JP6611354B2 - Communication control device - Google Patents

Description

  The present invention relates to a communication control apparatus.

  Conventionally, when the terminal and the base station communicate with each other, there is a possibility that the communication state between the terminal and the base station becomes inconsistent due to radio factors. As timings for determining whether or not the communication states are inconsistent in this manner, timings for changing the location such as tracking area update processing (see, for example, Non-Patent Document 1) can be considered.

3GPP TS 23.401

  A terminal that can make a call can determine that the communication state does not match when triggered by a call other than the timing of the tracking area update process as described above, but the communication state does not match at a time other than the call from the terminal. The person who can judge this can judge the communication state mismatch earlier. In addition, in the terminal for exclusive use of incoming calls, once the communication state does not match, it becomes impossible to receive a call, which affects the user, so it is desirable to be able to determine the communication state mismatch early.

  The present invention has been made in view of the above, and an object of the present invention is to provide a communication control apparatus that can be controlled so as to eliminate a mismatch in communication state between a terminal and a base station at an early stage.

  In order to solve the above-described problem, the communication control apparatus according to the present invention obtains activation information indicating whether a terminal is active or inactive, and obtains a request to change the location from the terminal, and the acceptance unit. Instructing the base station to send the trigger information from the terminal to the base station when it is determined that the predetermined information is inactive and the predetermined condition is met. An instruction unit.

  According to the present invention, the communication control apparatus instructs the base station to transmit the trigger information from the terminal to the base station to the base station even when the terminal is not active. Communication state inconsistency with the base station can be resolved. That is, it is possible to control so as to eliminate the mismatch of the communication state between the terminal and the base station at an early stage.

  Advantageous Effects of Invention According to the present invention, control can be performed so as to eliminate a mismatch in communication state between a terminal and a base station at an early stage.

It is a figure which shows the communication system which concerns on embodiment of this invention. It is a figure which shows the hardware constitutions of MME30 which concerns on embodiment of this invention. It is a sequence diagram of the process which instruct | indicates transmission of MR signal. It is a sequence diagram of a process for eliminating a communication state mismatch.

  Hereinafter, embodiments of a communication system according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a diagram illustrating an overall configuration of a communication system according to the present embodiment. The communication system according to the present embodiment constitutes an LTE (Long Term Evolution) network that provides a terminal with a packet switching service by wireless communication. The communication system includes a terminal (User Equipment (hereinafter referred to as “UE” in this embodiment)) 10, an eNodeB (hereinafter referred to as “eNB” in this embodiment) 20 corresponding to a base station in the LTE network, and an LTE network. The MME 30 (communication control device) that performs processing such as location management, authentication control, communication path setting, etc. of the UE 10 that is in the service area, and the SGW (Serving gateway) 40 that is a gateway device that functions as a service area packet switch that accommodates LTE And.

  In the communication system configured as described above, when the UE 10 requests the MME 30 to change the tracking area to which the UE 10 belongs, the MME 30 transmits an MR (Measurement Report) signal (trigger information) from the UE 10 to the eNB 20. An instruction is given to the eNB 20. The MR signal is a report from the UE 10 in which the received power value and the like are calculated using the reference signal from the eNB 20 and includes information for identifying the UE 10.

  In response to the above instruction, the eNB 20 instructs the UE 10 to transmit an MR signal. When receiving the instruction, the UE 10 transmits an MR signal to the eNB 20 that is the instruction source based on a preset transmission cycle (for example, 6 minutes). eNB20 transmits the notification to the effect of having received MR signal to UE10, when the communication resource of the said UE10 is ensured. The eNB 20 notifies the UE 10 of nothing when the communication resource of the UE 10 is not secured. If there is no notification that the UE 10 has received the MR signal from the eNB 20 after the MR signal is transmitted and before a preset reply waiting time elapses, the communication state between the UE 10 and the eNB 20 is inconsistent. The communication resource secured by the UE 10 is released. Thus, UE10 judges whether a communication state is inconsistent between UE10 and eNB20, releases the communication resource of UE10, and makes the communication state between UE10 and eNB20 correspond.

