JP2010166357A - Mobile communication device and data generation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile communication device capable of reducing the storage capacity of data, and to provide a data generation method. <P>SOLUTION: The mobile communication device 10 includes an information table 16 in which regional information is associated with broadcast station information receivable in a region corresponding thereto. The mobile communication device 10 further includes: a position information acquisition part 12 which acquires position information showing a current position of the mobile communication device from a mobile communication system; and a regional information acquisition part 14 which acquires regional information contained in information received in the current position from a broadcast system. An information table update part 15 stores, based on the regional information acquired by the regional information acquisition part 14, the position information acquired by the position information acquisition part 12 in the information table 16 in association with the corresponding regional information and receivable broadcast station information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mobile communication device and a data generation method, and more particularly to a communication device and a data generation method used for digital broadcasting.

  In recent years, terrestrial digital broadcasting has spread rapidly, and various technologies that make use of the characteristics of terrestrial digital broadcasting have been released. Here, in the terrestrial digital broadcasting, it is necessary to set a different frequency of the broadcasting station for each area to receive. When a mobile communication device having a terrestrial digital broadcast receiving function moves across a broadcasting region, the mobile communication device needs to set a broadcasting station capable of receiving in the corresponding broadcasting region. In Patent Document 1, when a TV broadcast area is changed, the broadcast station information is set by downloading the broadcast station information from a server that stores receivable broadcast station information for each broadcast area. Technology is disclosed.

JP 2005-175556 A

  In the method described in Patent Document 1, the mobile communication device stores the information from the database that manages the base station information with which the mobile communication device is communicating, the TV broadcast reception area, the TV broadcast frequency, and the like in association with each other. I am going to download it. For this reason, when managing a large number of base station information in the database, it is necessary to manage information such as the TV broadcast reception area and TV broadcast frequency corresponding to each base station, which increases the amount of information to be managed. was there. When managing a small number of base station information in the database, it is necessary to prepare a large number of databases, and there is a problem that the server cost for storing the databases increases.

  An object of the present invention is to solve such problems, and an object of the present invention is to provide a mobile communication apparatus and a data generation method capable of reducing the data storage capacity.

  A mobile communication device according to the present invention includes an information table that associates regional information with broadcast station information that can be received in the region, and a location information acquisition unit that acquires location information indicating the current location of the mobile communication device from the mobile communication system. And an area information acquisition unit that acquires area information included in the information received at the current position from the broadcasting system, and the position information acquired by the position information acquisition unit based on the area information acquired by the area information acquisition unit And an information table updating unit for storing in the information table in association with the corresponding regional information and receivable broadcast station information.

  The data generation method according to the present invention acquires position information indicating a current position of a mobile communication device from a mobile communication system, acquires area information included in information received at the current position from a broadcast system, and receives the position information. Is stored in the information table in association with the corresponding regional information and receivable broadcast station information based on the regional information.

  According to the present invention, it is possible to provide a mobile communication device and a data generation method capable of reducing the data storage capacity.

1 is a diagram showing a configuration of a communication device according to a first exemplary embodiment. 1 is a diagram illustrating a configuration of an entire network including a communication device according to a first embodiment. FIG. 3 is a diagram illustrating a processing flow of the communication apparatus according to the first embodiment. FIG. 10 is a diagram illustrating a processing flow of the communication apparatus according to the second embodiment. FIG. 10 is a diagram illustrating a processing flow of the communication apparatus according to the third embodiment. 4 is a diagram of an information table held by the communication apparatus according to the first embodiment. FIG. 4 is a diagram of an information table held by the communication apparatus according to the first embodiment. FIG. FIG. 10 is a diagram of an information table held by the communication device according to the third embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. For clarity of explanation, the following description and drawings are omitted and simplified as appropriate. Each element described in the drawings as a functional block for performing various processes can be configured by a CPU, a memory, and other circuits in terms of hardware, and a program loaded in the memory in terms of software. Etc. Therefore, it is understood by those skilled in the art that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof, and is not limited to any one.

(Embodiment 1)
FIG. 1 is a diagram illustrating a configuration of a mobile communication device according to a first embodiment of the present invention. The mobile communication device 10 includes a mobile communication system communication unit 11, a position information acquisition unit 12, a broadcast system communication unit 13, a regional information acquisition unit 14, an information table update unit 15, and an information table 16.

  The mobile communication system communication unit 11 receives physical channel information, application information, and the like on a radio signal by communicating with a communication device of the mobile communication system. The position information acquisition unit 12 acquires position information regarding the current position from the information received by the mobile communication system communication unit 11. The position information is base station information for identifying a base station used in a mobile communication system, for example, and in communication with the mobile communication device 10. Further, the location information may be information for identifying an access point device in communication with the mobile communication device 10 in wireless LAN (Local Area Network) communication.

