KR20080065053A - System and method of short message service for voip user - Google Patents

Abstract

A short message service system and method for VoIP(Voice over Internet Protocol) subscribers are provided to extend a VoIP service coverage beyond a VoIP service centered on simple voice calls and improve user convenience of the VoIP service. A SSW(Soft Switch)(15-1) is connected with VoIP terminals(11-1) using an SIP(Session Initiation Protocol) method via a VoIP network(13), routes a short message transmitted by the VoIP terminals to a VoIP SMSC(Short Message Service Center) or transfers a short message received from the VoIP SMSC to the VoIP terminals. An SMS GW(Gateway)(15-3) performs interfacing to allow the VoIP SMSC to send and receive a short message to and from a wired/wireless network(14). The VoIP SMSC(Short Message Center)(15-2) determines a destination number of the short message received from the SSW, transfers it to the SMS GW, or transfers a short message received from the SMS GW to the SSW.

Description

메시지 ｏｌｐ Short message service system and method for subscribers {System and Method of Short Message Service for VoIP User}

1 is an embodiment of a short message service system according to the present invention;

2 is an embodiment of a short message service method according to the present invention;

3 is another embodiment of a short message service method according to the present invention.

* Explanation of symbols for main parts of the drawings

11-1,11-2: VoIP terminal 12-1: wireless terminal

12-2: Wired Terminal 13: VoIP Network

14: wired / wireless telephone network 15: short message service system

15-1: Soft Switch 15-2: VoIP Short Message Center

15-3: SMS Gateway

The present invention relates to a short message service system and method for a VoIP subscriber, and in particular, a VoIP terminal connected to a VoIP network gives a short message to a terminal connected to another wired telephone network (PSTN) or a mobile communication network as well as a VoIP network. To receive it.

Due to the development of communication technology, a call service, which was conventionally performed only through a public switched telephone network (PSTN) or a mobile communication network, can be provided through an IP (Internet Protocol) network such as the Internet network.

VoIP (Voice Over Internet Protocol) service system is a system that provides subscribers with two-way voice service through a public internet network, and various users such as personal computer (PC) and personal digital assistant (PDA). Allows terminals to connect to IP networks and talk to each other.

Protocols currently used in VoIP service systems include Session Initiation Protocol (SIP) announced by the Internet Engineering Task Force (IETF) and H.323 established by the International Telecommunication Union-Telecommunication standardization sector (ITU-T).

Here, SIP is a text-based application layer control protocol for performing a session or call setup and termination for communication such as video or voice, and can be used in various applications such as teleconference, telephone, meeting, instant messaging, and the like.

On the other hand, with the diversification of communication services, short message services are being actively provided in order to exchange short messages between various terminals in addition to voice call services.

Such a conventional short message service is limitedly provided only between a wireless telephone user, some landline telephone users, a transmission-oriented web user, or some VoIP terminals. However, with the development of VoIP technology, the granting of 070 numbers and the incoming / outgoing service between VoIP terminals, VoIP subscribers can freely exchange short messages with other VoIP subscribers as well as wired / wireless communication service subscribers. The need is growing.

Accordingly, the present invention has been made in order to meet the necessity as described above, by using a VoIP terminal connected to the VoIP network to be able to freely send and receive a short message with the terminal connected to any network, such as a wired telephone network (PSTN) or mobile communication network It is an object of the present invention to provide a short message service system and method.

In order to achieve the above object, a short message service system for a VoIP subscriber according to the present invention is connected to a VoIP terminal using a SIP (Session Initiation Protocol) method and a VoIP network, and the short message transmitted by the VoIP terminal A soft switch for routing a message to a VoIP Short Message Center (SMSC) or delivering a short message delivered from the VoIP Short Message Center (SMSC) to the VoIP terminal; An SMS gateway for interfacing the VoIP short message center to exchange a short message with a wired or wireless telephone network; And a VoIP Short Message Center (SMSC) which determines the called number of the short message received from the soft switch and transmits it to the SMS gateway, or forwards the short message received from the SMS gateway to the soft switch.

When transmitting the short message, the VoIP terminal may be configured to insert the identification message (Prefix) indicating that the short message is inserted into the SIP Request URI and transmit the short message.

The soft switch may be configured to route the short message received from the VoIP terminal to the VoIP short message center (SMSC) using the SIP extension method MESSAGE.

The SIP extension method MESSAGE may be configured to include an extension header for indicating one or more of a caller identification number and a callback number.

