Benedek Kovács - Academia.edu (original) (raw)

Papers by Benedek Kovács

Mobile Information Systems, 2006

This paper discusses the improvements and parameter optimization issues of LTRACK, a recently pro... more This paper discusses the improvements and parameter optimization issues of LTRACK, a recently proposed mobility management algorithm. Mathematical modelling of the algorithm and the behavior of the Mobile Node (MN) are used to optimize the parameters of LTRACK. A numerical method is given to determine the optimal values of the parameters. Markov chains are used to model both the base algorithm and the so-called loop removal effect. An extended qualitative and quantitative analysis is carried out to compare LTRACK to existing handover mechanisms such as MIP, Hierarchical Mobile IP (HMIP), Dynamic Hierarchical Mobility Management Strategy (DHMIP), Telecommunication Enhanced Mobile IP (TeleMIP), Cellular IP (CIP) and HAWAII. LTRACK is sensitive to network topology and MN behavior so MN movement modelling is also introduced and discussed with different topologies. The techniques presented here can not only be used to model the LTRACK algorithm, but other algorithms too. There are many d...

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium, 2008

In this paper a new mobility management approach is introduced. The main idea in this approach, t... more In this paper a new mobility management approach is introduced. The main idea in this approach, that not the network but the mobile node should manage the mobility for itself (similarly to the IP concept). The network nodes provide just basic services for mobile entities: connectivity and administration. We construct a protocol called the Client-based Mobility Frame System (CMFS) for this mobility environment. We propose some basic mobility management solutions that should be implemented in the mobile clients and provide details about a working simulation of a complete Mobility Management System. Examples of mobility management approaches such as the centralized-and hierarchical or cellular-like ones are also defined and hints are given what kind of algorithms might be implemented upon the Client-based Mobility Frame System. After the theoretical analysis a simulation shows the applicability of the newly introduced protocol framework.

This paper investigates mobility management strategies from the point of view of their need of si... more This paper investigates mobility management strategies from the point of view of their need of signalling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to compare the different types of mobility management algorithms. To obtain a good description of the network we calculate descriptive parameters from given topologies. Most mobility approaches derived from existing protocols are analyzed and their performances are numerically compared in various network and mobility scenarios. We developed a mobility management framework that is able to give general designing guidelines for the next generation mobility managements on given network, technology and mobility properties. With our model an operator can design the network and tune the parameters to obtain the optimal implementation of course revising existing systems is also possible. We present a vertical handover decision method as a special application of our model framework.

This paper investigates mobility management strategies from the point of view of their need of si... more This paper investigates mobility management strategies from the point of view of their need of signaling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to model the different types of mobility management algorithms. To obtain a good

6th International Conference on Computer Information Systems and Industrial Management Applications (CISIM'07), 2007

This paper investigates mobility management strategies from the point of view of their need of si... more This paper investigates mobility management strategies from the point of view of their need of signalling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to model the different types of mobility management algorithms. To obtain a good

Reaction Kinetics and Catalysis Letters, 2009

Detailed balance helps reduce the number of necessary measurements on ion channel models. Even im... more Detailed balance helps reduce the number of necessary measurements on ion channel models. Even imprecise formulations may lead to correct conditions because of the special structure of these models.

Solutions are proposed for the central problem of estimating the reaction rate coefficients in ho... more Solutions are proposed for the central problem of estimating the reaction rate coefficients in homogeneous kinetics. The first is based upon the fact that the right hand side of a kinetic differential equation is linear in the rate constants, whereas the second one uses the technique of neural networks. This second one is discussed deeply and its advantages, disadvantages and conditions of applicability are analyzed in the mirror of the first one. Numerical analysis carried out on practical models using simulated data, and our programs written in Mathematica.

In this paper a new mobility management is introduced. The main idea in this approach is that the... more In this paper a new mobility management is introduced. The main idea in this approach is that the mobil node should manage the mobility for itself not the network. The network nodes provide only basic services for mobile entities: connectivity and administration. We construct a framework called the Client-based Mobility Frame System (CMFS) for this mobility environment. We developed the CMFS protocol as a solution over IPv4 and we show how to use Mobile IPv6 to realize our concept. We propose some basic mobility management solutions that can be implemented into the mobile clients and give details about a working simulation of a complete Mobility Management System. Example mobility management approaches such as the centralized-and hierarchical-or cellular-like ones are also defined and hints are given what kind of algorithms might be implemented upon the Client-based Mobility Frame System over IPv4 and IPv6 as well. We introduce some example algorithms that can work with the CMFS making mobility management efficient by minimizing signalling load on the network. In the present work modeling and detailed discussion on the parameters of the algorithms is given and comparison to existing mobility approaches and protocols is done. We prepared a simulation to test our protocol and to back up the proposals we provide the reader with simulation results. We stress that still one the most important benefit of our findings is that all the MNs can run different management strategies and can optimize mobility for themselves.

The motivation behind this work is to provide a mathematical statistical theory and computational... more The motivation behind this work is to provide a mathematical statistical theory
and computational algorithms to estimate certain parameters in dynamical
models of various kinds. The main problems originate from biological,
chemical models and from telecommunication network technologies.
In case of telecommunication networks, quality of service problems is a
top priority issue. There are several mechanisms to address these and one
fundamental component in many of them is the logic that determines the
rate of the signaling or packet flow. The mathematical problem here is to
estimate the intensity of a stochastic point process.

