JP2009135790A - System and method for information distribution, and server apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system and a method for information distribution, which efficiently use wireless resources and more improve convenience for content providers and users. <P>SOLUTION: The information distribution system has a mobile communication system which distributes individual data to wireless terminals through MBMS and simultaneously distributes the same data to a plurality of wireless terminals. In addition, the information distribution system also has a server apparatus which stores distribution information that wireless terminals which request data distribution are linked to wireless base stations which are to be connected to the wireless terminals as a database, selects a point to multi-point system or a point to point system to distribute data to wireless terminals based on the database, and notifies the mobile communication system of the selection result. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information distribution system, an information distribution method, and a server device that use a multicast multimedia broadcast service (MBMS) technique.

  In recent years, MBMS has attracted attention as a technique for distributing large volumes of data such as multimedia data. MBMS is a technology standardized by 3GPP (3rd Generation Partnership Project) that can simultaneously distribute data of a plurality of channels (hereinafter referred to as contents) to a large number of people using an existing mobile communication system.

  In MBMS, point-to-multipoint (Point to Multi Point) system that distributes the same content to multiple radio terminals (UE: User Equipment) at the same time as in television broadcasting, and content distribution to each UE individually by packet communication Data distribution combining a point-to-point method is possible. Hereinafter, the point-to-multipoint method is referred to as a PtM method, and the point-to-point method is referred to as a PtP method.

  A method for selecting a content distribution method (PtM or PtP) for each UE in MBMS is described in, for example, Patent Document 1 and Patent Document 2.

In Patent Literature 1 and Patent Literature 2, when the number of UEs that provide MBMS services located in a cell exceeds a preset threshold, content is delivered to each UE in the PtM method, and when the number is less than the threshold, each UE Describes that content is distributed by the PtP method. Patent Document 1 describes that each UE is notified of channel information used in accordance with a content distribution method.
JP 2004-135292 A JP 2005-348392 A

  In the systems described in Patent Document 1 and Patent Document 2 described above, a content distribution method (PtM method or PtP method) for each user's UE is selected for the purpose of efficiently using radio resources. Therefore, it is not always possible to select a distribution method desired by a provider who provides content or a user who receives content.

  For example, when the number of users in a cell desiring content distribution is greater than the number of users expected by the content provider, the distribution method is likely to be limited to the PtM method. In that case, since the delivery time of the content is limited to the time determined by the provider, the convenience for the user who uses MBMS is reduced. In addition, the content provider may reduce the usage rate of the content provided by the user due to restrictions on the distribution method and distribution time.

  The present invention has been made to solve the above-described problems of the prior art, and is an information distribution system that can efficiently use radio resources and improve the convenience of content providers and users. An object is to provide an information distribution method and a server device.

In order to achieve the above object, an information distribution system of the present invention is a mobile communication system capable of distributing individual data to a wireless terminal and simultaneously distributing the same data to a plurality of wireless terminals by a multicast multimedia broadcasting service,
Distribution information, which is reported from the mobile communication system and associates a wireless terminal requesting distribution of the data with a wireless base station to which the wireless terminal is connected, is stored as a database, and the wireless terminal is based on the database. A server device that selects whether to distribute the data in a point-to-multipoint manner or to distribute the data in a point-to-point manner, and notifies the mobile communication system of the selection result;
Have

On the other hand, the information distribution method of the present invention is a report of the data reported from a mobile communication system capable of distributing individual data to a wireless terminal and simultaneously distributing the same data to a plurality of wireless terminals by a multicast multimedia broadcasting service. The distribution information associating the wireless terminal requesting distribution with the wireless base station to which the wireless terminal is connected is stored in the data storage device as a database,
A method of selecting whether to distribute the data in a point-to-multipoint manner or in a point-to-point manner based on the database and notifying the mobile communication system of the selection result. .

