The general objectives of this project have been:
The evolution of existing broadband satellite systems towards an NGN infrastructure will be crucial for the successful integration of the satellite systems in the new “converged telecommunication scenario”. SLA management plays a key role in provisioning value-added IP services over Next Generation Networks. This study introduces SLA management procedures in the next generation of satellite systems.
The evolution of existing satellite systems towards NGN infrastructure is a key element in the integration of satellite into new “convergence” concept.
One of the main objectives of the NGN is to provide quantitative end-to-end QoS guarantees to individual multimedia services / applications over a multitude of network technologies on the end-to-end path (including both access and core networks). This requires a big effort taking into account the specific features and constraints of satellite networks compared to terrestrial networks. SLA management is one of the essential aspects to be studied.
This convergence provides new business models and services for the satellite industry. The results from this project attempt to move Satellite Access Networks (SAN) to NGN, to clearly identify the necessary changes to perform SLA management over SAN as any other transport network.
In NGN one can distinguish four major actors: access network, core network, service provider network and end user. The roles in the transport plane suggest that NGN may include both access networks and core networks. Satellite networks, are typically used as access network.
The ensemble of roles associated with a target satellite network, in both service and transport planes, can be described as follows:
The relationships between various actors in NGN (and the roles they support) are captured in the model in the figure below, which also shows the cardinality between them. The model is a reflection of the basic NGN architecture, in the sense that it includes both core networks (one represented) and access networks.
The work to be done was performed over 12 months and was divided in six separate tasks:
The project was successfully completed on November 2009.
The main results achieved in Task 1 were:
In Task 2, the main achievements were:
In Task 3, a simulator tool has been developed to validate the NGSN functional system architecture. The simulator represents in a visual mode the main interactions, mechanisms and protocols required for SLA management between the functional entities distributed throughout this architecture.
The simulation campaign covered three Service Scenarios Use cases that correspond to those specified in Task 1 (Consumer Triple Play, Emergency, Mobility). One particular use case within each service scenario is selected to be represented in the simulator (e.g. Mixing of services use case from the Consumer Triple Play service scenario). This way, operators or holders can understand which services and which functionalities they can expect from these new models/functions.
The main achievements in Task 3 were:
Task 3 has developed a Simulator tool to According to the results, in Task 4/Task5 the following contributions have been provided:
The project Final Presentation was part of the “Satcom integration with Next Generation Networks using IMS” Workshop on the 5th November 2009.