A satellite mobile system integrated with the terrestrial cellular network (original) (raw)
Integration of mobile satellite and cellular systems
By integrating the ground based infrastructure component of a mobile satellite system with the infrastructure systems of terrestrial 800 MHz cellular service providers, a seamless network of universal coverage can be established. Users equipped for both cellular and satellite service can take advantage of a number of features made possible by such integration, including seamless handoff and universal roaming. To provide maximum benefit at lowest posible cost, the means by which these systems are integrated must be carefully considered. Mobile satellite hub stations must be configured to efficiently interface with cellular Mobile Telephone Switching Offices (MTSO's), and cost effective mobile units that provide both cellular and satellite capability must be developed.
PERFORMANCE STUDY OF AN INTEGRATED SATELLITE/TERRESTRIAL MOBILE COMMUNICATION SYSTEM
International Journal of Satellite Communications, 1996
Terrestrial cellular networks and mobile satellite systems are expected to converge towards a future integrated satellite/terrestrial mobile communication network. Besides a system globalization, the integration of terrestrial and satellite mobile systems will lead to the unloading of the fixed part of the mobile network. This paper proposes an integrated satellite/terrestrial mobile communication system and evaluates its performance in terms of the blocking probability for new call attempts, the call dropping probability and the probability of unsuccessful call. This communication system was simulated and its performence compared with that of a stand-alone terrestrial mobile system. In the terrestrial part of the system we have considered fixed channel allocation (FCA) and dynamic channel allocation (DCA) techniques. Satellite channels can have equal or lower priority compared to terrestrial channels. The improvement of the system performance by means of satellite-to-terrestrial handovers was also estimated.
The GSM procedures in an integrated cellular/satellite system
Selected Areas in Communications, …, 1995
In an integrated cellular/satellite system for mobile communications a satellite subsystem cooperates with a terrestrial cellular network for providing user services. The paper addresses the problems related of the reuse of the procedures of the GSM cellular standard in an integrated system, allowing at most changes only at the mobile terminal and/or in the satellite network. The results of the study show that most of the GSM procedures can be reused in an integrated system (in a few cases with limited protocol variations) but some others would require modifications to the cellular network. The results of this study shall also be useful for the suitable definition of the protocols of an integrated satelliteherrestrial system for the next generation of mobile and personal communication services.
13th International Communication Satellite Systems Conference and Exhibit
The current scenario in Europe is of a well defined Pan European digital cellular system together with several proposals for land-mobile satellite systems.The integration of a satellite system with the terrestrial system has obvious advantages.This paper investigates the possible synergy of a land mobile satellite system with the Pan European terrestrial digital cellular system.A possible integrated system architecture using the main functional blocks of the terrestrial system is proposed.Alternative satellite systems have been examined and a likely implementation scenario. based on the foreseeable development in the region,has been suggested.
Utilizing Satellite Systems for Mobile Communications: An Emerging Approach
2009
The future trends of technologies are to achieve all systems in an integrated global one that offers all the services in a simple way. The proposed mobile communications over satellite is an advanced technology that used the facilities and benefits of both systems to achieve competitive services. The proposed system concentrated on a global system that served the entire world and gives some specialization and privacy for each country. This paper attempts to show how to implement mobile communications over satellite systems in an efficient, flexible, and cost-effective manner.
Network design consideration of a satellite-based mobile communications system
1986
The concept o f mobile communications via a geosynchronous satellite has been proposed in recent years. Twelve companies have filed applications with the Federal Communications Commission to offer nationwide Mobile Satellite Services (MSS). Chis paper addresses several technical issues related to MSS from the network design point o f view. MSAT-X, which stands for the Mobile Satellite Experiment, is the task assigned to the Jet Propulsion Laboratory by the United States National Aeronautics and Space Administration to develop low-cost, spectral-efficient, satellite-based mobile communications technologies for 1990's. A1 though the discussions and recommendations presented in this paper are 1 imi ted to MSAT-X, technologles developed under MSAT-X may be o f the utmost importance to the first generation MSS. with the National Aeronautics and Space Administration.
Architecture and networking issues in satellite systems for personal communications
International Journal of Satellite Communications, 1994
The paper expands on some specific aspects of personal communications via satellite, often-although not necessarily-envisaging extensive use of 'small' satellites, using orbits not necessarily coinciding with the geostationary one (36,000 km), but rather at 1OOO-11,OOO km altitude. One key point to be borne in mind is the issue of internetworking between satellite and terrestrial systems. Network integration should be carefully implemented in order to comply with ITU future public land mobile telecommunication systems (FPLMTS) requirements, also accepted in the European Telecommunication Standards Institute (ETSI) universal mobile telecommunication systems (UMTS). In addition to some insight into the technology of small satellites and associated orbits, architectures and networking aspects of most relevant systems providing personal communication services (PCS) are addressed in some detail, and potential applications highlighted. Frequency spectrum allocation is addressed in the light of the 1992 World Administrative Radio Conference (WARC-92). taking into account also multiple access problems and regulatory issues such as Federal Communications Commission (FCC) licensing and spectrum sharing debates. Some remarks on critical technologies and cost conclude the paper.
Satellite systems for personal communication networks
Computer Standards & Interfaces, 1999
The paper addresses some issues related to Satellite Personal Communication Networks (S-PCNs). The role of satellite communications in that scenario is discussed, and some characteristics of S-PCNs are identified. In addition, the problem of the integration of S-PCNs with the Universal Mobile Telecommunication System (UMTS) is considered. In this respect an original methodology for accomplishing such integration is proposed; such methodology aims at avoiding complex protocol conversions at the interfaces between the terrestrial and the satellite segment. The paper is partly based upon the work performed by the authors in the framework of the European Community INSURED Project "INtegrated Satellite UMTS Real Environment Demonstrator".