JP2005303847A - Mobile communication system, area management device, control device and incoming call information providing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely provide, to mobile equipment that has been brought into a responsible state, incoming call information related to an incoming call to the mobile equipment while the mobile equipment cannot respond to the incoming call. <P>SOLUTION: If an area information storage section 41a stores mobile equipment information contained in a first location registration request, namely, if mobile equipment 10a transmits the first location registration request to the same MSC/VLR 30a and a second location registration request is not provided to an HLR/SCF 60, the MSC/VLR 30a provides a recovery notice to the HLR/SCF 60. If the area information storage section 41a does not store the mobile equipment information contained in the first location registration request, namely, if the mobile equipment 10a transmits the first location registration request to the MSC/VLR 30a different from the MSC/VLR 30b in which the location of the mobile equipment is registered, the MSC/VLR 30a provides the second location registration request to the HLR/SCF 60. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mobile communication system, an area management device, a control device, and an incoming call information provision method.

  In a conventional mobile communication system, when an incoming call is received from a network such as a fixed telephone network or another mobile communication network to the core network, if the mobile station cannot respond to the incoming call for some reason, the incoming information is displayed. It could not be provided to the mobile device and stored in the mobile device.

  For example, as illustrated in FIG. 16, when a line setting request 301 for the mobile device 310 is received from the network to the GMSC (Gateway MSC) 390 and an incoming call is received for the mobile device 310, the GMSC 390 displays an HLR / SCF (Home Location Register / A call request 302a of the mobile device 310 is provided to a mobile switching center / visitor location register (MSC / VLR) 330 via a service control function (360).

  The MSC / VLR 330 that has received the call request 302 a provides the paging request 303 to the mobile device 310. If the MSC / VLR 330 cannot receive the paging response from the mobile device 310, the MSC / VLR 330 notifies the GMSC 390 via the HLR / SCF 360 that the line cannot be set up with the mobile device 310 as the call response 302b for the call request 302a, and ends the processing. To do.

  Therefore, in the conventional mobile communication system, when the mobile device 310 cannot respond to the incoming call to the mobile device, the incoming information cannot be provided to the mobile device and stored in the mobile device. As a result, the mobile device 310 could not confirm the incoming call information.

In order to solve such a problem, when there is no response even if the mobile terminal is called, the fact that there is an incoming call is stored in the incoming call history storage means arranged in the HLR, and the HLR should receive the incoming call There has been proposed a system that, when receiving a location registration request for a mobile terminal, searches for incoming call history storage means and notifies the incoming call history (see, for example, Patent Document 1). There has also been proposed a system that provides an incoming call record in an e-mail format when the incoming call information management server records an incoming call record and receives an incoming call record inquiry signal from a subscriber (see, for example, Patent Document 2).
JP 2003-284147 A JP 2003-134568 A

  However, in the system described in Patent Document 1, the HLR notifies the incoming call history only when the location registration request is received. Therefore, for example, as in IMT-2000 (International Mobile Telecommunications-2000), the MSC / VLR accepts a location registration request for the assigned area from the mobile device, and the HLR / SCF manages the VLR and the mobile device in association with each other. The mobile communication system has the following new problems.

  When the mobile device requests location registration from the same MSC / VLR, the association between the mobile device registered in the HLR / SCF and the VLR is not changed. Therefore, the process based on the location registration request from the mobile device is completed in the MSC / VLR, and the location registration request from the VLR that requests the association between the mobile device and the VLR is not provided to the HLR. As a result, in the system described in Patent Literature 1, even if the mobile device requests location registration and is ready to respond, the HLR / SCF cannot detect it and cannot notify the mobile device of the incoming call history. Caused a problem.

  In the system described in Patent Document 2, the incoming call information management server provides an incoming call record when receiving an incoming call record inquiry signal from a subscriber. Therefore, even in this system, there is a problem that even if the mobile device is ready to respond, if the mobile device forgets to send an incoming call record inquiry signal, the incoming call record cannot be provided to the mobile device.

  Therefore, an object of the present invention is to reliably provide incoming information regarding incoming calls to a mobile device while the mobile device cannot respond to incoming calls to the mobile device in a state where it can respond.

  The mobile communication system according to the present invention includes an area management device that accepts a first location registration request for a responsible area from a mobile device, and a control device that associates the area management device with the mobile device. The area management device stores an area information storage unit that stores mobile device information related to the mobile device that has received the first location registration request, and whether the area information storage unit stores mobile device information included in the first location registration request. A control device that determines whether or not a return notification for notifying that the mobile device has become available or a second location registration request for requesting an association between the area management device and the mobile device is made according to the determination result. And a request processing unit to be provided.

  Further, the control device includes an incoming information storage unit that stores incoming information related to an incoming call to the mobile device while the mobile device cannot respond, an incoming information registration unit that registers incoming information in the incoming information storage unit, and an area management device. An incoming call information providing unit that obtains incoming call information from the incoming call information storage unit based on the provided return notification or the second location registration request and provides the received information to the mobile device.

  Here, the first location registration request is a location registration request that the mobile device requests from the area management apparatus. The second location registration request is a request for an association between the area management device and the mobile device that the mobile device performs location registration that the area management device requests from the control device. By this association, the location of the mobile device is registered with the control device. The incoming call information is information related to an incoming call to the mobile device while the mobile device cannot respond, and the content thereof is not limited. For example, the incoming call information includes the presence / absence of an incoming call, information about a caller, and the incoming call time.

  According to such a mobile communication system, an area management device, and a control device, when the area information storage unit stores the mobile device information included in the first location registration request, that is, the mobile device is the first in the same area management device. If the location registration request is transmitted and the second location registration request is not provided to the control device, the area management device can provide a return notification to the control device. On the other hand, if the area information storage unit does not store the mobile device information included in the first location registration request, that is, the first location registration request is transmitted to an area management device that is different from the area management device with which the mobile device was performing location registration. In this case, the area management device can provide the second location registration request to the control device.

  Therefore, even if the mobile device transmits the first location registration request to any area management device, the control device receives the return notification or the second location registration request provided from the area management device. Newly transmits the first location registration request and can reliably detect that a response is possible. Furthermore, the control device registers and stores incoming information in the incoming information storage unit while the mobile device cannot respond to incoming calls. For this reason, the control device can acquire incoming call information from the incoming call information storage unit based on the return notification or the second registration request from the incoming call information storage unit, and can reliably provide the incoming call information to the mobile machine that is ready to respond. .

  Furthermore, the mobile communication system preferably includes a message providing unit that obtains incoming information from the control device, creates a message including the incoming information, and provides the message to the mobile device. According to this, the mobile communication system is highly convenient for the mobile device, and can provide incoming information to the mobile device in a more reliable message format.

  As described above, the method of providing the incoming information to the mobile device by the incoming information providing unit is not limited, and the incoming information may be provided from the incoming information providing unit to the mobile device via the message providing unit. Alternatively, the incoming information may be provided to the mobile device via another device.

  Further, the area management apparatus includes an incoming / outgoing presence / absence storage unit that stores incoming / outgoing presence / absence of an incoming call to the mobile device in which the area information storage unit stores mobile device information and the mobile device could not respond, and an incoming / outgoing presence / absence storage unit Preferably, the request processing unit provides a return notification based on the presence / absence of an incoming call stored in the incoming / outgoing presence / absence storage unit.

  According to this, the area management device can register and store in the incoming / outgoing presence / absence storage unit the presence / absence of an incoming call that the mobile device cannot respond to. Then, the area management device is a case where the mobile device transmits a first location registration request to the same area management device, and the second location registration request is not provided to the control device, and the mobile device cannot respond. A return notification can be provided to the control device only when there is an incoming call. Therefore, the mobile communication system can surely provide the incoming information to the mobile device in a state where it can respond only when there is incoming information while the mobile device cannot respond to the incoming call. In addition, since the mobile communication system can omit the return notification when there is no incoming call that the mobile station could not answer, the control load on the area management device and the control device can be reduced.

