JP4926876B2 - Wireless terminal device - Google Patents

Description

  The present invention provides a mobile phone or the like that performs location information positioning when a request for location information occurs within a predetermined time after an emergency call is made to the police or fire department. The present invention relates to a wireless terminal device.

In Japan, the location where an emergency call was made when an emergency call was made to a wireless terminal device such as a mobile phone in accordance with a ministerial ordinance (effective on April 1, 2007) that amends part of the rules for business telecommunications equipment It is required to have a function of notifying (location information) to an emergency organization.
In order to realize this function, a method has been proposed in which GPS (Global Positioning System) positioning is performed according to a request from an emergency organization at the time of an emergency call, and the positioning result (position information) is notified. Also included is a method of performing GPS positioning by receiving a location information positioning request from an emergency organization even after the emergency call is finished.

FIG. 9 shows a system configuration example of a conventional position information acquisition system.
In the position information acquisition system of FIG. 9, a mobile phone 91 is connected to an emergency organization such as a police command board 93 or a service organization information table 94 via a mobile communication network 92. The emergency organization is a user (mobile phone 91). ) Receives a voice emergency call (outgoing call) from the position report server 95 to receive the position information of the corresponding user.
Specifically, each user has a unique HLR (Home Location Register), and access to the transmission information of the user is aggregated in the HLR.

On the other hand, a patent application has been filed for the emergency call function described above. For example, when a time set by the user has elapsed during an emergency call, an emergency situation is determined and an e-mail is sent to the specified address. (For example, refer to Patent Document 1), or a method for determining whether or not an emergency situation occurs when the wireless terminal device is turned off, and notifying position information by e-mail (for example, refer to Patent Document 2). Are known. Each of the above-mentioned patent applications has a mechanism for notifying information by e-mail to a designated address.
JP 2005-18202 A JP 2007-36996 A

  By the way, in carrying out the above-mentioned GPS positioning, (1) during the emergency call, a GPS positioning request is received from an emergency organization (hereinafter referred to as a PSAP: Public Safety Answering Point), and the radio received The terminal device side reports the positioning result to the emergency call center during the call, or (2) the wireless terminal device side that receives the location information positioning request call from the emergency call center within a specific time after the emergency call ends. A method is known in which a dedicated service option connection is made and a positioning result is transmitted during the connection.

  However, according to the method (1), if a call disconnection or a user end call during GPS positioning during an emergency call is performed, the GPS positioning is stopped. Further, according to the method (2), even if the location information positioning request is received from the emergency call center after the emergency call is finished, the wireless terminal device cannot receive the incoming call due to the radio wave environment or the like. Does not perform GPS positioning. In this case, there is a possibility that the location information notification function at the time of an emergency call specified by a ministerial ordinance cannot be satisfied.

  On the other hand, the network side device including the emergency call center has a function of determining the base station where the terminal that made the emergency call is located by performing sector ID positioning at the time of emergency call. However, sector ID positioning and GPS positioning differ greatly in positioning accuracy (GPS positioning is several meters to 15 meters, sector ID positioning is several hundred meters to 10 km), and the location information obtained by sector ID positioning is The location information was not satisfactory.

  It is an object of the present invention to provide a wireless terminal device capable of transmitting position information as much as possible even when reception of a positioning request message after an emergency call fails in an unstable radio wave environment.

  In order to solve the above-described problem, the wireless terminal device of the present invention has a communication unit, and when the communication unit makes an emergency call to a specific telephone number, a location information request message based on the emergency call is sent. A wireless terminal device that measures position information when received by the communication unit within a first time after making the emergency call, and receives the position information request message after making the emergency call A timer monitoring unit that monitors whether or not the time that has elapsed without reaching a second time that is longer than the first time, and when the second time has elapsed since the emergency call was made, An emergency call processing unit that transmits a message requesting transmission of a location information request message by the communication unit.

  Further, in the wireless terminal device of the present invention, the communication unit selects any one of a plurality of communication systems to perform standby and communication, and the emergency call processing unit receives the second time. In addition, before transmitting a message requesting transmission of the location information request message, it may be configured to control to execute a reselection process for reselecting a communication system used in the communication unit.

  In the wireless terminal device of the present invention, the communication unit can select and wait for any one of a plurality of communication systems, and the emergency call processing unit can pass the second time. Then, when transmitting a message requesting transmission of the location information request message, if transmission of the message fails, reselection processing is performed to reselect the communication system used in the communication unit, After that, a message requesting transmission of the position information request message may be transmitted again.

  In addition, the wireless terminal device of the present invention has a communication unit, and when the communication unit makes an emergency call to a specific telephone number, a location information request message based on the emergency call is sent to the emergency call. A wireless terminal device that performs positioning of position information when received by the communication unit within a first period of time, and the time that has elapsed without receiving the position information request message since the emergency call is made A timer monitoring unit for monitoring whether or not a second time longer than the first time has been reached, and when the second time has elapsed since the emergency call has been made, position information is measured and And an emergency call processing unit that transmits the positioning result of the position information.

