KR20080090674A - Mobile terminal and method for performing emergency calls using sms messages - Google Patents

Abstract

A mobile terminal and an urgent calling method using an SMS message are provided to allow a user to respond to an urgent call quickly and simply. A storage unit(56) stores an urgent call number list including a plurality of mobile terminal numbers. In case of an urgent call using an SMS message transmission/reception function, a controller(54) sequentially transmits a urgent call SMS message to a mobile terminal number according to the sequential order of the urgent call number list. When a response message is received from one of the mobile terminals that received the urgent call SMS message, the controller stops the urgent call. After the urgent call SMS message is transmitted, the controller waits until the response message is received from the mobile terminal of a corresponding number, and then transmits the urgent call SMS message to a next mobile terminal.

Description

Emergency call method using mobile terminal and SMS message {MOBILE TERMINAL AND METHOD FOR PERFORMING EMERGENCY CALLS USING SMS MESSAGES}

1 is a diagram illustrating a configuration of a DECT service system for receiving an SMS message to which an embodiment is applied.

2A to 2C illustrate the format of an IWU-to-IWU information field and a user-defined field defined for SMS service.

3 is a block diagram schematically illustrating the configuration of a DECT handset according to one embodiment.

4 is a flowchart of a DECT handset emergency call method, according to an embodiment.

5 is a flow chart of a DECT handset emergency call method according to another embodiment.

6 is a flowchart of a DECT handset call response method according to an embodiment.

* Explanation of symbols for the main parts of the drawings

 1: DECT System 10: Digital Hybrid Key Phone System

20: SMS receiver 30: WTIB

40a, 40b, 40c: BS 50: Wireless DECT Handset

52: wireless signal processing unit 53: key input unit

54 control unit 57 display unit

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal supporting an SMS message service and an emergency call method using an SMS message.

DECT (Digital European Cordless Telecommunication) refers to a European digital cordless telephone using a frequency band with excellent transmission performance of 1.88 GHz to 1.90 GHz. The existing home wireless telephone (CT-1) and outgoing mobile telephone (CT-2) This is a third generation cordless phone. DECT provides a flexible digital method that is emerging as a standard for building codeless networks in homes, corporations, and public institutions.European digital cordless telephone products are currently commercialized. 2 types of home systems, which can be used in homes and offices, and a key system that connects two telephone lines to the main body.It is likely to be developed into a public mobile communication network like a mobile phone in the future. It is a high skill. In addition to the basic voice call service, the DECT system also defines additional services and data services, and has various application areas, and is particularly suitable for use as a wireless PBX in a business building.

For a system for providing a DECT service, referring to FIG. 1, a digital hybrid key telephone system (10), a wireless terminal interface board (WTIB) 30, a DECT base (BS) 40a, 40b, 40c) and wireless DECT handsets 50a, 50b, ..., 50f. The digital hybrid keyphone system 10 is connected to a Public Switched Telephone Network (PSTN) 2 and an Integrated Services Digital Network (ISDN) 4 to provide DECT services. The WTIB 30 is a board for interfacing the BSs 40a, 40b, and 40c with the key phone system 10. The WTIB 30 may be installed as an option board in the key phone system 10. BSs 40a, 40b, and 40c are wired to WTIB 130 and perform wireless communication with wireless DECT handsets 50a, 50b,..., 50f. Each BS 40a, 40b, 40c has a cell area 10a, 10b, 10c as a range capable of transmitting and receiving with the wireless DECT handsets 50a, 50b, ..., 50f. The wireless DECT handsets 50a, 50b,..., 50f in, 10c are limited in the number of calls that can be made simultaneously depending on the processing capacity of the BSs 40a, 40b, 40c.

The wireless DECT handset of this DECT system has a Short Message Service (SMS) transmission and reception function, which is similar to a general SMS function implemented in a mobile terminal such as CDMA / cellular. Accordingly, it supports the function to create / send / receive / save / delete SMS data.

However, when a mobile terminal including a DECT handset transmits an emergency message for calling a counterpart using a conventional SMS message, the connection is terminated in a state where the counterpart cannot receive a phone call. In addition, in order to respond to such an urgent message, the other party should directly press the send SMS message button, enter the contents of the response message and the recipient's phone number, and then send it. After retrieving and entering the phone number and resending the SMS message, there was a problem that the emergency situation could not be properly handled.

An object of the present invention, by using the SMS function to automatically perform a sequential call to the number registered in the pre-stored emergency number list to easily perform an emergency call, a mobile terminal capable of quickly and easily responding to an emergency call and It is to provide an emergency call method using an SMS message.

