MXPA00001476A - Transfer of calling party identification in a mobile communication system - Google Patents

Abstract

Reliable and comprehensive calling party identification services are provided to mobile subscribers. Calling party identification information, including for example public and private telephone numbers, is sent to a mobile database in a called party mobile network as part of an interrogation procedure for obtaining routing information for routing that call to the mobile subscriber in the PLMN. The mobile database then sends the calling party identification to a mobile switching center where the called mobile station is currently registered and being served as part of that interrogation procedure. The serving mobile switching center stores that calling party identification together with a roaming number allocated for the call. When the call is routed to the serving mobile switching center, the stored calling party identification is forwarded to the mobile unit along with call setup information and is ultimately presented to the mobile unit subscriber.

Description

TRANSFER OF IDENTIFICATION OF THE USER CALLING IN A MOBILE COMMUNICATION SYSTEM FIELD OF THE INVENTION The present invention relates to a system for offering additional complementary subscriber services in a mobile cellular radio communication network. An example of a service to which the present invention is particularly focused is a calling user identification service for mobile radio subscribers. BACKGROUND OF THE INVENTION In mobile radiocommunication networks, such as cell phone systems, neighboring radio cells provide coverage of the area to which service must be provided. Each cell has a base station (BS) that operates on a set of radio channels. A group of base stations is controlled by a Mobile Switching Center (MSC) that controls calls to the public switched telephone network (PSTN) and from said network, to the integrated services digital network (ISDN) and from said network, and towards the public land mobile network (PLMN) and from said network. The MSC typically handles call switching, routing and charging. It is desirable to offer mobile subscribers additional services that typically require an individual subscription before the service can be invoked. A system in which such complementary services can be provided is the Global System for Mobile Communications (Global System for Mobile Communications) (GSM). See, for example, the technical specification of GSM 03.78, version 5.0.0, which refers to Adapted Applications for a Improved Mobile Network Logic (CAMEL) published by the European Telecommunications Standards Institute (ETSI) (European Telecommunications Standards Institute). Subscriber's individual supplementary services can be divided into two types: those that modify or complement the process of an originating call (known here as "subscriber services A"), and those that modify or complement the termination process (ie, reception ) of a call (known here as "subscriber service B"). The present invention relates particularly to subscriber services B where the information related to the call is provided to the mobile subscriber station B. A parameter related to calls of this type is the telephone number or other identification of the party performing the call. the call and it is sometimes known as a line identification presentation that makes the call (CLIP). While automatic number identification (ANI) services are known in fixed telephony networks, mobile telephony networks present unique challenges to reliably provide such identification to mobile subscribers on the move. In fact, to make a call ending in a mobile station whose location may be changing continuously, several databases in the mobile communication network are required to track mobile stations. For example, many mobile communication networks such as GSM employ a home location registration (HLR) database node. The HLR stores the subscriptions of several mobile subscribers as well as the location of the mobile station. Particularly the HLR stores information identifying the mobile switching center that is currently serving the present location of the mobile station. This information is updated as the mobile station moves, causing the mobile station to register its location with the HLR through a mobile switching center (MSC). More specifically, when a mobile station moves into a new mobile switching center area, it is registered with said new MSC, and the MSC requests data regarding the mobile station from the HLR. At the same time the HLR receives information regarding the MSC area where the mobile station is currently located. Accordingly, when the mobile station makes a call, the MSC already has the information necessary for the establishment of a call without having to interrogate the HLR.