  In the wireless terminal device of the present invention, the communication unit can select and wait for any one of a plurality of communication systems, and the emergency call processing unit can pass the second time. Then, it may be configured to perform a reselection process for performing reselection of a communication system used in the communication unit before positioning of the position information.

  In the wireless terminal device of the present invention, the communication unit can select and wait for any one of a plurality of communication systems, and the emergency call processing unit can pass the second time. When positioning of the position information is performed, if positioning or positioning result transmission fails, reselection processing for reselecting a communication system to be used in the communication unit is executed, and positioning or positioning result transmission is performed again. You may comprise so that it may control to perform.

  In the wireless terminal device of the present invention, the communication unit corresponds to a first communication protocol used when the emergency call is made and a second communication protocol different from the first communication protocol, The emergency call processing unit performs positioning of the position information after the second time has elapsed after making the emergency call using the first communication protocol, and sends the positioning result of the position information to the second communication. You may comprise so that it may transmit by a protocol.

  In the wireless terminal device of the present invention, when the emergency call processing unit fails to transmit the positioning result of the location information using the second communication protocol, the emergency transmission processing unit displays the positioning result of the location information as the first information. You may comprise so that it may retransmit with a communication protocol.

  In the wireless terminal device of the present invention, the communication unit can use the first and second communication protocols in any of a plurality of communication systems, and the emergency call processing unit can When the second time elapses, the emergency call processing unit that controls to execute the reselection process before positioning of the position information transmits the positioning result of the position information to the transmission by the second communication protocol. In case of failure, a reselection process for reselecting a communication system to be used in the communication unit is executed, and when the reselection process is completed, a message requesting transmission of the location information request message is transmitted. It may be configured.

  According to the wireless terminal device of the present invention, it is possible to transmit position information as much as possible even if reception of a positioning request message after an emergency call fails in an unstable radio wave environment.

FIG. 1 is a block diagram showing an internal configuration of a radio terminal apparatus according to an embodiment of the present invention. Here, a mobile phone is exemplified as the wireless terminal device.
As shown in FIG. 1, the mobile phone includes a communication unit 1, an operation unit 2, an audio processing unit 3, a speaker (SP) 4, a microphone (MIC) 5, a display unit 6, and a storage unit 7. And a control unit 8 and a GPS receiver 9.

The communication unit 1 captures a plurality of communication systems and, for example, according to a communication protocol such as CDMA2000 1x (hereinafter simply referred to as 1x) or EVDO, a network side device (including a base station connected to a mobile communication network (not shown)) ( Wireless communication is performed with the emergency call center.
Since EVDO communication is specialized for data communication, the data rate during communication is higher than that of 1x communication. On the other hand, unlike EVDO communication, 1x communication has a feature of supporting voice communication in addition to data communication.

  The operation unit 2 has keys to which various functions are assigned, such as a power key, a call key, a numeric key, a character key, a direction key, a determination key, and a call key. These keys are operated by the user. If so, a signal corresponding to the operation content is generated and input to the control unit 8 as a user instruction. Here, it is also used as a key for emergency notification to the police (110), the Japan Coast Guard (118), and the fire department (119).

The audio processing unit 3 processes an audio signal output from the speaker 4 and an audio signal input from the microphone 5.
That is, the audio processing unit 3 amplifies the audio input from the microphone 5, performs analog / digital conversion, further performs signal processing such as encoding, converts it into digital audio data, and outputs it to the control unit 8. .
Further, the audio processing unit 3 performs signal processing such as decoding, digital / analog conversion, and amplification on the audio data supplied from the control unit 8, converts the audio data into an analog audio signal, and outputs the analog audio signal to the speaker 4.

The display unit 6 is configured using a display device such as a liquid crystal display panel or an organic EL (Electro-Luminescence) panel, for example, and displays an image corresponding to a video signal supplied from the control unit 8.
The display unit 6 is, for example, a telephone number of a callee at the time of outgoing call, a telephone number of an incoming callee at the time of incoming call, contents of received mail or outgoing mail, date, time, remaining battery level, success / failure of outgoing call, standby screen, etc. Display information and images.

The storage unit 7 stores various data used for processing in the control unit 8. The storage unit 7 includes, for example, an application program executed by the control unit 8, an address book for managing personal information such as a telephone number or an e-mail address of a communication partner, a voice file for playing a ring tone or an alarm sound, a standby screen Image files, various setting data, temporary data (positioning request reception flag 820 described later) used in the process of the program, and the like.
The above-described storage unit 7 is configured by, for example, a nonvolatile storage device (flash memory), a randomly accessible storage device (SRAM, DRAM), or the like.

The control unit 8 comprehensively controls the overall operation of the mobile phone. That is, the control unit 8 performs various processes of the mobile phone (controls such as voice calls performed via a circuit switching network, creation and transmission / reception of e-mails, browsing of the Internet Web (World Wide Web) site). The operation of each block described above (execution of signal transmission / reception in the communication unit 1, input / output of audio in the audio processing unit 3, display of an image in the display unit 6, etc.) so as to be executed in an appropriate procedure according to operation 2 To control.
The control unit 8 includes a computer (microprocessor) that executes processing based on a program (operating system, application program, etc.) stored in the storage unit 7, and performs the above-described processing according to a procedure instructed in this program. Execute. That is, instruction codes are sequentially read from programs such as an operating system and application programs stored in the storage unit 7 to execute processing.