  Next, the MME 30 used in the communication system of this embodiment will be described. The MME 30 includes a reception unit 31, a communication control unit 32 (instruction unit), a determination unit 33, and a storage unit 34.

  The accepting unit 31 is a part that obtains activation information indicating whether the UE 10 is active or inactive and accepts a request to change the location from the UE 10. Here, the activity information of the UE 10 is information indicating whether or not the UE 10 is transmitting an uplink user signal. Specifically, the reception unit 31 receives a tracking area update signal indicating a tracking area change request from the UE 10, thereby receiving a request to change the location. Further, the Tracking Area Update signal includes an Active Flag. This ActiveFlag is information indicating whether or not the UE 10 is transmitting an uplink user signal. If the Active Flag is “ON” (active), this indicates that the UE 10 is transmitting an uplink user signal. If the Active Flag is “OFF” (inactive), the UE 10 transmits an uplink user signal. Indicates not. The reception unit 31 also acquires information (for example, IMEISV (IMEI Software Version)) for identifying the UE 10 from the UE 10.

  When receiving the Tracking Area Update signal from the UE 10, the receiving unit 31 sends to the communication control unit 32 that the Tracking Area Update signal has been received, the value of the Active Flag, and IMEISV.

  The communication control unit 32 is a part that communicates with the eNB 20 and the SGW 40. The communication control unit 32 receives the fact that the Tracking Area Update signal has been received from the reception unit 31, the value of the Active Flag, and the IMEISV. In response to this, the communication control unit 32 performs known authentication processing. Then, when the Active Flag is “ON”, the communication control unit 32 performs a known Tracking AreaUpdate process.

  When the Active Flag is “OFF”, the communication control unit 32 sends the IMEISV to the determination unit 33 and acquires from the determination unit 33 the determination result as to whether or not the UE 10 indicated by the IMEISV is dedicated to incoming calls. When the determination result acquired from the determination unit 33 indicates that the incoming call is dedicated, the communication control unit 32 establishes a bearer with the eNB 20 and starts with a Tracking Area Update Accept signal indicating that the Tracking Area Update has been accepted. An S1-AP Initial Context Setup Request signal indicating a context setup request is transmitted to the eNB 20. That is, the communication control unit 32 transmits the S1-AP Initial Context Setup Request signal together with the Tracking Area Update Accept signal to the eNB 20. The Tracking Area Update Accept signal includes a GUTI (Globally Unique Temporary Identifier). This GUTI is an identifier temporarily assigned to the UE 10 by the MME 30 in order to uniquely identify the UE 10.

  When the eNB 20 receives the S1-APInitial Context Setup Request signal from the MME 30 together with the TrackingArea Update Accept signal, the eNB 20 transmits an RRC Connection Reconfiguration signal indicating RRC connection reconfiguration to the UE 10 using this as an opportunity. In addition, eNB20 transmits the RRC Connection Reconfiguration signal containing the parameter which shows transmission of MR signal. UE10 receives the said RRC Connection Reconfiguration signal and transmits the RRC Connection Reconfiguration Complete signal which shows completion of RRC connection reconfiguration to eNB20 according to this. As a result, a bearer is established between the eNB 20 and the UE 10 and an MR signal is transmitted from the UE 10 to the eNB 20. The communication control unit 32 transmits an S1-AP InitialContext Setup Request signal to the eNB 20, and the eNB 20 accordingly transmits an RRC Connection Reconfiguration signal including a parameter indicating transmission of the MR signal to the UE 10. Therefore, the communication control unit 32 transmits an S1-AP Initial Context Setup Request signal to the eNB 20 as an instruction indicating transmission of the MR signal from the UE 10 to the eNB 20.

  In addition, eNB20 also transmits Tracking Area Update Accept signal to UE10. In response to this, the UE 10 transmits a TAU Complete signal indicating completion of the tracking area update to the MME 30, and the communication control unit 32 receives the TAU Complete signal.

