JPH10108263A - Radio communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow radio communication equipment itself to detect a mobile speed and to attain automatically any of automatic reply, automatic answering reply and incoming call transfer in the case that the communication equipment is moving at a high speed at the time of the incoming call. SOLUTION: A reception electric field strength detection section 3 measure a value of a received signal strength indicator(RSSI) that corresponds to a reception electric field strength of a radio channel at an interval of a prescribed time and delivers the measured value to a control section 5. The control section 5 converts the amount of fluctuation in the RSSI into a mobile speed of the radio communication equipment so as to discriminate whether a radio telephone set is moving at a high speed or a low speed. When the control section 5 discriminates that the radio telephone set is moving at a high speed, any of automatic reply, automatic answering reply and incoming call transfer is conducted automatically for an, incoming call.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication device for holding a response to an incoming call according to a moving speed.

[0002]

2. Description of the Related Art In recent years, accidents have frequently occurred due to lack of attention to driving while using a telephone while driving in an automobile, and therefore, it has been called for to prohibit the use of the telephone in the automobile.

[0003] Conventionally, when an incoming call is received during driving or at high speed, the driver is automatically given a response hold or answering machine even if he does not have a receiver. Has been prevented.

For example, Japanese Patent Application Laid-Open No. 2-280426 discloses that a traveling speed is detected by a vehicle speed sensor and a steering angular speed is detected by a turning angle sensor, and the obtained traveling speed, steering angular speed, and steering angular speed are positive and negative. Response hold device for a car telephone, which automatically holds a response when any one of the repetition times is greater than a threshold value, that is, when the vehicle speed is higher than a certain speed or when the steering wheel is turned over a certain amount or more, etc. Is described.

Further, Japanese Patent Application Laid-Open No. 2-65536 discloses that
An automobile telephone that automatically answers the answering machine when a vehicle speed detected by a vehicle speed sensor is higher than a predetermined speed and a state in which the receiver is not picked up for a certain period of time has been described.

Further, Japanese Patent Application Laid-Open No. 63-115440 discloses that, when a vehicle speed sensor determines that a vehicle is running and the number of call signal counters reaches a predetermined number, a response is automatically held. Is described.

[0007]

All of these problems occur in an automobile telephone fixed in a car, and when a vehicle speed detected by a vehicle speed sensor satisfies a predetermined condition, a response hold or an answering machine is automatically performed. Since a response is made, if there is an incoming call while driving, there is no safety problem in an automobile equipped with an automobile telephone. However, when the driver has a mobile phone, the vehicle speed sensor is not connected to the mobile phone, so that a response hold or the like cannot be performed.

[0008] Further, since the response is held and the recording / reproduction is performed based on the vehicle speed detected by the vehicle speed sensor, it takes time and effort to provide a connection cable, a connector, and the like from the vehicle speed sensor to the car telephone in the automobile. There is a problem of increased versatility.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is not to perform response hold control in accordance with a vehicle speed detected by a vehicle speed sensor in an automobile, but to respond to a moving speed detected by a wireless communication device itself. An object of the present invention is to provide a wireless communication device that automatically performs an automatic response, an answering machine response, a call transfer, and the like.

Another object of the present invention is to provide a wireless communication device capable of performing an automatic response or the like according to a moving speed without being limited to a car telephone.

[0011]

In order to achieve the above object, a radio communication device according to the present invention has a reception electric field intensity detection section for detecting the reception electric field intensity of a radio channel, and detects a fluctuation amount of the reception electric field intensity. Accordingly, it is determined whether the wireless communication device is moving at a low speed or at a high speed.

Whether the wireless communication device is moving at a low speed or at a high speed is determined by the difference between the value of the first received electric field intensity and the value of the second received electric field intensity after the lapse of a predetermined time and the predetermined value. It is determined based on the comparison result.

