JPH1079972A - Mobile communication terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately measure a location with small traffic by deciding the existence of arrival in a set area by electric field intensity. SOLUTION: When a user reaches a set destination, a PHS terminal device 1 associates a reference electric field intensity RSSI value of a place where alarm is desired to be rung with an individual identification number CSID and stores it as reference position information in a reference data storing means 11. A data storage circuit 12 receives a signal from each base station according to a timing signal from a timer circuit 18 and stores a RSSI value that is detected by an RSSI measuring circuit 9 and a CSID detecting circuit 8 and a CSID together with a present time from a clock circuit 17 as position information in the circuit 12. A deciding circuit 16 decides that it reaches a destination when reference position information coincides with position information and sends a coincidence signal to controlling part 5. The part 5 sends an alarm signal to an alarm sending part 19, makes the part 19 generate alarm tones and also makes an output device 22 show place name information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal used for mobile communication such as a personal handyphone system.

[0002]

2. Description of the Related Art PHS which is one of mobile communication terminals
Conventionally, some terminals have a function of using a time measurement function and transmitting an alarm sound at a preset time. FIG. 7 shows a conventional PH having a clock alarm function.
It is a functional block diagram of S terminal. In FIG. 7, 1 is P
The HS terminal 2 is a receiving unit of the PHS terminal, and the transmitting unit 3 is also connected to the antenna 4 to transmit and receive radio signals. Reference numeral 5 denotes a control unit that controls the reception unit 2 and the transmission unit 3, reference numeral 6 denotes a microphone that converts audio into an electric signal and outputs the electric signal to the transmission unit 3, reference numeral 7 denotes a speaker that outputs an audio signal received by the reception unit as audio, Reference numeral 8 denotes a CSID detection circuit that detects an individual identification number (hereinafter, referred to as CSID) of a base station from a reception signal received by the reception unit 2. Reference numeral 15 denotes a storage circuit that stores a set value of a timer 18 set by the control unit 5. Is a timer circuit that measures time using the set value set in the storage circuit 15. 19 controls the sounder 20 when the time of the timer circuit 18 indicates the set time based on an instruction from the control unit 5. , An alarm sending unit that sends an alarm,
21 is for the user to input information such as dial, various settings,
An input device that converts this information into an electric signal and outputs it to the control unit 5, for example, a keyboard is used. Reference numeral 22 denotes an output device that displays various information such as a dial number and a call state under the control of the control unit 5.

Next, the operation will be described. In the conventional PHS terminal 1 shown in FIG. 7, an alarm sounds at a set time by using a timer circuit 18 mounted in the terminal. First, the PHS terminal user calculates the required time to the destination, for example, and inputs the required time in advance using the input device 21.
Enter using. The input required time is stored in the storage circuit 15 via the control unit 5. The timer circuit 18
When the required time is set in the storage circuit 15, the time measurement is started, and when the read required time matches the measured required time, a signal indicating the completion of the measurement is output to the alarm sending unit 19. The alarm sending unit 19 that has received the signal of the measurement completion controls the sounder to generate an alarm sound.
Therefore, the user of the PHS terminal knows that the set required time has elapsed, and can predict that he or she is near the destination.

[0004]

The above-mentioned alarm function of the conventional mobile communication handset is effective when the user wants to know the passage of time. However, when using such a function and wanting to know the spatial position at the time of movement, etc., the distance between two points and the movement speed are assumed, the time is calculated in advance and input again, Since the alarm sound is transmitted by estimating the time, there is a problem that the alarm sound is not notified at a desired place if the estimation of the distance between the two points and the estimation of the moving speed are incorrect.

[0005] Further, in a method in which a plurality of intermediate stations (base stations) cooperate to determine the position of a mobile communication terminal device as in the communication system described in JP-A-6-334595, the base station side The mobile communication terminal device could not know its own position because of the location information. In this case, if the mobile communication terminal device attempts to check its own position, it is necessary to perform new communication with the base station and to transmit and receive the position information checked by the base station, which may cause a problem that traffic increases. .

[0006] The present invention has been made to solve such a problem, and an object of the present invention is to provide a mobile communication terminal device which can obtain high-accuracy position information with little traffic.

[0007]

In a mobile communication terminal according to the present invention, individual identification information of a base station in a preset area and electric field strength of a radio signal corresponding to the individual identification information are stored. Storage means, receiving means for receiving a radio signal from the base station at the current position, electric field strength detecting means for detecting the electric field strength of the radio signal received by the receiving means, and individual identification from the radio signal received by the receiving means Individual identification information extracting means for extracting information, a combination of the individual identification information extracted by the individual identification information extracting means and the electric field intensity detected by the electric field intensity extracting means corresponding to the individual identification information, A determination means for comparing the combination of the stored individual identification information and the electric field strength corresponding to the individual identification information to determine whether the predetermined area has been reached. When, those having a.

