JPH0937332A - Radio telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio telephone system capable of accurately restricting a user's current position in respect to a radio telephone system for executing time-division multiple access(TDMA) communication. SOLUTION: The radio telephone set is provided with an idle slot detecting part 12 and a switch for turning on/off the reception of a position information signal synchronously with idle slot time is arranged on the receiving side of a switch part for switching transmission/reception to detect a position information signal for a base station existing around the radio telephone system. A position display terminal equipment recognizes plural base stations from received signals obtained by the above constitution and restricts and displays a user's position based upon the overlap and differences among the speaking areas of those base stations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless mobile phone for performing TDMA communication and a wireless phone device used therein.

[0002]

2. Description of the Related Art In a wireless mobile phone that performs time division multiplex (TDMA) communication, a base station and a terminal each have an individual ID (personal identification number) or the like to identify each other and recognize each other. You can FIG. 20 shows an outline of a system that performs TDMA communication. Therefore, for example, in a service center that manages the wireless telephone service itself, it is possible to confirm which wireless telephone device or the like exists in which communication area of which base station. On the other hand, if the user of the wireless telephone device has information on the location of the base station and the call area, the user can easily confirm his / her own area by the ID of the base station and the call area.

The base station and the radiotelephone device transmit and receive control signals to each other in the process of allocating communication channels. Therefore, the wireless telephone device recognizes the partner base station, outputs the information to the control unit of the device having the location of the base station, the communication area, or the surrounding map, etc., and displays the map. The current location of the telephone device user can be easily known as the communication area of the base station.

[0004]

However, in the above-mentioned conventional structure, if the communication area of the base station during communication is used as the position information, the radius of several tens to several hundreds of meters is obtained. Even when used together with, it was difficult to limit the location of the user of the wireless telephone device.

An object of the present invention is to provide a wireless telephone device which can limit the location of the user of the wireless telephone device.

[0006]

In order to solve the above-mentioned conventional problems, the present invention receives a slot other than the call slot in which communication is currently being performed, receives the other base station, and receives this. The current position information is calculated from the signal and the signal from the base station currently communicating.

[0007]

With the above-described structure, the present invention makes it possible to calculate the current position information using the signals of a plurality of base stations.

[0008]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIG.

FIG. 1 shows a TD according to a first embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a wireless telephone device that performs MA communication. In FIG. 1, 1 is an antenna section for transmitting and receiving radio signals, 2 is a transmission / reception changeover switch section for switching between transmission and reception for each slot, 3 is a voice signal transmission section for modulating radio signals, and 4 is a radio telephone device. The control unit 5 for controlling the whole is in a receivable state, power ON / OFF, or
A display unit that displays information output from the control unit 4, such as channels used for transmission and reception, and is configured by an LCD (liquid crystal display) or the like. 6 is an operation unit connected to the control unit 4,
It is for inputting operation signals of various functions such as dial input, power ON / OFF, redial, hold, etc., and push type seems convenient. Reference numeral 7 is a microphone unit connected to the control unit 4 for inputting voice, and 8 is a speaker unit for outputting voice. Reference numeral 9 is a reception voice / positional information changeover switch unit for switching between reception of a voice signal and reception of a position information signal, 10 is a voice signal receiving unit for demodulating the voice signal, and 11 is position information signal reception for demodulating the position information signal. It is a department. Here, the transmission / reception changeover switch unit 2 and the reception voice / positional information changeover switch unit 9 are controlled by the control unit 4 on the switching timing. Reference numeral 12 is an empty slot detection unit connected to the control unit 4 to detect an empty slot which is not used for transmission or reception, and 13 outputs the received position information signal and the ID of the base station in communication to the outside. The interface part.

