JP2003216522A - Data delivery system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data delivery system capable of delivering desired contents by a relatively simple procedure in a holder of a wireless system even when the holder of the wireless system and a contents holder, or a server manager are different. <P>SOLUTION: A delivery control device 30 retaining a base station identifier and a data identifier expressing specific data among a plurality of data stored in the server 10 and having identifier transmission means transmitting the base station identifier and the data identifier to the server 10 is connected to a network 20. The server 10 is provided with data storage means retaining a plurality of data, data selecting means selecting the specific data corresponding to the data identifier received from the delivery control device 30, and data transmitting means transmitting the data selected by the data selecting means to a specific wireless base station 40 corresponding to the base station identifier received from the delivery control device 30. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless base station that broadcasts received data to a plurality of wireless terminals under its control,
The present invention relates to a data distribution system in which a server that transmits data is connected via a predetermined network, and the data of the server is distributed to a plurality of wireless terminals via a wireless base station.

[0002]

2. Description of the Related Art In a communication system using wireless devices, various contents can be broadcast from one wireless base station to a large number of unspecified wireless terminals using the same wireless channel. In the case of delivering such content, the content data is arranged on a server connected to the network. The wireless base station is connected to the server via the network.

When actually delivering contents,
The owner of the content and the owner of the wireless system need to perform the procedures described below. The content owner prepares the content data, stores it in the server, and processes the server to start the broadcast distribution. In addition, the content owner creates a file called content data information, which stores information (IP address and port number) necessary for receiving data for broadcast distribution for each content. The content data information is broadcast to the receiving terminals or placed on the server.

The owner of the wireless system determines the operation of the wireless base station so that the wireless base station broadcasts the content distributed from the server to a plurality of wireless terminals. Furthermore, as in the case where the content data information (IP address or port number) does not exist on the WEB,
When the terminal cannot directly access the content data information, the owner of the wireless system acquires the content data information and operates the wireless base station so that the wireless base station broadcasts it to multiple wireless terminals. To decide.

In the wireless terminal which is going to receive the content, the corresponding content data information is received from the wireless base station as the broadcast distribution or is obtained by inquiring to the WEB server, and the desired content data information is obtained by using the content data information. Receive content as a broadcast delivery.

[0006]

In the conventional data distribution system, if the owner of the wireless system and the administrator of the server that distributes the content (or the content owner) are different, the owner of the wireless system Even if the content is desired to be distributed by the server, it can be distributed to the wireless system and the wireless terminal except for the specific content that can be distributed from the server by the procedure of the server administrator or the content owner. Can not.

That is, even if a large number of contents are stored on the server, all contents cannot be delivered to the wireless system and the wireless terminal unless the server administrator performs a predetermined procedure. However, the owner of the wireless system cannot freely select the content to be distributed to the wireless terminals under its control. In addition, when the wireless base station distributes the content, it is necessary to use information such as the IP address used by the server for distributing the corresponding content. It is necessary to obtain the information from the owner of the content, etc., and both the owner of the wireless system and the owner of the content need a troublesome procedure.

According to the present invention, even if the owner of the wireless system and the owner of the content or the administrator of the server are different, the desired content can be distributed by a relatively simple procedure by the owner of the wireless system. It is an object of the present invention to provide a data distribution system that enables

[0009]

According to a first aspect of the present invention, a wireless base station that broadcasts received data to a plurality of wireless terminals under its control and a server that sends the data are connected via a predetermined network. In a data distribution system that distributes data of the server to a plurality of wireless terminals via a wireless base station, at least one base station identifier representing a specific wireless base station and a plurality of data stored in the server. At least one data identifier representing specific data in the data, and a distribution control device having an identifier transmitting means for transmitting the base station identifier and the data identifier to the server is connected to the network, and the server includes Data storage means for holding a plurality of data, and data for selecting specific data corresponding to the data identifier received from the distribution control device And-option means, characterized in that a data transmission means for transmitting the selected data of the data selecting means to a particular radio base station corresponding to a base station identifier received from said distribution control apparatus.

In the first aspect, the content to be distributed is determined by the data identifier transmitted by the distribution control device, and the radio base station for data distribution is determined by the base station identifier transmitted by the distribution control device. Therefore, if all distributable contents are arranged on the server in advance, the contents actually distributed can be freely changed only by the operation on the distribution control device side.

That is, even when the owner of the wireless system and the distribution control device is different from the owner of the content (or the server administrator), the owner of the wireless system and the distribution control device only performs the procedure for distribution. You can change the content. The content owner does not need to perform any special operation or procedure for the content that is actually distributed, as long as all the content is placed on the server.

According to a second aspect of the present invention, a wireless base station that broadcasts received data to a plurality of wireless terminals under the control thereof and a server that transmits the data are connected via a predetermined network, and the data of the server is stored. In a data distribution system that distributes to a plurality of wireless terminals via a wireless base station, at least one data identifier representing specific data among a plurality of data stored in the server, which is connected to the network, is held, A distribution control device having an identifier transmitting means for transmitting a data identifier to the server, and a subordinate network connected to the network, receiving broadcast data transmitted from the server, and including at least one wireless base station. Data transfer means for transferring the broadcast data to the first device to which it belongs, and according to a request from the first device. A data transfer device including a transfer control device that controls the operation of the data transfer device is provided, and the server corresponds to a data storage device that holds a plurality of data and a data identifier received from the distribution control device. Data selection means for selecting specific data to be performed and data transmission means for transmitting the data selected by the data selection means to the data transfer device as broadcast data via a network are provided.

In the second aspect, the content to be distributed is determined by the data identifier sent by the distribution control device. Therefore, if all the distributable contents are arranged on the server in advance as in the case of claim 1, the actually distributed contents can be freely changed only by the operation of the distribution control device side. Further, in claim 2, the content data is broadcast from the server and reaches the data transfer device. When there is a transfer request from the wireless base station (first device), the data transfer device transfers the content data to the wireless base station. Therefore, only the specific wireless base station for which the transfer request has been made will deliver the content.

