JP2010278558A - Radio communication terminal, communication system and communication method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically change the setting of the output characteristics of a transmitter, in a radio communication terminal into one which is based on the content stipulated by the latest communications laws. <P>SOLUTION: The radio communication terminal includes a communication processor 21, a memory 26, and a transmitter 30, and the communication processor communicates with a base station using radio waves of a first frequency band; the memory stores a table T2 where stipulated items in a regulation specifying agreement about usage of radio waves are described; and the transmitter transmits data to other communication equipment using radio waves of a second frequency band different from the first frequency band. The output characteristics of the transmitter 30 are controlled, based on first stipulated items which are stipulated items stored at the table T2 in the memory 26; the first stipulated items are compared with second stipulated items which are the latest stipulated items in regulations accumulated in a server 1; and when it is determined that it is necessary to update the first stipulated items, the second stipulated items are acquired from the server 1, and the first stipulated items are overwritten with the second stipulated items. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wireless communication terminal, a communication system, and a communication method that are suitable for a mobile phone terminal having an FM radio wave transmission function, for example.

  Recent mobile phone terminals are becoming more and more multifunctional, and in addition to a transmitter / receiver for connecting to a mobile phone network, a device including a transmitter such as an FM transmitter is also appearing.

  Here, transmitters (FM transmitters, etc.) built in mobile phone terminals generally have their transmission levels defined, and specifically, the maximum transmission level can be obtained within a range that does not violate the Radio Law. Is set. In addition, transmitters such as FM transmitters mounted on mobile phone terminals are set in accordance with the specifications of each country regarding the transmission level and frequency band, and whether transmission is possible or not.

  For this reason, when the mobile phone terminal is brought into a foreign country with the setting conforming to the radio law of the home country, various problems described below occur. FIG. 6 is a diagram showing an example when the mobile phone terminal 100 is brought from country a where use of the transmitter is permitted to country b where use of the transmitter is prohibited. In the transmitter (not shown) in the mobile phone terminal 100 used in the country a, the output level of the radio wave output from the mobile phone terminal 2 is within the range prescribed by the radio law in the country a. Is set to If the mobile phone terminal 100 is brought into country b without changing this setting, radio waves can be transmitted using the transmitter. However, in country b, transmission of radio waves using a transmitter is an act in violation of the Radio Law.

  FIG. 7 shows an example in which the mobile phone terminal 100 is carried between country a and country b where the allowable values of the radio wave output level by the transmitter are different. In FIG. 7, it is assumed that the upper limit value R1 of the radio wave output level specified by the radio law of country a is lower than the upper limit value L2 of the radio wave output level specified in country b. For this reason, the mobile phone terminal 100 assumed to be used in country a is set so that it cannot transmit radio waves with an output greater than the output level upper limit value R2 (a country specification).

  When the country-specific mobile phone terminal 100 set in this way is brought into country b, the level of radio waves output from the mobile phone terminal 100 even though country b can transmit radio waves up to the output level L2. Can only be raised to the output level L1. That is, since the transmission distance of the radio wave is shorter than that of the mobile phone terminal that can be used up to the output level L2 that is used in country b, a difference in the feeling of use is generated.

  On the other hand, when the mobile phone terminal 100 that is set to output up to the output level L2 is brought into a country where only output up to the output level L1 is permitted, it violates the radio law of country a. It will end up.

  As a technique for solving such a problem, for example, Patent Document 1 discloses that a certain country can be deleted by deleting information stored in the wireless configuration information storage unit of the rewritable wireless device at the immigration or immigration office. Describes a technology that can prevent the transmission of noise radio waves when a wireless device that functions in accordance with this standard is taken to another country.

Japanese Patent Laid-Open No. 2004-247819

  By the way, the Radio Law is updated from time to time in each country, and the upper limit of the output level of radio waves and the availability information of transmitters may be changed by the revision of the Radio Law. However, in the conventional technique as described in Patent Document 1, even when the radio wave law is revised, the settings and control contents of the transmitter in the mobile phone terminal 100 are not changed. For this reason, if the mobile phone terminal 100 is used for a long period of time without changing the settings and the Radio Law is revised during that time, the act of using the transmitter itself or the radio wave from the transmitter In some cases, the output level of violates the Radio Law.