Regarding the wireless telephone device configured as described above, the flow of operation during a call is shown in the flowchart of FIG. 2 and transmission (TX), reception (RX) of FIG. A description will be given using a timing chart showing the timing of switching the voice / positional information switch unit 9. First, when an operation for confirming the position is performed by the operation unit 6 (step 1), the microphone unit 7, the control unit 4, the voice signal transmission unit 3, the transmission / reception changeover switch unit 2, the antenna unit 1 are used in the call of the wireless telephone device. (TX) performed via the antenna unit 1, the transmission / reception changeover switch unit 2, the reception voice / position information changeover switch unit 9, the voice signal receiving unit 10, the control unit 4, and the speaker unit 8 (TX). RX) is performed alternately and at a constant timing as shown in FIG. By inputting the transmission / reception timing information to the empty slot detection unit 12, the empty slot detection unit 12 detects a slot in which neither transmission nor reception is performed, that is, an empty slot (see FIG. 3B). Step 2). Using the timing signal of this empty slot, the control unit 4 switches the reception voice / positional information changeover switch unit 9 (step 3). By this switching, the radio signal of the base station in the communication area of the radio telephone device is received and the position information of the peripheral base stations is obtained in the empty slot (step 4). The received signal (position information signal) unrelated to the call thus obtained and the ID of the base station in the call
Is output from the interface unit 13 to the outside (step 5).

(Embodiment 2) FIG. 4 is a block diagram showing a configuration of a position display terminal device for obtaining position information of a user of a radiotelephone device performing TDMA communication in a second embodiment of the present invention. is there. In FIG. 4, 14 is an interface unit for inputting an external signal, 15 is a control unit for controlling the entire position display terminal device, 16 is the above-mentioned position information signal, and only position information is extracted so that the control unit 15 can easily process it. The location information processing unit 17 is a memory unit (or C that stores data such as the location of base stations, a call area, or a peripheral map).
D drive unit), 18 is a display unit for displaying a display signal output from the control unit 15, and 19 is an operation unit for operating the position display terminal device.

The operation of the position display terminal device configured as described above will be described with reference to the flowchart of FIG.

The position information signal received by the wireless telephone device is input from the interface section 14 (step 6). This position information signal is input to the position information processing unit 16, where the control signal ID unique to the base station is discriminated and the base station is recognized (step 7). Further, the IDs of the base stations in communication are collated, the base stations in communication and the base stations not in communication are discriminated, and these data signals are output to the control unit 15 (step 8). The control unit 15 obtains data such as the location of the base station, the communication area and the peripheral map information from the memory unit 17 from the input position information signal of the base station (step 9), and displays them on the display unit 18. Output (step 10) (step 11).

The result thus obtained is displayed on the display unit 1.
Display at 8. The display content will be described with reference to FIGS. 6 and 7. In FIG. 6, reference numeral 20 denotes a call area of a call base station making a call. Reference numerals 21 and 22 denote call areas of peripheral base stations other than the base station having the call area indicated by 20, that is, a base station that can be recognized by the position information processing unit 16 other than the base station in the call (for example, call It is the location of the base station adjacent to the inside base station) and the communication area.
Reference numeral 23 denotes an overlapping portion of the call areas of the base stations 20, 21, 22 and this corresponds to the location area of the wireless telephone device.

FIG. 7 shows a display result of the position display terminal device when only one base station information is obtained from the position information signal in the position information processing section 16. Reference numeral 24 is the call area of the call base station that can be recognized as described above. In this case, the location area of the wireless telephone device is displayed as 25 by performing the process of subtracting the call area of the peripheral base station.

(Third Embodiment) A third embodiment of the present invention will be described below with reference to the drawings.

