KR100837510B1 - Method and system for providing video phone notification service - Google Patents

Abstract

A method and system for providing a video call notification service are disclosed. The method comprises the steps of: a) the originating terminal originating a call to the called terminal; b) determining, by the video call notification device, whether the calling terminal and the called terminal are a video terminal and whether the video call notification service is subscribed to the video call notification service; And c) transmitting a video call notification message to the calling terminal informing that the video call notification device can make a video call with the called terminal. Therefore, when it is not known whether the called terminal supports the video call service, when the calling terminal makes a voice call, a message indicating whether the video call notification device can make a video call with the called terminal is sent to the calling terminal. By transmitting, the calling terminal can redial the video call and make a video call with the called terminal.

Video call, network, voice call, video call

Description

METHOD AND SYSTEM FOR PROVIDING VIDEO PHONE NOTIFICATION SERVICE}

1 is a block diagram of a system for providing a video call notification service according to an embodiment of the present invention.

2 to 4 are diagrams for explaining a parameter according to an embodiment of the present invention.

5 is a flowchart illustrating a method of changing subscriber information during service registration according to an embodiment of the present invention.

6 is a flowchart illustrating call processing of voice call origination in a VoIP packet network according to an embodiment of the present invention.

7 is a call processing flowchart of voice call origination in a third generation telecommunication network according to an embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

100; Calling terminal 150; Incoming terminal

200; Communication network 210; Base station

220; Base station controller 230; Calling Home Location Register

235; Called party home location register 240; Outgoing exchange

245; Destination exchanger 300; Video call notification device

310; Service determination unit 320; Message transmitter

321; Short message service 322; Multimedia message service

The present invention relates to a method and a system for providing a video call notification service. More particularly, when the calling terminal, which is a video terminal, transmits a voice call, the called terminal is also a video terminal capable of performing a video call. The present invention relates to a method and system for providing a video call notification service for transmitting a message indicating that it is possible to perform a video call to a calling terminal so that the calling terminal can retry a video call with the called terminal.

Wireless mobile communication technology has evolved into GSM, GPRS, and WCDMA networks standardized at the 3rd Generation Partnership Projects (3GPP) International Standardization Conference. , CDMA20001x, CDMA1x-EVDO.

Among these wireless mobile communication technologies, in the case of the IMT-2000 network, the synchronous IMT-2000 is called CDMA2000 1x-EVDO, and the asynchronous IMT-2000 is called WCDMA.

On the other hand, for video telephony service, WCDMA network is provided based on wired circuit network, and part of ITU-T H.324 protocol standard is changed to 3GPP standardization organization for wireless circuit network and standardized to 3G-324M protocol standard. On the other hand, in the CDMA2000 1x-EVDO network, the ITU-T H.323 protocol standard used in the wired packet network is used for the wireless packet network without a separate standard specification in the wireless network.

However, video telephony services, unlike the speed of development of video telephony technology, are not very popular due to the fact that personal privacy is exposed.

Therefore, even if the calling terminal is a video terminal that supports the video service, it is common to make a voice call regardless of whether or not the called terminal supports the video service. That is, the calling terminal has a problem in that the called terminal cannot use the video service properly because it cannot know whether the video calling service is supported.

The present invention has been made to solve the above problems, and an object of the present invention is that when a called terminal supports a video telephone service at the time when the calling terminal attempts a voice call, the called terminal supports a video telephone service. The present invention provides a method and system for providing a video call notification service to notify a calling terminal of a fact so that a video call service can be provided between a calling terminal and a called terminal.

According to an aspect of the present invention, there is provided a video telephone service providing method comprising the steps of: a) a calling terminal making a call to a called terminal; b) determining, by the video call notification device, whether the calling terminal and the called terminal are a video terminal and whether the video call notification service is subscribed to the video call notification service; And c) transmitting a video call notification message to the calling terminal informing that the video call notification device can perform a video call with the called terminal, wherein b) includes: b-1) calling. The side exchange receives a predetermined parameter from the calling-home home location register, the predetermined field including a first field indicating whether to subscribe to a video call service and a second field indicating whether to subscribe to a video call notification service, and receiving the received parameter from the called-side home location register. Transmitting to; b-2) the receiving party's home location register checks whether the first field and the second field of the calling party of the parameter received from the calling exchange are set to an active state, Checking whether the first field and the second field are set to an active state; b-3) when both the first field and the second field corresponding to the called party and the calling party are set to an active state, the called party home location register provides a video call notification service to the calling terminal. Requesting the device; And b-4) generating, by the video call notification device, the video call notification message in response to a request of the called party's home location register.

