JP5423139B2 - Mobile communication system, communication control method for mobile communication system, and base station control apparatus - Google Patents

Description

The present invention relates to a mobile communication system, a communication control method for a mobile communication system, and a base station control apparatus , and more particularly to communication control in a specific area.

  Currently, the use of mobile phones in specific areas (especially around cash machines) has become a social issue. As countermeasures, devices that interfere with radio waves from mobile phones have been developed. For example, in Patent Document 1, a jamming device is provided in a specific area where the use of a mobile device is desired to be restricted, and the jamming device outputs a jamming radio wave to the specific area by controlling the control channel monitoring unit and the control channel monitoring unit. A radio wave generation unit is provided, and the control channel monitoring unit monitors the control channel between the mobile station and the base station in a specific area and detects a signal representing a voice communication call. Is disclosed to generate jamming radio waves by driving the.

JP 2005-45839 A

  However, in the apparatus shown in Patent Document 1, since the radio wave of the mobile phone itself is disturbed, only the mobile phone call in the vicinity of the cash dispenser is restricted, and mail can be sent and received on the mobile phone. It is not possible to implement mobile phone communication restrictions that are specific to a specific call type (Packet Service: PS or Conversion Service: CS).

In view of the above-described problems, the present invention provides a mobile communication system, a communication control method for a mobile communication system, and a base station control device capable of realizing communication control of a mobile phone of a specific call type in a specific area. With the goal.

In order to solve the above problems, the present invention includes a base station communicating with mobile terminals and the radio in a mobile communication system comprising a base station controller for controlling said base station, a particular call type for calling femtocell for restricting the call is placed to a specific area to restrict the call, the base station controller is triggered to receive the Measurement report from the mobile terminal, the other to the femtocell It is characterized by activating relocation that is not linked .

The present invention relates to a communication restriction method for a mobile communication system comprising a base station that communicates wirelessly with a mobile terminal and a base station controller that controls the base station, and a femto that restricts a call of a specific call type. A cell is placed in a specific area where outgoing calls are restricted, and the base station controller triggers a relocation that is not linked to the femtocell, triggered by reception of a measurement report from the mobile terminal. It is characterized by doing.

The present invention provides a mobile communication system comprising: a base station that communicates wirelessly with a mobile terminal; and a femtocell that restricts a call of a specific call type arranged in a specific area that restricts the call. The base station control apparatus performs the control of the above, and triggers the reception of a measurement report from the mobile terminal to start relocation that is not linked to the femtocell .

  According to the present invention, a femto cell that regulates a call of a specific call type is placed in a specific area that regulates a call, and a relocation that is not linked to another is triggered by receiving a measurement report. Thus, it is possible to release a specific call type in a specific area and to restrict a call of a specific call type in the specific area.

It is explanatory drawing of an example of arrangement | positioning of the femtocell only for regulation in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the mobile communication system of the 1st Embodiment of this invention. It is a flowchart used for description of the mobile communication system of the 1st Embodiment of this invention. It is a flowchart used for description of the mobile communication system of the 1st Embodiment of this invention. It is a flowchart used for description of the mobile communication system of the 1st Embodiment of this invention. It is a flowchart used for description of the mobile communication system of the 1st Embodiment of this invention. It is explanatory drawing of an example of arrangement | positioning of the femtocell only for regulation in the 2nd Embodiment of this invention. It is a flowchart used for description of the mobile communication system of the 2nd Embodiment of this invention. It is a flowchart used for description of the mobile communication system of the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the first embodiment of the present invention, a specific call type in a specific area is regulated by providing a femtocell dedicated to regulation. The femtocell is a cellular phone call area (cell) having a very small radius of about several tens of meters and its base station. The femtocell can be connected to the service provider's network through a broadband line (such as DSL (Digital Subscriber Line) or optical cable).

  FIG. 1 is an example of an arrangement of a femtocell dedicated to regulation. As shown in FIG. 1, for example, when it is desired to regulate a call of a specific call type in the vicinity where the cash dispenser 20 is placed, as shown in FIG. A femtocell base station 21 is arranged. Thereby, the call of the specific call type in the area 22 near the cash dispenser 20 can be regulated. Hereinafter, the term “call”, such as call type and call origination, is used, but these are not limited to voice communication procedures, and include, for example, mail and web communication procedures.