FIG. 8 shows the TD in the third embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a wireless telephone device that performs MA communication. In FIG. 8, 1 is an antenna unit for transmitting and receiving radio signals, 2 is a transmission / reception changeover switch unit for switching between transmission and reception for each slot, 3 is a voice signal transmission unit for modulating radio signals, and 4 is the entire radio telephone device. A control unit for controlling
Reference numeral 5 denotes a display unit for displaying information output from the control unit 4, such as a receivable state, power ON / OFF, a channel used for transmission / reception, and the like, which is composed of an LCD or the like. An operation unit 6 is connected to the control unit 4 and is used for dial input and power ON.
It is for inputting operation signals of various functions such as / OFF or redial or hold, etc. Push type seems to be convenient. Reference numeral 7 is a microphone unit connected to the control unit 4 for inputting voice, and 8 is a speaker unit for outputting voice. Reference numeral 9 is a reception voice / positional information changeover switch unit for switching between reception of a voice signal and reception of a position information signal.
Is a voice signal receiver that demodulates a voice signal, and 11 is a position information signal receiver that demodulates a position information signal. Here, the transmission / reception changeover switch unit 2 and the reception voice / positional information changeover switch unit 9 are controlled by the control unit 4 on the switching timing. Reference numeral 12 is an empty slot detection unit connected to the control unit 4 for detecting an empty slot that is not used for transmission or reception, and 26 is for detecting the reception electric field strength of the position information signal which is the object of the present invention. It is a reception electric field strength detection unit. An interface unit 13 outputs the signal received to obtain the position information, the ID of the base station in communication, and the received electric field strength to the outside.

With respect to the wireless telephone device for performing TDMA communication configured as described above, the flow of operation during a call will be described with reference to the flowchart of FIG. Since the detection of the empty slot is the same as that of the embodiment, its explanation is omitted (step 12) (step 13).

First, by using the timing signal of the empty slot output from the empty slot detector 12 for the timing of the voice / positional information changeover switch through the controller 4, the wireless signal in the wireless telephone communication area is received (step 14) (step 15). Further, the received electric field strength detection unit 26 detects the received electric field strength of the received position information and converts it into a received electric field strength signal (step 1).
6). The received signal (position information signal) irrelevant to the call, the ID of the base station in the call, and the received electric field strength signal thus obtained are output from the interface unit 13 to the outside (step 17).

(Embodiment 4) FIG. 10 is a block diagram showing a configuration of a position display terminal device for obtaining position information of a radiotelephone device for TDMA communication according to a fourth embodiment of the present invention. In FIG. 10, 14 is an interface unit for inputting an external signal, 15 is a control unit for controlling the entire position display terminal device, 16 is a position for digitally processing the above-mentioned position information signal so that the control unit 15 can easily process the position information signal. An information processing unit, 17 is a memory unit (or a CD drive unit) that stores data such as the arrangement of base stations, a call area or a peripheral map, and 18 is a display unit that displays a display signal output from the control unit. Reference numeral 19 is an operation unit for operating the position display terminal device, and 27 is a distance calculation unit for calculating the distance to the base station from the received electric field strength.

FIG. 11 is an example of a graph showing the relationship between the received electric field strength and the distance. Thus, the received electric field strength is
If it is strong, the distance to the base station is short, and if it is weak, it is far. Since the distance calculation unit 27 has such graph information, the distance to the base station can be calculated from the received electric field strength.

The operation of the position display terminal device configured as described above will be described with reference to the flowchart of FIG.

The position information signal received by the wireless telephone device and the received electric field strength signal are input from the interface section 14 (step 18). This position information signal is
It is input to the position information processing unit 16, where the ID which is the control signal unique to the base station is discriminated and the base station is recognized (step 20). Furthermore, collate with the ID of the base station in the call,
A base station in communication and a base station not in communication are discriminated and these data signals are output (step 21). At this time, the received electric field strength signal is input to the distance calculation unit 27,
The control unit 15, which is referred to in the above-mentioned ID verification converted from the information of the graph shown in FIG. 3 into a signal representing the distance to the base station, determines the position of the base station from the determination result of this ID. (Step 21), data such as the layout of the base station and peripheral map information is obtained from the memory unit 17 (Step 22), and the current position is specified from the positional relationship with the base station (Step 23). They are output to the display unit 18 (step 24).