[0008] Also, storage means for storing individual identification information of each of a plurality of base stations in a preset area, and the electric field strength of a radio signal corresponding to each of the individual identification information, and a plurality of base stations at the current position. Receiving means for receiving a radio signal from each; electric field strength detecting means for detecting the electric field strength of each of the plurality of radio signals received by the receiving means; and individual identification information from each of the plurality of radio signals received by the receiving means. Individual identification information extraction means to be extracted, a combination of a plurality of individual identification information extracted by the individual identification information extraction means, and electric field strengths detected by the electric field strength extraction means respectively corresponding to these individual identification information, and By comparing a plurality of individual identification information stored in the means with a combination of the electric field intensity corresponding to each of these individual identification information, Determination means for determining arrived in preset areas, those having a.

[0009] Further, there is provided an alarm sending means for outputting an alarm when the judging means judges that the vehicle has arrived at the preset area.

[0010] The determining means may determine whether or not the plurality of pieces of individual identification information extracted by the individual identification information extracting means and the plurality of pieces of individual identification information stored in the storage means coincide with each other. And an alarm sending means for changing the strength of the alarm based on the judgment result of the proximity of the judging means and outputting an alarm.

The determining means determines the proximity to a predetermined area according to the electric field strength, and the alarm sending means changes the strength of the alarm based on the determination result of the proximity of the determining means. Output an alarm.

Further, the receiving means receives a radio signal from another mobile communication terminal, and receives individual identification information of a base station included in the received radio signal from the other mobile communication terminal,
And reference position information extracting means for extracting the electric field strength of a radio signal corresponding to the individual identification information, wherein the storage means stores the individual identification information extracted by the reference position information output means and a radio signal corresponding to the individual identification information. Is stored.

[0013] Further, storage means for storing individual identification information of each of a plurality of base stations in a preset area, and reception means for receiving a radio signal including individual identification information from each of the plurality of base stations at the current position. Individual identification information extracting means for extracting a plurality of individual identification information from the radio signal received by the receiving means, a plurality of individual identification information extracted by the individual identification information extracting means, and individual identification information stored in the storage means. And an alarm sending unit that outputs an alarm when the determining unit determines that the vehicle has arrived at the predetermined area. Things.

[0014] The determining means may determine whether or not the plurality of pieces of individual identification information extracted by the individual identification information extracting means coincide with the plurality of pieces of individual identification information stored in the storage means. The proximity is determined, and the alarm sending means
The strength of the alarm is changed and an alarm is output based on the determination result of the proximity of the determination means.

The receiving means receives a radio signal from another mobile communication terminal, and extracts individual identification information of each of the plurality of base stations included in the received radio signal from the other mobile communication terminal. Reference position information extracting means,
The storage means stores the plurality of individual identification information extracted by the reference position information output means.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, as an example of the mobile communication terminal device,
The PHS terminal will be described.

FIG. 1 is a functional block diagram of the PHS terminal according to the first embodiment. In FIG. 1, 1 is a PHS terminal, 2 is a receiving unit that receives radio signals from a plurality of bases,
Reference numeral 3 denotes a transmitting unit for transmitting a voice signal or the like to the base station, 4 denotes an antenna for outputting a radio signal received from the air to the receiving unit 2, and an antenna for transmitting the transmitting signal received from the transmitting unit 3 to the air, and 5 denotes a receiving unit. And a control unit that controls the operation of the PHS terminal 1 such as the transmission unit 3.

Reference numeral 6 denotes a microphone that converts sound into an electric signal and outputs the signal to the transmitting unit 3, 7 denotes a speaker that outputs the sound signal received by the receiving unit 2 as sound, and 8 denotes a base station based on the received signal received by the receiving unit 2. A CSID detecting circuit 9 for detecting an individual identification number (hereinafter, referred to as CSID) of the radio wave (hereinafter referred to as CSID).
A comparison circuit that compares the RSSI value output from the RSSI circuit 9 with a reference value set in advance by the control unit 5 and outputs an RSSI value exceeding the reference value. For a plurality of received signals exceeding the reference value, the RSSI value output from the comparison circuit 10 and C
A reference data storage circuit for storing the CSID detected by the SID detection circuit 8 in association with the CSID;
D, a data storage circuit that sequentially stores, in chronological order, RSSI values corresponding to these reference CSIDs, and times when the reference CSIDs or RSSI values are recorded.