The control unit 8 also makes an emergency call to a specific number such as “110” or “119” and then receives a location information request message within the first time after making an emergency call. Has a function of positioning position information.
Specifically, the control unit 8 sets the second time (positioning request incoming waiting time, for example, 30 seconds) longer than the first time (positioning request incoming waiting time, for example, 20 seconds). When the second time has elapsed after monitoring, a message requesting transmission of the location information request message to the emergency call center is transmitted, or when the second time has elapsed, the location information is measured and the location information is determined. The positioning result of the position information is transmitted to the emergency call center.

  Note that the GPS receiver 9 receives information on latitude, longitude, and time from a GPS satellite (not shown) and supplies the information to the control unit 8, whereby the control unit 8 calculates the current location of the wireless terminal device. It becomes possible.

As shown in FIG. 1, the control unit 8 includes a main control unit 80, a timer monitoring unit 81, and an emergency call processing unit 82.
The functions of these blocks are achieved by executing the respective programs stored in the storage unit 7 in the control unit 8, and are actually separated from other blocks in the control unit 8. However, it does not indicate only the built-in components, but represents the processing units separately for the sake of simplicity.

  The main control unit 80 monitors a second time longer than the first time and transmits a message requesting transmission of a location information request message to the emergency call center when the second time has elapsed, or When the second time elapses, the position information is measured and the positioning result of the position information is transmitted to the emergency call center as a control center, and the sequence control of the functional blocks 81 and 82 described above is performed. I do.

  The timer monitoring unit 81 has a function of monitoring a second time longer than the first time and notifying the main control unit 80 when a timeout is detected.

The emergency call processing unit 82 transmits a message requesting transmission of the location information request message to the emergency call center via the main control unit 80 when the second time has elapsed, or the second time When it has elapsed, it has a function of positioning the position information and transmitting a positioning result of the position information.
FIG. 2 shows the internal configuration of the emergency call processing unit 82 in a functionally expanded manner.

  As shown in FIG. 2, the emergency call processing unit 82 includes a positioning request reception flag 820, a location information positioning request reception processing unit 821, an SMS generation / transmission unit 822, a GPS positioning calculation unit 823, and a reselection processing unit. 824 and a communication protocol processing unit 825.

The location information positioning request reception processing unit 821 sends an emergency call to a specific number such as “110” or “119” to the emergency call center, and then the location where the wireless terminal device is transmitted from the emergency call center. When receiving an incoming information request message, it has a function of turning on the contents of the positioning request reception flag 820 allocated and stored in the storage unit 7.
The position information positioning request reception processing unit 821 also turns OFF the content of the positioning request reception flag 820 when a GPS positioning calculation unit 823 described later measures the position information and transmits the positioning result of the position information to the emergency call center. It also has a function to cancel.

The SMS generation / transmission unit 822 uses SMS (Short Message Service) to send a message requesting transmission of a location information request message to the emergency call center in response to time-out detection (second time has elapsed) by the timer monitoring unit 81. It has a function to transmit. The emergency call center is provided for each type of emergency call such as police or fire department so that the location of the terminal that made the emergency call can be searched accurately at high speed. The destination of the emergency call center is a specific number or a specific address, and is stored in advance in the storage unit 7 in association with each emergency call telephone number.
The SMS generation / transmission unit 822 also transmits the positioning result of the position information output from the GPS positioning calculation unit 823 activated when the timer monitoring unit 81 detects a time-out (second time has elapsed) by SMS. It also has a function. Then, when generating an SMS to the emergency call center after an emergency call, the SMS generation / transmission unit searches for the telephone number of the call made immediately before and sends the specific number / address corresponding to this telephone number to the destination Then, an SMS is generated by inserting a text in which the local station ID, the local station telephone number, the position information, and the SMS creation time are associated with each other.

  The GPS positioning calculation unit 823 measures the current location (positional information) of the wireless terminal device from the information on latitude, longitude, and time received from the GPS receiver 9 via the main control unit 80, and notifies the main control unit 80 of it. It has the function to do.

The reselection processing unit 824 has a function of executing a reselection process for reselecting a communication system to be captured when a timeout notification (second time elapses) is received from the timer monitoring unit 81 via the main control unit 80. Have. “Reselection” means that standby and communication are possible using a plurality of frequency bands, such as the old 800 MHz band (band class 3), the new 800 MHz band (band class 0), and 2 GHz band (band class 6). This is one of the processes for changing the standby between the respective frequency bands in a mobile phone or the like. In other words, once the standby in the low-priority frequency band (lower communication system) is released (session release), the other high-priority frequency band is captured, and the high-priority wave band can be captured , The process of changing the standby frequency band to a higher frequency band (referred to as a higher communication system) by performing the location registration process in that frequency band is called reselection. Note that reselection is normally performed at predetermined intervals.
The reselection processing unit 824 transmits a message (SMS) requesting transmission of a location information request message (addressed to the emergency call center) to the main control unit 80 when the reselection processing is completed. The reselection processing unit 824 also executes reselection processing when the SMS transmission fails, and when the reselection processing ends, the reselection processing unit 824 sends a location information request message (to the emergency call center) to the main control unit 80. Re-send SMS requesting transmission.