The results obtained as described above are displayed on the display unit 18 as shown in FIGS. 13 and 14 as in the previous example. In FIG. 13, reference numeral 28 is a circle whose center is the base station in communication and whose radius is the distance from the base station to the wireless telephone device. Reference numerals 29 and 30 denote base stations other than the base station indicated by 28, that is, the base stations that can be recognized by the distance calculation unit 27 other than the base station that has shown the largest received electric field strength (for example, the base station in communication). Is a circle whose radius is the position of the base station adjacent to the base station) and the distance from the base station centered to the position to the wireless telephone device. Reference numeral 31 denotes an overlapping portion of circles centering on 28, 29 and 30 base stations, which corresponds to the area where the wireless telephone device is located.

FIG. 14 shows the position information processing unit 16
It is a display result of the position display terminal device when only the base station information is obtained from the position information signal. 32
It is a circle centered on the previously recognized base station. In this case, by performing the process of subtracting the control signal receivable area of the peripheral base station, the location area of the wireless telephone device is
It is displayed as 33.

(Fifth Embodiment) A fifth embodiment of the present invention will be described below with reference to the drawings.

FIG. 15 shows T in the fifth embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a wireless telephone device that performs DMA communication. In FIG. 15, 1 is an antenna section for transmitting and receiving radio signals, 2 is a transmission / reception changeover switch section for switching between transmission and reception for each slot, and 34 is a transmission voice / position for switching between transmission of a voice signal and transmission of a position information signal. The information changeover switch unit, 3 is a voice signal transmitting unit that modulates a voice signal, and 35 is a position information signal transmitting unit that modulates a position information signal. 4 is a control unit for controlling the entire wireless telephone device, 5
Is a display unit that displays information output from the control unit 4, such as a receivable state, power ON / OFF, and channels used for transmission / reception, and is configured by an LCD or the like. Reference numeral 6 denotes an operation unit connected to the control unit 4 for operating this wireless telephone device from the outside, for inputting operation signals of various functions such as dial input, power ON / OFF, redial and hold. It seems that the push type is convenient. Reference numeral 7 is a microphone unit connected to the control unit 4 for inputting voice, and 8 is a speaker unit for outputting voice. 9
Is a reception voice / positional information changeover switch unit for switching between reception of a voice signal and reception of a position information signal, 10 is a voice signal receiving unit for demodulating a voice signal, and 11 is a position information signal receiving unit for demodulating a position information signal. Is. Here, the transmission / reception changeover switch unit 2, the reception voice / positional information changeover switch unit 9 and the transmission voice / positional information changeover switch unit 34 are controlled by the control unit 4 on the switching timing. Reference numeral 12 is an empty slot detection unit connected to the control unit 4 to detect an empty slot that is not used for transmission or reception, and 36 is a memory unit for temporarily storing the received position information signal.

The operation flow of the radiotelephone device for TDMA communication configured as described above will be described with reference to the flowchart of FIG. 16 and the time chart of FIG. FIG. 17A shows that the reception voice / positional information changeover switch unit 9 and the transmission voice / positional information changeover switch unit 34 are turned on with respect to time changes of TX, RX, and empty slots.
It shows the timing of / OFF. In the call of the wireless telephone device, the microphone unit 7, the control unit 4, the voice signal transmission unit 3, the transmission voice / positional information changeover switch unit 34, the transmission /
Transmission (TX) performed through the reception changeover switch unit 2 and the antenna unit 1, and the antenna unit 1, the transmission / reception changeover switch unit 2, the reception voice / positional information changeover switch unit 9, the voice signal receiving unit 10, and the control unit 4. , And reception (RX) performed through the speaker unit 8 are alternately performed cyclically as shown in FIG. 17A in the time of one slot. When the position confirmation operation is performed here (step 25), the timing information of the transmission and reception is used as the empty slot detection unit 1
2 is input to the empty slot detecting unit 12 in FIG.
An empty slot having the timing as shown in (b) is detected (step 26). Of the timing signals, the control unit 4 extracts the timing of reception (see FIG. 17).
(See (c)) By using this timing for the reception voice / positional information changeover switch unit 9 and the voice / positional information changeover switch unit 34 (step 27), the radio signal in the radiotelephone communication area is set in the reception empty slot. It is received (step 28). The position information of the other base station thus obtained is stored in the temporary memory unit 36 (step 2
9). Then, the received signal (positional information signal) unrelated to the call and the ID of the base station in the call are transmitted to the outside through the empty transmission slot (step 30).