And a video telephone service providing system according to the present invention for achieving the above object is a system for providing a video call notification service, the system, whether or not the calling terminal is subscribed to the video call service A switch that receives a predetermined parameter from the calling-home home location register, the predetermined field comprising a first field indicating < RTI ID = 0.0 > and < / RTI >; A home position confirming whether the first field and the second field are set to an activated state and whether the first field and the second field for the called terminal are set to an activated state through the parameter received from the exchange Register; And a video call notification device for transmitting a video call notification message to the calling terminal informing that the calling terminal can make a video call with the called terminal at the request of the called party's home location register. The registrar notifies the video call notification device to provide a video call notification service to the calling terminal when both the first field and the second field of the calling terminal and the called terminal are set to an activated state as a result of the confirmation. Characterized by request.

In addition, the video call notification device according to the present invention for achieving the above object, when the calling terminal originates a call to the called terminal, the service determination to determine whether the called terminal is a video terminal that supports the video call service part; And a result of the determination that, when the called terminal is the video terminal, a message transmitter for transmitting a video call notification message to the calling terminal informing that the user can perform a video call with the called terminal.

Hereinafter, with reference to the accompanying drawings and preferred embodiments will be described in detail a method and system for providing a video call notification service according to an embodiment of the present invention. Like reference numerals designate like elements throughout the drawings.

First, a description will be given of the video call notification service providing system according to an embodiment of the present invention. 1 is a block diagram of a system for providing a video call notification service according to an embodiment of the present invention.

As shown in FIG. 1, a system for providing a video call notification service according to an embodiment of the present invention includes a calling terminal 100, a called terminal 150, a communication network 200, and a video call notification device 300. Include.

The calling terminal 100 refers to a calling terminal that sends a call, and the called terminal 150 refers to a called terminal connected to the call through the communication network 200.

In addition, after receiving the voice call, the calling terminal 100 may redial the video call when receiving the video call notification message. On the other hand, the process of receiving a video call notification message will be described below.

The communication network 200 includes both wired and wireless communication networks, and includes a base station 210, a base station controller 220, home location registers 230 and 235, exchangers 240 and 245, and the like.

Meanwhile, the present invention will be described using VoIP packet communication systems such as SIP and H.323 standards and third generation mobile communication systems such as 3G.324M standards as examples. In addition, each parameter presented in the present invention will be described.

ServiceID defines the type of service provided to the calling terminal 100, as shown in FIG. The video call service is defined as a first field and the video call notification service is defined as a second field.

SFI (ServiceFeatureIndicator) defines the activation state for the characteristics of the calling party and the called party, in particular, O_SFI means the calling party and T_SFI means the called party.

 According to an embodiment of the present invention, a first field and a second field are added to the SFI parameter for the video call notification service.

The first field may be a VCS (Video Call Service) field as a field indicating whether the video service is supported, and the second field is a field indicating whether the video call notification service is supported by the VPNT () field. Can be.

For example, as shown in FIG. 3 in the VoIP packet communication system, as shown in FIG. 4 in the third generation mobile communication system, the VCS field and the VPNT field are added.

Meanwhile, in the present invention, VCS_O and VPNT_O mean the calling party and VCS_T and VPNT_T mean the called party.

Base station 210, base station controller 220, home location registers 230, 235, and exchanges 240, 245 are common for voice and video call connections between originating terminal 100 and destination terminal 150. The call processing process is performed, which is the same as the known technology, and thus the detailed description thereof will be omitted and only the features for the video call notification service of the present invention will be described.

The home location register includes a calling party home location register 230 and a called party home location register 235 and may set parameters for the calling terminal 100 and the called terminal 150 based on the service subscription information.

Meanwhile, the service subscription information includes information indicating whether the calling terminal 100 and the called terminal 150 are subscribed to the video calling service and information indicating whether the calling terminal 100 is subscribed to the video call notification service.