  An incoming call information providing method according to the present invention includes an area management device that receives a first location registration request for an area in charge from a mobile device, and a mobile communication device that includes a control device that associates the area management device with the mobile device. A method for providing incoming information in a system, wherein an area management device stores mobile device information included in a first location registration request as mobile device information related to a mobile device from which the area management device has accepted the first location registration request. A second location registration request for requesting a return notification or an association for notifying whether or not the mobile device is ready to respond is provided to the control device according to the determination result. Further, the control device registers the incoming information in an incoming information storage unit that stores incoming information related to an incoming call to the mobile device while the mobile device cannot respond, and a return notification or second location registration provided from the area management device Based on the request, the mobile device stores the incoming call information related to the incoming call to the mobile device while the mobile device stored in the control device cannot respond.

  As described above, according to the present invention, incoming call information related to an incoming call to a mobile station while the mobile station cannot respond to an incoming call can be reliably provided to the mobile station that is ready to respond.

[Mobile communication system]
As shown in FIG. 1, the mobile communication system 100 includes a radio access network 20a and a core network 20b. The radio access network 20a performs radio communication with the mobile devices 10a and 10b and is connected to the core network 20b. The core network 20b is connected to the radio access network 20a and the network 20c. The network 20c is, for example, a fixed telephone network, the Internet, another mobile communication network, or the like. The core network 20b receives a call such as a line setting request for the mobile devices 10a and 10b from the network 20c.

  The core network 20b includes a plurality of MSC / VLR (Mobile Switching Center / Visitor Location Register) 30a and 30b, an HLR / SCF (Home Location Register / Service Control Function) 60, and a GMSC (Gateway MSC) 90.

  The MSC / VLRs 30a and 30b are area management devices that accept a first location registration request for a responsible area from a mobile device. The area in which the mobile communication system 100 provides a mobile communication service is divided into a plurality of areas that are units in which the mobile device performs location registration. A plurality of area management devices share a plurality of areas. Therefore, each of the MSC / VLRs 30a and 30b is in charge of one or a plurality of areas. For example, when the mobile device moves from the area where the location registration is performed to a different area when the power is turned on and moves from the outside of the service area to the service area (hereinafter referred to as “service area return”), It transmits to VLR30a, 30b. Then, the MSC / VLRs 30a and 30b accept the first location registration request.

  Note that management device identification information such as an LAI (Location Area Identifier) for identifying an area management device is assigned to each of the MSC / VLRs 30a and 30b. Each area is provided with area identification information such as an area number for identifying the area.

  The HLR / SCF 60 is a control device that associates an MSC / VLR with a mobile device and stores incoming information regarding incoming calls to the mobile device while the mobile device cannot respond to incoming calls. The GMSC 90 is an exchange connected to the network 20c.

  Next, the MSC / VLR 30a and 30b will be described in detail. The MSC / VLRs 30a and 30b include MSCs 50a and 50b and VLRs 40a and 40b, respectively. The VLRs 40a and 40b are databases that store the mobile device information and the presence / absence of incoming calls for mobile devices that have received a first location registration request to the area handled by the MSC / VLRs 30a and 30b. The VLRs 40a and 40b include area information storage units 41a and 41b and incoming call presence / absence storage units 42a and 42b.

  The area information storage units 41a and 41b store mobile device information related to the mobile device that has received the first location registration request for the area handled by the MSC / VLR 30a and 30b, respectively. The area information storage units 41a and 41b store, as mobile device information, mobile device identification information for identifying a mobile device and area identification information of an area where the mobile device performs location registration in association with each other. The area information storage unit may store only the mobile device identification information as the mobile device information when there is only one area that the MSC / VLR is in charge of. The mobile device identification information includes a user ID, a mobile device number, a telephone number, and the like. The user ID includes IMUI (International Mobile User Identity).

  Hereinafter, the MSC / VLR 30a receives the first location registration from the mobile device 10a, the area information storage unit 41a stores the mobile device information of the mobile device 10a, and the MSC / VLR 30b registers the first location from the mobile device 10b. A case where the area information storage unit 41b stores the mobile device information of the mobile device 10b will be described as an example.

  The incoming / outgoing presence / absence storage units 42a and 42b store the presence / absence of an incoming call to the mobile device in which the area information storage units 41a and 41b store the mobile device information but the mobile device cannot respond. The incoming / outgoing presence / absence storage units 42a and 42b store the mobile device identification information in association with the presence / absence of an incoming call that could not be answered. FIG. 2 shows an example of the incoming call presence / absence storage unit 42a. The incoming / outgoing presence / absence storage unit 42a stores the IMUI of the mobile device stored in the area information storage unit 41a in association with a flag indicating the presence / absence of an incoming call that cannot be answered. The flag indicates that there is an incoming call for which “ON” could not be answered, and indicates that there was no “OFF”. In the initial state, the flag is off.

  The MSCs 50a and 50b are exchanges connected to the radio access network 20a. Here, the MSC 50a will be described as an example, but the MSC 50b has the same configuration. The MSC 50a includes an I / F 51 that is an interface with the HLR / SCF 60 and the GMSC 90, an outgoing / incoming control unit 52, an I / F 53 that is an interface with the radio access network 20a, a message storage unit 54, and a message providing unit 55. The incoming / outgoing presence registration unit 56 and the request processing unit 57 are provided.

  The outgoing / incoming control unit 52 controls the transmission from the mobile device and the incoming call to the mobile device. A part performed by the MSC / VLR 30 as incoming processing will be described with reference to FIGS. 3 and 1. For example, when the line setting request 1 for the mobile device 10a arrives at the GMSC 90 and there is an incoming call to the mobile device 10a, the outgoing / incoming control unit 52 acquires the call request 3a for the mobile device 10a from the GMSC 90 via the I / F 51. To do. The call request 3a includes mobile device identification information of the mobile device 10a and information related to incoming calls. The outgoing / incoming control unit 52 refers to the area information storage unit 41a, and provides the paging request 4 to the mobile device that has registered its location in all the areas handled by the MSC / VLR 30a via the I / F 53.

  For example, the paging response from the mobile device 10a is received by the calling / incoming control unit 52 even if the mobile device 10a to which the mobile device identification information included in the call request 3a is attached is out of the service area. If the mobile station 10a cannot acquire the incoming call, it is determined that the mobile station 10a cannot respond to the incoming call. Then, the outgoing / incoming control unit 52 provides the GMSC 90 via the I / F 51 that notifies the mobile device 10a that it cannot respond to the incoming call as the call response 3b. The call response 3b includes mobile device identification information of the mobile device 10a. Further, the outgoing / incoming call control unit 52 inputs the mobile device identification information of the mobile device 10 a determined to be unable to respond to the incoming call to the incoming / outgoing presence registration unit 56.

  In addition, when the paging response from the mobile device 10a is acquired via the I / F 53, the outgoing / incoming call control unit 52 notifies the mobile device 10a that the mobile device 10a can respond to the incoming call as the call response 3b. Provide to GMSC90 via F51. The call request 3a and the call response 3b are exchanged between the GMSC 90 and the MSC / VLR 30 via the HLR / SCF 60.

  Further, the outgoing / incoming control unit 52 determines that a mobile station that cannot acquire a paging response for a predetermined time is out of service for a long time or in a state where the power is turned off for a long time (hereinafter referred to as “Purge state”). Then, the outgoing / incoming control unit 52 deletes the mobile device information from the area information storage unit 41a. Further, the outgoing / incoming call control unit 52 creates a deletion notification including the mobile device identification information of the mobile device from which the mobile device information has been deleted from the area information storage unit 41a, inputs the deletion notification to the I / F 51, and the HLR via the I / F 51. / SCF60.

