyytiä, P. Lassila and J. Virtamo, A Markovian Waypoint Mobility Model with Application to Hotspot Modeling, in Proceedings of IEEE ICC 2006, 2006 (pdf)(bib)(abstract)
  38. O. Apilo, P. Lassila and J. Virtamo, Performance of Local Forwarding Methods for Geographic Routing in Large Ad Hoc Networks, in Proceedings of The Fifth Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2006), 2006, Lipari, Italy (pdf)(bib)(abstract)
  39. J. Kilpi and P. Lassila, Micro- and macroscopic analysis of RTT variability in GPRS and UMTS network, in Proceedings of Networking 2006, pp. 1176-1181, 2006, Coimbra, Portugal (bib)(abstract)
  40. P. Lassila, A. Penttinen and J. Virtamo, Dimensioning of wireless mesh networks with flow-level QoS requirements, in The 3rd ACM International Workshop on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN 2006), 2006, Torremolinos, Spain (pdf)(bib)(abstract)
  41. P. Lassila, E. Hyytiä and H. Koskinen, Connectivity Properties of Random Waypoint Mobility Model for Ad Hoc Networks, in Proceedings of The Fourth annual Mediterranean workshop on Ad Hoc Networks (Med-Hoc-Net 2005), pp. 159-168, 2005, Île de Porquerolles, France (pdf)(bib)(abstract)
  42. E. Hyytiä, P. Lassila, A. Penttinen and J. Roszik, Traffic Load in Dense Wireless Multihop Network, in The 2nd ACM International Workshop on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN 2005), pp. 9-17, 2005, Montreal, Qc. Canada (pdf)(bib)(abstract)
  43. R. Boucherie and P. Lassila, Efficient estimation of blocking probabilities in non-stationary loss networks, in Proceedings of 19th International Teletraffic Congress (ITC-19), pp. 1707-1716, 2005, Beijing, China (pdf)(bib)(abstract)
  44. P. Lassila and M. Mandjes, A multi-level TCP model with heterogeneous RTTs, in Proceedings of Networking 2004, pp. 52-63, 2004, Athens, Greece (pdf)(bib)(abstract)
  45. P. Kuusela and P. Lassila, Modeling the impact of delay spikes on TCP performance on a low bandwidth GPRS wireless link, in Proceedings of 16th ITC Specialist Seminar, pp. 241-248, 2004, Antwerpen, Belgium (pdf)(bib)(abstract)
  46. P. Lassila, H. van den Berg, M. Mandjes and R. Kooij, An integrated packet/flow model for TCP performance analysis, in Proceedings of ITC-18, pp. 651-660, 2003, Berlin, Germany (pdf)(bib)(abstract)
  47. P. Kuusela, P. Lassila, J. Virtamo and P. Key, Modeling RED with Idealized TCP Sources, in Proceedings of IFIP ATM & IP 2001, pp. 155-166, 2001, Budapest, Hungary (pdf)(bib)
  48. P. Lassila, J. Karvo and J. Virtamo, Efficient Importance Sampling for Monte Carlo Simulation of Multicast Networks, in Proceedings of IEEE INFOCOM, pp. 432-439, 2001, Anchorage, Alaska (pdf)(bib)
  49. P. Kuusela, P. Lassila and J. Virtamo, Stability of TCP-RED Congestion Control, in Proceedings of ITC-17, pp. 655-666, Elsevier, 2001, Salvador da Bahia, Brazil (link)(bib)
  50. P. Lassila and J. Virtamo, Modeling the dynamics of the RED algorithm, in Proceedings of Quality of Future Internet Services (QofIS), pp. 28-42, Sringer-Verlag, 2000, Berlin, Germany (link)(bib)
  51. P. Lassila and J. Virtamo, Inverse convolution approach to importance sampling in Monte Carlo simulation of loss systems, in Proceedings of the 15th Nordic Teletraffic Seminar, pp. 161-172, 2000, Lund, Sweden (pdf)(bib)
  52. P. Lassila and J. Virtamo, Efficient Importance Sampling for Monte Carlo Simulation of Loss Systems, in Proceedings of ITC-16, pp. 787-796, Elsevier, 1999, Edinburgh, England (link)(bib)
  53. P. Lassila and J. Virtamo, Using Gibbs Sampler in Simulating Multiservice Loss Systems, in Performance of Information and Communications Systems '98 (arranged by IFIP TC6 WG6.3), 1998, Lund, Sweden (bib)(abstract)
  54. P. Lassila and J. Virtamo, Efficient Monte Carlo Simulation of Product Form Systems, in Fourteenth Nordic Teletraffic Seminar, NTS-14, pp. 355-366, 1998, Copenhagen, Denmark (pdf)(bib)(abstract)