  The communication protocol processing unit 825 can perform communication using a first communication protocol (for example, 1x) and a second communication protocol (for example, EVDO) that performs communication at a higher data rate than the first communication protocol. After the emergency transmission is performed by the first communication protocol, when the timer monitoring unit 81 detects that the second time has elapsed, the GPS positioning calculation unit 823 is activated to measure the position information, and the second It has a function of transmitting a positioning result of position information using the communication protocol.

  Hereinafter, the operation for each example of the wireless terminal device according to the embodiment of the present invention shown in FIGS. 1 and 2 will be described in detail with reference to the flowcharts shown in FIGS.

[Example 1]
FIG. 3 is a flowchart showing the operation of the first embodiment, and shows an operation for requesting transmission of a positioning request message by SMS transmission when the positioning request message from the emergency call center cannot be received. . FIG. 3 (a) shows an operation during an emergency call and FIG. 3 (b) shows an operation during standby transition.

In FIG. 3A, when the user makes an emergency call by operating the mobile phone, the emergency call center transmits a location request message to the mobile phone, and the mobile phone receives the location request message. (S301 “Yes”).
The mobile phone that has received the positioning request message (the location information positioning request reception processing unit 821 of the emergency call processing unit 82) sets the positioning request reception flag 820 assigned to the storage unit 7 to ON in order to store this fact. (S302).
On the other hand, when the positioning request message is not received (S301 “No”), since the emergency call center does not need the position information, the positioning request reception flag 820 is not set to ON.
The mobile phone (GPS positioning calculation unit 823) that has received the positioning request message performs GPS positioning, and when the GPS positioning is completed (S303 “Yes”), the emergency call processing unit 82 of the wireless terminal device performs main control. The unit 80 transmits the positioning result addressed to the emergency call center via the communication unit 1 and turns off the positioning request reception flag 820 allocated and stored in the storage unit 7 (S304).
If the emergency call is disconnected due to a call disconnection or user end call before the GPS positioning is completed (S303 “No”), the positioning request reception flag 820 remains set to ON.

In FIG. 3B, after the standby state transition, the mobile phone (main control unit 80) refers to the positioning request reception flag 820 (S311), and when it is set to ON (S311 “Yes”), timer monitoring The unit 81 is activated to start a positioning request waiting timer (not shown), and the position information positioning request reception processing unit 821 cancels the positioning request reception flag 820 (set to OFF) (S312).
In addition, when the mobile phone (main control unit 80) has received an incoming location information positioning request from the emergency call center before the positioning request wait timer times out (S313 “No”, S314 “Yes”), the mobile phone (main control unit 80) Accordingly, position information positioning request incoming reception processing (GPS positioning and positioning result report) is performed (S315).
That is, the main control unit 80 activates the GPS positioning calculation unit 823 of the emergency call processing unit 82, and the GPS positioning calculation unit 823 thereby performs a positioning calculation from information on latitude, longitude, and time acquired by the GPS receiver 9. The positioning result is converted into SMS by the SMS generation / transmission unit 822 and transmitted to the emergency call center via the main control unit 80 and the communication unit 1.

On the other hand, when the timer monitoring unit 81 detects a timeout of the positioning request wait timer (S313 “Yes”), the mobile phone (emergency call processing unit 82) activates the SMS generation and transmission unit 822, and the position information positioning request message Is notified to the emergency call center by SMS transmission (location information positioning request message transmission request) (S316).
The emergency call center that has received the SMS recognizes that the mobile phone has not received the incoming location information positioning request message, and responds as necessary by resending the location information positioning request message.

According to the first embodiment described above, when the mobile phone fails to receive the incoming positioning request message from the emergency call center, it requests the emergency call by resending the positioning request message by SMS transmission. The center can receive position information as much as possible even in an unstable radio wave environment. Further, at this time, the emergency call center has an advantage that it can select whether or not to retransmit the positioning request message.
That is, when the mobile phone receives a positioning request message from the emergency call center during an emergency call and fails in the positioning for some reason during the positioning, the second time monitoring by the positioning request message waiting timer is performed. When a timeout is detected, a retransmission request for the positioning request message is transmitted by SMS.
Therefore, although the emergency call center has transmitted the location positioning request message addressed to the mobile phone, even if it is disconnected before receiving the positioning result, the mobile phone can request retransmission of the location positioning request message. Position information can be received even in a radio wave environment.

