Temat: IMS - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Survey of NGN migration profiles deployed by selected carriers in Europe, North America and Asia
Autorzy:: Michalski, W.
Powiązania:: https://bibliotekanauki.pl/articles/308118.pdf
Data publikacji:: 2008
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: NGN
IMS
softswitch based solution
NGN migration strategies
network evolution
Opis:: The paper presents the alternative migration profiles to next generation carrier network architecture. It describes the paths of development of fixed public network in- frastructure for five selected service providers. The carriers are selected as being in advanced stage of migration towards NGN. Moreover, examples of varying strategies ranging from full PSTN replacement and NGN overlay to constructing an NGN network from the ground up as well as examples of various migration strategies, especially based on IMS and softswitch solutions are presented.
Źródło:: Journal of Telecommunications and Information Technology; 2008, 3; 60-64
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Approximation of message inter-arrival and inter-departure time distributions in IMS/NGN architecture using phase-type distributions
Autorzy:: Kaczmarek, S.
Sac, M.
Powiązania:: https://bibliotekanauki.pl/articles/308647.pdf
Data publikacji:: 2013
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: call processing performance
IMS
message interarrival time distributions
message inter-departure time distributions
NGN
phase type distributions
traffic model
Opis:: Currently it is assumed that requirements of the information society for delivering multimedia services will be satisfied by the Next Generation Network (NGN) architecture, which includes elements of the IP Multimedia Subsystem (IMS) solution. In order to guarantee Quality of Service (QoS), NGN has to be appropriately designed and dimensioned. Therefore, proper traffic models should be proposed and applied. This requires determination of queuing models adequate to message inter-arrival and interdeparture time distributions in the network. In the paper the above mentioned distributions in different points of a single domain of NGN are investigated, using a simulation model developed according to the latest standards and research. Relations between network parameters and obtained message inter-arrival as well as interdeparture time distributions are indicated. Moreover, possibility of approximating the above mentioned distributions using phase-type distributions is investigated, which can be helpful in identifying proper queuing models and constructing an analytical model suitable for NGN.
Źródło:: Journal of Telecommunications and Information Technology; 2013, 3; 9-18
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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