Method for calling by a terminal, like a card controlled mobile

Details Method for calling by a terminal, like a card controlled mobile Method for calling by a terminal, like a card controlled mobile

1997-05-12

1999-09-21

Chin, Wellington

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455432, 455406, 455435, 455557, H04Q 720

Patent

active

059566531

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a method for calling by a terminal, like a card controlled mobile station, of a mobile communication system according to the preamble of the claim 1.
In the system a connection can be accomplished between two subscribers, at least two of which is a mobile terminal. In a mobile communication system a message transmission is two directional and therefore the connection is accomplished between a A-subscriber and a B-subscriber. In the mobile communication system the centre is informed all the time about the locations of those phones, to which a call can be routed. Normally a call to a phone is made to a phone such that the A-subscriber dials a telephone number. The centre transmits a signal to the telephone of the B-subscriber. Depending on whether the B-subscriber has answered, not answered, busy or off the call is switched when the B-subscriber answers. Generally the mobile communication systems includes mobile telephone stations, at least one base station, which is provided for communication with a mobile telephone by a radio channel, and which has of a limited coverage area, at least one mobile telephone centre, which is provided for mobile telephone services, and which is capable to be interactive with telephone switching centres or branch exchanges.
When a call is made by a digital mobile telephone, the telephone is controlled by a card inserted into the telephone and the subscriber is identified from the data of the SIM-card inserted into the terminal, which data include the international mobile subscriber identity IMSI. In the card-controlled mobile terminals the international subscriber identity is dependent on the card. Thus the subscriber is identified based on the data if SIM-card inserted into the mobile terminal but not on the terminal itself The SIM-card may be a circuit card mounted stationary at the terminal or a small card or a big card having a size of a credit card, at which is joined the small card, detachable from the mobile terminal.
The aim by the invention is that any normal mobile telephone subscriber could call both mobile calls ordinarily and as placed to a certain location calls as a local subscriber via the same mobile station equipment or by the same telephone equipment calls of two types, which can be separated in the charging or another corresponding facility
In order to accomplish the same the method according to the invention is mainly characterised in that presented in the characterising part of the claim 1.
New registers would not necessarily be needed in the mobile telephone centre. As a special embodiment a wireless local access could be accomplished, for which also a mobility is served as an additional feature. Further, as an advantage of the invention can be mentioned that the same is not bound with a network design, the same can be realised with low investments (no cable installations), because only the charging is renewed by utilising an ordinary method of chaining up. At the terminal side is not needed high investments. When desired a CT (wireless) telephone option can be joined with the terminal, whereby mobility is achieved also in the location where the device is placed. It becomes possible to serve to the telephone user more places, where different charges for example at home, summer residence etc. are possible compared with that when the mobile terminal is used as being detached from the device.
The invention is described in the following referring to the accompanying drawing, where
FIG. 1 illustrates the method according to the invention, where the mobile station is attached to the device,
FIG. 2 illustrates friction according to the invention, when the mobile station is detached from the device
In FIG. 1 the mobile station MS is attached to a teleterminal mediator, in the following the adapters for example via a serial gate. The SIM 1 of the adapter controls the mobile station via a bus thus accomplished. Then the mobile telephone subscriber is provided by local subscriber characteristics and the mobile station-teleterminal adapter as

REFERENCES:
patent: 5359182 (1994-10-01), Schilling
patent: 5428666 (1995-06-01), Fyfe et al.
patent: 5537474 (1996-07-01), Brown et al.
patent: 5657373 (1997-08-01), Hermansson et al.
patent: 5675628 (1997-10-01), Hokkanen
patent: 5729537 (1998-03-01), Billstrom

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