JP6799488B2 - Communication control server and communication system - Google Patents

Description

The present invention relates to a communication control server and a communication system that control communication with respect to a communication terminal.

In Patent Document 1 below, when the MME (Mobility Management Entity) is temporarily stopped due to a failure and then restarted, the Paging process using the IMSI (International Mobile Subscriber Identity) received from the S-GW is performed by the UE (User Equipment). It is described to be done for. As a result, the MME can cause the UE to perform the attach process.

Japanese Unexamined Patent Publication No. 2012-147410

Due to a predetermined factor such as restarting the P-GW, the bearer of the S5 / S8 interface, which is an interface between the S-GW and the P-GW constituting the core network, may be released at an unintended timing. The bearer status of the S5 / S8 interface is synchronized between the core network side and the mobile device, but when the mobile device goes out of service, the synchronization cannot be performed. Therefore, although the mobile device stores the state information that the core network can communicate, in reality, the bearer is released in the core network and communication is impossible.

The technique described in Patent Document 1 is based on the premise that the bearer of the S5 / S8 interface between the S-GW and the P-GW is maintained when the MME resumes from the faulty state. If the bearer of the S5 / S8 interface is not maintained, the P-GW cannot forward the packet to the S-GW and cannot send a DDN (Downlink Data Notification) signal to the MME. .. Therefore, the MME cannot perform the Paging process on the UE which is a mobile device.

Therefore, an object of the present invention is to provide a communication control server and a communication system capable of promptly resolving a state in which a bearer is released in a core network.

In order to solve the above-mentioned problems, the communication system of the present invention is a communication system including one or more communication control servers, a maintenance terminal which is an external terminal, and a management server. Is an area information storage unit that stores profile information including identification information of a mobile terminal and area information indicating a place where the mobile terminal is located, and a mobile terminal to be reset from an external terminal. The receiving unit that receives the paging request command including the identification information and the identification information included in the paging request command received by the receiving unit are included in the profile information stored in the area information storage unit. When it is determined by the territory determination unit that determines whether or not the occupancy is included in the profile information, the base station corresponding to the territory information included in the profile information is determined. When the paging process is performed based on the identification information and the area determination unit determines that the information is not included in the profile information, the location registration by the mobile terminal indicated by the identification information is performed for all the base stations under the control. The management server includes a communication control unit that performs paging processing based on an identifier that is sometimes issued, and the management server determines whether or not communication is possible by the communication determination unit that determines whether or not communication with the network is possible and the communication determination unit. The maintenance terminal is provided with a reset request unit that instructs the maintenance terminal of the destination information of the mobile terminal and transmits a reset request of the mobile terminal, and the maintenance terminal resets the mobile terminal from the reset request unit. Upon receiving the request, the mobile terminal is provided with a paging request unit that derives the identification information of the mobile terminal from the destination information of the mobile terminal, generates a paging request command including the identification information, and transmits the paging request command to the communication control server. ..

According to the present invention, the paging process can be performed based on a signal from a maintenance terminal or the like. Therefore, even if the bearer of the interface in the core network, for example, the S5 / S8 interface is released, the paging process can be performed, and the bearer of the interface can be reestablished.

According to the present invention, even if there is a state in which the bearer is released in the core network, that state can be resolved at an early stage.

It is a figure which shows the system structure of the communication system including the MME100 of this embodiment. It is a figure which shows the processing outline of MME100 of this embodiment. It is a block diagram which shows the functional structure of MME 100. It is a block diagram which shows the functional structure of maintenance terminal 500. It is a flowchart which shows the operation of MME 100. The processing sequence diagram in the communication system of this embodiment is shown. It is a figure which shows the system configuration of the communication system in the modification. It is a block diagram which shows the functional structure of maintenance terminal 500a. It is a figure which shows the processing sequence of the communication system in the modification. It is a figure which shows the system configuration of the communication system in another modification. It is a functional block diagram of P-CSCF600b1 in another modification. It is a figure which shows the processing sequence of the communication system in another modification. It is a figure which shows an example of the hardware configuration of MME100 which concerns on this embodiment and a modification.