  The present invention has been made in view of such a point, and an object thereof is to automatically change the setting of the output characteristics of the transmitter of the wireless communication terminal to the one based on the contents specified by the latest radio wave law. .

  The wireless communication terminal according to the present invention stores a communication processing unit that communicates with a base station using radio waves in the first frequency band, and a table that describes prescribed items in the regulations in which agreements relating to the use of radio waves are prescribed. And a transmitter that transmits data to another communication device using radio waves in a second frequency band different from the first frequency band. And while controlling the output characteristic of a transmitter based on the 1st regulation item which is the regulation item memorized by the table of a storage part, the latest in the regulations accumulated in the server acquired via the communication processing part When the second specified item, which is a specified item, is compared with the first specified item and it is determined that the first specified item needs to be updated, the second specified item is acquired from the server. The first specified item was overwritten.

  By doing so, when the first prescribed item described in the table stored in the wireless communication terminal is different from the second prescribed item stored in the server, specifically, the first prescribed item is different. When the item information is old, the first specified item is overwritten by the second specified item which is the latest specified item. Then, the transmission characteristics of the wireless communication terminal are controlled using the overwritten first specified item.

  According to the present invention, since the transmission characteristics of the wireless communication terminal are controlled based on the latest specified items, the act of using the transmitter itself and the output level of the radio wave from the transmitter are No longer violates

It is a block diagram which shows the structural example of the system by one embodiment of this invention. It is explanatory drawing which shows the structural example of the table in the mobile telephone terminal by one embodiment of this invention. It is a flowchart which shows the example of operation | movement of the mobile telephone terminal by one embodiment of this invention. It is explanatory drawing which shows the example of a change of the output characteristic setting of the mobile telephone terminal by one embodiment of this invention. It is explanatory drawing which shows the example of a change of the output characteristic setting of the mobile telephone terminal by one embodiment of this invention. It is explanatory drawing which shows the example of the problem which arises at the time of the movement to the other country of the past. It is explanatory drawing which shows the example of the problem which arises at the time of the movement to the other country of the past.

[System internal configuration example]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. In this embodiment (hereinafter also referred to as this example), an example in which the wireless communication terminal of the present invention is applied to a mobile phone terminal provided with an FM transmitter as a transmitter will be given.

  The transmitter is not limited to the FM transmitter. For example, the present invention may be applied to a transmitter that performs wireless communication such as a wireless local area network (LAN), a radio frequency identification (RFID), a universal mobile telecommunications system (UMTS), or a global system for mobile communications (GSM). Further, as a wireless communication terminal, the present invention may be applied to other terminals such as PDA (Personal Digital Assistants), game devices, music or video playback devices.

  FIG. 1 is a block diagram showing a system configuration example of this example. The system of this example includes a server 1 and a mobile phone terminal 2. For example, the server 1 is assumed to be installed in a base station or a relay station for telephone communication (not shown).

  First, the configuration of the server 1 will be described. The server 1 includes a control unit 11, a communication processing unit 12, and a storage unit 14 (first storage unit). The control unit 11 includes a microprocessor or the like, and controls the communication processing unit 12 and the storage unit 14. The communication processing unit 12 controls wireless communication with the mobile phone terminal 2, and uses the first frequency band for mobile phone communication via the connected antenna 13, so that the mobile phone terminal Data transmission / reception with 2 is performed.

  The storage unit 14 is configured by, for example, an HDD (Hard Disk Drive) or the like, and stores a radio law database D1 (hereinafter also simply referred to as the database D1). The database D1 manages a table T1 in which each prescribed item (first prescribed item) prescribed by the radio law of each country is described. Each data stored in the table T1 is transmitted to the cellular phone terminal 2 via the communication processing unit 12 in response to a data acquisition request from the cellular phone terminal 2. The timing at which a data acquisition request is issued from the mobile phone terminal 2 will be described later.

  Next, the configuration of the mobile phone terminal 2 will be described. The mobile phone terminal 2 includes a control unit 21 made of a microprocessor or the like. The control unit 21 includes a control line 51 through which a control signal is transmitted or a data line 52 through which data is transmitted. Connected to each part. And the control part 21 communicates with each part through these lines, and controls operation | movement of each part.

