DE19914254C2 - Method for establishing a telephone connection with a dual-mode mobile radio telephone for GSM and DECT operation - Google Patents

Description

The invention is based on a method for building a telephone connection with a dual-mode mobile phone serves, according to the preamble of claim 1, as it from the WO 98/35515 and from the same priority DE 197 45 350 C1 is known. This procedure leaves both to the caller incoming and outgoing calls, the choice of whether he wants to make calls in the mobile network, or in the fixed network via a cordless connection and a relay station.

To enable a convergence of the fixed network and the mobile network current efforts include a dual To create fashion device that alternatively in a GSM mobile radio network or via a DECT connection in a fixed network is logged in, it is always the same number can be enough. This requires cross-network handing over the booking and the ongoing conversation to organize. You also need tariffs and billing modalities would be adapted between the networks. Details about this are the handbook of Franz Arnold (ed.) "Handbuch der Te communication ", chapter 3.4.1.2, and chapter 5.2.8.0 to take. DE 43 43 335 A1, DE 197 05 793 C2 and DE 196 18 531 C1 discuss specific questions regarding the required com Communication between landline and mobile network in the frame this concept to the mobility of dual-mode cellular to ensure the device. DE 197 05 794 C1 has the Organisa tion of call diversions to reach a device for ge object that is only mobile in a fixed network.

Based on this, the task arises, which is stated at the beginning bene procedure, the choice between a cellular network and a landline connection to the caller and no cross-network organizational structures to operate of the dual-mode cellular phone requires, with regard to to further develop wider application options and Use of a mobile phone and a relay station in the To specify within such a procedure.

This object is achieved with the method according to claim 1 or the uses according to claims 5 and 6 solved.

On the one hand, the claimed method makes the possibility possible opened, even then incoming discussions about a party network connection and to lead the relay station when the Anru it is not known at which relay station the dual-mode Device is currently logged in and which number this in Landline. There is an (automatic) information center for this who is able to determine an existing booking and then immediately establish the call if necessary.

It is a major obstacle to outgoing calls if, as in the publication mentioned at the beginning, the settlement of the Call charges via the landline connection of the relay station he follows. Even if the owner of this connection is often responsible for the Ge call fees will arise (at home, office) only then a free and further use of the in installed relay stations by any dual-mode hand-held device enables, if no longer the subscriber the invoice receives, but the owner of the handset. This is enough for example a single relay station to supply a house ses with several tenants, the z. B. from the home owner o which is also made publicly available by a telephone company can be.

The subclaims indicate embodiments of the invention.  

It is very cheap if the extension number for the cordless connection from the landline to the mobile phone number mer is used. Because this is the caller anyway knows, and then it is the without additional measures Telephone number for direct cordless connections in the area of Relay station, i.e. without a connection to the fixed network. The advantages this embodiment are in the aforementioned WO 98/35515 explained.

In Europe, an essential embodiment of the invention is that the Mobile network is a GSM network, the identification of the Owner of the mobile phone with the help of a SIM card follows, and that the cordless connection to the landline after DECT standard takes place.

International landline connections without knowledge of the stay stops of the called party are made possible by the off points of origin that lead to different networks in different countries belong to, their data regarding the currently logged in devices exchange with each other.

In the following an embodiment of the invention is closer explained.

The starting point is a dual-mode mobile phone that the Possibility offers that not only alternatively, but simultaneously a registration in a mobile network both under GSM is available, as well as a booking with a DECT relay station Connection to a landline. This requires that the device in these two operating modes under different numbers is achieved.

So z. B. the device under GSM under the D1 number
0049-171-1234567
be accessible if a corresponding D1 SIM card is inserted. In addition, e.g. B. in Berlin (area code 030) under the number 66554433 (landline connection) operated a DECT relay station, in which this device is also currently logged in. Here, the mobile phone number of the SIM card is used as a direct dial so that you have to choose for the landline connection:
030-66554433-0049-171-1234567

If instead z. B. an Austrian SIM card (GSM number z. B. 0034-667-7654321) is used, you can reach the device from Berlin in the landline as a local call
66554433-0034-667-7654321,
while the alternatively possible GSM connection here is a (expensive) international connection. It is up to the caller whether he wants to make a call in the fixed network or in the mobile network (using the mere mobile phone number), and he will do so according to the criteria "quality" and "price". However, for a landline connection, he must know where the conversation partner is, ie with which DECT station his device is connected; however, this is often known (at home, office, hotel, etc.).

