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Wyświetlanie 1-2 z 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
Artykuł
Tytuł:
A Hybrid Extension for IP Multicasting in Push-to-talk over Cellular Systems
Autorzy:
Gębarowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/226638.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Push To Talk (PTT)
PoC
OMA PoC
PTT
IMS
SIP
RTP
IP Multicasting
VoIP
Opis:
OMA Push-to-talk over Cellular (abbr. PoC or PTT) as an IP-based service can be considered the first Voice-over-IP technology delivered in a broad manner in cellular networks world wide. Two key differences between PoC and regular voice communication systems are its half-duplex nature, which converts it into 'walkie-talkie' style of service and ability to establish group sessions between large groups of participants. As a matter of fact, majority of available PoC solutions are inefficient in handling groups of large size because they rely on IP unicasting for delivering media streams. This introduces not only redundancy and greater packet loss, but also increases computational and transmission effort. This paper proposes a hybrid IP multicasting extension for Push-to-talk technology allowing to reduce group size limitation significantly and increase the performance of large scale Push-to-talk systems. The proposed enhancement is elaborated and verified basing on an automatic testing framework feedback and some statistical measurements.
Źródło:
International Journal of Electronics and Telecommunications; 2012, 58, 1; 77-83
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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