JP5698006B2 - Femtocell base station, gateway apparatus, distribution terminal, communication system, method and apparatus program - Google Patents

Description

  The present invention relates to a femtocell base station, a gateway device, a distribution terminal, a communication system, a method, and an apparatus program used in a communication system having a broadcast distribution function for mobile terminals existing in a predetermined area.

  In general, in a cell broadcast service (CBS), all mobile terminals located in a specific geographical area (one or more cells) such as an area where the seismic intensity is equal to or higher than a predetermined level in the case of earthquake early warning are transmitted to the CBS. Broadcast the message.

A CBS message distribution operation in a general W-CDMA (Wideband Code Division Multiple Access) network as an existing public mobile communication network for connecting a mobile terminal such as a mobile phone will be described with reference to FIG.
FIG. 3 is a configuration diagram of a CBS distribution system in a general W-CDMA network.

  First, the CBS distribution source device 500 transmits the contents of the CBS message to the CBC (Cell Broadcast Center) 101 of the communication carrier. The CBC 101 transmits a CBS message to a serving general packet radio service support node (SGSN) 102 serving as a distribution target area, the SGSN 102 transmits to a radio network controller (RNC) 103, and the RNC 103 transmits to a base transceiver station (BTS) 104. To the mobile terminal 106 residing in the Macro cell 105 of the user.

  In addition, as a system for transmitting electronic advertisements using a femtocell base station, purchase information and time information are collected by POS (Point Of Sale), and the advertisement distribution server analyzes the user's intention using the collected information and the like There is a database configured such that electronic advertisement data is transmitted to a femtocell base station based on the database with location registration information and time from a mobile terminal as an opportunity (see, for example, Patent Document 1).

JP 2010-170426 A

However, since the general CBS described above is configured as emergency information distribution, the distribution area has a wide range of municipalities and ranges, and CBS distribution to limited cells is not performed.
For this reason, even if CBS distribution by the user service is considered in the future, the distribution area is determined by the CBC, and when trying to operate CBS distribution limited to a specific cell, the cell subdivided by the CBC is made into a database. There is a need.

  Furthermore, in addition to the existing Macro cell, if the above-mentioned Femto cell becomes widespread in each home in the future, the database may become enormous and the necessary cost may increase.

  Further, the above-mentioned Patent Document 1 is intended to provide the latest information in real time according to the user's intention, and does not require a database, and realizes CBS in units of Femto cells with a simple configuration. It was not considered until.

  The present invention has been made in view of such a situation, and does not require a database, and can realize a CBS in units of Femto cells at low cost, a femtocell base station, a gateway device, a distribution terminal, a communication system, and a method And it aims at providing the program of an apparatus.

  To achieve this object, a femtocell base station according to the present invention includes a broadcast distribution control device, and has a function of performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution. A femtocell base station used in a communication system, and the femtocell base station is connected to a broadcast delivery control device via a gateway device, and receives a broadcast delivery request for broadcast delivery to the gateway device. A request transmission means for transmitting a change request for the logical channel of the communication device, and a distribution means for performing broadcast distribution based on the broadcast distribution request when a change permission notification for the change request by the request transmission means is received from the gateway device. It is characterized by that.

  Further, the gateway device according to the present invention is used in a communication system including a broadcast delivery control device and a femtocell base station and performing broadcast delivery to unspecified mobile terminals using a logical channel for broadcast delivery. A gateway device that is arranged between a femtocell base station and a broadcast distribution control device and connects the femtocell base station to the broadcast distribution control device. When a channel change request is received, a request response means for transmitting a change permission notification to the femtocell base station if the change is possible, and transmitting a change impossible notification to the femtocell base station if the change is impossible. It is characterized by having.

  Further, the distribution terminal according to the present invention is connected to a femtocell base station in a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals through a logical channel for broadcast distribution. A distribution terminal used for transmitting a broadcast distribution request for performing broadcast distribution to the femtocell base station, and a distribution permission notification received from the femtocell base station. And message transmission means for transmitting the distribution message data to the femtocell base station.