On the other hand, the short message service method for a VoIP subscriber according to the present invention comprises the steps of: receiving a short message transmission request transmitted by a VoIP terminal using a SIP method by a soft switch connected to a VoIP network; The soft switch routing the short message transmission request to a VoIP short message center (SMSC); Analyzing, by a VoIP Short Message Center (SMSC), a destination number of the short message transmission request and transmitting the SMS number to an SMS gateway connected to a wired / wireless telephone network; And transmitting, by the SMS gateway, the short message to the called party terminal through the wired / wireless telephone network.

When the VoIP terminal transmits a short message, the VoIP terminal adds and transmits identification information indicating a short message to a SIP Request URI, and the soft switch is configured to determine that the short message is a transmission request through the identification information. Can be.

The soft switch may be configured to route the short message received from the VoIP terminal to the VoIP short message center (SMSC) using the SIP extension method MESSAGE. In this case, the SIP extension method MESSAGE may be configured to include an extension header for indicating one or more of a caller identification number and a callback number.

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

Referring to FIG. 1, in the short message service system 15 for a VoIP subscriber according to the present invention, each VoIP terminal 11-1, 11-2 of a VoIP subscriber connected through a VoIP network 13 has a short message. In addition to allowing a user to send and receive a call, each VoIP terminal 11-1 and 11-2 is connected to a wireless terminal 12-1 or a wired terminal 12-2 connected to each other via a wired / wireless telephone network 14. Allows you to send and receive messages.

The VoIP terminals 11-1 and 11-2 connected to the VoIP network 13 may be configured in various ways. For example, VoIP programs may be applied to various terminals such as a personal computer (PC) or a personal information terminal (PDA). It may be a hard phone such as a mounted soft phone or an IP phone. In particular, the VoIP terminals 11-1 and 11-2 are terminals equipped with a Session Initiation Protocol (SIP) client function.

The wired / wireless telephone network 14 may include a wired telephone network or a mobile communication network such as a public switched telephone network (PSTN).

In this case, the wireless terminal 12-1 may be a portable mobile communication terminal such as a mobile phone connected to the mobile communication network, and the wired terminal 12-2 may be a general telephone terminal connected to the PSTN. At this time, the wireless terminal 12-1 and the wired terminal 12-2 are terminals configured to display the received short message or to input and transmit the short message.

The short message service system 15 for the VoIP subscriber according to the present invention includes a soft switch (SSW) 15-1, a short message service center (SMSC) 15-2 and an SMS gateway 15-3. It may be made, including.

Soft switch (SSW) 15-1 is a device that performs an interworking function between a packet network and a wired / wireless telephone network. The soft switch (SSW) 15-1 performs a signal processing and call processing between heterogeneous networks. The soft switch 15-1 controls the VoIP terminals 11-1 and 11-2 through the VoIP network 13, and makes a call connection between the VoIP terminal 11-1 and the VoIP terminal 11-2. In addition to the function, receiving a short message transmission request from the VoIP terminal and routing it to the VoIP short message center 15-2 or routing the short message received from the VoIP short message center 15-2 to the corresponding VoIP terminal. Do this.

The VoIP short message center 15-2 receives a short message transmission request from the soft switch 15-1 or the SMS gateway 15-3 and delivers the short message to the final destination. The VoIP short message center 15-2 terminates the SIP message, and converts the short message of the caller received from the soft switch 15-1 to a standard interface used in another network, or receives a short message received from another network. To convert the format into a format to be used in the VoIP network 13.

 In addition, the VoIP short message center 15-2 performs a store forwarding function so that the short message can stably reach the destination.

The SMS gateway 15-3 performs an interworking function with the wired / wireless telephone network 14 in connection with the transmission and reception of the short message.

That is, the SMS gateway 15-3 is a short message service system that provides a short message service in the wired / wireless telephone network 14 by converting the short message that is converted into a standard interface format from the VoIP short message center 15-2. (Not shown), or a short message in the reverse direction.

Now, an embodiment of a process of delivering a short message in a VoIP terminal (eg, 11-1), a soft switch 15-1, and a VoIP short message center 15-2 will be described in detail.

First, a situation in which the VoIP terminal 11-1 transmits a short message is described. In order to inform the soft switch 15-1 that the VoIP terminal 11-1 transmits a short message, it is necessary to identify the schedule. Information (Prefix) can be inserted into the SIP Request Uniform Resource Identifier (URI) and transmitted to the soft switch 15-1.

For example, assuming that the number assigned to the VoIP terminal 11-1 is '07075994224', a SIP message (hereinafter, referred to as MESSAGE) transmitted from the VoIP terminal 11-1 to the soft switch 15-1 is displayed. ) May be represented as "MESSAGE sip: 7107075994224@dacomas.com SIP / 2.0". Here, '71' at the beginning is used as identification information (Prefix).

