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MANAGEMENT OF SERVICE ACCESSIBILITY AT GEOPOLITICAL AND OTHER SYSTEM BOUNDARIES IN A MOBILE SATELLITE RADIOTELECOMMUNICATION SYSTEM

IP.com Disclosure Number: IPCOM000008555D
Original Publication Date: 1998-Mar-01
Included in the Prior Art Database: 2002-Jun-24
Document File: 2 page(s) / 109K

Publishing Venue

Motorola

Related People

Johanna A. Wild: AUTHOR

Abstract

Satellite radiotelecommunication systems have large and constantly moving cells compared to the small and fixed coverage areas in a terrestrial wire- less communication system. The satellite coverage areas cannot be shaped to map existing geographical entities as governed by particular sets of political, regulatory or business policies. Nevertheless, the network needs to enforce such rules based on the subscriber location. In this paper system, relevant areas governed by particular sets of rules will be called Service Control Areas (SCA).

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Technical Developments

MANAGEMENT OF SERVICE ACCESSIBILITY AT GEOPOLITICAL AND OTHER SYSTEM BOUNDARIES IN A MOBILE SATELLITE

RADIOTELECOMMUNICATION SYSTEM

by Johanna A. Wild

ABSTRACT

  Satellite radiotelecommunication systems have large and constantly moving cells compared to the small and fixed coverage areas in a terrestrial wire- less communication system. The satellite coverage areas cannot be shaped to map existing geographical entities as governed by particular sets of political, regulatory or business policies. Nevertheless, the network needs to enforce such rules based on the subscriber location. In this paper system, relevant areas governed by particular sets of rules will be called Service Control Areas (SCA).

  Subscribers located at the border between such areas need to be handled according to border rules agreed upon by the neighboring parties,

  This paper describes a method to locate the subscriber when he accesses the network, to detect a subscriber located at a border between service control areas (e.g. different geographical entities governed by different set of rules or different gate- ways servicing areas) and to proceed according to the predefined set of rules agreed upon by the neighboring parties and stored in a system global database.

LOCATION BASED SERVICE ACCESSIBILITY IN A MOBILE SATELLITE COMMUNICATION SYSTEM

  The access of a mobile subscriber to the net- work in a satellite communication system is granted by the network at the time of the access attempt

based on these subscriber location, the subscriber access data stored in the subscriber terminal and a global system access database. The access request is routed by the space network to the subscriber's home gateway. The location of the subscriber is determined using data provided by the terminal and by the satellite.

  The accuracy of the location determination is lower than in a terrestrial wireless system. The network determines if the mobile subscriber is located in a system relevant border area (e.g. Figure 1).

SERVICE ACCESSIBILITY MANAGEMENT AT SYSTEM RELEVANT BORDER AREAS

  Depending on the set of rules pertinent to this border area and the information provided by the mobile subscriber in the access request, the home gateway triggers a limited number...