According to a third aspect of the present invention, in the data delivery system according to the second aspect, the server is provided with delivery information such as an address necessary for using the broadcast data transmitted by the data transmitting means to the delivery control device. Data delivery information transmitting means for transmitting is further provided, and the delivery control device is further provided with data delivery information transferring means for transmitting the delivery information received from the server to at least one radio base station. And

For example, in order to receive specific data distributed by broadcast in an IP (Internet Protocol) network, an IP multicast address or port number used in the broadcast distribution, that is, distribution information is required. .
In the third aspect, the distribution information of the data distributed by the data distribution information transmitting means on the server is sent to the distribution control device. The distribution control device transmits the distribution information received from the server to the subordinate wireless base station. Therefore, the wireless base station that has received the distribution information can specify the data to be received.

According to a fourth aspect of the present invention, in the data distribution system according to the first or second aspect, the server includes list information including a data identifier and heading information regarding each of a plurality of data stored in the data storage means. And a list information transmitting unit that transmits the list information to the distribution control device, and visually outputs the list information received from the server to the distribution control device. And a data identifier selecting unit for selecting a data identifier corresponding to specific data from the list information according to an input from an operator.

According to another aspect of the present invention, the server creates list information including a data identifier and heading information regarding each of the plurality of data stored in the data storage means, and transmits the list information to the distribution control device. . As the headline information, for example, a title of the content or an image representing the content may be used. Since the distribution control device visually outputs the list information received from the server, the operator who manages the distribution control device can grasp a large number of contents accumulated in the server, and among the contents, The content to be delivered can be determined. According to the operator's input, the distribution control device selects the data identifier of the selected content. This data identifier is transferred to the server, and the content actually distributed by the server is determined.

According to a fifth aspect of the present invention, in the data distribution system according to the first or second aspect, the server stores the distribution information such as an address required for receiving the data distributed by the server. Distribution information storage means for holding each of the plurality of generated data, distribution information selection means for selecting distribution information associated with one or more data identifiers selected by the distribution control device, and the distribution information A list creating unit that creates list information including the distribution information and the header information of the data based on the plurality of distribution information selected by the selecting unit, and a list broadcast that broadcasts the list information created by the list creating unit. A delivery means is further provided.

In the present invention, the list information is created on the server so as to reflect the change in the selection state of the contents in the distribution control device, and the list information is broadcast from the server. This list information is a list of contents that can be received by the wireless terminal used by the user, and the user can use this as a program guide. The program guide distributed by the server can be received by each wireless terminal.

According to a sixth aspect of the present invention, in the data delivery system according to the first or second aspect, the server stores the delivery information such as an address required for receiving the data to be broadcasted to the server. Distribution information storage means for holding each of the plurality of generated data, distribution information selection means for selecting distribution information associated with one or more data identifiers selected by the distribution control device, and the distribution information A list creating unit that creates list information including the distribution information and the header information of the data based on the plurality of distribution information selected by the selecting unit, and distributes the corresponding data to the list information created by the list creating unit. List information transmitting means for transmitting the list information to the existing wireless base station.

In the present invention, the list information is created on the server so as to reflect the change in the selection state of the contents in the distribution control device, and the list information is transmitted to the wireless base station distributing the corresponding contents. Sent from the server. This list information is a list of contents that can be received by the wireless terminal used by the user, and the user can use this as a program guide. The program guide transmitted from the server can be received by each wireless terminal via the wireless base station.

According to a seventh aspect of the present invention, in the data delivery system according to the fifth aspect, when the server starts the delivery of the list information, the server delivers delivery information such as an address required to receive the list information. Is further provided to the distribution control device, and the distribution control device notifies the distribution control device of the distribution information notified from the distribution information notification device of the server to the wireless base station. A transfer means is further provided.

In claim 7, when the server delivers the list information, the delivery information reaches the wireless base station via the delivery control device. Therefore, the wireless base station can immediately deliver the list information delivered from the server to the subordinate wireless terminals by using the received delivery information. According to an eighth aspect of the present invention, in the data delivery system according to the sixth aspect, when the server starts delivery of the list information, delivery information such as an address required for receiving the list information is transmitted to the wireless base station. It is characterized in that a delivery information notifying means for notifying the station is further provided.

In claim 8, when the server delivers the list information, the delivery information also reaches the wireless base station. Therefore, the wireless base station can immediately deliver the list information delivered from the server to the subordinate wireless terminals by using the received delivery information.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) One embodiment of a data distribution system of the present invention is shown in FIG.
This will be described with reference to FIG. This form corresponds to the specific example of claim 1.

FIG. 1 is a block diagram showing a configuration example of a communication system. FIG. 2 is a block diagram showing the configuration of the server of this form. FIG. 3 is a schematic diagram showing the structure of data information. FIG. 4 is a block diagram showing the configuration of the delivery control device of this embodiment. FIG. 5 is a block diagram showing the configuration of the wireless system of this embodiment. FIG. 6 is a sequence diagram showing the operation of the data distribution system of this embodiment.

In this embodiment, the wireless terminal, the wireless base station, the server, the network, the identifier transmitting means, the distribution control device, the data storing means, the data selecting means and the data transmitting means of claim 1 are the wireless terminal 50 and the wireless base, respectively. Station 40,
Server 10, network 20, base station identifier transmitter 3
2 (data identifier transmission unit 33), distribution control device 30, data storage unit 11, data selection unit 15, and data transmission unit 1
Corresponds to 6.

