JP2012114673A - Position information notification system and spot notice exclusive base station exclusive for transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position information notification system capable of providing more accurate information with respect to a position, and a spot notice exclusive base station exclusive for transmission.SOLUTION: The position information notification system regarding this invention includes: a portable terminal 2; a portable terminal base station 3 which performs communication with the portable terminal 2 and is connected to other communication terminals through a public communication network 4; a spot notice exclusive base station 6 which transmits cell identification information for identifying itself to the portable terminal 2 inside its own radio area 60; and a database 51 which stores provision information related to a location where the spot notice exclusive base station 6 corresponding to the cell identification information is provided in association with the cell identification information. When the cell identification information is detected, the portable terminal 2 acquires the provision information associated with the cell identification information from the database 51. The spot notice exclusive base station 6 has the radio area 60 narrower than a radio area 30 of the portable terminal base station 3, is not connected to the public communication network 4, and is exclusive for transmission.

Description

  The present invention relates to a position information notification system and a transmission dedicated spot notification base station.

  A technique for providing information on facilities and the like based on position information of portable terminals has been developed.

  An example of a technique for acquiring the position information of the mobile terminal will be described with reference to FIG. FIG. 8 is a diagram illustrating an example of the overall configuration of a position information notification system that processes the wireless area of the mobile terminal base station as a spot of the mobile terminal as the position of the mobile terminal. In FIG. 8, a user 101 uses a mobile terminal 102. The base station of the mobile terminal 102 is a mobile terminal base station 103, and the mobile terminal base station 103 has a wireless area 104. The mobile terminal base station 103 can be connected to the service network 110 via the core network 105. The service network 110 includes a database 111 that stores location information associated with cell identification information (hereinafter referred to as cell ID) indicating the wireless area 104.

  The mobile terminal 102 receives the cell ID indicating the wireless area 104 transmitted from the mobile terminal base station 103. The portable terminal 102 connects to the service network 110 via the portable terminal base station 103 and the core network 105. The service network 110 refers to the database 111, acquires location information related to the cell ID, and outputs it to the mobile terminal 102. As described above, the mobile terminal 102 acquires location information related to the cell ID. In addition, the mobile terminal 102 can acquire information on the building 200 in the wireless area 104 as information related to the position information.

  However, the wireless area 104 of the mobile terminal base station 103 is often a wide area. Therefore, in the position information notification system shown in FIG. 8, it is difficult to provide the portable terminal 102 with accurate position information or facility or store information related to the position information.

  From the above, a technique has been developed for more accurately determining the position of the mobile terminal using information other than the position information of the base station and providing highly accurate position information. For example, Patent Document 1 discloses a technique in which a mobile terminal having a GPS (Global Positioning System) function can acquire more accurate position information by communicating with a base station provided in a car or the like. .

  As related technology of other mobile terminals, in Patent Document 2, a dedicated cell is provided by a directional antenna in a cell provided in a radio base station, and the mobile terminal in the dedicated cell performs transmission and reception with the directional antenna. A technique for allocating a wireless channel to the mobile terminal is disclosed. In Patent Document 3, a location registration radio base station is provided separately from the communication radio base station of the mobile terminal, and the mobile terminal can communicate with the location registration radio base station so that the mobile terminal can make a call in a short time. A technique capable of searching for a wireless base station is disclosed.

JP 2010-085256 A JP 2005-318359 A JP 09-247740 A

  However, even with the technology using the GPS system as in Patent Document 1, when the mobile terminal is in a building, the position of the mobile terminal may not be detected accurately. FIG. 9 is a diagram illustrating an example of the overall configuration of a position information notification system using GPS. FIG. 9 shows a state where the user 101 who has the mobile terminal 102 is on the Nth floor 201 of the building 200. The portable terminal 102 includes a GPS receiver that functions to acquire radio waves from the GPS satellite 301. In this case, the mobile terminal 102 in the building 200 cannot acquire the radio wave from the GPS satellite 301, and the mobile terminal 102 receives the location information based on the cell ID indicating the wireless area 104 of the mobile terminal base station 103 as described above. It is possible that there is a situation that must be acquired.

  As an example for solving the above problem, there is a GPS system using a mechanism in which an GPS signal received by an outdoor GPS antenna in an underground shopping area is retransmitted to a portable terminal using a small antenna installed on the ceiling of the underground shopping mall. However, in that case, there remains a problem that the position information acquired by the mobile terminal cannot be distinguished from the height (ground and underground shopping street). For this reason, the information provided by the mobile terminal such as a facility or a store may be inappropriate information such as information on a floor different from the floor where the user of the mobile terminal is located.