The server device of the present invention is a server device connected to a mobile communication system capable of distributing individual data to a wireless terminal and simultaneously distributing the same data to a plurality of wireless terminals by a multicast multimedia broadcasting service. ,
A data storage device that stores, as a database, distribution information that is reported from a mobile communication system and associates a wireless terminal that requests distribution of the data with a wireless base station to which the wireless terminal is connected;
A processing device for selecting whether to distribute the data in a point-to-multipoint manner or to deliver the data to the wireless terminal based on the database, and notifying the selection result to the mobile communication system; ,
Have

  ADVANTAGE OF THE INVENTION According to this invention, while using a radio | wireless resource efficiently, the convenience of a content provider and a user improves more.

Next, the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing a configuration example of the information distribution system of the present invention, and FIG. 2 is a block diagram showing a specific configuration example of the mobile communication system shown in FIG. FIG. 3 is a block diagram showing a configuration example of the server apparatus shown in FIG.

  As shown in FIG. 1, the information delivery system of the present invention is capable of delivering individual data to UE2 by MBMS and simultaneous delivery of the same data to a plurality of UE2, and reports from mobile communication system 1 The distribution information associating UE2 of each user who requested the distribution of content with the radio base station to which the UE2 is connected is stored as a database, and a content distribution method for each UE2 is selected based on the database The server apparatus 104 notifies the mobile communication system of the selection result.

  As shown in FIG. 2, a mobile communication system includes a multicast / broadcast service center (BM-SC) 100, a packet radio service support node (GGSN) 101, A service packet radio service support node (SGSN) 102 and a radio access network (RAN) 103 are provided.

  BM-SC100 manages the content delivered by MBMS, and delivers the content which the user desires to each UE2. The BM-SC 100 of the present embodiment uses the PtM method when distributing content for the first time, and associates the UE 2 of each user who requested distribution of the content with the radio base station to which the UE 2 is connected. The distribution information is reported to the server device 104.

  The GGSN 101 and the SGSN 102 are devices that control content data transmission paths in packet communication. The GGSN 101 corresponds to a gateway server in the mobile communication system, and the SGSN 102 corresponds to a packet switch in the mobile communication system. UE2 can acquire various contents from BM-SC100 via GGSN101 and SGSN102.

  The RAN 103 includes a known radio network controller (RNC) and a radio base station (Node B), and transmits / receives data to / from each UE 2 in a cell that can communicate with the radio base station by radio communication. When the RAN 103 receives a request for content by MBMS from the UE 2, the RAN 103 sets a connection path (U-Plane) for transmitting the content data between the BM-SC 100 and the UE 2. In addition, when distributing content by the PtM method, the RAN 103 allocates one radio channel (FACH) to a plurality of UEs 2 and simultaneously distributes the same content to each user using the FACH. In addition, when distributing content by the PtP method, the RAN 103 allocates a radio channel (DCH) to each UE 2 and distributes individual content to each user using the DCH.

  The server device 104 is connected to, for example, the BM-SC 100 and accumulates the distribution information reported from the BM-SC 100 as a database. The distribution information includes information for identifying the UE 2 to which the content is distributed, information for identifying the radio base station to which the UE 2 is connected, connection time information indicating the distribution time of the content for the UE 2, and the content Name (content name) and the like.

  The server device 104 counts the number of UE2 connections to the radio base station for each content based on the distribution information stored in the database. Then, in the radio base station where the number of connections with the UE 2 is greater than a preset threshold value (high audience rating), the BM-SC 100 is instructed to distribute the corresponding content by the PtM method. In addition, in the radio base station whose number of connections with UE2 is equal to or less than the threshold value (low audience rating), the BM-SC 100 is instructed to allow distribution of the corresponding content in any of the PtM method and the PtP method. In that case, the BM-SC 100 may distribute the content by, for example, a distribution method requested by the content provider or a distribution method desired by the user.

  Further, the server device 104 may select a distribution method of the content in a predetermined region unit including a radio base station that counts the number of UEs 2 connected to the content and radio base stations arranged in the vicinity thereof. For example, when there is a radio base station in which the number of UE2 connections to content exceeds a threshold in a predetermined area, the BM-SC 100 may be instructed to distribute the content to the entire area using the PtM method.