  The incoming / outgoing presence / absence registration unit 56 registers in the incoming / outgoing presence / absence storage unit 42a whether there is an incoming call to the mobile device in which the area information storage unit 41a stores the mobile device information, but the mobile device could not respond. The incoming / outgoing presence registration unit 56 acquires, from the outgoing / incoming call control unit 52, the mobile device identification information of the mobile device that the outgoing / incoming control unit 52 has determined that it cannot respond to the incoming call. For example, in the case of FIG. 3, the incoming / outgoing presence registration unit 56 acquires the mobile device identification information of the mobile device 10a.

  Thereby, the incoming / outgoing presence registration unit 56 detects that there is an incoming call to the mobile device 10a in which the area information storage unit 41a stores the mobile device information and the mobile device 10a cannot respond. Then, for example, the incoming / outgoing presence / absence registration unit 56 changes the flag associated with the IMUI of the mobile device 10a in the incoming / outgoing presence / absence storage unit 42a shown in FIG. 2 from “off” to “on”. The incoming / outgoing presence registration unit 56 can detect only that there was an incoming call that could not be answered because the mobile device identification information was not input from the outgoing / incoming call control unit 52 when the mobile device 10a could respond to the incoming call. .

  The request processing unit 57 processes the first location registration request from the mobile device. Specifically, the request processing unit 57 determines whether or not the area information storage unit 41a stores the mobile device information included in the first location registration request and notifies that the mobile device can respond. A return notification or a second location registration request for requesting the HLR / SCF 60 to associate the MSC / VLR with which the mobile device is performing location registration with the mobile device is provided to the HLR / SCF 60 according to the determination result.

  4 and 5 and FIG. 1, as described above, the area information storage unit 41a of the MSC / VLR 30a stores the mobile device information of the mobile device 10a, and the area information storage unit 41b of the MSC / VLR 30b moves. The processing performed by the MSC / VLR 30 in the state where the mobile device information of the device 10b is stored will be described as an example.

  First, as shown in FIG. 4, a case where the mobile device 10b transmits the first location registration request 6a to the MSC / VLR 30a will be described. The request processing unit 57 acquires the first location registration request 6a from the mobile device 10b via the I / F 53. The first location registration request 6a includes mobile device identification information and area identification information as mobile device information. The request processing unit 57 searches the area information storage unit 41a based on the mobile device identification information included in the first location registration request 6a, and the area information storage unit 41a searches for the mobile device information included in the first location registration request 6a. Judge whether to memorize.

  Since the area information storage unit 41a does not store the mobile device information of the mobile device 10b, the request processing unit 57 obtains the mobile device identification information of the mobile device 10b and the area identification information included in the first location registration request 6a. Correspondingly, it is newly registered in the area information storage unit 41a as mobile device information. Thereby, the location of the mobile device 10b is newly registered in the MSC / VLR 30a.

  Further, the request processing unit 57 generates a second location registration request 6b for requesting an association between the MSC / VLR 30a, which is an area management device newly registered by the mobile device 10b, and the mobile device 10b. To the HLR / SCF 60. Specifically, the request processing unit 57 creates the second location registration request 6b including the mobile device identification information of the newly registered mobile device 10b and the management device identification information of the MSC / VLR 30a. The second location registration request 6b is provided to the HLR / SCF 60.

  Next, as shown in FIG. 5, the case where the mobile device 10a transmits the first location registration request 6c to the MSC / VLR 30a will be described. As in the case of FIG. 4, the request processing unit 57 acquires the first location registration request 6c from the mobile device 10a, and the area information storage unit 41a stores the mobile device information included in the first location registration request 6c. Judge whether to do.

  The request processing unit 57 determines that the location of the mobile device 10a has already been registered in the MSC / VLR 30a because the area information storage unit 41a stores the mobile device information of the mobile device 10a. Then, the request processing unit 57 compares the area identification information associated with the mobile device identification information of the mobile device 10b stored in the area information storage unit 41a with the area identification information included in the first location registration request 6c. If there is a change, new area identification information is registered in the area information storage unit 41a and updated.

  At this time, the association between the mobile device 10a registered in the HLR / SCF 60 and the MSC / VLR 30a is not changed. Therefore, the request processing unit 57 does not provide the second location registration request as in the case of FIG. Here, the mobile device cannot respond to an incoming call when the power is turned off or outside the service area. Thereafter, when the mobile device turns on the power or returns to the service area, it transmits a first location registration request. Therefore, the request processing unit 57 can detect that the mobile device can respond to an incoming call by acquiring the first location registration request. Similarly, the HLR / SCF 60 can detect that the mobile device can respond to an incoming call by acquiring the second location registration request.

  However, in the case shown in FIG. 5, since the second location registration request is not provided, the HLR / SCF 60 cannot detect that the mobile device 10a has become able to respond as it is. Therefore, the MSC / VLR 30a provides the HLR / SCF 60 via the I / F 51 with a return notification 7 for notifying that the mobile device 10a can respond to an incoming call. Specifically, the request processing unit 57 creates the return notification 7 including the mobile device identification information of the mobile device 10a included in the first location registration request 6c, and inputs the return notification 7 to the I / F 51 to generate the return notification 7 as an HLR. / SCF60.

  The request processing unit 57 further receives an incoming call when the area information storage unit 41a stores the mobile device information of the mobile device 10a and the mobile device 10a is already registered in the MSC / VLR 30a. It is preferable to provide the return notification 7 based on the presence / absence of an incoming call that cannot be answered and stored in the presence / absence storage unit 42a. In this case, the request processing unit 57 searches the incoming / outgoing presence / absence storage unit 42a based on the mobile device identification information of the mobile device 10a included in the first location registration request 6c, and whether there is an incoming call that the mobile device 10a could not respond to. To get. The request processing unit 57 provides the return notification 7 only when there is an incoming call that the mobile device 10a cannot respond to. Specifically, the request processing unit 57 does not create the return notification 7 when the flag of the mobile device 10a is “off”. The request processing unit 57 creates the return notification 7 and inputs it to the I / F 51 only when the flag of the mobile device 10a is “ON”.

  The process shown in FIG. 4 is performed, for example, when the mobile device 10b is in the MSC / VLR 30b where the mobile device 10b has performed location registration, that is, the area that was in the area immediately before transmitting the first location registration request 6a ( This is performed when a new location registration request is made to an MSC / VLR 30a that is different from the MSC / VLR 30b that was in charge of the following (hereinafter referred to as the “final location area”).

  On the other hand, in the process as shown in FIG. 5, for example, the mobile device 10 a newly requests location registration from the MSC / VLR 30 a that was in charge of the final location area where the mobile device 10 a was performing location registration. To be done. In other words, it is performed when there is no change in the MSC / VLR that was in charge of the final area.

  The message providing unit 55 acquires incoming information from the HLR / SCF 60, creates a message including the incoming information, and provides the message to the mobile device. For example, in the case of FIG. 4, incoming information is provided from the HLR / SCF 60 in response to the second location registration request 6 b provided by the request processing unit 57. In the case of FIG. 5, incoming information is provided from the HLR / SCF 60 in response to the return notification 7 provided by the request processing unit 57. Then, the message providing unit 55 acquires incoming information from the HLR / SCF 60 via the I / F 51 and creates a message including the acquired incoming information. The incoming information regarding the mobile devices 10a and 10b is provided in association with the mobile device identification information of the mobile devices 10a and 10b, respectively.