  The present invention has been made to solve such problems, and provides a position information notification system and a transmission-only spot notification dedicated base station that can provide more accurate information regarding the position. Objective.

  The position information notification system according to the present invention includes a mobile terminal, a mobile terminal base station that communicates with the mobile terminal and connects to another communication terminal via a public communication network, and the mobile terminal in its own wireless area. Provided information related to the place where the spot notification dedicated base station for transmitting the cell identification information for identifying itself and the spot notification dedicated base station corresponding to the cell identification information associated with the cell identification information is provided. When the mobile terminal detects the cell identification information, the mobile terminal acquires the provision information associated with the cell identification information from the database via the mobile terminal base station, and the spot notification The dedicated base station has a radio area narrower than the radio area of the mobile terminal base station, is not connected to the public communication network, and is dedicated to transmission.

  The dedicated spot notification base station for transmission according to the present invention transmits cell identification information for identifying itself to a mobile terminal in its own wireless area, communicates with the mobile terminal, and others via a public communication network The wireless terminal has a wireless area narrower than the wireless area of the mobile terminal base station connected to the communication terminal, and is not connected to the public communication network.

  According to the present invention, it is possible to provide a position information notification system and a transmission dedicated spot notification base station that can provide more accurate information regarding the position.

It is a figure which shows the example of whole structure of the positional infomation notification system concerning Embodiment 1. FIG. 1 is a block diagram illustrating a configuration example of a mobile terminal according to a first embodiment; It is a block diagram which shows the structural example of the base station only for spot notification concerning Embodiment 1. FIG. 4 is a flowchart of processing performed by a baseband processing unit of the spot notification dedicated base station according to the first exemplary embodiment; 3 is a flowchart of processing performed by a higher-order application processing unit of the mobile terminal according to the first exemplary embodiment; 4 is a flowchart of processing performed by the service network according to the first exemplary embodiment. It is a figure which shows the example of whole structure of the positional infomation notification system concerning Embodiment 2. FIG. It is a figure which shows the example of whole structure of the positional infomation notification system which determines the radio | wireless area of a portable terminal base station as a spot of a portable terminal. It is a figure which shows the example of whole structure of the positional infomation notification system using GPS.

Embodiment 1
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating an example of the overall configuration of the position information notification system according to the present embodiment. In FIG. 1, a user 1 is located on the ground such as a street and uses a portable terminal 2. The base station of the mobile terminal 2 is the mobile terminal base station 3, and the mobile terminal base station 3 has a radio area 30. The mobile terminal base station 3 can be connected to the service network 5 via the core network 4. The service network 5 includes a database 51 that stores information. The configuration of the positional information notification system according to the first embodiment is the same as the overall configuration example of the positional information notification system shown in FIG.

  The position information notification system of FIG. 1 is different from the position information notification system of FIG. 8 in that the spot notification dedicated base station 6 is arranged in the wireless area 30 of the mobile terminal base station. The spot notification dedicated base station 6 is disposed on the top of the utility pole 7 and has a radio area 60. The spot notification dedicated base station 6 transmits broadcast information including cell identification information (hereinafter referred to as cell ID) for identifying itself to the mobile terminal in the wireless area 60. A facility 8 is provided in the wireless area 60. The above is the overall configuration example of the position information notification system according to the present exemplary embodiment.

  The mobile terminal 2 is a mobile terminal such as a mobile phone, a PHS (Personal Handy-phone System), a mobile information terminal, or a smartphone. The mobile terminal 2 can acquire information by connecting to the service network 5 via the mobile terminal base station 3 and the core network 4. Further, the portable terminal 2 can receive the radio from the spot notification dedicated base station 6 and detect the cell ID for identifying the spot notification dedicated base station 6 from the broadcast information.

  The structure of the portable terminal 2 is shown using FIG. The mobile terminal 2 includes an upper application processing unit 21, a lower layer processing unit 22, and a wireless transmission / reception module unit 23. The wireless transmission / reception module unit 23 is a module unit that the mobile terminal 2 performs wireless transmission / reception, and includes an antenna and the like. In addition, the portable terminal 2 includes an operation unit, a display unit such as a display, a power supply unit (not shown), and the like.

