Next Generation Satellite Broadband for enabling Universal Service Commitment (original) (raw)
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New generation satellite broadband Internet services: Should ADSL and 3G worry?
2013 Proceedings IEEE INFOCOM, 2013
In the context of Internet access technologies, satellite networks have traditionally been considered for specific purposes or as a backup technology for users not reached by traditional access networks, such as 3G, cable or ADSL. In recent years, however, new satellite technologies have been introduced in the market, reopening the debate on the possibilities of having high-performance satellite access networks.
Broadband Satellite Communications for Internet Access
2004
Part Two , consisting of chapters 6-9, addresses major technical challenges in designing and deploying satellite IP, ATM, and future MPLS networks. The emphasis is on the link layer and above. The physical layer details have been addressed extensively in the literature. The first three chapters of this part deal with technical challenges at various layers. The physical layer, link layer-media access are covered in Chapter 6; satellite IP at network layer, satellite TCP at transport layer with Performance Enhancing Proxies (PEPs) in Chapter 7; and satellite ATM with traffic management and congestion control and end-to-end security in Chapter 8. Chapter 9 provides a current status of standards and regulatory issues for satell ite networks. After descr ibing an overview of the principles of satellite networks and technical challenges for satellite network design in Part One and Part Two, a detailed description of satellite IP networks achieving QoS guarantees and performance is illustrated in Part Three. The purpose of this part is to provide satellite IP networks QoS performance models giving an understanding of the design aspects to be addressed for realization of a satellite network. In Chapter 10, QoS in satellite IP, QoS objectives, QoS architecture alternatives are discussed. Differentiated Services based QoS simulation models for TCP and User Datagram Protocol (UDP) traffic for Geostationary Earth Orbit (GEO) and Medium Earth Orbit (MEO) configurations using Analysis of Variation Techniques are provided in Chapter 11. In Chapter 12, performance of MPLS over a satellite network is described. Interactive multimedia over satellite using Multiple Frequency-Time Division Multiple Access (MF-TDMA) based and Code Division Multiple Access (CDMA) based return channel protocols are presented in chapter 13. Similar to the discussion on satellite IP performance models in Part Three , Part Four addresses satellite ATM networks identifying fundamental questions about buffer requirements, TCP/ATM , efficiency and fairness and multiple access modes in a quantitative way. This part is dedicated to simulation analysis of TCP performance and resulting QoS operating over satell ite links. Several proposals for improvements are compared. Chapter 14 provides QoS requirements for satellite ATM networks , and a simulation model for satellite ATM Unspecified Bit Rate (UBR) service. Chapter 15 develops a simulation model for TCP over satellite ATM for GEO, MEO and Low Earth Orbit (LEO) configurations. An analytical model for satellite ATM based Time Division Multiple Access/Demand Assignment Multiple Access (TDMA /DAMA) slot allocation for Constant Bit Rate (CBR) services is presented in Chapter 16.
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.
Realizing future broadband satellite network services
2002
ABSTRACT Future satellite communication systems proposed use geosynchronous (GEO) satellites, medium earth orbit (MEO), and low earth orbit (LEO) constellations. Most of the next generation satellite systems will use fast packet switching with onboard processing to provide full two-way services to and from earth stations. One of the major service drivers is a high data rate internet access carried over integrated satellite-fiber networks. Provisioning of quality of service (QoS) within the advanced satellite systems is the critical requirement.
QoS provisioning in converged satellite and terrestrial networks: A Survey of the State-of-the-Art
IEEE Communications Surveys & Tutorials, 2016
It has been widely acknowledged that future networks need to provide significantly more capacity than nowadays' ones in order to deal with the increasing traffic demands of the users. Particularly in regions where optical fiber are unlikely to be deployed due to economical constraints, this is a huge challenge. One option to address this issue is to complement existing narrow-band terrestrial networks with additional satellite connections. Satellites cover huge areas and recent developments have considerably increased the available capacity, while the cost are decreasing. However, geostationary satellite links have significantly different link characteristics than most terrestrial links, mainly due to the higher signal propagation time, which often renders them not suitable for delay intolerant traffic. This article surveys the current state-of-the-art of satellite and terrestrial network convergence. We mainly focus on scenarios in which satellite networks complement existing terrestrial infrastructures, i.e. parallel satellite and terrestrial links exist, in order to provide high bandwidth connections while ideally achieving a similar end user Quality-of-Experience as in high bandwidth terrestrial networks. Thus, we identify the technical challenges associated with the convergence of satellite and terrestrial networks and analyze the related work. Based on this, we identify four key functional building blocks, which are essential to distribute traffic optimally between the terrestrial and the satellite networks. These are the Traffic Requirement Identification function, the Link Characteristics Identification function as well as the Traffic Engineering function and the Execution function. Afterwards, we survey current network architectures with respect to these key functional building blocks and perform a gap analysis, which shows that all analyzed network architectures require adaptations to effectively support converged satellite and terrestrial networks. Hence, we conclude by formulating several open research questions with respect to satellite and terrestrial network convergence.
