KR101395191B1

KR101395191B1 - Method for connecting telephone with visitor

Info

Publication number: KR101395191B1
Application number: KR1020080044294A
Authority: KR
Inventors: 김종득
Original assignee: 주식회사 엘지유플러스
Priority date: 2008-05-14
Filing date: 2008-05-14
Publication date: 2014-05-15
Also published as: KR20090118480A

Abstract

The present invention relates to a telephone connection method with a visitor. When a call signal by a visitor is inputted, the door lock communication terminal transmits a call connection request signal to the mobile communication terminal corresponding to the telephone number by using the pre- (Evolution-Data only) packet network server according to a set protocol, and when the EV-DO packet network server receives a call connection request signal from the door-lock communication terminal, the pre-stored session setup information is checked A second step of transmitting a paging signal according to a predetermined protocol to the mobile communication terminal, and a third step of establishing a call connection between the doorlock communication terminal and the mobile communication terminal when the mobile communication terminal accepts the paging signal.

Visitor, phone connection

Description

{Method for connecting telephone with visitor}

The present invention relates to a telephone connection method with a visitor, and more particularly, to a telephone connection method with a visitor who can make a telephone conversation with a visitor when a call signal is input by a visitor.

EV-DO (Evolution-Data only), which was recently introduced due to the development of mobile communication technology, was developed to supplement the slow data transmission speed in CDMA (Code Division Multiple Access) 2000 1x network. ) -95, the CDMA2000 system structure eliminates the inefficiency of providing data service based on voice service, and is a technology that partially changes the wireless access technology from the viewpoint of data communication.

This EV-DO system enables real-time video and video telephony services.

Accordingly, in recent years, CDMA2000 1X network and EV-DO network are used together to provide voice communication service through CDMA2000 1X network and provide data service through EV-DO network.

However, when the CDMA2000 1X network and the EV-DO network are used together, the mobile communication terminal scans the CDMA2000 1X network and the EV-DO network signal every 5 seconds, and determines whether a call connection request signal is inputted.

Therefore, there is a problem in that a delay time of 2 ~ 3 seconds is averaged before the call setup according to such a scan.

Further, there is a problem that a delay time occurs in a session setup process of setting a parameter such as codec information for a telephone connection.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a telephone connection service between a door-lock communication terminal and a mobile communication terminal through an EV-DO packet network and to set up session setup information in advance for quick telephone connection, Of the present invention.

Accordingly, when a call signal is input by a visitor, the door lock communication terminal makes a call connection request with a mobile communication terminal corresponding to the telephone number using a pre-stored telephone number, A first step of transmitting a signal to an EV-DO (Evolution-Data only) packet network server according to a predetermined protocol; A second step of confirming pre-stored session setup information when the EV-DO packet network server receives the call connection request signal from the door lock communication terminal and transmitting a call signal to the mobile communication terminal according to the preset protocol ; And a third step of establishing a call connection between the door lock communication terminal and the mobile communication terminal when the mobile communication terminal accepts the paging signal.

In the second step, the session setup information includes at least one of audio codec information, video codec information, and protocol information.

In the third step, the communication between the door lock communication terminal and the mobile communication terminal is a video call.

According to the present invention, there is no need to perform a session setup (call setup) process, which was previously required for telephone conversation between terminals, by previously setting parameters such as codec information necessary for telephone connection between the door lock communication terminal and the mobile communication terminal So that a quick telephone connection between the door lock communication terminal and the mobile communication terminal becomes possible.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a diagram showing a configuration of a telephone connection system with a visitor to which the present invention is applied, and FIG. 2 is a block diagram showing a detailed configuration of a door lock communication terminal of FIG.

1, the telephone connection system includes a door lock communication terminal 100, a first base station 110, an EV-DO (Evolution-Data only) packet network 120, a second base station 130, And a communication terminal 140.

The door lock communication terminal 100 is installed in a doorway outside the home or company, and controls access to / from a guest, and is a device capable of making a telephone call. The codec and the communication protocol are predefined and communication is performed according to a predetermined communication protocol.

Also, the door lock communication terminal 100 stores a telephone number corresponding to a user's mobile communication terminal 140 that controls entry / exit of a passenger, and a call signal is input from all visitors to identify a visitor or visitor who is absent The first base station 110 may transmit a call connection request signal to the mobile communication terminal 140 using the previously stored telephone number.

