AROMA - Advanced resource management in service integrated multilayered HFC access networks
| Beneficiary: | Bruno Wenk |
| Organisation / Company: | HTW Chur, 7004 Chur, Switzerland |
| Project Duration: | 01.03.1998 - 29.02.2000 |
| Contribution BBW/OFES: | CHF 280'290.- |
| Project-Number: | BBW 97.0600-2 |
| Project Partners: | Alcatel SEL AG (D); Rechenzentrum Universität Stuttgart (D); National Technical Unversity of Athens (EL); Centro de Estudos Comunicaoes (P); Instituto de Engenharia de Sistemas e Computadores (P); Communication Technology Laboratory (CH); TV CABLU (RO) |
The project demonstrates how intelligent resource management can provide end-to-end quality of service (QoS) in a heterogeneous network environment consisting of a hybrid fibre coax (HFC) access network as a shared medium, an SDH/ATM core network with ATM signaling (ITU-T Q.2931) and Internet including Differentiated Services) (DiffServ). The main issue of the project is the smooth end-to-end operation of IP based applications and native ATM applications using different types of protocols for the guarantee of QoS. In particular the HFC network segment requires novel methods of resource management by means of signaling between the user terminals and a legacy ATM switch via an HFC specific management unit.
The AROMA project has developed and demonstrated these novel approaches.
The IKT Chur has been contributing to the specification of an ATM programming interface in accordance with the ATM Forum semantic description of a native ATM API (Application Programming Interface) and to the implementation of a native ATM protocol stack for the development of applications with very different requirements for bandwidth allocation and quality of service, especially dynamic bandwidth provision and low latency:
- Review of communication APIs, especially CAPI (Common ISDN Application Programming Interface), as a basis for the specification of the native ATM API.
- Essential contributions to the specification for a native ATM protocol stack.
- Essential contributions to the implementation of the specified native ATM protocol stack.
- Implementation and test of the control plane functions of the Native ATM Application Programming Interface (NAAPI).
- Design of the application framework and a sample speech application.
- Realisation of an integrated services framework based on NAAPI through implementation of components with frequently used functions.
- Implementation of a (simple) native Voice over ATM application which will be extended with the support of supplementary services based on the session initiation protocol (SIP).
- Design and implementation of an ATM signaling test program which can be used to test the signaling functionality within the HFC access network.
3. Nov. 2006, BWe