  The eNB 20 transmits an S1-AP Initial Context Setup Response signal to the MME 30 in order to notify the newly set bearer information. Upon receiving the S1-APInitial Context Setup Response signal, the communication control unit 32 transmits a ModifyBearer request signal indicating a bearer change to the SGW 40. When the SGW 40 receives the Modify Bearer request signal, the SGW 40 transmits a Modify Bearer response signal to the MME 30.

  The communication control unit 32 receives the TAUComplete signal and receives the Modify Bearer response signal, and then releases the bearer between the MME 30 and the eNB 20. As described above, the communication control unit 32 establishes a bearer between the MME 30 and the eNB 20 before giving an instruction indicating transmission of the MR signal from the UE 10 to the eNB 20, and releases the bearer after giving the instruction. Note that the communication control unit 32 transmits a Tracking Area Update Accept signal to the UE 10 via the eNB 20 instead of transmitting the instruction to the eNB 20 when the determination result obtained from the determination unit 33 indicates that the determination result is not dedicated to incoming calls. In this case, the UE 10 receives the Tracking Area Update Accept signal and transmits a TAU Complete signal to the MME 30. That is, the communication control unit 32 does not give an instruction to the eNB 20 indicating transmission of the MR signal from the UE 10 to the eNB 20.

  The determination unit 33 is a portion that determines whether or not the UE 10 that is the source of the TrackingArea Update signal (request source for change in the area) is dedicated to incoming calls. When the determination unit 33 acquires IMEISV from the communication control unit 32, the determination unit 33 refers to information in the storage unit 34 in which a list of IMEISVs indicating terminals dedicated to incoming calls is stored. When the IMEISV acquired from the communication control unit 32 is included in the list stored in the storage unit 34, the determination unit 33 sends information indicating that the terminal is a terminal dedicated to incoming calls to the communication control unit 32 as a determination result. Send it out. In addition, when the IMEISV acquired from the communication control unit 32 is not included in the list stored in the storage unit 34, the determination unit 33 provides information indicating that the terminal is not an incoming-only terminal as a determination result. 32.

  Next, FIG. 2 shows a hardware configuration of the MME 30 according to the present embodiment. The functional block (configuration unit) of the MME 30 is 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 device physically and / or logically coupled, and two or more devices physically and / or logically separated may be directly and / or indirectly. (For example, wired and / or wireless) and may be realized by these plural devices.

  For example, the MME 30 or the like in one embodiment of the present invention may function as a computer that controls communication. The MME 30 described above may be physically configured as a computer device including a processor 301, a memory 302, a storage 303, a communication module 304, and the like.

  In the following description, the term “apparatus” can be read as a circuit, a device, a unit, or the like. The hardware configuration of the MME 30 may be configured to include one or a plurality of devices illustrated in the figure, or may be configured not to include some devices.

  Each function in the MME 30 reads predetermined software (program) on hardware such as the processor 301 and the memory 302, so that the processor 301 performs an operation to perform communication by the communication module 304 and data in the memory 302 and the storage 303. This is realized by controlling reading and / or writing.

  For example, the processor 301 operates an operating system to control the entire computer. The processor 301 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the communication control unit 32 and the determination unit 33 described above may be realized by the processor 301.

  The processor 301 reads a program (program code), a software module, and data from the storage 303 and / or the communication module 304 to the memory 302, 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 embodiments is used. For example, the MME 30 may be realized by a control program stored in the memory 302 and operated by the processor 301, and may be realized similarly for other functional blocks. Although the above-described various processes have been described as being executed by one processor 301, they may be executed simultaneously or sequentially by two or more processors 301. The processor 301 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunication line.

  The memory 302 is a computer-readable recording medium and includes, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. May be. The memory 302 may be called a register, a cache, a main memory (main storage device), or the like. The memory 302 can store a program (program code), a software module, and the like that can be executed to implement the wireless communication method according to the embodiment of the present invention.

