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Conferences by Maciej Stasiak

The paper presents and describes the uplink blocking probability calculation method in cellular s... more The paper presents and describes the uplink blocking probability calculation method in cellular systems with WCDMA radio interface and finite source population. The method is based on the model of the full availability group with multi-rate traffic streams. The proposed method can be easily applied to 3G network capacity calculations during planning stages of its design.

Papers by Maciej Stasiak

Communications in Computer and Information Science, 2016

This article proposes a new multi-dimensional Erlang’s Ideal Grading (EIG) model with queues that... more This article proposes a new multi-dimensional Erlang’s Ideal Grading (EIG) model with queues that can service a number of call classes with differentiated access to resources. The model was used to determine delays and packet loss probabilities in the access system composed of a node in the operator’s network and a number of users. The analytical results obtained in the study were then compared with the results of a simulation, which confirmed the essential and required accuracy of the proposed model. The model developed in the study can be used to analyse, design and optimize present-day operator’s networks.

Stasiak/Modeling and Dimensioning of Mobile Networks, 2010

The aim of this paper is to present a new analytical calculation method for the occupancy distrib... more The aim of this paper is to present a new analytical calculation method for the occupancy distribution and the blocking probability in the so-called limited-availability group with multi-service sources and reservation mechanisms. The paper considers multi-service limited-availability systems with multi-service sources, in which each single traffic source can generate calls of different traffic classes. To date, only models of multi-service systems with single-service sources, in which a single source of a given class generates always only calls of this particular class have been considered in teletraffic literature. The results of analytical modeling of the limited-availability systems with multi-service sources and reservation mechanisms are compared with simulation data, which confirm a high accuracy of the method. Any possible application of the proposed model can be considered in the context of wireless networks with multi-service sources and reservation mechanisms, as well as ...

2017 IEEE 19th International Conference on High Performance Computing and Communications; IEEE 15th International Conference on Smart City; IEEE 3rd International Conference on Data Science and Systems (HPCC/SmartCity/DSS), 2017

This paper presents a model of a queueing system with multi-service adaptive traffic. This type o... more This paper presents a model of a queueing system with multi-service adaptive traffic. This type of low-latency traffic is one of the most dominant type of traffic in modern packet networks. The idea and operation of the model is discussed with the example of a queueing system with the FIFO service discipline.

Modeling and Dimensioning of Mobile Networks, 2010

Prezentowana książka jest pierwszym w Polsce tak obszernym opracowaniem, dotyczącym inżynierii ru... more Prezentowana książka jest pierwszym w Polsce tak obszernym opracowaniem, dotyczącym inżynierii ruchu i wymiarowania sieci bezprzewodowych. W książce omówiono zarówno zagadnienia podstawowe, tj. wprowadzenie do teorii ruchu oraz jednokanałowe systemy z przelewem ruchu, jak i zagadnienia bardziej zaawansowane, tj. modele systemów z ruchem zintegrowanym oraz modele kolejkowe. Książka zawiera również algorytmy umożliwiające praktyczne wymiarowanie oraz optymalizację wybranych interfejsów w sieciach telefonii komórkowej 2/3 G.

ABSTRACT There have been many heuristic algorithms finding multicast trees proposed over the past... more ABSTRACT There have been many heuristic algorithms finding multicast trees proposed over the past few years. The necessity for finding a better and more suitable algorithm is still a current and important challenge. The article presents a new multicast routing algorithm for finding a multicast tree in packet networks. The objective of the K-Shortest Path Multicast Algorithm (KSPMA) is to minimize the cost of paths between the source and each destination node using a generalized Dijkstra's algorithm that would comply with maximum delay bound along each path. A wide range of simulation research carried out by the authors for many network topologies and parameters has confirmed the effectiveness of the proposed algorithm.

"This book is a must-read for all network planners and other professionals wishing to im... more "This book is a must-read for all network planners and other professionals wishing to improve the quality and cost efficiency of 3G and LTE networks In this book, the authors address the architecture of the 2/3G network and the Long Term Evolution (LTE) network. The book proposes analytical models that make the analysis and dimensioning of the most important interfaces, i.e. WCDMA or Iub, possible. Furthermore, the authors include descriptions of fundamental technological issues in 2/3 G networks, basic traffic engineering models and frequent examples of the application of analytical models in the analysis and dimensioning of the interface of cellular networks. The specific knowledge included in the content will enable the reader to understand and then to prepare appropriate programming softwares that will allow them to evaluate quality parameters of cellular networks, i.e. blocking probabilities or call losses. Additionally, the book presents models for the analysis and dimensioning of the Wideband Code Division Multiple Access (WCDMA) radio interface and the Iub interface, both carrying a mixture of Release 99 traffic (R99) and High-Speed Packet Access (HSPA) traffic streams. Finally, the analytical models presented in the book can be also used in the process of modeling and optimization of LTE networks. Key Features: Describes the architecture and the modes of operation of the cellular 2/3/4G systems and the LTE network Covers the traffic theory and engineering within the context of mobile networks Presents original analytical methods that enable their users to dimension selected interfaces of cellular networks Discusses models for the analysis and dimensioning of the Wideband Code Division Multiple Access (WCDMA) radio interface and the Iub interface, both carrying a mixture of Release 99 traffic (R99) and High-Speed Packet Access (HSPA) traffic streams Includes problems as well as an accompanying website containing solutions, software tools and interactive flash animations (http://wiley.teletraffic.pl) This book will be an invaluable guide for professional engineers (radio planning engineers, optimization engineers, transmission engineers, core network engineers, Service Management engineers) working in the areas of mobile wireless networks technology, not only in optimization process, but also in profitability assessment of newly implemented services (i.e. in NPV - Net Present Value analysis), and researchers and scientists. Advanced students in the fields of mobile communications networks and systems will also find this book insightful."