An embodiment of the present invention will be described with reference to the accompanying drawings. When possible, the same parts are designated by the same reference numerals and duplicate description is omitted.

FIG. 1 is a diagram showing a system configuration of a communication system including the MME 100 of the present embodiment. As shown in FIG. 1, this communication system includes MME (Mobility Management Entity) 100, S-GW (Serving Gateway) 200, P-GW 300 (PDN Gateway), PCRF (Policy and Charging Rules Function) 400, maintenance terminal 500, and so on. It is configured to include an external server 600, an eNodeB 700, and a mobile device 800. In addition, MME100, S-GW200, P-GW300, and PCRF400 form a core network called EPC (Envolved Packet Core).

The MME 100 is an exchange that accommodates a base station, eNodeB, and provides mobility control and bearer control functions. The MME 100 is arranged for each area, and one or more MME 100s are arranged for one area.

The S-GW 200 is a packet switch in the service area that accommodates the base station eNodeB.

The P-GW 300 is a gateway device for connecting to a PDN, and is an exchange that assigns an IP address and transfers a packet to the S-GW 200. In addition, in cooperation with PCRF400, QoS control, bearer setting control, and the like are performed.

The PCRF400 is a logical node that controls QoS and billing of user data transfer.

The maintenance terminal 500 is a terminal that manages the MME 100, and is a portion that transmits a paging request command to the MME 100 by an operator operation. The MME 100 makes a paging request to the mobile device 800 in response to the paging request command.

The external server 600 is a server that is arranged on the network and provides a packet distribution service to the mobile device 800.

The eNodeB 700 is a base station and is a part that performs wireless communication with the mobile device 800.

The mobile device 800 is a terminal held by the user and is a terminal capable of receiving packets delivered from the external server 600 via the eNodeB 700.

An outline of processing of such a communication system will be described with reference to FIG. As shown in FIG. 2, the bearer of the S5 / S8 interface between the S-GW 200 and the PP-GW 300 is released. As described above, this is caused by various factors such as the restart of the P-GW 300.

When the external server 600 distributes data to the mobile device 800 in a situation where the bearer of the S5 / S8 interface is released, the P-GW 300 transmits the data from the external server 600 to the S-GW 200. I can't. Since the administrator of the external server 600 can know from an error notification or the like that the packet could not be delivered, he / she notifies the operator maintenance person to that effect. At that time, since the external server administrator knows information such as which area the packet addressed to which mobile device 800 could not be transmitted, the information (telephone number of the mobile device and the approximate position of the mobile device) is used. Tell the operator maintainer.

The maintenance terminal 500 and the MME 100 are communicably connected by a dedicated line called a maintenance interface, and the operator maintenance operator can use the IMSI and MME100pol information (the final area MME address may be used) from the telephone number and the approximate position of the mobile device. ) Is specified, and the maintenance terminal 500 is operated to transmit a paging request command in which IMSI is set to the MME 100 based on the final area MME address.

Upon receiving the paging request command, the MME 100 makes a paging request to the eNodeB 700 under its control.

When the mobile device 800 receives the paging request via the eNodeB 700, the mobile device 800 performs a reattachment process, performs a position registration process on the MME 100, and as a result, reestablishes the bearer of the S5 / S8 interface. Alternatively, the bearer of the S5 / S8 interface is reestablished by performing the service request processing. As a result, the bearer can be reattached to the S5 / S8 interface between the S-GW 200 and the P-GW 300, enabling the incoming call processing for the mobile device 800.

Next, the MME 100 of the present embodiment will be described. FIG. 3 is a block diagram showing a functional configuration of the MME 100. As shown in FIG. 3, the MME 100 includes a service area information storage unit 101, a maintenance interface 102 (reception unit), a service area determination unit 103, a paging control unit 104, and a communication unit 105. Hereinafter, each configuration requirement will be described.

The service area information storage unit 101 is a portion that stores profile information including the IMSI (International Mobile Subscriber Identity: identification information) of the mobile device 800 and the service area information indicating the service area position of the mobile device 800. .. The area information here is identification information of MME100 and the like.

The maintenance interface 102 is an interface that is communicably connected to the maintenance terminal 500 by a dedicated line.