Reference numeral 16 denotes a combination of a plurality of reference CSIDs stored in the reference data storage circuit 11 and reference RSSI values corresponding to these CSIDs, and a plurality of CSIDs stored in the data storage circuit 12 and corresponding to these CSIDs. This is a determination circuit for comparing whether or not the combination of the RSSI values matches. Reference numeral 17 denotes a clock circuit that outputs current time data to the time section of the data storage circuit 12. Reference numeral 18 controls a storage operation of the data storage circuit, and the CSID, the RSSI value, and the like are stored in the data storage circuit 12 at predetermined time intervals.
This is a timer circuit for storing time.

Reference numeral 19 denotes a sounder 2 based on an instruction from the control unit 5.
This is an alarm sending unit that controls 0 and sends an alarm. Reference numeral 21 denotes an input device for inputting information such as a dial, a place name, and other various settings by a user, converting the information into an electric signal, and outputting the electric signal to the control unit 5. Reference numeral 22 denotes an output device that displays various information such as a dial number, a place name, and a call state under the control of the control unit 5. Here, the receiving unit 2 is a receiving unit, the RSSI circuit 9 is a field intensity detecting unit, and the CSID detecting circuit 8 is an individual identification information extracting unit. The determination circuit 16 has a role of a determination unit, and the reference data storage circuit 11 has a role of a storage unit and a time storage unit.

Next, the operation will be described. Antenna 4
Is receiving radio waves transmitted from one or more base stations when powered on. The base station periodically outputs a radio wave including the CSID, and the antenna 4 outputs the radio wave to the receiving unit 2. The range of radio waves transmitted by base stations is limited, and as shown in FIG. 2, among many base stations nationwide, only some base stations can receive radio waves from the current position of PHS terminal 1. Bureau. 2, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. In FIG. 2, the PHS terminal 1 can receive radio signals of three base stations a to c. Also, JP-A-6-3
When an intermediate station is connected to a base station as disclosed in Japanese Patent No. 34595, the intermediate station is also included in the base station.
The receiving unit 2 detects a received signal received by the antenna 4,
The signal is demodulated and output to the CSID detection circuit 8 and the RSSI circuit 9. Here, when radio waves are received from a plurality of base stations, a received signal exists for each base station.

RSS which receives a received signal from receiving section 2
I circuit 9 detects the electric field strength of the received signal and outputs an RSSI value. The RSSI value differs depending on the distance between the PHS terminal 1 and the base station, the terrain around the current position of the PHS terminal 1, and the like. Therefore, the RSSI value output by the RSSI circuit is determined for each base station, such as level 1 for the received signal of base station a and level 2 for the received signal of base station b. Similarly, the CSID detection circuit 8 that has received the received signal from the receiving unit 2 detects a CSID included in the received signal. A different number is assigned to the CSID for each base station. By detecting the CSID, it is possible to know from which base station the received signal was transmitted. When a received signal is received from each of the plurality of base stations, a plurality of CSIDs are sequentially output.

{Registration Mode} Here, the operation when setting the destination will be described. The PHS terminal user registers the reference CSID and the RSSI value at a place where he / she wants the alarm to sound. Registration is performed by pressing a key of the input device 21 and issuing a registration command to the control unit 5, and the control unit 5 performs the operation in the registration mode thereafter. The control unit 5 that has received the registration command
Outputs a timing signal to the comparison circuit 10. Upon receiving the timing signal, the comparison circuit 10 drives the RSSI circuit 9, selects one of the RSSI values output by the RSSI circuit 9 having an RSSI value equal to or greater than the reference value, and sequentially sends the selected RSSI value to the reference data storage circuit 11. Output.

The reference data storage means 11 having received the RSSI value from the comparison circuit 10 stores the RSSI value, receives the CSID corresponding to the received RSSI value from the CSID detection circuit 8, associates the two with each other, and sets them as one set. Remember. The comparison circuit 10 receives the RSSI for a predetermined period.
In order to compare the values, if a plurality of reception signals are received during that time, a plurality of sets are stored in the reference data storage circuit 11. Hereinafter, the RSSI value and the CSID stored in the reference data storage unit 11 are used as reference position information indicating the destination, and serve as a reference for whether or not the destination has been reached. ,
The reference RSSI and the reference CSID stored in the reference data storage circuit 11 are referred to as reference position information.