In addition, when receiving the SIP MESSAGE sent by the soft switch 15-1 in the VoIP terminal (eg, 11-2), it may be displayed as "MESSAGE sip: 07075994224@dacomas.com SIP / 2.0".

That is, identification information (Prefix) may be used to distinguish whether the SIP message sent from the VoIP terminal 11-1 is a MESSAGE method defined in the SIP standard or a MESSAGE method for requesting a short message service.

At this time, the soft switch 15-1 may be configured to route the short message received from the VoIP terminal 11-1 to the VoIP short message center 15-2 using the SIP extension method MESSAGE.

That is, the soft switch 15-1 receiving the SIP MESSAGE transmitted by attaching the identification information (Prefix) in the VoIP terminal 11-1 determines that the short message service is requested by viewing the identification information (Prefix). MESSAGE, a SIP extension method, is used to route to the VoIP short message center 15-2.

The SIP extension method SIP MESSAGE may include one or more extension headers of a caller identification number and a callback number. This is because the SIP standard MESSAGE method does not have a method for prohibiting callback number display and caller ID display, and is configured to extend the SIP header to be used. As a result, the VoIP terminal 11-1 is conventionally performed between mobile phones. Allows free use of short message service.

As an example of the syntax for processing the extended header for the caller identification number, it may be configured as "Remote-Party-ID: <sip: 07075994222 @ TRUE; user = phone>; screen = yes; party = calling". Remote-Party-ID can be used to handle caller ID and caller ID.

In addition, as an example of the syntax for processing the extension header for the callback number, it may be configured as "UserParam: 07075994222" and the like, which may be used for specifying a callback number when transmitting a short message.

An embodiment of a short message service method for a VoIP subscriber according to the present invention will be described with reference to FIG. At this time, it is assumed that the short message is transmitted from the VoIP terminal 11-1, and the called terminal is the VoIP terminal 11-2, the wireless terminal 12-1, or the wired terminal 12-2.

First, the VoIP service subscriber writes a short message through a user interface provided by the VoIP terminal 11-1, and then sends a short message by pressing a short message transmission button (S21).

In step S21, the VoIP terminal 11-1 may insert identification information indicating that the short message is in the SIP Request URI and transmit it to the soft switch 15-1. That is, as described above, the identification information (Prefix) may be used to inform the soft switch 15-1 that the SIP MESSAGE sent from the VoIP terminal 11-1 is a SIP MESSAGE method for requesting a short message service.

Then, the soft switch 15-1 receiving the SIP MESSAGE transmitted by the VoIP terminal 11-1 determines that the short message service is requested by checking the identification information, and the SIP extension method MESSAGE. Routing to the VoIP short message center (15-2) using (S22).

The VoIP short message center 15-2 analyzes the final destination number of the short message received from the soft switch 15-1 to determine whether to forward the short message to or outside the VoIP network. (S23).

If the final destination in the step S23 is inside the VoIP network, the VoIP short message center 15-2 retransmits the short message received from the soft switch 15-1 to the soft switch 15-1 in step S22. (S24-1). Then, the soft switch 15-1 transfers it back to the VoIP terminal 11-1, which is the final destination of the short message, and waits for a response thereof (S24-2).

The VoIP terminal 11-2 transmits a response to receiving the short message to the soft switch 15-1 (S24-3), and the soft switch 15-1 returns this result to the VoIP short message center 15-. 2) (S24-4).

The VoIP short message center 15-2, which has received a response that the short message has been received from the VoIP terminal 11-2 which is the final destination, transfers it to the soft switch 15-1 (S24-5). The procedure 15-1 transfers this to the VoIP terminal 11-1 to inform the result of the short message transmission (S24-6).

However, if the determination result in step S23 is that the final destination of the short message is a mobile communication network or a wired telephone network (PSTN) that is not inside the VoIP network, the VoIP short message center 15-2 receives the short message received from the soft switch 15-1. The message is sent to the SMS gateway 15-3 (S25-1), and the SMS gateway 15-3 receiving the message is processed to be delivered back to the called party terminal 12-1 or 12-2 corresponding to the final destination. (S25-2).

When the SMS gateway 15-3 receives the response regarding the reception of the short message from the called party terminal 12-1 or 12-2, which is the final destination (S25-3), the SMS short message center 15-2 again. Transfer to (S25-4).

Upon receiving the short message transmission result from the SMS gateway 15-3, the VoIP short message center 15-2 transfers it to the soft switch 15-1 (S25-5), and the soft switch 15-1 The procedure is terminated by transmitting the short message to the VoIP terminal 11-1, which has transmitted the short message, to inform the result of the short message transmission (S25-6).