In this embodiment, as shown in FIG.
0, the network 20, the distribution control device 30, the wireless base station 40, and the wireless terminal 50 are used to assume that the data of various contents stored in the server 10 is distributed to the wireless terminal 50 owned by the user. There is.
One or a plurality of servers 10 and one or a plurality of radio base stations 40 are connected to the network 20, respectively. Each wireless terminal 50 existing within the range of the wireless zone formed by the wireless base station 40 can communicate with the wireless base station 40. Further, the wireless base station 40 can broadcast data to a plurality of wireless terminals 50 under its control using the same wireless channel (common wireless connection). The content data transmitted from the server 10 is distributed to the wireless terminal 50 by the broadcast transmission of the wireless base station 40.

In this example, it is assumed that the owner (or administrator) of the wireless system including the wireless base station 40 and the owner of the content (or administrator of the server 10) are different. The distribution control device 30 is also owned by the owner of the wireless system. The delivery control device 30 is used by the owner of the wireless system to control the content delivered to the user.

As shown in FIG. 2, the server 10 includes a data storage unit 11, a data information storage unit 12, a data identifier reception unit 13, a base station identifier reception unit 14, a data selection unit 15, and a data transmission unit 16. There is. Data storage unit 11
Is a storage device such as a hard disk. In the data storage unit 11, for example, by the operation of the content owner,
Various types of content data 17 that the content owner wants to deliver to the user are stored in advance. The content data 17 includes, for example, a plurality of moving images, a plurality of still images, and a plurality of text documents.

The data identifier receiving unit 13 receives the data identifier output from the distribution control device 30 via the network 20. This data identifier is information necessary for identifying the content data 17 to be distributed, and is, for example, the content content, data file name, identification number, or the like. The base station identifier receiving unit 14 includes the delivery control device 3
The base station identifier transmitted from 0 is received via the network 20. The base station identifier is information for specifying the wireless base station 40 used for distributing the content data 17, and for example, the IP address assigned to the specific wireless base station 40 is used as the base station identifier.

The data information storage unit 12 holds data information as shown in FIG. This data information is
It is composed of the numbers, locations, file names, names, etc. of all the content data 17 stored in the data storage unit 11, and is used for searching the content data 17. That is, the specific content data 17 corresponding to the data identifier received by the data identifier receiving unit 13 can be found from the data storage unit 11 by referring to the data information.

When the data identifier receiving unit 13 receives the data identifier, the data selecting unit 15 finds the specific content data 17 corresponding to the data identifier from the data information in the data information storage unit 12, and then the content data 17 Is taken out from the data storage unit 11 and given to the data transmission unit 16.

The data transmission unit 16 transmits the specific content data 17 input from the data selection unit 15 via the network 20. The destination of the content data 17 is the specific radio base station 40 corresponding to the base station identifier received by the base station identifier receiving unit 14. The delivery control device 30 includes an identifier storage unit 31, a base station identifier transmission unit 32, and a data identifier transmission unit 33, as shown in FIG. The identifier storage unit 31 is composed of, for example, a semiconductor memory. The identifier storage unit 31 holds a base station identifier ID1 and a data identifier ID2.

The base station identifier transmission unit 32 transmits the base station identifier ID1 held in the identifier storage unit 31 to the server 10 via the network 20. Further, the data identifier transmission unit 33 sends the data identifier ID2 held in the identifier storage unit 31 to the server 1 via the network 20.
Send to 0. On the other hand, as shown in FIG.
Has a data receiving unit 41 and a data broadcast delivering unit 42. The data receiving unit 41 receives the content data 17 delivered to the wireless base station 40 via the network 20.

The data broadcasting distribution unit 42 is the data receiving unit 4
The received content data 17 of No. 1 is converted into a wireless signal and is broadcast to the wireless terminals 50 under its control. Each wireless terminal 50 receives the wireless signal transmitted by the wireless base station 40, and demodulates and distributes the distributed content data 17 by the broadcast data receiving unit 51. Next, the operation of the entire data distribution system of this form will be described with reference to FIG. It is assumed here that the content owner has already stored all the content data 17 in the data storage unit 11 of the server 10.

Further, a specific radio base station 4 which is used by the administrator who operates the distribution control device 30 to distribute the content in advance.
It is assumed that a base station identifier representing 0 and a data identifier representing the specific content data 17 to be distributed are obtained and stored in the identifier storage unit 31.

When the distribution of the content data 17 is to be started, the base station identifier and the data identifier are first transmitted from the distribution control device 30 (S11, S1).
2). These base station identifier and data identifier are received by the server 10. The server 10 sets the specific content data 17 corresponding to the received data identifier in step S
Select with 13. The selected content data 17 is
Specific radio base station 40 corresponding to the received base station identifier
(S14).

Upon receiving the content data 17 from the server 10, the wireless base station 40 starts the broadcast transmission of the content data 17. By this broadcast transmission, the content data 17 is distributed to the plurality of wireless terminals 50 under the control of the wireless base station 40. Content data to be distributed 17
Is determined by the data identifier transmitted by the distribution control device 30 to the server 10, so that the distribution control device 30 does not require any special operation or procedure by the content owner.
It is possible to change the content data 17 to be distributed simply by changing the data identifier sent by. Therefore, even if the system owner (the owner of the wireless base station 40 and the delivery control device 30) is different from the owner of the content data 17 or the administrator of the server 10, the system owner is free to make decisions. The content to be distributed can be changed.

(Second Embodiment) FIGS. 7 to 1 show another embodiment of the data distribution system of the present invention.
2 will be described. This form corresponds to claims 2 and 3. FIG. 7 is a block diagram showing a configuration example of a communication system. FIG. 8 is a block diagram showing the configuration of the server of this form. FIG. 9 is a block diagram showing the configuration of the delivery control device of this embodiment. FIG. 10 is a block diagram showing the configuration of the data transfer device of this embodiment. FIG. 11 is a block diagram showing the configuration of the wireless system of this embodiment. Figure 1
2 is a sequence diagram showing the operation of the data distribution system of this embodiment.

