FR2847757A1 - Mobile telephone calls remote rerouting having mobile telephone caller rerouted calls register and rerouting calls different telephone number - Google Patents

Abstract

The mobile call routes calls to a register (HLR). The real mobile telephone called (alpha) is rerouted to a number (beta). Rerouting is carried out from the caller (gamma) by the information register.

Description

Field of the Invention The present invention relates to a return method

calls to a mobile.

  Currently this is done by the mobile itself which dis5 poses following commands through the menu in his phone: - forwarding all voice calls - forwarding voice calls when the mobile is busy forwarding if the mobile does not answer - forwarding if the mobile does not have radio coverage - forwarding faxes - forwarding calls for data transmission etc ...

- and finally, cancellation of the referrals.

  These commands act on the HLR register of the

concerned.

  There is another way to order or cancel this call forwarding:

  from the operating interface of the subscriber's HLR register, at the disposal of its operator.

  Object of the invention The object of the present invention is to develop a method

  and an installation for remote reminding of incoming calls (receiving telephone calls, faxes, etc.) directed to a mobile phone (GSM, TDMA, etc.) to another number ( referral).

  The object of the invention is notably to develop a procedure and an installation enabling the calling mobile to continue to receive all the calls normally and to make all the outgoing calls.

  while allowing the observation of the communication.

  DESCRIPTION OF THE INVENTION To this end, the invention relates to a method of the type defined above characterized in that simulates the visit of the mobile concerned to a return device by launching from it a message signal to the HLR register of the mobile subscriber to replace the address of the VLR visited location register by that of the forwarding equipment which will thus provide for any incoming call coming from a number and to

  destination of the mobile, the relocation register information that will direct this call to the forwarding number.

  Regardless of the calling mobile and without the intervention

  of its mobile operator, the invention thus makes it possible to control

  sends the voice, fax and data calls to a specific number. All outgoing calls can be made from the calling mobile. Similarly, the mobile can continue to receive normally

all calls.

  According to another advantageous characteristic, the referral number is operated as a switch, a telephone communication observation equipment is inserted in connection with the referral number, when a call is received for the mobile. , this one arrives in the return switch which interrogates the register of the mobile to know the true localization of the mobile and to return the connection towards

the cellphone.

  According to another advantageous characteristic, after a call sent by the target mobile which cancels the forwarding, the call forwarding procedure will be automatically reestablished after each call of the target mobile, again forcing the location of the target mobile on the forwarding number. . It is possible not only to transfer the call but also to achieve a transparent interception of a call to the target mobile and at the end of this operation, call forwarding is again

  forced to be ready to observe a new incoming call to the target mobile.

  Drawings The present invention will be described in more detail below with the aid of different diagrams explaining the process and the installation. Thus, - Figure 1 shows the diagram of the progress of a remote control of a call forwarding to a receiving station referrals, Figure 2 shows schematically the reforcing procedure of the location for the return and storage of the actual location of a target station after an action of the mobile which cancels it, - Figure 3 explains a procedure of transparent interception of a call to the target mobile,

  - Figure 4 explains the procedure for payment by a proxy mobile of international calls.

  DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

  According to FIG. 1, the invention relates to a method of remote control of a call forwarding to a receiving station of the referrals.

  Schematically, we know a mobile (ac) which we want to remotely call forwarding. This mobile (cc) depends on a register HLR (a) called, more precisely, "main location register of a mobile subscriber". This mobile (a) is also in visiting relation with a mobile switch MSC (a); the mobile (a) is registered in the visited location register VLR of the switch MSC (ct)

  1o as long as the mobile acts (telephone call, sending messages, etc., ...) in the geographical cell spring MSC switch (c).

  When the mobile (a) leaves the cell of the spring of the MSC switch (a) and is active, it is registered in the "provisional" register VLR of the MSC switch of the cell "cell visited"

in which he is.

  To communicate wherever it is, the mobile (a) requests that a call be established with the destination number (D) (mobile or landline, etc.) and for this, the information

  are previously exchanged through the international signaling network called abbreviated network SS7.

  Once the information necessary for the establishment and authorization of the call is exchanged through this SS7 signaling network according to the MAP procedure, the connection between the mobile (a) and the requested mobile is done by a radio link then, downstream, by the telephone network (RTC) and then either directly to the recipient if it has a fixed station or via a new radio network,

if it is a mobile.

  Communication between the mobile (a) and the PSTN telephone network is via a "gateway" or GMSC (a) telephone switch acting as a gateway with the other mobile networks.

  On the recipient's side, if this is a mobile, there will be

  also such a GMSC telephone switch.