  The process of each part of the portable terminal 2 regarding transmission / reception will be described. The upper application processing unit 21 can access the lower layer processing unit 22 and detect the cell ID from the broadcast information from the spot notification dedicated base station 6. Further, the upper application processing unit 21 can access the lower layer processing unit 22 and perform wireless transmission to the mobile terminal base station 3 by the wireless transmission / reception module unit 23. In addition, the upper application processing unit 21 performs processing related to the application of the mobile terminal 2.

  The lower layer processing unit 22 acquires the wireless information from the spot notification dedicated base station 6 received by the wireless transmission / reception module unit 23 and outputs the wireless information to the upper application processing unit 21. In addition, the mobile terminal 2 has a function as a lower layer.

  When receiving the radio from the mobile terminal base station 3 or the spot notification dedicated base station 6, the radio transmission / reception module unit 23 outputs the notification information to the lower layer processing unit 22. In addition, the wireless transmission / reception module unit 23 performs wireless transmission to the mobile terminal base station 3 based on a command from the upper application processing unit 21.

  The mobile terminal base station 3 is a base station that communicates with the mobile terminal 2 and can be connected to other communication terminals via the core network 4. The mobile terminal base station 3 is connected to the service network 5 via the core network 4. That is, the user 1 can receive services such as voice communication and data communication by the mobile terminal 2 communicating with the mobile terminal base station 3.

  The core network 4 is a network connected to the service network 5, and here is a public communication network.

  The service network 5 is a network provided with a database 51. The database 51 stores provision information associated with the cell ID transmitted by the spot notification dedicated base station 6. This provided information is information related to the place where the spot notification dedicated base station 6 corresponding to the cell ID is provided. Specific examples of the provided information include position information around the spot notification dedicated base station 6, information about surrounding facilities or stores, event information around the spot notification dedicated base station 6, and other spots notification dedicated base station 6 surroundings. Information of related areas (information around the spot notification dedicated base station adjacent to the spot notification dedicated base station 6, information about branches around the spot notification dedicated base station 6, facilities, stores, etc.).

  The spot notification dedicated base station 6 transmits broadcast information including a cell ID that identifies itself as another spot notification dedicated base station to the mobile terminal 2 in the wireless area 60. This cell ID has the property that the number varies depending on the spot notification dedicated base station. The spot notification dedicated base station 6 is not connected to the core network 4 and is a transmission dedicated base station. That is, the spot notification dedicated base station 6 does not perform communication related to user traffic.

  Further, the spot notification dedicated base station wireless area 60 is an area narrower than the mobile terminal base station wireless area 30. The area covered by the wireless area 60 is a wireless area of the mobile terminal base station 3 such as a floor of a commercial facility or a part thereof, a theme park, an event venue, the whole or a section of an amusement park, a section of a main street or a shopping street, etc. An area narrower than 30 is considered as an example.

  A specific configuration of the spot notification dedicated base station 6 will be described with reference to FIG. The spot notification dedicated base station 6 includes a notification information storage memory unit 61, a baseband processing unit 62, an amplifier unit 63, and an antenna unit 64. The spot notification dedicated base station 6 includes a power supply unit (not shown) and the like.

  In the notification information storage memory unit 61, notification information including a cell ID is stored in advance. The baseband processing unit 62 controls the notification information storage memory unit 61 and the amplifier unit 63. The baseband processing unit 62 takes out broadcast information including the cell ID from the broadcast information storage memory unit 61 as a signal, modulates the signal, and outputs the modulated signal to the amplifier unit 63. The amplifier unit 63 amplifies the signal and outputs it to the antenna unit 64. The antenna unit 64 converts the output signal into a radio wave and transmits notification information in the wireless area 60.

  In the present embodiment, the radio frequency band output from the mobile terminal base station 3 and the radio frequency band output from the spot notification dedicated base station 6 are the same, and multiplex communication is performed in the position information notification system. ing. For example, the baseband processing unit 62 of the spot notification dedicated base station 6 modulates the broadcast information signal using a different scrambling code for each spot notification dedicated base station, and transmits it wirelessly. The portable terminal 2 recognizes the scrambling code in the received information, thereby identifying the wireless information output from the portable terminal base station 3 and the wireless information output from the spot notification dedicated base station 6.

  Hereinafter, the process in which the spot notification dedicated base station 6 transmits the notification information wirelessly, the portable terminal 2 recognizes the notification information and detects the cell ID, and then connects to the database 51 to acquire the provided information will be described in detail. To do.