The service area determination unit 103 is a part that determines the information to be set in the paging request command based on the IMSI included in the paging request command received via the maintenance interface 102. In making this determination, the area determination unit 103 refers to the profile information stored in the area information storage unit 101 and determines the presence or absence of the IMSI in the profile information.

The paging control unit 104 is a part that generates a paging request. The paging control unit 104 generates a paging request according to whether or not the IMSI included in the paging request command transmitted from the maintenance terminal 500 is included in the profile information. The paging control unit 104 generates a paging request in which the IMSI is set when there is no profile information of the IMSI. If there is profile information of the IMSI, it generates a paging request to set the S-TMSI. The S-TMSI is an identifier of the mobile device 800 paid out from the MME 100 at the time of location registration.

The communication unit 105 is a part that transmits the paging request generated by the paging control unit 104 to the eNodeB 700 under its control. If there is no profile, the communication unit 105 transmits to all the eNodeB 700s under it, and if there is a profile, it transmits to the eNodeB 700 based on the information specifying the eNodeB 700 included in the paging request. To do.

FIG. 4 is a block diagram showing a functional configuration of the maintenance terminal 500. As shown in FIG. 4, the maintenance terminal 500 includes a reset request unit 201 (paging request unit) and an operation unit 202.

The reset request unit 201 generates a paging request command in which the IMSI received by the operation unit 202 is set, and transmits the paging request command to the final area MME address thereof.

The operation unit 202 is a part that accepts operations by the operator maintainer, and is an IMSI indicating the mobile device 800 to be reset and the final area MME address (or pool information indicating the group) to which the paging request command is transmitted. Is accepted from the operator maintenance person.

The operation of the MME 100 configured as described above will be described. FIG. 5 is a flowchart showing the operation of the MME 100. As shown in FIG. 5, in the MME 100, the maintenance interface 102 receives the paging request command in which the IMSI is specified from the maintenance terminal 500 (S101). Then, the service area determination unit 103 determines whether or not the designated IMSI is in the profile information of the service area information storage unit 101 (S102).

Here, if it is determined that there is no IMSI (S102: no profile), a paging request in which the IMSI is set is transmitted to all the eNodeB 700s under the control of the MME 100 (S103). When it is determined that there is an IMSI (S102: with a profile), the paging request for which the S-TMSI is set is stored in the eNodeB 700 that is stored in association with the S-TMSI in the MME 100 among the eNodeB 700 under the control of the MME 100. It is transmitted to (S103).

Next, a processing sequence in the communication system including the MME 100 that operates as described above will be described. FIG. 6 shows a processing sequence diagram in the communication system of the present embodiment.

In the maintenance terminal 500, the operation unit 202 accepts the incoming call NG recovery operation (S201). Here, the IMSI of the target mobile device 800 and the address or pool information (corresponding to group information) of the MME 100 in the final service area are specified. Then, in the maintenance terminal 500, the reset request unit 201 transmits a paging request command in which the IMSI and pool information of the mobile device 800 are set (S202).

When the paging request command is received by the maintenance interface 102 in the MME 100, the service area determination unit 103 performs a profile search process to determine whether or not there is IMSI profile information (S203).

Here, if it is determined that there is no profile information of the IMSI, the paging control unit 104 generates a paging request (S1AP_Paging in the figure) in which the IMSI is set, and the communication unit 105 transmits it (S204).

When the paging request is received in the eNodeB 700, the RRC paging is transmitted in the radio section (S205) and is received in the mobile device 800.

In the mobile device 800, the reattachment process is activated (S206), and the attach process (transmission of EMM_Attach Request in the figure) is performed (S207). Then, based on this attachment process, the bearer of the S5 / S8 interface between the S-GW 200 and the P-GW 300 is reestablished (S208).

On the other hand, when it is determined that there is the profile information of the IMSI, the paging control unit 104 generates a paging request (S1AP_Paging in the figure) in which the S-TMSI is set. Then, it is transmitted by the paging control unit 104 and the communication unit 105 to one or a plurality of eNodeB 700s under the Tracking Area stored in the MME 100 (S209). The tracking area is identified by a tracking area identifier (TAI). The mobile device 800 can grasp the tracking area in the service area by notifying the tracking area identifier of the tracking area to which the eNodeB 700 belongs. The tracking area in which the mobile station is located is registered on the core network side by the mobile device 800 performing location registration (TAU; Tracking Area Update).