2, the door lock communication terminal 100 includes a camera unit 210, a voice input / output unit 220, a display unit 230, a signal transmission / reception unit 240, a door lock setting unit 250, An alarm unit 260, a keypad unit 270, and a control unit 280.

The camera unit 210 includes a camera 211 supporting at least 300,000 pixels and an image processing unit 213 for converting the image captured by the camera into image data. The image processor 213 preferably encodes or decodes a signal according to a preset audio or video codec.

The voice input / output unit 220 converts a digital voice signal received from the outside into an analog voice signal, amplifies the analog voice signal, and outputs the analog voice signal to the speaker 223 or converts the analog voice signal input from the microphone 221 into a digital voice signal.

The signal transmission and reception unit 240 transmits a call connection request signal with the mobile communication terminal 140 corresponding to the pre-stored telephone number to the first base station 110 according to a predetermined protocol when a call signal by the visitor is input do. The call connection request signal includes identification information for identifying itself.

The signal transmitting and receiving unit 240 transmits the image data output from the camera unit 211 and the voice signal processed by the voice input and output unit 220 to the first base station 110 through wireless communication, 1 base station 110 through a wireless communication.

The door lock setting unit 250 locks or unlocks the door according to the control signal.

The alarm unit 260 generates a ring tone when a call signal is input by a visitor. However, when a telephone call connection is established for the call signal, when the call signal is input, a voice message is issued to notify the telephone connection.

The keypad unit 270 includes function keys including various numbers and a call key for a call.

The control unit 280 controls the respective units and generates an operation command corresponding to the key selected by the keypad unit 270.

The first base station 110 supports wireless section communication between the door lock communication terminal 100 and the EV-DO packet network 120.

The second base station 130 supports wireless section communication between the EV-DO packet network 120 and the mobile communication terminal 140.

The EV-DO (Evolution-Data only) packet network 120 includes a server 121, supports voice communication and data communication, and includes a codec for transmitting and receiving signals with the door lock communication terminal 100, In advance.

More specifically, the EV-DO packet network 120 sets a communication protocol for transmitting and receiving signals with the door lock communication terminal 100 in advance, and forms a communication channel between the door lock communication terminal 100 and the mobile communication terminal 140 The session setup information including parameter information such as codec information necessary for the session is set in advance. The door lock communication terminal 100 transmits a signal according to the predetermined communication protocol. When the server 121 of the EV-DO packet network 120 receives a signal according to the predetermined communication protocol, It is determined that the signal is a signal transmitted from the communication terminal 100 and the previously stored session setup information is confirmed. At this time, information on the predetermined protocol is also stored in the mobile communication terminal 140.

The mobile communication terminal 140 includes a camera unit for capturing an external image or a video of a user and converting the captured video signal into video data, which is carried by a user controlling input and output of a door provided with the door lock communication terminal 100, (Not shown) and is capable of a video call with a visitor.

The mobile communication terminal 140 receives a call connection request signal according to a predetermined protocol and accepts the call connection request signal to decode a signal received through a predetermined codec and outputs the voice signal through a speaker, The video signal is displayed on the screen. The audio and video signals are encoded and transmitted to the second base station 130 according to a predetermined protocol.

In the telephone connection system configured as described above, signal transmission / reception between the door lock communication terminal 100 and the EV-DO packet network 120 and signal transmission / reception between the EV-DO packet network 120 and the mobile communication terminal 140 are preset Communication protocol.

Particularly, in the present invention, the EV-DO packet network 120 is required to transmit signals between the door lock communication terminal 100 and the EV-DO packet network 120, and between the EV-DO packet network 120 and the mobile communication terminal 140 And session setup information including parameter information such as codec information is stored in advance. Accordingly, the call connection request signal transmitted by the door lock communication terminal 100 does not include information for session setup, so that the signal length is shortened. In addition, since the session setup information is stored in advance, there is no need to perform a session setup (call setup) process for connecting the door lock communication terminal 100 and the mobile communication terminal 140. Accordingly, a quick telephone conversation between the door lock communication terminal 100 and the mobile communication terminal 140 is possible.

3 is a flowchart illustrating an example of a general procedure for establishing a telephone connection with a visitor. In FIG. 3, a process of establishing a telephone connection by transmitting a signal according to a SIP (Session Initiation Protocol) is shown.

The door lock communication terminal transmits an INVITE message to a SIP (Session Initiation Protocol) server when a call signal by a visitor is input (S301). The INVITE message includes codec information, protocol information, terminal information, and pre-stored telephone numbers.

