JP2002176678A - Wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a mobile phone, without the need for setting a hands-free communication mode on all occasions, when the driver drives an automobile. SOLUTION: The mobile phone capable of making a speech in the hands-free communication mode is integrated with a GPS receiver, and periodically transmits its own position information to a base station. The base station obtains a moving speed of the object mobile phone, on the basis of position detection signals received at least twice (S1, S2), sets a hands-free flag, when the moving speed is equivalent to a moving speed of an automobile (S3, S4), and transmits a message denoting a change in the flag setting to the mobile phone (S6, S7). When the mobile phone receives an incoming call, the base station designates the hands-free communication mode to the mobile phone, so as to allow the mobile phone to make a speech in the mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication system in which a radio communication apparatus is connected to a radio communication network via a base station to perform communication.

[0002]

As a wireless communication device of this type, for example, in a portable telephone, use of the device during driving of a car or the like is prohibited by law in consideration of safety. For this reason, there are mobile phones provided with functions such as setting a drive mode or a hands-free mode in response to an incoming call.

[0003] However, in practice, there are cases where a user drives a car while the mobile phone is kept in a bag, handbag, or pocket, and often forgets the mode switching setting. Although it is a useful function, the fact is that people tend to forget to set the mode switching every time they drive, or tend to neglect the trouble.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wireless communication device having a hands-free function, in which a call is automatically made in a hands-free mode when an incoming call is received when driving a car. It is an object of the present invention to provide a wireless communication system capable of performing such operations.

[0005]

According to the first aspect of the present invention, when a person having a wireless communication device is moving while driving a car or the like, the movement state of the wireless communication device is determined by the wireless communication network side. When it is detected, the wireless communication device side is set to preferentially perform the hands-free communication mode to perform the communication, so that the person holding the wireless communication device can use the hand while driving without using Communication can be automatically performed hands-free, and communication can be performed without releasing the hand of the steering wheel. As a result, safety can be improved.

[0006] In this case, the person holding the wireless communication device may:
Setting the hands-free communication mode in advance in response to driving conditions, etc., can often be forgotten, such as when an accident occurs when a call to communicate in such a state is received Can be prevented.

According to the second aspect of the present invention, in the above configuration, the detection of the movement state of the wireless communication device from the wireless communication network is determined by receiving the position detection signal of the position detecting means through the wireless communication device. Therefore, the moving state can be detected from the information of the position that changes every moment.

According to a third aspect of the present invention, in the above structure, a moving state is detected from the wireless communication network side by using a position sensor integrated with the wireless communication device as a position detecting means and using the position detection signal. Therefore, unlike the case of using a position sensor provided on a moving body such as a car, the moving state can be detected simply by carrying the wireless communication device and riding on the moving body.

According to a fourth aspect of the present invention, in the second aspect of the present invention, as the position detecting means, a position detecting means for the moving body mounted on the moving body, for example, a GPS device for detecting a position such as a car navigation device or the like. Since there is no need to add position detecting means to the configuration of the wireless communication device,
The above function can be achieved with a simple configuration.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the moving state of the wireless communication device is detected by a vehicle speed sensor for detecting the moving state of the moving object or a rotation sensor for detecting the rotation of the wheels. Since the detection signal from the means is manually received through the wireless communication device and detected on the wireless communication network side, the movement state of the wireless communication device can be detected without separately providing a dedicated movement detection sensor. .

According to a sixth aspect of the present invention, in the first aspect of the present invention, the movement state of the wireless communication device is determined based on a change in the reception intensity of a radio wave of communication performed with the wireless communication device. Is recognized as a change in the distance between the two,
Since the detection is performed on the wireless communication network side, the present invention can be implemented without providing a special configuration on the wireless communication device side.

According to the seventh aspect of the present invention, the movement state of the wireless communication device is determined by using a time alignment signal of communication used in a wireless telephone network or the like as a wireless communication network, and by changing a correction amount of the signal. Since the change, that is, the moving state is detected, the moving state of the wireless communication apparatus can be detected without providing a special configuration.