Meanwhile, in step S22, the soft switch 15-1 may be configured to route the short message received from the VoIP terminal 11-1 to the VoIP short message center 15-2 using the SIP extension method MESSAGE. .

The SIP extension method SIP MESSAGE may include one or more extension headers of a caller identification number and a callback number.

At this time, an example of the syntax for processing the extended header for the caller identification number may be configured as "Remote-Party-ID: <sip: 07075994222 @ TRUE; user = phone>; screen = yes; party = calling". . In addition, as an example of the syntax for processing the extension header for the callback number, it may be configured as "UserParam: 07075994222" and the like, which may be used for specifying a callback number when transmitting a short message.

Another embodiment of a short message service method for a VoIP subscriber according to the present invention will be described with reference to FIG. 3. At this time, it is assumed that a short message is transmitted from the wireless terminal 12-1 or the wired terminal 12-2, and the destination terminal is the VoIP terminal 11-1.

First, when the SMS gateway 15-3 receives a short message transmitted from a wireless terminal or a wired terminal 12-1, 12-2 through a wired / wireless telephone network (S31), the SMS short message center 15-2 is received. To be transmitted (S32).

The VoIP short message center 15-2 forwards the short message of the standard interface received in step S32 to the soft switch 15-1 in a SIP manner (S33), and the soft switch 15-1 sends this short message. After transferring to the final destination VoIP terminal 11-1, the UE waits for a response from the VoIP terminal 11-1 (S34).

When the soft switch 15-1 receives the response regarding the short message reception result from the VoIP terminal 11-1 (S35), the soft switch 15-1 reverts to the VoIP short message center 15-2 in response to the transfer in step S33. ) To route (S36).

Upon receiving the result of the short message transmission from the soft switch 15-1, the VoIP short message center 15-2 transfers it to the SMS gateway 15-3 in response to the transfer in step S32 (S37). .

Then, the SMS gateway 15-3 transfers this to the wireless terminal or the wired terminal 12-1, 12-2 in response to the short message transmission request in step S31 (S38).

The above-described embodiments are intended to help the understanding of the present invention, and the present invention is not limited to the above-described embodiments and can be variously modified and implemented by those skilled in the art without departing from the spirit of the present invention. to be.

According to the present invention, it is possible to provide a short message transmission / reception service, which is limitedly provided only between conventional wireless, some wired and specific VoIP terminals, even between wired / wireless and VoIP terminals. Accordingly, it is possible to expand the range of VoIP services and to contribute to the convenience of VoIP service users by moving away from simple voice call-oriented VoIP service methods.

Claims (9)

Connected to a VoIP terminal using a SIP (Session Initiation Protocol) method through a VoIP network, the short message transmitted by the VoIP terminal is routed to a VoIP Short Message Center (SMSC) or received from the VoIP Short Message Center (SMSC). A soft switch for transmitting a short message to the VoIP terminal; An SMS gateway for interfacing the VoIP short message center to exchange short messages with a wired or wireless telephone network; And VoIP subscribers comprising a VoIP Short Message Center (SMSC) for determining a destination number of a short message received from the soft switch and forwarding the short message received from the SMS gateway to the soft switch. Short Message Service System. The method of claim 1, The VoIP terminal is a short message service system for a VoIP subscriber, characterized in that when transmitting a short message, the identification information (Prefix) informing that the short message is inserted into the SIP Request URI and transmitted. The method of claim 1, The soft switch is configured to route the short message received from the VoIP terminal to the VoIP short message center (SMSC) using a SIP extension method MESSAGE. The method of claim 3, wherein The SIP extension method MESSAGE is configured to include an extension header for indicating one or more of a caller identification number and a callback number. Receiving, by the soft switch connected to the VoIP network, a short message transmission request sent by the VoIP terminal using the SIP method; The soft switch routing the short message transmission request to a VoIP short message center (SMSC); Analyzing, by the VoIP short message center, a called number of the short message transmission request and transmitting the received number to an SMS gateway connected to a wired / wireless telephone network; And And sending, by the SMS gateway, the short message to the called party's terminal through the wired / wireless telephone network. The method of claim 5, wherein The VoIP terminal is a short message service method for a VoIP subscriber, characterized in that configured to transmit by inserting an identification information (Prefix) informing the SIP Request URI when transmitting a short message. The method of claim 6, The soft switch is configured to determine that the short message transmission request through the identification (Prefix) short message service method for a VoIP subscriber. The method of claim 5, wherein The soft switch is configured to route a short message received from the VoIP terminal to the VoIP Short Message Center (SMSC) using a SIP extension method MESSAGE. The method of claim 8, The SIP extension method MESSAGE is configured to include an extension header for indicating at least one of a caller identification number and a callback number.

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