This form is a modification of the first embodiment. 7 to 12, elements corresponding to those in the first embodiment are designated by the same reference numerals. The same elements will not be described below. In this form, claim 2
Identifier transmission means, delivery control device, first device, data transfer means, transfer control means, data transfer device, server, data storage means, data selection means and data transmission means,
The data identifier receiving unit 13, the distribution control device 30,
It corresponds to the wireless base station 40, the data transfer control unit 62, the transfer request receiving unit 61, the data transfer device 60, the server 10, the data storage unit 11, the data selecting unit 15, and the data broadcast transmitting unit 18.

The data delivery information transmitting means and the data delivery information transferring means of claim 3 correspond to the data delivery information transmitting section 19 and the data delivery information transmitting section 36, respectively. In this embodiment, as shown in FIG. 7, data of various contents stored in the server 10 is used by using a communication system including a server 10, a network 20, a delivery control device 30, a wireless base station 40, a wireless terminal 50 and a data transfer device 60. Is assumed to be delivered to the wireless terminal 50 owned by the user.

That is, in this embodiment, the radio base station 40 is connected to the network 20 via the data transfer device 60. One or more servers 10 are connected to the network 20. Further, one or a plurality of radio base stations 40 are connected to the data transfer device 60. Radio base station 4
Each wireless terminal 50 existing within the wireless zone formed by 0 can communicate with the wireless base station 40. In addition, the wireless base station 40 has a plurality of wireless terminals 50 under its control.
To the same wireless channel (common wireless connection)
Can be used to broadcast data. Server 1
The data of the content transmitted from 0 is the wireless base station 4
It is delivered to the wireless terminal 50 by the broadcast transmission of 0.

In this example, it is assumed that the owner (or administrator) of the wireless system including the wireless base station 40 and the owner of the content (or administrator of the server 10) are different. The distribution control device 30 is also owned by the owner of the wireless system. The delivery control device 30 is used by the owner of the wireless system to control the content delivered to the user.

As shown in FIG. 8, the server 10 includes a data storage unit 11, a data information storage unit 12, a data identifier reception unit 13, a data selection unit 15, a data broadcast transmission unit 18, and a data distribution information transmission unit 19. Equipped. Similar to the first embodiment, the data identifier receiving unit 13 receives the data identifier output from the distribution control device 30. Also,
The data selecting unit 15 selects the specific content data 17 corresponding to the data identifier received by the data identifier receiving unit 13, retrieves it from the data storage unit 11 and gives it to the data broadcast transmitting unit 18.

The data broadcast transmission unit 18 includes the data selection unit 1
The selected content data 17 of No. 5 is transferred to the network 20.
Broadcast to. By this broadcast transmission, the content data 17 is delivered to the data transfer device 60 via the network 20. The data distribution information transmission unit 19
The data broadcast transmission unit 18 acquires the data distribution information used in the broadcast transmission of the content data 17, that is, the information of the IP address and the port number from the data broadcast transmission unit 18, and directs it to the distribution control device 30. To send. The data distribution information transmitted by the data distribution information transmitting unit 19 reaches the distribution control device 30 via the network 20.

As shown in FIG. 9, the distribution control device 30 includes an identifier storage unit 31, a data identifier transmission unit 33, a data distribution information reception unit 35, and a data distribution information transmission unit 36. Similar to the first embodiment, the data identifier transmission unit 33 transmits the data identifier held in the identifier storage unit 31 to the server 10 via the network 20. The data distribution information receiving unit 35 receives the data distribution information transmitted from the server 10 from the network 20.

The data distribution information transmitting section 36 transmits the data distribution information received by the data distribution information receiving section 35 to the wireless base station 40. That is, the destination is the identifier storage unit 3
1 is the radio base station 40 corresponding to the base station identifier ID1 that is held by 1. This data distribution information is transmitted to the wireless base station 40 via the network 20 and the data transfer device 60.
Be delivered to.

As shown in FIG. 10, the data transfer device 60 comprises a transfer request receiving section 61, a data transfer control section 62 and a router 63. The router 63 is the network 20
And the wireless base station 40. That is, each wireless base station 40 passes through the router 63 and the network 20.
Connected with. The transfer request receiving unit 61 receives the data transfer request sent from the wireless base station 40 and notifies the data transfer control unit 62 of the data transfer request. This data transfer request includes, for example, IGMP (Internet Group Management Protocol).
A message using is used. This data transfer request is transmitted when the subordinate radio base station 40 wants to receive the broadcast data.

The data transfer control unit 62 controls the router 63 according to the received data transfer request to control the transfer of the content data 17. That is, when the content data 17 corresponding to the data transfer request is not yet transferred to the subordinate radio base station 40,
The transfer of the content data 17 is started. As shown in FIG. 11, the wireless base station 40 includes a data receiving unit 41, a data broadcast distributing unit 42, a data distribution information receiving unit 43, and a data transfer request transmitting unit 44.

The data distribution information receiving section 43 receives the data distribution information transmitted from the distribution control device 30 from the network 2.
0 and the data transfer device 60. Further, the data distribution information receiving unit 43 notifies the data transfer request transmitting unit 44 of the data distribution information in order to request the transfer of the content data 17 which is distributed according to the received data distribution information. At the same time, the data receiving unit 41 is requested to receive the content data 17.

The data transfer request transmitter 44 creates an IGMP packet representing a data transfer request based on the data distribution information notified from the data distribution information receiver 43, and transmits it to the data transfer device 60. Next, the operation of the entire data distribution system of this aspect will be described with reference to FIG. It is assumed here that the content owner has already stored all the content data 17 in the data storage unit 11 of the server 10.