  The mobile phone terminal 2 includes a radio telephone communication processing unit 22 that performs radio communication processing necessary as a communication terminal, and an antenna 23 is connected to the communication processing unit 22. The communication processing unit 22 performs wireless communication with a base station for wireless telephone, and performs bidirectional data transmission with the base station. The communication processing unit 22 sends the data received from the base station side to each unit in the terminal via the data line 52. In addition, data transmitted from each unit in the terminal via the data line 52 is transmitted to the base station side.

  In addition to the communication processing unit 22, a display unit 24, an operation unit 25, and a storage unit 26 (second storage unit) are connected to the control line 51. As the display unit 24, a liquid crystal display, an organic EL display, or the like is used as a display unit, and various information is displayed based on control by the control unit 21. The operation unit 25 includes dial keys such as numbers and symbols necessary for a mobile phone terminal, various function keys, and the like.

  Operation information by the user of each key constituting the operation unit 25 is supplied to the control unit 21. When performing various setting operations, for example, a display for guiding the operation is displayed on the display unit 24, and the user performs an operation on the operation unit 25 according to the display, and the corresponding setting is performed. The storage unit 26 includes a ROM (Read Only Memory) and a RAM (Random Access Memory), and stores a program necessary for operating the mobile phone terminal 2, audio data saved by the user, and the like. Further, a table T2 for accumulating data acquired from the database D1 of the server 1 is stored, and information on the date and time when the FM transmitter 30 described later is used last time is also stored.

  The control line 51 is also connected to a voice processing unit 29, an FM transmitter 30, and a GPS (Global Positioning System) 35 as a positioning unit. The audio processing unit 29 is a processing unit that performs processing related to reproduction of an audio signal, and is connected to a speaker 27 and a microphone 28. The speaker 27 and the microphone 28 are used as a receiver during a call. That is, the audio data supplied from the communication processing unit 22 to the audio processing unit 29 is demodulated by the audio processing unit 29 into an analog audio signal, and is subjected to analog processing such as amplification and emitted from the speaker 27. Further, the audio signal collected by the microphone 28 is modulated into digital audio data by the audio processing unit 29, and the modulated audio data is supplied to the communication processing unit 22 to perform wireless transmission or the like. The supply of audio data to the audio processing unit 29 is performed based on the control of the control unit 21.

  The FM transmitter 30 includes an oscillator 32, a mixer 33, and a variable gain amplifier (VGA) 34. The oscillator 32 oscillates a frequency corresponding to the oscillation frequency control signal supplied from the control unit 21 and supplies the generated frequency to the mixer 33. The mixer 33 mixes the frequency of audio data, for example, supplied from the control unit 21 and the oscillation frequency supplied from the oscillator 32 to generate an FM modulated wave. The VGA 34 adjusts the gain of the FM modulated wave based on the gain control signal supplied from the control unit 21 and supplies it to the antenna 31. The antenna 31 radiates an FM modulated wave whose gain is adjusted as a radio wave.

  Although only one oscillator 32 is shown in FIG. 1, actually, a plurality of oscillators 32 are provided according to the number assumed as the transmission frequency band (second frequency band) from the FM transmitter 30. It shall be. The selection of which oscillator 32 to use is also determined based on the control of the control unit 21.

  Such control of the FM transmitter 30 by the control unit 21 is performed based on a value (second prescribed item) described in the table T2 stored in the storage unit 26. Here, a configuration example of the table T2 will be described with reference to FIG. In the table T2, items “country identification code”, “radio law revision date”, “transmitter availability”, “maximum allowable electric field strength”, “lower limit frequency”, and “upper limit frequency” And “initial setting frequency”.

  The “country identification code” is also referred to as MCC (Mobile Country Code), and is a code used to identify the country in which the base station is installed. This code is used in common throughout the world, and a different number is assigned to each country. In FIG. 2, codes from CA, which is an identification code for country A, to CZ, which is an identification code for country Z, are registered as country identification codes.

  In “Radio Law Revision Date”, information on the date and time when the Radio Law was revised is described. In the example shown in FIG. 2, the latest revision date in country A with country identification code CA is April 1, 2007, and the latest revision date in country B with country identification code CB is September 1, 2009. Shown to be a day.