And the fact that the terminal is subscribed to the video telephone service means that the terminal is a video terminal capable of performing a video telephone service, and the video call notification service is a called terminal when the calling terminal 100 attempts a voice call. If 150 is subscribed to the video telephone service, it means a service for notifying the calling terminal of this fact.

For example, the calling party home location register 230 sets the VCS_0 field to an active state when the calling terminal 100 is subscribed to the video telephone service based on the subscriber information. If the video call notification service is subscribed, the VPNT_O field is set to an active state.

In addition, when the originating terminal 100 originates a voice call, the originating home location register 230 transmits the set O_SFI parameter to the originating exchange 240.

The called party home location register 235 sets the VCS_T field to an active state when the called terminal 150 is subscribed to the video call service, and the called terminal 150 is subscribed to the video call notification service. If present, set the VPNT_T field to active.

In addition, the called party home location register 235 transmits additional service information to be provided to the calling terminal 100 to the video call notification device 300 when the service providing condition is satisfied.

That is, the called party home location register 235 checks whether the VCS_0 field and the VPNT_O field are set to the active state through the O_SFI parameter received from the calling exchange 240, and whether the VCS_T field and the VPNT_T field are set to the activated state. Check it.

The called party home location register 235 then checks whether the called terminal 150 is roaming in a communication network capable of performing a video call.

For example, when the called terminal 150 is subscribed to a video terminal of SIP or H.323, the called terminal home location register 235 checks whether the called terminal 150 is registered in the VoIP packet network. If the terminating terminal 150 is subscribed to the video terminal of 3G.324M, the terminating terminal 150 checks whether the terminating terminal 150 is registered in the third generation mobile communication network.

And preferably, the called party home location register 235 confirms the called terminal state. That is, it is checked whether or not the call transfer is set for the called terminal 150 and whether the power of the called terminal is turned off.

The called party home location register 235 sets the service information as the video call notification service (ServiceID = VPNT) when the following condition is satisfied, and transmits the service information to the video call notification device 300.

First, the VCS_0 field, the VPNT_O field, and the VCS_T should be set to an activated state, and preferably, the VPNT_T should also be set to an activated state.

Second, if the called terminal 150 is subscribed to a video terminal of SIP or H.323, the called terminal 150 must be registered in the VoIP packet network, and the called terminal 150 is connected to the video terminal of 3G.324M. In the case of subscription, the terminating terminal 150 should be registered in the third generation mobile communication network.

On the other hand, preferably, when call forwarding is set for the called terminal 150 or the power of the called terminal is turned off, the called-side home location register 235 is irrespective of whether the first and second conditions are satisfied. The video call notification service process may be terminated.

The exchange includes an originating exchange 240 and a destination exchange 245, the originating exchange 240 receiving the O_SFI parameters from the originating home location register 230 and receiving the received O_SFI parameters. Send to home location register 235.

The video call notification device 300 checks the service information received from the called party's home location register 235 and provides the confirmed additional service to the calling terminal 100.

That is, the video call notification device 300 includes a service determiner 310 and a message transmitter 320.

The service determination unit 310 determines whether the called terminal 150 is subscribed to the video telephone service when the calling terminal 100 transmits a voice call. That is, the service information received from the called party home location register 235 is confirmed.

The message transmitter 320 transmits the video call notification message to the calling terminal 100 when the called terminal 150 is subscribed to the video call service. That is, when the service determination unit 310 confirms that the received service information is video call notification service information (when SVCID = VPNT), the video call notification message is transmitted to the calling terminal 100.

The video call notification message includes information indicating that the user can make a video call with the called terminal 150. The video call notification message may be a short message service (SMS) 321 or a multimedia message service (MMS). , 322 may be transmitted to the calling terminal 100.

Hereinafter, a method for providing a video call notification service according to an embodiment of the present invention will be described in detail.

5 is a flowchart illustrating a method of changing subscriber information during service registration according to an embodiment of the present invention.

As shown in Fig. 5, the originating terminal 100 and the terminating terminal 150 are registered in the video call service and the video call notification service by setting the first field and the second field of the SFI parameter.

For example, when the home location registers 230 and 235 and the terminating terminal 150 are subscribed to the video telephone service, the VCS field of the SFI parameter is set to an active state.

In addition, the home location registers 230 and 235 set the VPNT field of the SFI parameter to an active state when the calling terminal 100 and the called terminal 150 are subscribed to the video call notification service.