  The storage 303 is a computer-readable recording medium, such as an optical disc such as a CD-ROM (Compact Disc ROM), a hard disc drive, a flexible disc, a magneto-optical disc (eg, a compact disc, a digital versatile disc, a Blu-ray). (Registered trademark) disk, smart card, flash memory (for example, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like. The storage 303 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database including a memory 302 and / or a storage 303, a server, or other suitable medium.

  The communication module 304 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also referred to as a network device, a network controller, a network card, or the like.

  Each device such as the processor 301 and the memory 302 is connected by a bus 305 for communicating information. The bus 305 may be configured with a single bus or may be configured with different buses between apparatuses.

  The MME 30 includes hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). Alternatively, some or all of the functional blocks may be realized by the hardware. For example, the processor 301 may be implemented with at least one of these hardware. The above is the configuration of the MME 30 according to the present embodiment.

  Next, processing for instructing transmission of MR signals will be described using the sequence diagram of FIG. In this process, first, the UE 10 transmits a Tracking Area Update signal to the MME 30. In response to this, the receiving unit 31 of the MME 30 receives the Tracking Area Update signal (step S1). The accepting unit 31 sends to the communication control unit 32 the fact that the Tracking Area Update signal has been accepted, the value of the Active Flag, and the IMEISV. The communication control unit 32 sends the IMEISV to the determination unit 33, and the determination unit 33 uses the IMEISV and the list stored in the storage unit 34, and the UE 10 that is the source of the Tracking Area Update signal is dedicated to incoming calls. Is determined, and the determination result is sent to the communication control unit 32 (step S2).

  The communication control unit 32 establishes a bearer between the MME 30 and the eNB 20 when the determination result indicates that the terminal is dedicated to incoming calls, and sends an S1-AP Initial Context Setup Request signal, a Tracking Area Update Accept signal to the eNB 20 The eNB 20 receives the S1-AP Initial Context Setup Request signal and the Tracking Area Update Accept signal (step S3). In response to receiving the signal, the eNB 20 performs an authentication process (step S4), transmits an RRC Connection Reconfiguration signal including a parameter indicating transmission of the MR signal to the UE 10, and the UE 10 transmits the RRC Connection Reconfiguration signal. Receive (step S5).

  UE10 transmits a RRC Connection Reconfiguration Complete signal to eNB20 according to having received the above-mentioned RRCConnection Reconfiguration signal, and eNB20 receives the RRC Connection Reconfiguration Complete signal (Step S6). In response to receiving the RRC Connection Reconfiguration Complete signal, the eNB 20 transmits an S1-AP Initial Context Setup Response signal to the MME 30, and the MME 30 receives the S1-AP Initial Context Setup Response signal (Step S7).

  In response to receiving the S1-AP Initial Context Setup Response, the MME 30 transmits a Modify Bearer request signal to the SGW 40 (step S8). Moreover, SGW40 transmits a ModifyBearer response signal to MME30 according to having received the said Modify Bearer request signal (step S9). Further, the UE 10 transmits a TAUComplete signal, and the MME 30 receives the TAU Complete signal (Step S10). In response to receiving the TAU Complete signal, the MME 30 releases the bearer between the eNB 20 and the MME 30 (Step S11), and ends the process. Through the above process, the UE 10 transmits the MR signal to the eNB 20 at a constant period.

  Next, a processing procedure for determining a communication state mismatch between the UE 10 and the eNB 20 and matching the communication state will be described with reference to a sequence diagram shown in FIG. As a premise, the UE 10 periodically transmits MR signals by receiving the RRC Connection Reconfiguration signal from the eNB 20 and transmitting RRC Connection Reconfiguration Complete to the eNB 20. In addition, the UE 10 secures resources for communication, and the eNB 20 also secures resources for the UE 10. In other words, it is assumed that the communication states match.