  FIG. 4 is a flowchart showing the operation of an application example of the first embodiment (hereinafter referred to as the first embodiment 1-2). When the mobile phone fails to receive the incoming positioning request message from the emergency call center, A mechanism in which a mobile phone autonomously performs GPS positioning and notifies a positioning result is shown. Here, since the operation during the emergency call is the same as that of the first embodiment shown in FIG. 3A, only the operation during standby transition will be described.

In FIG. 4, the mobile phone (main control unit 80) refers to the positioning request reception flag 820 assigned to the storage unit 7 (S411), and when it is set to ON (S411 “Yes”), the timer monitoring unit 81, the positioning request reception waiting timer is started, and the positioning request reception flag 820 is canceled (set to OFF) by the position information positioning request reception processing unit 821 of the emergency call processing unit 82 (S412).
Further, when the mobile phone (main control unit 80) has received the location information positioning request message from the emergency call center before the positioning request waiting timer has timed out (S413 “No”, S414 “Yes”), According to the instruction, position information positioning request incoming reception processing (GPS positioning and reporting of positioning results) is performed (S415).

On the other hand, when the timer monitoring unit 81 detects a timeout of the positioning request waiting timer (S413 “Yes”), the mobile phone autonomously performs GPS positioning (S416).
That is, the main control unit 80 activates the GPS positioning calculation unit 823 of the emergency call processing unit 82, whereby the GPS positioning calculation unit 823 is located from the information about latitude, longitude, and time acquired by the GPS receiver 9. The positioning calculation is performed, the positioning result is converted into SMS by the SMS generation / transmission unit 822, and transmitted to the emergency call center via the main control unit 80 and the communication unit 1 (S417).

According to Example 1-2 described above, the mobile phone autonomously performs GPS positioning without requesting retransmission of the positioning request message after detecting the timeout of the positioning request waiting timer, and obtains the positioning result. Since the SMS is transmitted, the emergency call center can obtain the location information of the mobile phone without performing retransmission of the location request message.
Therefore, the embodiment 1-2 has an advantage that the load of the emergency call center can be reduced as compared with the embodiment 1.

[Example 2]
FIG. 5 is a flowchart showing the operation of the second embodiment. When the mobile phone fails to receive an incoming positioning request message, it recognizes that the surrounding radio wave environment has deteriorated and autonomously performs reselection. Each system that performs (system reselection operation) and performs re-transmission request of the emergency call center location positioning request message after reselection of the communication system or SMS transmission for notifying the GPS positioning result is shown. The former is shown in FIG. 5 (a), and the latter is shown in FIG. 5 (b).

In FIG. 5A, the mobile phone (main control unit 80) refers to the positioning request reception flag 820 assigned to the storage unit 7 (S511), and when it is set to ON (S511 “Yes”), The timer monitoring unit 81 is activated to start a positioning request reception waiting timer, and the positioning request reception flag 820 is canceled (set to OFF) by the position information positioning request reception processing unit 821 (S512).
In addition, when the mobile phone (main control unit 80) has received an incoming location information positioning request message from the emergency call center before the positioning request waiting timer has timed out (S513 “No”, S314 “Yes”), According to the instruction, position information positioning request incoming reception processing (GPS positioning and reporting of positioning results) is performed (S515).

On the other hand, when the timer monitoring unit 81 detects a timeout of the positioning request waiting timer (S513 “Yes”), the mobile phone (main control unit 80) is in an unstable radio wave environment of the waiting communication system. It recognizes that there is, and activates the reselection processing unit 824 of the emergency call processing unit 82 to autonomously execute the reselection processing (system reselection operation) (S516).
Subsequently, after re-selecting the communication system by reselection, the main control unit 80 activates the SMS generation / transmission unit 822 of the emergency call processing unit 82 and, as in the first embodiment, performs the location positioning request message by SMS transmission to the emergency call center. Is requested again (S517).

In FIG. 5B, the operations in S521 to S526 are the same as those in S511 to S516 in FIG. 5A, and thus description thereof is omitted to avoid duplication.
The cellular phone (main control unit 80) activates the GPS positioning calculation unit 823 after activating the reselection processing unit 824 of the emergency call processing unit 82 to autonomously execute the reselection processing (system reselection operation). Then, GPS positioning is autonomously performed (S527). Then, the result of the positioning calculation is transmitted to the emergency call center by SMS (S528). Note that in both FIGS. 5A and 5B, SMS transmission may be stopped when the reselection processing fails.

  In the second embodiment described above, since it is highly possible that the mobile phone fails to receive the location positioning request message transmitted by the emergency call center, it is highly likely that the mobile phone is in a bad radio wave environment. In order to avoid this, it is necessary to shift to a better radio wave environment by reselection, send a request for resending the positioning request message to the emergency call center after reselecting the communication system, or send an SMS to notify the GPS positioning result. Is what you do. For this reason, according to the second embodiment, it is possible to provide a wireless terminal device capable of transmitting position information as much as possible even in an unstable radio wave environment and failing to receive a positioning request message after an emergency call. .