Technical Documents

  1. P. Lassila and A. Penttinen, Survey on performance analysis of cognitive radio networks, Helsinki University of Technology, 2008 (pdf)(bib)(abstract)
  2. T. Huovila, P. Lassila, J. Manner and A. Penttinen, State of the Art Analysis of Wireless Mesh Technologies 2006, Helsinki University of Technology, 2006 (pdf)(bib)(abstract)
  3. M. Ilvesmäki, R. Kantola, M. Luoma, M. Peuhkuri, S. Aalto, P. Lassila and H. Hämmäinen, IRoNet - final technical report, HUT, Networking Laboratory, 2005 (pdf)(bib)
  4. P. Lassila and J. Virtamo, Access network dimensioning for elastic traffic based on flow-level QoS, Networking Laboratory, Helsinki University of Technology, 2005 (pdf)(bib)(abstract)
  5. P. Lassila and J. Virtamo, Dimensioning of wireless mesh networks with flow-level QoS requirements, Networking Laboratory, Helsinki University of Technology, 2005 (bib)(abstract)
  6. E. Hyytiä, P. Lassila, L. Nieminen and J. Virtamo, Spatial Node Distribution in the Random Waypoint Mobility Model, COST279, TD(04)029, 2004 (pdf)(bib)(abstract)
  7. P. Lassila and J. Virtamo, Nearly Optimal Importance Sampling for Monte Carlo Simulation of Loss Systems, COST257, TD(00), 2000 (pdf)(bib)(abstract)
  8. P. Lassila and J. Virtamo, Using Gibbs Sampler in Simulating Multiservice Loss Networks, COST257, TD(98)19, 1998 (pdf)(bib)(abstract)
  9. P. Lassila and J. Virtamo, Importance Sampling for Monte Carlo Simulation of Loss Systems, COST257, TD(98)49, 1998 (pdf)(bib)(abstract)
  10. P. Lassila, J. Virtamo and S. Aalto, Two approaches to simulating loss networks, COST257, TD(97)30, 1997 (pdf)(bib)(abstract)
  11. P. Lassila and J. Virtamo, Regenerative Simulation Analysis for Loss Systems: Single Link and Single Traffic Type Case, COST257, TD(97)43, 1997 (pdf)(bib)(abstract)

Theses

  1. P. Lassila, Methods for network performance evaluation: fast simulation of loss systems and analysis of Internet congestion control, Ph.D. thesis, Laboratory Report Series, Networking Laboratory, 3/2001, 2001 (link)(bib)
  2. P. Lassila, Efficient simulation techniques for multiservice loss systems, Licentiate thesis, Helsinki University of Technology, Networking Laboratory, 1999 (pdf)(bib)(abstract)

Books

  1. P. Lassila, E. Nyberg and J. Virtamo (eds.), The sixteenth Nordic teletraffic seminar NTS-16, 2002, Espoo, Finland (bib)

Other Documents

  1. O. Apilo, E. Hyytiä, H. Koskinen, P. Lassila, A. Penttinen and J. Virtamo, Wireless Multihop Networks, 2006, Presentation slides, Wireless Ad Hoc and Sensor Networks for Security Applications, Helsinki University of Technology, May 22, 2006 (bib)
  2. P. Lassila, Performance Challenges in Wireless Mesh Networks, 2006, Presentation slides, IST Summit 2006 - Strategies for Leadership: Workshop on ``Wireless Networks in the Next Decade'', Helsinki, November 21-23, 2006 (pdf)(bib)
  3. A. Ganguly and P. Lassila, A study of TCP-RED congestion control using NS2, Internal report, Networking Laboratory, Helsinki University of Technology, 2001 (pdf)(bib)
  4. J. Hlinovsky and P. Lassila, Efficient implementation of a loss system simulator in C, Internal report, Networking Laboratory, 1999 (bib)