Mobile Information Systems, 2006

This paper discusses the improvements and parameter optimization issues of LTRACK, a recently pro... more This paper discusses the improvements and parameter optimization issues of LTRACK, a recently proposed mobility management algorithm. Mathematical modelling of the algorithm and the behavior of the Mobile Node (MN) are used to optimize the parameters of LTRACK. A numerical method is given to determine the optimal values of the parameters. Markov chains are used to model both the base algorithm and the so-called loop removal effect. An extended qualitative and quantitative analysis is carried out to compare LTRACK to existing handover mechanisms such as MIP, Hierarchical Mobile IP (HMIP), Dynamic Hierarchical Mobility Management Strategy (DHMIP), Telecommunication Enhanced Mobile IP (TeleMIP), Cellular IP (CIP) and HAWAII. LTRACK is sensitive to network topology and MN behavior so MN movement modelling is also introduced and discussed with different topologies. The techniques presented here can not only be used to model the LTRACK algorithm, but other algorithms too. There are many d...

Networks 2008 - The 13th International Telecommunications Network Strategy and Planning Symposium, 2008

In this paper a new mobility management approach is introduced. The main idea in this approach, t... more In this paper a new mobility management approach is introduced. The main idea in this approach, that not the network but the mobile node should manage the mobility for itself (similarly to the IP concept). The network nodes provide just basic services for mobile entities: connectivity and administration. We construct a protocol called the Client-based Mobility Frame System (CMFS) for this mobility environment. We propose some basic mobility management solutions that should be implemented in the mobile clients and provide details about a working simulation of a complete Mobility Management System. Examples of mobility management approaches such as the centralized-and hierarchical or cellular-like ones are also defined and hints are given what kind of algorithms might be implemented upon the Client-based Mobility Frame System. After the theoretical analysis a simulation shows the applicability of the newly introduced protocol framework.

This paper investigates mobility management strategies from the point of view of their need of si... more This paper investigates mobility management strategies from the point of view of their need of signalling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to compare the different types of mobility management algorithms. To obtain a good description of the network we calculate descriptive parameters from given topologies. Most mobility approaches derived from existing protocols are analyzed and their performances are numerically compared in various network and mobility scenarios. We developed a mobility management framework that is able to give general designing guidelines for the next generation mobility managements on given network, technology and mobility properties. With our model an operator can design the network and tune the parameters to obtain the optimal implementation of course revising existing systems is also possible. We present a vertical handover decision method as a special application of our model framework.

This paper investigates mobility management strategies from the point of view of their need of si... more This paper investigates mobility management strategies from the point of view of their need of signaling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to model the different types of mobility management algorithms. To obtain a good

6th International Conference on Computer Information Systems and Industrial Management Applications (CISIM'07), 2007

This paper investigates mobility management strategies from the point of view of their need of si... more This paper investigates mobility management strategies from the point of view of their need of signalling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to model the different types of mobility management algorithms. To obtain a good

Reaction Kinetics and Catalysis Letters, 2009

Detailed balance helps reduce the number of necessary measurements on ion channel models. Even im... more Detailed balance helps reduce the number of necessary measurements on ion channel models. Even imprecise formulations may lead to correct conditions because of the special structure of these models.

Solutions are proposed for the central problem of estimating the reaction rate coefficients in ho... more Solutions are proposed for the central problem of estimating the reaction rate coefficients in homogeneous kinetics. The first is based upon the fact that the right hand side of a kinetic differential equation is linear in the rate constants, whereas the second one uses the technique of neural networks. This second one is discussed deeply and its advantages, disadvantages and conditions of applicability are analyzed in the mirror of the first one. Numerical analysis carried out on practical models using simulated data, and our programs written in Mathematica.

In this paper a new mobility management is introduced. The main idea in this approach is that the... more In this paper a new mobility management is introduced. The main idea in this approach is that the mobil node should manage the mobility for itself not the network. The network nodes provide only basic services for mobile entities: connectivity and administration. We construct a framework called the Client-based Mobility Frame System (CMFS) for this mobility environment. We developed the CMFS protocol as a solution over IPv4 and we show how to use Mobile IPv6 to realize our concept. We propose some basic mobility management solutions that can be implemented into the mobile clients and give details about a working simulation of a complete Mobility Management System. Example mobility management approaches such as the centralized-and hierarchical-or cellular-like ones are also defined and hints are given what kind of algorithms might be implemented upon the Client-based Mobility Frame System over IPv4 and IPv6 as well. We introduce some example algorithms that can work with the CMFS making mobility management efficient by minimizing signalling load on the network. In the present work modeling and detailed discussion on the parameters of the algorithms is given and comparison to existing mobility approaches and protocols is done. We prepared a simulation to test our protocol and to back up the proposals we provide the reader with simulation results. We stress that still one the most important benefit of our findings is that all the MNs can run different management strategies and can optimize mobility for themselves.

The motivation behind this work is to provide a mathematical statistical theory and computational... more The motivation behind this work is to provide a mathematical statistical theory
and computational algorithms to estimate certain parameters in dynamical
models of various kinds. The main problems originate from biological,
chemical models and from telecommunication network technologies.
In case of telecommunication networks, quality of service problems is a
top priority issue. There are several mechanisms to address these and one
fundamental component in many of them is the logic that determines the
rate of the signaling or packet flow. The mathematical problem here is to
estimate the intensity of a stochastic point process.