[Example 3]
FIG. 6 is a flowchart showing the operation of the third embodiment. When the mobile phone fails to receive the positioning request message, as in the first embodiment, the transmission request for the positioning request message is transmitted by SMS, and the SMS transmission is performed. In the case of failure, a mechanism is shown in which reselection processing is performed autonomously and SMS transmission is performed again after reselecting the communication system. 6A shows the operation when the standby state transitions, and FIG. 6B shows the operation when the SMS transmission fails.

In FIG. 6A, the mobile phone (main control unit 80) refers to the positioning request reception flag 820 assigned to the storage unit 7 (S611), and when it is set to ON (S611 “Yes”), The timer monitoring unit 81 is activated to start a positioning request reception waiting timer, and the positioning request reception flag 820 is canceled (set to OFF) by the position information positioning request reception processing unit 821 (S612).
In addition, when the mobile phone (main control unit 80) has received an incoming location information positioning request from the emergency call center before the positioning request waiting timer has timed out (S613 “No”, S614 “Yes”), an instruction is given. Accordingly, the position information positioning request incoming reception processing (GPS positioning and positioning result report) is performed (S615).

On the other hand, when the timer monitoring unit 81 detects a timeout of the positioning request wait timer (S613 “Yes”), the mobile phone (emergency transmission processing unit 82) activates the SMS generation transmission unit 822, and receives the location information positioning request message. It is notified to the emergency call center by SMS transmission that the incoming call cannot be received (S616).
When the SMS transmission described above has failed (S617 “No”), the emergency call processing unit 82 recognizes that the radio wave environment at the timing of transmitting the SMS is unstable, activates the reselection processing unit 824, The selection processing unit 824 reselects the communication system by autonomously executing the reselection processing (S621 in FIG. 6B).

  When the re-selection of the communication system described above is successful (S622 “Yes”), the emergency call processing unit 82 activates the SMS generation / transmission unit 822, and the SMS generation / transmission unit 822 passes through the main control unit 80 and the communication unit 1. An SMS is sent to the emergency call center and a request for receiving a positioning request message (S623). If the SMS transmission further fails, the SMS transmission could not be performed even if the relay section process was executed, and thus the above-described example process is terminated as a location positioning request message incoming request notification failure.

  In the third embodiment described above, since it is highly possible that the mobile phone fails to receive the location positioning request message transmitted by the emergency call center, it is highly likely that the mobile phone is in a bad radio wave environment. In order to avoid this, it is possible to shift to a better radio wave environment by reselection and, after re-selecting the communication system, send a re-transmission request for the location request message addressed to the emergency call center by SMS. For this reason, according to the third embodiment, it is possible to provide a wireless terminal device capable of transmitting position information as much as possible even in an unstable radio wave environment even if the incoming positioning request message after an emergency call fails.

[Example 4]
FIG. 7 is a flowchart showing the operation of the fourth embodiment. When the SMS transmission fails, the mobile phone autonomously performs a reselection process and moves to a better radio wave environment by reselecting the communication system. The same operation as (2) is performed, and SMS transmission of the emergency call center-addressed positioning information is performed. FIG. 7A shows the operation when the standby state transitions, and FIG. 7B shows the operation when the SMS transmission fails.

In FIG. 7A, the mobile phone (main control unit 80) refers to the positioning request reception flag 820 assigned to the storage unit 7 (S711), and when it is set to ON (S711 “Yes”), The timer monitoring unit 81 is activated to start the positioning request reception waiting timer, and the positioning request reception flag 820 is canceled (set to OFF) by the position information positioning request reception processing unit 821 (S712).
In addition, when the mobile phone (main control unit 80) has received an incoming location information positioning request from the emergency call center before the positioning request waiting timer has timed out (S713 “No”, S714 “Yes”), an instruction is given. Accordingly, the position information positioning request incoming reception processing (GPS positioning and reporting of the positioning result) is performed (S715).

On the other hand, when the timer monitoring unit 81 detects a timeout of the positioning request waiting timer (S713 “Yes”), the mobile phone (main control unit 80) autonomously performs GPS positioning (S716). That is, the main control unit 80 activates the GPS positioning calculation unit 823 of the emergency call processing unit 82, whereby the GPS positioning calculation unit 823 is located from the information about latitude, longitude, and time acquired by the GPS receiver 9. The positioning calculation is performed, the positioning result is converted into SMS by the SMS generation / transmission unit 822, and transmitted to the emergency call center via the main control unit 80 and the communication unit 1 (S717).
If the SMS transmission fails (S718 “No”), the emergency call processing unit 82 recognizes that the radio wave environment at the timing of the SMS transmission is unstable and activates the reselection processing unit 824 to perform the reselection. The processing unit 824 reselects the communication system by autonomously executing the reselection process (S721 in FIG. 7B).

When the reselection process is successful (S722 “Yes”), the emergency call processing unit 82 activates the SMS generation / transmission unit 822, and SMS-transmits the positioning result generated by the GPS positioning calculation unit 823 again (S723).
If the reselection process fails (S722 “No”), the process of the above example is terminated because there is a high possibility that the reselection process will fail. If the SMS retransmission further fails, the SMS transmission could not be performed even if the relay section process was executed, and thus the above-described example process is terminated as a positioning result notification failure.