(Embodiment 6) FIG. 18 is a block diagram showing a configuration of a position display terminal device for obtaining position information of a user of a radiotelephone device for performing TDMA communication in a sixth embodiment of the present invention. is there. In FIG. 18, 37 is an antenna unit that receives the position signal from the wireless telephone device and the ID of the base station in communication, 38 is a receiving unit that demodulates the received signal, 1
Reference numeral 5 is a control unit for controlling the entire position display terminal device, 16 is a position information processing unit for digitally processing the above-mentioned position information signal so that the control unit 15 can easily process the position information signal, and 17 is an arrangement of base stations, a call area or the vicinity. A memory unit (or a CD drive unit) that stores data such as a map, 18 is a display unit that displays a display signal output from the control unit, and 19 is an operation unit that operates the position display terminal device.

The operation of the position display terminal device configured as described above will be described with reference to FIG.

The position information signal transmitted from the wireless telephone device and the ID of the base station in communication are received by the antenna unit 37 (step 31). This position information signal,
The ID of the base station in the call is demodulated by the receiving unit 38 (step 32) and then input to the position information processing unit 16,
Here, the control signal unique to the base station is discriminated to identify the base station (step 33). Further, the IDs of the base stations in the call are collated to discriminate between the base station in the call and the base station not in the call, and these data signals are sent to the control unit 1.
5 (step 34). The control unit 15 determines the location of the base station based on the input position information signal of the base station.
Data such as call areas and surrounding map information is stored in the memory unit 17
The location information of the base station that has obtained the current location information is calculated (step 3).
6) and output them to the display unit 18 (step 3)
7).

The results obtained as described above are displayed on the display section 18 as shown in FIGS. In FIG. 20, reference numeral 20 is a call area of a call base station making a call. Reference numerals 21 and 22 denote call areas of peripheral base stations other than the base station having the call area indicated by 20, that is, a base station that can be recognized by the position information processing unit 16 other than the base station in the call (for example, call It is the location of the base station adjacent to the inside base station) and the communication area. 23 is 20, 2
The overlapping area of the communication areas of the base stations 1 and 22 corresponds to the location area of the wireless telephone device.

In FIG. 21, in the position information processing unit 16,
It is a display result of the position display terminal device when only the base station information is obtained from the position information signal. 24 is
This is the communication area of the base station that was recognized above. In this case, the location area of the wireless telephone device is displayed as 25 by performing the process of subtracting the call area of the peripheral base station.

[0034]

The present invention receives a slot other than the communication slot in which communication is currently being performed and receives it in another base station, and from this received signal and the signal from the base station currently in communication. Since the current position information is calculated, it becomes possible to calculate the current position information using the signals of multiple base stations, compared to when the position information of the base station is only the information of the base station in communication. , More accurate position information can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a wireless telephone device that performs TDMA according to a first embodiment of the present invention.

FIG. 2 is a flowchart when receiving other base station position information of the wireless telephone device of the first embodiment of the present invention.

FIG. 3 is a timing chart showing a time change of a slot of the wireless telephone device according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a position display terminal device for obtaining position information of a user of a wireless telephone device that performs TDMA according to a second embodiment of the present invention.

FIG. 5 is a control flowchart of the position display terminal device according to the second embodiment of the present invention.

FIG. 6 is a diagram showing an example of a display result when the positional information of the peripheral base stations according to the second embodiment of the present invention can be recognized.

FIG. 7 is a diagram showing an example of a display result when the position information of peripheral base stations of the second embodiment of the present invention cannot be recognized.

FIG. 8 is a block diagram showing the configuration of a wireless telephone device that performs TDMA communication according to the third embodiment of the present invention.