  First, the process in which the spot notification dedicated base station 6 transmits broadcast information wirelessly will be described with reference to FIG. FIG. 4 is a flowchart of processing performed by the baseband processing unit 62 of the spot notification dedicated base station 6.

  First, the baseband processing unit 62 performs base station activation processing for activating the spot notification dedicated base station 6 (step S1). Next, the baseband processing unit 62 accesses the broadcast information storage memory unit 61 and reads broadcast information including the cell ID (step S2). Thereafter, the baseband processing unit 62 performs the above-described modulation processing, and then outputs broadcast information to the amplifier unit 63 (step S3). Thereafter, the baseband processing unit 62 continues the process of step S3.

  The output broadcast information is transmitted as a radio signal to the radio area 60 of the spot notification dedicated base station 6 via the amplifier unit 63 and the antenna unit 64. The processing that the amplifier unit 63 and the antenna unit 64 perform when transmitting the broadcast information signal is as described above. As described above, the spot notification dedicated base station 6 transmits the broadcast information wirelessly.

  Next, a process in which the mobile terminal 2 recognizes the notification information and acquires information associated with the cell ID from the service network 5 will be described with reference to FIGS. FIG. 5 is a flowchart of processing performed by the higher-level application processing unit 21 of the mobile terminal 2. FIG. 6 is a flowchart of processing performed by the service network 5.

  In FIG. 6, the upper application processing unit 21 of the mobile terminal 2 accesses the lower layer processing unit 22 and acquires broadcast information of the spot notification dedicated base station in the area where the mobile terminal 2 is located (step S <b> 11). At this time, the processing performed by the lower layer processing unit 22 and the wireless transmission / reception module unit 23 is as described above.

  The upper application processing unit 21 can detect the cell ID from the acquired notification information. After step S11, the higher-order application processing unit 21 checks whether or not there is a cell ID of the newly detected spot notification dedicated base station (step S12). When there is no cell ID of the spot detection dedicated base station that is newly detected (NO in step S12), the higher-order application processing unit 21 returns to step S11 and performs processing.

  When the mobile terminal 2 newly enters the wireless area 60 of the spot notification dedicated base station 6 shown in FIG. 1 (YES in step S12), the higher-order application processing unit 21 determines the cell ID of the new spot notification dedicated base station 6 Is detected. The upper application processing unit 21 notifies the service network 5 of the cell ID information (step S13). Specifically, the upper application processing unit 21 controls the lower layer processing unit 22 to connect to the service network 5 via the mobile terminal base station 3 by the wireless transmission / reception module unit 23. As a result, the host application processing unit 21 notifies the service network 5 of the cell ID information through communication of user traffic via the mobile terminal base station 3 and makes an inquiry.

  Next, processing performed by the service network 5 at the time of step S13 in FIG. 6 will be described with reference to FIG. First, the service network 5 checks whether there is a cell ID inquiry from the mobile terminal 2 (step S21). When there is no inquiry (NO in step S21), the service network 5 performs the process of step S21 again.

  When there is an inquiry (YES in step S21), the service network 5 acquires the cell ID output from the mobile terminal 2, and extracts the provision information associated with the cell ID from the database 51 based on the cell ID. (Step S22). As described above, the provision information is information such as the position of the wireless area 60, the facility or the store in the wireless area 60, and is stored in the database 51 in association with the corresponding cell ID. The service network 5 transmits the provided information extracted from the database 51 to the mobile terminal 2 via the mobile terminal base station 3 (step S23). After step S23, the service network 5 returns to the process of step S21.

  Returning to FIG. 6, the process performed by the upper application processing unit 21 of the mobile terminal 2 will be described again. After step S13, the upper application processing unit 21 determines whether a response from the service network 5 has been detected (step S14). When the response from the service network 5 is not detected (NO in step S14), the upper application processing unit 21 performs the process in step S14 again.

  When the upper application processing unit 21 detects a response from the service network 5 (YES in step S14), the upper application processing unit 21 processes this response (step S15). Specific examples of the response processing include the upper application processing unit 21 updating the location information of the portable terminal 2 and displaying the information of the facility or the store in the wireless area 60 to the user 1 for notification. It is to be. After step S15, the upper application processing unit 21 returns to step S11 to perform processing.

  From the above, the user 1 of the mobile terminal 2 can know the provision information related to the location of the wireless area 60 (the vicinity of the spot notification dedicated base station 6) where he / she is. Since the wireless area 60 is narrower than the wireless area 30 of the mobile terminal base station 3, the position information notification system according to the present embodiment can provide more accurate information regarding the position. For example, the user 1 can acquire more accurate position information, or can acquire more accurate information of a facility or a store in the vicinity.