Whether the wireless communication device is moving at a low speed or at a high speed is determined based on a comparison result of a time value during which the received electric field intensity is lower than a predetermined received electric field intensity value and a predetermined time value. .

Whether the wireless communication device is moving at a low speed or at a high speed is determined based on a comparison result between a time value at which the received field strength exceeds a predetermined received field strength value and a predetermined time value. .

Whether the wireless communication device is moving at a low speed or at a high speed is determined based on a comparison result of a fluctuation period of the received electric field strength and a predetermined value.

Further, when one of a plurality of determination values obtained within a predetermined time is moving at a high speed, the radio communication device determines that the mobile station is moving at a high speed.

The wireless communication device of the present invention automatically responds to an incoming call when it is determined that the wireless communication device is moving at a high speed.

Further, when it is determined that the radio communication device is moving at a high speed at the time of an incoming call, it is possible to set in advance whether to hold, answer, or answer the call.

On the other hand, the wireless communication device according to the present invention determines whether to perform an incoming call notification or an automatic response in accordance with the amount of fluctuation in the received electric field strength.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the radio communication device according to the present invention will be described with reference to the drawings. FIG.
FIG. 2 is a block diagram showing a circuit configuration of a wireless communication device, preferably a mobile phone, according to the present embodiment.

In FIG. 1, a radio signal from a base station (not shown) is received by a radio unit 2 via an antenna 1, converted into a low-frequency signal, and transmitted to a control unit 5. Thereafter, the control unit 5 generates a ring tone from the speaker 11 via the ring tone generation unit 10, and at the same time, a display indicating that the call has been received is displayed on the display unit 4. In response to the incoming call notification, the user of the mobile phone can talk with the other party using the microphone 7 and the receiver 8 connected to the control unit 5 via the voice processing unit 6. The user can select an incoming call notification method such as sound, vibration, light or the like by using the key input circuit 9. In addition, one of the ringtone and the display may be used as an incoming call notification.

As described above, the mobile telephone is connected to the base station via a wireless line, and is configured to be able to communicate while moving. During the movement, the reception electric field strength of the signal from the base station is reduced.
As shown in FIG. 2, it fluctuates with time due to fading. In FIG. 2, the vertical axis represents the received electric field strength, and the horizontal axis represents time. This fading cycle changes in a short cycle during high-speed movement, and changes in a long cycle during low-speed movement.
In addition, when the moving speed is high, the size of the peaks and valleys of fading increases, and when the moving speed is low, the size decreases. During high-speed movement, fading in which valleys are particularly deep occurs.

The reception electric field strength detection unit 3 of the portable telephone sets an RSSI (Receive) value that takes a value corresponding to the reception electric field strength.
ed Signal Strength Indica
tor) is measured at predetermined time intervals, for example, at intervals of 5 milliseconds, and the measured value is transmitted to the control unit 5. The control unit 5 controls the RSSI measured at 5 ms intervals.
The value difference, that is, a shown in FIG. 2 is calculated as the RSSI variation, and the RSSI stored in the control unit 5 in advance is calculated.
The amount of change in RSSI is converted into a speed value using a conversion table from the amount of change in the moving speed to the moving speed. The conversion table stores numerical values that increase the moving speed of the mobile phone when the RSSI fluctuation amount is large, and the numerical values are determined in advance by experiments or the like.

As a method of determining the moving speed, the following method is used instead of using the above-described RSSI variation itself.

For example, within a predetermined time, R
Among the plurality of calculated values of the moving speed obtained from the variation of the SSI, the fastest value is set as the moving speed of the mobile phone.

Alternatively, in order to shorten the calculation time of the moving speed and speed up the processing, the magnitude of the RSSI variation is compared with a predetermined value. It is determined that it is moving at high speed and RSS
If the fluctuation amount of I is smaller than a predetermined value, it may be determined that the mobile phone is moving at a low speed, that is, the speed may be determined in binary. In this case, a predetermined number of times or a predetermined time
It is preferable to accumulate the fluctuation amounts of the speeds and then convert them into speed values. According to the method of integrating the RSSI fluctuation amount,
When one of the fluctuation amounts of the RSSI measured several times is large, that is, when the valley of fading is deep, the integrated value becomes large.