  The UE 10 transmits the MR signal to the eNB 20 at the MR signal transmission timing (step S21). When receiving the MR signal from the UE 10, the eNB 20 reserves resources for the UE 10, and thus notifies the UE 10 that the MR signal has been received (step S22).

  When the eNB 20 releases the communication resource (step S23), if the signal indicating that the communication resource is released due to a radio factor cannot be transmitted to the UE 10, the communication resource is released on the eNB 20 side, and the communication is performed on the UE 10 side. Resources are secured. That is, the communication state becomes inconsistent.

  When the MR signal transmission timing comes again, the UE 10 transmits the MR signal to the eNB 20 (step S24). In this case, since the eNB 20 has already released the resource, the eNB 20 does not notify the UE 10 of reception. Since the UE 10 does not receive the reception notification from the eNB 20 for a certain period, the UE 10 determines that the communication state does not match (step S25), and the UE 10 matches the communication state by releasing the resources (step S26). Thereafter, the MME 30 transmits a paging signal to the eNB 20 (step S27), and the eNB 20 transmits the paging signal to the UE 10 (step S28).

  As described above, the reception unit 31 receives the Tracking AreaUpdate signal from the UE 10 together with the ActiveFlag. When the Active Flag is “OFF”, the communication control unit 32 determines, when the determination unit 33 determines that the UE 10 is a terminal dedicated to incoming calls, the MR signal that triggers determination of a communication state mismatch from the UE 10 to the eNB 20 Is sent (S1-AP Initial Context Setup Request transmission).

  In this case, the MME 30 instructs the eNB 20 to transmit the MR signal from the UE 10 to the eNB 20 even when the Active Flag is “OFF”, and accordingly, communication between the UE 10 and the eNB 20 is performed accordingly. The state mismatch can be resolved early. That is, the MME 30 can perform control so as to resolve the communication state mismatch early. When the Active Flag is “ON”, an instruction indicating transmission of an MR signal that triggers determination of a communication state mismatch from the UE 10 to the eNB 20 without determining whether or not the UE 10 is an incoming-only terminal. To do.

  Further, the communication control unit 32 gives an instruction to transmit an MR signal when determining that the UE 10 is a terminal dedicated to incoming calls. As a result, the MME 30 narrows down the communication state mismatch by focusing on the UE 10 dedicated to incoming calls that has few opportunities to resolve the communication state mismatch. Therefore, the MME 30 can determine the communication state mismatch while reducing the processing load on the network. . Note that when the communication control unit 32 determines that the UE 10 is not a terminal dedicated to incoming calls, the communication control unit 32 ends the process without giving an instruction to transmit an MR signal.

  Further, the communication control unit 32 establishes a bearer between the MME 30 and the eNB 20 before giving an instruction indicating transmission of an MR signal from the UE 10 to the eNB 20, and releases the bearer after giving the instruction. In this case, the communication control unit 32 can avoid keeping unnecessary resources.

  In the above-described embodiment, it is determined whether or not the UE 10 is an incoming terminal, and when the UE 10 is an incoming terminal (that is, when the condition that the UE 10 is an incoming terminal is met), the MR signal is transmitted from the UE 10 to the eNB 20. The case of instructing to send was described. Instead, when other conditions are satisfied, an instruction to transmit an MR signal from the UE 10 to the eNB 20 may be issued. For example, when the MME 30 stores a history of paging failures (paging signal transmission failures) of each UE 10 and the number of paging failures to the UE 10 exceeds a preset threshold, You may make it instruct | indicate to transmit MR signal from UE10 to eNB20.

  In the above-described embodiment, the case where the MME 30 gives an instruction to transmit an MR signal from the UE 10 to the eNB 20 has been described. Instead of the MR signal, any signal that can identify the UE 10 may be applied.

  In the above-described embodiment, the case where the determination unit 33 refers to the list stored in the storage unit 34 to determine whether or not the UE 10 is dedicated to the receiving terminal has been described. Instead, the determination unit 33 transmits the IMEISV to a device other than the MME 30, requests the device to determine whether the UE 10 indicated by the IMEISV is dedicated to the receiving terminal, and acquires the determination result. You may do it.