FIG. 9 is a flowchart for receiving other base station position information of the wireless telephone device of the third embodiment of the present invention.

FIG. 10 is a block diagram showing a configuration of a position display terminal device for obtaining position information of a wireless telephone device that performs TDMA according to a fourth embodiment of the present invention.

FIG. 11 is a graph showing the relationship between the received electric field strength and the distance in the fourth embodiment of the present invention.

FIG. 12 is a control flowchart of the position display terminal device according to the fourth embodiment of the present invention.

FIG. 13 is a diagram showing a display result example when the position information of the peripheral base stations of the fourth embodiment of the present invention can be recognized.

FIG. 14 is a diagram showing an example of a display result when the position information of the peripheral base stations of the fourth embodiment of the present invention cannot be recognized.

FIG. 15 is a block diagram showing the configuration of a wireless telephone device that performs TDMA communication according to a fifth embodiment of the present invention.

FIG. 16 is a flowchart when receiving other base station position information of the wireless telephone device of the fifth embodiment of the present invention.

FIG. 17 is a timing chart showing the time change of the slot of the wireless telephone device and the time change of the reception state of the position terminal display device of the fifth embodiment of the present invention.

FIG. 18 is a block diagram showing a configuration of a position display terminal device for obtaining position information of a user of a wireless telephone device performing TDMA communication according to a sixth embodiment of the present invention.

FIG. 19 is a control flowchart of the position display terminal device according to the sixth embodiment of the present invention.

FIG. 20 is a display example diagram when a peripheral base station is recognized in a sixth embodiment of the present invention.

FIG. 21 is a display example diagram when a peripheral base station cannot be confirmed in the sixth embodiment of the present invention.

[Explanation of symbols]

 9 reception voice / position information changeover switch unit 11 position information signal reception unit 12 empty slot detection unit 13 interface unit 14 interface unit 15 control unit 16 position information processing unit 17 memory unit 18 display unit 19 operation unit 20, 24 call base station Call areas 21, 22 Call areas of peripheral base stations 23, 25, 31, 33 Location areas of wireless telephone devices 26 Received electric field strength detection section 27 Distance calculation section

Claims (7)

[Claims] 1. A communication unit that communicates with a base station by time division multiplex communication, and a base station other than a base station that communicates with the communication unit using a slot that is not used for communication of the communication unit. A receiver that receives a wireless signal, a wireless signal from a base station communicating with the communication unit, and a controller that calculates current position information from the wireless signal received by the receiver are provided. Characteristic wireless telephone device. 2. The receiving unit receives wireless signals from a plurality of base stations, and the control unit is a base communicating with the wireless signals of the plurality of base stations received by the receiving unit and the communication unit. 2. The wireless telephone device according to claim 1, wherein the current position information is calculated from the wireless signal from the station. 3. The receiving unit and the communication unit receive information for specifying a base station sent from a base station, and the control unit receives the information received by the receiving unit and the communication unit. The wireless telephone device according to claim 1 or 2, wherein the current position information is calculated from the information for specifying the base station. 4. A storage unit for storing position information of a plurality of base stations; and the control unit, based on the information for identifying the base stations received by the receiving unit and the communication unit, for each of the received base stations. 4. The position information of is extracted from the storage unit, and the current position information is calculated from the position information.
The described wireless telephone device. 5. A second storage unit for storing map information including position information of the base station, and a display unit for displaying map information, wherein the control unit calculates the current position information based on the calculated current position information. The map information of the peripheral portion of the position of is extracted from the second storage unit,
The wireless telephone device according to claim 1, wherein the wireless telephone device is displayed on the display unit. 6. The communication unit and the receiving unit, when receiving a signal from a base station, detect the reception intensity thereof, and the control unit also refers to the detected reception intensity to detect the current position. The wireless telephone device according to any one of claims 1 to 5, wherein information is calculated. 7. The wireless telephone device according to claim 1, wherein the control unit transmits the current position information calculated by controlling the communication unit to the base station.