According to the invention of claim 8, in the invention of claim 1, communication between the wireless communication network and the wireless communication device is performed by W
-In the configuration performed by the CDMA method, the movement of the wireless communication device is detected by a change in positioning, so that the movement state of the wireless communication device can be detected without providing a special configuration.

According to the ninth aspect of the present invention, in each of the above-mentioned inventions, the wireless communication device is provided with a canceling means, and when the user receives a call specifying the hands-free communication mode from the wireless communication network, the user operates the vehicle or the like. When a response that is not in the hands-free communication mode is possible and the hands-free communication mode is not available, the designation of the hands-free communication mode can be canceled. If you do not want to communicate in the hands-free communication mode, such as when it is designated as the hands-free communication mode, you can cancel this and perform normal communication, ensuring safety and ease of use. It can be excellent.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment in which the present invention is applied to a mobile phone will be described below with reference to FIGS. FIG. 2 schematically shows the whole wireless communication system of the present invention. A mobile telephone network 1 as a wireless communication network has a large number of base stations 2a to 2a.
c, etc., are connected and mediate communication with the mobile phone 3 existing in the communication area of each of the base stations 2a to 2c, and also perform a communication mode designation operation as described later.

The mobile phone 3 can perform a call in a hands-free communication mode by operating a button (not shown) at the time of an incoming call or an outgoing call. The sound is output at such a level that the sound can be heard even when the ear is removed from the speaker. It should be noted that even when the hands-free communication mode at the time of incoming call is set, it is possible to return to the normal communication mode by operating a cancel switch (not shown).

The mobile phone 3 has, for example, a GPS (Global Positioning System) as a position detecting means in addition to a normal mobile phone function.
Positioning System) At least three (preferably four) PGSs are provided integrally with the device 4.
By receiving a signal from the satellite 5, it is possible to detect its own position on the earth. Then, when a position detection signal is obtained from the GPS receiver 4, the mobile phone 3 periodically transmits the signal to the nearest one of the base stations 2a to 2c as position data.

For example, when the user carrying the mobile phone 3 is moving while driving the automobile 6, the position detection signal of the GPS receiver 4 is changing every moment, and the position change signal per time is The moving state can be determined.

Next, the operation of the present embodiment will be described.
FIG. 1 is a flowchart showing a hands-free communication mode designation processing routine performed by the base stations g2a to 2c. The movement state is determined by communication with the mobile phone 3 side. FIGS. 3 to 5 are flowcharts showing communication processing on the mobile phone 3 side, showing a process of providing information necessary for determining a moving state and a communication processing according to designation of a hands-free communication mode.

Referring to FIG. 3, a description will be given of a position detection processing routine of the mobile phone 3 which is performed prior to the operation of determining the moving state of the base stations 2a to 2c. Mobile phone 3
Performs the position detection operation by the GPS receiver 4 as described above (step P1), and transmits the obtained position detection signal to the nearest base stations 2a to 2c (step P1).
2). This position detection processing routine is executed every elapse of a certain period of time (for example, every second) in the standby state.

In the base stations 2a to 2c, as shown in FIG. 1, in order to determine whether or not the mobile phone 3 present in its own communication area is in a moving state, first, the mobile phone 3 First, a position detection signal is received (step S1). Then, the moving speed is calculated from the received past position information of the mobile phone 3 (step S2). this is,
The moving speed is calculated by calculating the distance that the mobile phone 3 has moved during the period from the position detection signal received last time or before and dividing the distance by the moving time.

Thereafter, the base stations 2a to 2c determine whether the calculated moving speed corresponds to the moving speed of the vehicle (for example, 30 km / h or more), and if "YES", change the communication mode. The hands-free flag for designating is set on (step S4), and if "NO", the hands-free flag is set off (step S4).
5).