In the above-described fourth embodiment, since it is highly likely that the mobile phone fails to receive the location positioning request message transmitted by the emergency call center, the location information positioning with urgency is likely to be in a bad radio wave environment. In order to avoid the inability to implement, re-selection is performed to shift to a better radio wave environment, and after reselecting the communication system, the GPS positioning result addressed to the emergency call center is transmitted by SMS.
For this reason, according to the fourth embodiment, it is possible to provide a wireless terminal device capable of transmitting position information as much as possible even in an unstable radio wave environment even if the incoming positioning request message after an emergency call fails.

[Example 5]
FIG. 8 is a flowchart showing the operation of the fifth embodiment, and shows a mechanism for autonomously performing GPS positioning and notifying a positioning result through EVDO connection when the mobile phone fails to receive a positioning request message. Has been.
When the mobile phone fails to transmit the positioning result, the mobile phone recognizes that the radio wave environment at the transmission timing is unstable and performs autonomous reselection processing. After reselecting the communication system, the SMS to the emergency call center It is a notification. FIG. 8A shows an operation at the time of standby state transition, and FIG. 8B shows an operation at the time of EVDO transmission failure.

In FIG. 8A, the mobile phone (main control unit 80) refers to the positioning request reception flag 820 assigned to the storage unit 7 (S811), and when it is set to ON (S811 “Yes”), The timer monitoring unit 81 is activated to start the positioning request reception waiting timer, and the positioning request reception flag 820 is canceled (set to OFF) by the position information positioning request reception processing unit 821 (S812).
In addition, the mobile phone (main control unit 80) can receive an incoming location information positioning request from the emergency call center before the positioning request waiting timer times out (S813 “No”, S814 “Yes”). Accordingly, the position information positioning request incoming reception processing (GPS positioning and reporting of positioning results) is performed (S815).

On the other hand, when the timer monitoring unit 81 detects a timeout of the positioning request wait timer (S813 “Yes”), the mobile phone (main control unit 80) autonomously performs GPS positioning (S816).
That is, under the control of the main control unit 80, the emergency call processing unit 82 activates the GPS positioning calculation unit 823, and the GPS positioning calculation unit 823 is located from the information about latitude, longitude, and time acquired by the GPS receiver 9. Performs positioning calculation.
Subsequently, the emergency call processing unit 82 activates the communication protocol processing unit 825, and the communication protocol processing unit 825 switches the communication performed by the communication unit 1 from 1x to EVDO connection, and the positioning result generated by the GPS positioning calculation unit 823. Is transmitted to the emergency call center according to the EVDO protocol (S817).

When the data transmission of the positioning result described above has failed (S818 “No”), the emergency call processing unit 82 activates the communication protocol processing unit 825 to switch again to 1x transmission, and the SMS generation transmission unit 822 addresses the emergency call center. The GPS positioning result is retransmitted (S821).
When the SMS transmission of the GPS positioning result described above further fails (S822 “No”), the emergency call processing unit 82 recognizes that the radio wave environment at the SMS transmission timing is unstable, and the reselection processing has already been performed. It is determined whether it has been completed (S823).
When the reselection processing has not been completed (S823 “No”), the emergency call processing unit 82 activates the reselection processing unit 824, and at this time, the reselection processing unit 824 autonomously executes the reselection processing (S824). ) After re-selecting the communication system (S825 “Yes”), the process returns to S821, and the GPS positioning result is retransmitted by SMS. Note that the SMS retransmission here can be replaced with EVDO transmission.

  On the other hand, when the reselection process fails (S825 “No”), the process of the above-described example ends because there is a high possibility that the reselection process will fail. If the SMS retransmission further fails, the SMS transmission could not be performed even if the relay section process was executed, and thus the above-described series of processes is terminated as a positioning result notification failure.

  According to the fifth embodiment described above, the GPS positioning is autonomously performed when the incoming positioning request message cannot be received, and the GPS positioning result is notified through the EVDO connection. Therefore, it is possible to provide a wireless terminal device capable of transmitting position information as much as possible even if the positioning request message after an emergency call has failed to be received, and a response (positioning result notification) that is faster than 1x. It becomes possible.

  As described above, according to the wireless terminal device according to the embodiment of the present invention, even if reception of the positioning request message transmitted from the emergency call center fails during an emergency call, the wireless terminal device fails to receive a call. Therefore, the emergency call center can send the positioning request message again, and this greatly increases the opportunity for the emergency call center to obtain the desired positioning information. In addition, even if the location information positioning required by the emergency call center fails, the wireless terminal device can notify the result of autonomous positioning, so it becomes possible to construct a system without changing the network side device including the base station, The certainty of position information positioning result notification is improved. Furthermore, reselection of the communication system by reselection allows the wireless terminal device to transition to a better radio wave environment even when it is in an unstable radio wave environment, making it easier to deal with situations that require emergency reporting.