  Further, when the same mobile terminal frequently makes a call of a specific call type, the femtocell base station 21 notifies the external system such as the police or the fire department of the mobile terminal. Thereby, the base station 21 of the femtocell can make a third party recognize the telephone number of the mobile terminal that continues communication of the specific call type during the restriction.

  FIG. 2 shows the configuration of the mobile communication system according to the first embodiment of the present invention. This system is a mobile communication system in the IMT-2000 system.

  In FIG. 2, a mobile terminal (UE: referred to as User Equipment) 10 is a terminal carried by a user. A base station (referred to as Node B) 12 communicates with the mobile terminal 10 wirelessly. A base station control device (RNC: Radio Network Controller) 13 is a base station control device of the IMT-2000 system and controls the base station 12. A mobile switching center (CN: Core Network) 15 controls links with other stations. As described above, the restriction-specific femtocell 16 is provided for restricting a call of a specific call type in a specific area. The coverage area of the restriction-specific femtocell 16 corresponds to the area 22 in FIG. The gateway apparatus 14 is an apparatus that bundles a plurality of femtocells and communicates with a mobile switching center (CN: Core Network) 15.

  Further, the femtocell 16 associates and stores a restricted call counter telephone number indicating the telephone number on the CN side of the restricted call and a restricted call counter telephone number database indicating the number of calls of the restricted call. 17 is connected. The restricted call opposite phone number database 17 stores data using the restricted call opposite phone number as a main key. The restricted call type opposite telephone number indicates the telephone number of the mobile terminal that calls the restricted call type opposite to the mobile terminal located in the femtocell.

  The mobile terminal 10 communicates with the base station 12 when in the cell 11 of the base station 12. In addition, the mobile terminal 10 sends a measurement report indicating a downlink reception state to the neighboring base stations as handover candidates.

When the mobile terminal 10 moves to the vicinity of the restriction-specific femtocell 16 during communication, the radio base station control device 13 gives the mobile terminal 10 a measurement control in which information on the restriction-specific femtocell 16 is set. Send. Thereby, the mobile terminal 10 can recognize the femtocell 16 dedicated to regulation.
The radio base station controller 13 transmits measurement control that causes the mobile terminal to intermittently measure the highest quality cell among a plurality of radio links. When receiving the measurement control, the mobile terminal 10 measures the cell and transmits a measurement report indicating the result to the radio base station controller 13.

  When receiving the measurement report from the mobile terminal 10, the radio base station control device 13 determines whether or not the call type is the restriction target, and if the call type is the restriction target, the radio base station control apparatus 13 determines whether the report is from the restriction-specific femtocell 16 or not. If it is a report from the femtocell 16 dedicated to regulation, relocation that is not linked to another is activated. When the mobile terminal 10 enters the restriction-specific femtocell 16, the mobile terminal 10 is relocated to the restriction-specific femtocell 16. When the relocation is completed, the restriction-specific femtocell 16 determines whether or not the call type is a restriction target, and if it is a restriction call type, the mobile switching center 15 releases the RAB (Radio Access Bearer). Send a request to release the call.

  Further, when receiving the RRC (Radio Resource Control) connection request, the femtocell 16 dedicated to regulation determines whether or not the call type is a restriction target, and rejects the connection if the call type is a restriction target. To do.

  In this way, in the first embodiment of the present invention, the radio base station controller 13 triggers the reception of a measurement report from the femtocell 16 dedicated to regulation, and activates relocation that is not linked to others. Thus, it is possible to regulate outgoing calls of a specific call type in a specific area where the restriction-specific femtocell 16 is arranged.

  Next, a specific example of a method for restricting a call of a specific call type in a specific area where a restriction-specific femtocell 16 is arranged will be described.

(1) Call release method for specific call types during communication In the embodiment of the present invention, when the mobile terminal 10 during communication moves into the restriction-specific femtocell 16, Release the call. The operation at this time will be described.

