Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Patent
1998-02-20
2000-12-26
Le, Thanh Cong
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
435445, H04B 700
Patent
active
061672645
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a mobile communications system employing a so-called multi-numbering scheme, i.e. different subscriber numbers for different teleservices of the subscriber.
In addition to conventional data transmission, modern mobile communications systems provide the subscribers with a variety of data transfer features. The services provided by the mobile communications systems may generally be divided into Teleservices and Bearer Services. A bearer service is a telecommunication service that allows transmission of signals between user-network interfaces. An example of bearer services are modem services. In a teleservice, the network also provides terminal equipment services. Examples of major teleservices, in turn, are speech, telefax and videotext services.
One mobile subscriber may typically have a right to different teleservices and bearer services, which are herein generally referred to as basic services. The subscriber may have an access e.g. to speech, telefax and data services. A mobile-terminating or mobile-originating call may thus require any of these basic services, for which reason the correct service must be addressed to the mobile communications network. E.g in the pan-European GSM mobile communications system GSM, call set-up signalling transmitted by a mobile station contains information on the required basic service in a specific Bearer Capability Information Element BCIE. The mobile network may thus choose the appropriate basic service for the mobile-originating calls. Calls received from an ISDN (Integrated Services Data Network) also contain a similar information element that indicates the service required. In case a call originates from or is routed via the public switched telephone network (PSTN), however, information on the type of the call will not be transmitted to the mobile communications network. In such a case, the network should be informed some other way which basic service the call requires.
A prior art solution to the above problem is a Multinumbering Scheme, in which a mobile subscriber has a number of directory numbers corresponding to the number of services to which he wishes to receive incoming calls. A directory number is also termed as a Mobile Subscriber ISDN Number (MSISDN). A subscriber may have a directory number e.g. for a speech service, a telefax service and a modem service. In accordance with the Multinumbering Scheme, a calling subscriber dials the directory number of the mobile subscriber according to the desired service. In the pan-European mobile communications network, the services of the subscribers are determined in a subscriber's home location register HLR, in which other subscriber information is also stored permanently. The HLR is also used for storing information on the mapping between the directory numbers and the services of the subscriber. In the HLR, a specific BCIE element indicating the type of a call and the network resources required for the call is also linked with the directory number (MSISDN). A BCIE is described e.g. in GSM Recommendation 04.08, version 4.5.0, pp. 423-431. The HLR also contains an IMSI (International Mobile Subscriber Identity) which is used within the GSM network. A mobile subscriber has only one IMSI, which is common to all the basic services.
The GSM system also has another location register, a visitor location register VLR, into which part of the subscriber data stored in the HLR is copied when the subscriber is located within the area of the VLR.
FIG. 2 illustrates call set-up of a mobile-terminating call in the GSM mobile communications system employing a multinumbering scheme. In step 1, the call arrives at the first gateway MSC (GMSC) of the network. The GMSC will send a routing information request (message 2) to the HLR of the subscriber, said HLR being determined on the basis of the directory number MSISDN of the subscriber. Along with the routing information request message 2, the MSISDN of the subscriber (and possibly ISDN BCIE+HLC+LLC) is also transmitted. In connectio
REFERENCES:
patent: 5400390 (1995-03-01), Salin
patent: 5806000 (1998-09-01), Vo et al.
patent: 5987323 (1999-11-01), Huotari
European Telecommunication Standard, GSM 02.02, Sep. 1994 European digital cellular telecommunications system (Phase 2), pp. 1-13.
European Telecommunication Standard, GSM 02.03, Sep. 1994 European digital cellular telecommunications system (Phase 2), pp. 1-21.
European Telecommunication Standard, GSM 04.04, Sep. 1994 European digital cellular telecommunciations system (Phase 2), pp. 1-12.
European Telecommunication Standard, GSM 04.08, Version 4.21.0, Jan. 1998, pp. 423-431.
European Telecommunication Standard, GSM 09.02, Version 4.9.0, p. 286.
European Telecommunication Standard, ETS 300 102-1, Dec. 1990, Integrated Services Digital Network (ISDN), pp. 1-213.
Mouley et al., The GSM System for Mobile Communications, Internation Standard Book No.: 2-9507190-7, pp. 216-259.
Palviainen Keijo L T
Salin Hannu-Pekka
Cong Le Thanh
Nokia Telecommunications Oy
LandOfFree
Methods for processing an outgoing and an incoming call in a mob does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods for processing an outgoing and an incoming call in a mob, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for processing an outgoing and an incoming call in a mob will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1004795