Upon receiving the INVITE message from the door-lock communication terminal, the SIP server transmits an INVITE message to the mobile communication terminal corresponding to the stored phone number (S303), and transmits a message 100 indicating that the INVITE message of the door- TRYING message to the door lock communication terminal (S305).

When receiving the INVITE message from the SIP server, the mobile communication terminal transmits a 180 RINGING message to the SIP server (S307) while informing that the phone is ringing or vibrate, and the SIP server receives 180 RINGING and transmits it to the door lock communication terminal (S309), the door lock communication terminal generates a transmission tone.

When the user makes a call request, the mobile communication terminal transmits a 200 OK message to the SIP server (S311). The SIP server receives the 200 OK message and transmits the 200 OK message to the door lock communication terminal (S313).

Then, the door lock communication terminal transmits an ACK message to the SIP server informing that the telephone connection is normal (S315), and the SIP server receives the ACK message and transmits the ACK message to the mobile communication terminal (S317).

Accordingly, voice and video data (in the case of a video telephone call) is transmitted and received between the door lock communication terminal and the mobile communication terminal and a video communication is performed (S319).

Meanwhile, in order to establish a telephone connection as in step S319, a session setup process (steps S301 to S317) must be performed between terminals. The INVITE message includes audio and video codec information, protocol information, and various parameter information required for session setup. The INVITE message includes a session setup process for matching a codec and a protocol to enable a telephone connection between a door-lock communication terminal and a mobile communication terminal .

4 is a flowchart illustrating a method of connecting a telephone with a visitor according to the present invention.

When a call command signal is input by the visitor, the door lock communication terminal 100 transmits a call connection request signal to the mobile communication terminal 140 corresponding to the telephone number using the pre-stored telephone number, To the server 121 of the -DO packet network 120 (S401, S403).

The server 121 confirms previously stored session setup information when receiving a call connection request signal according to a predetermined protocol from the door lock communication terminal 100 in operation S405 and transmits the setup information to the mobile communication terminal 140 And transmits a paging signal (S407).

Upon receiving the paging signal from the server 121, the mobile communication terminal 140 informs the user that the paging signal has been received by vibration or ringing. If the user accepts the paging signal, the mobile communication terminal 140 transmits an acceptance signal To the server 121 (S409). Meanwhile, when the user is in a call, the mobile communication terminal 140 may transmit a signal to the server 121 indicating that it is busy.

The server 121 receives an acceptance signal in response to the paging signal from the mobile communication terminal 140 and a communication channel is established between the doorlock communication terminal 100 and the mobile communication terminal 140 to perform a telephone conversation do.

Meanwhile, in the telephone connection method between the door lock communication terminal and the mobile communication terminal according to the present invention, the length of the message (signal) transmitted according to the SIP protocol is reduced by applying various parameters required for the session setup, The transmission / reception message can be utilized only as a request and as a response message in response to the request. For example, the messages of steps S301 to S317 of FIG. 3 are transmitted and received in the same manner, and information included in each message may be omitted or briefly included. That is, the INVITE message in step S301 may include codec information and protocol information, and may include terminal information and pre-stored phone numbers.

As a result, according to the present invention, a session setup process for forming a communication channel between a door lock communication terminal and a mobile communication terminal can be omitted or simplified, and a call connection with a visitor can be performed quickly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims. And can be changed. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

1 is a view showing a configuration of a telephone connection system with a visitor to which the present invention is applied,

FIG. 2 is a block diagram showing a detailed configuration of the door lock communication terminal of FIG. 1;

FIG. 3 is a flowchart showing a general procedure for a telephone connection with a visitor as an example;

Claims

A first step of transmitting a call connection request signal with a mobile communication terminal corresponding to the telephone number to a packet network server according to a predetermined protocol by using a stored telephone number when a call signal by a visitor is inputted, ;

A second step of confirming pre-stored session setup information when the packet network server receives the call connection request signal from the door lock communication terminal and transmitting a call signal to the mobile communication terminal according to the predetermined protocol; And

And a third step of establishing a call connection between the door lock communication terminal and the mobile communication terminal when the mobile communication terminal accepts the paging signal.

The method according to claim 1,

In the second step, the session setup information includes

The audio codec information, the audio codec information, the video codec information, and the protocol information.

The method according to claim 1,

And the call between the door lock communication terminal and the mobile communication terminal in the third step is a video call.