If at least one of a plurality of judgment values obtained from the RSSI fluctuation amount within a predetermined time is moving at a high speed, the portable telephone can be judged to be moving at a high speed. .

Further, the moving speed of the portable telephone can be calculated by measuring the time of the peak or valley of the fading. For example, in FIG. 2, the time (t1) when the RSSI value falls below the predetermined value and the time (t2) when the RSSI value exceeds the predetermined value, or the fluctuation period of the RSSI value (t1 + t2) are measured, and the control unit The moving speed of the mobile phone is calculated from the conversion table from the RSSI change time to the moving speed stored in the. This conversion table shows that the fluctuation period of RSSI is short, that is, t1 and t1.
2 or a numerical value that makes the moving speed of the mobile phone faster when t1 + t2 is short.

Alternatively, among the plurality of calculated moving speeds obtained from the RSSI fluctuation period within a predetermined time, the fastest value may be used as the moving speed of the portable telephone.

As described above, in order to reduce the moving speed determination time and speed up the processing, t1 and t2 or t1 + t2 are compared in magnitude with a predetermined value, and the fluctuation period of the RSSI becomes larger than the predetermined value. If the mobile phone is moving at a low speed, it is determined that the mobile phone is moving at a high speed. If the fluctuation period of the RSSI is longer than a predetermined value, the mobile phone is determined to be moving at a low speed.

Further, when at least one of the plurality of determination values obtained from the RSSI fluctuation cycle within a predetermined time is moving at a high speed, it is possible to determine that the mobile phone is moving at a high speed. .

As described above, according to the present invention, when it is determined that the mobile phone is moving at high speed by detecting the moving speed according to the received electric field strength, the automatic response control such as answer hold, answering machine response, transfer, etc. is performed for the incoming call. .

Next, the operation of the wireless communication device shown in FIG. 1 will be described with reference to the flowchart in FIG.

The mobile phone normally stands by in a standby state (step 301) until there is an incoming call to itself (step 302). If there is an incoming call to the self, the receiving electric field intensity detecting unit 3 measures the moving speed from the receiving electric field intensity, that is, the variation amount or the variation period of the RSSI (step 30).
3) The control unit 5 determines whether it is moving at high speed or at low speed (step 304). If it is determined that the vehicle is moving at high speed, a response holding operation is automatically performed (step 305). Preferably, a display indicating that a response hold operation is being performed is displayed on the display unit 4 of the mobile phone, a response hold message indicating that the call cannot be answered is sent to the caller, and the telephone line is held in a connected state. Is done. Thereafter, when it is determined that the vehicle is moving at low speed (step 3
At 06), a ringtone is sounded by the speaker 11 via the ringtone generation unit 10 (step 307), and when the user performs an operation of answering the incoming call (step 308), a call is started (step 309).

On the other hand, if it is not determined that the vehicle is moving at a low speed within a predetermined time after receiving the call, for example, within 5 minutes (step 311), the process is terminated (step 3).
10). In this case, for example, a message may be prompted to the other party, the message may be recorded, and the process may end. Also,
If you can respond within a certain time, for example,
When another person answers (step 312), an operation of releasing the answer hold is performed (step 313), so that a call is started (step 309). When the call is finished (step 310), the system returns to the incoming call waiting state.

In the embodiment shown in FIG. 3, the moving speed of the mobile phone is calculated after the incoming call. However, the moving speed is always calculated from the RSSI, and the mobile phone is moving at a high speed or at a low speed using the speed value immediately before the incoming call. It can also be configured to determine whether it is inside.

