JP2005278117A - Radio communication terminal and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a demand of an excessive instrument or a load on a terminal in a technology for measuring a position of the terminal by a GPS system, calculating moving speed, and switching an operation mode while the operation mode of the radio communication terminal can be controlled automatically according to the circumstances. <P>SOLUTION: An operation mode(especially call termination alarm operation) is controlled by using an electric field level of a received wave and positional information which are measured and held by a radio communication terminal in normal operation. When the terminal is located at a previously set position and a variance speed of the electric field level is larger than a prescribed value, it is determined that the terminal moves at high speed by a train or a vehicle. As a result, the operation mode of the terminal is switched. As an example, the call termination alarm operation is changed from an incoming call tone to a vibration mode. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wireless communication terminal that performs wireless communication with a base station.

  As mobile phones become widespread, problems related to ringtones have attracted attention. In other words, in environments such as concert halls and theaters where a quiet environment must be maintained, and inside trains, mobile phone users turn off the power of the mobile phone or set the manner mode to notify incoming calls by vibration. Is required to. For this reason, a method is known in which time is set in advance in the mobile phone and the manner mode is set within the time. However, this method requires the user to input the set time. Even if it is desired to generate a ring tone, the manner mode may be entered.

  On the other hand, Patent Document 1 discloses a technique in which a mobile terminal switches its own terminal to a predetermined function from the terminal moving speed. This terminal measures the position of the terminal using a GPS system, and calculates the moving speed from the moving distance and the required time. As a result, when the moving speed is high, it is determined that the terminal is in a vehicle traveling at a constant speed, and the incoming mode is switched to the manner mode.

JP 2003-087400 A (FIGS. 1 and 2)

  In the terminal disclosed in Patent Document 1, the position must be measured from the GPS system each time the terminal moves to some extent. This almost always requires access to the GPS system. This processing increases the burden on the control unit of the terminal and consumes an extra battery in the terminal as compared with normal operation. Moreover, it is necessary to install a GPS transmission / reception part in a terminal separately.

  An object of the present invention is to solve the above-described problems and to provide a wireless terminal capable of efficiently switching the incoming mode of a terminal under a predetermined condition without imposing a heavy load on the wireless communication terminal and a control method thereof. And

  A wireless communication terminal of the present invention that achieves the object is a wireless communication terminal that performs wireless communication with a base station, and includes a position information extraction circuit, an electric field level extraction circuit that extracts an electric field level of a received radio wave, and the electric field level. An electric field level comparison circuit that calculates a change rate of the value, and a control unit that controls the operation mode of the terminal based on the change rate of the electric field level value. Another wireless communication terminal includes a position information extraction circuit, a transmission level storage circuit that holds the electric field level of the transmission radio wave of the terminal specified by the base station, and a transmission level comparison circuit that calculates the change rate of the electric field level value. And a control unit for controlling the operation mode of the terminal based on the change rate of the electric field level value. These terminals can be provided with a memory that holds the operation mode of the wireless communication terminal. The electric field level extraction circuit sends the electric field level to the electric field level comparison circuit when the electric field level fluctuates and when the wireless communication terminal is started up. The control unit can switch the incoming mode of the terminal to a predetermined setting when the wireless communication terminal exists at a predetermined position and the change rate of the electric field level is equal to or higher than a predetermined value. The incoming call mode after switching is, for example, a manner mode in which an incoming call is notified by vibration. After controlling the operation mode, the control unit returns the operation mode of the wireless communication terminal to the state before the control when at least one of the position of the wireless communication terminal and the change rate of the radio wave level does not meet the predetermined condition. Can do.

  The method for controlling a wireless communication terminal of the present invention switches the operation mode of the wireless communication terminal based on the intensity change rate of the radio wave used for the wireless communication. The intensity of this radio wave is the electric field level of one of the radio waves received or transmitted by the wireless terminal. In addition, when the wireless communication terminal exists at a predetermined position and the radio wave intensity change rate is equal to or higher than a predetermined value, the operation mode of the wireless communication terminal can be switched. After the switching, the incoming call notification mode can be set to vibration notification. In addition, after the control of the operation mode, when at least one of the position of the wireless communication terminal and the intensity change rate of the radio wave does not meet the predetermined condition, the operation mode of the wireless communication terminal can be returned to the state before the control.