  The communication system according to the present invention is a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution, and includes the above-described femto according to the present invention. It is characterized by comprising a cell base station, a gateway device according to the present invention arranged between a femtocell base station and a broadcast distribution control device, and a distribution terminal according to the present invention.

  The communication method according to the present invention is a communication method in a communication system that includes a broadcast distribution control device and a femtocell base station and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution. The gateway device is arranged between the femtocell base station and the broadcast distribution control device to connect the femtocell base station to the broadcast distribution control device, and the femtocell base station issues a broadcast distribution request. If received, a request transmission step for transmitting a broadcast channel logical channel change request to the gateway device, and a change request by the request transmission step can be received and changed by the gateway device, the femtocell base station When a femtocell base station receives a permission transmission step for transmitting a change permission notification and a change permission notification by the permission transmission step, broadcast distribution based on the broadcast distribution request is performed. And Shin step, characterized by comprising a.

  Further, the femtocell base station program according to the present invention is used in a communication system that includes a broadcast distribution control device and has a function of performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution. The femtocell base station is connected to the broadcast distribution control device via the gateway device, and receives a broadcast distribution request. A femtocell base comprising: a request transmission procedure for transmitting a channel change request; and a distribution procedure for performing broadcast distribution based on a broadcast distribution request when a change permission notification is received from the gateway device for the change request by the request transmission procedure. The program is executed by a station computer.

  Further, the program of the gateway device according to the present invention is used in a communication system that includes a broadcast distribution control device and a femtocell base station and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution. The gateway device program is arranged between the femtocell base station and the broadcast distribution control device and connects the femtocell base station to the broadcast distribution control device. When a request for changing a distribution logical channel is received, a change permission notification is transmitted to the femtocell base station if the change is possible, and a change impossible notification is transmitted to the femtocell base station if the change is not possible. A request response procedure is executed by a computer of a gateway device.

  Also, the distribution terminal program according to the present invention is connected to a femtocell base station in a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals using a broadcast distribution logical channel. A distribution terminal program used to transmit a broadcast distribution request for performing broadcast distribution to a femtocell base station and a distribution permission notification received from the femtocell base station In this case, a message transmission procedure for transmitting broadcast delivery message data to the femtocell base station is executed by a computer of the delivery terminal.

  As described above, according to the present invention, a CBS for each Femto cell can be realized at low cost without requiring a database.

It is a figure which shows the communication system and its CBS delivery route | root etc. as embodiment of this invention. It is a sequence diagram which shows the CBS message delivery operation | movement by this embodiment. It is a figure which shows the structural example of the conventional W-CDMA network, and its CBS delivery route.

  Next, an embodiment to which a femtocell base station, a gateway device, a distribution terminal, a communication system, a method and a device program according to the present invention are applied will be described in detail with reference to the drawings.

  In the present embodiment, when CBS distribution is performed, Cell management in CBC is not required, and CBS distribution can be independently performed in units of Femto cells.

  For this reason, in this embodiment, as shown in FIG. 1, the distribution source terminal (distribution terminal) 204 connected to the HNB 202 becomes the CBS distribution source, and makes a CBS distribution request from the distribution source terminal 204. The HNB 202 notifies the HNB-GW 201 of notification information change notification necessary for CBS message transmission. After the broadcast information is changed, the CBS message is distributed from the distribution source terminal 204 only to the specific Femto cell 203 under the HNB 202.

  The Femto communication system 200 according to the present embodiment is configured to include such an HNB-GW 201 and an HNB 202, and is connected to the SGSN 102 to play a role similar to that of the RNC 103 and the BTS 104 in the existing W-CDMA network. The mobile terminal 106 can be accommodated as a part of the CDMA network 100 in a communicable manner.

  The CBC 101, SGSN 102, RNC 103, BTS 104, and mobile terminal 106 constituting the W-CDMA network 100 shown in FIG. 1 are processed in accordance with a standard such as 3GPP (Third Generation Partnership Project) in the existing W-CDMA network 100. Since it is an apparatus, detailed processing operations are omitted. The technology used in the existing W-CDMA network is disclosed in, for example, 3GPP TS 33.234 V8.0.0.