According to an embodiment, the emergency call number list is stored in advance in the mobile terminal, and when the emergency call message is transmitted, the emergency call number is sequentially transmitted to the mobile terminal having the number registered in the emergency call number list, and the emergency call message is transmitted to the current mobile terminal. If there is no response or waits for a predetermined time and there is no response, an emergency call message is transmitted to the next sequence number. Also, when the mobile terminal receives the emergency call SMS message, the mobile terminal displays a menu screen for selecting a response message for the emergency call.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the following description, when there is a risk of unnecessarily obscuring the gist of the present invention, a detailed description of well-known functions and configurations will be omitted.

The present invention relates to a technique in which a mobile terminal performs an emergency call to a mobile terminal number registered in a pre-registered emergency call list by using an SMS function. Hereinafter, the mobile terminal is a DECT terminal. .

1 is a diagram illustrating a configuration of a system for providing a DECT service to which an embodiment is applied. As shown in FIG. 1, the DECT system includes a digital hybrid key telephone system 10, a wireless terminal interface board (WTIB) 30, and a DECT base ( BS) 40a, 40b, 40c and wireless DECT handsets 50a, 50b,..., 50f. The digital hybrid keyphone system 10 is connected to a Public Switched Telephone Network (PSTN) 2 and an Integrated Services Digital Network (ISDN) 4 to provide DECT services. In addition, when the SMS signal is included in the call request signal received from the trunk line or the extension to the key phone system 10, the SMS receiver 20 extracts an SMS message from the call request signal.

The process of sending an SMS message from the DECT handset 50 to an external trunk line or to another DECT handset in the key phone system 10 is as follows. The transmission of SMS messages from the DECT handset 50 is implemented by the function of the DECT handset itself. Its form is similar to the general procedure for composing an SMS message in a mobile communication terminal such as CDMA / cellular. That is, the user inputs the other party's phone number and his / her phone number in the SMS message sending mode using the key input unit 53 of the DECT handset 50, composes a message, and presses a call key to make a call request. The call request signal is first transmitted to the keyphone system 10 through the DECT base station 40 and the DECT interface board 30, and when a response is received from the keyphone system 10, between the keyphone system 10 and the DECT handset 50. The call is connected to. The DECT handset 50 then sends a signal to the key phone system 10 again to send the SMS message, followed by the SMS message. If the signal input to the key phone system 10 is an SMS signal, the key phone system 10 transmits this signal to the SMS receiver 20. The SMS receiving apparatus 20 extracts only the SMS message from the input signal and delivers the SMS message to the key phone system 10. Upon receiving the SMS message from the SMS receiving device 20, the key phone system 10 transmits an ACK signal indicating that the message has been normally received, and transmits the SMS message to the DECT interface board 30.

The SMS message transmitted from the key phone system 10 to the DECT interface board 30 follows the following format. First, 1 byte indicates that it is an SMS signal, and a value thereof is determined so as to be distinguished from other commands transmitted to the DECT interface board 30. For example, '00000001' may be used as a command indicating that it is an SMS signal. The second contains the ASCII characters of the actual SMS message. The next byte contains the extension number of the DECT handset registered as an extension in the key phone system 10. The next byte contains the information indicating the length of the SMS message, and finally the information that determines the type of the SMS. If this value is 1, it is an emergency call SMS, not a normal SMS. The message format for SMS message transmission from the above-described key phone system 10 to the DECT handset 50 is as follows. At this time, 'Ox2D' indicates a command to transmit a message from the key phone system 10 to the DECT handset 50.

Ox2D + SMS Information (Data + From + Data & Time + ID + Type)

SMS Information Element Format: IE (1byte) + Length (1byte) + Data)

In this case, the format of the SMS information element is shown in the following table. According to this embodiment, in the following table, if the SMS Type is '1', it is assumed that the emergency SMS call.

Type Value Format Remark Type SMS Data 0x01 0x01 + Length + Data Max 80 Bytes Mandatory SMS From 0x03 0x03 + Length + Data Mandatory DATE & TIME 0x04 0x04 + Length + Data (YYMMDDHHMM) Mandatory SMS ID 0x05 0x05 + Length + Data Optional SMS Type 0x06 0x06 + Length  + Data Optional