  The message providing unit 55 creates, for example, a short message as a message. The short message is a message provided by a short message service (hereinafter referred to as “SMS”). For example, the message providing unit 55 creates a short message including incoming information as text data. The incoming information includes, for example, presence / absence of an incoming call, information related to a caller, incoming time, and the like. Examples of the information on the caller include a caller's telephone number and address, and a non-notification setting in which the caller has not set a phone number or address. The incoming time is information indicating the time when the call arrives at the core network 20b. The incoming time can be expressed using date, day of the week, time, minute, and the like. In addition, it is preferable that the message providing unit 55 creates a message including information about a caller, an incoming time, and the like as incoming information and provides more detailed incoming information to the mobile device.

  FIG. 6 shows an example of the message 8a provided to the mobile device 10a. The message providing unit 55 creates a message 8a including the sender and incoming call information. In the sender, the name of the communication carrier that is the sender of the message 8a and provides the SMS is set. In the incoming call information, information related to the incoming call time and the caller is set for each incoming call. In FIG. 6, the telephone number “090125345678” of the transmission source and the non notification setting “User unset” are set as information regarding the transmission source. The incoming time is expressed using date, time, and minute.

  The message providing unit 55 registers the created message in the message storage unit 54 in association with the mobile device identification information associated with the incoming information acquired from the HLR / SCF 60. The message storage unit 54 stores the message in association with mobile device identification information indicating the provision destination. And the message provision part 55 inputs a message into I / F53, and provides it to a mobile device via I / F53. According to such a message providing unit 55, the convenience of the mobile devices 10a and 10b is high, and incoming information can be provided to the mobile devices 10a and 10b in a more reliable message format.

  At this time, the message providing unit 55 preferably provides the message by SMS. That is, it is preferable that the message providing unit 55 provides a message to the mobile device by a circuit switching method. Thus, the message providing unit 55 can provide a message to the mobile device when the mobile device is in a state where the message can be received. Therefore, the message providing unit 55 can reliably provide incoming information by the mobile device, and can provide incoming information in real time when the mobile device can confirm the message.

  The message providing unit 55 detects that the mobile device has received the message by acquiring an ack (acknowledgment) for the provided message from the mobile device via the I / F 53. When the message providing unit 55 detects the completion of reception, the message providing unit 55 deletes the corresponding message from the message storage unit 54.

  On the other hand, the message providing unit 55 detects that the message provision has failed because the ack cannot be acquired even after a predetermined time has elapsed. For example, if the mobile device immediately moves out of service area and returns to a state where it cannot respond, the message provision fails. When the message providing unit 55 detects a failure in provision, the message providing unit 55 may delete the corresponding message from the message storage unit 54, or may leave the message without deleting it.

  When the message is deleted from the message storage unit 54 when the provision fails, the message provision unit 55 included in the message that the provision failed from the HLR / SCF 60 when the mobile device is ready to respond next. Incoming call information and incoming call information from when it fails until it becomes ready for the next response are acquired in a lump, including the incoming call information, that is, all incoming call information not provided to the mobile device 1 Two new messages can be created. Therefore, the message providing unit 55 can provide incoming information to the mobile device in a lump, thereby improving the convenience of the mobile device and reducing the load on the mobile device and the radio access network 20a.

  On the other hand, if the message is not deleted from the message storage unit 54 when the provision fails, the message providing unit 55 sends a response from the HLR / SCF 60 to the next response when the mobile device becomes ready for the next response. Only the incoming call information until it becomes ready can be acquired, and in addition to the message that failed to be provided, another message including the incoming call information after that can be newly created. In this case, the message providing unit 55 divides incoming information into a plurality of messages and provides it to the mobile device. However, as a new message, it is only necessary to create a message including only incoming information after provision failure. There is an advantage that the load of the message creation process itself can be reduced.

  Further, the message providing unit 55 requests the HLR / SCF 60 to delete the incoming call information stored in the HLR / SCF 60. The message providing unit 55 creates a deletion request including the mobile device identification information associated with the incoming information that requests deletion, and inputs the deletion request to the I / F 51 to provide the deletion request to the HLR / SCF 60.

  For example, when the message providing unit 55 obtains incoming information from the HLR / SCF 60, creates a message including incoming information, registers it in the message storage unit 54, and provides the mobile device with a message including incoming information. When the ack is acquired from the mobile device and it is detected that the mobile device has received the message, a deletion request is provided to the HLR / SCF 60.

  When the message providing unit 55 detects that the message has failed to be provided and deletes the corresponding message from the message storage unit 54, the message providing unit 55 detects that the mobile device has received the message, and then detects the HLR / The SCF 60 is requested to delete incoming information. As a result, the HLR / SCF 60 keeps storing the incoming call information included in the message that failed to be provided. Therefore, the HLR / SCF 60 receives the incoming information included in the message that has failed to be provided and the incoming information from when it fails until the next ready state can be answered when it becomes ready for the next response. Can be stored together. Therefore, the message providing unit 55 can acquire all incoming information that is not provided to the mobile device.

  On the other hand, when the message providing unit 55 detects a message providing failure and does not delete the corresponding message from the message storage unit 54, the message providing unit 55 obtains the incoming information from the HLR / SCF 60 or the message including the incoming information. Is created and registered in the message storage unit 54, the HLR / SCF 60 may be requested to delete incoming information. As a result, the HLR / SCF 60 deletes the incoming call information included in the message that failed to be provided. For this reason, when it becomes possible to answer the next time, the HLR / SCF 60 can store only incoming call information from when it fails until it becomes ready for the next answer. Therefore, the message providing unit 55 can acquire only the incoming information after the provision failure, and can reduce the amount of information exchanged.

  FIG. 7 shows an example of processing when the mobile device 10a detects that a message has been received. After providing the message 8a to the mobile device 10a, the message providing unit 55 acquires ack8b from the mobile device 10a and detects completion of message reception. Then, the message providing unit 55 provides the delete request 9 including the mobile device identification information of the mobile device 10a to the HLR / SCF 60 via the I / F 51.

  Next, the HLR / SCF 60 will be described in detail. The HLR / SCF 60 includes an HLR 80 and an SCF 70. The HLR 80 is a database that stores correspondence between MSC / VLRs and mobile devices and incoming call information. The HLR 80 includes a correspondence information storage unit 81 and an incoming information storage unit 82.

  The correspondence information storage unit 81 stores the mobile device identification information and the MSC / VLR management device identification information in association with each other. The correspondence information storage unit 81 stores in advance mobile device identification information of all mobile devices subscribed to the mobile communication service provided by the mobile communication system 100. Also, when there is no management device identification information to be associated with the mobile device identification information, such as when the mobile device is in the Purge state, a null value is set in the management device identification information field corresponding to the mobile device identification information, The correspondence information storage unit 81 does not store management device identification information.

  The incoming call information storage unit 82 stores incoming call information related to incoming calls to the mobile device while the mobile device cannot respond. The incoming information storage unit 82 stores incoming information in association with mobile device identification information. FIG. 8 shows an example of the incoming information storage unit 82. The incoming information storage unit 82 stores the IMUI, the active state, and incoming information during a time when the mobile device cannot respond in association with each other. The active state indicates whether or not the incoming information is registered in the incoming information storage unit 82 for each mobile device. The active state includes “active” indicating that the incoming information is registered and “inactive” indicating that the incoming information is not registered. The active state is “inactive” in the initial state. In FIG. 8, the active state of the mobile device with IMUI = 12345678 is “active”, indicating that the incoming call information is registered.

  The SCF 70 is a service control apparatus that performs various controls such as transmission from a mobile device, control related to an incoming call to the mobile device, association between the mobile device and an MSC / VLR, and storage and provision of incoming information. The SCF 70 includes an I / F 71 that is an interface with the MSC / VLRs 30 a and 30 b and the GMSC 90, an outgoing / incoming control unit 72, an incoming information registration unit 73, a request processing unit 74, and an incoming information provision unit 75.