First, the primary scramble code (Primary Scramble code (specific code for each cell for identifying each cell, for details, refer to 3GPP 25.331) or cell ID of the femtocell 16 dedicated to regulation The value of the primary scramble code or cell ID is set in the restriction-specific femtocell 16. Also, in order to make it easier for the mobile terminal 10 to detect the radio waves of the restriction-specific femtocell 16, the restriction is applied. The HCS (Hierarchical Cell Structure) priority (see HCS Priority (see 3GPP 25.331 HCS_PRIO)) of the dedicated femtocell 16 is set to the highest value. It indicates the priority in determining the cell sending the request.
In addition, the radio base station control device 13 registers information on the femtocell 16 dedicated to regulation with respect to a cell in the vicinity of the femtocell 16 dedicated to regulation.

When the mobile terminal 10 that is actually communicating moves to the vicinity of the femtocell 16 dedicated for regulation, the radio base station control device 13 performs intra-frequency measurement or inter-frequency measurement (inter-measurement). The measurement control (Measurement Control) in which the information of the femtocell 16 dedicated for restriction is set in the frequency measurement (frequency measurement) is transmitted to the mobile terminal 10. Thereby, the mobile terminal 10 can recognize the femtocell 16 dedicated to regulation.
Here, the intra frequency measurement indicates a measurement method for measuring a plurality of cells at the same frequency, and the inter frequency measurement indicates a measurement method for measurement at a different frequency for each cell.

  The mobile terminal 10 transmits a measurement report (Measurement Report) measuring the reception state to the base station 12 when an event occurs, for example, when the level or quality of a downlink reception signal changes.

  When the radio base station controller 13 receives a measurement report (events 1a, 1a ′, 1c, 2a) for a specific call type, the radio base station controller 13 measures the major measurement in the Additional Measured Results (Additional Measured Results). Check the value of the primary scramble code or cell ID of the results (Measured Results). The specific call type is determined by an establishment cause of an RRC connection request. As described above, the primary scramble code or cell ID of the femtocell 16 dedicated to regulation is determined in advance. For this reason, it is possible to determine whether the femtocell 16 is exclusively for regulation from the value of the primary scramble code or the cell ID. If this value is a predetermined primary scramble code or cell ID of the femtocell 16 for regulation, the radio base station controller 13 sends a relocation required (RANAP) to the mobile switching center 15. To activate UE involved SRNS relocation without Iur (UE involved SRNS relocation with Iur). The term Iur refers to an interface or link between an RNC and another RNC.

  The femtocell 16 dedicated to regulation transmits a RAB (Radio Access Bearer) release request (RANAP: RAB Release Request) to the mobile switching center 15 after completion of UE involved, SRNS, relocation, without, and Iur. Release RAB for a specific call type.

  FIG. 3 shows processing at the time of measurement report reception in the radio base station control device 13.

  When receiving the measurement report (events 1a, 1a ', 1c, 2a), the radio base station control device 13 determines whether or not the call type is to be regulated (step S1). As described above, the specific call type is determined by the establishment cause of the RRC connection request. That is, it is determined whether or not the call type information stored in the establishment message indicates the caller who performs the restriction.

  If the call type is not to be regulated (No in step S1), the radio base station control device 13 performs processing at the time of normal measurement report reception (step S2).

  If the call type is to be regulated (Yes in step S1), the radio base station control device 13 uses the primary results scramble code or cell of the major results in the additional major results in the measurement report. It is determined whether or not the ID value is that of a predetermined femtocell 16 for regulation (step S3).

  If the value of the primary scramble code or cell ID is not that of the predetermined femtocell 16 dedicated for regulation (No in step S3), the process proceeds to step S2, and the radio base station controller 13 performs normal measurement.・ Process when receiving reports.

  If the value of the primary scramble code or cell ID is that of the predetermined femtocell 16 for regulation (Yes in step S3), the radio base station control device 13 performs UE involved SRNS relocation with out -Iur is started (step S4).

  FIG. 4 shows a processing method in the femtocell 16 dedicated to regulation immediately after completion of UE involved, SRNS, relocation, without, and Iur.

  In FIG. 4, the restriction-specific femtocell 16 transmits a RANAP location complete to the mobile switching center 15, and then determines whether or not the call is a call type to be restricted (step S11). As described above, the specific call type is determined by the establishment cause of the RRC connection request.