When the paging request is received in the eNodeB 700, the RRC paging is transmitted in the radio section (S210) and is received in the mobile device 800.

In the mobile device 800, the service connection process is activated, and the service request process (transmission of EMM_Service Request in the figure) is performed (S211). Then, the service request processing is performed, and the bearer of the S5 / S8 interface is reestablished (S212).

According to the MME 100 of the present embodiment, the paging request can be transmitted to the mobile device 800 by receiving the paging request command from the maintenance terminal 500. That is, even if the bearer of the S5 / S8 interface is released in the core network such as EPC, the paging request can be made to the mobile device 800, and the bearer can be reestablished.

Next, a modified example of the present embodiment will be described. FIG. 7 is a diagram showing a system configuration of a communication system in a modified example. In this modification, the external server 600a automatically notifies the maintenance terminal 500 by detecting that the data distribution has not been reached, and the maintenance terminal 500a issues a paging request command in response to the notification. It is to be sent.

FIG. 8 is a block diagram showing a functional configuration of the maintenance terminal 500a. As shown in FIG. 8, the maintenance terminal 500a includes a reset request unit 201a, a reset request authentication unit 201b, and a subscriber information inquiry unit 203. The reset request unit 201a is a unit that receives a mobile device reset request from the external server 600. Then, the reset request unit 201a authenticates whether the received reset request is a legitimate signal, and if it is recognized as a legitimate request, the IMSI acquired by the subscriber information inquiry unit 203 and finally in the service area. A paging request command is generated based on the address of the MME 100 (hereinafter referred to as the final local MME address) and transmitted to the MME 100 corresponding to the final local MME address.
The reset request authentication unit 201b is a part that authenticates whether or not the reset request requested by the reset request unit 201a is a legitimate signal and instructs the reset request unit 201a to that effect.

When the reset request unit 201a receives the mobile device reset request, the subscriber information inquiry unit 203 is a part that makes an inquiry to the HSS 510 using the IP address or telephone number as a key. The subscriber information inquiry unit 203 acquires the IMSI and the final service area MME address in response to the inquiry.

FIG. 9 is a diagram showing a processing sequence of the communication system in the modified example. In FIG. 9, the downlink packet is delivered by the external server 600a (S301). This packet delivery fails because the S5 / S8 interface between the S-GW 200 and the P-GW 300 is open. Therefore, in the external server 600a, the transfer failure is detected in the P-GW 300 (S302). The external server 600a can determine how far the packet has reached. Then, when it is determined that the external server 600a has reached the P-GW 300 but has not been transferred from that point onward, the reset process is started (S303). Then, in the external server 600a, the mobile device reset request is transmitted to the maintenance terminal 500a (S304). In this mobile device reset request, the IP address or telephone number of the mobile device to be reset and authentication information (ID, password, etc.) for authenticating that the reset request signal is a legitimate request at the maintenance terminal are set. Has been done.

When the mobile device reset request is received in the maintenance terminal 500a, the received reset request is authenticated (S304a), and if it is recognized as a legitimate reset request, the IP address or telephone number is used for the HSS 510. Inquiries such as the IMSI that have been used are processed (S305). In the HSS 510, the IMSI of the mobile device 800 and its service area information (the address of the MME 100 finally located in the service area) are stored in association with the IP address, the telephone number, and the like. Then, in the HSS 510, the IMSI and the final service area MME address are returned in response to the inquiry from the maintenance terminal 500a (S306).

In the maintenance terminal 500a, the paging request command in which the IMSI is set is transmitted to the final service area MME address included in the response returned from the HSS 510 (S307).

In the MME 100, the profile search process is performed based on the paging request command (S308), and the paging request process is performed according to the search result (S20, S21). The details are the same as those in FIG. 6 above.