  Here, when a CBS message is distributed in a general W-CDMA network as described above with reference to FIG. 3, the CBS message is received from the CNC (Common Traffic Channel) logical channel and received from the RNC 103 to the BTS 104 by receiving a message from the CBC. And delivered to the mobile terminal 106.

  In order to distribute the CBS in each Femto cell according to the present embodiment, it is necessary to control this CTCH independently in the Femto communication system 200, without considering the contention process with the W-CDMA network 100 that is the upper network. must not. In the present embodiment, a broadcast information control method for each Femto cell is defined.

  3GPP, which is studying and creating W-CDMA system specifications, is examining Femto cell network architecture, and the Femto cell base station is called HNB202 (3G Home Node B). Further, there is an HNB-GW (3G HNB gateway) 201 that controls the HNB 202 and plays the same role as the RNC, and broadcast information control necessary for CBS distribution is performed by the HNB-GW 201. The broadcast information may be changed by the HNB-GW 201 in operation, and if the broadcast information is changed independently by the HNB 202, the control expected by the HNB-GW 201 may not be performed. For this reason, the broadcast information of the HNB 202 needs to be controlled by the HNB-GW 201.

  For this reason, in this embodiment, a notification information change request can be made from the HNB 202 side between the HNB 202 and the HNB-GW 201.

  As shown in FIG. 1, a distribution source terminal 204 such as a PC (Personal Computer) is connected to the HNB 202, and a CBS distribution request is transmitted from the application of the distribution source terminal 204 to the HNB 202. The HNB 202 notifies the HNB-GW 201. By transmitting the information change request and opening the CTCH on the logical channels of the mobile terminal 106 and the HNB 202, it is possible to distribute information only to the mobile terminal 106 in the Femto cell 203 as a specific area.

  For this reason, a specific area (Femto cell 203) can be freely transmitted / received between the HNB-GW 201, the managed HNB 202, and the distribution source terminal 204 connected to the HNB 202 without going through the CBC. The CBS message can be distributed only within. In addition, since it is not necessary to perform database management for each HNB 202 in the CBC 101, it is possible to keep costs for implementation low.

  As described above, the distribution source terminal 204 in the present embodiment has a function of enabling input of a CBS message to be distributed to the mobile terminal 106, a function of transmitting a CBS distribution request for distributing the CBS message to the HNB 202, and CBS. And a function of transmitting a message including a message body to the HNB.

  Further, the HNB 202 in the present embodiment has a function of transmitting a CTCH change request to the HNB-GW 201 by receiving a CBS distribution request transmitted from the distribution source terminal 204.

  In addition, the HNB-GW 201 in the present embodiment receives the CTCH change request from the HNB 202, and if the CTCH change is possible, the HNB-GW 201 is under the management of the mobile terminal 106 in the service area under the management of the own device and the own device. A function is provided for requesting both the HNB 202 to establish CTCH and establishing the CTCH between the mobile terminal 106 in the managed service area and the managed HNB 202.

  As described above, the present embodiment is a mobile wireless portable terminal system having a CBS distribution function for simultaneously distributing broadcast information to mobile terminals 106 in a predetermined service area. , Including the CBS message body transmitted from the distribution terminal 204 after CTCH establishment between the mobile terminal 106 in the service area managed by the HNB-GW 201 and the HNB 202 managed by the HNB-GW 201. The message can be broadcast to the mobile terminal 106 via the HNB 202 managed by the HNB-GW 201.

  In addition, since the CBS distribution to the specific Femto cell in the network is performed as described above, the increase in the femtocell management processing load can be minimized, and the CBS distribution to the specific Femto cell can be performed without adding the femtocell management facility. Is possible.

  Next, the CBS message delivery operation according to the present embodiment will be described with reference to the sequence diagram of FIG. FIG. 2 is a sequence diagram showing operations from creation of a CBS message to completion of transmission on the distribution source terminal 204.

  First, the HNB 202 administrator or the like creates a CBS message using the application of the distribution source terminal 204 (step S1). At this time, the delivery time of the CBS message can be set.

  When the set distribution time is reached, the distribution source terminal 204 transmits CBS_START_REQ to the HNB 202 to make a CBS distribution request (step S2). And HNB202 transmits CTCH_OPEN_REQ to HNB-GW201 (step S3), and confirms whether CTCH change is possible (step S4).