  According to the above wireless communication terminal and its control method, the terminal uses the incoming signal strength and the transmitted signal strength that the terminal holds in normal operation. The mode can be changed automatically.

  FIG. 1 is a block diagram showing an embodiment of a wireless communication terminal of the present invention. The antenna 1 receives position information transmitted from a base station that is currently established in synchronization. The radio unit 2 modulates and demodulates information with the base station via the antenna 1 and transmits / receives it. The position information extraction circuit 3 extracts position information transmitted from the base station from various information received by the terminal via the wireless unit 2 and outputs the position information to the control unit (CPU) 6. The electric field level extraction circuit 4 receives the radio wave received by the antenna 1 via the wireless unit 2, calculates the electric field level, and outputs the result to the electric field level comparison circuit 5 at a predetermined time interval. The electric field level extraction circuit 4 can output the electric field level when the electric field level at the start-up of the wireless portable terminal and the electric field level fluctuate by a predetermined value. The predetermined value can be set to an arbitrary value by the user. The electric field level comparison circuit 5 receives the electric field level from the electric field level extraction circuit 4 and holds the time and level. The circuit 5 uses this information to calculate the rate of change of the electric field level value. The calculation is performed by dividing the fluctuation of the electric field level by the time from the time of receiving the previous electric field level value to the time of receiving the current electric field level value. The electric field level comparison circuit 5 holds a predetermined set value relating to the moving speed of the wireless portable terminal, and notifies the control unit (CPU) 6 when the calculation result is equal to or higher than the set value. The user can set an arbitrary value as the setting value.

  Here, the memory will be described. The position information memory 7 holds position information set by the user. This position is a position or a region where an incoming call notification to the terminal is to be made, for example, by vibration. The device state control memory 8 stores a mode (or setting data or command) of a mode in which the terminal should be set, for example, the manner mode (vibration mode) when a predetermined condition is satisfied. The state memory 9 holds the current operation mode of the terminal set by the user.

  When receiving a notification from the electric field level comparison circuit 5, the control unit (CPU) 6 determines whether the current position extracted by the position information extraction circuit 3 matches the position information in the position information memory 7. When the position information matches, the control unit (CPU) 6 transitions the setting of the terminal to the state set in the device state control memory 8. Conversely, if the position information does not match, the state (operation mode) stored in the state memory 9 is set in the terminal.

  The control unit 6 can include one or more of the functions of the position information extraction circuit 3, the electric field level extraction circuit 4, and the electric field level comparison circuit 5. The three memories can be formed in one memory. The wireless communication terminal further includes a display unit 10, an operation unit 11 such as a keyboard, and a timer 12. The time data output from the timer 12 is used for operations in the electric field level extraction circuit 4, the electric field level comparison circuit 5, and the like.

  FIG. 2 is a diagram for explaining the principle of the present invention. Here, the reception electric field level is simply expressed in three stages of a strong electric field, a medium electric field, and a weak electric field. When the wireless communication terminal is in the position of a weak electric field, if the speed at which the electric field level changes to a medium electric field and a strong electric field is high, the wireless portable terminal can be regarded as moving at high speed. Conversely, if the user stays in an environment with a weak electric field for a long time or if the speed of changing to a medium electric field or strong electric field is slow, the user holding the wireless communication terminal can be regarded as moving at a low speed such as walking. . In the electric field level comparison circuit 5 of the wireless communication terminal, a value of the change rate of the electric field level that can be regarded as high-speed movement such as a train is set.