At this time, the base stations 2a to 2c determine whether or not the setting state of the hands-free flag has changed (step S6), that is, if the setting has changed from the state set in the previous processing. Then, a message as to whether or not to specify the hands-free communication mode is transmitted to the target mobile phone 3 (step S7). After this,
Returning to step S1, the above processing is repeatedly performed.

In the portable telephone 3, when a message is received in step S7, as shown in FIG. 4, a display corresponding to the content of the received message is performed (steps Q1 and Q2). ). For example, when a hands-free communication mode is specified, characters or symbols such as "hands-free" are displayed so that the user can recognize that the state has changed when the user sees it. It is.

Next, a processing routine at the time of an incoming call of the portable telephone 3 will be described with reference to FIG. Base stations 2a-2
When a call is received at the mobile phone 3 existing in its own communication area, c designates a communication mode according to whether the hands-free flag for the mobile phone 3 is on or off, and performs a call. For example, when it is determined that the mobile phone 3 is in a moving state and it is necessary to specify the hands-free communication mode, the calling is performed by preferentially specifying the hands-free communication mode.

Accordingly, in the mobile phone 3,
It is determined whether or not a hands-free communication mode is designated at the time of an incoming call (step R1), and if "YES", a hands-free communication mode is set (step R1).
2). In this state, ringing of the call is performed, and the operation waits until the hook key is operated (step R3). In this state, it is also determined whether or not the hands-free communication mode is canceled by the cancel switch (step R4).

When the user operates the hook key to receive an incoming call, the portable telephone 3 controls the telephone to perform a telephone call in the hands-free communication mode (step R5). When the call ends and the hook key is turned on, the apparatus returns to the standby state. If the cancel switch is operated by the user during the call ("YES" in step R4), the call is waited for the operation of the hook key (step R6) and the call is made in the normal communication mode. (Step R7).

If there is no designation of the hands-free communication mode from the base stations 2a to 2c at the time of an incoming call ("NO" in step R1), the mobile phone 3 jumps to step R6 and sets the hook key. Control is performed such that a call is made in a normal communication mode according to the operation.

According to this embodiment, the mobile station 3 is configured to determine the moving state on the side of the base stations 2a to 2c and to designate a call in the hands-free communication mode when receiving a call. During driving of a car or the like, it is possible to automatically receive a call in the hands-free communication mode designated by the regulation stations 2a to 2c regardless of the setting state of the mobile phone 3 at the time of call reception. This eliminates the need for the user to set the drive mode and the like and the setting of the hands-free communication mode each time, so that the security can be ensured and the usability can be improved.

In the above-described embodiment, a case has been described in which the cancel switch provided on the mobile phone 3 is provided as a dedicated one. However, the cancel switch may be configured to function also as another key.
In addition, the hands-free cancel function using the cancel switch is not limited to the cancel operation upon receiving an incoming call, and can set various cancel modes.

(Second Embodiment) FIG. 6 shows a second embodiment of the present invention.
This embodiment is different from the first embodiment in that a car navigation device 7 mounted on an automobile 6 instead of a GPS receiver 4 provided integrally with a mobile phone 3 as position detecting means. Is received by the mobile phone 8 and transmitted to the base stations 2a to 2c.

In this embodiment, the mobile phone 8 is provided with a communication interface that enables communication in the Bluetooth system, and performs communication with the car navigation device 7. As shown in the figure, the car navigation device 7 includes a main body 7a, a GPS receiver 7b as a moving body position detecting means, a display 7c, and a Bluetooth type communication interface 7d.

The car navigation device 7 has a main body 7a.
The current position and the position on the map are matched and displayed on the display 7c based on the position signal obtained by the GPS receiver 7b by a control circuit (not shown) provided at The calculated route is displayed, and the route guidance is provided to the user by display and voice guidance as the vehicle progresses.