  The “transmitter availability” stores a flag indicating whether the transmitter, in this example, the FM transmitter is permitted or prohibited. The value of the flag is “1” when the use of the FM transmitter is permitted by the radio law of the country, and “0” when the FM transmitter is prohibited. In the example shown in FIG. 2, the values of the flags are all “1” except that the country identification code is CB country B and the flag is set to “0”. Therefore, it can be seen that the use of FM transmitters is permitted in countries other than Country B, and the use is prohibited in Country B.

  In the “maximum permissible value of electric field strength”, the maximum permissible value (unit: dBuV / m) of the electric field strength of weak radio waves defined by the Radio Law is registered. In Japan, the allowable value of the electric field strength at a distance of 3 meters from the radio equipment is determined for each frequency used by the radio equipment. In this example, the FM transmitter corresponds to the radio equipment in the radio wave law, and therefore, the maximum allowable value of the electric field strength in the frequency band used by the FM transmitter is described in this item. In the example shown in FIG. 2, the maximum allowable value of the electric field strength is set to 54 dBuV / m in the country A where the country identification code is CA, and the electric field strength is set in the country C where the country identification code is CC. It is shown that the maximum allowable value of is set to 50 dBuV / m.

  “Lower limit frequency” and “upper limit frequency” indicate a lower limit value and an upper limit value of a frequency band permitted to be used as a weak radio wave without a license. In the example shown in FIG. 2, use of 88 MHz (lower limit frequency) to 108 MHz (upper limit frequency) is permitted in country A and country B, and in the range of 88.2 MHz to 107.8 MHz in country Z. It is shown that the use of the frequency band is permitted.

  The “initial setting value frequency” indicates a transmission frequency that is initially set when the FM transmitter application is activated in the mobile phone terminal 2. Generally, it is often set to a value between the lower limit frequency and the upper limit frequency.

  Next, details of control of the FM transmitter 30 by the control unit 21 will be described. For example, when the mobile phone terminal 2 is brought into the country of B, the use of the transmitter (FM transmitter 30) is prohibited in the country B as described in the table T1 of FIG. Therefore, it is necessary to perform control to stop the function of the FM transmitter 30. Specifically, control for switching the output destination of transmission data such as audio data to the voice processing unit 29 (see FIG. 1) instead of the FM transmitter 30, control for minimizing the gain of the VGA 34 in the FM transmitter 30, etc. Is done.

  For example, when the mobile phone terminal 2 is brought into a country where the “maximum allowable electric field strength” is higher, the power emitted from the antenna 31 is controlled by performing feedback on the gain adjustment of the VGA 34. Thereby, the electric field intensity of the radio wave output from the antenna 31 is adjusted to the maximum within the range defined by the Radio Law.

  Further, for example, when the mobile phone terminal 2 is brought into a country where the width of the frequency band permitted to be used unlicensed as a weak radio wave is different, the optimum transmission frequency width is selected from the plurality of oscillators 32. Control is performed to select an oscillator 32 capable of realizing the above.

  Referring back to FIG. 1 again, the GPS 35 receives radio waves from a plurality of GPS satellites via the connected antenna 36, and determines the distance from each satellite, so that the current state of the mobile phone terminal 2 can be obtained. Measure the position. Positioning by the GPS 35 is performed based on control by the control unit 21.

[Processing Flow of First Embodiment]
Next, an example of the operation of the mobile phone terminal 2 will be described with reference to the flowchart of FIG.

  First, it is determined whether or not the power of the mobile phone terminal 2 is turned on (step S1). If the power is on, it is next determined whether or not the FM transmitter 30 (see FIG. 1) has been activated by the user (step S2). While the FM transmitter 30 is not activated, the determination in step S2 is continued.

  When the FM transmitter 30 is activated, it is determined whether or not the antenna 23 (see FIG. 1) has captured a radio wave from the base station (step S3). If radio waves from the base station can be captured, the country identification code received via the antenna 23 is subsequently confirmed (step S4). Usually, since the mobile phone terminal 2 receives a plurality of radio waves transmitted from a plurality of base stations, a plurality of country identification codes obtained through the radio waves are checked here. Next, it is determined whether or not different country identification codes are mixed in the received plurality of country identification codes (step S5).