  If the call type is not to be restricted (No in step S11), the call is continued (step S12).

  If the call type is to be restricted (Yes in step S11), the restriction-specific femtocell 16 transmits a RAB release request to the mobile switching center 15 to release the RAB of the call type to be restricted (step S13). .

(2) Call Restriction Method for Specific Call Type in Specific Area In the embodiment of the present invention, when the mobile terminal 10 moves into the femtocell 16 dedicated for restriction, the call of the specific call type is restricted. The operation at this time will be described.

  FIG. 5 shows a processing method in the femtocell 16 dedicated for regulation when an RRC connection request is received.

  When receiving the RRC connection request, the restriction-specific femtocell 16 determines whether the call type is a restriction type to be restricted (step S21). This can be determined by the establishment of RRC connection request.

  If the call type is not to be restricted (No in step S21), normal call establishment is performed (step S22).

  If the call type is to be restricted (Yes in step S21), the restricted femtocell 16 transmits an RRC connection reject to the mobile switching center 15 and rejects call establishment (step S23).

Next, a specific example of a method for notifying an external system of a CN-side telephone number of a call that has become a specific call type in a specific area where a restriction-specific femtocell 16 is arranged will be described.
FIG. 6 shows a method in which the femtocell 16 notifies the CN telephone number of a specific call type.
When the call release of the call subject to restriction is completed by the above-described processing, the femtocell 16 determines whether the restriction target call that has been released is an outgoing call or an incoming call (step S31). Note that whether the call is an outgoing call or an incoming call can be determined by the establishment of the RRC connection request.

If the call is an outgoing call (Yes in step S31), the femtocell 16 uses the Called party BCD number (called number) in the DT1 (Data Transfer 1) message during call establishment in the regulated call as the regulated call opposite telephone. Obtained as a number (step S32).
On the other hand, if the call is an incoming call (No in step S31), the femtocell 16 acquires the Calling party BCD number (calling number) in the DT1 message during call establishment in the regulated call as the regulated call counter telephone number. (Step S33).

  When the femtocell 16 acquires the restricted call opposite telephone number in step S32 or step S33, the femtocell 16 determines whether or not the acquired restricted call opposed telephone number is registered in the restricted call opposed telephone number database 17 (step S34). The determination as to whether or not it is registered is performed by, for example, searching the data in the restricted call opposite telephone number database 17 using the restricted call opposite telephone number acquired by the femtocell 16 as a key, and whether or not there is hit data. It is done by judging.

When the femtocell 16 determines that the acquired restricted call counter telephone number is not registered in the restricted call opposite telephone number database 17 (No in step S34), the restriction acquired in the restricted call opposed telephone number database 17 is obtained. The target call opposite telephone number is registered, and 1 is registered as the restriction count counter in association with the registered restriction target call opposite telephone number (step S35). When registration in the restriction target call opposite telephone number database 17 is completed, the femtocell 16 ends the process and waits for the next restriction target call to be released.
On the other hand, when the femtocell 16 determines that the acquired restriction target call opposite telephone number is registered in the restriction target call opposite telephone number database 17 (Yes in step S34), the femtocell 16 associates with the restriction target call opposite telephone number. Then, it is determined whether or not the restriction count counter registered in the restriction target call opposite telephone number database 17 is equal to or greater than a preset notification restriction number (step S36).

When the femtocell 16 determines that the restriction count counter is not equal to or greater than the preset notification restriction count (No in Step S36), the femtocell 16 adds 1 to the value of the restriction count counter and overwrite-registers it in the call target telephone number database 17 to be restricted. (Step S37). When registration in the restriction target call opposite telephone number database 17 is completed, the femtocell 16 ends the process and waits for the next restriction target call to be released.
On the other hand, when the femtocell 16 determines that the restriction count counter is equal to or greater than the preset notification restriction number (Yes in step S36), the femtocell 16 notifies the external system of the call target telephone number information to be restricted (step S38). Here, the external system refers to, for example, an emergency call system for a police or a fire department or a monitoring system for a mobile phone network. When the notification to the external system ends, the femtocell 16 ends the process and notifies the next nuisance call.

