Satellite and next generation networks: proposal for QoS architectures (original) (raw)
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Satellite and next generation networks: QoS issues
2005
Broadband satellite systems will need specific functions and interfaces in order to fit seamlessly into an endto-end Next Generation Network (NGN) Quality of Service (QoS) architecture. This paper will define NGN overall architecture, showing how the coupling between Application/session layers and Network/transport layers can achieve end-to-end QoS support. Possible integration scenarios of satellite access into such architectures will be depicted, with a special emphasis on transparent and regenerative satellite architectures based on DVB-RCS [14] type of access.
Computer Networks, 2005
4 Full integration of satellite technology in future terrestrial infrastructures requires support for high-quality broadband bi-directional communications. Research efforts in the field of satellite communications are currently oriented in the study of QoS-aware solutions for DVB-S and DVB-RCS which allowed seamless deployment in the Internet. In this paper, the QoS architecture designed in the framework of the SATIP6 project, sponsored within the 5 th EU Research Programme Framework, is presented, along with the implemented demonstrator and the obtained results. The QoS architecture is organized into two main modules, the Traffic Control and Access Control modules, whose aims are (i) to provide for differentiated service of conveyed IP flows and (ii) to achieve efficient utilization of uplink bandwidth respectively. Experimental results obtained through the developed hardware demonstration platform are reported and discussed to assess the effectiveness of the designed solution in terms of both service differentiation and efficient utilization of satellite resources.
QoS Architecture over DVB-RCS satellite networks in a NGN framework
2005
Geostationary satellite networks are currently considered as one of the most promising broadband access network technology for narrowing the digital divide. Though technically attractive and cost effective, the provisioning of endto-end QoS services in satellite access remains largely undefined.
2005
4 Full integration of satellite technology in future terrestrial infrastructures requires support for high-quality broadband bi-directional communications. Research efforts in the field of satellite communications are currently oriented in the study of QoS-aware solutions for DVB-S and DVB-RCS which allowed seamless deployment in the Internet. In this paper, the QoS architecture designed in the framework of the SATIP6 project, sponsored within the 5 th EU Research Programme Framework, is presented, along with the implemented demonstrator and the obtained results. The QoS architecture is organized into two main modules, the Traffic Control and Access Control modules, whose aims are (i) to provide for differentiated service of conveyed IP flows and (ii) to achieve efficient utilization of uplink bandwidth respectively. Experimental results obtained through the developed hardware demonstration platform are reported and discussed to assess the effectiveness of the designed solution in terms of both service differentiation and efficient utilization of satellite resources.
A qos architecture for dvb-rcs next generation satellite networks
EURASIP Journal on Wireless …, 2007
The standardization of a return channel via satellite (DVB-RCS) and satellite community efforts in term of interoperability over the last few years leads to quite a positive outcome: geostationary satellite networks are intended to provide broadband access to interactive multimedia services in low-infrastructure areas. However, in order to take in account real-time multimedia traffic, an efficient resource management scheme is still necessary to maximize the scarce uplink capacities usage. To address this capacity issue, this paper proposes a complete DVB-RCS QoS architecture that is implemented, thanks to an emulation platform, and evaluated with real multimedia applications. This paper first gives an overview of the QoS architecture usually used in DVB-S/RCS satellite system, especially in layers 2 and 3. It then introduces the satellite system emulation used in the experimentation and its calibration. The main contribution of this work focuses on the signaling principle designed to allow applications to take benefit from the QoS features of the satellite system even if they are non-QoS aware. It is then shown how signaling in such QoS architecture allows the user to change dynamically the QoS of his application using QoS agent and QoS server applications even if the application is not QoS-aware. It is also given quantitative results related to such a dynamic QoS change in the experiments done on the satellite emulation system.
A Packet Handling Scheme for QoS Support in an Integrated Satellite/Terrestrial System
2002
Since the Internet is today a sort of global multiservice network, a key consideration is support for services with guaranteed quality of service. The challenging objective of this paper is to propose a possible architecture to support Internet QoS-sensitive services (video-conferencing, voice over IP, web browsing,...), thus providing users with end-to-end QoS guarantees. A new hybrid Intserv/Diffserv scheme for handling IP packets by supporting QoS over an integrated, multi-segment network is here presented. It is implemented via a suitable QuAlity of service Support Module (QASM). The main advantages and drawbacks of QASM are discussed and the impact on both system architecture and Multi Mode Mobile Terminal is investigated. Performance evaluation, carried out via computer simulations, confirm the effectiveness of the proposed solution.
Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137), 2000
Absrrucf -The paper presents an experimental approach to provide a guaranteed Quality of Service (QoS) over a satellite network based OD the Internet Protocol (IP). The results obtained represent part of the experimental activity carried out during the second year of the Project "Integration of Multimedia Services on Heterogeneous Satellite Networks", called 'ASI-CNIT Project". Both subjective metrics as Mean Opinion Score (MOS) and objective metrics, as video and voice packet loss, jitter and transmission rate have been used to investigate the topic and to get proper configurations able to guarantee an high quality of service perceived by the users (PQoS -Perceived Quality of Service). The Integrated Services approach along with the Reservation Protocol (RSVP) has been chosen to reserve the network resources. The measures reported have been obtained by real operative sessions.
Quality of Service guaranteed voice and video services over satellite networks
The aim of the paper is to present a network solution to provide Quality of Service (QoS) guaranteed voice and video services over a satellite test-bed based on the TCP/IP protocol suite. The scope of the solutions proposed is a small private satellite network where specific services (e.g. tele-education) are offered to the users.
Broadband satellite multimedia
IET Communications, 2010
The Broadband Satellite Multimedia (BSM) architecture standardised by ETSI defines a Satellite Independent Service Access Point (SI-SAP) interface layer that separates the satellite independent features of the upper layers from the satellite dependant features of the lower layers, and provides a mechanism to carry IP based protocols over these satellite dependent lower layers. This enables interoperability at the IP layer between satellite systems of different physical and link layers technologies that fully comply with the SI-SAP concept. This paper reviews past and current standardisation activities including the BSM QoS architecture, security architecture, network management that have been carried out by the ETSI TC-SES/BSM working group and looking into the future to extend current SI-SAP functions that can enhance existing QoS provision and security management capabilities as well as proposing a mobility management architecture that complies with the IEEE 802.21 MIH framework to support BSM mobility and to allow integration of satellite networks with fixed and mobile network infrastructures. A service-based network management architecture is also proposed to allow management flexibility and integration of business and operation support functions, paving the way for satellite integration into the Internet of the Future.