DE4324094A1 - Mobile radio process and mobile subscriber radio telephone terminal to carry out the process - Google Patents

Description

The present invention relates to the Field of mobile radio telephony. So far you have proposed two solutions: cellular telephoto phonie and short-range telephony.

Cellular telephony

A cellular telephony network that communicates with the public Lichen telephone network is connected terrestrial structure or infrastructure that from a collective of commutation centers is, each of which is a collective based stations or radio connections that this Structure are assigned. In the GSM network (group Spezial-Mobil) is a base station BTS (base Transsiver station) to a movable commutation center MSC (mobile switching center) via one Base controller BSC (base site controler) connected,  which is common to several base stations, namely just like one MSC commutation center Basic BSC controllers can be assigned together. Another cellular telephony network is known e.g. B. the GSM network 1800, the Radiocom network 2000, the SFR network (Societe francaise de radio telephone).

The radio connections form the centers of one Collective of cells that, as far as the fran concerns cesian territory, tightly knit are organized and cover the entire territory.

The user of a cellular telephony network, that is, the owner of a terminal or one mobile telephone device, can be local Change position completely. Auto follows him matically a commutation center that knows in which cell he is in to send to him forward incoming calls or calls. It is the localization function of such a network, which uses ver different procedures is carried out.

The range of the base stations is sufficient large, and the radio frequencies of two neighboring ones Cells and sometimes even several others two cells must be separated be sufficiently different from each other to To avoid interference.

With regard to this requirement regarding frequencies and localization procedures, the burden on the overall balance is the operation of a cellular telephone network is very complex. However, it has the for the participants Mobility advantage.  

Short-range telephony

A short-range telephony network, also with connected to the public telephone network a collective of controller centers (CG), of which each to a collective of connection units (URB) is connected, each to a group of radio connections is connected. This Connections are in the public area directions (train stations, major roads crossings,. . . ) or private institutions (Factories, houses,....) Attached.

This is known as a short-range telephony network second generation wireless radio network, namely the Pointel / CT2 network and the DECT network (Digital European Cordless Telephone) known. The Above-mentioned designations CG and LIRB are in the remaining ones of the Pointel network. The empire width of the connectors is very small in sizes order of some 100 meters, and the users can only use their mobile terminal in the immediate vicinity Use near a connection. The entire Territory is far from being covered; extensive zones are not covered. The Nah area telephony offers versus cellular Telephony a reduced offer. It is ge have been created because of cellular telephony follow the small number of available frequencies and the telecommunications traffic to be operated requirements cannot meet.

A short-range telephony network does not guarantee the permanent localization function. When a Eyeing user, long enough by means of manual operation and a so-called regis  procedure in the vicinity of a connection remain, he can become aware of the connection procure and forward the for him request specific incoming calls. In the In practice this is the case with the Pointel network Connection unit that controls the connection which carries out the registration, the affected Controller center is informed of this.

In short-range telephony, one therefore has for opted for a small number of frequency channels, since there is no connection from one connection to another Interference gives what a cheap use he but possible with the disadvantages of a small one territorial coverage goes hand in hand and that Forced to stay near a port.

In short, cellular telephony and short-range telephony has both its advantages and their disadvantages.

The object of the present invention is to achieve this based on a mobile telephony method create which depending on the circumstances the advantages of the two telephony methods, namely cellular and short-range telephony, in abstains.

In order to solve this task, this is inventive appropriate mobile radio procedures for optional further direct calls between a public Telephone network and a variety of mobile part subscriber telephone connections, that the optional forwarding of calls via both connections of a cellular telephone network as well as connections of a short-range telephone network is feasible, and that in the case of a part  leaving the subscriber line first the Contact with a local area phone connection attempted, and that if accepted, it is suggested the call as a short-range Carry out a telephone call, the subscriber making the Wahl has to confirm this proposal, him to reject the call as cellular telephoto perform phonat, or to place the call.

According to another invention is preferably before seen that when there is no contact through a Nah area phone connection is accepted there it is proposed to frame the outgoing call of cellular telephony, the Participant has a choice between accepting the Carrying out the call under the cellular Telephony or the abandonment of the call.