  Further, the server device 104, for example, in accordance with an operation from the content provider, based on the information stored in the database, the region and time distributed by the PtM method, and the region and time distributed by the PtP method Are output in units of content.

  In the information distribution system of the present invention, even for the same content, there are simultaneously cells distributed by the PtM method and cells distributed by the PtP method. Therefore, when the cell in which the UE 2 is located is switched as a result of the movement of the user who owns the UE 2, it may be necessary to switch to a different delivery method even for the same content.

  Therefore, the RAN 103 according to the present embodiment reports the movement status between cells for each user to the BM-SC 100, and the BM-SC 100 generates a movement of a user between cells that are distributed in different manners for the same content. The UE 2 is notified of switching to the channel used in the delivery method of the destination. In that case, the RAN 103 or the SGSN 102 exchanges information using a predetermined signaling message with the UE 2 moving between cells, thereby executing a connection switching process between the UE 2 and the BM-SC 100.

  As illustrated in FIG. 3, the server device 104 includes a processing device 10 that executes predetermined processing according to a program, an input device 20 for inputting commands and information to the processing device 10, And an output device 30 for monitoring the processing result.

  The processing device 10 includes a CPU 11, a main storage device 12 that temporarily holds information necessary for the processing of the CPU 11, and a recording medium 13 on which a program for causing the CPU 11 to execute the processing of the information distribution method of the present invention is recorded. The data storage device 14 used as the database, the memory control interface unit 15 that controls data transfer with the main storage device 12, the recording medium 13, and the data storage device 14, the input device 20, and the output device 30. An I / O interface unit 16 that is an interface device and a communication control device 17 that is an interface for controlling communication with the BM-SC 100 are provided and are connected via a bus 18.

  The processing device 10 executes processing for information distribution of the present invention described below according to a program recorded on the recording medium 13. The recording medium 13 may be a magnetic disk, a semiconductor memory, an optical disk, or other recording medium. Further, the data storage device 14 does not need to be provided in the server device 104, and may be a device independent of the server device 104.

  As for the BM-SC 100, the GGSN 101, the SGSN 102, and the RAN 103, a well-known device included in an existing mobile communication system may be used, and thus detailed description thereof is omitted here.

  Next, a processing procedure of the information distribution method according to the first embodiment will be described with reference to flowcharts shown in FIGS.

  4 to 6 are flowcharts showing a processing procedure of the information distribution method according to the first embodiment. 4 shows a processing procedure of the BM-SC 100, the RAN 103, and the server device 104 when a database is constructed by the server device, and FIG. 5 shows a processing procedure when the server device selects a distribution method. FIG. 6 shows a process in the case where cells that distribute the same content by the PtM method and the PtP method coexist and the UE 2 moves from a cell that is distributed by the PtM method to a cell that is distributed by the PtP method. The procedure is shown.

  As shown in FIG. 4, when content distribution by MBMS is requested from the user's UE2 (step 1-1), the RAN 103 identifies an identifier (IMSI: International Mobile Subscriber Identity) for identifying the user's UE2. Information for identifying a radio base station connected to the UE 2 (radio base station information) and connection time information indicating the delivery time of content for the UE 2 are notified to the BM-SC 100 (step 1-2).

  When the content distribution time comes, the BM-SC 100 instructs the RAN 103 to connect to each UE 2 using the FACH (step 1-3). The RAN 103 automatically uses the FACH according to the instruction from the BM-SC 100. Connections are established with a plurality of UEs 2 who wish to view the content in the cell (step 1-4). When the connection with each UE 2 is established, the content provided from the BM-SC 100 is simultaneously distributed to a plurality of UEs 2 by FACH.

  The BM-SC 100 reports the IMSI, the radio base station information and the connection time information, and the content name of the user who distributes the content notified from the RAN 103 in Step 1-2 to the server device 104 as distribution information (Step). 1-5).

  The server apparatus 104 stores the distribution information reported from the BM-SC 100 in a database (Step 1-6). An example of the database stored in the server device 104 at this time is shown in Table 1 below.

