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:: Using JAIN SLEE as an Interaction and Policy Manager for Enabler-based Services in Next Generation Networks
Autorzy:: Tsietsi, M.
Terzoli, A.
Wells, G.
Powiązania:: https://bibliotekanauki.pl/articles/226904.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: service broker
SCIM
policy enforcer
NGN
IMS
JAIN SLEE
3GPP
OMA
Opis:: The IP Multimedia Subsystem is a telecommunications framework with a standard architecture for the provision of services. While the services themselves have not been standardised, standards do exist for basic technologies that can be re-used and aggregated in order to construct more complex services. These elements are called service capabilities by the 3GPP and service enablers by the OMA, both of which are reputable standards bodies in this area. In order to provide re-usability, there is a need to manage access to the service capabilities. Also, in order to build complex services, there is a further need to be able to manage and coordinate the interactions that occur between service capabilities. The 3GPP and the OMA have separately defined network entities that are responsible for handling aspects of these requirements, and are known as a service capability interaction manager (SCIM) and a policy enforcer respectively. However, the internal structure of the SCIM and the policy enforcer have not been standardised by the relevant bodies. In addition, as the SCIM and the policy enforcer have been defined through complementary yet separate processes, there is an opportunity to unify efforts from both bodies. This paper builds on work and standards defined by the bodies, and proposes the design of an interaction manager with features borrowed from both the SCIM and the policy enforcer. To help validate the design, we have identified a platform known as JAIN SLEE which we believe conforms to the model proposed, and we discuss how JAIN SLEE can be used to implement our ideas.
Źródło:: International Journal of Electronics and Telecommunications; 2010, 56, 2; 117-124
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Strategie migracji sieci telekomunikacyjnych w kierunku sieci NGN w wybranych krajach
Migration strategies of PSTN to NGN in selected countries
Autorzy:: Michalski, W.
Powiązania:: https://bibliotekanauki.pl/articles/317546.pdf
Data publikacji:: 2008
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: NGN
IMS
sieć użytku publicznego
sieć stała
sieć ruchoma
strategie modernizacji sieci
PSTN
fixed network
mobile network
network transformation paths
Opis:: Zaprezentowano kierunki rozwoju publicznych sieci stałych w czterech krajach, wyróżniających się stopniem zaawansowania działań związanych z transformacją sieci klasycznych (PSTN) w sieci NGN. Przedstawiono strategie informatyzacji sieci oparte na systemie IMS oraz na urządzeniach typu softswitch. Podano przykłady różnych rodzajów modernizacji sieci telekomunikacyjnych, od zastępowania istniejącej infrastruktury nowymi rozwiązaniami technicznymi do budowania nakładkowych sieci NGN.
In this paper, the directions of development of PSTN network in four countries are presented. The countries selected have the most advanced transformation process of their existing network to IP-based architecture. The possibilities of adoption of softswitch as well as IP multimedia system - based architecture solutions to transfer subscribers to IP-based session are discussed. Examples of alternative NGN migration paths ranging from PSTN replacement to NGN overlay are also presented.
Źródło:: Telekomunikacja i Techniki Informacyjne; 2008, 1-2; 51-57
1640-1549
1899-8933
Pojawia się w:: Telekomunikacja i Techniki Informacyjne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

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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