The method according to the invention is consequently a mixed method of cellular and short-range telephony in accordance with the organization chart of FIG. 1, which offers a user the essential advantage of a communication that is cheaper in accordance with the original conditions, by using one or the other of the two networks, with the aim of is to handle an incoming call over short-range telephony, that is, the cheaper solution, and only in the absence of short-range telephony over cellular telephony.

Near a short-range phone line you will use it if you don’t has special intentions; otherwise you will be over go through the cellular telephony network.

It should be noted that the proposal of the next routing a call from a terminal  with close-range connection both visually and can be performed audibly.

In an interesting embodiment of the inventive method can also and alternatively automatically the telephony mode can be selected depending on the availability of the frequency channels, however below the control of the participant who selected the Mode may or may not confirm, for example as by pressing a button or other equivalent controls.

It can be seen that in case of use, regardless of whether manual or automatic, is advantageous., "a priori" the simplest and Choosing the cheapest mode, namely Manual operating mode. If the user is in is close to a short-range connection, it will therefore change the mode of short-range Select telephony, accepting it animals, separated from the cellular telephony network to be, and vice versa. For certain categories from users this is sufficient; it can be users for whom only outgoing calls are interesting, that is for those whose schedule is routinely is cut, and for example in their Flat or in her office calls over the Nah area network, and between their Apartment and their office on the cellular network.

In the case of one arriving at a terminal Call made "a priori" in cellular mode unless the user is close "register" a short-range connection, the call mode is displayed to the terminal user,  so that he can accept it knowing the cause or possibly refuse, and above all to him indicate whether it is close-range mode acts so that it does not move too far may.

With regard to incoming calls, it is advantageous depending on the mode of the surveillance radio procedure and periodically and alternatively the Channels of the cellular network and those of the Local area network, thanks to the Fact that the current procedures of Modes of operation of mobile communications, which are around cellular telephony or near-range Telephony can act discreetly and not continuous monitoring without notice or Allow loss of display.

If in a listening phase during either of the two Modes a relevant hint (incoming or outgoing call) in the respective listening mode the monomod regulated terminal switches then automatically switch to the respective mode, whereby each arriving in the other of the two modin Notice until return to monitoring mode is masked.

Monitoring is absolutely not incompatible with the registration procedure of short-range telephony. However, if a user chooses a short-range Connection registers, and if its terminal is switched to cellular mode every incoming call that is ultimately answered by the Short-range connection is presented, covered or masked.

At the end of a communication in one of the two modes, and to return to the monitoring mode, and according to the organization chart of FIG. 2, the network masked during the communication of the other of the two modes being considered as such, in which the terminal is inoperative, the terminal advantageously registers itself in this masked network using the appropriate method, which is the registration procedure in accordance with the Pointel short-range telephony and the IMSI procedure (International Mobile Subscriber Identity) as an attachment to the GSM cellular telephony.

It may also be interesting that two Communications in both cellular and Close-range modes are toggled back and forth, such as in human-relationships RNIS machine. If communication in one Mode expires, remains a terminal that is higher is equipped with high-quality radio contact to the different mode. It makes him one hand allows an incoming call in the other Mode to catch, and on the other hand not to risk its registration in the other Losing mode. So if an incoming Call suddenly arrives in the other mode, the user can receive it, giving the maintains ongoing communication to them after and thus resume afterwards. It deals is a simultaneous or bimode control, and in contrast to the monomode control, which above in connection with the surveillance radio and the Switching the terminal into a mode where, as far as surveillance is concerned, this is always bimod.

The target for using short-range telephony  network, preferably over the cellular Telephony network is relatively easy with the reach outgoing calls. As far as it is however, regarding the incoming calls is hers "A priori" mode of the initiative of the caller let's either have a number in the cellular Telephone network or a short-range number Phone network dials that are different from each other are.

The invention provides a mobile Assign a single phone number to the terminal and the infrastructures of the two networks unite incoming call optionally according to the Requirements through one of the two networks to be led, but with a preference for the short-range telephone network.