The home location registers 230 and 235 then transmit a predetermined message composed of the SFI parameters including the VCS field and the VPNT field set to an active state to the exchange.

6 is a call processing flowchart in a VoIP packet communication system according to an embodiment of the present invention, and FIG. 7 is a call processing flowchart in 3 according to an embodiment of the present invention.

 When the originating terminal 100 roaming in the VoIP packet communication network makes a voice call, the originating exchange 240 is sent from the originating home location register 230 with a predetermined message (LOCREQ [Digits (dialed)). ), CPND, O_SFI (VCS, VPNT_0)]), and transmits the received message to the called party's home location register 235 (S610).

When the calling terminal 100 roaming in the third generation mobile communication network makes a voice call, the calling side exchange 240 sends a predetermined message (SRI [) including the SFI parameter from the home location registers 230 and 235. Digits (dialed), CPND, O_SFI (VCS, VPNT_0)]), and transmits the received message to the called party's home location register 235 (S710).

The SFI parameter may include a first field indicating whether to subscribe to a video call service and a second field indicating whether to subscribe to a video call notification service, and the first field and the second field may be represented by VCS and VPNT, respectively. In the following description, VCS and VPNT will be described.

In the case of the VoIP packet communication network and the third generation mobile communication network, the called party home location register 235 analyzes the predetermined message received from the calling party home location register 230 and is included in the 0_SFI parameter as a result of the analysis. Check that the VCS_O field and the VPNT_O field are set to enabled.

In addition, the called party home location register 235 checks whether the VCS_T field and the VPNT_T field of the SFI parameter set for the called terminal 100 registered in the called party home location register 235 are set to an active state.

As a result of the check, the called party home location register 235 provides the video call notification service to the calling terminal 100 when the VCS_O field, the VPNT_0 field, the VCS_T field, and the VPNT_T field are set to an active state. Request the video call notification device 300 (S610 and S710).

On the other hand, preferably, the called party home location register 235 further checks whether the called terminal 150 is roaming in a communication network capable of performing a video call.

For example, if the terminating terminal 150 is a SIP video terminal or an H.323 video terminal, the terminating terminal 150 should be registered in a VoIP packet communication network. If the terminating terminal 150 is a 3G.324M video terminal, Location must be registered on the third generation mobile network.

 As a result of the check, the incoming call terminal 150 may request the video call notification device 300 to provide a video call notification service to the calling terminal 100 only when the called terminal 150 is roamed in the communication network.

For example, the called party home location register 235 sets a service ID as a video call notification service (ServiceID = VPNT), and transmits a message including the service ID set as described above to the video call notification device 300.

 The video call notification device 300 provides the video call notification service to the calling terminal 100 according to a request of the called party's home location register 235. That is, a video call notification message indicating that it is possible to perform a video call with the called terminal 150 is transmitted to the calling terminal (S630 and S730).

For example, the video call notification device 300 receives a message including the service ID from the called party's home location register 235 and sets the service ID as the video call notification service through the received message (ServiceID = VPNT). Check if When the service ID is set as the video call notification service, the video call notification message is transmitted to the calling terminal 100.

Meanwhile, the video call notification message may be transmitted to the calling terminal 100 through the short message service (SMS) 321 or the multimedia message service (MMS) 322.

The calling terminal 100 receiving the video call notification message transmits a video call again, and the communication network 200 terminates the voice call connection process between the calling terminal 100 and the called terminal 150 and terminates the call to Mars. Reconnect. On the other hand, since the process of connecting the image call is the same as the known technology will not be described in detail.

On the other hand, preferably, when the called party home location register 235 receives the predetermined message including the SFI parameter from the calling exchange 240, the called party before checking the first field and the second field. The state of the terminal 150 may be checked first, and the video call notification service process may be terminated.

That is, when call forwarding is set for the called terminal 150 or the power of the called terminal 150 is turned off, the called party's home location register 235 transmits a video call notification message to the calling terminal 100. The video call notification device 300 is not requested.

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various changes or modifications can be made.

As described above, according to the method and system for providing the video call notification service of the present invention, when the calling terminal makes a voice call in a situation where it is not known whether the called terminal supports the video call service, the video call notification device receives the call. By sending a message indicating whether the video call can be made with the terminal to the calling terminal, the calling terminal can redial the video call to make a video call with the called terminal.