Embodiment 2
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a diagram illustrating an overall configuration example of the position information notification system according to the present embodiment. FIG. 7 shows a case where the spot notification dedicated base station is installed on each floor of the multi-story facility 8 and the user 1 of the portable terminal 2 is located in the facility 8.

  The user 1 of the portable terminal 2 is located on the Nth floor 81 of the multi-story facility 8, and the spot notification dedicated base station 6 is provided on the Nth floor 81. The facility 8 has a structure in which the upper part is partitioned by a ceiling and the lower part is partitioned by a floor, and only the Nth floor 81 is the radio area 60 of the base station 6 dedicated to spot notification. The N floor is an arbitrary ground floor of the facility 8, but may be an underground floor of the facility 8. Similarly, the wireless areas of the spot notification dedicated base stations provided on the other floors cover the entire floors of the other floors as well. In other words, the plurality of spot notification dedicated base stations have radio areas in different ranges that do not overlap in the facility 8.

  In the database 51 of the service network 5, as information associated with the cell ID of the spot announcement dedicated base station 6, only information on the facility or store located on the Nth floor 81 is associated with the cell ID of the spot announcement dedicated base station 6. It is remembered.

  In addition, the description of each element of the position information notification system shown in FIG. 7 is the same as the description of FIG.

  In FIG. 7, the spot notification dedicated base station 6 outputs broadcast information to the radio area 60 in the same manner as the processing of FIG. 4. That is, the range in which the portable terminal can acquire the notification information of the spot notification dedicated base station 6 is only the Nth floor 81. The portable terminal 2 acquires the notification information, extracts the cell ID, and acquires the provision information from the database 51 based on the cell ID in the same manner as the process of FIG. The service network 5 also transmits information related to the cell ID output by the mobile terminal 2 to the mobile terminal 2 in the same manner as the processing of FIG.

  As described above, according to the position information notification system according to the present embodiment, the user 1 of the portable terminal 2 is located inside the multi-story building and the cell of the portable terminal base station 3 can be obtained even when the position information cannot be obtained by GPS. Provided information that is more accurate than provided information obtained using an ID can be acquired. Moreover, the information acquired by the user can be appropriately provided after accurately taking into account the information of the upper and lower layers where the user is located. That is, the facility or store in the information acquired by the user is not information on a facility or store on a different floor but information on a facility or store on the same floor. In other words, the user can obtain provided information that takes into account the height of the position.

  As described above, the user was able to know the information related to the position of the mobile terminal according to the position of the wireless area of the mobile terminal base station, but when the base station wireless area is wide, the information related to the acquired position is accurate. There was a possibility that was not good. In addition, in a portable terminal having a communication function with GPS, the position of the portable terminal cannot be grasped in a place where radio waves from a GPS satellite such as a building or an underground shopping street do not reach. There is an example of a method of retransmitting a GPS signal received by an outdoor GPS antenna to an underground shopping mall in an underground shopping mall, but there remains a problem that the acquired location information cannot distinguish between the ground and the underground shopping mall.

  In the position information notification system according to the first and second embodiments of the present invention, the position information of a specific spot (the wireless area of the spot notification dedicated base station) that is narrower than the wireless area of the mobile terminal base station, the surrounding facilities, stores, etc. The user of the mobile terminal can grasp the information more accurately. In addition, even when a user is located inside a building where radio waves from GPS satellites do not reach, the position information notification system according to the present invention provides information relating to a three-dimensional position in consideration of the upper and lower layers that are positioned. Can be provided accurately and appropriately. That is, the position information notification system according to the present invention has a feature that it can contribute to the position capture or the improvement of the navigation function in the portable terminal. From the above, it is possible to provide a position information notification system and a transmission dedicated spot notification base station that can provide more accurate information regarding the position.

  In addition, the spot notification dedicated base station in the embodiment of the present invention only transmits broadcast information including a cell ID to a small area, and does not perform voice or data communication with the mobile terminal and the core network. Therefore, in the spot notification dedicated base station, a relatively low value is sufficient for the maximum transmission power of the amplifier unit, the baseband processing unit is not required to have high processing performance, and the line processing function with the core network is not required. . Therefore, the spot notification dedicated base station can be developed in a small size and at a low cost, and has characteristics suitable for finely deploying in each narrow area. Further, since the spot notification dedicated base station has low power consumption, it can be battery-powered (for example, a button-type battery). In this case, the spot notification dedicated base station can be provided in a place where an external power source cannot be secured. Furthermore, since the spot notification dedicated base station is small, it can be installed relatively easily.