This further goal is achieved in that one of the commutation centers of the cellular network to at least one control center of the short-range network, with a interstructural connection by using the Registration procedure regarding the short-range Systematic and preferably auto telephony performing mathematically, and by making a cellular and short-range mix participants first as one Subscriber of the local area network so that every incoming call from a caller Control center of the short-range network reached.

If, with reference to the organization chart of FIG. 3, the subscriber is registered in the vicinity of a connection unit, the control center routes an incoming call there before the connection is established. In the opposite case, the controller center of the local area network queries the cellular network via the constructive connection, which can confirm that the subscriber exists and is located, so that in this case the call is always transmitted to the subscriber's base station and the connection is established. In the opposite case, the call is given up.

As a variant, the controller center could be a copy of the subscriber register of the cellular network hold, and instead of querying the cellular Network in the event that the participant is not in appears in the register, the controller center could the local area network the call directly to the base station of the cellular network, the interstructural connection only serves the Bring the register up to date or work up.

The invention further relates to a mobile Participant radio telephone terminal for implementation of the invention claimed above Telephony method containing an antenna, a Radio stage, a baseband stage, a central unit and a unit of task organs, this Terminal is characterized in that the Central unit is able to do both cellular and short-range modes back and forth going to go.

The central unit is preferably able to:

• - a surveillance radio and a periodic and alternate listening to the channels of the two networks to guarantee,
• - the procedures of an automatic registration carry out  
• - Detect the short-range telephony signals.

A mixing stage is preferably provided in order to the separation of cellular telephone channels and the To effect short-range telephone channels, the Radio level a short-range telephony transmitter / Includes receiver and a transmitter and one Cellular Telephony Receiver.

The invention will now be described with reference on the drawings based on the description of several embodiments of the mobile subscriber Radio telephone terminals explained:

Fig. 1 is an organization chart of treatment levels of outgoing calls according to the inventive method;

Fig. 2 is an org chart of treatment levels of the incoming calls by means of surveillance function according to the inventive method;

Fig. 3 is an org chart of automatic routing levels of incoming calls according to the inventive method;

Fig. 4 shows an organizational diagram of the mixed infrastructure of cellular and short-range telephony to describe the terminal according to the Invention;

Fig. 5 shows the schematic structure of the embodiment of the terminal for simultaneous operation;

Fig. 6 shows the schematic structure of the embodiment of the terminal for the single mode use, and

Fig. 7 shows an organization chart of the automatic registration procedure.

The (radio telephone) terminal described below serves to further develop a GSM network infrastructure 2 and CT2 pointel network infrastructure 3 if necessary and only by way of example in the case of a mixed infrastructure 1 of cellular telephony and short-range telephony.

The GSM network 2 is connected to the commutated public RTC telephone network 4 via one or more MSC centers 5 , each of which controls a collective of BSC controllers 6 , each of which in turn controls a collective of BTS stations 7 which the terminal can directly communicate with.

The Pointel network 3 is connected to the RTC network 4 via one or more control centers 8 , each of which controls a collective of connection units 9 , each of which in turn controls a collective of connections 10 with which the terminal comes into direct communication can.

The two GSM and Pointel networks 2 and 3 are directly connected to each other by a connection 11 , in the present case of type X25, between a co-mutation center 5 and a control center B. As a variant, the two centers 5 and 8 could also be integrated into a single center.

It can be seen that such a connection structure would enable the subscriber terminal to answer only a single mixed call number, and to leave it to the infrastructure to route the incoming calls preferably optionally via the pointel network 3 according to the circumstances.

According to Fig. 5 includes the subscriber terminal 12, an antenna 13, a mixer 14, a radio stage 15, a baseband stage 16, a central processing unit 17 and a unit of object organs 18, wherein the entirety of which is powered by a battery 19.

The antenna 13 is common to both types of cellular and short-range telephony due to the proximity of the GSM and Pointel frequencies. It is an antenna for the frequency band 864-960 MHz. An antenna for the frequency of 1800 MHz can also be common to the GSM 1800 and DECT types.