  For convenience for explanations, in the description

  following, the suffix (a) or (p3) is associated with the switching elements and network used by a mobile (a) or (13) or on which depends, even temporarily, such a mobile and, more generally, the number of phone. The same will be true of a third party, namely the reference number (y)

  in the different procedures described below.

  According to the invention, the call forwarding is a procedure that is to be performed by remote control for an incoming call, sent by a station (>), whether it is a fixed station directly connected to the telephone network RTC or a mobile connected to the telephone network by its mobile switch MSC (f3) and the telephone switch GMSC (13) making

  gateway office with the PSTN telephone network.

  For example, we want to return the call made by a

  station (f3), intended for mobile (aE) to a reference number (y).

  For this, the invention provides an installation and a method for performing this call forwarding remotely by simulating the presence of the mobile (a) in the cell reference number (y) and the launch of a signaling procedure [procedure prior to establishing a call from the mobile (a)], from the reference number (y). This substitution procedure is automatically renewed after the mobile (x) has acted again because this action, after the return, neutralizes the return. But as to cancel the return it is necessary to communicate to the visited location register VLR, the forwarding number, which, informed of this event, can immediately restart the transmission procedure to the forwarding number (y). The

  operations are carried out under the conditions and with the means described below.

  According to the invention, the procedure for forwarding calls and their interception possibly transparent or in conference are done using a remote control equipment of call forwarding ETRA; this equipment consists of an IDC control interface with an SCCP route with the mobile network. In this case, it is a connection with the mobile (a) which we want to return the call. For this, there must be a roaming agreement between the network in which the ETRA equipment is installed and the mobile telephone network (a),

condition that one supposes fulfilled.

  The mobile (ax) to which calls are to be forwarded is known by its international number MSISDN which is the general mobile number known to the world outside the mobile network. The IMSI number, which is the internal number of the mobile network at the same time, is also determined.

  from it and query the HRL register.

  With this information, the method of the invention replaces the actual location information of the mobile (a) [the VLR register (a), visited by the mobile (aE)], those corresponding to the call number (y) which will have initiated a signaling procedure using the mobile phone identity (a) to reach the HLR register (a) of the mobile (X) and write therein instead of the last location of the station (aE), that of the number (y) ) by simulating the presence of the mobile (a) in the visited location register VLR (y) which is associated with the reference number (y). This procedure for forcing the location of the mobile (a) will be detailed below (FIG. 1).

  By convention and to clarify the description, the signaling exchanges i0 carried out on the network SS7 are represented by lines

  full and telephone or similar connections are represented by

interrupted features.

  During a first step (1), the ETRA device issues an IMSI number request (a) by the "send routing information by SM" ("SEND ROUTING INFO FOR SM") command, from the standard MAP procedure. GSM technology networks using the international number or ISDN number of the mobile station, ie the MSISDN number as the key to reach the HLR location register (a) of the

mobile (c).

  In return for this request, the equipment ETRA receives the internal number IMSI (a) and the number of the switch MSC (a.) Visited by the

mobile (a).

  The equipment ETRA thus now has in addition to the numbers MSISDN (c) and the number IMSI (a) of the mobile (a) also an MSRN number (c) which has been valued by the interface IDC, it is to say his

  temporary number as well as the number of the visited location register VLR (c) and the profile of the mobile (a).

  The equipment ETRA can then behave as a location register VLR visited by the mobile (a) and it transmits (2) to the location register HLR (o), a location update command by sending the number IMSI (ac) as well as the visited location register,

  which is a simulation and in fact corresponds to the VLR register (y) of the recipient of the call forwarding.

  So, after getting the information MSC (cc) and VLR (o),

  it has been possible to replace this information in the register HLR (a) by the corresponding information of the reception number of the references (y), that is to say by the information MSC (y) / VLR (y) of the number (y).

  ETRA call forwarding remote control equipment includes * A VLR (Visited Location Register) which stores o The mobile's MSISDN (access key number 1) o The mobile's IMSI (access key number 2) Then * The MSRN (temporary number of the mobile) (access key number 3) * The number of the VLR visited * The "profile" of the subscriber After this installation, in case of a call (3) emanating from a station (6) and requesting the mobile (cc), the operations normally take place by the exchange of signaling information through the SS7 signaling network. This procedure then establishes the connection between the calling station (f) and the reception number of the referrals (y) as

  if it was the mobile (ca).

  This call forwarding procedure is as follows: The call (3) of a landline or mobile phone (> to the mobile (a)

  ends on the GMSC (x) switch of the mobile network (a).

  - Then, in response (4), the switch GMSC (a) requests, as routing information, the MSRN number in the register HLR (c) by a command called "send routing information" ("SEND

ROUTING INFO ").