The main advantages for the participant are:

• - Only one handheld device must be carried for both operating modes;
• - Accessibility even where GSM reception is not possible;
• - usually better quality of the connection with DECT; and
• - Lower costs, mostly in the fixed network, but also cheap internal GSM connections are possible.

The use of such a cellular phone is expanding potential, if you also call it can, if the location of the called party and thus the The caller does not know the first part of the landline number is, but only the second part, d. H. the mobile phone number as Extension. In this case, it is additionally necessary that the missing part of the phone number at a festival information desk network is determined. This information point need to be up to date all existing DECT bookings are communicated, so asked accordingly and then the conversation can be forwarded. The inquiries are self-directed  automatically automatically when the caller uses the mere cellular dials the number in the fixed network to which the information desk is assigned, i.e. in Germany after using the corresponding 010xx prefix. Is none at the information desk Information about an existing DECT booking available, this is how a GSM connection is established.

In order to give the caller the opportunity, at least one Establish a GSM connection if he wants to (e.g. with Lei tion disturbances in the fixed network), it can be provided that with a control character (e.g. "#") at the end of the number it is shown that the information services are not used should be taken. It is also possible that an automatic cost comparison for calling such dual-mode Devices performed and then the cheaper connection (with or without "#") is selected.

The information center can connect to other similar ones Have information centers of other networks and with this data exchange, especially with foreign networks, so that too There landline connections after a mere choice of mobile radio phone number are possible. In this case, the additional costs, as usual with international GSM connections, the Called to be imposed. Therefore, the data exchange only include the data of such registered devices for which the corresponding billing is possible. This informa tion is part of the registration process for the mobile phone the DECT station on the SIM card and together to be sent to the information center with the remaining data.

For outgoing calls, the owner of the cellular phone fons also the choice between the networks. But he can too have an automatic cost comparison carried out, e.g. B. with the help of an appropriate facility at DECT Station, z. B. it is taken into account that the SIM used Card belongs to a foreign network, which, as mentioned, in the general to higher call charges in the mobile network  leads. And here too it can be provided that the automatic Preference of the cheaper network is switched off.

For the rest, measures must be taken that if a connection in the selected network is missing due to a lack of registration is not possible, at least one connection in the other Network and thus in the other operating mode of the dual-mode device is built up.

The call charges for one go from the cellular phone de DECT connections are in the state mentioned at the beginning the technology to the owner of the landline connection provided that operates the DECT station. This is for many users cases unfavorable, because it leads to the fact that this owner only very limited legitimacy to use his station for outgoing calls issued, e.g. B. if he also In has the handset (more precisely: the SIM card) (at home), if the interview is carried out on his behalf (office), or if he can get the call charges back (Ho tel).

Instead, according to another aspect of the invention, for the billing of outgoing DECT calls the identity of the Determined by the user of the handheld device, d. H. it becomes the data used, which are stored on the SIM card. these are in particular the mobile phone number, as well as other identity features, or z. B. the amount of a prepaid continent gents on call charges. This data is transmitted via the Transmit the DECT channel to the billing center of the fixed network gen. - In the same way for other fee-based Ge proceeding talks, e.g. B. when arriving, via the Information desk arranged international calls for which the An caller only pays the domestic fees.

The character of the SIM card as a universal identity card This is comparable to a credit card expanded. The landline call via DECT is in this view  wise an achievement, which the cardholder with the help of his Mo bilfunktelefons requests and their costs - until the end debit of his account - are automatically settled can.

It is only this type of billing that makes DECT stations possible operate publicly for outgoing calls, e.g. B. on train Höfen, in the sense of a "telepoint", ie a public DECT Telephone booth.

Most important technical advantage of the claimed process: It the use of intelligent networks (IN) is not required, as is the case in Arnold's font for a get-together game of DECT and GSM is considered necessary.