Mixing stage 14 separates the GSM and Pointel channels and controls the radio stage. It contains three filters, namely a first filter 20 for the Pointel channel for the frequency band of 864-868 MHz, a second filter 21 for the transmission of the GSM channel for the frequency band of 590-915 MHz, and a third filter 22 for the reception of the GSM channel for the frequency band of 935-960 MHz. The radio stage 13 comprises a Pointel transmitter / receiver 23 , a GSM transmitter 24 and a GSM receiver 25 .

In the GSM mode, the switching or Connections in duplex mode with a frequency for  sending out and a different frequency for that Reception, while in the Pointel mode the Connections or exchanges in time Duplex operation at a single frequency occur.

The baseband stage 16 with a Pointel circuit 26 and a GSM circuit 27 ensures a double function. When transmitting, they convert the information to be sent out from the central unit 17 into rasters defined by the GT2 and GSM standards, which are intended to modulate the transmitters 23 , 24 . Upon receipt, they pull out the rasters received by the receivers 23 , 25 and convert them into information and information that can be used by the central unit 17 .

As connected to the central unit 17 task organs there is a digitizing / dedigitizing circuit 28 , a noise unit 29 , a display device 30 , a keyboard 31 and a mode key 32 .

The central processing unit 17 directs and controls the Aufgabeorgene 28-32, it controls the CT2 and GSM types of procedure, and it provides the coordination of the two cellular telephony and short-range species safe, as illustrated in particular by the organization charts of Figures 1-3. is.

The display device 30 , the keyboard 31 , the mode key 32 and the noise unit 29 form a participant terminal interface common to the two types or modes.

The central unit ensures the compression / decompression of the voice from or to the digitized form of the signal of a microphone or loudspeaker connected to the circuit 28 .

As a variant it should be mentioned that the compression / Decompression also using a separate Circuit could be done, except that it is not provided at all if the networks transmit analog tones.

From the above description it can be seen that with the two CT2 and GSM modes two calls can be controlled alternately or simultaneously. It is the central unit 17 that controls the two channels simultaneously according to the CT2 and GSM operating methods. In the idle state, the central unit 17 receives information about the power received in particular from the nearest base station 7 via the GSM channel and responds to its requests (incoming calls). As far as the CT2 channel is concerned, the central unit 17 also checks the channels in search of incoming calls.

The above description shows that the controller only monomod by surveillance radio and periodic and alternate listening to the channels of the two Networks could be done.

In this case, the two channels, as described above, can be retained in the terminal, whereby as a variant and in the concern for cost reduction, only a single channel common to both modes can be left without a mixing stage and with a conventional radio stage 15 'And a conventional baseband stage 16 ' ( Fig. 6).

It is recalled that the selection of cellular telephony mode or short-range telephony mode can be done automatically or manually by pressing mode button 32 . Even in the case of manual selection, the central unit continues to offer the advantage of its usual ergonomics.

In general, it can be said that if a telephone subscriber intends to remain in the vicinity of a connection 10 of the Pointel network 3 , he triggers the registration procedure by hand.

From the above description it follows that the appointments themselves in the monomode mode of operation before the reset in the surveillance radio and at the end of a conversation in cellular mode automatically switches to the local area network.

It has also been seen that in the case of automatic control of the incoming calls with a preference for the local area network, the registration procedure becomes systematically initiated as a result of the central unit 17, regardless of the respective mode.

Referring to the organization chart of FIG. 7, the central unit 17 of the terminal 12 , as soon as it is energized, checks for the presence of pointel signals which are or are not intended for it (in the vicinity of a pointel connection 10 , radio traffic is rarely zero). As far as the central unit 17 detects such signals, it is assumed that the subscriber is in the vicinity of a connection 10 , and that the last record ( 40 ) of the subscriber is still valid.

If the Pointel signals during a certain period of time ( 46 ), e.g. B. after a minute, ver disappear, a contact attempt ( 41 ) is carried out with the connection before the central unit. In the event of a termination, the terminal will consider that the registration may have been deleted ( 42 ).

In this latter case, the central unit 17 goes into an interrogation or listening position for new Pointel signals. If new pointel signals reappear in permanent form ( 43 ), for example for one minute, an experimental registration ( 41 ) takes place.