  At the time of this confirmation, if the CBS message as emergency information is being distributed in the higher level network (W-CDMA network 100), there is a conflict, so it is necessary to reject the distribution in step S4. In the case of refusal (step S4: No), the HNB-GW 201 notifies the HNB 202 that the CTCH cannot be changed with CTCH_OPEN_CNF (result: NG) (step S21). NG) is transmitted to notify the CBS distribution refusal (step S22), and a message indicating a distribution error is displayed on the display unit (not shown) of the distribution source terminal 204 (step S23).

  If the CTCH change is possible at the time of confirmation in step S4 (step S4: Yes), the HNB-GW 201 transmits a System Information Block (CTCH ON) that causes the mobile terminal 106 to establish a CTCH (step S5), and the HNB 202. CTCH_CONFIG_REQ (change permission notification) is transmitted to CTCH establishment request (step S6). In this way, the CTCH is established between the mobile terminal 106 and the HNB 202 (step S7).

  The HNB-GW 201 sends a CTCH completion notification to the HNB 202 with CTCH_OPEN_CNF (result: OK) (step S8), and the HNB 202 sends CBS_START_CNF (result: OK) to the distribution source terminal 204 to notify CBS distribution permission (step S9). . The HNB 202 distributes the CBS_DATA_IND (step S10) received from the distribution source terminal 204 as a CBS message to each mobile terminal 106 that is in the service area (step S11). When receiving the CBS message, the mobile terminal 106 displays that fact on a display unit (not shown) (step S12).

  After the CBS distribution, the HNB 202 transmits CBS_END_IND (result: OK) to the distribution source terminal 204 to perform CBS transmission completion notification (step S13), and displays that the distribution is complete on the display unit (not shown) of the distribution source terminal 204. (Step S14). Also, CTCH_CLOSE_REQ is transmitted to the HNB-GW 201 to make a CTCH release request (step S15).

  Receiving the CTCH release request, the HNB-GW 201 sends a system information block (CTCH OFF) to the mobile terminal 106 (step S16), and CTCH_RELEASE_REQ to the HNB 202 (step S17), and releases the CTCH of the mobile terminal 106 and the HNB 202. (Step S18).

  As described above, according to the above-described embodiment, a CBS message can be distributed only within a specific area (Femto cell 203) only by an HNB 204 administrator who issues a transmission instruction from a distribution source terminal 204 such as a home PC. It becomes like this. For this reason, it is not necessary to expand the CBC database, and information can be easily transmitted freely by the service provider.

  Since general CBS is configured to use the CBC database for emergency information distribution, even if CBS is to be distributed in the future as a user service, the distribution area is too wide and the level of the municipality is specified. It was not possible to distribute information limited to areas within the facility.

  According to the above-described embodiment, since the CBS message can be delivered with a simple configuration only within the specific Femto cell 203 as described above, for example, vehicle congestion information at a theme park, cancellation information at a university, time at a shopping mall A CBS message limited to a specific facility, such as sale information, can be broadcast to only the mobile terminals in the facility. For this reason, when CBS is distributed as a user service, it can be used to improve services for various facilities.

  Each of the above-described embodiments is a preferred embodiment of the present invention, and the present invention is not limited to this, and various modifications can be made based on the technical idea of the present invention.

For example, even in a configuration in which access restriction is applied to the mobile terminal 106 in a specific Femto cell by making a broadcast information change request from the distribution source terminal 204 to the HNB-GW 201 as in the above-described embodiment. The invention is equally applicable.
According to this configuration, for example, when a call is prohibited during a lesson in a school, it is possible to restrict outgoing / incoming calls by notifying the HNB-GW 201 of control.

In addition, by recording the processing procedure for realizing the HNB-GW 201, the HNB 202, and the distribution source terminal 204 as the above-described embodiments on a recording medium as a program, the above-described functions according to the respective embodiments of the present invention can be achieved. The program supplied from the recording medium can be realized by causing a CPU of a computer constituting each device to perform processing.
In this case, the present invention can be applied even when an information group including a program is supplied to the output device from the above recording medium or from an external recording medium via a network.
That is, the program code itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program code and the signal read from the recording medium constitute the present invention. It will be.
As this recording medium, for example, a hard disk, an optical disk, a magneto-optical disk, a floppy (registered trademark) disk, a magnetic tape, a nonvolatile memory card, a ROM, or the like may be used.