  The outgoing / incoming control unit 72 controls the transmission from the mobile device and the incoming call to the mobile device. A part performed by the HLR / SCF 60 as incoming processing will be described with reference to FIGS. 3 and 1. Hereinafter, the mobile device 10a performs location registration with the MSC / VLR 30a, and the correspondence information storage unit 81 stores the mobile device identification information of the mobile device 10a and the management device identification information of the MSC / VLR 30a in association with each other. An example will be described.

  First, as shown in FIG. 3, when the line setting request 1 for the mobile device 10a arrives at the GMSC 90 and there is an incoming call to the mobile device 10a, the outgoing / incoming control unit 72 sends an active state inquiry 2a from the GMSC 90 to the I / O. Obtained via F71. The active state inquiry 2a includes mobile unit identification information of the mobile unit 10a that has received an incoming call.

The outgoing / incoming control unit 72 searches the incoming call information storage unit 41a based on the mobile device identification information included in the active state inquiry 2a, and acquires the active state of the mobile device 10a. The outgoing / incoming control unit 72 provides the active state response 2b including the acquired active state to the GMSC 90 via the I / F 71.

  Next, the outgoing / incoming control unit 72 acquires the call request 3a of the mobile device 10a from the GMSC 90 via the I / F 71. The outgoing / incoming control unit 72 searches the correspondence information storage unit 81 based on the mobile device identification information included in the call request 3a, and acquires the associated management device identification information. Thereby, the outgoing / incoming control unit 72 detects the MSC / VLR 30a in which the mobile device 10a that is the target of the call request 3a is performing location registration. The outgoing / incoming control unit 72 transfers the call request 3a from the GMSC 90 to the detected MSC / VLR 30a. Then, the outgoing / incoming control unit 72 acquires the call response 3b from the MSC / VLR 30a via the I / F 71. The outgoing / incoming control unit 72 transfers the acquired call response 3b to the GMSC 90 via the I / F 71.

  When the correspondence information storage unit 81 does not store the management device identification information associated with the mobile device identification information included in the call request 3a, the mobile station is in the Purge state. It is judged that. Therefore, the outgoing / incoming control unit 72 can detect that the mobile device cannot respond to the incoming call at this time. Therefore, the call incoming / outgoing control unit 72 provides the GMSC 90 with a call response notifying that the call cannot be answered without transferring the call request.

  Furthermore, the outgoing / incoming call control unit 72 acquires the activation / termination request 5 from the GMSC 90 via the I / F 71. The start / end request 5 is a request for starting or ending registration of incoming information in the incoming information storage unit 82. The start / end request 5 includes mobile device identification information of a mobile device that is a target of registration start or registration end of incoming information. The call origination / termination control unit 72 that has acquired the activation / termination request 5 designates the mobile device identification information included in the activation / termination request 5, and starts or ends the registration of the incoming information of the mobile device. 73 is instructed.

  Specifically, the call response 3b notifies that the mobile device 10a cannot respond. When the active state of the incoming call information storage unit 82 is “inactive”, the outgoing / incoming call control unit 72 cannot respond to the incoming call. For the mobile device in the state, the start / end request 5 for requesting the start of registration of the incoming information in the incoming information storage unit 82 is acquired.

  On the other hand, the call response 3b notifies that the mobile device 10a can respond. When the active state of the incoming call information storage unit 82 is “active”, the outgoing / incoming control unit 72 can respond to incoming calls. For the mobile device, an activation / termination request 5 for requesting termination of registration of the incoming call information in the incoming call information storage unit 82 is acquired.

Note that the outgoing / incoming control unit 72 can detect whether or not the mobile device 10a can respond to an incoming call by the call response 3b from the MSC / VLR 30a without acquiring the start / end request 5 from the GMSC 90. Furthermore, the outgoing / incoming call control unit 72 can detect the active state of the mobile device 10a by searching the incoming call information storage unit 82. Therefore, the outgoing / incoming control unit 72 determines whether or not it is necessary to instruct the start or end of registration of incoming information based on the call response 3b from the MSC / VLR 30a and the active state.
The mobile device identification information may be designated to instruct the incoming information registration unit 73 to start or end registration.

  Further, the incoming / outgoing control unit 72 inputs the incoming call information related to the incoming call that the mobile device could not respond to the incoming call information registration unit 73 in association with the mobile device identification information. In the case of FIG. 3, the outgoing / incoming control unit 72 inputs information related to the transmission source of the line setting request 1, the time when the line setting request 1 arrived at the core network 20 b, etc., to the incoming information registration unit 73 as incoming information. The outgoing / incoming control unit 72 inputs incoming information based on information related to incoming calls included in the call request 3a, the time when the outgoing / incoming control unit 72 acquires the call request 3a, and the like.

  For example, the outgoing / incoming call control unit 72 acquires information about the caller from the call request 3 a and inputs the information to the incoming call information registration unit 73. In addition, if the call request 3a includes the time when the GMSC 90 received the line setting request 1, the call control unit 72 acquires it and inputs it to the incoming information registration unit 73 as the incoming time. When the incoming call time is not included in the call request 3a, the outgoing / incoming call control unit 72 inputs the time when the outgoing / incoming call control unit 72 acquires the call request 3a to the incoming call information registration unit 73 as the incoming call time.

  Here, the call request 3a and the call response 3b exchanged between the GMSC 90 and the MSC / VLR 30a by the HLR / SCF 60 will be described in detail with reference to FIG. The GMSC 90 actually provides the SLR (Send Routing Information) 31a to the HLR / SCF 60 as the call request 3a. When transferring the call request 3a to the MSC / VLR 30a, the HLR / SCF 60 actually changes the SRI 31a to a PRN (Pursuit Routing Number) 32a and provides it to the MSC / VLR 30a.

  The HSC / VLR 30a provides the HLR / SCF 60 with a PRN ack 32b that is actually a response to the PRN 32a as the call response 3b. When transferring the call response 3b to the GMSC 90, the HLR / SCF 60 actually changes the PRN ack 32b to the SRI ack 31b and provides it to the GMSC 90. Further, the HLR / SCF 60 acquires, for example, an initial DP (Detection Point) 5 a as the activation request 5.

  The incoming call information registration unit 73 registers incoming call information related to an incoming call to the mobile device while the mobile device cannot respond to the incoming call information storage unit 82. The incoming call information registration unit 73 receives from the outgoing / incoming call control unit 72 an instruction to start or end registration of incoming call information specifying mobile device identification information. The incoming information registration unit 73 starts registration of incoming information related to the mobile device having the designated mobile device identification information in response to an instruction to start registration, and the designated mobile device identification information in response to an instruction to end registration. The registration of the incoming information about the mobile device is terminated.

The incoming call information registration unit 73 changes the activation status of the specified mobile device identification information in the incoming call information storage unit 82 from “inactive” to “active” in the case of registration start instruction, In this case, change from “active” to “inactive”.

  While the active state is “active”, the incoming call information registration unit 73 acquires the incoming call information associated with the mobile device identification information associated with the mobile device identification information from the outgoing / incoming call control unit 72. The incoming information registration unit 73 registers the acquired incoming information in the incoming information storage unit 82 in association with the mobile device identification information.

  Further, the incoming call information registration unit 73 deletes the incoming call information from the incoming call information storage unit 82. The incoming call information registration unit 73 receives from the incoming call information provision unit 75 an instruction to delete incoming call information specifying mobile device identification information. The incoming information registration unit 73 deletes the incoming information associated with the designated mobile device identification information from the incoming information storage unit 82.