In the event of a non-permanent recurrence ( 44 ), the automatic registration procedure as inopportun is not retried (for example, the subscriber can switch to a connection on board a vehicle).

If the central unit 17 detects pointel signals which concern the terminal 12 and indicate that the registration has not been lost, for example by receiving an incoming call ( 45 ), the central unit returns directly to the registration state ( 40 ).

Claims (18)

1. Mobile radio method for the optional forwarding of calls between a public telephone network ( 4 ) and a plurality of mobile subscriber telephone connections ( 12 ), characterized in that the optional forwarding of calls via both connections ( 7 ) of a cellular telephone network ( 2 ) also connections ( 10 ) of a short-range telephone network ( 3 ) is feasible, and that in the event of a subscriber line ( 12 ) leaving a call, contact with a short-range telephone line ( 13 ) is first attempted, and that if this is accepted it is proposed to make the call as a short-range phone, the subscriber having the choice of confirming this suggestion, rejecting the call, making the call as a cellular phone, or abandoning the call. 2. Mobile radio method according to claim 1, in which, if no contact is accepted by a short-range telephone connection ( 10 ), it is proposed to make the outgoing call in the context of cellular telephony, the subscriber having the number between the acceptance of the implementation the call in the context of cellular telephony or the task of the call. 3. The method according to any one of claims 1 and 2, optionally the telephony mode is automatic Kind as a function of the availability of frequency channels or according to the control of the Participant.   4. The method of claim 3, wherein when the subscriber is in the vicinity of a short-range connection ( 10 ), he can select the short-range telephony mode by hand. 5. The method according to any one of claims 1 to 4, the call mode is displayed to the subscriber, around this mode knowing its cause too accept. 6. The method according to any one of claims 1 to 5, in which according to a surveillance radio and a periodic and alternative listening to the channels of a cellular network ( 2 ) and the channels of a local area network ( 3 ) can be carried out. 7. The method of claim 6, wherein when an event occurs during a listening and a monomode control phase, which falls under the listening mode in question, the subscriber line ( 12 ) is automatically switched to the envisaged mode. 8. The method according to any one of claims 6 and 7, wherein at the end of a connection according to one of the two modes and before returning to the monitoring state, the subscriber line ( 12 ) can be registered in the network of the other of the two modes. 9. The method according to any one of claims 1 to 8, the if a connection in either of the two Modes, namely short-range telephony or cellular telephony Maintain radio contact in the other mode becomes.   10. The method according to any one of claims 1 to 9, in which the cellular network ( 2 ) and the local area network ( 3 ) are connected to one another. 11. The method of claim 10, wherein, when a subscriber is registered in the local area network (3), an incoming call to the subscriber is supplied through the short-range network (3), while otherwise the local area network (3) interrogates the cellular network (2) . 12. The method according to claim 16, wherein a directory of the participants in the cellular network ( 2 ) in the local area network ( 3 ) is brought up to date. 13. subscriber mobile radio terminal for performing the method according to any one of claims 1 to 12, including an antenna ( 13 ), a radio stage ( 15 ; 15 '), a baseband stage ( 16 ; 16 '), a central unit ( 17 ) and one Unit ( 18 ) of task organs, characterized in that the central unit ( 17 ) is designed in such a way that it can carry out the two cellular and short-range modes back and forth. 14. Terminal according to claim 13, wherein the central unit ( 17 ) is set up in such a way that it can carry out a surveillance radio and periodic and alternative listening to the channels of the two networks ( 2 , 3 ). 15. Terminal according to one of claims 13 and 14, in which the radio stage ( 15 ') and the baseband stage ( 10 ') are common to the two modes. 16. Terminal according to one of claims 13 and 14, wherein a mixing stage ( 14 ) is provided to ensure the separation of the cellular telephony channels and the short-range telephony channels, the radio stage ( 15 ) being a short-range telephony transceiver ( 23 ) and a transmitter ( 24 ) and a cellular telephony receiver ( 25 ). 17. Terminal according to one of claims 13 to 16, wherein the central unit ( 17 ) is able to perform procedures of automatic registration. 18. Terminal according to claim 17, wherein the central unit ( 17 ) is able to detect short-range telephony signals.