  FIG. 3 is a flowchart showing the operation of the present invention. When the power of the wireless communication terminal is turned on (step 300), the terminal enters a standby state (step 301). The control unit 6 sets the operation mode at that time (for example, incoming call notification by ringing tone) in the state memory 9 (step 302). Next, it is determined whether or not the data set by the user exists in the device state control memory 8 (step 303). If there is no data in the memory 8, the terminal returns to the standby state. If there is data in the memory 8, the position information extraction circuit 3 extracts the current position information from the received data of the wireless unit 2 (step 304). Further, the control unit (CPU) 6 compares the extracted current position information with the position information set in the position information memory 7 (step 305). If the information does not match, the terminal returns to the standby state. When the information matches, the electric field level comparison circuit 5 acquires the information via the wireless unit 2 and the electric field level extraction circuit 4, and compares it with the held electric field level value (step 306). Subsequently, the electric field level comparison circuit 5 calculates the change rate of the electric field level (step 307). If the change rate is less than the predetermined set value, the terminal returns to the standby state. When the change speed is equal to or higher than the set value, the electric field level comparison circuit 5 outputs the result to the control unit (CPU) 6. The control unit 6 sets the terminal in a state (vibration mode) set in the device state control memory 8 (step 308).

  FIG. 4 is a flowchart relating to the operation after switching the operation mode. In the state after the setting switching (step 400), the wireless portable terminal extracts the current position information from the received data of the wireless unit 2 by the position information extraction circuit 3 (step 401). The control unit (CPU) 6 compares the extracted current position information with the position information set in the position information memory 7 (step 402). If there is no match as a result of the comparison, it is not necessary to set the vibration mode, so the operation returns to the operation mode stored in the state memory 9 (for example, a notification operation by a ringing tone) (step 405). If the comparison results match, the control unit (CPU) 6 controls the terminal as follows. The electric field level extraction circuit 4 extracts the electric field level (step 403), and from this electric field level, the electric field level comparison circuit 5 outputs the result of calculation and determination (step 404) of the change rate of the electric field level. The control unit (CPU) 6 receives this result and controls the terminal. If the speed is less than the set value, the control unit (CPU) 6 returns to the operation mode stored in the state memory 9 as described above (step 405). maintain.

  FIG. 5 shows another example of the wireless communication terminal of the present invention. This terminal includes a self-transmission level storage circuit 13 instead of the electric field level extraction circuit 4, and a self-transmission level comparison circuit 14 instead of the electric field level comparison circuit 5. In this terminal, the operation mode of the terminal is switched depending on the change rate of the transmission level of the radio wave transmitted by the terminal itself. The transmission level of the wireless portable terminal is designated by the base station side. If the reception level of the radio wave received by the terminal is strong, the transmission level of the radio wave transmitted to the base station is low, and if the reception level is weak, the transmission level to the base station is designated high. The self-transmission level storage circuit 13 stores the electric field level designated by the base station. The self-transmission level storage circuit 13 sends the level to the self-transmission level comparison circuit 14 according to the fluctuation of the transmission level. The self-transmission level comparison circuit 14 calculates the change rate of the transmission level and sends the result to the control unit (CPU) 6. Other configurations and operations are the same as those in the above example.

  Note that the above-described example describes an operation example in which even when the terminal is in a preset position, if the terminal does not have a predetermined electric field level change speed, the operation returns to the neglected operation mode with the default ringtone. However, as another operation, the user of the terminal can be set to always switch the terminal (that is, to be in a notification operation mode by vibration) when the terminal is in a preset position.

  FIG. 6 shows an example in which the electric field level is divided into five blocks. The electric field level extraction circuit 4 or the self-transmission level storage circuit 13 sends the level value to the electric field level comparison circuit 5 or the self-transmission level comparison circuit 14 when the level block to which the electric field level or the transmission level belongs changes. The electric field level comparison circuit 5 or the self-transmission level comparison circuit 14 determines that the wireless portable terminal is high-speed if the change speed when the block to which the level value changes is, for example, level 1 → level 2 → level 3 or more. Consider moving. On the other hand, if it is less than the set value or stays within the same level block, the terminal is considered to be moving at low speed or not moving. The wireless communication terminal of the present invention can operate based on the control as described above.