  According to the program according to the present invention, each device in the above-described embodiment can be realized in each device controlled by the program.

[Appendix]
A part or all of the above embodiment can be described as the following supplementary notes, but is not limited to the following.

[Appendix 1]
A femtocell base station used in a communication system having a broadcast distribution control device and having a function of performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
The femtocell base station is connected to the broadcast delivery control device via a gateway device,
When a broadcast delivery request is received, request transmission means for sending a change request for the logical delivery logical channel to the gateway device;
A femtocell base station, comprising: distribution means for performing broadcast delivery based on the broadcast delivery request when a change permission notification for a change request by the request sending means is received from the gateway device.

[Appendix 2]
A rejection transmission unit configured to transmit a distribution rejection notification to a distribution source terminal that is a transmission source of the broadcast distribution request when a change impossibility notification for a change request by the request transmission unit is received from the gateway device; The base station for femtocells according to appendix 1, which is characterized by the following.

[Appendix 3]
The femtocell base station is used by being connected to the distribution source terminal without going through the broadcast distribution control device,
The femtocell base station according to appendix 2, further comprising receiving means for receiving the broadcast distribution request from the distribution source terminal.

[Appendix 4]
A broadcast distribution control apparatus and a femtocell base station are used in a communication system that performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution, and the femtocell base station and the broadcast A gateway device arranged between the distribution control device and connecting the femtocell base station to the broadcast distribution control device;
When the broadcast distribution logical channel change request is received from the femtocell base station, a change permission notification is transmitted to the femtocell base station if it can be changed, and if it cannot be changed, the femtocell A gateway apparatus comprising request response means for transmitting a change impossible notification to a base station for use.

[Appendix 5]
When the request response means can change the broadcast distribution logical channel request from the femtocell base station, the request response means sends the request to the mobile terminal located under the femtocell base station. The gateway apparatus according to appendix 4, wherein a request for establishing a logical channel for broadcast delivery is transmitted.

[Appendix 6]
A distribution terminal used in connection with a femtocell base station in a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
A request transmission means for transmitting a broadcast distribution request for performing broadcast distribution to the femtocell base station;
A distribution terminal comprising: message transmission means for transmitting broadcast distribution message data to the femtocell base station when a distribution permission notification is received from the femtocell base station.

[Appendix 7]
A communication system comprising a broadcast distribution control device and performing broadcast distribution to unspecified mobile terminals by a logical channel for broadcast distribution,
Femtocell base station according to any one of appendices 1 to 3,
The gateway device according to appendix 4 or 5, which is arranged between the femtocell base station and the broadcast distribution control device;
A communication system comprising the distribution terminal according to attachment 6.

[Appendix 8]
A communication method in a communication system comprising a broadcast distribution control device and a femtocell base station and performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
The gateway device is disposed between the femtocell base station and the broadcast distribution control device, and connects the femtocell base station to the broadcast distribution control device;
When the femtocell base station receives a broadcast distribution request, a request transmission step of transmitting a change request for the logical channel for the broadcast distribution to the gateway device;
When the gateway device receives the change request by the request transmission step and can change the request, the permission transmission step of transmitting a change permission notification to the femtocell base station;
A distribution step of performing broadcast distribution based on the broadcast distribution request when the femtocell base station receives a change permission notification in the permission transmission step.

[Appendix 9]
If the gateway device receives the change request by the request transmission step and cannot be changed, a transmission impossible step of sending a change impossible notification to the femtocell base station;
A rejection transmission step of transmitting a distribution rejection notification to a distribution source terminal that is a transmission source of the broadcast distribution request when the femtocell base station receives the change impossible notification by the impossible transmission step; The communication method according to appendix 8, characterized by:

[Appendix 10]
The femtocell base station is used by being connected to the distribution source terminal without going through the broadcast distribution control device,
The communication method according to appendix 9, wherein the femtocell base station receives the broadcast distribution request from the distribution source terminal.