To monitor the location of mobile stations, a visitor location register (VLR) is also used, which is associated (and usually located in the same place) with each MSC. The VLR contains a temporary subscriber information which is required by the MSC to provide service for visiting subscribers and can be viewed as a "distributed" HLR. When a mobile station moves into a new MSC service area, the VLR associated with this MSC requests data about the mobile station from the HLR and stores said data. In summary, the VLR is used to service mobile stations on the move. When a call is established from an initial mobile or gate switching center, where a call destined for a mobile station enters the mobile network, to the serving MSC / VLR, the number of the calling party can not be provided or easily accessible otherwise. For example, when the mobile subscriber receiving the call is moving on a visiting mobile network, it is often the case that the transit network carrying the call to the digitized network either does not wish to offer the information of the party making the call. or can not offer such information. There are also interconnected agreements between several communication providers that do not include a transfer of numbers from the party making the call. There is an additional problem to the extent that there are currently no provisions to combine a party identification service that makes a call within a private numbering plan of a virtual private network (VPN). Particularly, a private number associated with a mobile station in accordance with a plan (VPN numbering instead of a conventional length / format phone number) is not transferred to the mobile switching center where the mobile subscriber is in fact registered as part of the call setup message information offered for a particular call. This problem is further exacerbated when VPN services are extended through cellular provider networks or across international borders in accordance with what is described above. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a complete and reliable part identification service that makes a call to subscribers -mobiles. It is a further object of the present invention to provide an improved and more reliable method for transferring a calling party number to a mobile subscriber moving in a foreign mobile communication network. It is a further object of the present invention to provide a calling party identification service which identifies a party making a call to a mobile subscriber through the use of a private number associated with a private numbering plan such as employees in private networks. These and other objects are achieved through the present invention at least in part by sending a calling party information, including public and private telephone numbers, to a mobile database in the party's mobile network. that receives the call as part of a routing interrogation procedure. A mobile database sends the calling party identification to a mobile switching center where the mobile station receiving the call is currently registered as part of the interrogation procedure. The mobile switching center stores the identification of the calling party together with a shift number assigned for the call. When the call is routed to the mobile switching center, the identification of the party making the stored call is sent to the mobile unit together with the call establishment information, and finally, presented by the mobile unit to the subscriber. In a first exemplary embodiment of the invention, the mobile communication network includes an initial routing node and one or more mobile switching nodes for directing calls to a plurality of mobile communication units. A mobile subscriber database is connected to the initial routing node and to the plurality of mobile switching nodes. When a call is made from a party making a call to one of the mobile communication units, an identifying party making the call from the calling party is detected at the initial routing node. A determination is made as to which mobile switching node is currently serving the mobile communication unit that receives the call. The identification; The calling party is sent as signaling information to the mobile subscriber database from the initial routing node. The identification of the calling party is then provided from the mobile subscriber database to the mobile service switching node for delivery to the mobile switching unit that receives the call through a base station in a radio communication interface. More specifically, the mobile subscriber database may be a home location registration (HLR) node which stores mobile unit identification, subscription, as well as location information for several mobile units. Each mobile switching node is associated with a visitor location register (VLR) that stores mobile unit subscription identification, and location information for several of these new mobile units. In this way, the identification service of the party making the call in accordance with the present invention reliably and effectively provides the identification information of the party making the necessary call in several mobile communication networks, even to which they cover more than a country, in such a way that subscribers in displacement continue to receive an effective service. Another exemplary application of the present invention can be implemented in combination with a private numbering service where the members of the private numbering plan, (including one or several mobile communication units), communicate through the dialing of numbers of the party making the private call, for example what are known as short numbers or extensions. An identification service of the calling party is provided in such a way that when a call coming from a calling party is made with one of the member mobile communication units, a private party making part number is called. corresponds to the party making the call is presented in the mobile communication unit. An application in which such private numbering plans are frequently used is in virtual private