Here, when the RSSI value is smaller than the reference value specified by the control unit 5, the comparison circuit 10
Since the I value is not output to the reference data storage circuit 11, CS
Even if the CSID is output from the ID detection circuit 8, the CSID and the RSSI value are not stored in the reference data storage circuit 11. Therefore, registration of a distant base station can be prevented. In addition, the control unit 5 controls the reference data storage unit 1
1 to determine whether the reference CSID or the like is stored. If the reference CSID or the like is not stored, the comparison circuit 10
, The comparison circuit 10 and the like can be controlled so that the CSID of a weaker radio wave can be registered.

In the registration mode, reference position information of a plurality of destinations can be registered, and a group name is automatically assigned to each destination. Here, group names are assigned such as alphabetical letters "A", "B", "C".

In the registration mode, place name information may be stored in order to make it easier to recognize which destination the registered position information is. In this case, the place name information input from the input device 21 is written by the control unit 5 into the column of the group name of the reference data storage circuit 11.
Thus, the registration of the information of the position at which the alarm is sounded (registration mode) ends.

The reference position information is set in advance by the PHS
The reference position information may be obtained from a database built in the terminal 1 and selected from a menu displayed on the output device 22. In this case, there is an effect that a position other than the current position can be set as the reference position. In addition, the reference position information stored in the database may be updated by acquiring the latest data from the base station. In this case, there is an effect that the latest system state can be handled. Further, the reference position information may be externally input by another method. For example,
The numerical value displayed on the data sheet is manually input using the input device 21.

(2) Alarm Sound Transmission Mode Next, the operation when the PHS terminal user sets the alarm sound transmission mode by the input device 21 after completing the above-mentioned destination registration will be described. First, the timer circuit 18 outputs a timing signal at predetermined time intervals. Upon receiving this timing signal, the data storage circuit 12 outputs the RSSI, CS output from the RSSI circuit 9.
CSID output by ID detection circuit 8 and clock circuit 17
Is stored as position information. At this time, the data storage circuit 12 stores a set of a plurality of CSIDs and RSSI values, similarly to the reference data storage circuit 10.
However, if only a received signal from one base station is received by the antenna 4, one set of CSID and R
The SSI value is stored. FIG. 3 is a diagram showing storage contents stored in the data storage circuit 12. Timer circuit 1
The content stored by one timing signal output by 8 is, for example, as indicated by a group symbol A, a set of a plurality of CSID and RSSI values and the time at that time.

At this time, the group symbol assigned as the area name is automatically assigned when the moving route is recorded. At this time, if the group symbols overlap, P
Since the user of the HS terminal cannot recognize the location, the assignment is performed so as not to overlap. And the PHS terminal user,
Enter the area name based on the group symbol. The input of the area name may not be performed on the spot, but may be performed at any time after the recording of the movement route.

Also, each base station sets its own location name to P
Since it can also be transmitted to the HS terminal 1, the most RSSI
The name of a base station having a large value may be automatically registered as an area name. The PHS terminal user can later input an accurate area name based on the area name. Also,
The area name information corresponding to the CSID may be stored in a rewritable storage device, and this storage device may be built in the PHS terminal 1. In this case, the control device 5 reads out the area name information corresponding to the CSID from the storage device,
Automatically register as area name 2. The information stored in the storage device is rewritten to the latest information when the configuration of the entire system changes. As described above, a PHS terminal user can later input an accurate area name. The area information described here is used in a movement history display mode described later.

The data storage circuit 12 executes the above operation every time the timing signal from the timer circuit 18 is output. At this time, the stored contents of the CSID, the RSSI value, and the time relating to the past travel route are not erased, but are sequentially stored in a form in which new stored contents are passed. Therefore, the data storage circuit 12 accumulates position information on the movement route of the PHS terminal together with the time.

On the other hand, a new CSI is stored in the data storage circuit 12.
When the position information such as D is stored, the determination circuit 16 determines whether the current position information stored in the data storage unit 12 matches the reference position information stored in the reference data storage circuit. . In the determination method, the same CSID as one CSID stored in the reference data storage circuit 11 is searched from the data storage circuit 12, and the RSID corresponding to the CSID stored in the reference data storage unit 11 and used as a search key is determined.
The SSI value and the CS stored and retrieved in the data storage circuit 12
It is determined whether the RSSI value corresponding to the ID is the same. Then, this determination is performed for all the CSIDs belonging to one destination stored in the reference data storage circuit 11, and if all the CSIDs match, it is determined that the vehicle has arrived at the destination. Further, when a plurality of destinations are set, the above-described processing is similarly performed for each destination.