  As a result, every time the femtocell 16 releases the restriction target call, the femtocell 16 updates the restriction count counter indicating the number of calls of the restriction target call stored in the restriction target call opposite telephone number database 17. When the restriction count counter reaches a predetermined notification restriction count, the telephone number of the mobile terminal on the CN side of the restriction target call can be notified to the external system. Thereby, the femtocell 16 can make a third party recognize the telephone number of the mobile terminal that continues the communication of the specific call type during the regulation when the regulation occurs.

  As described above, in the embodiment of the present invention, by providing the restriction-specific femtocell 16, it is possible to restrict outgoing calls of a specific call type in a specific area where the restriction-specific femtocell 16 is arranged. Further, the restriction-specific femtocell 16 can allow a third party to recognize the telephone number of a mobile terminal that continues communication of a specific call type during restriction when the restriction occurs.

In the first embodiment described above, the example in which the femtocell 16 restricts the call of a specific call type has been described. In the second embodiment, an example in which the base station control device 13 restricts the call is described. To do.
FIG. 7 is an example of the arrangement of the femtocell dedicated to regulation. As shown in FIG. 7, in the second embodiment, the radio base station controller 13 is connected to the call-target telephone number database 17 to be regulated, and the radio base station controller 13 regulates outgoing calls and the mobile terminal phone. Make a number notification.

Next, a specific example of a method for restricting a call of a specific call type in a specific area where a restriction-specific femtocell 16 is arranged will be described.
FIG. 8 shows processing at the time of measurement report reception in the radio base station control device 13.

  When receiving the measurement report (events 1a, 1a ', 1c, 2a), the radio base station control device 13 determines whether the call type is to be regulated (step S101). As described above, the specific call type is determined by the establishment cause of the RRC connection request.

  If the call type is not to be regulated (No in step S101), the radio base station control device 13 performs processing at the time of normal measurement report reception (step S102).

  If the call type is to be regulated (Yes in step S101), the radio base station control device 13 uses the primary result scramble code or cell of the major result in the additional major result in the measurement report. It is determined whether or not the ID value is that of a predetermined femtocell 16 for regulation (step S103).

  If the value of the primary scramble code or the cell ID is not that of the predetermined femtocell 16 dedicated for regulation (No in step S103), the process proceeds to step S102, and the radio base station controller 13 performs normal measurement.・ Process when receiving reports.

  If the value of the primary scramble code or the cell ID is that of the predetermined femtocell 16 for regulation (Yes in step S103), the radio base station controller 13 sends a RAB release request to the CN. The RAB for the specific call type is released (step S104).

Next, a specific example of a method in which the radio base station control device 13 notifies the external system of the CN-side telephone number of a call that has become a specific call type in a specific area will be described.
FIG. 9 shows a method in which the radio base station controller 13 notifies the CN telephone number of a specific call type.
When the call release of the call subject to restriction is completed by the above-described method, the radio base station apparatus 13 determines whether the restriction target call that has been released is an outgoing call or an incoming call (step S131). Note that whether the call is an outgoing call or an incoming call can be determined by the establishment of the RRC connection request.

If the call is an outgoing call (Yes in step S131), the radio base station control device 13 acquires the called number in the DT1 message during call establishment in the restriction target call as the restriction target call opposite telephone number (step S132). .
On the other hand, if the call is an incoming call (No in step S131), the radio base station controller 13 acquires the calling number in the DT1 message during call establishment in the regulated call as the regulated call opposite telephone number (step S131). S133).

  When the radio base station controller 13 obtains the restricted call opposite telephone number in step S32 or step S33, it determines whether or not the acquired restricted call opposite telephone number is registered in the restricted call opposed telephone number database 17. (Step S134). The determination as to whether or not it is registered is, for example, by searching the data in the restricted call opposite telephone number database 17 using the restricted call opposite telephone number acquired by the radio base station controller 13 as a key, and there is data that hits. This is done by determining whether or not.