networks (VPNs) as it can be implemented using an intelligent network type (IN) service logic. An initial service detection and routing node detects whether the call is focused on a member of the private numbering plan. If this is the case, parameters related to the call are sent to a logical service node that transfers an identification number associated with the call in the private identification of the party making the corresponding call. The service logic returns the identification of the party making the private call to the initial service node and detection routing. The identification of the party making the private call is then sent to a mobile subscriber database. When the mobile switching node which is currently serving the called mobile communication unit is determined, the identification of the part making the private call is sent from the mobile subscriber database to this mobile switching node of the mobile subscriber. service to finally be sent to the mobile communication unit that receives the call along with the call. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a functional block diagram in accordance with a first exemplary embodiment of the present invention; Figure 2 is a flowchart illustrating exemplary procedures that implement the present invention in accordance with the embodiment illustrated in Figure 1; Figure 3 is a partial signaling diagram showing relevant signals that can be used to implement the present invention in the first embodiment in a Signaling System environment number 7 (SS7) / Figure 4 is a second exemplary embodiment of the present invention how it applies to virtual private networks (VPNs); Figure 5 is a flow diagram illustrating exemplary procedures for implementing the second embodiment of the present invention; and Figure 6 shows a partial signaling diagram that can be used to implement the second embodiment of the present invention in an SS7 environment. DETAILED DESCRIPTION OF THE DRAWINGS In the following description, for purposes of explanation and not limitation, specific details are presented, such as particular modalities, data flows, signaling implementations, interfaces, techniques, etc., in order to offer a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention can be practiced in other embodiments that depart from the specific details presented. For example, while the present invention is described in the context of an exemplary cellular telephone network employing a GSM terminology, those skilled in the art will note that the present invention can be implemented in any cellular system. In other cases, detailed descriptions of well-known methods, interfaces, devices and signaling techniques are omitted so as not to obscure the description of the present invention with unnecessary details. Figure 1 illustrates an exemplary mobile communication system 10 in which the present invention can be implemented. A mobile communication system 10 includes a mobile gate switching center (GMSC) 12 that connects with other telecommunication networks such as, for example, the public switched telephone network (PSTN)., ISDN or a cellular network, etc. The mobile gate switching center 12 is connected to one or more mobile switching centers (MSC) 14 provided in the mobile communication system 10. The gate MSC is the point in the public land mobile radio network (PLMN) 10 where Calls are made to mobile subscribers. Accordingly, each call terminating at a mobile station must be routed through GMSC 12. GMSC 12 contains signaling functions to retrieve information from a home location resource (HLR) 16 which is necessary for the establishment of a call that ends in a mobile station. Based on the results of the interrogation to identify the MSC / VLR currently serving the mobile station receiving the call, the call is routed by the GMSC 12 to the service MSC 14. While the GMSC is illustrated as a Separate node for illustration clarity, can be located in the same unit as a MSC / VLR node. Each mobile switching center 14 performs telephony switching functions associated with calls involving at least one mobile or portable switching unit indicated as mobile stations (MS) 20 in Figure 1. With each mobile switching center 14 it is included a visitor location register (VLR) 15 which includes a database containing information on all mobile stations currently located in the service area of this MSC. VLR 15 contains a temporary subscriber information which is required by MSC 14 to offer services to visiting / on-the-go mobile subscribers. When a mobile station moves in a service area of a new MSC, the VLR associated with this MSC requests data regarding the mobile station from the home location register (HLR) 16 and store said information. Thus, whose station on the move makes a call, the VLR already has the information required to establish the call. The visitor location register 15 may also be an independent node. But in the currently preferred exemplary embodiment the VLR 15 is integrated with the MSC 14 to eliminate signaling between the nodes in a network, between the two nodes in a network, that is, an internal signaling is used which consequently decreases the load of signaling in the network. The home location register 16 is a database that stores and handles data and subscriptions. For each mobile "home" subscriber, the HLR contains permanent subscriber data such as mobile station ISDN number (MSISDN) which uniquely identifies the mobile telephone subscription in the public switched telephone network numbering plan and an International Mobile Subscriber Identity (IMSI) that is a unique entity assigned to each subscriber and used for all signaling in the PLMN 10. All subscriber information related to the network is connected to the IMSI. The HLR 16 also contains a list of services that a mobile subscriber can employ together with a current subscriber location number that corresponds to a VLR address. The HLR can be integrated into the same node as the MSC / VLR or it can be implemented as a separate node as indicated in the exemplary embodiment illustrated in Figure 1.