As a case where it is determined that they do not match,
The CSID stored in the reference data storage circuit 11 is
When there is no current position information stored in the data storage circuit 12 and when the CSID stored in the reference data storage circuit 11 is present in the current position information stored in the data storage circuit 12, RS corresponding to CSID
RSSI corresponding to SI value and CSID of current location information
If the values do not match. That is, if a set having the same combination as the set of the reference CSID and the reference RSSI is not included in the current position information of the data storage circuit 12, it is determined that they do not match.

When the judgment circuit 16 judges that the two coincide with each other,
A match signal is output from the determination circuit 16 to the control unit 5. The control unit 5 receiving this coincidence signal sends the alarm transmission unit 1
9 and outputs the place name information stored in the reference data storage circuit 11 to the output device 2.
2 to display the group name, that is, the place name information on the output device 22. When receiving the alarm signal, the alarm sending section 19 controls the sounder 20 to output an alarm sound. The alarm sound may be sound. Further, instead of the alarm sound, a vibrator circuit (not shown) may be driven to vibrate the PHS terminal to generate an alarm.

Here, since the determination circuit 16 determines not only the CSID but also the RSSI value, a more detailed position can be specified. FIG. 4 is a diagram for explaining a state in which the PHS terminal 1 crosses the communication areas of the three base stations a to c, and is viewed from above. L1
Each circle shown by indicates the range in which the RSSI value of the radio wave from each base station located at the center of the circle has a level 1 intensity. Similarly, L2 indicates a range in which the RSSI value of the radio wave from each base station located at the center of the circle has level 2 intensity. Reference numeral 23 denotes a moving route of the PHS terminal 1.

At a point P1 on the moving route 23 of the PHS terminal 1, as shown in FIG.
The SSI values are L2, L1, and L2 in this order. Here, the CSID of the base station a is 1, the CSID of the base station b is 2, and the CSID of the base station c is 3. At the point P2, the RSSI values of radio waves from the base stations a to c are L2, L2, L
2. As described above, even points where radio waves of the base stations a to c can be received can be classified by the RSSI value, and a more detailed position can be specified.

In the above PHS terminal 1, CSID
And when the pair of RSSI values match, the alarm is to be sounded, but if it does not match, when it comes near the reference position, it will sound a weak alarm, and will sound a stronger alarm as it approaches the reference position Can be In this case, the determination circuit 16 detects that the vehicle is near the reference position. For example, if the reference position information is three CSI
D, the CSID detection circuit 8
When it detects two CSIDs included in the reference position information, it is determined that the vehicle has arrived near the reference position. That is, the proximity to the destination is determined according to the number of the reference CSID and the CSID detected by the CSID detection circuit 8 at the current location. At this time, if all the CSIDs match, it can be determined that the vehicle has arrived at the destination.

Alternatively, all Cs included in the reference position information
Even if the SID is detected but the RSSI value is different, it can be determined that the vehicle has arrived near the reference position. In other words, even if all of the reference position information does not match, when a part of the reference position information matches, it is determined that the position is near the destination, and as the degree of matching increases, it is determined that the position is closer to the destination. In this case, the more the number of matches between the reference RSSI value and the RSSI value detected by the RSSI circuit 9 at the current position, that is, the same CSID, that is, the closer to the destination, the closer to the destination. It is determined that, even with the mismatched RSSI values, the smaller the difference between the RSSI values to be compared, the closer to the destination.

The detection result is transmitted to the control unit 5, and the control unit 5 outputs an alarm sound according to the proximity to the destination, 2, 3,.
Ring four times. Thereafter, when the determination circuit 16 determines that the vehicle has arrived at the reference position as described above, the alarm circuit continues to sound. As described above, the alarm is displayed with the strength corresponding to the reference position, that is, the distance to the destination.
The S user can approach the destination and know that he or she has arrived, which is very easy to use.

In the above PHS terminal 1, CSID
Although the alarm is sounded when the set of the RSSI value and the RSSI value match, the alarm may be sounded when the set does not completely match and is close to a predetermined value or more.

As described above, in this alarm sound transmission mode, the judgment circuit 16 determines that the vehicle has arrived at the destination, and drives the sounder to output an alarm sound.
The user of the PHS terminal can be notified that the user has arrived at the destination.

Further, once the alarm is sounded, if the alarm is not sounded at the same place for a certain period of time, the alarm sounds repeatedly, and there is no operation for turning off the alarm sound each time, so that there is no trouble. effective.