[Appendix 11]
In the permission transmission step, when the change request in the request transmission step is received by the gateway device and can be changed, a change permission notification is transmitted to the femtocell base station, and the subordinate of the femtocell base station 11. The communication method according to any one of appendices 8 to 10, wherein a request to establish the logical channel for broadcast delivery is transmitted to a mobile terminal located in the area.

[Appendix 12]
A femtocell base station program used in a communication system having a broadcast distribution control device and having a function of performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
The femtocell base station is connected to the broadcast delivery control device via a gateway device,
When a broadcast delivery request is received, a request transmission procedure for sending a request for changing the logical channel for broadcast delivery to the gateway device;
When a change permission notification for a change request by the request transmission procedure is received from the gateway device, a delivery procedure for performing broadcast delivery based on the broadcast delivery request is executed by the computer of the femtocell base station. A featured program.

[Appendix 13]
A rejection transmission procedure for transmitting a distribution rejection notification to a distribution source terminal that is a transmission source of the broadcast distribution request when a change impossibility notification for a change request by the request transmission procedure is received from the gateway device. The program according to appendix 12, which is executed by a computer of a base station.

[Appendix 14]
The femtocell base station is used by being connected to the distribution source terminal without going through the broadcast distribution control device,
14. The program according to claim 13, causing a computer of the femtocell base station to execute a reception procedure for receiving the broadcast distribution request from the distribution source terminal before the request transmission procedure.

[Appendix 15]
A broadcast distribution control apparatus and a femtocell base station are used in a communication system that performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution, and the femtocell base station and the broadcast A program for a gateway device arranged between a delivery control device and connecting the femtocell base station to the broadcast delivery control device;
When the broadcast distribution logical channel change request is received from the femtocell base station, a change permission notification is transmitted to the femtocell base station if it can be changed, and if it cannot be changed, the femtocell A program causing a computer of the gateway device to execute a request response procedure for transmitting a change impossible notification to a base station for use.

[Appendix 16]
In the request response procedure, when the broadcast distribution logical channel change request is received from the femtocell base station and can be changed, a change permission notification is transmitted to the femtocell base station, and 16. The gateway device program according to appendix 15, wherein a request for establishing a logical channel for broadcast delivery is transmitted to a mobile terminal located under a femtocell base station.

[Appendix 17]
A program for a distribution terminal used by being connected to a femtocell base station in a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
A request transmission procedure for transmitting a broadcast distribution request for performing broadcast distribution to the femtocell base station;
When a delivery permission notification is received from the femtocell base station, a message transmission procedure for sending broadcast delivery message data to the femtocell base station is executed by the computer of the delivery terminal. program.

100 W-CDMA network 101 CBC
102 SGSN
103 RNC
104 BTS
106 Mobile terminal 200 Femto communication system 201 HNB-GW
202 HNB
203 Femto cell 204 Distribution terminal

Claims (10)