The block diagram which shows the structural example of the radio | wireless communication terminal of this invention. The figure which shows the principle of operation of this invention. The flowchart which shows the operation example of the radio | wireless communication terminal of this invention. The flowchart which shows the operation example of the radio | wireless communication terminal of this invention. The block diagram which shows the other structural example of the radio | wireless communication terminal of this invention. The block diagram which shows the further another structural example of an electronic circuit. The figure which classified the electric field level into the block regarding the operation example of this invention.

Explanation of symbols

2 Radio section 3 Position information extraction circuit 4 Electric field level extraction circuit 5 Electric field level comparison circuit 6 Control section (CPU)
13 Self-transmission level memory circuit 14 Self-transmission level comparison circuit

Claims (17)

A wireless communication terminal that performs wireless communication with a base station, a position information extraction circuit, an electric field level extraction circuit that extracts an electric field level of a received radio wave, an electric field level comparison circuit that calculates a change rate of the electric field level value, A wireless communication terminal comprising: a control unit that controls an operation mode of the terminal based on a change rate of the electric field level value. The wireless communication terminal according to claim 1, further comprising a memory that holds an operation mode. The wireless communication terminal according to claim 1, wherein the electric field level extraction circuit sends the electric field level to the electric field level comparison circuit when the electric field level fluctuates and when the wireless communication terminal is started up. The wireless communication terminal according to claim 1, wherein the control unit switches the incoming mode of the terminal to a predetermined setting when the wireless communication terminal exists at a predetermined position and the change rate of the electric field level is equal to or higher than a predetermined value. A wireless communication terminal that performs wireless communication with a base station, a position information extraction circuit, a transmission level storage circuit that holds an electric field level of a transmission radio wave of the terminal specified by the base station, and a change rate of the electric field level value A wireless communication terminal comprising: a transmission level comparison circuit for calculating; and a control unit that controls an operation mode of the terminal based on a change rate of the electric field level value. The wireless communication terminal according to claim 5, further comprising a memory that holds an operation mode. 6. The wireless communication terminal according to claim 5, wherein the transmission level storage circuit sends the transmission electric field level to the transmission level comparison circuit when the electric field level of the transmission radio wave fluctuates and when the wireless communication terminal is started up. 6. The wireless communication terminal according to claim 5, wherein the control unit switches the incoming mode of the terminal to a predetermined setting when the wireless communication terminal is present at a predetermined position and the change rate of the electric field level of the transmission radio wave is equal to or higher than a predetermined value. . The wireless communication terminal according to claim 2 or 6, wherein the memory stores information related to a position where the wireless communication terminal should be switched to a predetermined operation mode. The wireless communication terminal according to claim 2 or 6, wherein the operation mode is an operation mode before and after switching of the mode. The wireless communication terminal according to claim 10, wherein the operation mode after switching is an operation mode in which incoming call notification is performed by vibration. The control unit, after controlling the operation mode, when at least one of the position of the wireless communication terminal and the change rate of the radio wave level does not meet a predetermined condition, the operation mode of the wireless communication terminal before the control The wireless communication terminal according to claim 1 or 5, wherein A method of controlling a wireless communication terminal that performs wireless communication with a base station,
A control method for a wireless communication terminal, wherein the operation mode of the wireless communication terminal is switched based on an intensity change rate of a radio wave used for the wireless communication. The method of controlling a radio communication terminal according to claim 13, wherein the intensity of the radio wave is an electric field level of one of radio waves received or transmitted by the radio communication terminal. The method of controlling a wireless communication terminal according to claim 13 or 14, wherein when the wireless communication terminal is located at a predetermined position and an intensity change rate of the radio wave is a predetermined value or more, the operation mode of the wireless communication terminal is switched. The radio communication terminal control method according to claim 15, wherein the operation mode is an incoming call notification mode, and the incoming call notification is performed by vibration after the switching. 14. After the switching of the incoming mode, when at least one of the position of the wireless communication terminal and the intensity change rate of radio waves does not meet a predetermined condition, the incoming mode of the wireless communication terminal is returned to the state before the change. 17. A method for controlling a wireless communication terminal according to 1 of 16.

Images