  When content distribution is started, the RAN 103 determines whether or not there is a cell movement request for each user of the content being distributed (step 1-7). And if the movement of UE2 is detected, the change of the radio base station of the connection destination with this UE2 will be notified to BM-SC100 (step 1-8).

  BM-SC100 will notify the server apparatus 104 of the information of the wireless base station connected after movement of this UE2, if the change of the wireless base station of the connection destination of UE2 is notified from RAN103 (step 1-9).

  The server device 104 adds the movement history of the radio base station information connected to each UE 2 to the database according to the report from the BM-SC 100 (step 1-10), returns to the processing of step 1-7, and returns to step 1- Repeat the process up to 10. The processing from step 1-7 to step 1-10 is continued until UE2 finishes receiving the content by MBMS.

  As shown in FIG. 5, the server apparatus 104 counts the number of connections of the UE 2 to the radio base station for each content based on the distribution information stored in the database (step 2-1), and the number of connections is preset. It is determined whether the threshold value is exceeded (step 2-2). This threshold value can be adjusted using a variable. The server apparatus 104 instructs the BM-SC 100 to continuously deliver the corresponding content by the PtM method at the radio base station having the number of connections with the UE 2 greater than the threshold based on the determination result of step 2-2. In addition, the radio base station whose number of connections with the UE 2 is equal to or less than the threshold value instructs the BM-SC 100 to allow distribution of the corresponding content in any of the PtM method and the PtP method.

  The BM-SC 100 selects a distribution method according to a content provider or user's request at a radio base station that accepts both the PtM method and the PtP method according to an instruction from the server device 104, or a distribution method in units of regions. The content is distributed by the PtM method or the PtP method in accordance with a predetermined selection method such as determining (step 2-3). Also, the content is distributed by the PtM method to the UE 2 in the cell instructed to distribute by the PtM method (step 2-4).

  As shown in FIG. 6, when a cell that can be distributed by the PtP method and a cell that can be distributed by the PtM method coexist, when the user UE2 requests distribution of content by MBMS (step 3-1), the RAN 103 BM includes an identifier (IMSI) for identifying the user's UE2, information for identifying a radio base station connected to the UE2 (radio base station information), and connection time information indicating a content delivery time for the UE2. -It notifies to SC100 (step 3-2).

  The BM-SC 100 makes an inquiry to the server device 104 to determine whether or not to distribute the content to the user's UE2 by the PtM method (step 3-3). When distributing by the PtM method, the FACH is used. The RAN 103 is instructed to connect to the UE 2 (step 3-4). In the case of distribution using the PtP method, the RAN 103 is instructed to connect to the UE 2 using the DCH (step 3-5).

  The RAN 103 establishes a connection with each UE 2 in its own cell using the DCH or FACH according to the instruction from the BM-SC 100 (step 3-6). When the connection with each UE2 is established, the content from the BM-SC 100 is distributed to each UE2 using DCH or FACH.

  The BM-SC 100 reports the IMSI, the radio base station information and the connection time information, and the content name of the user who distributes the content notified from the RAN 103 in step 3-2 to the server device 104 as distribution information (step). 3-7).

  The server device 104 updates the database based on the distribution information reported from the BM-SC 100 (Step 3-8).

  When the content distribution is started, the RAN 103 determines whether or not there is a cell movement request for each user of the distributed content (step 3-9). And if a user's movement of UE2 is detected, the change of the wireless base station of the connection destination with this UE2 will be notified to BM-SC100 (step 3-10).

  When the RAN 103 is notified of the change of the radio base station to which the UE 2 is connected, the BM-SC 100 determines whether the content distribution method needs to be changed in the radio base station to which the UE 2 is connected after the UE 2 moves. (Step 3-11).

  The BM-SC 100 instructs the user UE 2 and the moved RAN 103 to change the distribution method when the distribution method needs to be changed in the radio base station connected after the movement (step 3-12). FIG. 6 shows an example in which the BM-SC 100 instructs the RAN 103 to change from the PtM method to the PtP method. If it is not necessary to change the distribution method, the process proceeds to step 3-16 described later.