Claims (13)

a) the originating terminal originating a call to the called terminal; b) determining, by the video call notification device, whether the calling terminal and the called terminal are a video terminal and whether the video call notification service is subscribed to the video call notification service; And c) transmitting a video call notification message to the calling terminal informing that the video call notification device can make a video call with the called terminal. The method of claim 1, wherein after step c) d) the calling terminal receiving the video call notification message and sending a video call; And e) a video call is connected between the calling terminal and the called terminal. The method of claim 1 or 2, wherein b) b-1) the calling exchange receives a predetermined parameter from the calling home location register comprising a first field indicating whether to subscribe to a video call service and a second field indicating whether to subscribe to a video call notification service, and receiving the received parameter. Transmitting to the called party's home location register; b-2) the receiving party's home location register checks whether the first field and the second field of the calling party of the parameter received from the calling exchange are set to an active state, Checking whether the first field and the second field are set to an active state; b-3) when both the first field and the second field corresponding to the called party and the calling party are set to an active state, the called party home location register provides a video call notification service to the calling terminal. Requesting the device; And b-4) generating, by the video call notification device, the video call notification message according to a request of the called party's home location register. The method of claim 1 or 2, wherein after step b) Iv) the video call notification device determining whether the called terminal is roaming in a communication network capable of making a video call, and as a result of the determination, roaming in the communication network in which the called terminal can make a video call. And if step c) is performed, providing a video call notification service. The method of claim 4, wherein Determining whether the called terminal is a SIP video terminal or an H.323 video terminal, and whether the called terminal is a 3G.324M terminal; And And if the called terminal is a SIP video terminal or an H.323 video terminal, determining whether the called terminal is registered in a VoIP packet communication network. The method of claim 4, wherein Determining whether the called terminal is a 3G.324M terminal; And And determining whether the called terminal is registered in a third generation mobile communication network when the called terminal is a 3G.324M terminal. The method of claim 1 or 2, wherein step c) Requesting, by a service determination unit of the video call notification device, a message transmission unit of the video call notification device to transmit the video call notification message to the calling terminal; And And transmitting, by the message transmitter, the video call notification message to the calling terminal by using a message service in response to a request of the video call notification device. A system for providing a video call notification service, the system comprising When the calling terminal originates a call, it receives a predetermined parameter from the calling home location register comprising a first field indicating whether it is subscribed to a video call service and a second field indicating whether it is subscribed to a video call notification service. And a switch for transmitting the received parameter to a called party's home location register. A called party that checks whether the first field and the second field are set to an active state and the first field and the second field for the called terminal are set to an activated state through the parameter received from the exchange Home location register; And And a video call notification device for transmitting a video call notification message to the calling terminal informing that the calling terminal can make a video call with the called terminal according to a request of the called party's home location register. The called party's home location register is to provide a video call notification service to the calling terminal when both of the first terminal and the second field of the calling terminal and the called terminal are set to an active state as a result of the confirmation. A video call notification service providing system, characterized by requesting a video call notification device. 9. The system of claim 8, wherein the called party home location register is Further check whether the called terminal is roaming in a communication network capable of making a video call, and if it is confirmed that the called terminal is roaming in a communication network capable of making a video call, a video call notification service is provided to the calling terminal. And requesting a video call notification device to provide. 10. The system of claim 8 or 9, wherein the called party home location register Before retrieving the parameter, check whether the call forwarding is set for the called terminal, and if the call transfer is not set for the called terminal, the parameter is searched. Notification service provision system. 10. The apparatus of claim 8 or 9, wherein the exchanger It is determined whether the calling terminal that has received the video call notification message has sent a video call, and if it is determined that the calling terminal has called the video call, connecting the video call between the calling terminal and the called terminal. And a video call notification service providing system. A service determining unit determining whether the called terminal is a video terminal that supports a video call service when the calling terminal sends a call to the called terminal; And And, as a result of the determination, when the called terminal is the video terminal, a video call notification unit configured to send a video call notification message to the calling terminal, informing that the user can make a video call with the called terminal. Device. The method of claim 12, wherein the service determination unit It is further determined whether the called terminal is roaming in a communication network capable of making a video call, and if it is determined that the called terminal is the video terminal and roams in the communication network, the video call notification message is transmitted to the calling terminal. The video call notification device, characterized in that.

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