  The request processing unit 74 processes the second location registration request from the MSC / VLR. The process performed by the HLR / SCF 60 will be described using FIG. 1 and FIG. 4 as an example in which the second location registration request 6b is provided from the MSC / VLR 30a to the HLR / SCF 60. The request processing unit 74 acquires the second location registration request 6b from the MSC / VLR 30a via the I / F 71. At this time, the correspondence information storage unit 81 stores management device identification information of the MSC / CLR 30b in association with the mobile device identification information of the mobile device 10b. Therefore, the request processing unit 74 first identifies the management device identification of the MSC / VLR 30a included in the second location registration request 6b in association with the mobile device identification information of the mobile device 10b included in the acquired second location registration request 6b. The information is registered in the correspondence information storage unit 81, and the MSC / VLR in which the mobile device 10b performs position registration is updated to the MSC / VLR 30a.

  Further, the request processing unit 74 sends the mobile device 10b included in the second location registration request 6b to the MSC / VLR 30b to which the management device identification information stored in the correspondence information storage unit 81 before update is added. The mobile device identification information is designated and the mobile device information is instructed to be deleted. Specifically, the request processing unit 74 creates a mobile device information deletion instruction specifying the mobile device identification information of the mobile device 10b, and inputs the mobile device information deletion instruction to the I / F 71, whereby the MSC / VLR 30b is transmitted via the I / F 71. Provide delete instructions to. Then, the request processing unit 74 inputs the second location registration request 6 b to the incoming call information providing unit 75.

  Further, when the request processing unit 74 acquires a deletion notification including the mobile device identification information of the mobile device that has deleted the mobile device information from the MSC / VLR when the mobile device is in the Purge state, The management device identification information associated with the mobile device identification information is deleted from the correspondence information registration unit 81.

  The incoming call information providing unit 75 acquires the incoming call information from the incoming call information storage unit 82 based on the return notification or the second location registration request provided from the MSC / VLR, and provides it to the mobile device. 1 and 4, when the second location registration request 6b is provided from the MSC / VLR 30a shown in FIG. 4 to the HLR / SCF 60, and the return notification 7 is sent from the MSC / VLR 30a shown in FIG. The processing performed by the HLR / SCF 60 will be described by taking the case where it is provided to the / SCF 60 as an example.

  In the case of FIG. 4, the incoming call information providing unit 75 acquires the second location registration request 6 b from the MSC / VLR 30 a from the request processing unit 74. Thereby, the incoming call information providing unit 75 detects that the mobile device 10b can respond to the incoming call. The incoming call information providing unit 75 searches the incoming call information storage unit 82 based on the mobile device identification information of the mobile device 10b included in the second location registration request 6b, and the mobile device 10b during which the mobile device 10b has failed to respond. Get incoming call information. The incoming call information providing unit 75 inputs the received incoming call information 8 to the mobile device 10b to the I / F 71 and provides it to the MSC / VLR 30a via the I / F 71. In this way, the incoming call information providing unit 75 provides the incoming call information to the mobile device 10b via the MSC / VLR 30a. Thus, the method by which the incoming information providing unit 75 provides incoming information to the mobile device is not limited.

  In the case of FIG. 5, the incoming call information provision unit 75 acquires the return notification 7 from the MSC / VLR 30a via the I / F 71. Thereby, the incoming call information providing unit 75 detects that the mobile device 10a can respond to the incoming call. The incoming call information providing unit 75 searches the incoming call information storage unit 82 based on the mobile device identification information of the mobile device 10a included in the return notification 7 and receives the incoming information of the mobile device 10a during which the mobile device 10a could not respond. To get. The incoming information providing unit 75 provides the incoming information 8 to the mobile device 10a by providing the received incoming information 8 to the mobile device 10a to the MSC / VLR 30a via the I / F 71.

  The incoming call information provision unit 75 instructs the incoming call information registration unit 73 to delete the incoming call information provided to the mobile device from the incoming call information storage unit 82. The incoming call information providing unit 75 may instruct the deletion of the incoming call information when the incoming call information is provided, and instruct the deletion of the incoming call information in accordance with the deletion request 9 from the MSC / VLR as shown in FIG. May be. However, if the message is deleted when the MSC / VLR detects a failure to provide the message to the mobile device, the incoming information providing unit 75 instructs the deletion according to the deletion request 9. The incoming call information providing unit 75 acquires a deletion request from the MSC / VLR via the I / F 71.

  Next, the GMSC 90 will be described in detail. As shown in FIG. 1, the GMSC 90 includes an I / F 91 that is an interface with the HLR / SCF 60 and the MSC / VLRs 30a and 30b, a control unit 92, and an I / F 93 that is an interface with the network 20c.

  The control unit 92 performs control related to transmission from the mobile device and incoming call to the mobile device. The incoming call process performed by the GMSC 90 will be described with reference to FIGS. 1 and 3. First, the control unit 92 acquires a call such as a line setting request 1 for the mobile device 10a via the I / F 93. When there is an incoming call, the controller 92 first provides the active state inquiry 2a to the HLR / SCF 60 via the I / F 91 and acquires the active state response 2b via the I / F 91. Thereby, the control part 92 detects the active state of HLR / SCF60. Thereafter, the control unit 92 provides the call request 3a to the HLR / SCF 60 via the I / F 91 and acquires the call response 3b via the I / F 91. Thereby, the control unit 92 can process the incoming call by detecting whether the mobile device 10a that has received the incoming call can respond.

  When the control unit 92 detects “inactive” as the active state and detects that the mobile device 10a cannot respond to the incoming call, the control unit 92 sends the incoming information of the mobile device 10a to the incoming information storage unit 82. Is provided to the HLR / SCF 60 via the I / F 91. On the other hand, when the control unit 92 detects “active” as the active state and detects that the mobile device 10a is ready to receive an incoming call, the control unit 92 receives the incoming information of the incoming information of the mobile device 10a. An activation / termination request 5 for requesting termination of registration in the storage unit 82 is provided to the HLR / SCF 60 via the I / F 91. When the outgoing / incoming control unit 72 of the HLR / SCF 60 instructs the registration start / end of the incoming information to the incoming information storage unit 82, the control unit 92 can omit the inquiry about the active state.

[Incoming call information provision method]
Next, a method for providing incoming information in the mobile communication system 100 shown in FIG. 1 will be described with reference to FIG. As shown in FIG. 10, the GMSC 90 receives a call to the mobile device 10a from the network 20c, and an incoming call is made (S101). The GMSC 90 inquires of the HLR / SCF 90 about the active state, and acquires “inactive” as the active state regarding the mobile device 10a (S102). The GMSC 90 provides a call request for the mobile device 10a to the MSC / VLR 30a via the HLR / SCF 60 (S103). Then, the MSC / VLR 30a provides a paging request to all the mobile devices in the assigned area including the mobile device 10a (S104).

  Since the MSC / VLR 30a cannot acquire the paging response from the mobile device 10a, the MSC / VLR 30a detects that the mobile device 10a cannot respond to the incoming call. Then, the MSC / VLR 30a registers in the incoming call presence / absence storage unit 42a that there was an incoming call that the mobile device 10a could not respond to (S105). The MSC / VLR 30a provides a call response for notifying that the mobile device 10a cannot respond to the incoming call to the GMSC 90 via the HLR / SCF 60 (S106).

  Since the activation state is “inactive”, the GMSC 90 provides the HLR / SCF 60 with an activation / termination request for requesting the start of registration of incoming information (S107). The HLR / SCF 60 updates the activation state of the incoming information storage unit 82 to “active” and registers the incoming information of the mobile device 10a (S108). Here, it is assumed that the mobile device 10b that has registered the location with the MSC / VLR 30b cannot respond to the incoming call, and the HLR / SCF 60 stores the incoming call information in the incoming call information storage unit 82.