As described above, according to the first embodiment,
Highly accurate position information can be obtained, and the alarm can be operated more accurately at the destination. In particular, there is no need to exchange position information with the base station, and there is a feature that traffic is small. When activating an alarm at a destination, it is necessary to confirm the current position with considerable frequency. However, if the base station knows the position information, it is necessary to inquire the base station every time the current position is confirmed and obtain the position information from the base station, and the traffic increases according to the number of inquiries. Furthermore, since the acquisition of the position information needs to be performed for each mobile communication terminal device, the traffic explosively increases. On the other hand, according to the first embodiment, the mobile communication terminal detects the CSID transmitted by the normal base station and calculates the current position, so that radio waves are used only for confirming the current position. No need, no increase in traffic. Further, even if the number of mobile communication terminal devices increases, the traffic for current position confirmation does not increase, and limited radio waves can be used effectively, which is extremely significant.

Next, the movement history display mode will be described. The route traveled by the PHS terminal user is stored in the data storage circuit 12 as described above. When viewing the movement history, the PHS terminal user presses a button of the input device 21 to instruct the control unit 5 to display the movement history. The control unit 5 receiving this instruction causes the output device 22 to display the time and the area name stored in the data storage circuit 12. FIG. 6 shows the output device 2
2 is the display content. As described above, the PHS terminal user can confirm the movement history of the PHS terminal that has been moved later on the PHS terminal side.

Embodiment 2 In the first embodiment, the current position can be registered as the destination in the registration mode. The second embodiment is an embodiment in which a destination other than the current position can be registered as a destination by receiving reference position information from the outside. First, a case where reference position information is obtained from another PHS terminal 1 will be described. here,
Other PHS terminals have the same configuration as that shown in FIG. When acquiring reference position information from another PHS terminal 1, first, a line is set so that a call can be made between the two PHS terminals 1. This line is similar to the normal line setting of the PHS.

Subsequently, the user of the PHS terminal on the transmitting side presses the button of the input device 21 to instruct transmission of the reference position information. The control unit 5 of the transmitting side PHS terminal 1
When receiving the signal instructing the transmission from, the CSID detecting circuit 8 and the RSSI circuit 9 detect the CSID and the RSSI value of the current position via the receiving unit 2. The detected CSID and RSSI value are stored in the data storage circuit 12. The control unit 5 reads the CSID and the RSSI value of the current position stored in the data storage circuit 12 and transmits the read CSID and the RSSI value to the transmission unit 3 as reference position information. The transmitting unit 3 modulates the received CSID and RSSI value and transmits the modulated CSID and RSSI as radio waves via the antenna 4.

The operation of receiving-side PHS terminal 1 is basically the same as in the first embodiment. However, the difference is that the receiving unit 2 or the control unit 5 functions as reference position information extracting means.
The role of the reference position information extracting means may be assigned to either the receiving unit 2 or the control unit 5. The operation will be described below. When the reference position information is transmitted from the transmitting PHS terminal 1, the receiving PHS terminal 1 receives the reference position information transmitted by the receiving unit 2. The receiving unit 2 transmits the received reference position information to the control unit 2, and the control unit 5 writes the received reference position information into the reference data storage circuit 11. Through the above processing, the reference position information moves from another PHS terminal 1, that is, the transmitting PHS terminal 1 to the receiving PHS terminal 1.

The receiving side PHS terminal 1 having received the reference position information thereafter shifts to the alarm sound transmission mode. The operation in the alarm sound transmission mode is as described in the first embodiment.

As described above, according to the second embodiment, since reference position information can be obtained from another PHS terminal 1, reference position information can be set even in a place where the user has not been. , Alarm can be operated.

[0051]

According to the present invention, there is provided a mobile communication terminal device comprising:
The configuration as described above has the following effects.

Storage means for storing the individual identification information of the base station in the preset area and the electric field strength of the radio signal corresponding to the individual identification information; and receiving means for receiving the radio signal from the base station at the current position. An electric field strength detecting means for detecting the electric field strength of the radio signal received by the receiving means; an individual identifying information extracting means for extracting individual identifying information from the radio signal received by the receiving means; and the individual identifying information extracting means. A combination of the extracted individual identification information and the electric field intensity detected by the electric field intensity extraction unit corresponding to the individual identification information, and the individual identification information stored in the storage unit and the electric field intensity corresponding to the individual identification information Determining means for comparing with the combination to determine whether or not the mobile terminal has arrived at the preset area. Traffic between the base stations can be reduced.