Next, another modification will be described. FIG. 10 is a diagram showing a system configuration of a communication system in another modified example. This modified example is an example applied to an incoming voice packet by so-called VoLTE. According to FIG. 10, when the P-CSCF600b1 and S-CSCF600b2 constituting the IMS (IP Multimedia Subsystem) 600b cannot perform processing based on the INVITE signal received from the transmitting terminal (not shown), the P-CSCF600b1 Sends a paging request command to the MME100.

The MME 100 can reestablish the bearer of the S5 / S8 interface by performing the paging request processing on the mobile device 800 based on the paging request command received from the P-CSCF 600b1.

FIG. 11 is a functional block diagram of P-CSCF600b1 in this modified example. As shown in FIG. 11, the P-CSCF 600b1 includes a communication control unit 601 (communication determination unit), a reset request unit 602 (paging request unit), and a subscriber information inquiry unit 603.

The communication control unit 601 is a part that performs communication control with the core network including the P-GW 300, and is a part that performs packet transfer processing and QoS control. The communication control unit 601 performs a bearer allocation request and a SIP signal transfer process based on the SIP signal received from the transmitting terminal (not shown). IMSI is set for this SIP signal.

The reset request unit 602 is a part that transmits a reset request command to the MME 100 when the SIP transfer process fails in the communication control unit 601. At that time, the reset request unit 602 transmits a paging request command to the MME 100 based on the final service area MME address acquired by the subscriber information inquiry unit 603. IMSI is set in this paging request command.

When the reset request unit 602 determines that the SIP transfer process has failed, the subscriber information inquiry unit 603 is a part that makes an inquiry to the HSS 510 using the IMSI set in the SIP signal as a key. The subscriber information inquiry unit 603 acquires the final area MME address corresponding to the IMSI in response to the inquiry.

Next, a process using the IMS 600b (P-CSCF600b1) and the MME 100 will be described. FIG. 12 is a diagram showing the processing sequence. The IMS 600b in FIG. 12 will be described as performing the processing of the P-CSCF 600b1 and the S-CSCF 600b2.

In the IMS 600b, the SIP signal is received from the calling terminal (S401). Then, according to this reception, the IMS 600b performs the allocation processing of the Dedicated Bearer for the audio media with respect to the PCRF 400. In this modification, since the bearer of the S5 / S8 interface is released, the response of the assigned NG is transmitted to the IMS 600b in the PCRF400.

Further, in the IMS600b, the SIP signal is transmitted to the P-GW 300 (S403). In the present embodiment, since the bearer of the S5 / S8 interface is released, it is determined in the IMS 600b that the transfer has failed. In the IMS 600b, it can be determined whether the packet to be delivered has reached the P-GW 300 or a node beyond that. Therefore, when it is determined that the packet has arrived only up to the P-GW 300, the reset request unit 602 activates the reset process (S404, S405).

Next, the subscriber information inquiry unit 603 performs an inquiry process for the final area MME address to the HSS 510, and the address of the MME 100 is acquired (S406).

The reset request unit 602 sends a paging request command to the acquired final area MME address of the MME 100 (S407). The IMSI is set in this paging request command.

In the MME 100, the profile search process is performed based on the paging request command (S408), and the paging request process is performed according to the search result (S20, S21).

Next, the action and effect of MME100 of the present embodiment will be described. In the MME 100, the service area information storage unit 101 stores profile information including the IMSI which is the identification information of the mobile device 800 and the service area information indicating the place where the mobile device is located.

Then, the maintenance interface 102 of the MME 100 receives a paging request command including the identification information of the mobile device 800 to be reset from the maintenance terminal 500 which is an external terminal. Then, the service area determination unit 103 determines whether or not the IMSI included in the received paging request command is included in the profile information stored in the service area information storage unit 101.

When the area determination unit 103 determines that the profile information is included in the profile information, the eNodeB 700 corresponding to the area information of the profile information is subjected to a paging process including the IMSI of the profile information. Further, if it is determined that the area determination unit 103 is not included in the profile information, the paging process including the identification information of the profile information is performed on all the eNodeB 700s under the control of the MME 100.