Once the service MSC / VLR node is identified, a call intended for one of the mobile stations 20 is routed by this service MSC / VLR to the base station 18 associated with the cell in which the mobile station is currently located. call 20. Using well-known and established protocols and procedures, the call is sent on the radio interface by this base station 18 to the mobile station called 20. The general procedures for routing a call to a mobile station in the PLMN 10 are describe below. Consider that a call is made from a party making an "A" call to a party receiving the call "B" corresponding to one of the mobile stations 20 in PLMN 10. Thus, the number marked "A" , that is, the mobile station ISDN number (MSISDN), is analyzed in a PSTN exchange that determines that the call is for a mobile subscriber. The call is routed to the nearest GMSC 12 in the PLMN of address 10 of the mobile called B. After analyzing the MSISDN for the routed call, the GMSC 12 sends a signaling message to the HLR 16 requesting information to be used to route the call to the service MSC / VLR where the mobile station is temporarily registered. Using the MSISDN, the HLR 16 retrieves the IMSI and a data record for the mobile subscriber B. Since the service VLR address for this mobile station was received when the mobile was registered in the PLMN 10, the HLR 15 entered into contact the service VLR to obtain a scroll number. The VLR sends the shift number to the HLR 15, and HLR sends the shift number to the GMSC 12 which allows the GMSC to then route the actual call to the service MSC 14. Since the MSC knows the location area where it is located. locate the mobile station, send a paging message and call the mobile station in accordance with known procedures. If a mobile subscriber subscribes a calling party identification service (CPI) then the procedures presented in a CPI routine 30 illustrated in Figure 2 are followed. A call from a part A to a part B is received in the GMSC 12 including the number of A, the number of B, and other routing information (block 32). As part of the GMSC interrogation procedure to locate the current location of "B's", the GMSC 12 sends the number of A together with the normal request for routing information to the HLR 16 (block 34). Make a decision (block 36) as to whether Part B is an active subscriber of the CPI service. In this exemplary embodiment, this determination is established at the HLR node 16 by reviewing the "B's" subscriber data record (s) for the purpose of determining a CPI marker is established. If the CPI dialer is not set, which means that B is not currently subscribed to the CPI service, the routing and call establishment procedures described above are executed (block 38). However, if B is currently subscribed to the CPI service, when the HLR comes into contact with the serving MSC / VLR node where B is currently located requesting a displacement number, the HLR also sends the number from A to the MSC / Service VLR (block 40). The serving MSC / VLR stores the number of A and sends the required offset number to the HLR (block 42). The HLR sends the received shift number to the GMSC (block 44), and the GMSC routes the call to the service MSC / VLR (block 46). The service MSC / VLR then routes the call to the appropriate base station together with the previously received A number (block 48). The base station transmits the call and the number of A for reception by the mobile station of B (block 50). The mobile station of B then displays the number of A when the call is received on the radio link (block 52). Using this procedure, mobile subscribers traveling on a foreign / visitor mobile network can independently receive the signaling capabilities supported between the GMSC and the MSC / VLR to reliably receive the identification service of the party making the call. That is, the invention offers a solution that overcomes the technical or administrative limitations that frequently occur today when a mobile subscriber is moving in a foreign country. A signaling diagram illustrating a signaling according to SS7 as an example for implementing the present invention in a GSM-type PLMN is illustrated in figure 3. In the physical, data and network layers, SS7 employs levels 1, 2, and 3 part of message transfer (MTP), respectively. Network layer functions are also implemented using a signaling connection control (SCCP) part for certain applications. Possible applications that relate to mobile communication systems such as GSM include the telephone user part! (TTJT?), ~ ISDN user part (ISUP), mobile application part (MAP), transaction capability application part (TCAP), and transaction capacity (TC) among others. With reference to Figure 3, when a PLMN call is received in the GMSC, a sent routing information message is sent along with a calling party identification information (CPI) ie the number of A to the HLR. The HLR sends ~ the ICC in addition to a "Offer Routing Number" (PLMN) message to the service MS / VLR. The serving MSC / VLR sends a PRN acknowledgment signal back to the HLR which in turn sends an SRI acknowledgment signal from the HLR to the GMSC. An initial ISUP address (IAM) message or an equivalent message in other signaling systems is then used from the GMSC to the serving MSC / VLR to route the call from the GMSC to the serving MSC / VLR. Thus, the present invention can be easily implemented employing signaling systems consistent with only minor modifications for signaling between the GMSC, HLR, and service MSC / VLR nodes. - ~ - The present invention can also be profitably applied to provide a calling party identification service for mobile subscribers that are also part of a private numbering plan. For purposes of illustration only, said private numbering plan is described in the context of a virtual private network (VPN). Reference is now made to the function block diagram illustrated in Figure 4 in