Abstract—The aim of this paper is to present a new analytical calculation method for the occupanc... more Abstract—The aim of this paper is to present a new analytical calculation method for the occupancy distribution and the blocking probability in the so-called limited-availability group with multi-service sources and reservation mechanisms. The paper considers multi-service limited-availability systems with multi-service sources, in which each single traffic source can generate calls of different traffic classes. To date, only models of multi-service systems with single-service sources, in which a single source of a given class generates always only calls of this particular class have been considered in teletraffic literature. The results of analytical modeling of the limited-availability systems with multi-service sources and reservation mechanisms are compared with simulation data, which confirm a high accuracy of the method. Any possible application of the proposed model can be considered in the context of wireless networks with multi-service sources and reservation mechanisms, as...

The aim of this article is to present a new analytical calculation method for the occupancy distr... more The aim of this article is to present a new analytical calculation method for the occupancy distribution and the blocking probability in the so-called limited-availability group with multi-service sources and reservation mechanisms. The limited-availability group consists of links with different capacities. The article considers multi-service limited-availability systems with multi-service sources, in which each single traffic source can generate calls of different traffic classes. The results of analytical modeling of the limited-availability systems with multi-service sources and reservation mechanisms are compared with simulation data, which confirm a high accuracy of the method. Any possible application of the proposed model can be considered in the context of wireless networks with multi-service sources and reservation mechanisms. The proposed model can be also considered in the context of switching networks.

Communications in Computer and Information Science, 2016

Stasiak/Modeling and Dimensioning of Mobile Networks, 2010

Modeling and Dimensioning of Mobile Networks, 2010

Journal of Telecommunications and Information Technology, Sep 30, 2009

The article presents the application of a new analytical model of the full-availability group car... more The article presents the application of a new analytical model of the full-availability group carrying a mixture of different multi-rate traffic classes with compression property for modeling the WCDMA radio interface with packet scheduling. The proposed model can be directly used for modeling of the WCDMA interface in the UMTS network servicing different traffic classes. The described model can be applied for a validation of the efficiency of the WCDMA interface measured by the blocking probability and the average carried traffic for particular traffic classes.

Theoretical and Applied Informatics, Polish Academy of Science, Jun 2009

There have been many heuristic algorithms finding multicast trees proposed over the past few year... more There have been many heuristic algorithms finding multicast trees proposed over the past few years. The necessity for finding a better and more suitable algorithm is still a current and important challenge. The article presents a new multicast routing algorithm for finding a multicast tree in packet networks. The objective of the K-Shortest Path Multicast Algorithm (KSPMA) is to minimize the cost of paths between the source and each destination node using a generalized Dijkstra’s algorithm that would comply with maximum delay bound along each path. A wide range of simulation research carried out by the authors for many network topologies and parameters has confirmed the effectiveness of the proposed algorithm.

"This book is a must-read for all network planners and other professionals wishing to improve the... more "This book is a must-read for all network planners and other professionals wishing to improve the quality and cost efficiency of 3G and LTE networks

In this book, the authors address the architecture of the 2/3G network and the Long Term Evolution (LTE) network. The book proposes analytical models that make the analysis and dimensioning of the most important interfaces, i.e. WCDMA or Iub, possible. Furthermore, the authors include descriptions of fundamental technological issues in 2/3 G networks, basic traffic engineering models and frequent examples of the application of analytical models in the analysis and dimensioning of the interface of cellular networks. The specific knowledge included in the content will enable the reader to understand and then to prepare appropriate programming softwares that will allow them to evaluate quality parameters of cellular networks, i.e. blocking probabilities or call losses. Additionally, the book presents models for the analysis and dimensioning of the Wideband Code Division Multiple Access (WCDMA) radio interface and the Iub interface, both carrying a mixture of Release 99 traffic (R99) and High-Speed Packet Access (HSPA) traffic streams. Finally, the analytical models presented in the book can be also used in the process of modeling and optimization of LTE networks.

Key Features:

Describes the architecture and the modes of operation of the cellular 2/3/4G systems and the LTE network
Covers the traffic theory and engineering within the context of mobile networks
Presents original analytical methods that enable their users to dimension selected interfaces of cellular networks
Discusses models for the analysis and dimensioning of the Wideband Code Division Multiple Access (WCDMA) radio interface and the Iub interface, both carrying a mixture of Release 99 traffic (R99) and High-Speed Packet Access (HSPA) traffic streams
Includes problems as well as an accompanying website containing solutions, software tools and interactive flash animations (http://wiley.teletraffic.pl)

This book will be an invaluable guide for professional engineers (radio planning engineers, optimization engineers, transmission engineers, core network engineers, Service Management engineers) working in the areas of mobile wireless networks technology, not only in optimization process, but also in profitability assessment of newly implemented services (i.e. in NPV - Net Present Value analysis), and researchers and scientists. Advanced students in the fields of mobile communications networks and systems will also find this book insightful."