According to this embodiment, the paging process can be performed based on the reset signal from the maintenance terminal or the like. Therefore, even if the bearer of the S5 / S8 interface in the core network is released, the paging process can be performed, and the bearer of the S5S / 8 interface can be reestablished.

Further, when the identification information of the mobile device to be the paging process is not stored as the profile information, the signal for the paging process can be output to all the eNodeB 700s under the control of the MME 100. Therefore, even if the profile information is erased due to the passage of time or other factors, the paging process can be enabled.

In particular, since the IoT dedicated to the receiver cannot perform the attach process or the like accompanying the movement in the service area, it is effective to forcibly perform the attach process from an external terminal such as a maintenance terminal.

The communication system in the modified example is composed of one or a plurality of communication control servers, the MME 100, an external terminal, a maintenance terminal 500a, and a management server, an external server 600a.

The external server 600a instructs the maintenance terminal of the destination information of the mobile terminal when the communication determination unit (not shown) determines whether or not communication with the network is possible and the communication determination unit determines whether or not communication is possible. A reset request unit (not shown) for transmitting a reset request for the mobile terminal is provided.

Further, the maintenance terminal 500 includes a reset request unit 201a that transmits a paging request command to the MME 100 based on the destination information of the mobile device 800 when the reset request of the mobile device 800 is received from the reset request unit.

In this modification, the external server 600a can make a reset request to the mobile device 800 due to the non-delivery of the downlink packet. The maintenance terminal 500a can receive the reset request, and can automatically generate a paging request command and send it to the MME 100 without any operation by the maintenance operator.

At that time, in the maintenance terminal 500a, the subscriber information inquiry unit 203 inquires the HSS 510 (subscriber information management server) of the IMSI of the mobile device 800 corresponding to the destination information such as the telephone number and the IP address. , Send the paging request command including the acquired IMSI.

By this process, the IMSI can be derived from the destination information of the mobile device 800, and the paging request process can be automatically performed.

Further, in the maintenance terminal 500a, the reset request unit 201a inquires about the MME 100 corresponding to the service area information of the mobile device 800, acquires the final service area MME address, and refers to the MME 100 of the mobile device 800. Send a paging request command containing the IMSI. By this process, the MME 100 can be appropriately selected.

Further, the communication system in another modification is composed of one or a plurality of MME100s and a server (P-CSCF600b1) constituting the IMS. The P-CSCF600b1 is a voice packet control server. Then, in the P-CSCF 600b1, the communication control unit 601 transmits the voice packet received from the outside to the network, and determines whether or not the transmission is possible.

When it is determined that the communication is not possible, the subscriber information inquiry unit 603 inquires the HSS 510 about the MME 100 corresponding to the service area information of the destination mobile device 800. Then, the reset request unit 602 transmits a paging request command including the IMSI of the mobile device 800 to the MME 100 of the final service area MME address acquired by the inquiry.

With this configuration, in a call system that makes a voice packet call, if the bearer of the S5 / S8 interface in the core network is released and the mobile device 800 cannot receive a call, the bearer is reestablished at an early stage. be able to.

The block diagram used in the description of the above embodiment shows a block of functional units. These functional blocks (components) are realized by any combination of hardware and / or software. Further, the means for realizing each functional block is not particularly limited. That is, each functional block may be realized by one physically and / or logically coupled device, or directly and / or indirectly by two or more physically and / or logically separated devices. (For example, wired and / or wireless) may be connected and realized by these plurality of devices.

For example, the MME 100, maintenance terminals 500, 500a, external server 600, P0-CSCF600b1 and the like in one embodiment of the present invention function as computers. FIG. 13 is a diagram showing an example of the hardware configuration of the MME 100 according to the present embodiment and the modified example. The MME 100 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following description, the word "device" can be read as a circuit, device, unit, or the like. The hardware configuration of the MME 100 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For each function in the MME 100, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an calculation, and communication by the communication device 1004 and data in the memory 1002 and the storage 1003 are performed. It is realized by controlling the reading and / or writing of.

Processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the service area determination unit 103, the paging control unit 104, and the like may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, and data from the storage 1003 and / or the communication device 1004 into the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the service area determination unit 103 and the paging control unit 104 of the MME 100 may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and may be realized for other functional blocks as well. Although it has been described that the various processes described above are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be mounted on one or more chips. The program may be transmitted from the network via a telecommunication line.