which similar reference numbers refer to similar elements of Figure 1. An exemplary implementation of a VPN service can employ an intelligent network type model (IN ) or advanced intelligent network (AIN). The Adapted Applications for Increased Mobile Network Logic (CAMEL) that was mentioned in the background of the invention is an implementation of this type. The mobile gate switching center 12 includes a functional entity called service switching function (SSF) 72 which links the GMSC 12 to a service control point (SCP) 62. The service switching function 72 is similar to the used in intelligent networks but employs different trigger mechanisms consistent with PLMNs. The points in the call processing in which the logical service processing may be necessary are triggered by detection points (DP). A service control point 62 includes a service logic 64 corresponding to the affected services. In this illustration, a VPN service logic 66 is illustrated in a specific manner. A service database 68 is employed by the service logic, and again in accordance with this specific illustration, includes private numbering plan telephone numbers 70. When a call is received whose destination / termination is a mobile in the PLMN in the GMSC 12, and possibly when an interrogation is made to the HLR, the service switching function determines if an IN-type service should be triggered The GMSC / SSF determines that the service will be triggered either by analyzing the call data such as the destination number or by analyzing an indication from HLR 16 in the sense that the party receiving call B has a termination service based on IN As a result, the service switching function 72 initiates an inquiry as soon as possible. to the point of service control 62. The number of A, B number and other call data are sent from GMSC / SSF to service control point 62. The point service control 62 analyzes the inquiry and invokes the VPN service logic 66. Using the private numbering plan database 70, the VPN service logic 66 transfers the number of conventional A to a private A number, corresponding to the private numbering plan database 70. For example, the private A number may be what is known as a short number with only 4 or 5 digits. Other identifications that the call makes can be used including a subscriber name, extension, etc. The private A number is returned to the GMSC / SSF, and the GMSC initiates interrogation and routing procedures similar to those described in conjunction with Figure 2. Figure 5 is a flowchart that presents a part identification service that performs the call (GPI) in a virtual private network (VPN) routine 80 in accordance with an exemplary application of the present invention. The GMSC receives a call from party A to mobile subscriber B which includes an A number, B number, and other call data (block 82). In this example, the part that receives call B subscribes to the virtual private network that includes a private numbering plan with some type of private identification information associated with part B. As part of an initial routing interrogation procedure, the GMSC receives an indication from the HLR in the sense that part D has a termination service, based on IN which requires to be invoked (block 84). The service switching function (SSF) is then invoked and inquires the SCP that sends the A number, B number, and other call data (block 86). The VPN service logic is invoked by the SCP to translate the number from A to a private A number (block 88). The private A number is returned to the GMSC / SSF together with an instruction in the sense that the call must be established with B (block 90). The GMSC sends the private A number to HLR 16 (block 92). The HLR contacts the MSC / VLR node that serves the. area where B is currently located and request a displacement number. The HLR also sends the private A number to the service MSC / VLR (block 94). The serving MSC / VLR stores the private A number and the offset number and sends the shift number to the HLR (block 96). The HLR sends the shift number to the GMSC which routes the call to the service MSC / VLR (block 98). The service MSC / VLR alerts the mobile station called, sends the private A number (block 100), and the private A number is displayed in the mobile station B (block 102). As in the first embodiment, this second exemplary embodiment of the present invention can be easily implemented existing SS7 signals that are employed in GSM-type PLMNs as illustrated in the signaling diagram of Figure 6. The incoming PLMN call is received in the GMSC / SSF node. A sent routing information signal (SRI) is sent to the HLR using the mobile application part (MAP) protocol. Considering that the SRI signal was received the HLR sends an acknowledgment back to the GMSC / SSF which in turn sends an initial detection point message (IDP) using an INAP / CAP protocol to the service control point to trigger the VPN service. The service control point carries out the necessary translation of the number A into a private number and returns the private number to the GMSC. The GMSC connects the private number received from the service control point with the routing information message sent (SRI) to the HLR. The HLR sends the number of the party making the private call along with the offered routing number (PRN) message to the service MSC / VLR. The service MSC / VLR acknowledges receipt of the PRN signal to the HLR which in turn acknowledges the SRI signal to the GMSC. An initial address message (IAM) in accordance with the ISUP protocol is then sent from the GMSC to the service MSC / VLR. While the present invention has been described in relation to what is currently considered to be the most practical and preferred embodiment, it will be understood that the invention is not limited to the embodiment presented but encompasses all the modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (1)