On the other hand, the DECT interface board 30 analyzes the data of the above-described format received from the key phone system 10 and converts the first byte into a CLMS (Connectionless Message Service) message according to the standard specification of the DECT protocol if the first byte is an SMS command. The DECT base station 40 is then used to deliver an SMS message to the DECT handset 50 via the broadcast channel. That is, the DECT base station 40 carries the CLMS message of the above-described format on the broadcast channel and broadcasts it under the control of the DECT interface board 30. The signal broadcasted through the broadcast channel contains the number of the other party's DECT handset to which the call will be made. This broadcast signal is received by all DECT handsets registered as extensions to the key phone system 10, but only the DECT handsets of the corresponding number read the CLMS message, and the SMS message is displayed in the Inter Working Unit (IWU) -to-IWU information field. Extract In this case, the CLMS message is a message used to transfer simple information from the keyphone system to the DECT handset without connection of a call, and a specific format is defined by the DECT standard specification. That is, according to the CLMS message format, the IWU-to-IWU offset specifies that the DECT manufacturer can implement the manufacturer's own special service.

2 (a) is a general format of an IWU-to-IWU information field. As shown in FIG. 2A, when the first 1 bit is fixed to '1' in the IWU-to-IWU information field, and the information 7 bit of the Discriminator type field 21 is '0000001', This means that the manufacturer uses the custom field 23 to provide the manufacturer's own special service. FIG. 2 (b) shows a user defined field format according to a rule, and FIG. 2 (c) shows an example of using the format of a user defined field 23 according to a rule for an SMS message. As shown in these figures, the first byte 21 contains an identifier (discriminator type) type field 1 byte, and the second byte 23 corresponds to a user-defined field, and 1 byte of EMC indicating the manufacturer's unique ID is shown. (Equipment Manufacturer Code) is entered. The third byte contains the length of the SMS message, the fourth byte represents an urgent SMS, the remaining bytes contain the ID of the receiving DECT handset, and the actual SMS message is in the form of an ASCII code.

According to the present embodiment, the DECT handset 50 determines whether the SMS message is an emergency call SMS message when the SMS message is received. At this time, as described above, since the DECT interface board 30 converts the SMS message into a CLMS message format and transmits it to the DECT handset 50, the DECT handset 50 is connected to the CLMS message (see FIG. 3 (c)). Determine whether emergency call SMS message information is included. As a result of the determination, if an emergency call SMS message is displayed, a response information ('Yes' or 'No') selection screen (not shown) is displayed for the user to select, and the SMS message including the selected response information is automatically sent to the calling party. In addition, according to the present embodiment, when the DECT handset 50 sends an emergency call SMS message, if an emergency call button (not shown) is selected after creating an SMS message, the DECT handset 50 selects an emergency call button in advance in the storage unit 56 of the handset 50. The emergency call SMS message is transmitted according to the sequence number of the DECT handset registered in the stored emergency call number list. At this time, the emergency call SMS message content may be input in advance and stored in the storage unit 56 of the handset 50. If the DECT handset 50 does not receive a response from the receiver side DECT handset within a predetermined time (for example, five minutes) after transmitting the emergency call SMS message, or if an SMS message including 'No' response information is received, Sends an emergency call SMS message to the next emergency call number in the emergency call number list.

3 is a block diagram schematically illustrating a configuration of a DECT handset 50 according to an embodiment. As shown, the DECT handset 50 generally includes a radio signal processor 52 for transmitting and receiving an RF signal, a key input unit 53, and a codec 58 for coding / decoding audio / digital signals. And a microphone 59 / speaker 60 for voice input / output, a controller 54 for controlling digital signal processing and various functions of the handset 50, and storing data for performing the functions of the handset 50. And a storage unit 56 and a display unit 57 for displaying a variety of information to the user. In order to support the SMS service, the DECT handset 50 has a function of receiving / outgoing text. That is, it is possible to support a text input function for SMS transmission, and to display and store SMS messages for SMS reception. These functions, like other additional functions of the DECT handset 50, may be accomplished through a computer-executable program installed in the handset 50.

According to the present embodiment, the key input unit 53 may include an emergency call button (not shown) for transmitting an emergency call SMS message. In addition, the storage 56 stores an emergency call number list including a plurality of handset numbers for performing an emergency sequential call. The emergency call number list is generated by inputting the numbers of the plurality of DECT handsets 50 through the key input unit 53, and sequentially setting the order number for each of the input DECT handsets, and then listing them. Can be. According to another exemplary embodiment, the user may set the order number of the DECT handset numbers through the menu screen in the handset 50. In addition, the emergency call number list may include a plurality of groups. For example, each group may be assigned a separate group number, and each group may consist of a plurality of DECT handset numbers. In addition, the handset numbers belonging to each group may be set in turn, and the first handset number of each group may be set as the representative number of the group. Accordingly, when a specific group number or representative number is input from the key input unit 53 and the emergency call button is pressed, the SMS message may be sequentially transmitted to the numbers registered in the group in the emergency call number list.