Next, a radio communication device according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a flowchart showing the operation of the wireless communication device according to the present embodiment.

The portable telephone normally stands by in a standby state until there is an incoming call to itself (step 401). When there is an incoming call to itself (step 402), the received electric field intensity detecting unit 3 measures the moving speed from the received electric field intensity, that is, the RSSI fluctuation amount or fluctuation period (step 40).
3) The control unit 5 determines whether the vehicle is moving at high speed or at low speed (step 404). If it is determined that the mobile terminal is moving at high speed, it is determined whether the preset operation during high speed movement is an answering machine response operation or a call forwarding operation (step 405), and the answering machine response operation (step 40) is performed.
6) Or perform a call transfer operation (step 409).

For example, when performing an answering machine response operation,
A message to answer the answering machine is transmitted to the caller (step 406), and the message from the caller is recorded (step 407). On the other hand, when performing the call transfer operation, a message indicating that the call is to be transferred is transmitted to the caller (step 409), and the base station is instructed to transfer the call message to a predetermined transfer destination (step 410). ). When the answering machine response operation or the incoming call transfer operation is completed (steps 408 and 411), the system returns to the incoming call waiting state.

On the other hand, if it is determined in step 404 that the vehicle is moving at a low speed, the ringtone generation unit 10
A ringing tone is sounded by the speaker 11 via (step 412), and when the user performs an operation for answering the incoming call (step 413), a call is started (step 414). When the call is finished (step 415), the system returns to the incoming call waiting state.

In the embodiment shown in FIG. 4, the moving speed of the mobile phone is calculated after the incoming call. However, the moving speed is always calculated from the RSSI, and the mobile phone is moving at a high speed or at a low speed using the speed value immediately before the incoming call. It can also be configured to determine whether it is inside.

A radio communication device according to the third embodiment of the present invention will be described with reference to the drawings. FIG.
5 is a flowchart showing an operation of the wireless communication device according to the present embodiment.

The portable telephone normally stands by in a standby state until there is an incoming call to itself (step 501). In this standby state, the reception electric field intensity detector 3 detects the reception electric field intensity,
That is, the moving speed is measured from the RSSI fluctuation amount or the fluctuation period (step 502), and the control unit 5 determines whether the vehicle is moving at high speed or at low speed (step 50).
3). If it is determined that the vehicle is moving at a high speed, the mobile terminal further stands by in a standby state (step 510), and confirms whether there is an incoming call to itself (step 511). If there is no incoming call to itself, it is determined again whether the vehicle is moving at high speed or at low speed in the standby state (step 501) (step 502). If there is an incoming call to itself, it is determined whether the preset operation during high-speed movement is an answering machine response operation or a call forwarding operation (step 512), and an answering machine response operation (step 513) or call forwarding is performed. The operation (step 516) is performed.

For example, when performing an answering machine response operation,
A message to the effect that the answering machine responds to the caller is transmitted (step 513), and the message from the caller is recorded (step 514). On the other hand, when performing the call transfer operation, a message indicating that the call is to be transferred is transmitted to the caller (step 516), and the base station is instructed to transfer the call message to a predetermined transfer destination (step 517). ). When the answering machine response operation or the call forwarding operation is completed (steps 515 and 518), the system returns to the call waiting state.

On the other hand, if it is determined in step 503 that the vehicle is moving at a low speed, the system further stands by in a standby state (step 504), and confirms whether there is an incoming call to itself (step 505). If there is no incoming call to itself, it is determined again whether the vehicle is moving at high speed or at low speed in the standby state (step 501) (step 50).
2). If there is an incoming call to the self, the ring tone generation unit 10
A ring tone is sounded by the speaker 11 via the terminal (step 506), and when the user performs an operation for answering the incoming call (step 507), a call is started (step 508). When the call is finished (step 509), the system returns to the incoming call waiting state.