In addition, a specific radio base station 4 which is used by the administrator who operates the distribution control device 30 in advance to distribute contents.
It is assumed that a base station identifier representing 0 and a data identifier representing the specific content data 17 to be distributed are obtained and stored in the identifier storage unit 31. The owner of the data transfer device 60 may be the same as or different from the owner of the wireless system.

When the distribution of the content data 17 is to be started, the data identifier is first transmitted from the distribution control device 30 (S21). This data identifier is received by the server 10. The server 10 selects the specific content data 17 corresponding to the received data identifier in step S22. Selected content data 17
Is started from the server 10 to the network 20 (S23). As a result, the content data 17 reaches the data transfer device 60.

Further, on the server 10, the data delivery information used for delivering the content data 17 being broadcast, that is, the information such as the multicast IP address and the port number is obtained from the data broadcast transmitting section 18. This data distribution information is transmitted from the server 10 (S2
4) It reaches the distribution control device 30. In the delivery control device 30,
When the data distribution information from the server 10 is received, it is transmitted to the specific wireless base station 40 used for distributing the content data 17 (S25).

Upon receiving the data distribution information from the distribution control device 30, the radio base station 40 sends a data transfer request to the data transfer device 60 in the form of an IGMP message or the like in order to receive the corresponding content data 17. And transmits (S26). The data transfer device 60 follows the data transfer request transmitted from each radio base station 40.
The transfer of the content data 17 is controlled. That is, the requested content data 17 is transmitted to the corresponding wireless base station 4
If it has not been transferred to 0, the transfer of the content data 17 is started (S27).

As a result, the content data 17 transmitted from the server 10 reaches the wireless base station 40 via the data transfer device 60. The wireless base station 40 is
After transmitting the data transfer request, wait until the corresponding content data 17 is received.
When the reception of is received, the broadcast distribution of the content data 17 to the wireless terminal 50 is started (S28).

As described above, the content data 17 to be distributed can be changed by the data identifier transmitted by the distribution control device 30 even if the owner of the content or the administrator of the server 10 does not perform a special procedure for content distribution. You can Further, the wireless base station 40 can receive the content data 17 by using the data distribution information transmitted from the distribution control device 30, and can broadcast the content data 17 to the wireless terminals 50 under its control by wireless signals. .

(Third Embodiment) Another embodiment of the data distribution system of the present invention will be described with reference to FIGS. This form corresponds to claim 4. FIG. 13 is a block diagram showing the configuration of the server of this form. FIG. 14 is a block diagram showing the configuration of the delivery control device of this embodiment. FIG. 15 is a sequence diagram showing the operation of the data distribution system of this embodiment. FIG. 16 is a front view showing a display example of a data list.

This embodiment is a modification of the first embodiment. 13 to 16, elements corresponding to those in the first embodiment are designated by the same reference numerals. The same elements will not be described below. Further, the features of this embodiment can be similarly applied to the second embodiment, but the description thereof will be omitted. In this form, the list creation means, the list information transmission means, the list information output means, and the data identifier selection means of claim 4 are provided in the list creation unit 101, the list transmission unit 102, the list display unit 106, and the data identifier input unit 107, respectively. Correspond.

In this embodiment, it is assumed that the content data is distributed by using the system shown in FIG. 1 as in the first embodiment. Further, in this embodiment, even if the administrator who operates the distribution control device 30 does not know each content data 17 arranged on the server 10, the distribution control device 30 can easily determine the data identifier to be transmitted to the server 10. You can do it.

In this embodiment, the server 10 is provided with a list creation unit 101 and a list transmission unit 102 as shown in FIG. The list creation unit 101 displays a data list representing all the content data 17 held in the data storage unit 11, for example, HTML (Hyper Text Markup Language).
Create as format information. This data list can be displayed as shown in FIG. 16, for example.

As shown in FIG. 16, this data list is provided with a title 111, an outline 112, an image 113 showing one scene of the content, etc. for each content data 17. The data list also includes a selection unit 114 used for inputting selection of the content data 17 to be distributed. In addition, the data list includes a data identifier for each content data 17.

The list transmission unit 102 transmits the information of the data list created by the list creation unit 101 to the distribution control device 30 via the network 20. The transmission method in this case may be unicast or multicast. On the other hand, the distribution control device 30 includes a list receiving unit 105, a list display unit 106, and a data identifier input unit 107, as shown in FIG.

The list receiving unit 105 receives the information of the data list transmitted from the server 10 from the network 20. The list display unit 106 outputs the information of the data list received by the list receiving unit 105 as visible information using a CRT display, a liquid crystal display, a printer, or the like. Therefore, the administrator who operates the distribution control device 30 can see the data list as shown in FIG.
All content data 1 stored in the server 10
You can grasp the contents of 7.

The data identifier input section 107 is provided with an input device such as a mouse or a keyboard, and receives an input from the administrator of the distribution control device 30. That is, FIG.
The administrator selects the selection unit 11 associated with the specific content data 17 while looking at the screen on which information such as 6 is displayed.
4 is input, the data identifier input unit 107 displays the content data 17 displayed at the input position.
Select the data identifier of.

The data identifier transmission unit 33 sends the data identifier selected by the data identifier input unit 107 to the network 2
It is transmitted to the server 10 via 0. Next, the operation of the entire system will be described with reference to FIG. In the server 10, after all the content data 17 are stored, a data list showing these contents is created (S01). This data list is transmitted from the server 10 to the distribution control device 30 via the network 20 (S0
2).

The distribution control device 30 visually displays the received data list (S03). By checking this display, the administrator of the distribution control device 30 can grasp all the content data 17. When the administrator selects the content data 17, the distribution control device 30 accepts the input (S04), and the selected content data 1
The data identifier corresponding to 7 is specified (S05) and transmitted to the server 10 (S12).