  The broadcast system communication unit 13 receives information included in a broadcast wave by communicating with a communication device of a terrestrial digital broadcast system. The area information acquisition unit 14 acquires area information from the information received by the broadcast system communication unit 14. The regional information represents information on broadcasting areas such as the Tokyo region and the Hokkaido region.

  When the information table update unit 15 receives a signal including position information from the position information acquisition unit 12, the information table update unit 15 checks whether or not a record corresponding to the acquired position information exists in the information table 16. When the record does not exist, the information table update unit 15 receives the position information acquired by the position information acquisition unit 12, the region information acquired by the region information acquisition unit 14, and the region associated with the region information. A record in which possible broadcast station information is associated is generated, and the information table 16 is updated.

  By providing the above configuration, it is possible to manage the information table related to the base station required by the mobile communication device, so that the data volume to be managed is reduced. Further, by eliminating the need for a server having a database in which base station information, area information, and broadcast station information are associated with each other, the server cost can be reduced. In addition, since it is possible to set an information table related to appropriate broadcasting station information without depending on the broadcasting area, even if the mobile communication device cannot receive digital terrestrial broadcasting radio waves in the valleys of the buildings or underground, it can move. The communication terminal can set broadcast station information based on base station information.

  Next, the configuration of the entire communication system according to Embodiment 1 of the present invention will be described with reference to FIG. This communication system includes a broadcast station 21, a broadcast station 31, a base station 22, a base station 32, and a mobile terminal 40. Broadcast station 21 belongs to broadcast area 20, and broadcast station 31 belongs to broadcast area 30. The base station 22 has a mobile communication area 23, and the base station 32 has a mobile communication area 33. In FIG. 2, the mobile terminal 40 belonging to the broadcast area 20 and the mobile communication area 23 has moved to the broadcast area 30 and the mobile communication area 33.

  Here, FIG. 2 illustrates an example in which the broadcast area and the mobile communication area are changed by the movement of the mobile terminal 40. However, when the broadcast area is changed by moving the mobile terminal in the same mobile communication area, In some cases, the mobile communication area is changed by moving the mobile terminal in the same broadcast area.

  When a wireless LAN system is used for the mobile communication system, an access point device may be used instead of the base station. An access point device is a device that performs authentication of a communication device when performing wireless LAN communication with a communication device having a wireless LAN function.

  Further, FIG. 2 shows an example in which the base station is changed as an example in which the mobile communication area for managing the mobile terminal is changed. However, a service provided by a communication carrier or an ASP (Application Service Provider) is used as the mobile communication area. It may be an area managed by position information provided as The broadcast area may include a terrestrial digital television broadcast area and a digital radio broadcast area.

  Next, processing of the mobile communication device according to the first embodiment of the present invention will be described using the processing flowchart of FIG. First, the mobile communication device 10 receives base station information of a base station with which the mobile communication device 10 is in communication by the mobile communication system communication unit 11 (S101). Specifically, a base station ID for identifying the base station is received.

  Next, it is detected based on the received base station information whether or not the base station with which the mobile communication device 10 is communicating has changed (S102). Specifically, the base station ID currently held is compared with the received base station ID. If the base station IDs match, the process is terminated assuming that the base station with which the mobile communication device 10 is communicating has not been changed. The base station ID currently held is compared with the received base station ID. If the base station IDs do not match, it is determined that the base station with which the mobile communication device 10 is communicating has changed, Detect that the base station is changed. If it is detected that the base station has been changed, the processing is continued.

  Next, local information is received from the broadcasting station with which the broadcasting system communication part 13 is communicating (S103). Specifically, the area information includes a Tokyo area, a Hokkaido area, and the like, which are broadcasting areas to which the broadcasting station belongs.

  Next, it is determined whether or not to generate a record that associates the changed base station ID with the area information and broadcast station information corresponding to the changed base station ID (S104). Specifically, it is confirmed whether or not the information table 16 includes a record indicating the changed base station ID and the corresponding area information and broadcast station information. Specifically, as shown in FIG. 6, the information table 16 stores base station information, area information, and broadcast station information in association with each other. If the same base station ID as the base station ID after the change exists in the information table 16, the process is ended assuming that there is no difference information in the information table 16. When the same base station ID as the base station ID after the change does not exist in the information table 16, the process is continued assuming that the difference information exists in the information table 16.

  Next, when it is determined that the difference information exists in the information table 16, the information table update unit 15 generates a record in which the changed base station ID, area information, and broadcast station information are associated (S105). Specifically, as shown in FIG. 2, when the base station with which the mobile terminal communicates is changed from the base station 22 to the base station 32, a record in which the base station 32, the regional information, and the broadcast station are associated with each other is generated. The information table 16 is updated (FIG. 7).

  By the above processing, only the broadcasting station information corresponding to the base station with which communication has been performed in the past or in the past is stored as an information table, so that it is not necessary to store the broadcasting station information corresponding to all base stations nationwide. The data capacity can be greatly reduced.