  Thereafter, when the mobile devices 10a and 10b return within the area covered by the MSC / VLR 30a, the first location registration request is provided to the MSC / VLR 30a (S109). The MSC / VLR 30a determines whether or not the area information storage unit 41a stores the mobile device information of the mobile devices 10a and 10b (S110). Since the MSC / VLR 30a has returned to an area different from the final area, the mobile station 10b that does not store mobile station information provides the second location registration request to the HLR / SCF 60 (S111).

  On the other hand, in step (S110), the MSC / VLR 30a has returned to the same area as the last service area, and therefore, for the mobile device 10a storing the mobile device information, the incoming call presence / absence storage unit 42a responds to the mobile device 10a. It is determined whether or not it is stored that there was an incoming call that could not be made (S112). Since the MSC / VLR 30a stores that there is an incoming call, the MSC / VLR 30a provides a return notification to the HLR / SCF 60 (S113). On the other hand, if the MSC / VLR 30a does not store that there is an incoming call, the process is terminated.

  Based on the return notification or the second location registration request provided from the MSC / VLR 30a, the HLR / SCF 60 transmits the incoming information from the incoming information storage unit 82 while the mobile devices 10a and 10b cannot respond to the mobile devices 10a and 10b. Is provided to the MSC / VLR 30a (S114). The MSC / VLR 30a creates a message including the acquired incoming call information (S115). The MSC / VLR 30a provides the created message to the mobile devices 30a and 30b (S116). In this way, incoming information is provided from the HLR / SCF 60 to the mobile devices 10a and 10b via the MSC / VLR 30a.

  The MSC / VLR 30a provides the HLR / SCF 60 with a request for deleting the incoming information provided to the mobile devices 10a and 10b (S117). In response to the deletion request, the HLR / SCF 60 deletes the incoming call information of the mobile devices 10a and 10b from the incoming call information storage unit 82 (S118).

〔effect〕
According to the mobile communication system 100, the MSC / VLR 30a, 30b, the HLR / SCF 60, and the incoming call information providing method, as shown in FIG. 5, the mobile device information included in the first location registration request is stored in the area information storage unit 41a. If the mobile station 10a transmits the first location registration request 6c to the same MSC / VLR 30a and the second location registration request is not provided to the HLR / SCF 60, the MSC / VLR 30a sends a return notification 7 It can be provided to HLR / SCF60. On the other hand, as shown in FIG. 4, when the area information storage unit 41a does not store the mobile device information included in the first location registration request 6a, that is, the MSC different from the MSC / VLR 30b in which the mobile device 10a has registered the location. When the first location registration request 6a is transmitted to / VLR 30a, the MSC / VLR 30a can provide the second location registration request 6b to the HLR / SCF 60.

  Therefore, the HLR / SCF 60 moves according to either the return notification provided from the MSC / VLR or the second location registration request, regardless of which MSC / VLR the mobile device transmits the first location registration request to. It is possible to reliably detect that the machine has newly sent the first location registration request and is ready to respond. Furthermore, the HLR / SCF 60 registers and stores incoming information in the incoming information storage unit 82 while the mobile station cannot respond to incoming calls. Therefore, the HLR / SCF 60 acquires incoming call information from the incoming call information storage unit 82 while the mobile station cannot respond to the incoming call based on the return notification or the second registration request, and reliably transmits the incoming call information to the mobile station that is ready to respond. Can be provided. As described above, since the core network 20b can manage the incoming information and provide it to the mobile device with certainty, the user of the mobile device can surely check the incoming information while it cannot respond to the incoming call, and the convenience of the user can be improved.

  Further, the MSC / VLR 30a includes an incoming / outgoing presence / absence storage unit 42a and an incoming / outgoing presence / absence registration unit 56, and the request processing unit 57 provides a return notification based on the presence / absence of an incoming call stored in the incoming / outgoing presence / absence storage unit 42a. The MSC / VLR 30a can register and store the presence / absence of an incoming call that the mobile station has failed to answer in the incoming / outgoing presence / absence storage unit 42a. The MSC / VLR 30a transmits the first location registration request to the same MSC / VLR 30a, and the second location registration request is not provided to the HLR / SCF 60, and the mobile device cannot respond. A return notification can be provided to the HLR / SCF 60 only when there is an incoming call. Therefore, the mobile communication system 100 can surely provide the incoming information to the mobile device that is ready to respond only when there is incoming information while the mobile device cannot respond to the incoming call. In addition, since the mobile communication system 100 can omit the return notification when there is no incoming call that the mobile station cannot respond to, the control load on the MSC / VLR 30a, 30b and the HLR / SCF 60 can be reduced.

  In addition, the HLR / SCF 60 stores and manages incoming call information, so that the mobile device identification information stored in advance by the HLR 80 can be used. If the HLR / SCF 60 is in the Purge state, the mobile device There is an advantage that it is possible to detect whether or not can respond to an incoming call.

[Example of change]
In addition, this invention is not limited to the said embodiment, A various change is possible. In the mobile communication system 100 shown in FIG. 1, the MSC 50a includes a message providing unit 55, and the MSC 50a creates a message including incoming information provided from the HLR / SCF 60 to the mobile device, and provides the message to the mobile device. A mobile communication system 200 as shown in FIG. 11 may be used.

  In the mobile communication system 200, an IWMSC (InterWorking MSC) 255 functions as a message providing unit that creates a message including incoming information and provides the message to the mobile device, and a SMS Message (Short Message Service Center) 254 stores the message. It functions as a part. Therefore, in the mobile communication system 200, the MSC / VLR 230a including the MSC 250a in which the message storage unit 54 is omitted can be used. Similarly, instead of the MSC / VLR 30b, the MSC / VLR 230b including the MSC 250b in which the message storage unit is omitted can be used.

  In this case, as shown in FIG. 12, when the second location registration request 6b is provided to the HLR / SCF 60, or when the return notification 7 is provided to the HLR / SCF 60 as shown in FIG. The incoming call information providing unit 75 of the HLR / SCF 60 provides the incoming call information 8 to the IWMSC 255. Then, as shown in FIG. 14, the IWMSC 255 creates a message 8a including incoming call information, and registers it in the SMSC 254 in association with the mobile device identification information. The SMSC 254 stores the message 8a in association with the mobile device identification information. The IWMSC 255 acquires the message 8a from the SMSC 254, and inquires of the HLR / SCF 60 about the MSC / VLR for which the mobile device 10a to which the message 8a is provided is registered. The incoming information providing unit 75 of the HLR / SCF 60 responds to the inquiry and notifies the management device identification information of the MSC / VLR 230a that is performing location registration. The IWMSC 255 provides the created message 8a to the MSC / VLR 230a notified of the management device identification information from the HLR / SCF 60.

  Then, the message providing unit 55 of the MSC / VLR 230a acquires the message 8a and provides it to the mobile device 10a. Thus, when the IWMSC 255 creates and provides a message, the message providing unit 55 only needs to transfer the message to the mobile device 10a. When the message providing unit 55 of the MSC / VLR 230a obtains the ack8b from the mobile device 10a, the message providing unit 55 provides the delete request 9 to the HLR / SCF 60 and also provides the delete request 9a to the IWMSC 255. This deletion request 9a requests the IWMSC 255 to delete the message 8a stored in the SMSC 254. As a result, the IWMSC 255 deletes the message 8a from the SMSC 254. In the mobile communication system 200 shown in FIGS. 11 to 14, the same reference numerals are given to the substantially same configurations as those of the mobile communication system 100 shown in FIGS. 1, 4, 5, and 7. Description is omitted.