In addition, according to the above-described wireless terminal device according to the embodiment of the present invention, only a mobile phone is illustrated as an example. However, for example, a PC, a PDA (Personal Digital Assistants), a game machine, and a car having the same configuration The same applies to on-board communication modules.
2 may be realized entirely by software, or at least a part thereof may be realized by hardware. The functions of the constituent blocks included in the wireless terminal device according to the embodiment of the present invention shown in FIG. For example, the data processing in the location information positioning request reception processing unit 821, the SMS generation transmission unit 822, the GPS positioning calculation unit 823, the reselection processing unit 824, and the communication protocol processing unit 825 constituting the emergency call processing unit 82 is 1 or It may be realized on a computer by a plurality of programs, or at least a part thereof may be realized by hardware.

It is a block diagram which shows the internal structure of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is the block diagram which expanded and showed the function of the internal structure of the emergency call processing part shown in FIG. It is a flowchart which shows operation | movement of Example 1 of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of Example 1-2 of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of Example 2 of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of Example 3 of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of Example 4 of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of Example 5 of the radio | wireless terminal apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the system configuration | structure of the conventional positional information acquisition system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Communication part, 2 ... Operation part, 3 ... Sound processing part, 4 ... Speaker (SP), 5 ... Microphone (MIC), 6 ... Display part, 7 ... Memory | storage part, 8 ... Control part, 9 ... GPS receiver, 80 ... main control unit, 81 ... timer monitoring unit, 82 ... emergency call processing unit, 820 ... positioning request reception flag, 821 ... location information positioning request reception processing unit, 822 ... SMS generation / transmission unit, 823 ... GPS positioning calculation unit, 824 ... Reselection processing unit, 825 ... Communication protocol processing unit.

Claims (9)

A communication unit, and when the emergency call is made to a specific telephone number in the communication unit, a location information request message based on the emergency call is transmitted within a first time after the emergency call is made. A wireless terminal device that performs positioning of position information when received by a unit,
A timer monitoring unit for monitoring whether or not a time elapsed without receiving the location information request message since the emergency call has reached a second time longer than the first time;
An emergency call processing unit for transmitting a message requesting transmission of the location information request message by the communication unit when the second time has elapsed since the emergency call was made;
A wireless terminal device comprising: The communication unit selects one of a plurality of communication systems to perform standby and communication,
The emergency call processing unit performs reselection for reselecting a communication system to be used in the communication unit before transmitting a message requesting transmission of the location information request message when the second time has elapsed. The wireless terminal device according to claim 1, wherein the wireless terminal device is controlled to execute processing. The communication unit is capable of waiting and communicating by selecting any of a plurality of communication systems,
The emergency call processing unit is used in the communication unit when transmitting the message requesting transmission of the location information request message after the second time elapses and transmission of the message fails. The radio terminal apparatus according to claim 1, wherein a reselection process for reselecting a communication system is executed, and then a message requesting transmission of the location information request message is transmitted again. A communication unit, and when the emergency call is made to a specific telephone number in the communication unit, a location information request message based on the emergency call is transmitted within a first time after the emergency call is made. A wireless terminal device that performs positioning of position information when received by a unit,
A timer monitoring unit for monitoring whether or not a time elapsed without receiving the location information request message since the emergency call has reached a second time longer than the first time;
When the second time has elapsed since the emergency call, the emergency call processing unit that measures the position information and transmits the positioning result of the position information;
A wireless terminal device comprising: The communication unit is capable of waiting and communicating by selecting any of a plurality of communication systems,
The emergency call processing unit controls to execute a reselection process for reselecting a communication system to be used in the communication unit before positioning of the position information when the second time has elapsed. The wireless terminal device according to claim 4. The communication unit is capable of waiting and communicating by selecting any of a plurality of communication systems,
The emergency call processing unit reselects a communication system to be used in the communication unit when the positioning or positioning result transmission fails when the position information is measured after the second time has elapsed. The wireless terminal device according to claim 4, wherein control is performed so as to execute reselection processing and again perform positioning or transmission of positioning results. The communication unit corresponds to a first communication protocol used when making the emergency call and a second communication protocol different from the first communication protocol,
The emergency call processing unit
After performing the emergency transmission by the first communication protocol, when positioning of the position information is performed after the second time has elapsed, the positioning result of the position information is transmitted by the second communication protocol. The radio | wireless terminal apparatus of Claim 4 characterized by the above-mentioned. The emergency call processing unit
The positioning result of the position information is retransmitted by the first communication protocol when the positioning result of the position information has failed to be transmitted by the second communication protocol. The wireless end of the device. The communication unit can use the first and second communication protocols in any of a plurality of communication systems,
The emergency call processing unit
When the second time has elapsed, before the positioning of the position information, the emergency call processing unit that controls to execute a reselection process,
When the positioning result of the position information fails to be transmitted by the second communication protocol, a reselection process is performed to reselect a communication system used in the communication unit, and the reselection process is completed. The wireless terminal device according to claim 7, wherein a message requesting transmission of the location information request message is transmitted.

Images