|
|
Connection simulation between master and end unit in passive optical networks
Moravcová, Klára ; Kočí, Lukáš (referee) ; Horváth, Tomáš (advisor)
The purpose of this bachelor’s thesis is to introduce and explain the standards of passive optical networks, their way of establishing connection between master unit and end unit in a network, as well as creating a working simulation in Matlab. The first chapter of this thesis covers the description of optical networks. In the chapter, individual layers of the GPON standard by ITU-T and the EPON standard by IEEE are described. The process of an ONU unit activation towards the OLT unit of these standards is covered in detail. The thesis describes the following standards: EPON, GPON, 10G-EPON, XGPON and NG-PON2. The practical part covers the simulations of the mentioned standards, which are displayed in the form of graphs. The results are interpreted through comparison of the graphs with various input parameters (number of connected ONU units and the length of the distribution network) with a final evaluation of these results.
|
|
|
Optical access network management
Bartko, Samuel ; Ružička, Michal (referee) ; Horváth, Tomáš (advisor)
This Bachelor thesis is concerned about optical access network in theoretical part, where it describes working principle of optical network. The main concern is put on passive optical networks, where it describes XGS-PON standard. In practical parts describes connection and making functional network with XGS-PON. In the last part there is a manual for laboratory task, which has a goal of making students understand the issue of activating end point unit in XGS-PON network.
|
|
|
Security Risks in Passive Optical Networks
Šimoník, Jan ; Jeřábek, Jan (referee) ; Horváth, Tomáš (advisor)
This diploma thesis deals with the historical development of passive optical networks, according to the standards that was defined by International Telecommunication Union (APON, BPON, GPON, XG-PON and NG-PON). Further, the thesis describes the security of passive optical networks, but also a security threats which the deployment and use of passive optical technology carry. In the introductory chapters of this thesis the passive optical networks are described. The following is a description of the standards of passive optical networks in terms of their historical development. The next part is dedicated to the security of passive optical networks and possible security threats. In conclusion a description of the practical part of this thesis is given -- rack assembly, which will serve for future testing. The basic configuration of the optical line terminations that are fitted in the rack is also described. The last part of this diploma thesis is dedicated to the testing of selected security risks, which was described in the theoretical part of this thesis.
|
|
|
Visualization communication between OLT and ONU units in NG-PON2 networks.
Ilgner, Petr ; Jurčík, Michal (referee) ; Horváth, Tomáš (advisor)
This bachelor thesis is concerned with passive optical networks, which provide solutions of access networks and have sufficient capacity for data-intensive services. The introductory section compares technologies of access networks and evaluates their qualities and usability. The following part focuses concretely on passive optical networks and their hardware. The next section introduces the passive optical network - NG-PON2 standard. The characteristics and principles of establishing a connection between subscriber unit and provider network interface. Further, there is description of the data structures in the network, service messages system and network security options. Special attention is paid to individual operating systems in the network. The practical part represents a design and implementation of visualization software, which displays the data communication between the units of the network.
|
|
|
Triple Play simulations for next generation networks
Sikora, Pavel ; Polák, Josef (referee) ; Horváth, Tomáš (advisor)
This thesis deals with XG-PON networks. It describes the parameters of the physical layer, its divisions and the branching possibilities. It also describes the transfer layer and its sublayers, discloses the activation process of ONU units when ONU unit connected to ODN. Finally, the thesis describes DBA algorithm including a detailed representation of a DBA algorithm reference model and a representation of the two DBA algorithms implemented in practice. Simulations of Triple Play services in the network with software NS-3 are also included. Simulations using simple DBA algorithm and GIANT algorithm. Thesis contains too modification of GIANT DBA decreasing data trasfer delay.
|
|
|
Influence of Dynamic Bandwidth Allocation over Optical Network Unit
Sikora, Pavel ; Oujezský, Václav (referee) ; Horváth, Tomáš (advisor)
This thesis deals with DBA algorithms used in XG-PON networks. It describes reference appearance of the DBA algorithm, as well as, three specific DBA algorithms discussed in professional articles. Particularly speaking about GIANT, HYRA and modified Max-Min Fair DBA. The thesis provides description of frames utilized by DBA algorithms in XG-PON networks, specifically XGEM frame and XGTC frames. The thesis also presents a simulation tester of DBA algorithms tested on a virtual XG-PON network. Finally, it contains the results of testing these DBA algorithms with a description.
|
|
|
Optical access network management
Bartko, Samuel ; Ružička, Michal (referee) ; Horváth, Tomáš (advisor)
This Bachelor thesis is concerned about optical access network in theoretical part, where it describes working principle of optical network. The main concern is put on passive optical networks, where it describes XGS-PON standard. In practical parts describes connection and making functional network with XGS-PON. In the last part there is a manual for laboratory task, which has a goal of making students understand the issue of activating end point unit in XGS-PON network.
|
|
|
Security Risks in Passive Optical Networks
Šimoník, Jan ; Jeřábek, Jan (referee) ; Horváth, Tomáš (advisor)
This diploma thesis deals with the historical development of passive optical networks, according to the standards that was defined by International Telecommunication Union (APON, BPON, GPON, XG-PON and NG-PON). Further, the thesis describes the security of passive optical networks, but also a security threats which the deployment and use of passive optical technology carry. In the introductory chapters of this thesis the passive optical networks are described. The following is a description of the standards of passive optical networks in terms of their historical development. The next part is dedicated to the security of passive optical networks and possible security threats. In conclusion a description of the practical part of this thesis is given -- rack assembly, which will serve for future testing. The basic configuration of the optical line terminations that are fitted in the rack is also described. The last part of this diploma thesis is dedicated to the testing of selected security risks, which was described in the theoretical part of this thesis.
|
|
|
Influence of Dynamic Bandwidth Allocation over Optical Network Unit
Sikora, Pavel ; Oujezský, Václav (referee) ; Horváth, Tomáš (advisor)
This thesis deals with DBA algorithms used in XG-PON networks. It describes reference appearance of the DBA algorithm, as well as, three specific DBA algorithms discussed in professional articles. Particularly speaking about GIANT, HYRA and modified Max-Min Fair DBA. The thesis provides description of frames utilized by DBA algorithms in XG-PON networks, specifically XGEM frame and XGTC frames. The thesis also presents a simulation tester of DBA algorithms tested on a virtual XG-PON network. Finally, it contains the results of testing these DBA algorithms with a description.
|
|
|
Triple Play simulations for next generation networks
Sikora, Pavel ; Polák, Josef (referee) ; Horváth, Tomáš (advisor)
This thesis deals with XG-PON networks. It describes the parameters of the physical layer, its divisions and the branching possibilities. It also describes the transfer layer and its sublayers, discloses the activation process of ONU units when ONU unit connected to ODN. Finally, the thesis describes DBA algorithm including a detailed representation of a DBA algorithm reference model and a representation of the two DBA algorithms implemented in practice. Simulations of Triple Play services in the network with software NS-3 are also included. Simulations using simple DBA algorithm and GIANT algorithm. Thesis contains too modification of GIANT DBA decreasing data trasfer delay.
|
guest ::