The memory 1002 is a computer-readable recording medium, and is composed of at least one such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory). May be done. The memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The memory 1002 can store a program (program code), a software module, or the like that can be executed to carry out the wireless communication method according to the embodiment of the present invention.

The storage 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. The storage 1003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing memory 1002 and / or storage 1003.

The communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. For example, the above-mentioned maintenance interface 102, communication unit 105, and the like may be realized by the communication device 1004.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. Bus 1007 may be composed of a single bus, or may be composed of different buses between devices.

Further, the MME 100 is configured to include hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). The hardware may realize a part or all of each functional block. For example, processor 1001 may be implemented on at least one of these hardware.

Although the present embodiment has been described in detail above, it is clear to those skilled in the art that the present embodiment is not limited to the embodiment described in the present specification. This embodiment can be implemented as a modified or modified mode without departing from the spirit and scope of the present invention determined by the description of the claims. Therefore, the description of the present specification is for the purpose of exemplification and does not have any restrictive meaning to the present embodiment.

The notification of information is not limited to the embodiments / embodiments described herein, and may be made by other methods. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. It may be carried out by notification information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. Further, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

Each aspect / embodiment described herein includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W-CDMA. (Registered Trademarks), GSM (Registered Trademarks), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand), It may be applied to systems utilizing Bluetooth®, other suitable systems and / or next-generation systems extended based on them.

The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order, and are not limited to the particular order presented.

In some cases, the specific operation performed by the specific device in the present specification may be performed by its upper node. For example, when a specific device is an MME, in a network consisting of one or a plurality of network nodes having the MME, various operations performed for communication with a terminal are other than the MME. It is clear that it can be done by other network nodes (eg, S-GW, but not limited to them). Although the case where there is one network node other than the MME is illustrated above, it may be a combination of a plurality of other network nodes (for example, another gateway such as S-GW).

Information and the like can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be stored in a specific location (for example, a memory), or may be managed by a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).

Each aspect / embodiment described in the present specification may be used alone, in combination, or may be switched and used according to the execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.

Further, software, instructions, and the like may be transmitted and received via a transmission medium. For example, the software uses wired technology such as coaxial cable, fiber optic cable, twist pair and digital subscriber line (DSL) and / or wireless technology such as infrared, wireless and microwave to websites, servers, or other When transmitted from a remote source, these wired and / or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described herein may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

In addition, the terms described in the present specification and / or the terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings.

The terms "system" and "network" as used herein are used interchangeably.

Further, the information, parameters, etc. described in the present specification may be represented by an absolute value, a relative value from a predetermined value, or another corresponding information. .. For example, the radio resource may be indexed.

The names used for the above parameters are not limited in any way. Further, mathematical formulas and the like using these parameters may differ from those expressly disclosed herein. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements (eg, TPC, etc.) can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect. However, it is not limited.

Mobile terminals may be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

The terms "determining" and "determining" as used herein may include a wide variety of actions. "Judgment", "decision" is, for example, calculating, computing, processing, deriving, investigating, looking up (eg, table, database or another). It can include searching in a data structure), and considering that confirming is "judgment" or "decision". Also, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision".

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. As used herein, the two elements are by using one or more wires, cables and / or printed electrical connections, and, as some non-limiting and non-comprehensive examples, radio frequencies. It can be considered to be "connected" or "coupled" to each other by using electromagnetic energies such as electromagnetic energies having wavelengths in the region, microwave region and light (both visible and invisible) regions.

The phrase "based on" as used herein does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

When the terms "first", "second", etc. are used herein, any reference to the elements does not generally limit the quantity or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

As long as "include", "including", and variations thereof are used within the scope of the present specification or claims, these terms are similar to the term "comprising". Is intended to be inclusive. Furthermore, the term "or" as used herein or in the claims is intended not to be an exclusive OR.

In the present specification, a plurality of devices shall be included unless the device has only one device apparently in the context or technically.