1. CLAIMS In a mobile communication network including an initial routing node and one or more mobile switching nodes for directing calls to a plurality of mobile communication units and a mobile subscriber database connected to the initial routing node and the plurality of mobile switching nodes, a method comprising the steps of: making a call from a calling party to one of the mobile communication units; detect an identification of the party making the call at the initial routing node; determining the mobile switching node that currently serves the mobile communication unit; send the identification of the party making the call to the mobile subscriber database from the initial routing node; offering the calling party identification from the mobile subscriber database to the mobile service switching node; and providing the identification of the calling party with the call of the mobile switching node for delivery to the mobile communication unit. The method according to claim 1, wherein the mobile communication network includes one or more base stations connected to each mobile switching node, wherein the sending step further comprises: transferring the identification of the calling party at one of the base stations, the base station transmits the identification of the party making the call to the mobile communication unit. The method according to claim 1, further comprising: sending a parameter of the party making the additional call to the mobile subscriber database from the initial routing node. The method according to claim. 1, wherein the mobile subscriber database is a home location registration (HLR) node that stores mobile unit identification, subscription and location information for several mobile home stations and each mobile switching node is associated with a visitor location register (VLR) which stores the mobile unit identification, subscription, and location information for several visiting mobile stations, the method further comprising: sending by the initial routing node to the HLR of the identification of the call as part of an interrogation of the HLR for information - to route the call to the mobile service switching node; the sending by the HLR to the VLR of the mobile service switching node of the calling party identification, and the obtaining from the VLR of the mobile serving switching node of a shift number associated with the mobile unit; sending the shift number from the HLR to the initial routing node; and routing by the initial routing node of the call to the mobile service switching node using the offset number. The method according to claim 1, wherein each mobile communication unit includes a display, the method further comprising: presenting the identification of the calling party in the mobile communication unit. The method according to claim 1, further comprising: determining whether the mobile communication unit has a subscription corresponding to a presentation service of the party making the call offered by the mobile communication network. The method according to claim 1, wherein the identification of the party making the call is a telephone number. The method according to claim 1, wherein the calling party identification is a private number from a number plan telephone number. 9. The method according to claim 1, where the initial routing node is a gate mobile switching center. The method according to claim 1, wherein the call is transferred through several mobile communication networks. The method according to claim 1, wherein the call is transferred through several mobile communication networks of more than one country. The method according to claim 1, wherein the mobile communication unit is traveling in a foreign mobile communication network when the call was made. 13. In a mobile communication network that includes a plurality of mobile communication units, a method comprising the steps of: establishing a private numbering plan where the members of the private numbering plan, including one or more of the units of mobile communication, communicate by dialing private call numbers, and provide a calling party presentation service where, when a call originating from a calling party is placed in one of the mobile communication units, a identification of the party making the private call that corresponds to the party who made the call is presented in the mobile communication unit. The method according to claim 13, wherein the call is transferred through several different mobile communication networks. The method according to claim 13, wherein the call is transferred through mobile communication networks of more than one country. The method according to claim 13, wherein the mobile communication unit is traveling in a foreign mobile communication network when the call is made. The method according to claim 13, wherein the identification of the party making the private call is an abbreviated telephone number. The method according to claim 13, further comprising: determining whether the mobile communication unit is a subscriber of the party presenting service making the call before presenting the identification of the party making the abbreviated call to the mobile communication unit. The method according to claim 13, wherein the mobile communication network includes an initial service detection and routing node connected to several service routing nodes and a service logical node, the method further comprising: the establishment of a service of virtual private network with a corresponding service logic and a service activator; detect in the service detection and initial routing node if the call is one of the member of the private numbering plan; if it is the case, send parameters in relation to the call h towards the service logical node and transfer an identification number associated with the call to the identification of the party making the corresponding call. The method according to claim 19, wherein