When the emergency call SMS message is transmitted, the control unit 54 inputs a message content through the key input unit 53 and presses an emergency button (not shown). Then, the control unit 54 reads the emergency call number list stored in the storage unit 56 to receive an emergency call. The emergency call SMS message is sent to the number of the first DECT handset registered in the call number list. If the control unit 54 does not receive a response within a predetermined time after sending the emergency call SMS message, or receives a response message containing 'No', it is registered with the next priority in the emergency call number list. Send an emergency call SMS message to the handset's number. By repeating this emergency message transmission procedure, if a response is received from one of the handsets or a response message including 'Yes' is received, the transmission of the emergency call SMS message is stopped.

On the other hand, when the SMS message is received in the DECT handset 50, the control unit 54 selects a response ('Yes' or 'No') to the emergency call when the SMS message includes information indicating an emergency call. The message content is displayed on the screen of the display unit 57 together with the menu for the display. When the user selects one of 'Yes' or 'No' from the key input unit 53 in the response selection menu, the control unit 54 includes a response message including the selected response information ('Yes' or 'No'). Will be sent automatically. At this time, after the response message for the emergency call SMS message is stored in advance in the storage unit 56 of the handset 50, the user pre-stores each of 'Yes' or 'No' as a response to the emergency call SMS message. You can link to send a reply SMS message.

4 is a flowchart of an SMS emergency call method of a DECT handset according to an embodiment. As shown in FIG. 4, in order to perform an emergency call SMS message transmission, when an emergency call button of the DECT handset 50 is selected (S41), the contents of an emergency call SMS message are input and a transmission is selected (S42). The control unit 54 reads the emergency call number list and transmits an SMS message to the number of the first registered DECT handset 50 in the emergency call number list (S43). After the DECT handset 50 waits for a predetermined time (for example, 5 minutes) (S44), it is checked whether a response message is received from the DECT handset 50 of the first number (S45). Upon receiving the response message from the counterpart DECT handset, the calling party DECT handset 50 stops transmitting the emergency call SMS message (S49). However, if the response message is not received, the emergency call SMS message is automatically sent to the next terminal number (S48). The procedure of waiting for a predetermined time again (S49) is repeated until a response message is received from the counterpart DECT handset. Upon receiving the response message from the counterpart DECT handset, the calling party DECT handset 50 stops transmitting the emergency call SMS message (S49).

According to the above-described embodiment, if a response message of 'Yes' is not received within a predetermined time or if a 'No' response message is received, the next sequence of DECT handsets in the emergency call number list is received until a 'Yes' response message is received. Repeat the transmission of emergency call SMS message to the number of. On the other hand, although not shown in the figure, a process of registering an emergency phone number for transmitting an emergency call SMS message to the storage unit 56 of the DECT handset 50, and the registered emergency phone number is stored in a list can be made separately. .

5 is a flowchart of an SMS emergency call method of a DECT handset according to another embodiment. As shown in Fig. 5, in order to perform an emergency message transmission, when the emergency call button of the DECT handset is selected (S51), an emergency call SMS message is input and transmitted to the DECT handset having the first number of registered telephone numbers. (S52). The control unit 54 reads the emergency call number list and transmits an SMS message to the number of the first registered DECT handset in the emergency call number list (S53). The DECT handset receives the response message from the DECT handset having the first number (S54), and if the response message is 'Yes', the emergency call SMS message transmission is stopped (S56). However, if the response message received in step S56 is 'No', a process of transmitting an emergency message to the next DECT handset is performed again (S57), and receiving and confirming the response message until the response message becomes 'Yes'. Repeat the process (S55).

As in the above-described embodiment, after the emergency message is transmitted to the DECT handset, the response message including the response information ('Yes' or 'No') is received, and if the response information is 'No', the next sequence in the emergency call number list is displayed. Send an urgent message to your DECT handset and repeat the urgent message until the response message is 'Yes'. On the other hand, although not shown in the figure, a process of registering an emergency phone number for transmitting an emergency call SMS message to the storage unit 56 of the DECT handset 50, and the registered emergency phone number is stored in a list can be made separately. .