  If a plurality of types of country identification codes are included, the mobile phone terminal 2 is considered to be located near the border, so positioning by the GPS 35 (see FIG. 1) in order to obtain accurate current position information. And position information is acquired (step S6). And based on the acquired positional information, the country identification code used for a setting is specified (step S7).

  Next, the database D1 (see FIG. 1) of the server 1 is accessed using the specified country identification code (step S8). Specifically, a data acquisition request is transmitted from the mobile phone terminal 2 to the server 1.

  Based on the data acquisition request, the radio law revision date information is read from the table T 1 in the database D 1 of the server 1 and transmitted to the mobile phone terminal 2. That is, information on the revision date of the Radio Law is acquired by the mobile phone terminal 2 (step S9). Subsequently, it is determined whether the date of revision of the Radio Law acquired in step S11 is later (larger) than the date when the FM transmitter 30 was used last time in the mobile phone terminal 2 (step S10).

  If the revision date of the Radio Law is later than the previous use date and time of the FM transmitter 30, then whether or not the country identification code specified in step S7 is the same as the previous use date. Is determined (step S11). If the identified country identification code is different from the one used at the previous time, data associated with the newly obtained country identification code is stored in the table T2 (step S12). The stored data is read from the table T2 (step S13).

  When it is determined in step S3 that the radio wave from the base station could not be captured, and when it is determined in step S11 that the country identification code identified in step S7 is the same as the country identification code previously referred to Data associated with the previously referred country identification code is read as a parameter for setting transmission characteristics of the mobile phone terminal 2 (step S14).

  The item of “usability of transmitter” in the read table T2 is checked, and it is confirmed whether or not the use of the transmitter (FM transmitter 30 in this example) is permitted (step S15). If the use of the transmitter is permitted, the output level and frequency range of the FM transmitter 30 are adjusted by the control of the control unit 21 (see FIG. 1) (step S16). If the use of the transmitter is prohibited, the control unit 21 disables the transmission function of the FM transmitter 30 (step S17).

  Next, it is determined whether or not the user has performed an end operation of the FM transmitter 30 (step S18), and the determination in step S18 is repeated while it is not performed. When the termination operation of the FM transmitter 30 is accepted, it is subsequently determined whether or not the power of the mobile phone terminal 2 is turned off (step S19). If the power is not turned off, the process returns to step S2 to continue the determination. If the power is turned off, the process returns to step S1.

  Next, specific processing examples in the mobile phone terminal 2 in various situations will be described with reference to FIGS. Country A, country B, and country C in FIGS. 4 and 5 correspond to country A, country B, and country C in table T2 of FIG.

  FIG. 4 is a diagram showing an example in which the mobile phone terminal 2 is brought from the country A where the use of the FM transmitter 30 is permitted to the country B where the use of the FM transmitter 30 is prohibited.

  In the country A where the use of the FM transmitter 30 is permitted, the FM transmitter 30 of the mobile phone terminal 2 is set so as to be able to emit the radio wave Ra with an intensity within a range compliant with the Radio Law (A country specification). . When such a country A-specification mobile phone terminal 2 is brought into country B where the use of the FM transmitter 30 is prohibited, it is transmitted from the base station using the FM transmitter 30 as a trigger. The country identification code is confirmed (step S8 in FIG. 3).

  If the acquired country identification code is different from the code referred to when the FM transmitter 30 was used last time, it is determined that the mobile phone terminal 2 has moved to a different country, and the server 1 accesses the database D1. Is performed (step S9 in FIG. 3). In the database D1 accessed at this time, each specified item described in the radio law of country B is described. Accordingly, since it is understood that the use of the FM transmitter 30 is prohibited in the country B, the control unit 21 (FIG. 1) sets the output destination of the transmission data such as the audio data to the voice processing unit 29 instead of the FM transmitter 30. Control to switch to is performed. Alternatively, control for minimizing the gain of the VGA 34 in the FM transmitter 30 is performed.

  When such control is performed in the control unit 21 in the mobile phone terminal 2, no radio wave is emitted from the antenna 23 (see FIG. 1) even if the user tries to use the FM transmitter 30 in Country B. .