the service logic returns the identification of the party making the private call to the initial node of service detection and routing. The method according to claim 13, wherein the mobile communication network further includes a mobile subscriber database, the method further comprising: sending the identification of the party making the private call to the mobile subscriber database; determining which of the mobile switching nodes is currently serving the mobile communication unit; and sending the identification of the part making the private call detected from the mobile subscriber database to the mobile switching node that is currently serving the mobile communication unit. The method according to claim 21, further comprising:: sending the identification of the party making the private call from the mobile switching node that is currently serving the mobile communication unit to the unit of mobile communication. 23. An apparatus for providing a calling party identification service in a mobile communication network, comprising: an initial call routing node; a plurality of mobile switching nodes connected to the initial routing node for directing calls to the mobile communication units; a mobile subscriber database connected to the initial routing node and to the mobile switching nodes; and the initial routing node that receives a call for a mobile communication unit currently located in the mobile communication network, detecting a calling party identification of the calling party, determining which of the mobile switching nodes is currently serving the mobile communication unit, and employing the mobile subscriber database to send the identification of the party making the detected call to the mobile switching node that is currently serving the mobile communication unit for delivery to the mobile communication unit. 24. The apparatus according to claim 23, wherein the call is transferred through different mobile communication networks. 25. The apparatus according to claim 23, wherein the call is transferred by communication networks of more than one country. 26. The apparatus according to claim 23, wherein the mobile communication unit is traveling in a foreign mobile communication network when the call is made. 27. The apparatus according to claim 23, wherein the mobile communication network further comprises: one or more base stations connected to each mobile switching node, wherein the mobile service switching node sends the identification of the part that performs the call to one of the base stations and, the base station transmits the calling party's identification to the mobile communication unit. 28. The apparatus according to claim 23, wherein the initial call routing node sends the identification of the calling party to the mobile subscriber database from the initial call routing node and the base of the subscriber. mobile subscriber data provides identification of the calling party to the mobile service switching node. 29. The apparatus according to claim 23, wherein the mobile subscriber database is a home location registration (HLR) node which stores identification of the mobile unit, subscription and location information for a plurality of mobile home units and each mobile switching node is located associated with a visitor location register (VLR) that stores the mobile unit identification, subscription, and location information for the plurality of visitor mobile units, where the initial routing node sends the calling party identification to the HLR. as part of an HLR interrogation to obtain information to route the call to the mobile service switching node, and where the HLR sends the calling party's identification to the VLR of the mobile service switching node and obtains a number of displacement associated with the mobile unit called. 30. The apparatus according to claim 23, wherein the initial call routing node is the mobile switching node. The apparatus according to claim 23, wherein the identification of the calling party is a private number associated with a private numbering plan service of which the mobile communication unit is a subscriber. 32. For use in a mobile communication network that supports radio communication with mobile communication units and a plurality of mobile communication services, including a calling party identification service, a system comprising: a node of service switching; a service control node communicating with the service switching node; one or more mobile switching nodes; and a mobile communication database that stores a mobile unit identification, location, as well as service information; where the service switching node detects a call from a calling party to a mobile communication unit in the mobile communication network and sends a service request to the service control node, the service request includes a identification of the party making the call from the party making the call, and where the service control node transfers the identification of the party making the call into a virtual private network (VPN) identification and directs the switching node of the service for sending the call to the mobile switching node that is currently serving the mobile communication unit. The system according to claim 32, wherein the service switching node sends the VPN identification to the mobile communication database, and where the mobile communication database sends the VPN identification to the switching node. mobile during the routing of the call for delivery to the mobile communication unit. 34. The system according to claim 32, wherein the call is transferred in different mobile communication networks. 35. The system according to claim 32, wherein the call is handled by mobile communication networks of more than one country. The system according to claim 32, wherein the mobile communication unit is traveling in a foreign mobile communication network when the call is carried out.