If the radio base station controller 13 determines that the acquired call-target telephone number for restriction is not registered in the call-target telephone number database 17 for restriction (No in step S134), The obtained restriction target call opposite telephone number is registered, and 1 is registered as a restriction number counter in association with the registered restriction target call opposite telephone number (step S135). When the registration in the restriction target call counter telephone number database 17 is completed, the radio base station controller 13 ends the process and waits for the next restriction target call to be released.
On the other hand, when the radio base station control device 13 determines that the acquired call-target telephone number for restriction is registered in the call-target telephone number database 17 for restriction (Yes in step S134), the call-target telephone number for restriction It is determined whether or not the restriction number counter registered in the restriction target call opposite telephone number database 17 in correspondence with the number is a preset notification restriction number (step S136).

When it is determined that the restriction count counter is not equal to or greater than the preset notification restriction count (No in step S136), the radio base station control device 13 adds 1 to the value of the restriction count counter and controls the call-target telephone number database 17 to be restricted. Overwrite registration (step S137). When the registration in the restriction target call counter telephone number database 17 is completed, the radio base station controller 13 ends the process and waits for the next restriction target call to be released.
On the other hand, when it is determined that the restriction count counter is equal to or greater than the preset notification restriction count (Yes in step S136), the radio base station control device 13 notifies the external system of the call target telephone number information to be restricted (step S136). S138). Here, the external system refers to, for example, an emergency call system for a police or a fire department or a monitoring system for a mobile phone network. When the notification to the external system ends, the radio base station control device 13 ends the process and notifies the next nuisance call.

  Thereby, every time the restriction target call is released, the radio base station control device 13 updates a restriction number counter indicating the number of calls of the restriction target call stored in the restriction target call opposite telephone number database 17. When the restriction count counter reaches a predetermined notification restriction count, the telephone number of the mobile terminal on the CN side of the restriction target call can be notified to the external system. Thereby, the radio base station control device 13 can make a third party recognize the telephone number of the mobile terminal that continues communication of the specific call type during the regulation.

  As described above, in the embodiment of the present invention, since the radio base station controller 13 can be used to regulate the call of a specific call type in a specific area, the mobile terminal has entered the specific area during communication. In this case, it is possible to restrict communication using a specific call type in the specific area. In addition, the radio base station control device 13 can make a third party recognize the telephone number of the mobile terminal that continues communication of a specific call type during regulation when the regulation occurs.

DESCRIPTION OF SYMBOLS 10 Mobile terminal 11 Cell 12 Base station 13 Radio base station control apparatus 14 Gateway apparatus 15 Mobile switching center 16 Femtocell 17 Restricted call counter telephone number database

Claims (6)

And a base station communicating with mobile terminals and the radio in a mobile communication system comprising a base station controller for controlling said base station,
Femtocell to restrict a call for a specific call type, placed in a particular area for restricting a call,
The mobile communication system, wherein the base station control device starts relocation that is not linked to the femtocell, triggered by reception of a measurement report from the mobile terminal . In a communication restriction method for a mobile communication system comprising a base station that communicates wirelessly with a mobile terminal, and a base station control device that controls the base station,
Place femtocells that restrict outgoing calls for specific call types in specific areas that restrict outgoing calls,
The base station controller activates relocation that is not linked to the femtocell, triggered by reception of a measurement report from the mobile terminal.   3. The mobile communication system according to claim 2, wherein when the relocation is completed, the femtocell determines whether the call type is a restriction target, and releases the call when the call type is a restriction target call type. Communication regulation method.   The femtocell judges whether or not the call type is a restriction target when receiving a connection request, and rejects the connection when the call type is a restriction target call type. A communication restriction method for a mobile communication system according to claim 1. Each time the femtocell detects a regulated call type, it registers the number of detections in the storage means in association with the identification number of the mobile terminal on the other side,
Of the detected number of times the storage means stores, claim detection number and notifies the identification number associated with the number of detection times in an external system when there is made a predetermined value or more 3 Or the communication control method of the mobile communication system of Claim 4 .   Control of the base station in a mobile communication system comprising a base station that communicates wirelessly with a mobile terminal and a femtocell that restricts a call of a specific call type arranged in a specific area that restricts the call A base station controller,
  Trigger a relocation that is not linked to the femtocell, triggered by reception of a measurement report from the mobile terminal
  A base station controller characterized by that.

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