  FIG. 5 is a diagram illustrating an example in which the mobile phone terminal 2 is carried between countries A and C, which have different regulations regarding the intensity of radio waves that can be emitted from the FM transmitter 30. In the radio law of country C, the maximum allowable value of the electric field strength is defined as 50 dBuV / m, as shown in FIG. 2 as the country identification code CC. For this reason, the mobile phone terminal 2 used in country C is set to output only radio waves up to 50 dBuV / m from the FM transmitter 30 (C country specification).

  On the other hand, in country A, the maximum allowable value of the electric field strength is defined as 54 dBuV / m, as shown in FIG. 2 as the country identification code CA. In other words, the mobile phone terminal 2 used in the country A is set so that the radio wave of up to 54 dBuV / m can be output from the FM transmitter 30 (A country specification).

  According to this example, when the mobile phone terminal 2 of country C specifications is brought into country A, access to the database D1 of the server 1 is performed (step S9 in FIG. 3). Then, control is performed to raise the level of the radio wave output from the FM transmitter 30 to the maximum allowable electric field strength in country A described in the database D1 (step S16 in FIG. 3). As a result, the FM transmitter 30 can transmit radio waves up to 54 dBuV / m.

  On the contrary, when the mobile phone terminal 2 of country A specifications is brought into country C, the level of the radio wave output from the FM transmitter 30 is set to the maximum allowable electric field intensity in country C described in the table T2. (Step S16 in FIG. 3). As a result, the intensity of the radio wave output from the FM transmitter 30 is limited to 50 dBuV / m.

[Effects of the embodiment]
According to the above-described embodiment, when entering a country where the use of the transmitter is prohibited, the transmission function of the FM transmitter 30 is invalidated by the control of the control unit 21, so that the FM transmitter 30 erroneously Radio waves will not be transmitted.

  Further, according to the above-described embodiment, the intensity of the radio wave output from the FM transmitter 30 is adjusted to be based on the maximum allowable value of the electric field intensity defined by the radio law of each country. Therefore, in a country where the maximum level is set high, the transmission distance of data by the FM transmitter 30 is extended, so that the user's feeling of use can be improved. In countries where the maximum level is set low, the intensity of radio waves output from the FM transmitter 30 is limited, so that the country's radio law is not violated.

  In addition, since the transmission frequency width from the FM transmitter 30 is also changed based on the contents defined in the Radio Law of the destination country, the number of frequency channels that can be transmitted is also a number according to the regulations of the destination country. Will be adjusted automatically.

  Further, according to the above-described embodiment, even when the mobile phone terminal 2 is located near the border, accurate current position information is acquired by the GPS 35 (see FIG. 1). Control based on the law will be appropriately performed.

  Further, in this case, when the mobile phone terminal 2 is not located near the border, it is not necessary to activate the GPS 35, so that the power consumption of the mobile phone terminal 2 can be suppressed.

  Further, according to the above-described embodiment, the reference to the database D1 in the server 1 of the country is when the FM transmitter 30 is activated and the previously referred country identification code is different from the newly acquired country identification code. Only done. Therefore, the number of acquisitions (updates) of the parameters for setting the transmission characteristics of the FM transmitter 30 through communication can be minimized. Thereby, the power consumption of the mobile phone terminal 2 can also be suppressed.

  In the above-described embodiment, the example in which the MCC is used as the information for identifying the country in which the mobile phone terminal 2 exists is described. However, the present invention is not limited to this. For example, other information such as MNC (Mobile Network Code), LAC (Local Area Code), and Cell Identity may be used.

  DESCRIPTION OF SYMBOLS 1 ... Server, 2 ... Mobile telephone terminal, 11 ... Control part, 12 ... Communication processing part, 13 ... Antenna, 14 ... Memory | storage part, 21 ... Control part, 22 ... Communication processing part, 23 ... Antenna, 24 ... Display part, 25 ... operation unit, 26 ... storage unit, 27 ... speaker, 28 ... microphone, 29 ... audio processing unit, 30 ... FM transmitter, 31 ... antenna, 32 ... oscillator, 33 ... mixer, 34 ... variable gain amplifier, 35 ... GPS , 36 ... antenna, 51 ... control line, 52 ... data line, D1 ... radio law database, T1, T2 ... table

Claims (10)