When the user brings the mobile phone 8 into the automobile 6, the mobile phone 8 or the car navigation device 7 performs communication by the Bluetooth method to form a network (forms a piconet). The mobile phone 8 has a program incorporated therein so as to periodically request the car navigation device 7 to transmit a position detection signal detected by the GPS receiver 7b. When receiving the request signal from the mobile phone 8, the car navigation device 7 transmits a position detection signal to the mobile phone 8 in response to the request signal.

According to the second embodiment, the information on the current position of the mobile phone 8 is obtained by using the position detection signal of the GPS receiver 7b of the car navigation device 7 mounted on the automobile. Therefore, with a simple configuration that only provides a Bluetooth type communication interface on both sides, hands-free communication mode is performed by reliably obtaining a position detection signal and determining the movement state without performing troublesome work such as connecting cables. Can be specified.

It is to be noted that such a Bluetooth communication interface is expected to be standardly mounted on various devices in the future, and therefore, the configuration provided with the communication interface is special to achieve this function. It can be realized without becoming complicated.

(Third Embodiment) FIG. 7 shows a third embodiment of the present invention.
This embodiment is different from the second embodiment in that a car speed sensor 9 as a movement detecting means is used instead of the car navigation device 7 as a moving body position detecting means.
Is provided.

The vehicle speed sensor 9 detects the rotational speed of the shaft 6c between the differential gear connected to the wheels 6a and the transmission 6b.
Is arranged to detect the vehicle speed by inputting the detection signal. The vehicle speed sensor 9 is connected to a communication interface 10 for performing communication by the Bluetooth method, and performs communication with the mobile phone 8 in the same manner as described above.

According to the third embodiment, the mobile phone 8 receives the vehicle speed signal from the vehicle speed sensor 9 mounted on the automobile 6 and transmits the signal to the nearest base stations 2a to 2c. The moving state of the target mobile phone 8 can be determined on the 2a to 2c side, and the same effect as described above can be obtained.

In the above-described embodiment, the case where the vehicle speed sensor 9 is provided has been described. However, instead of the vehicle speed sensor 9, a configuration for detecting the number of rotations of the wheels may be used to determine the moving state of the mobile phone 8. Alternatively, the moving state of the vehicle may be detected and determined by an acceleration sensor or the like.

(Fourth Embodiment) FIG. 8 shows a fourth embodiment of the present invention.
This embodiment is different from the first embodiment in that the present invention is applied to a mobile phone 11 and base stations 12a to 12c that employ a W-CDMA communication system. In the communication according to the W-CDMA system, a signal for distance measurement is transmitted from each of the base stations 12a to 12c to the mobile phone 11 existing in its own communication area 13a to 13c, and the distance is detected by a response. Is available.

Using this distance detection function, the position of the target portable telephone 11 can be detected from the distance information detected by, for example, the three base stations 12a to 12c. By repeatedly executing the position detection processing at predetermined time intervals, the moving state of the target mobile phone 11 can be determined.

According to the fourth embodiment, the base stations 12a to 12c directly determine the moving state of the mobile phone 11 and transmit a message, and specify a hands-free communication mode when receiving a call. , The user is the mobile phone 1
Even if the user forgets to set 1 to the drive mode or the hands-free communication mode, the user can automatically talk in the hands-free communication mode while driving the car.

(Fifth Embodiment) FIG. 9 shows a fifth embodiment of the present invention.
This embodiment is different from the first embodiment in a method of determining the moving state of the mobile phone 3.
That is, the configuration in the present embodiment is the same as that of the GPS receiver 4.
This is a configuration that uses a mobile phone 3 that is not provided with a mobile phone. In this case, a normal TDMA system may be used,
A W-CDMA system according to the fourth embodiment may be used.

