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Many wireless systems used by military ground personnel are satellite based. This paper explores a hybrid system that benefits from both satellite and terrestrial wireless technologies while overcoming the limitations of each. We present the architecture, describe the merits, and then explain the essence of the system: IP Flow mobility. After introducing this concept, we describe some of the important...
The desire for satellite-based airborne communications on the move (COTM) has been an emerging trend in recent communication systems. This has been true for both DoD and Civilian systems being deployed. Early implementations of COTM have mostly been focused on the Land-Mobile environment, but this is starting to broaden into other domains as well. There is burgeoning domestic and international interest...
The Mobile User Objective System (MUOS) is the next generation Department of Defense (DoD) Ultra High Frequency (UHF) satellite communications (SATCOM) system that will provide the warfighter with modern worldwide mobile communication services, utilizing the code division multiple access (CDMA) waveform for use in the military UHF SATCOM band. In addition to providing point-to-point capability between...
Department of Defense (DoD) satellite systems and the networks they provide access to, have evolved over the years to support the “net-centric” vision of a joint and interoperable end-to-end communications solution for the deployed tactical satellite communications (SATCOM) user. Although great strides have been made in reaching the net-centric goal, full DoD SATCOM Internet Protocol (IP) convergence...
In this paper, for the sake of better global coverage, we introduce a novel triple-layered satellite network architecture including Geostationary Earth Orbit (GEO), Highly Elliptical Orbit (HEO), and Low Earth Orbit (LEO) satellite layers, which provides the near-global coverage with 24 hour uninterrupted over the areas varying from 75° S to 90° N. On the basis of this architecture, we propose a QoS-aware...
On-Board Processing (OBP) technology has been already in the satellite scene for almost two decades. It has been a difficult path and for a long time considered an added but expensive value brought to the satellite payload. Today, it is a commercial and competitive reality. In the case of Thales Alenia Space (TAS), a new generation of OBP solutions are available to satisfy the always more demanding...
Dynamic topologies and constrained recourses are two main characters of satellite networks. These characters require a specialized and efficient routing algorithm. In this paper, a QoS routing algorithm based on PEC multi objective optimization method is proposed to find paths that satisfy all user QoS requirements efficiently. A new routing scheme is also developed to reduce the computing load in...
High latency network is increasingly important in today's telecommunication world. It is widely used for real-time interactive multimedia applications such as video, music, data and graphic files exchange. One example of this network is the satellite communication technology. Unfortunately, the high latency satellite network provides limited network bandwidth and introduces high network latency issues...
The future development of broadband satellite systems providing services based on the Internet protocol (IP) needs to be stimulated by means of common standards. This paper presents the ETSI BSM PEP terminal architecture and PEP usage scenarios. In addition this paper shows the benefits of cross-layer improvements, where the TCP traffic sent by STs through an NCC/Gateway that acts as a PEP-spoofer...
In this paper we propose a hybrid radio access network architecture that aims to connect remote areas to broadband networks. The proposed architecture consists in a WiMAX network for final users which hence can be connected to the internet backbone. In the other hand the WiMAX base stations are connected via the satellite to the wired network to circumvent mobility and long distance issues. To allow...
This paper describes issues related to the integration of IMS and DVB-RCS satellite networks. DVB-RCS is studied as an access network variant for IMS in addition to the already known cellular, wireless and cable access networks. Although combining IMS and DVB-RCS seems a practical solution for communication and content delivery several issues must be addressed in order to make the integration effective...
Satellite based TCP/IP internetworks are logical extensions of terrestrial based internetworks and rapidly gaining interest in both commercial and military applications. Suitable network management systems (NMS) tools and techniques are vital in deploying and maintaining such networks effectively. We discuss the management challenges associated with a satellite based TCP/IP internetwork and provide...
Services and agencies continue to deploy IP SATCOM systems while awaiting migration to the joint IP modem (JIPM). As the JIPM nears production, challenges such as establishing responsibility for development of a common end user terminal, satellite and hub resource allocation and management, and long term sustainment for the end-to-end SATCOM infrastructure must be addressed. Currently, the DoD gateway...
Satellite communications are experiencing a renewed interest. This paper deals with possible cross-layer approaches requiring a modification of protocol layers in the design phase as well as new dynamic interactions and adaptations. An IP satellite network has been considered that is based on the DVB-S2/-RCS standard where, according to the BSM protocol architecture, the SI-SAP interface and related...
The approach currently being taken by ETSI (BSM) in defining future open standards for network management architecture for IP-based broadband multimedia satellite systems is described. This work has recently begun and the final objective is to arrive at a consensus for an architecture which meets the requirements of compatibility and interworking with external networks (e.g. within the NGN) and is...
Todaypsilas mobile satellite systems are built to support a packet switched all IP communications infrastructure based on IP multimedia subsystem (IMS) leveraging the benefits of solutions already available in terrestrial networks. IMS technology provides a SIP based open platform that enables operators to introduce multimedia applications quickly and in a cost effective manner. Although IMS is very...
Due to exponential increases in internet traffic, Active Queue Management (AQM) has been heavily studied by numerous researchers. However, little is known about AQM in satellite networks. A microscopic examination on queueing behavior in satellite networks is conducted to identify problems with applying existing AQM methods. A new AQM method is proposed to overcome the problems and it is validated...
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