  The RAN 103 after moving establishes a connection with the UE 2 in its own cell using FACH or DCH in accordance with an instruction from the BM-SC 100 (step 3-13). When the connection with each UE 2 is established, the content provided from the BM-SC 100 is distributed from the radio base station after movement to the UE 2. When the movement of the UE 2 is completed, the RAN 103 reports to that effect to the BM-SC 100 (step 3-14).

  BM-SC100 will notify the information of the wireless base station connected after movement of this UE2 to the server apparatus 104, if the completion | finish of change of the wireless base station of the connection destination of UE2 is notified from RAN103 (step 3-15).

  The server apparatus 104 adds the movement history of the radio base station information connected to each UE 2 to the database according to the report from the BM-SC 100 (step 3-16), returns to the process of step 3-9, and returns to step 3- Repeat the process up to 16. Steps 3-9 to 3-16 are continued until UE2 finishes receiving the content by MBMS.

  According to the present embodiment, since the server device selects the content distribution by the PtM method in the radio base station having the number of connections with the UE 2 larger than the threshold, radio resources can be used efficiently. In addition, in a radio base station in which the number of connections with UE2 is less than a threshold, if the content is distributed by a distribution method requested by the content provider or a distribution method desired by the user, the content provider or a user who uses MBMS Improved convenience.

Furthermore, if the content provider outputs information such as the region and time distributed by the PtM method from the server device 104 and the region and time distributed by the PtP method in units of content, for example, The user's preference for each region can be determined from the content having a large number of viewers. Therefore, content that matches the user's preference can be distributed for each region. In addition, if the content distribution time, the number of distributions, and the like are adjusted according to the user's preference for each region, the choice of viewing date and time by the user increases. Therefore, the content utilization rate by the user increases.
(Second Embodiment)
Next, an information distribution system according to a second embodiment will be described with reference to the drawings.

  The information distribution system according to the second embodiment has a configuration in which the server device 104 illustrated in FIG. 1 is provided in the RAN 103 illustrated in FIG. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  7 and 8 are flowcharts illustrating the processing procedure of the information distribution method according to the second embodiment.

  FIG. 7 shows the processing procedure of the BM-SC 100, the RAN 103, and the server device 104 when a database is constructed by the server device, as in the first embodiment. FIG. 8 shows a process in the case where cells that distribute the same content by the PtM method and the PtP method coexist, and the UE 2 moves from a cell that is distributed by the PtM method to a cell that is distributed by the PtP method. The procedure is shown. The processing procedure when the distribution method is selected by the server device is the same as that of the first embodiment shown in FIG.

  As shown in FIG. 7, when content distribution by MBMS is requested from the user's UE 2 (step 4-1), the BM-SC 100 notifies the RAN 103 of the content name to be distributed to the user's UE 2 (step 4). -2).

  The RAN 103 confirms the content name notified from the BM-SC 100 and the UE 2 that has requested distribution of the content in the cell (step 4-3), and establishes a connection with the UE 2 using the FACH (step 4- 4). When the connection with each UE 2 is established, the content provided from the BM-SC 100 is simultaneously distributed to a plurality of UEs 2 by FACH.

  The RAN 103 reports the IMSI, the radio base station information, the connection time information of the user who requested the content distribution, and the content name notified from the BM-SC 100 in step 4-2 to the server device 104 as distribution information ( Step 4-5).

  The server apparatus 104 accumulates the distribution information reported from the RAN 103 in the database (Step 4-6). The database provided in the server device 104 is as shown in Table 1 as in the first embodiment.

  When the content distribution is started, the RAN 103 determines whether or not there is a cell movement request for each user of the distributed content (step 4-7). And if the movement of UE2 is detected, the change of the wireless base station of the connection destination with this UE2 will be reported to the server apparatus 104 (step 4-8).

  The server apparatus 104 adds the movement history of the radio base station information connected to each UE 2 to the database according to the report from the RAN 103 (step 4-9), and returns to the process of step 4-7 until step 4-9. Repeat the process. The processing of step 4-7 to step 4-9 is continued until UE2 finishes receiving the content by MBMS.