In this embodiment, on the side of the base stations 2a to 2c (or the base stations 12a to 12c), the mobile phone 3 (or the mobile phone 11) existing in the communication area is provided.
It is intended to determine the moving state from a change in the intensity of the signal received from the mobile terminal. Each of the base stations 2a to 2c first detects the level of a signal received from the target mobile phone 3 (step T1), and then determines the amount of change from the level of a received signal received last time or in the past. Calculate and obtain a temporal variation (step T2).

Each of the base stations 2a to 2c determines whether or not the obtained amount of change in the reception level corresponds to a moving state (step T3), and it is determined that the amount of change is rapidly changing and corresponds to the movement of an automobile. Is determined (step T4). If not, the process returns. When the mobile station determines the moving state in this way, the base stations 2a to 2c set the hands-free flag to ON (corresponding to step S4 in FIG. 1), and when not moving, set the hands-free flag to OFF ( This corresponds to step S5 in FIG. 1). The following operation is the same as that described above, and the description is omitted.

According to the fifth embodiment as well, the base stations 2a to 2c judge the moving state of the mobile phone 3 from the amount of change in the received signal level, and when the mobile station 3 is in the moving state, it automatically hands-free. Since it specifies the free communication mode,
A user-friendly function can be added without providing a special configuration.

(Sixth Embodiment) FIG. 10 shows a sixth embodiment of the present invention.
This embodiment is different from the fifth embodiment in a method of determining the moving state of the mobile phone 3.
That is, in this embodiment, the moving state is determined from the change amount of the time alignment amount instead of determining the moving state from the change amount of the reception level of the signal from the mobile phone 3.

The time alignment referred to here is a function generally performed in communication control of a mobile phone. In each of the base stations 2a to 2c, a reference timing (burst signal reception timing in the base station) is provided for each slot. Is to measure the phase difference between the received burst signal and the received burst signal, and specify the transmission timing to the mobile station (mobile phone) as an absolute value as a time alignment amount from the measurement result.

When determining the moving state, each of the base stations 2a to 2c starts the flowchart shown in FIG. 10, and first determines the time alignment amount (step W).
1) The difference from the previous or past time alignment amount is calculated to obtain the time change amount (step W2). Next, it is determined whether or not the calculated change amount of the time alignment amount corresponds to the moving state (step W3),
If "YES", the moving state is determined (step W
4) If “NO”, return as it is.

Thus, similarly to the fifth embodiment, the base stations 2a to 2c can determine the moving state of the mobile phone 3 from the change in the time alignment amount,
When the mobile device is in the moving state, the communication mode is automatically set to the hands-free communication mode, so that a user-friendly function can be added without providing a special configuration.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. In the above embodiment, the case where the present invention is applied to a mobile phone has been described. However, it is needless to say that the present invention can be applied to a car phone.

Although the moving state is determined by detecting the position by the position detecting means, it is sufficient if the position can not be measured, as long as the moving amount per time can be measured at least. It is possible to determine a moving state due to driving of a car or the like.

In the above embodiment, the case where the portable telephone 3 or 11 having the hands-free function integrally is used has been described. However, the present invention can be applied to a portable telephone in which a hands-free kit is separately connected. .

The cancel switch described in the first embodiment can have not only a cancel function at the time of an incoming call but also various functions as follows. For example, if you are not driving even if you are moving in a car, or if you are driving and you do not want to receive a hands-free call when you are traveling with another person, select the other party and make it hands-free. It is effective to provide it as an extended function to meet various needs such as canceling the telephone call itself in the mode of answering machine.

That is, a function of setting in advance so that hands-free operation can be canceled only once upon receiving a call is provided, or the designation of hands-free operation is canceled during a period set by setting a date and time or a period not set. You may do it. In addition, when a call is made a specified number of times (for example, three times), a call is automatically received in a hands-free manner, and a switch operation is performed during the call to cancel the hands-free and switch to a call in which a normal call can be made. You may be able to do. Furthermore, it is also possible to set to cancel the hands-free for the registered partner or for a person other than the registered partner.

