Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1996-10-15
1998-12-15
Urban, Edward F.
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
455414, 455418, H04Q 738
Patent
active
058506039
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates generally to a telecommunications system, and then more particularly to a telecommunications system which is adapted to subscriber-related mobile apparatus.
Even more particularly, the invention relates to the provision of improved conditions in digital GSM (Group Special Mobile) systems which when necessary will enable service facilities to be increased or decreased in respect of one or more supplementary services, and also each "new" supplementary service to be added readily to a number of existing services.
It also lies within the scope of the present invention to introduce (and, of course, when necessary to remove a service) a new known supplementary service which has not earlier been used in the telecommunications system concerned and also the introduction of a completely "novel" supplementary service which although not known and applied at the present time can well be required in the future to cover requirements that will then prevail.
DESCRIPTION OF THE BACKGROUND ART
As illustrated in FIG. 1 of the accompanying drawings, a GSM-type digital telecommunications systems, to which the present invention refers, includes a number of mobile subscribers of which one or more of said mobile subscribers or apparatus (MS, Mobile Station) is/are in radio connection with a nearby base station transceiver (BTS) which, in turn, is connected for coaction with a base station controller (BSC).
A base station system (BSS) thus includes in addition to base station transceivers (BTS) for receiving and transmitting radio messages a base station controller which is a node and controls the necessary radio connections.
A base station controller may serve a selected number of transceivers (BTS), each of which, in turn, may serve a number of mobile subscribers (MS). Each station controller (BSC) is connected to a local mobile services switching centre (MSC) which includes a visitor location register (VLR).
The register (VLR) of each switching centre (MSC) coacts with either one or more similar switching centres (MSC/VLR) and one or more superordinate units or home location registers (HLR).
In a GSM system of the aforedescribed kind, each base station system functions, among other things, to handle the radio resources required for setting-up and releasing connections to mobile subscribers (MS) and their associated apparatus located within the area covered by the base station system (BSS).
Since the GSM system is known to the art and is extremely complex, the system will not be described in more detail in this document, although those parts of the system which are included by the invention will be described in more detail.
It can be mentioned, however, that information relating to all and each subscriber, with or without an activated supplementary service, is stored and sorted in the memory of the aforesaid home location register (HLR) and immediately a switching centre (MSC/VLR) indicates through a base station controller belonging to the switching centre that a "new" visitor subscriber (MS) has entered its area, the switching centre (MSC/VLR) requests for a copy of the information concerning this subscriber stored in the home location register (HLR), via its base station system (BSS).
Such a copy is sent over a standard MAP protocol or a special protocol to each switching centre that requests for information, and is stored in the centre in a known manner.
The GSM system also enables respective mobile subscribers to send requisite information and data in the form of subscriber data structured in accordance with a predetermined protocol (different from the MAP protocol) to a nearby receiver/transmitter (BTS) and also to the base station controller coacting with said transceiver (BTS), said controller informing the superordinate switching centre (MSC/VLR) of the wishes of the mobile subscriber.
Certain categories of the transmitted subscriber data are observed and processed in the switching centre (MSC/VLR) while other categories are transmitted directly to the superordinate unit
REFERENCES:
patent: 5142654 (1992-08-01), Sonberg
patent: 5408419 (1995-04-01), Wong
patent: 5579375 (1996-11-01), Ginter
"Architecture of Cellular Networks and Example of Intelligent Networks", Revue HF Tijdschrift, vol. 18, No. 1, pp. 37 to 43 (1994), by Arnoul Vanwelsenaers et al.
Lantto Jorgen
Rex Lars Thomas Gunnar
Telefonaktiebolaget LM Ericsson
Urban Edward F.
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