But it can be an important feature that with IN technology to be realized, also in the claimed method are reproduced, namely the automatic network change while a connection is in progress: Field strength, so if a participant z. B. from his Moving location can be an automatic call transfer from DECT to GSM (less often vice versa) when two dual-mode devices of the type used here together who are connected. This is done in such a way that a paral lele GSM connection is established, during the conversation partner does not initiate "busy", but the DECT call be will end. In this way, an interruption of the conversation can be avoided which would otherwise occur if one of the participants left the DECT reception area even further away. This option can also be used when the DECT connection of the two dual-mode devices initially operated privately passed DECT relay station and therefore free of charge was.

Claims (6)

1. A method of establishing a telephone connection with a cellular phone for dual mode operation, the

• - A circuit for a first operating mode with means for com communication according to a standard for a cellular mobile network and
• a circuit for a second operating mode with means for communication according to a standard for cordless communication via a relay station and a public landline network,

wherein identifying the device comprises

• - That the mobile phone is assigned a mobile phone number, on the basis of which it is identified in the first operating mode,
• - And that the mobile phone is identified in the second mode by means of a second number, which has as a component
• a first part, which is assigned to the connection of the relay station in the fixed network,
• - and a second part, which is an extension number denoting the mobile radio telephone,

and wherein the ready state of the mobile radio telephone comprises before the establishment of a connection,

• - That for a connection in the first operating mode, a Einbu chung of the mobile phone in the mobile network,
• - That for a connection in the second mode of operation Einbu chung the mobile phone at the relay station,
• - The extension number is assigned to the mobile phone as part of this registration,
• - and that both bookings can exist at the same time,

characterized by

• - That an information point of the fixed network start and end of the registration of the mobile phone at the relay station are gemel det
• - wherein the reporting of the start of a registration includes that
• - the mobile phone number of the mobile phone,
• - the number of the connection and
• - the extension number is transferred to the information center,
• - and on the basis of the messages, a list kept in the information center is updated which indicates which dual-mode mobile telephones identified by their mobile phone number are currently registered with which relay station,
• - That if a Mobilfunkkrufnum mer is selected in the area of the fixed network, which is entered in the list, on the basis of this entry
• a connection is switched via the fixed network to the connection of the relay station,
• - the extension number of the called mobile radio telephone is transmitted to the relay station,
• and a connection to the mobile radio telephone is established in the second operating mode by the relay station,
• - And that for the purposes of billing the charges for such connections that are carried out from the mobile phone in the second mode and are subject to charges, in particular outgoing calls to the fixed network, data that the owner of the mobile phone or a holder assigned to it Identify account to be sent from the mobile phone via the relay station to a billing center of the fixed network.

2. The method according to claim 1, characterized in that the extension number with the mobile phone number via agrees that the cellular phone for its first mode assigned. 3. The method according to claim 1 or 2, characterized in

• - That the mobile network and the mobile phone work in the first operating mode according to the GSM standard,
• - That the owner of the mobile phone is identified by means of a SIM card which is inserted in the mobile phone and thereby assigns a mobile phone number to the mobile phone,
• - And that the relay station and the mobile phone work in the second operating mode according to the DECT standard.

4. The method according to any one of claims 1 to 3, characterized in

• - That information centers of other networks each keep a list that specifies which are identified by their mobile phone number th dual-mode mobile telephones with which relay station are currently registered, and
• - That the information contained in the lists is exchanged and updated between the networks in order to enable cross-network fixed network connections, in particular international connections.

5. Use of a dual-mode mobile radio telephone for GSM operation and DECT operation within the scope of the method according to claim 3 using a SIM card inserted into the mobile radio telephone, characterized in that

• - That it transmits the SIM card assigned mobile phone number to the relay station when logging in to a DECT relay station and
• - That it builds a DECT connection outgoing from the mobile phone into the fixed network data that are registered on the SIM card and identify their owner or an account assigned to this owner, transmitted in DECT mode to a billing center from the fixed network.

6. Use of a DECT relay station as part of the method according to claim 3, characterized in that

• - That it transmits the associated mobile phone number to an information point of the fixed network when booking a dual-mode mobile phone for GSM and DECT operation and
• - That it, when a outgoing connection from the mobile phone to the fixed network is established, transmits data identifying the holder of the SIM card inserted into the mobile phone or an account associated with this owner to a settlement office of the fixed network.