  From the above, it can be said that the spot notification dedicated base station is suitable for finely deploying each narrow area as compared with a base station such as a femtocell that can communicate with a mobile terminal and has a very small wireless area.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, in the position information notification system according to the first or second embodiment, the radio output from the mobile terminal base station 3 and the radio output from the spot notification dedicated base station 6 have the same frequency band. Such a configuration may be used.

  In the position information notification system according to the second exemplary embodiment, it is assumed that a radio area of the spot notification dedicated base station is provided for each floor of the facility 8. However, depending on the shape of the facility 8, there may be a case where one floor has a large area. In that case, by providing a plurality of spot notification dedicated base stations for different ranges of one floor of the facility 8, the user may be able to acquire position information of different portions of one floor.

  As described above, when a plurality of spot notification dedicated base stations are provided on the same floor, radios from a plurality of spot notification dedicated base stations may be simultaneously transmitted to the mobile terminal. Even when the spot notification dedicated base stations are provided on different floors, depending on the shape of the building, it is assumed that radio waves from a plurality of spot notification dedicated base stations are simultaneously transmitted to the mobile terminal. For example, there is a case where there is an atrium in a building. The same situation is also assumed when a plurality of spot notification base stations are provided on an outdoor street or the like. In this way, a situation is assumed in which a plurality of spot notification dedicated base stations each having different radio areas have overlapping radio areas.

  As described above, when receiving the radio acquired from the plurality of spot notification dedicated base stations, the mobile terminal may acquire the provided information as follows. First, the mobile terminal determines a radio having the strongest radio wave intensity among radios acquired from a plurality of spot notification dedicated base stations. The mobile terminal detects the cell ID from the radio having the determined strongest radio field intensity as described above, and acquires the provision information based on the cell ID. Thereby, the portable terminal can detect the cell ID of the spot notification dedicated base station in a relatively close position among the plurality of spot notification dedicated base stations.

  In addition, the technology related to the configuration of the communication network and the cell ID in the embodiment of the present invention has been described based on a method represented by LTE (Long Term Evolution). However, the location information notification system shown in the present invention includes GSM (Global System for Mobile Communications), 3rd generation mobile communication system, HSPA (High Speed Packet Access), wireless LAN (Local Area Network), WiMAX (WideMax). The present invention is also applicable when a communication network is configured based on other standards such as Microwave Access).

1 User 2 Mobile terminal 3 Mobile terminal base station 4 Core network 5 Service network 6 Spot notification dedicated base station 7 Utility pole 8 Facility 21 Upper application processing unit 22 Lower layer processing unit 23 Wireless transmission / reception module unit 30 Wireless area 51 Database 60 Wireless area 61 Notification Information Storage Memory Unit 62 Baseband Processing Unit 63 Amplifier Unit 64 Antenna Unit 81 Facility N Floor

Claims (4)

A mobile device,
A mobile terminal base station that communicates with the mobile terminal and connects to other communication terminals via a public communication network;
A spot notification dedicated base station that transmits cell identification information for identifying itself to the mobile terminal in its wireless area;
A database that stores provision information related to a place where the spot notification dedicated base station corresponding to the cell identification information is associated with the cell identification information;
With
When the mobile terminal detects the cell identification information, the mobile terminal acquires the provision information associated with the cell identification information from the database via the mobile terminal base station,
The spot notification dedicated base station has a wireless area that is narrower than the wireless area of the mobile terminal base station, and is not connected to the public communication network and dedicated to transmission.
Location information notification system. The location information notification system includes a first spot notification dedicated base station and a second spot notification dedicated base station,
The first spot notification dedicated base station and the second spot notification dedicated base station are installed on different floors in the same building,
The position information notification system according to claim 1. Cell identification information that identifies itself to mobile terminals within its own wireless area,
A wireless area narrower than a wireless area of a mobile terminal base station that communicates with the mobile terminal and connects to another communication terminal via a public communication network
A dedicated spot announcement base station for transmission that is not connected to the public communication network. The wireless area of the spot notification dedicated base station has a range that does not overlap with the wireless areas of other spot notification dedicated base stations installed on different floors of the same building,
The spot notification dedicated base station according to claim 3.

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