  Similarly to the first embodiment, the server device 104 counts the number of connections of the UE 2 to the radio base station for each content, and the radio base station in which the number of connections exceeds a preset threshold value uses the PtM method. Instructs the BM-SC 100 to distribute the content. In addition, the radio base station whose number of connections with the UE 2 is equal to or less than the threshold value instructs the BM-SC 100 to allow distribution of the corresponding content in any of the PtM method and the PtP method.

  The BM-SC 100 distributes the content in the PtP method to each UE2 in the cell instructed to distribute by the PtP method according to the instruction from the server device 104, and the UE2 in the cell instructed to distribute in the PtM method. Deliver content using the PtM method.

  As shown in FIG. 8, when a cell that can be distributed by the PtP method and a cell that can be distributed by the PtM method coexist, when content distribution by MBMS is requested from the user's UE 2 (step 5-1), the BM-SC 100 Notifies the RAN 103 of the content name to be distributed to the user's UE 2 (step 5-2).

  The RAN 103 confirms the content name notified from the BM-SC 100 and the UE 2 that requested the distribution of the content in the cell, and can the content be delivered to the user UE 2 by the PtM method by inquiring to the server device 104 It is determined whether or not (step 5-3).

  The RAN 103 establishes a connection with the UE 2 using the FACH when distributing by the PtM method and distributes the content (step 5-4), and connects with the UE 2 using the DCH when distributing by the PtP method. Is established and the content is distributed (step 5-5).

  The RAN 103 reports the IMSI, the wireless base station information, the connection time information of the user who requested the content distribution, and the content name notified from the BM-SC 100 in Step 5-2 to the server device 104 as distribution information ( Step 5-6). The server apparatus 104 accumulates the distribution information reported from the RAN 103 in the database (Step 5-7).

  When the content distribution is started, the RAN 103 determines whether or not there is a cell movement request for each user of the distributed content (step 5-8). Then, when the movement of the user's UE2 is detected, the RAN 103 including the radio base station connected after the movement determines whether or not the distribution method needs to be changed (step 5-9).

  When the delivery method needs to be changed, the RAN 103 notifies the user's UE 2 of the change of the delivery method and switches the channel (FACH or DCH) used for content delivery to the UE 2 (step 5-10). If it is not necessary to change the delivery method, the process proceeds to step 5-12 described later.

  The RAN 103 notifies the server apparatus 104 of information on the radio base station to be connected after the movement (step 5-11).

  The server apparatus 104 adds the movement history of the radio base station information connected to each UE 2 to the database according to the report from the RAN 103 (step 5-12), returns to the process of step 5-8, and goes to step 5-12 Repeat the process. Steps 5-8 to 5-12 are continued until UE2 finishes receiving the content by MBMS.

  Even in the configuration in which the server apparatus 104 is provided in the RAN 103 as in the present embodiment, the same effect as that of the information distribution system in the first embodiment can be obtained.

It is a block diagram which shows one structural example of the information delivery system of this invention. FIG. 2 is a block diagram illustrating a specific configuration example of the mobile communication system illustrated in FIG. 1. It is a block diagram which shows the example of 1 structure of the server apparatus shown in FIG. It is a flowchart which shows the process sequence of the information delivery method of 1st Embodiment. It is a flowchart which shows the process sequence of the information delivery method of 1st Embodiment. It is a flowchart which shows the process sequence of the information delivery method of 1st Embodiment. It is a flowchart which shows the process sequence of the information delivery method of 2nd Embodiment. It is a flowchart which shows the process sequence of the information delivery method of 2nd Embodiment.