A storage means for storing the individual identification information of each of the plurality of base stations in the preset area and the electric field strength of the radio signal corresponding to each of the individual identification information; Receiving means for receiving a radio signal from each; electric field strength detecting means for detecting the electric field strength of each of the plurality of radio signals received by the receiving means; and individual identification information from each of the plurality of radio signals received by the receiving means. Individual identification information extraction means to be extracted, a combination of a plurality of individual identification information extracted by the individual identification information extraction means, and electric field strengths detected by the electric field strength extraction means respectively corresponding to these individual identification information, and By comparing a plurality of individual identification information stored in the means with a combination of the electric field intensity corresponding to each of these individual identification information, Because comprising determination means for determining arrived in preset areas, and can be positioned more accurately detect and to reduce the traffic between the mobile communication terminal apparatus and the base station.

In addition, since the determination means is provided with an alarm sending means for outputting an alarm when it is determined that the vehicle has arrived at the preset area, the alarm can be output at a more accurate position and the moving body can be output. Traffic between the communication terminal device and the base station can be reduced.

Further, the judging means determines whether or not the plurality of pieces of individual identification information extracted by the individual identification information extracting means coincide with the plurality of individual identification information stored in the storage means. Alarm output means for changing the strength of the alarm based on the determination result of the proximity of the determination means and outputting an alarm, so that the alarm can be output at a more accurate position, and The traffic between the body communication terminal device and the base station can be reduced, and the user can recognize that the vehicle is approaching the destination.

The judging means judges the proximity to a preset area according to the electric field strength, and the alarm sending means changes the strength of the alarm based on the judgment result of the judging means. Since the alarm is output, the alarm can be output at a more accurate position, the traffic between the mobile communication terminal device and the base station can be reduced, and the user can confirm that the user is approaching the destination. Can be recognized.

Further, the receiving means receives a radio signal from another mobile communication terminal device, and individual identification information of a base station included in the received radio signal from the other mobile communication terminal device;
And reference position information extracting means for extracting the electric field strength of a radio signal corresponding to the individual identification information, wherein the storage means stores the individual identification information extracted by the reference position information output means and a radio signal corresponding to the individual identification information. Since the electric field strength of the mobile communication terminal device can be stored, an alarm can be output at a more accurate position, traffic between the mobile communication terminal device and the base station can be reduced, and the reference position from another mobile communication terminal device can be reduced. Since information can be obtained, a destination other than the current position can be registered as a destination.

Further, storage means for storing individual identification information of each of a plurality of base stations in a preset area, and receiving means for receiving a radio signal including individual identification information from each of the plurality of base stations at the current position. Individual identification information extracting means for extracting a plurality of individual identification information from the radio signal received by the receiving means, a plurality of individual identification information extracted by the individual identification information extracting means, and individual identification information stored in the storage means. And an alarm sending unit that outputs an alarm when the determining unit determines that the vehicle has arrived at the predetermined area. The alarm can be output at a more accurate location, and the traffic between the mobile communication terminal and the base station can be reduced. That is approaching can be recognized.

Further, the judging means determines whether or not the plurality of pieces of individual identification information extracted by the individual identification information extracting means coincide with the plurality of pieces of individual identification information stored in the storage means. The proximity is determined, and the alarm sending means
Based on the determination result of the proximity of the determination means, the strength of the alarm is changed and the alarm is output, so that the alarm can be output at a more accurate position and the traffic between the mobile communication terminal device and the base station can be output. Can be reduced, and the user can recognize that the user is approaching the destination.

The receiving means receives a radio signal from another mobile communication terminal and extracts individual identification information of each of the plurality of base stations included in the received radio signal from the other mobile communication terminal. Reference position information extracting means,
The storage means stores the plurality of individual identification information extracted by the reference position information output means, so that an alarm can be output at a more accurate position, and the traffic between the mobile communication terminal device and the base station is reduced. Since the reference position information can be obtained from another mobile communication terminal device, a destination other than the current position can be registered as a destination.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating a PHS terminal according to Embodiment 1 of the present invention.

FIG. 2 is a system configuration diagram illustrating a mobile communication terminal device and a base station according to Embodiment 1 of the present invention.

FIG. 3 is a diagram showing stored contents of a data storage circuit according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a state when moving paths of a plurality of base stations and mobile communication slave units according to Embodiment 1 of the present invention are viewed from above.

FIG. 5 is a view showing an RSSI value at each point in FIG. 4 according to the first embodiment of the present invention.

FIG. 6 is a diagram showing display contents in a movement history display mode according to the first embodiment of the present invention.