  In addition, although FIG. 3 mainly illustrates communication between the mobile terminal and the base station, the same processing can be performed in communication between the wireless LAN terminal and the access point. In this case, in FIG. 6 to FIG. 8, access point information is managed instead of base station information.

  Further, in the processing shown in FIG. 3, the area information is received after the base station switching is detected, but the reception of the area information may be performed before the base station switching is detected. In other words, the reception of the regional information can be performed independently. The broadcast station information may be used only when there is a change in the base station with which the mobile communication device 10 is communicating, there is no corresponding base station information in the information table, and a new record is added.

(Embodiment 2)
Next, processing of the mobile communication device according to the second embodiment of the present invention will be described using the processing flowchart of FIG. The mobile communication device 10 acquires location information provided by the communication carrier or ASP (Application Service Provider) in the location information service in the mobile communication system communication unit 11 (S201). Here, the position information in the present embodiment is wide area information representing the Tohoku area, Kansai area, etc., information on the prefecture basis representing the Tokyo area, Osaka area, etc., information on the station name basis, and the like. Since the processing after S202 is the same as that in FIG.

  The location information can be acquired by the mobile communication device actively acquiring the location information for the communication carrier or ASP, or even if the location information is automatically notified from the communication carrier or ASP to the communication device. Good.

  The creation of an information table triggered by a change in location information provided by a communication carrier or ASP has the following advantages. For example, by setting an area wider than the area covered by the base station as the range of position information, it becomes possible to reduce the opportunity for the mobile communication device to start the processing shown in FIG. Further reduction is possible.

(Embodiment 3)
Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 5 shows details of the information record update processing. The table is managed by adding information indicating the unused period to the record in which the base station and the broadcast station are associated (FIG. 8). The unused period is, for example, when the mobile communication device 10 is not located in the area under the base station 1 and has not used the broadcast station information for 30 days in the area under the base station 1, the unused period is 30 days. It becomes.

  The information record update unit 15 periodically detects the unused period (S301). The information record update unit 15 sets a threshold for the unused period in advance, and deletes the corresponding record when an unused period exceeding the threshold is detected (S302). For example, when the threshold for the unused period is 50 days, the record relating to the base station 1 in FIG. 8 has an unused period of 30 days, so the threshold is not exceeded and the record is not deleted. The record relating to the base station 2 exceeds the threshold because the unused period is 70 days, and the record is deleted.

  By deleting records that have exceeded a preset unused period, it is possible to prevent an increase in data capacity and to further reduce the data capacity.

  The above description describes the embodiment of the present invention, and the present invention is not limited to the above embodiment. Further, those skilled in the art can easily change, add, and return each element of the above-described embodiment within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Mobile communication apparatus 11 Mobile communication system communication part 12 Position information acquisition part 13 Broadcast system communication part 14 Area information acquisition part 15 Information table update part 16 Information table 20 Broadcast area 21 Broadcast station 22 Base station 23 Mobile communication area 30 Broadcast area 31 Broadcast station 32 Base station 33 Mobile communication area 40 Mobile terminal

Claims (8)

An information table that associates regional information with broadcast station information that can be received in the region;
A position information acquisition unit for acquiring position information indicating the current position of the mobile communication device from the mobile communication system;
An area information acquisition unit for acquiring area information included in information received at the current position from the broadcasting system;
An information table update unit that stores the position information acquired by the position information acquisition unit in the information table in association with the corresponding region information and receivable broadcast station information based on the region information acquired by the region information acquisition unit. A mobile communication device comprising:
The information table update unit updates the information table when the position information acquired by the position information acquisition unit does not exist in the information table, and the position information acquired by the position information acquisition unit exists in the information table. 2. The mobile communication device according to claim 1, wherein the information table is not updated.
The information table updating unit deletes area information and broadcasting station information associated with the position information for position information in which the position information is not referred to for a predetermined period. The mobile communication device according to claim 1 or 2.
The location information acquisition unit acquires base station information during communication,
The information table update unit stores the information in the information table in association with the corresponding regional information and receivable broadcast station information based on the base station information acquired by the position information acquisition unit. 4. The mobile communication device according to any one of 3 to 3.
Obtaining position information indicating the current position of the mobile communication device from the mobile communication system,
Get the regional information included in the information received at the current location from the broadcasting system,
A data generation method for storing the position information in an information table in association with corresponding area information and receivable broadcast station information based on the area information. Updating the information table if the location information does not exist in the information table;
6. The data generation method according to claim 5, wherein the information table is not updated when the position information exists in the information table.
Determine whether the period when the location information is not referenced exceeds a predetermined period,
7. The data generation method according to claim 5, wherein regional information and broadcast station information associated with the position information are deleted from the position information whose non-reference period exceeds a predetermined period.
As the position information, obtain base station information in communication,
8. The data generation method according to claim 5, wherein the information table is stored in association with the corresponding regional information and receivable broadcast station information based on the base station information.

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