  However, since the HLR register (a) is prepared as indicated above, it

  contains the information that the mobile (cr) visits the VLR register (y).

  - The register HLR (a) (5) asks the register VLR (y) to find the temporary number MSRN that it has assigned to the mobile (a) visited, so as to allow calling it (the request message "request "PROVIDE ROAMING NUMBER" This request is made

  using as key the IMSI number of the mobile (a).

  - The relocation register VLR (y) responds by returning the MSRN number (y) previously entered by the IDC command interface of

  the ETRA equipment on which calls are to be forwarded to mobile (a).

  If multiple handsets are to receive call forwarding, call forwarding stations with numbers (y) 1, (y) 2 will be associated with them. The HLR register (a) returns (6) this MSRN number (y) to the GMSC switch. (a) and the GMSC switch (oc) initiates a call (7) to that MSRN number (y) which will result in the return station (y). The switch GMSC (ac) then establishes the connection between the calling station (D) and the station

called (y).

  While Figure 1 shows the operations related to the return of a call from an external station (>) to the mobile (a), Figure 2 shows the automatic relocation of the mobile (a) after an operation performed by

the mobile (aE) which cancels it.

  This operation is the issuing of a call, a stop / walk action, etc. Indeed, any intervention of the mobile (a) is tom tomatically by updating its location in its register HLR (a). In other words, the substitution of its simulated location by the station (y) disappears in the register HLR (ot) to be replaced by the actual location of the mobile (a). Indeed, the action performed by the mobile (a) results in a request to cancel its old location in the VLR register (y), previously visited or more exactly the VLR (y) that the mobile (a) has visited by the simulation or substitution described above. The visited location register VLR (y) is therefore informed of the action performed by the mobile (a) and it can restart the procedure of remote control of the call forwarding to the receiving station referrals (y) as it has has been described above. This relocation operation of the mobile (a) is done automatically in the register automatically

VLR location (y).

  According to FIG. 2, in more detail, the mobile (a) sends a call (1) to a fixed station or a mobile such as, for example, the

mobile (f3).

  The HLR register (a), thus requested, sends (2) a cancellation request addressed to the VLR register (y) assumed to have been previously

visited by the mobile (this).

  Then, the equipment ETRA resumes the call forwarding procedure (3) described above (FIG. 1), that is to say that it relocates the mobile (a) in the register IVLR (y) then that the call of the mobile (a) to the

buddy (y) is still in progress.

  The invention also allows transparent interception

  from the call to the mobile (a,) according to the procedure shown in Figure 3.

  For this purpose, the ETRA call forwarding remote control equipment comprises, in addition to the IDC command interface, an MSC (y) switching subsystem which makes it possible to forward the calls destined for the forwarding station (y) automatically. to the mobile actually receiving

  the call, allowing through interception equipment or conference, to observe the communication.

  To allow this transparent transmission of call forwarding sent by the station (O) towards the mobile (a) but which, because of the return, arrives in the return receiving station, the GMSC switch (a) queries the register HLR (a) to obtain the location number of the mobile (a) in the visited location register VLR (c) and to direct the call of the GMSC switch (a) to the mobile (a). The communication of the station (3) then passes through the switch GMSC (c) which indicates to it, as destination, the switch GMSC (y) of relocation

  and the latter transmits the call through the interception station PDI which is transparent and sends the call to the mobile (a) through the switches GMSC (a) and MSC (a).

  The processing of a call will be represented below.

  In more detail, in this system configuration, the MSRN temporary number (y) assigned by the IDC control interface does not correspond to a fixed station (y) as in Figure 1 but to a GMSC switch (y) on which are connected one or more

PDI call observation stations.

  When the GMSC (x) switch receives a call (1) from a station (f) intended for the mobile (a), or more exactly the temporary number

attributed to this mobile.

  Then the GMSC switch (a) interrogates the HLR register (a) with the number of the mobile (a) received as a key. It obtains from the HLR register (a), in return, the temporary MSRN (y) dummy number, so that the GMSC (oc) switch initiates a telephone call (2) to this number.

  which ends on the GMSC switch (y) in the ETRA device.

  The ETRA equipment then determines the true location of the mobile (a) to establish the communication by allowing to connect the

PDI interception station.

  For this, the switch GMSC (y) asks (3) for the visited location register VLR (y), which is part of the equipment ETRA, the true

MSRN number (c) of the mobile (cL).

  For this purpose, the register VLR (y) acts (4) on the register HLR (O)

  to relocate the mobile (a) in the real register VLR (a) of the mobile (a) which has been stored at each relocation of the mobile (a).