In the whole of the present disclosure, if the context clearly does not indicate the singular, it shall include more than one.

100 ... MME, 200 ... S-GW, 300 ... P-GW, 400 ... PCRF, 500 ... Maintenance terminal, 500a ... Maintenance terminal, 510 ... HSS, 600 ... External server, 600a ... External server, 600b ... IMS, 600b1 ... CSCF, 600b2 ... CSCF, 700 ... eNodeB, 800 ... Mobile device, 101 ... Area information storage unit, 102 ... Maintenance interface, 103 ... Area determination unit, 104 ... Paging control unit, 105 ... Communication unit, 201 ... Reset request Unit, 201a ... Reset request unit, 201b ... Reset request authentication unit, 202 ... Operation unit, 203 ... Subscriber information inquiry unit, 601 ... Communication control unit, 602 ... Reset request unit, 603 ... Subscriber information inquiry unit.

Claims (5)

In a communication system consisting of one or more communication control servers, a maintenance terminal that is an external terminal, and a management server.
The one or more communication control servers
An area information storage unit that stores profile information including identification information of a mobile terminal and area information indicating a place where the mobile terminal is located,
A receiver that receives a paging request command containing the identification information of the mobile terminal to be reset from an external terminal,
An area determination unit that determines whether or not the identification information included in the paging request command received by the reception unit is included in the profile information stored in the area information storage unit.
When the area determination unit determines that the information is included in the profile information, the base station corresponding to the area information included in the profile information is subjected to paging processing based on the identification information, and the presence is present. If the service area determination unit determines that it is not included in the profile information, all the base stations under its control are paged based on the identifier issued at the time of location registration by the mobile terminal indicated by the identification information. Communication control unit and
With
The management server
A communication judgment unit that determines whether communication with the network is possible,
When the communication determination unit determines that communication is not possible, the reset request unit indicates the destination information of the mobile terminal to the maintenance terminal and transmits a reset request for the mobile terminal.
With
The maintenance terminal is
When the reset request of the mobile terminal is received from the reset request unit, the identification information of the mobile terminal is derived from the destination information of the mobile terminal, a paging request command including the identification information is generated, and the communication control server is notified. Paging request part to send ,
Communication system including. A reset request authentication unit that performs authentication processing in response to a reset request from the reset request unit is further provided.
The communication system according to claim 1 , wherein the paging request unit transmits a paging request command when the reset request authentication unit determines that the reset request is valid. In the maintenance terminal, the paging request unit, the subscriber information management server, queries identification information of the mobile terminal corresponding to the destination information, and transmits the acquired identification information laden paging request command, wherein Item 2. The communication system according to Item 1 or 2 . In the maintenance terminal, the paging request unit inquires about the communication control server corresponding to the area information of the mobile terminal, and issues a paging request command including the acquired identification information to the inquired communication control server. The communication system according to claim 3, which is transmitted. In a communication system consisting of one or more communication control servers and a voice packet control server,
The one or more communication control servers
An area information storage unit that stores profile information including identification information of a mobile terminal and area information indicating a place where the mobile terminal is located,
A receiver that receives a paging request command containing the identification information of the mobile terminal to be reset from an external terminal,
An area determination unit that determines whether or not the identification information included in the paging request command received by the reception unit is included in the profile information stored in the area information storage unit.
When the area determination unit determines that the information is included in the profile information, the base station corresponding to the area information included in the profile information is subjected to a paging process including the identification information, and the presence is present. If the service area determination unit determines that it is not included in the profile information, all the base stations under its control are paged based on the identifier issued at the time of location registration by the mobile terminal indicated by the identification information. Communication control unit and
With
The voice packet control server
A voice packet received from the outside is transmitted to the mobile terminal, and it is determined whether or not the voice packet has arrived at the gateway device for connecting to the network and the node ahead of the gateway device when viewed from the outside. Communication judgment department and
When the communication determination unit determines that the gateway device has arrived only , the subscriber information management server is inquired about the communication control server corresponding to the area information of the mobile terminal as the destination. A paging request unit that sends a paging request command containing the identification information of the mobile terminal to be reset to the communication control server that made the inquiry.
Communication system including.

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