Explanation of symbols

1 Mobile communication system 2 UE
10 processor 11 CPU
12 Main storage device 13 Recording medium 14 Data storage device 15 Memory control interface unit 16 I / O interface unit 17 Communication control device 18 Bus 20 Input device 30 Output device 100 BM-SC
101 GGSN
102 SGSN
103 RAN
104 Server device

Claims (12)

A mobile communication system capable of distributing individual data to a wireless terminal and simultaneously distributing the same data to a plurality of wireless terminals by a multicast multimedia broadcasting service;
Distribution information, which is reported from the mobile communication system and associates a wireless terminal requesting distribution of the data with a wireless base station to which the wireless terminal is connected, is stored as a database, and the wireless terminal is based on the database. A server device that selects whether to distribute the data in a point-to-multipoint manner or to distribute the data in a point-to-point manner, and notifies the mobile communication system of the selection result;
An information distribution system. The server device
The number of connections of wireless terminals that request distribution of the data to the wireless base station is counted for each data, and the point-to-multipoint method is used in a wireless base station in which the number of connections with the wireless terminals is greater than a preset threshold value. The mobile communication system is instructed to distribute the data by using the point-to-multipoint method or the point-to-point method in a wireless base station in which the number of connections with the wireless terminal is equal to or less than the threshold. 1. The information distribution system according to 1.   In the distribution information, information for identifying a wireless terminal to which the data is distributed, information for identifying a wireless base station to which the wireless terminal is connected, and a connection indicating a distribution time of the data to the wireless terminal The information distribution system according to claim 1 or 2, comprising time information and a name of the data. The server device
Based on the distribution information stored in the database, the region and time when the data is distributed in the point-to-multipoint method, and the region and time information where the data is distributed in the point-to-point method are output. The information delivery system according to any one of claims 1 to 3. Reported from a mobile communication system capable of distributing individual data to a wireless terminal and simultaneously distributing the same data to a plurality of wireless terminals by a multicast multimedia broadcast service, and the wireless terminal requesting the data distribution and the wireless terminal Store the distribution information associating with the radio base station connected to the data storage device as a database,
Information distribution method for selecting whether to distribute the data in a point-to-multipoint manner to the wireless terminal based on the database or notifying the selection result to the mobile communication system . Count the number of connections of wireless terminals that request distribution of the data to the wireless base station for each data,
The wireless base station having the number of connections with the wireless terminal larger than a preset threshold distributes the data by the point-to-multipoint method, and the wireless base station with the number of connections with the wireless terminal equal to or less than the threshold is the point pair. 6. The information distribution method according to claim 5, wherein the mobile communication system is instructed to distribute the data in a multi-system or the point-to-point system.   In the distribution information, information for identifying a wireless terminal to which the data is distributed, information for identifying a wireless base station to which the wireless terminal is connected, and a connection indicating a distribution time of the data to the wireless terminal The information distribution method according to claim 5 or 6, including time information and a name of the data.   Based on the distribution information stored in the database, the region and time when the data is distributed in the point-to-multipoint method, and the region and time information where the data is distributed in the point-to-point method are output. The information delivery method according to any one of claims 5 to 7. A server device connected to a mobile communication system capable of distributing individual data to a wireless terminal and simultaneously distributing the same data to a plurality of wireless terminals by a multicast multimedia broadcasting service,
A data storage device that stores, as a database, distribution information that is reported from a mobile communication system and associates a wireless terminal that requests distribution of the data with a wireless base station to which the wireless terminal is connected;
A processing device for selecting whether to distribute the data in a point-to-multipoint manner or to deliver the data to the wireless terminal based on the database, and notifying the selection result to the mobile communication system; ,
A server device. The processor is
Count the number of connections of wireless terminals that request distribution of the data to the wireless base station for each data,
The wireless base station having the number of connections with the wireless terminal larger than a preset threshold distributes the data by the point-to-multipoint method, and the wireless base station with the number of connections with the wireless terminal equal to or less than the threshold is the point pair. The server apparatus according to claim 9, wherein the mobile communication system is instructed to distribute the data by a multi-method or the point-to-point method.   In the distribution information, information for identifying a wireless terminal to which the data is distributed, information for identifying a wireless base station to which the wireless terminal is connected, and a connection indicating a distribution time of the data to the wireless terminal The server device according to claim 9 or 10, comprising time information and a name of the data. The processor is
Based on the distribution information stored in the database, the region and time when the data is distributed in the point-to-multipoint method, and the region and time information where the data is distributed in the point-to-point method are output. The server device according to any one of claims 9 to 11.

Images