The wireless communication device of the present invention is not limited to the above embodiment. For example, if the amount of fluctuation of the RSSI is large at least once within a first predetermined time before receiving the call, for example, three minutes, it is determined that the mobile phone is moving at high speed.
Thereafter, for a second predetermined time, for example, once every 5 minutes, the RS
If the fluctuation amount of SI does not increase, it can be determined that the mobile phone is moving at low speed.

When the user is in a train or taxi, that is, when the user can answer a call without driving, a response holding operation, an answering machine response operation and an incoming call transfer operation are automatically performed. Since there is no need, the user may set in advance whether to perform a normal incoming call response or to perform a response holding operation or the like.

[0048]

As described above, according to the wireless communication device of the present invention, since the wireless communication device itself detects the moving speed, the distance between the vehicle telephone mounted in the vehicle and the vehicle speed sensor is reduced. There is no need to provide connection cables, connectors, etc., which saves time and effort, is sufficiently effective in terms of cost, and is very versatile.

Further, since the wireless communication device of the present invention can be used regardless of whether or not an automobile telephone is mounted on an automobile, an automobile accident caused by the use of a portable telephone, which is currently attracting attention, can be anticipated. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration of a mobile phone according to the present invention.

FIG. 2 Variation in reception sensitivity of mobile phone (fading)
FIG.

FIG. 3 is a flowchart showing an operation of the mobile phone according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the mobile phone according to the second embodiment of the present invention.

FIG. 5 is a flowchart showing an operation of the mobile phone according to the third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Radio part 3 Received electric field strength detection part 4 Display part 5 Control part 6 Audio processing part 7 Microphone 8 Receiver 9 Key input circuit 10 Ring tone generation part 11 Speaker

Claims (9)

[Claims] 1. A wireless communication device having a reception electric field intensity detection unit for detecting an electric field intensity of a radio channel from a base station, wherein the radio communication device is moving at a low speed in accordance with a variation amount of the reception electric field intensity. A wireless communication device for determining whether the vehicle is moving at high speed. And determining whether the wireless communication device is moving at a low speed or at a high speed by determining a difference between a value of a first received electric field intensity and a value of a second received electric field intensity after a lapse of a predetermined time by a predetermined value. The wireless communication device according to claim 1, wherein the determination is made based on a comparison result with the value. 3. A determination as to whether the wireless communication device is moving at a low speed or at a high speed, based on a comparison result between a time value during which the received electric field intensity falls below a predetermined received electric field intensity value and a predetermined time value. The wireless communication device according to claim 1, wherein: 4. A determination as to whether the wireless communication device is moving at a low speed or at a high speed based on a comparison result between a time value at which the received field strength exceeds a predetermined received field strength value and a predetermined time value. The wireless communication device according to claim 1, wherein: 5. The radio communication apparatus according to claim 1, wherein whether the radio communication device is moving at a low speed or at a high speed is determined based on a comparison result between a fluctuation period of the reception electric field strength and a predetermined value. The wireless communication device as described. 6. The wireless communication device according to claim 2, wherein, when one of a plurality of determination values obtained within a predetermined time is moving at a high speed, the wireless communication device determines that the wireless communication is moving at a high speed. The wireless communication device according to claim 3, 4, or 5. 7. The system according to claim 2, wherein when it is determined that the radio communication device is moving at a high speed when the radio communication device receives an incoming call, an automatic response is made to the incoming call. The wireless communication device according to claim 4, 5, or 6. 8. When an incoming call to the wireless communication device is made, when it is determined that the wireless communication device is moving at high speed, any one of an incoming call response, a response hold, an answering machine response, and a transfer is performed for the incoming call. The wireless communication device according to claim 7, wherein the setting is performed in advance. 9. A wireless communication device having a reception electric field strength detection section for detecting a reception electric field strength of a radio channel from a base station, whether an incoming call is notified or an automatic response is made according to the fluctuation amount of the reception electric field strength. A wireless communication device characterized by determining.