A femtocell base station used in a communication system having a broadcast distribution control device and having a function of performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
The femtocell base station is connected to the broadcast delivery control device via a gateway device,
When a broadcast delivery request is received, request transmission means for sending a change request for the logical delivery logical channel to the gateway device;
When receiving a change permission notification for the change request by the request transmission means from the gateway device, a distribution means for performing broadcast distribution based on the broadcast distribution request;
A rejection transmission unit configured to transmit a distribution rejection notification to a distribution source terminal that is a transmission source of the broadcast distribution request when a change impossibility notification for a change request by the request transmission unit is received from the gateway device . A femtocell base station characterized by the above. The femtocell base station is used by being connected to the distribution source terminal without going through the broadcast distribution control device,
The broadcasting request femto cell base station according to claim 1, further comprising a receiving means for receiving from the distribution source terminal. A distribution terminal used in connection with a femtocell base station in a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
A request transmission means for transmitting a broadcast distribution request for performing broadcast distribution to the femtocell base station;
A distribution terminal comprising: message transmission means for transmitting broadcast distribution message data to the femtocell base station when a distribution permission notification is received from the femtocell base station.   A communication system comprising a broadcast distribution control device and performing broadcast distribution to unspecified mobile terminals by a logical channel for broadcast distribution,
  Connected to the broadcast delivery control device via a gateway device,
  When a broadcast delivery request is received, request transmission means for sending a change request for the logical delivery logical channel to the gateway device;
  When receiving a change permission notification for the change request by the request transmission means from the gateway device, a distribution means for performing broadcast distribution based on the broadcast distribution request;
  A femtocell base station comprising:
  A gateway device arranged between the femtocell base station and the broadcast delivery control device to connect the femtocell base station to the broadcast delivery control device;
  When the broadcast distribution logical channel change request is received from the femtocell base station, a change permission notification is transmitted to the femtocell base station if it can be changed, and if it cannot be changed, the femtocell A gateway device comprising a request response means for transmitting a change impossibility notification to the base station,
  A communication system comprising the distribution terminal according to claim 3. A communication system comprising a broadcast distribution control device and performing broadcast distribution to unspecified mobile terminals by a logical channel for broadcast distribution,
The femtocell base station according to any one of claims 1 to 2 ,
A gateway device arranged between the femtocell base station and the broadcast delivery control device to connect the femtocell base station to the broadcast delivery control device;
When the broadcast distribution logical channel change request is received from the femtocell base station, a change permission notification is transmitted to the femtocell base station if it can be changed, and if it cannot be changed, the femtocell A gateway device comprising a request response means for transmitting a change impossibility notification to the base station ,
A communication system comprising the distribution terminal according to claim 3 . A communication method in a communication system comprising a broadcast distribution control device and a femtocell base station and performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
The gateway device is disposed between the femtocell base station and the broadcast distribution control device, and connects the femtocell base station to the broadcast distribution control device;
When the femtocell base station receives a broadcast distribution request, a request transmission step of transmitting a change request for the logical channel for the broadcast distribution to the gateway device;
When the gateway device receives the change request by the request transmission step and can change the request, the permission transmission step of transmitting a change permission notification to the femtocell base station;
When the femtocell base station receives the change permission notification by the permission transmission step, a distribution step of performing broadcast distribution based on the broadcast distribution request;
If the gateway device receives the change request by the request transmission step and cannot be changed, a transmission impossible step of sending a change impossible notification to the femtocell base station;
A rejection transmission step of transmitting a distribution rejection notification to a distribution source terminal that is a transmission source of the broadcast distribution request when the femtocell base station receives the non-changeable notification by the impossible transmission step . A communication method characterized by the above.   The femtocell base station connects to the distribution source terminal without going through the broadcast distribution control device
Used,
  The femtocell base station receives the broadcast distribution request from the distribution source terminal.
The communication method according to claim 6. A femtocell base station program used in a communication system having a broadcast distribution control device and having a function of performing broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
The femtocell base station is connected to the broadcast delivery control device via a gateway device,
When a broadcast delivery request is received, a request transmission procedure for sending a request for changing the logical channel for broadcast delivery to the gateway device;
A delivery procedure for performing broadcast delivery based on the broadcast delivery request when a change permission notification for a change request by the request sending procedure is received from the gateway device;
A rejection transmission procedure for transmitting a distribution rejection notification to a distribution source terminal that is a transmission source of the broadcast distribution request when a change impossibility notification for a change request by the request transmission procedure is received from the gateway device; A program for causing a base station computer to execute.   The femtocell base station connects to the distribution source terminal without going through the broadcast distribution control device
Used,
  A reception procedure for receiving the broadcast distribution request from the distribution source terminal is performed before the request transmission procedure.
9. A program according to claim 8, wherein said computer is executed by a computer of said femtocell base station.
Program. A program for a distribution terminal used by being connected to a femtocell base station in a communication system that includes a broadcast distribution control device and performs broadcast distribution to unspecified mobile terminals using a logical channel for broadcast distribution,
A request transmission procedure for transmitting a broadcast distribution request for performing broadcast distribution to the femtocell base station;
When a delivery permission notification is received from the femtocell base station, a message transmission procedure for sending broadcast delivery message data to the femtocell base station is executed by the computer of the delivery terminal. program.

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