As described above, the administrator of the distribution control device 30 grasps all the content data 17 stored in the server 10 from the data list received by the distribution control device 30, and the specific content data 17 to be distributed. Can be selected. Regarding the distribution operation of the content data 17,
This is the same as in the first and second embodiments.

When the administrator of the delivery control device 30 clicks "stop delivery" in the displayed data list, the input is accepted in step S16, and the data identifier whose delivery should be stopped is specified in step S17. The distribution control device 30 transmits a distribution stop request to the server 10 (S1).
8). Upon receiving this distribution stop request, the server 10 stops distribution of the corresponding content data 17 (S1).
9).

Also in the above-described second embodiment, the data distribution can be stopped by the instruction from the distribution control device 30. In that case, as shown in FIG. 15, not only the distribution control device 30 transmits a distribution stop request to the server 10, but also the distribution control device 30 sends to the wireless base station 40 the data distribution information of the content to be stopped. It is necessary to send a delivery stop request together with it. Upon receiving the distribution stop request, the wireless base station 40 stops transmitting the data transfer request to the data transfer device.

(Fourth Embodiment) Another embodiment of the data distribution system of the present invention will be described with reference to FIGS. This form corresponds to claim 5. FIG. 17 is a block diagram showing the configuration of the server of this form. FIG. 18 is a schematic diagram showing a configuration example of data distribution information. FIG. 19 is a front view showing a display example of a program table.
FIG. 20 is a flowchart showing the operation of the server in response to changes in the data distribution status.

This embodiment is a modification of any one of the first embodiment, the second embodiment and the third embodiment. 17 to 20, elements corresponding to those of the first embodiment are designated by the same reference numerals. The same elements will not be described below. In this form, the delivery information storage means, the delivery information selection means, the list creation means, and the list broadcast delivery means of claim 5 are the data delivery information storage section 202, the data delivery information selection section 204, and the data information list creation section 205, respectively. And data information list broadcast distribution unit 206
Corresponding to.

In this embodiment, as in the case of the first embodiment, a case where content data is distributed using a system system including a server 10, a network 20, a distribution control device 30, a wireless base station 40 and a wireless terminal 50 will be described. I am assuming. Further, in this mode, a data information list, that is, a content of a program guide is created and broadcasted to the wireless terminals 50 so that the user of each wireless terminal 50 can grasp and select the receivable content data 17. To do. Also,
The content of the program guide is created so as to reflect the dynamic change of the distribution status of the content data 17 controlled by the distribution control device 30.

The server 10 includes a data storage unit 11, a data information storage unit 12, and a data selection unit 1 as shown in FIG.
5, data transmission unit 16, data distribution information storage unit 202,
Data distribution information selection unit 204, data information list creation unit 2
05 and a data information list broadcast distribution unit 206. The data selection unit 15 has the same configuration as in the first embodiment.
The specific content data 17 corresponding to the data identifier input from the distribution control device 30 is retrieved from the data storage unit 11.

The data delivery information storage unit 202 is a storage device composed of a hard disk or the like, and holds data delivery information. The data distribution information stored in the data distribution information storage unit 202 is, for example, as shown in FIG.
7 is information necessary for the terminal to receive, that is, a multicast IP address and a port number, and is held for each content data 17 to be distributed.

The data distribution information selection unit 204 acquires the data identifier and the data information corresponding to the content data 17 to be distributed from the data selection unit 15, and the data distribution information corresponding to the acquired data identifier is the data distribution information. It is selectively retrieved from the storage unit 202. The data information list creation unit 205 includes the data distribution information selection unit 2
04 acquires the data information and the data distribution information of the selected content, and creates a data information list, that is, a program guide as a file in the HTML format, for example, based on them.

This data information list can be visually displayed, for example, as shown in FIG. In the data information list shown in FIG. 19, for each content, an image 113 of one scene of the content, which is data information, a title 111 and an outline 112, and a distribution band 115 of the data distribution information are displayed. Of course, the actually distributed data information list also includes information on the multicast IP address and port number necessary for receiving the content, but these are not displayed on the screen.

The data information list, which is a program guide, can be received and displayed by the wireless terminal 50. When the user performs an input operation for selecting a specific content on the displayed program guide, information on the multicast IP address and port number used in the distribution of the specific content data 17 is extracted from the data information list. To be done. Therefore, the wireless terminal 50 uses the specific content data 1 desired by the user.
7 can be received.

Data information list broadcast distribution unit 2 shown in FIG.
06 broadcasts the data information list created by the data information list creation unit 205 to the network 20 as one content. Therefore, each wireless terminal 50 can receive the data information list transmitted by the server 10. In this form, the server 10 executes the operation shown in FIG. 20 in addition to the operation of the other embodiments, and manages the distribution of the data information list. The server 10 according to the instruction from the distribution control device 30.
When the distribution of the content data 17 starts, the operation shown in FIG.

In step S41 of FIG. 20, the server 10
Monitors changes in data distribution status. That is, when starting or stopping the distribution of each content data 17, since the data identifier of the corresponding content data 17 is input from the distribution control device 30 to the server 10, the data distribution status is monitored by monitoring it. Can be checked for changes.

When the data distribution status changes, the process proceeds from step S41 to S42. In step S42, the data selection unit 1 obtains the data identifier and the data information of the content to be newly distributed or the content to be stopped.
Get from 5. In step S43, the data distribution information of the content to be newly started or the content to be stopped is acquired from the data distribution information storage unit 202.

When the distribution of new content is started, the process proceeds from step S44 to S45, and when the distribution of the content being distributed is stopped, the process proceeds from step S44 to S46. In step S45, the information of the content to be newly distributed, that is, the information acquired in steps S42 and S43 is added to the data information list. Step S46
Then, the information of the content whose distribution is to be stopped, that is, the information acquired in steps S42 and S43 is deleted from the data information list.