  Then, the register VLR (y) asks (5) at the register VLR (a), the

true MSRN number (a) of the mobile (a).

  The register VLR (y) transmits (6) this number MSRN (x) to

  GMSC switch (y) and the latter (GMS (y)) launches (7) the call to this nu5 mer end MSRN (a) to end on the mobile (a).

  The GMSC (y) can connect the incoming call (8) arriving from the station (6) and the outgoing call to the mobile (x) with insertion of the observation equipment PDI of the communication. He then answers the incoming call

issued by the GMSC switch (a).

  Then, the GMSC switch (a) connects (9) the two

  calls, (the one sent by the extension (f) and the one by the GMSC switch (y).

  At the end of the call, released by the station (13) or by the mobile (a), the remote control equipment ETRA automatically performs the relocation procedure described in Figure i to be ready to

  observe a new incoming call to the mobile (a).

  International calls being billed must be taken into account to avoid problems with call forwarding. For this, the system introduces an agent of the international calls generated by the observation according to the procedure represented in the

figure 4.

  According to the invention, for this, the international call is replaced by a national call without having to install equipment in the country of mobile (a). Thus, according to Figure 4, a mobile agent (8) is used, which will pay the international calls created by the service of observation of the

  calls. The proxy mobile (6) is in fact a SIM card of another mobile network but in the same country as that of the observed mobile (a).

  The SIM card of the proxy mobile (8) does not itself need to be located in a mobile and can be stored in the country of

ETRA equipment (y).

  The procedure proceeds as follows.

  The mobile (a) is relocated (1) in the VLR register (y). Then, the mobile proxy (6) is also relocated (2) in a definitive manner

in the VLR register (y).

  When a call (3) of a station (f) is sent to the

  mobile (a), observed, the number MSRN assigned to it by the register VLR (y), visited is the number of the mobile proxy (6).

  A call is generated (4) to the proxy (6). This

  call will be a national call on the mobile bill (a). Switching

  GMSC (6) then interrogates the VLR register (y) visited by (8) and finds a temporary number MSRN (8) for the proxy (6) pointing to the

GMSC switch (y).

  An international call is then initiated (5) by the GMS switch (6) (for the account and billed at y) to the GMSC switch (Y).

  The switch GMSC (y) then launches (6) a call to the mobile (a) after asking the receiving station (y) to relocate it to (oc). When the mobile picks up, the switch GMSC (y) establishes the connection as well as with the observation station PDI. As before the mobile (a) is relocated immediately in (y) to allow

  watching the next incoming call.

he

Claims (2)

CLAIMS) A method of diverting calls to a mobile, characterized in that the presence of the mobile (a) concerned is simulated to the forwarding number (y) by sending a message from the latter (y). signaling to the HLR register of the mobile (a) to replace the real location register VLR (a) by that of the reference number VLR (y) which will thus provide any incoming call from a number (ô) and at destination of the mobile (a), the information of the relocation register VLR (y) which will direct this call on the reference number (y).   2) Process according to claim 1, characterized in that - the return equipment is operated as a GMSC switch and a VLR register, - a telephone communication observation equipment is inserted in connection with the reference number. (y), - upon receipt of a call to the mobile (a), it arrives in the GMSC switch (y) returning which interrogates the register HLR (ct) of the mobile (a) to know the true mobile location (a) and   return the link to the mobile (a).   Method according to claim 1, characterized in that   after an action from the mobile (a) object of the reference, it relocates it (a) automatically in the register VLR (y) of the reference number (y).   4) Method according to claim 1, characterized in that for international calls, using a proxy mobile for billing. GLOSSARY   VLR "Visited Location Register": Location Register Visited HLR "Home Location Register": Main Location Register of MSC mobile subscriber "Mobile Switching Center": GMSC mobile phone switch "Gateway Mobile Switching Center": Telephone switch   acting as a bridge with other mobile or fixed networks.   MAP "Mobility Application Part">: Standard High Level Protocol   GSM which carries out all exchanges related to mobility (roaming notably or "roaming").   MSISDN "Mobile Subscriber International Number": "Classic" number of the mobile known to the world outside its network. (+33608123456 for a French number) IMSI "International Mobile Subscriber Identity": Another number internal to a mobile network including MCC (208 for France, 20 for SFR) by example 2082012345678.   MSRN "Mobile Subscriber Roaming Number": A temporary number allocated to a mobile by the visited VLR to allow an outside network to call it, an ordinary number of the same type as the   MSISDN, but part of the dial plan of the visited network.   (for example +46703013456) if the MSISDN mobile is visiting a swedish network.   SCCP "Network Protocol without Connection": Standard Protocol of   mobile networks It is part of the SS7 set.