  Software, whether it is called software, firmware, middleware, microcode, hardware description language, or other names, instructions, instruction sets, code, code segments, program codes, programs, subprograms, software modules , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc. should be interpreted broadly.

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

  Information, signals, etc. described herein may be represented using any of a variety of different technologies. For example, data, commands, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these May be represented by a combination of

  Note that the terms described in this specification and / or terms necessary for understanding this specification may be replaced with terms having the same or similar meaning.

  As used herein, the terms “system” and “network” are used interchangeably.

  In addition, information, parameters, and the like described in this specification may be represented by absolute values, may be represented by relative values from a predetermined value, or may be represented by other corresponding information. . For example, the radio resource may be indicated by an index.

  Further, as used herein, the terms “determining” and “determining” encompass a wide variety of actions. “Judgment” and “decision” are, for example, judgment, calculation, calculation, processing, derivation, investigating, looking up (eg, table, Search in a database or another data structure), “ascertaining” ascertaining, “deciding”, etc. In addition, “determination” and “decision” include receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), access ( accessing) (e.g., accessing data in the memory) may be considered as "determined" or "determined". Also, “determination” and “decision” include resolving, selecting, selecting, establishing, comparing, etc. as “determining” and “deciding”. obtain. In other words, “determination” and “determination” may include considering some operation as “determination” and “determination”.

  As used herein, the phrase “based on” does not mean “based only on,” unless expressly specified otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”

  Further, the “means” in the configuration of each apparatus described above may be replaced with “unit”, “circuit”, “device”, and the like.

  As long as the terms “including”, “comprising”, and variations thereof are used herein or in the claims, these terms are inclusive of the term “comprising”. Intended to be Further, the term “or” as used herein or in the claims is not intended to be an exclusive OR.

  Throughout this disclosure, if articles are added by translation, for example, a, an, and the in English, these articles must be clearly indicated otherwise in context, Including multiple things.

  In addition, each aspect / embodiment described in this specification includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G, 5G, FRA (Future Radio Access), W -CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, UWB (Ultra-WideBand) ), Bluetooth (registered trademark), other appropriate systems, and / or next-generation systems extended based on these systems.

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

  Input / output information or 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 additionally written. The output information or the like may be deleted. The input information etc. may be deleted. The input information or the like may be transmitted to another device.

  Each aspect / embodiment described in this specification may be used independently, may be used in combination, or may be switched according to execution. In addition, notification of predetermined information (for example, notification of being “X”) is not limited to explicitly performed, but is performed implicitly (for example, notification of the predetermined information is not performed). Also good.

  Throughout this disclosure, both the singular and the plural are intended to be included unless clearly indicated to be singular.

  Although the present invention has been described in detail above, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

DESCRIPTION OF SYMBOLS 10 ... UE, 20 ... eNB, 30 ... MME, 40 ... SGW, 301 ... Processor, 302 ... Memory, 303 ... Storage, 304 ... Communication module, 305 ... Bus.

Claims (3)

A receiving unit that receives activation information indicating whether the terminal is active or inactive, and receives a request to change the location from the terminal;
When it is determined that the activation information acquired by the reception unit is inactive, and when it is determined that the predetermined condition is satisfied, the trigger information that triggers the determination of the communication state mismatch is transmitted from the terminal to the base station. A communication control apparatus comprising: an instruction unit that instructs the base station.   The instructing unit determines whether or not the terminal requesting the change of location received by the receiving unit is dedicated to incoming calls. As a result, the terminal requesting the change of location received by the receiving unit is dedicated to receiving calls. The communication control apparatus according to claim 1, wherein when it is determined, the instruction is given to the base station.   The communication control device according to claim 1, wherein the instruction unit establishes a bearer between the own device and the base station before giving the instruction, and releases the bearer after giving the instruction.

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