FIG. 7 is a functional block diagram illustrating a PHS terminal according to the related art.

[Explanation of symbols]

1 PHS terminal, 2 receiver, 3 transmitter, 4
Antenna, 5 control unit, 6 microphone, 7 speaker, 8 CSID detection circuit, 9 RSSI circuit,
10 comparison circuit, 11 reference data storage circuit, 12
Data storage circuit, 16 judgment circuit, 17 clock circuit, 18 timer circuit, 19 alarm sending section,
20 sounders, 21 input devices, 22 output devices

Claims (9)

[Claims] 1. A storage unit for storing individual identification information of a base station in a preset area and an electric field strength of a radio signal corresponding to the individual identification information, and receiving a radio signal from a base station at a current position. Means; electric field strength detecting means for detecting the electric field strength of the radio signal received by the receiving means; individual identification information extracting means for extracting individual identification information from the radio signal received by the receiving means; A combination of the individual identification information extracted by the means and the electric field intensity detected by the electric field intensity extraction means corresponding to the individual identification information; the individual identification information stored in the storage means; and the electric field intensity corresponding to the individual identification information. A determination unit that determines whether the vehicle has arrived at the preset area by comparing the combination with the mobile communication terminal device. 2. A storage means for storing individual identification information of each of a plurality of base stations in a preset area, and electric field strength of a radio signal corresponding to each of the individual identification information, and a plurality of base stations at a current position. Receiving means for receiving a radio signal from each; electric field strength detecting means for detecting the electric field strength of each of the plurality of radio signals received by the receiving means; and individual identification information from each of the plurality of radio signals received by the receiving means Individual identification information extraction means to be extracted, a combination of a plurality of individual identification information extracted by the individual identification information extraction means, and electric field strengths detected by the electric field strength extraction means respectively corresponding to these individual identification information, and By comparing a plurality of individual identification information stored in the means with a combination of electric field strengths corresponding to each of the individual identification information, A mobile communication terminal device comprising: a determination unit configured to determine whether the vehicle has arrived at a set area. 3. The mobile communication terminal according to claim 1, further comprising an alarm sending unit that outputs an alarm when the determining unit determines that the vehicle has arrived at a preset area. apparatus. 4. The determining means determines whether or not the plurality of pieces of individual identification information extracted by the individual identification information extracting means and the plurality of pieces of individual identification information stored in the storage means coincide with each other. 3. The mobile communication terminal device according to claim 2, further comprising: an alarm sending unit that changes the strength of the alarm based on a determination result of the proximity of the determining unit and outputs an alarm. . 5. The determining means determines the proximity to a preset area according to the electric field strength, and the alarm sending means changes the strength of the alarm based on the determination result of the proximity of the determining means. 4. The mobile communication terminal device according to claim 3, wherein an alarm is output. 6. A receiving means for receiving a radio signal from another mobile communication terminal device, individual identification information of a base station included in the received radio signal from the other mobile communication terminal device, and the individual identification information Reference position information extraction means for extracting the electric field strength of the radio signal corresponding to the information, the storage means stores the individual identification information extracted by the reference position information output means and the electric field strength of the radio signal corresponding to the individual identification information. The mobile communication terminal device according to claim 3, wherein the mobile communication terminal device stores the information. 7. A storage unit for storing individual identification information of each of a plurality of base stations in a preset area, and a receiving unit for receiving a radio signal including individual identification information from each of a plurality of base stations at a current position. A plurality of individual identification information extracting means for extracting a plurality of individual identification information from the radio signal received by the receiving means; a plurality of individual identification information extracted by the individual identification information extracting means; and individual identification information stored in the storage means. And a determining means for determining whether the vehicle has arrived at the predetermined area. If the determining means determines that the vehicle has arrived at the area,
A mobile communication terminal device comprising: an alarm sending unit that outputs an alarm. 8. The determining means determines whether a plurality of individual identification information extracted by the individual identification information extracting means coincide with the plurality of individual identification information stored in the storage means up to a predetermined area. 8. The mobile communication terminal device according to claim 7, wherein the closeness is determined, and the alarm sending unit changes the strength of the alarm and outputs the alarm based on the closeness determination result of the determination unit. . 9. A receiving means for receiving a radio signal from another mobile communication terminal, and extracting individual identification information of each of a plurality of base stations included in the received radio signal from the other mobile communication terminal. 9. The mobile communication terminal device according to claim 7, further comprising: a reference position information extracting unit configured to store the plurality of pieces of individual identification information extracted by the reference position information output unit.