In step S47, the data information list updated in step S45 or S46 is broadcast to the network 20 as one content, that is, a program guide. Therefore, the content of the program guide distributed to the wireless terminal 50 is sequentially updated so as to reflect the dynamic change of the content data 17 actually distributed from the server 10. The user of the wireless terminal 50 grasps the content data 17 actually distributed by the server 10 from the contents of the program guide and acquires the data distribution information (IP address and port number) necessary for receiving each content data 17. can do.

As described above, the program guide including the data distribution information can be distributed to the user of each wireless terminal 50, and the contents of the program guide can be always maintained in the latest state. (Fifth Embodiment) Another embodiment of the data delivery system of the present invention will be described with reference to FIG. This form corresponds to claim 6.

FIG. 21 is a block diagram showing the configuration of the server of this form. This form is a modification of the fourth embodiment. In FIG. 21, elements corresponding to those in the fourth embodiment are designated by the same reference numerals. The same elements will not be described below. In this form, the distribution information storage means, the distribution information selection means, the list creation means and the list information transmission means of claim 6 are respectively the data distribution information storage section 202, the data distribution information selection section 204, the data information list creation section 205 and It corresponds to the data information list transmission unit 207.

As shown in FIG. 21, the server 1 of this form
0 has a data information list transmission unit 207 instead of the data information list broadcast distribution unit 206. The data information list transmitting unit 207 transmits the data information list created by the data information list creating unit 205 via the network 20 to a specific wireless base station 40 which is a content delivery destination.

The other operation is similar to that of the fourth embodiment. (Sixth Embodiment) Another embodiment of the data delivery system of the present invention will be described with reference to FIG. This form corresponds to claim 7. FIG. 22 is a sequence diagram showing an operation example of the data distribution system. This form is a modification of the fourth embodiment, and it is assumed that a system having the same configuration as that of the fourth embodiment is used.

The operation changed or added in this mode will be described with reference to FIG. The description of the same parts as those in the fourth embodiment will be omitted. Similar to the fourth embodiment, the server 10 creates a data information list (program table) in step S62 according to the data identifier sent from the distribution control device 30 and starts the broadcast distribution thereof. This data information list is delivered to the data transfer device 60 or the like via the network 20.

Further, the server 10 notifies the distribution control device 30 of the data distribution information relating to the contents (program guide) of the data information list having started distribution, that is, the information of the IP multicast address and the port number in step S64. The distribution control device 30 transmits the data distribution information of the program guide notified from the server 10 to the wireless base station 40 (S).
65).

Upon receiving the data distribution information of the program guide, the radio base station 40 sends a data transfer request to the data transfer device 60 to request the transfer of the program guide (S66).
Upon receiving the data transfer request from the wireless base station 40, the data transfer device 60 starts transferring the program guide to the wireless base station 40 accordingly (S67). The wireless base station 40 starts the broadcast distribution of the program guide transferred from the data transfer device 60 to the wireless section (S68).

As described above, when the server 10 starts transmitting the program guide, the wireless base station 40 automatically requests the data transfer device 60 to transfer the program guide, so that the program guide is broadcast to the wireless section. Delivery can start immediately.

(Seventh Embodiment) Another embodiment of the data distribution system of the present invention will be described with reference to FIG. This form corresponds to claim 8. Figure 2
3 is a sequence diagram showing an operation example of the data distribution system. This form is a modification of the fifth embodiment, and it is assumed that a system having the same configuration as that of the fifth embodiment is used.

The operation changed or added in this mode will be described with reference to FIG. The description of the same parts as those in the fifth embodiment will be omitted. Similar to the fifth embodiment, the server 10 creates a data information list (program table) in step S71 according to the data identifier sent from the distribution control device 30, and starts the broadcast distribution thereof. This data information list is transmitted to the wireless base station 40 via the network 20 (S72).

Further, the server 10 transmits the data distribution information used in the broadcast distribution of the data information list (program guide), that is, the IP multicast address and the port number to the radio base station 40 (S73). Radio base station 40
Receives the data information list (program guide) to be distributed using the received data distribution information, and starts the broadcast distribution to the wireless section thereof (S74).

In this way, when the server 10 starts transmitting the program guide, the wireless base station 40 automatically receives the program guide using the received data distribution information, and broadcasts the program guide to the wireless section. You can start right away. Also,
Whether the data transfer method from the server 10 to the wireless base station 40 is unicast / multicast, the user of the wireless terminal 50 receives a program guide showing a list of contents and selects a desired content. You can

[0097]

As described above, according to the present invention, the content owner and the wireless system administrator who wants to determine the content to be distributed decide the content to be broadcast without considering each other. can do.
Since the owner of the content only needs to store the content data in the server and the administrator of the wireless system only needs to select the content, the mutual purpose of distributing the content is achieved.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration example of a communication system.

FIG. 2 is a block diagram showing a configuration of a server according to the first embodiment.

FIG. 3 is a schematic diagram showing a structure of data information.

FIG. 4 is a block diagram showing a configuration of a distribution control device according to the first embodiment.

FIG. 5 is a block diagram showing a configuration of a wireless system according to the first embodiment.

FIG. 6 is a sequence diagram showing an operation of the data distribution system according to the first embodiment.

FIG. 7 is a block diagram illustrating a configuration example of a communication system.

FIG. 8 is a block diagram showing a configuration of a server according to the second embodiment.

FIG. 9 is a block diagram showing a configuration of a distribution control device according to a second embodiment.

FIG. 10 is a block diagram showing a configuration of a data transfer device according to a second embodiment.

FIG. 11 is a block diagram showing a configuration of a wireless system according to a second embodiment.

FIG. 12 is a sequence diagram showing an operation of the data distribution system according to the second embodiment.

FIG. 13 is a block diagram showing a configuration of a server according to a third embodiment.

FIG. 14 is a block diagram showing a configuration of a delivery control device according to a third embodiment.