6 is a flowchart of a DECT handset call response method according to an embodiment. As shown in FIG. 6, when the DECT handset receives the SMS message (S61), it is checked whether the DECT handset is an emergency call SMS message based on the SMS message format (S62). According to the present embodiment, the message format transmitted from the key phone system 10 to the DECT interface board 30 may be set to include information indicating that the message is an emergency call SMS message. At this time, since the DECT interface board 30 converts the received SMS message into a CLMS message format and transmits it to the DECT handset 50, the DECT handset 50 checks whether the emergency call information is included in the CLMS message. As a result of confirming that the emergency call SMS message information is included, the DECT handset 50 displays the message content on the display unit together with the response selection menu among 'Yes' and 'No' (S63). The response message including the selected response information is transmitted to the calling party DECT handset (S64). On the other hand, the DECT handset displays the message content when the received SMS message is not an emergency call SMS message (S65). In addition, for example, when the receiver does not recognize the incoming message for a certain time, it may perform a function to automatically send a response message ('No').

With this configuration, the sender of the emergency call SMS message waits for a response from the other party after making an emergency call, and finds another caller, enters a number, and composes a message when the other party receives a response indicating that the call cannot be answered. It automatically contacts the next party without having to do so, so you can get things done quickly and effectively. And, the receiver of the emergency call SMS message can send the response simply and quickly.

In the above-described embodiment, the emergency call SMS message is described as sequentially calling the handset of the DECT system according to the priority, but the present embodiment can also be applied to other mobile terminals having an SMS message receiving function.

While the invention and its various functional components have been described in particular embodiments, the invention may be implemented in hardware, software, firmware, middleware, or a combination thereof, and the system, subsystem, components or sub-configurations thereof. It should be understood that they can be used as elements. If implemented in software, the elements of the invention are instructions / code segments for performing the necessary tasks. The program or code segments may be stored in a machine readable medium, such as a processor readable medium, a computer program product, or via a transmission medium or communication link by a computer data signal embodied in a carrier wave or a signal modulated by a carrier. Can be sent. Machine readable media or processor readable media may include any medium that can store or transmit information in a form readable and executable by a machine (eg, processor, computer, etc.).

In addition, while the present invention has been described in connection with some embodiments, it is to be understood that various modifications and changes can be made without departing from the spirit and scope of the invention as will be understood by those skilled in the art. You will need to know Also, such modifications and variations are intended to fall within the scope of the claims appended hereto.

According to the above embodiments, the emergency call can be easily performed by using the SMS message function of the mobile terminal, and the emergency call can be quickly and easily responded to.

Claims (12)

In the mobile terminal having an SMS message transmission and reception function, A storage unit for storing an emergency call number list including a plurality of mobile terminal numbers; When an emergency call is made using the SMS message transmission / reception function, an emergency call SMS message is sequentially transmitted to a corresponding mobile terminal number according to the sequence number of the emergency call number list, and a response message is received from any one mobile terminal that receives the emergency call SMS message. And a control unit for stopping an emergency call when received. The method of claim 1, The control unit, after transmitting the emergency call SMS message, waits a predetermined time until a response message is received from the mobile terminal of the corresponding number, and then transmits the emergency call SMS message to the next mobile terminal. The method of claim 1, The emergency call SMS message includes information indicating an emergency call, The control unit classifies the emergency call SMS message based on the emergency call information. The method of claim 3, When the control unit receives the emergency call SMS message, the controller displays a selection screen on whether to answer the emergency call SMS message based on the emergency call information, and transmits a response message according to the selection result to the calling mobile terminal. Mobile terminal. The method of claim 4, wherein And the response message includes a message indicating whether the call is available or unavailable and is stored in advance in the storage unit. In the emergency call method of the mobile terminal using the SMS message function, Selecting an emergency call when the SMS message function is performed; Reading a list of emergency call numbers previously stored; Sequentially transmitting an emergency call SMS message to the mobile terminal number of the emergency call number list; And stopping an emergency call when a response message from any one mobile terminal receiving the emergency call SMS message is received. The method of claim 6, And after the transmitting of the emergency call SMS message, waiting for a predetermined time until a response message is received from the mobile terminal of the corresponding number. The method of claim 6, Registering a plurality of mobile terminal numbers as the emergency call number list; And setting a sequence number to the registered mobile terminal number. The method of claim 6, The emergency call SMS message includes emergency call information. The method of claim 9, Upon receiving the emergency call SMS message, displaying a selection screen on whether to answer the emergency call SMS message based on the emergency call information; And transmitting a response message according to the selection result to the calling mobile terminal. The method of claim 10, And the response message includes a message indicating whether call answering is possible or not. A computer readable storage medium storing computer executable instructions for performing an emergency call method of a mobile terminal using an SMS message function. The method, Selecting an emergency call provided in the SMS message function; Reading a list of emergency call numbers previously stored; Sequentially transmitting an emergency call SMS message to the mobile terminal number of the emergency call number list; And stopping an emergency call when a response message from any one mobile terminal that has received the emergency call SMS message is received.

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