  The incoming call information providing method in the mobile communication system 200 shown in FIG. 11 will be described with reference to FIG. First, steps (S201) to (S213) similar to steps (S101) to (S113) shown in FIG. 10 are performed. Based on the return notification or the second location registration request, the HLR / SCF 60 provides IWMSC 255 to provide incoming information from the incoming information storage unit 82 to the mobile devices 10a and 10b while the mobile devices 10a and 10b cannot respond. (S214). The IWMSC 255 creates a message including the acquired incoming call information (S215).

  The IWMSC 255 registers the created message in the SMSC 254 (S216). The SMSC 254 stores the message (S217). The IWMSC 255 acquires the message 8a from the SMSC 254 (S218), and inquires of the HLR / SCF 60 about the MSC / VLR for which the mobile device 10a to which the message 8a is provided is registered (S219). Then, the HLR / SCF 60 makes a response notifying the MSC / VLR 230a (S220).

  The IWMSC 255 provides the created message 8a to the MSC / VLR 230a notified from the HLR / SCF 60 (S221). Then, the MSC / VLR 230a provides a message to the mobile devices 10a and 10b (S222). The MSC / VLR 230a provides the delete request 9 to the HLR / SCF 60 (S223). In response to the deletion request, the HLR / SCF 60 deletes the incoming information of the mobile devices 10a and 10b from the incoming information storage unit 82 (S224). Further, the MSC / VLR 230a also provides the deletion request 9a to the IWMSC 255 (S225). Then, the IWMSC 255 deletes the message from the SMSC 254 (S226).

  Thus, in the mobile communication system 200, the HLR / SCF 60 can provide incoming information to the mobile devices 10a and 10b via the IWMSC 255 and the MSC / VLR 230a and 230b. In such a mobile communication system 200, the message is stored in the SMSC 254, and it is possible not to delete the message from the SMSC 254 when the message is not provided to the mobile station. Therefore, when the mobile device becomes ready to respond next, the IWMSC 255 acquires only the incoming information from the HLR / SCF 60 until it becomes ready for the next response, and failed to provide it. In addition to the message, another message including incoming information can be newly created. In this case, the IWMSC 255 divides the incoming information into a plurality of messages and provides them to the mobile device. However, as a new message, a message including only the incoming information after the failure of provision only needs to be created. There is a merit that can reduce the load of itself.

It is a block diagram which shows the structure of the mobile communication system which concerns on embodiment of this invention. It is a figure which shows the incoming / outgoing presence memory | storage part which concerns on embodiment of this invention. It is a figure which shows the incoming call process which concerns on embodiment of this invention. It is a figure which shows the process in case the mobile device which concerns on embodiment of this invention transmits a 1st location registration request to different MSC / VLR. It is a figure which shows the process in case the mobile apparatus which concerns on embodiment of this invention transmits a 1st location registration request to the same MSC / VLR. It is a figure which shows the message which concerns on embodiment of this invention. It is a figure which shows the request | requirement of provision and deletion of the incoming call information by MSC / VLR which concerns on embodiment of this invention. It is a figure which shows the incoming call information storage part which concerns on embodiment of this invention. It is a figure which shows the call request and call response which concern on embodiment of this invention. It is a flowchart which shows the procedure of the incoming call information provision method which concerns on embodiment of this invention. It is a block diagram which shows the structure of the mobile communication system which concerns on the example of a change of this invention. It is a figure which shows the process in case the mobile device which concerns on the example of a change of this invention transmits a 1st location registration request to different MSC / VLR. It is a figure which shows the process in case the mobile apparatus which concerns on the example of a change of this invention transmits a 1st location registration request to the same MSC / VLR. It is a figure which shows provision of the incoming call information by IWMSC which concerns on the example of a change of this invention. It is a flowchart which shows the procedure of the incoming call information provision method which concerns on the example of a change of this invention. It is a figure which shows the conventional incoming call process.

Explanation of symbols

10a, 10b, 310 Mobile device 20a Radio access network 20b Core network 20c Network 30a, 30b, 230a, 230b, 330 MSC / VLR
40a, 40b VLR
41a, 41b Area information storage unit 42a, 42b Incoming / outgoing presence storage unit 50a, 50b, 250a, 250b MSC
51, 53, 71, 91, 93 I / F
52, 72 outgoing / incoming control unit 54 message storage unit 55 message providing unit 56 incoming / outgoing presence registration unit 57, 74 request processing unit 60 HLR / SCF
70 SCF
73 Incoming call information registration part 75 Incoming call information provision part 80 HLR
81 Corresponding information storage unit 82 Incoming call information storage unit 90,390 GMSC
92 Control unit 100, 200 Mobile communication system 254 SMSC
255 IWMSC

Claims (6)

A mobile communication system comprising: an area management device that accepts a first location registration request for an area in charge from a mobile device; and a control device that associates the area management device with the mobile device.
The area management device
An area information storage unit that stores mobile device information related to the mobile device that has received the first location registration request;
It is determined whether or not the area information storage unit stores the mobile device information included in the first location registration request, and a return notification for notifying that the mobile device can respond or the association is requested. A request processing unit that provides a second location registration request to the control device according to the determination result;
The control device includes:
An incoming call information storage unit for storing incoming call information related to incoming calls to the mobile device while the mobile device cannot respond;
An incoming call information registration unit for registering the incoming call information in the incoming call information storage unit;
An incoming call information providing unit that obtains the incoming call information from the incoming call information storage unit based on the return notification or the second location registration request provided from the area management device and provides the incoming call information to the mobile device. A mobile communication system.   The mobile communication system according to claim 1, further comprising a message providing unit that acquires the incoming information from the control device, creates a message including the incoming information, and provides the message to the mobile device. An area management device that accepts a first location registration request to a responsible area from a mobile device,
An area information storage unit that stores mobile device information related to the mobile device that has received the first location registration request;
It is determined whether the area information storage unit stores the mobile device information included in the first location registration request, the area management device is associated with the mobile device, and the mobile device cannot respond while the mobile device cannot respond. A control device that stores incoming information related to incoming calls to a mobile device is provided with a return notification for notifying that the mobile device has become available in response to the determination result or a second location registration request for requesting the association. An area management apparatus comprising: a request processing unit. The area information storage unit is an incoming call to a mobile device that stores mobile device information, and an incoming / outgoing presence storage unit that stores the presence or absence of an incoming call that the mobile device could not respond to;
An incoming / outgoing presence / absence registration unit that registers the presence / absence of an incoming call that could not be answered in the incoming / outgoing presence / absence storage unit;
The area management apparatus according to claim 3, wherein the request processing unit provides the return notification based on the presence or absence of an incoming call stored in the incoming call presence / absence storage unit. A control device that associates the mobile device with an area management device that accepts a first location registration request to the area in charge from the mobile device,
An incoming call information storage unit for storing incoming call information related to incoming calls to the mobile device while the mobile device cannot respond;
An incoming call information registration unit for registering the incoming call information in the incoming call information storage unit;
The incoming call information is acquired from the incoming call information storage unit based on a return notification for notifying that the mobile device is ready to respond provided from the area management device or a second location registration request for requesting the association. And an incoming call information providing unit provided to the mobile device. A method for providing incoming information in a mobile communication system, comprising: an area management device that accepts a first location registration request for a responsible area from a mobile device; and a control device that associates the area management device with the mobile device. ,
The area management device determines whether or not the mobile device information included in the first location registration request is stored as mobile device information related to the mobile device that has received the first location registration request;
Providing the control device with a return notification for notifying that the mobile device can respond according to the determination result or a second location registration request for requesting the association;
The control device registers the incoming information in an incoming information storage unit that stores incoming information related to incoming calls to the mobile device while the mobile device cannot respond,
An incoming call information providing method, wherein the incoming call information is acquired from the incoming call information storage unit based on the return notification or the second location registration request provided from the area management device and provided to the mobile device. .

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