In each of the above embodiments, when determining the moving state, only a steady driving state is assumed. For example, it is determined that the vehicle is stopped at a traffic light, or the vehicle is parked on a road shoulder or riding in a vehicle. In this case, it is possible to make a detailed judgment on the operation, and to set a more convenient function using a Bluetooth communication function.

Further, in the above embodiment, the setting of the hands-free communication mode is performed by displaying on the display, but it may be notified by voice or an announcement may be made to the calling party. You can also. Furthermore, when there is an inconvenience in the hands-free mode, a function that enables the user to select a mode of answering machine can be added.

[Brief description of the drawings]

FIG. 1 is a flowchart of a hands-free communication mode designation processing routine for a mobile phone in a base station according to a first embodiment of the present invention;

FIG. 2 is a configuration diagram of a system.

FIG. 3 is a flowchart of a position detection processing routine of the mobile phone.

FIG. 4 is a flowchart of a message display routine of the mobile phone.

FIG. 5 is a flowchart of an incoming call processing routine of the mobile phone.

FIG. 6 is a system configuration diagram of a mobile phone according to a second embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 6, showing a third embodiment of the present invention;

FIG. 8 is a view corresponding to FIG. 2, showing a fourth embodiment of the present invention;

FIG. 9 is a flowchart of a moving state determination processing routine according to a fifth embodiment of the present invention.

FIG. 10 is a view corresponding to FIG. 9, showing a sixth embodiment of the present invention;

[Explanation of symbols]

1 is a mobile communication network (wireless communication network), 2a to 2c, 12a to
12c is a base station, 3, 8, and 11 are mobile phones (wireless communication devices), 4 is a GPS receiver (position detecting means), 5 is a GP.
S satellite, 6 is an automobile (moving body), 7 is a car navigation device, 7b is a GPS receiver (moving body position detecting means), 7d and 10 are communication interfaces, and 9 is a vehicle speed sensor (moving detecting means).

Claims (9)

[Claims] In a wireless communication system configured to perform communication by connecting to a wireless communication network from a wireless communication device via a base station, when the wireless communication network detects a moving state of the wireless communication device, A wireless communication system for designating a wireless communication device to perform a hands-free communication mode preferentially. 2. The wireless communication system according to claim 1, wherein the wireless communication network transmits a movement state of the wireless communication device and a position detection signal of a position detection unit that moves together with the wireless communication device. A wireless communication system configured to receive the data through the network and to detect based on the movement amount. 3. The wireless communication system according to claim 2, wherein said position detecting means is a position sensor provided integrally with said wireless communication device. 4. The wireless communication system according to claim 2, wherein the position detecting means is a mobile object position detecting means mounted on the mobile object when the wireless communication device moves with the mobile object. A wireless communication system, comprising: 5. The wireless communication system according to claim 1, wherein the wireless communication network detects a movement state of the wireless communication device from a movement detection unit that detects a movement state of a moving object that moves with the wireless communication device. A wireless communication system configured to detect the detection signal by receiving the detection signal through the wireless communication device. 6. The wireless communication system according to claim 1, wherein the wireless communication network determines a moving state of the wireless communication device based on a change in reception strength of a radio wave of communication performed with the wireless communication device. A wireless communication system characterized by being configured to perform detection. 7. The wireless communication system according to claim 1, wherein the wireless communication network corrects a phase shift difference of a time alignment signal of communication performed between the wireless communication device and the wireless communication device. A wireless communication system configured to detect based on a change in an amount. 8. The wireless communication system according to claim 1, wherein the wireless communication network establishes communication with the wireless communication device by W.
−CDMA (Wideband-Code Division Multiple Acces)
s) A wireless communication system, wherein the wireless communication system is configured to perform movement by detecting a change in positioning. 9. The wireless communication system according to claim 1, wherein the wireless communication device cancels the designation when receiving a call specifying a hands-free communication mode from the wireless communication network. A wireless communication system comprising a canceling means capable of making a telephone call.