A communication processing unit that communicates with a base station using radio waves in a first frequency band;
A storage unit for storing a table in which prescribed items in the ordinance in which an agreement relating to the use of the radio waves is prescribed;
A transmitter for transmitting data to another communication device using radio waves in a second frequency band different from the first frequency band;
While controlling the output characteristics of the transmitter based on a first prescribed item that is a prescribed item stored in the table of the storage unit, and obtained through the communication processing unit in the regulations stored in the server When the second specified item, which is the latest specified item, is compared with the first specified item and it is determined that the first specified item needs to be updated, the server determines the second specified item from the server. A wireless communication terminal comprising: a control unit that acquires an item and overwrites the first specified item. The first prescribed item and the second prescribed item include revision date information of the ordinance, and the first prescribed item further includes country identification code information,
When the control unit determines that the first specified item needs to be updated, the country identification code transmitted from the base station through the radio wave of the first frequency band and acquired by the communication processing unit And the country identification code in the first specified item referred to at the previous use of the transmitter is different, and the revision date of the ordinance in the second specified item is the first The wireless communication terminal according to claim 1, wherein the wireless communication terminal is after the revision date of the ordinance in the prescribed items. The wireless communication terminal according to claim 2, wherein the control unit determines whether or not the first specified item needs to be updated when the transmitter is activated. In the first prescribed item and the second prescribed item, output level information of the radio wave from the transmitter and / or radio wave output from the transmitter is an item for determining the output characteristics of the transmitter. The frequency range information and / or the use / non-use information of the transmitter is described, and an item for determining the output characteristic of the transmitter is associated with the country identification code in the first specified item. The wireless communication terminal according to claim 3. The wireless communication terminal according to claim 4, wherein the control unit controls the transmitter using an item that determines an output characteristic of the transmitter corresponding to the country identification code acquired by the communication processing unit. It has a positioning unit that acquires the current position information of the wireless communication terminal,
The control unit, when there are a plurality of country identification codes transmitted from the plurality of base stations and received by the communication processing unit, and the types of the plurality of country identification codes are not all the same, The wireless communication terminal according to claim 5, wherein a positioning unit acquires current position information of the wireless communication terminal, and specifies the country identification code in the first specified item based on the current position information. Provided with a speaker that converts audio signals to audio
The transmitter includes a gain amplifier that adjusts an output level of a radio wave output from the transmitter.
The control unit performs a process of switching the output destination of the audio signal from the transmitter to the speaker or a process of minimizing the gain of the gain amplifier when the use of the transmitter is disabled. Item 7. A wireless communication terminal according to Item 6. The transmitter is an FM (Frequency Modulation) modulated wave, a radio wave used in a wireless local area network (LAN), a radio wave based on the UMTS (Universal Mobile Telecommunications System) standard, or a GSM (Global System for Mobile Communications) system. The radio communication terminal according to claim 7, wherein the radio communication terminal generates and outputs a radio wave based on. A first storage unit that stores a second prescribed item that is the latest prescribed item in the ordinance in which an agreement relating to the use of radio waves is prescribed;
A server comprising: a transmission unit that transmits the second specified item read from the storage unit to a wireless communication terminal;
A communication processing unit that communicates with a base station using radio waves in a first frequency band;
A second storage unit for storing a table in which prescribed items in the ordinance in which an agreement relating to the use of radio waves is prescribed;
A transmitter for transmitting data to another communication device using radio waves in a second frequency band different from the first frequency band;
The output characteristics of the transmitter are controlled based on a first prescribed item that is a prescribed item stored in the table of the storage unit, and the second prescribed item acquired via the communication processing unit and the second prescribed item Control that acquires the second specified item from the server and overwrites the first specified item when it is determined that the first specified item needs to be updated by comparing with the first specified item A communication system including a wireless communication terminal. Storing a table in which prescribed items in the ordinance in which an agreement concerning the use of radio waves is prescribed;
Obtaining a second prescribed item which is the latest prescribed item in the ordinance accumulated in the server;
When the second specified item is compared with the first specified item and it is determined that the first specified item needs to be updated, the second specified item is acquired from the server. Overwriting the first specified item;
Based on a first prescribed item that is a prescribed item stored in the table, a transmitter that transmits data to another communication device using radio waves in a second frequency band different from the first frequency band. Controlling output characteristics;
Based on the control, the transmitter transmitting the data to another communication device.
Communication method.

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