FIG. 15 is a sequence diagram showing an operation of the data delivery system of the third exemplary embodiment.

FIG. 16 is a front view showing a display example of a data list.

FIG. 17 is a block diagram showing a configuration of a server according to a fourth embodiment.

FIG. 18 is a schematic diagram showing a configuration example of data distribution information.

FIG. 19 is a front view showing a display example of a program table.

FIG. 20 is a flowchart showing the operation of the server in response to changes in the data distribution status.

FIG. 21 is a block diagram showing a configuration of a server according to a fifth embodiment.

FIG. 22 is a sequence diagram showing an operation example of the data distribution system.

FIG. 23 is a sequence diagram showing an operation example of the data distribution system.

[Explanation of symbols]

10 servers 11 Data storage 12 Data information storage 13 Data identifier receiver 14 Base station identifier receiver 15 Data selection section 16 Data transmitter 17 Content data 18 Data Broadcasting Unit 19 Data distribution information transmitter 20 networks 30 Delivery control device 31 identifier storage unit 32 Base Station Identifier Transmission Unit 33 Data identifier transmitter 35 Data Distribution Information Receiver 36 Data distribution information transmitter 40 wireless base stations 41 Data receiver 42 Data Broadcasting Distribution Department 43 Data distribution information receiver 44 Data transfer request transmission unit 50 wireless terminals 51 Broadcast data receiver 60 data transfer equipment 61 Transfer request receiver 62 data transfer control unit 63 router 101 List creation section 102 List transmission unit 105 List receiver 106 List display section 107 data identifier input section 111 title 112 Overview 113 images 114 Selector 115 distribution band 201 data information storage unit 202 data distribution information storage unit 203 data selection section 204 Data distribution information selection section 205 Data information list creation unit 206 Data information list Broadcast distribution unit 207 Data information list transmitter

Claims (8)

[Claims] 1. A wireless base station that broadcasts received data to a plurality of wireless terminals under its control and a server that transmits the data are connected via a predetermined network, and the data of the server is transferred to the wireless base station. In a data distribution system for distributing to a plurality of wireless terminals via, at least one base station identifier representing a specific wireless base station, and at least one representing specific data among the plurality of data stored in the server. A data storage which holds a data identifier and which is connected to the network, and which is provided with an identifier transmitting means for transmitting the base station identifier and the data identifier to the server, and which stores a plurality of data in the server. Means, data selecting means for selecting specific data corresponding to the data identifier received from the distribution control device, and the distribution control device. Specific data distribution system, characterized in that a data transmission means for transmitting the selected data of the data selecting means to the radio base station corresponding to the base station identifier received from. 2. A wireless base station that broadcasts received data to a plurality of wireless terminals under its control and a server that transmits the data are connected via a predetermined network, and the data of the server is transferred to the wireless base station. In a data distribution system for distributing to a plurality of wireless terminals via, at least 1 representing specific data among a plurality of data stored in the server and connected to the network.
Distribution control device, which holds one data identifier and includes an identifier transmitting means for transmitting the data identifier to the server, and at least one wireless base connected to the network and receiving broadcast data transmitted from the server Data transfer means for transferring the broadcast data to a first device belonging to a subordinate network including a station; and transfer control means for controlling the operation of the data transfer means in accordance with a request from the first device. A data transfer device is provided, and the server includes a data storage unit that holds a plurality of data, a data selection unit that selects specific data corresponding to a data identifier received from the distribution control device, and the data. The data selected by the selecting means is transmitted as broadcast data to the data transfer device via the network. Data distribution system, characterized in that a transmission means. 3. The data delivery system according to claim 2, wherein the server sends data to the delivery control device, such as an address necessary for using the broadcast data transmitted by the data transmitting means. Data further comprising distribution information transmission means, and the distribution control device further comprises data distribution information transfer means for transmitting the distribution information received from the server to at least one wireless base station. Delivery system. 4. The data distribution system according to claim 1, wherein the server creates list information including a data identifier and heading information regarding each of the plurality of data stored in the data storage means. List information that further includes a list creating unit and a list information transmitting unit that transmits the list information to the distribution control device, and visually outputs the list information received from the server to the distribution control device. A data distribution system further comprising output means and data identifier selection means for selecting a data identifier corresponding to specific data from the list information according to an input from an operator. 5. The data distribution system according to claim 1 or 2, wherein the server stores a plurality of distribution information such as an address required for receiving the data to be broadcasted. Distribution information storage means for holding each of the data, distribution information selection means for selecting distribution information associated with one or more data identifiers selected by the distribution control device, and the distribution information selection means List creating means for creating list information including the distribution information and header information of the data based on the selected plurality of distribution information, and list broadcasting means for broadcasting the list information created by the list creating means A data distribution system further comprising: 6. The data distribution system according to claim 1 or 2, wherein the server stores a plurality of distribution information such as an address required for receiving the data distributed by broadcast in the data storage means. Distribution information storage means for holding each of the data, distribution information selection means for selecting distribution information associated with one or more data identifiers selected by the distribution control device, and the distribution information selection means A list creating unit that creates list information including the distribution information and the header information of the data based on the selected plurality of distribution information, and a wireless base station that distributes the corresponding data to the list information created by the list creating unit. A data distribution system further comprising list information transmitting means for transmitting to a station. 7. The data distribution system according to claim 5, wherein when the list information is distributed to the server,
Distribution information notifying means for notifying the distribution control device of distribution information such as addresses required when receiving the list information is further provided, and the distribution control device is provided with the distribution information notification means of the server. A data distribution system further comprising distribution information notification transfer means for notifying the wireless base station of the notified distribution information. 8. The data distribution system according to claim 6, wherein when the server starts distribution of the list information, the server stores distribution information such as an address required to receive the list information. A data distribution system further comprising distribution information notifying means for notifying a station.