IEEE Communications Magazine, 1999
Self-similar processes based on fractal point processes (FPPs) provide natural and attractive network traffic models. We show that the point process formulation yields a wide range of FPPs which in turn yield a diversity of parsimonious, computationally efficient, and highly practical asymptotic second-order self-similar processes. Using this framework, we show that the relevant second-order fractal characteristics such as long-range dependence (LRD), slowly-decaying variance, and 1/f noise are completely characterized by three fundamental quantities: mean arrival rate, Hurst parameter, and fractal onset time. Four models are proposed, and the relationship between their model parameters and the three fundamental quantities are analyzed. By successfully applying the proposed models to Bellcore's Ethernet traces, we show that the FPP models prove useful in evaluating and predicting the queueing performance of various types of fractal traffic sources. 1 Throughout this paper, self-similarity refers to asymptotic second-order self-similarity [4], [13] unless otherwise defined.
Satellite and next generation networks: proposal for QoS architectures
Space communications, 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.
0 SATELLITE NETWORK AND QoS MODEL 2 . 1 Satellite Network Architectural Options
2000
Future satellite communication systems proposed use geosynchronous (GEO) satellites, medium earth orbit (MEO), and low earth orbit (LEO) constellations. Most of the next generation satellite systems will use fast packet switching with onboard processing to provide full two-way services to and from earth stations. One of the major service drivers is a high data rate internet access carried over integrated satellite-fiber networks. Provisioning of quality of service (QoS) within the advanced satellite systems is the critical requirement. In this paper, we present broadband LEO satellite network QoS model and simulated performance results. We discuss the TCP flow aggregates performance for their good behavior in the presence of competing UDP flow aggregates in the same assured forwarding. We identify several factors that affect the performance in the mixed environments and quantify their effects using a full factorial design of experiment methodology.
QoS MANAGEMENT FOR MOBILE SATELLITE COMMUNICATION
In this paper, a cross-layer architecture (QoSatAr) is developed to provide end-to-end quality of service (QoS) guarantees for Internet protocol (IP) traffic over the Digital Video Broadcasting-Second generation (DVB-S2) satellite systems. The architecture design is based on a cross-layer optimization between the physical layer and the network layer to provide QoS provisioning based on the bandwidth availability present in the DVB-S2 satellite channel. One of the most important aspects of the architecture design is that QoSatAr is able to guarantee the QoS requirements for specific traffic flows considering a single parameter: the bandwidth availability which is set at the physical layer (considering adaptive code and modulation adaptation) and sent to the network layer by means of a cross-layer optimization. The architecture has been evaluated using the NS-2 simulator.
IP with QoS guarantees via Geo satellite channels: performance issues
IEEE Personal Communications, Vol. 8, N. 3, pp. 14-19, 2001
The rapid proliferation of the Internet over recent years has roused the research community's interest in QoS guarantees to IP traffic. The integration of new satellite technologies with terrestrial broadband networks can provide worldwid reachability to a wide range of IP-based multimedia applications and services. Thus, a great deal of research is being conducted to extend IP technology with QoS guarantees to satellite links. The purpose of this article is to contribute to this issue. In fact, the main focus is on the satellite access network of an integrated terrestrial-satellite multimedia platform. In this scenario, effective solutions to transport real-time IP traffic with quality of service (QoS) guarantees are proposed, and their effectiveness is assessed. Real-time IP services with different traffic descriptors and delay requirements are considered, and therefore the best transport solution (in terms of guaranteed quality and efficiency in satellite resource utilization) over permanent or semi-permanent satellite connections is identified.