KR20090068594A - Location information based application service device and method - Google Patents

Abstract

The present invention relates to a location-based application service device and a method thereof, and provides a variety of location-based application services using a SIP-based VoIP terminal equipped with a SIP protocol and a presence protocol, thereby providing short-range routing and location information to a service center. It can be possible to secure.

Description

Location-based application service device and method thereof {APPLICATION SERVICE APPARATUS BASED ON LOCATION INFORMATION AND ITS METHOD}

The present invention relates to an apparatus and a service method for providing an application service based on location information using a voice over internet protocol (VoIP) terminal based on a session initiation protocol (SIP).

The present invention is derived from the research conducted as part of the information and communication standard development support project of the Ministry of Information and Communication and the Ministry of Information and Telecommunications Research and Development. [Task management number: 2007-P10-28, Task name: Internet telephone interworking and MoIP application standard development] .

As is well known, the location-based application service provided by using a SIP-based VoIP terminal is the nearest service based on the location information of the caller terminal when the caller calls the same destination number anywhere in the country. The call is delivered to the center, and the service center that has received the call is a service for identifying the location of the calling terminal and providing a corresponding service.

For example, the location-based application services include national representative number services such as flower delivery service and pizza delivery service, such as 1588, and emergency rescue services such as 112, 113, and 119, and the like for location-based application services. SIP-based VoIP terminals are on the market.

However, as mentioned above, since the application service based on the location information mentioned above uses a SIP-based VoIP terminal that supports only the SIP protocol, there are many limitations that cannot be supported because the corresponding service is not diverse. Considering the rapidly developing environment of information and communication technology, using a SIP-based VoIP terminal equipped with both a SIP protocol and a presence protocol, location-based information enabling both national representative number services such as 1588 and emergency rescue services such as 119 There is a need to further develop a technology capable of providing various application services.

Accordingly, the technical problem of the present invention has been devised by the above-described necessity, and provides a location information based application service that can provide various location information based application services using a SIP based VoIP terminal equipped with a SIP protocol and a presence protocol. An apparatus and a method thereof are provided.

The location information-based application service apparatus according to an aspect of the present invention, a call processing server for recognizing a call input from a SIP-based VoIP terminal as an emergency call, and determine an option tag (option tag) for the recognized emergency call, Location-based routing server that requests routing address through register message including determined option tag and provides call setup message to routing address input in response to request, and location of SIP-based VoIP terminal according to routing address request And a central information management server for determining a routing address closest to the network server and providing the location information based routing server, and a central location information management server for managing location information of the SIP-based VoIP terminal.

In addition, the location information-based application service method according to another aspect of the present invention, when a call corresponding to the invite message from the SIP-based VoIP terminal, the step of recognizing the call as an emergency call, and the option tag corresponding to the call Determining a routing address through a register message including the determined option tag, determining a routing address of a service center closest to the location of a SIP-based VoIP terminal according to the routing address request, and requesting the response via a response message. And providing the call establishment message to the service center of the determined routing address.

In addition, the location-based application service method according to another aspect of the present invention, if the IP address of the SIP-based VoIP terminal is changed by registering the changed IP address to the subscriber information management server through a register message, SIP-based Registering the changed location information with the subscriber information management server through a publish message when the location information of the VoIP terminal is changed; and notifying the registered IP address and location information at the request of the central location information management server. Characterized in that.

According to the present invention, by providing various application services based on location information using a SIP-based VoIP terminal equipped with a SIP protocol and a presence protocol, it is possible to enable short-range routing and location information to a service center.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating principle of the present invention. In the following description of the present invention, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

1 is a block diagram of a location information-based application service device according to the present invention, and includes a SIP-based VoIP terminal 10, an application service device 20, and a service center 30.

SIP-based VoIP terminal 10 supports six methods specified in RFC3261 (Invite, Ack, Bye, Register, Option, Cancel). Client system that provides the basic SIP protocol and the presence protocol supporting three methods (publish, subscribe, notifyify) specified in RFC3903, RFC3265, and RFC3856. ) If the address is changed, the changed IP address is registered to the subscriber information management server 20c through the register message through the Internet (S1), and similarly, if the location information is changed, the changed IP address is changed through the Internet (S1). Register with the subscriber information management server 20c through a publish message. Here, the SIP-based VoIP terminal 10 can obtain its location information through the subscriber's input or GPS system.

In addition, the SIP-based VoIP terminal 10 generates an invite message through the Internet (S1) and provides it to the call processing server 20a when an emergency call such as 119 is desired.

The application service apparatus 20 includes a call processing server 20a, a location information based routing server 20b, a subscriber information management server 20c, and a central location information management server 20d.

The call processing server 20a is a server for processing a general call. When a representative number call such as 119 corresponding to an invite message is input from the SIP-based VoIP terminal 10, the call processing server 20a recognizes the call and distinguishes it from the general call. Provides a representative number such as 119 corresponding to the address message to the location information-based routing server 20b dedicated to the.

When the location information based routing server 20b receives a call of the representative number corresponding to the location information based application service from the call processing server 20a, the location information based routing server 20b classifies the type of the location information based application service according to the input representative number. The corresponding option tag is determined among the option tag according to the emergency call related representative number and the option tag according to the general national representative number service, and a register message including the option tag determined in the subscriber information management server 20c is determined. After forwarding the call, the router requests the subscriber information management server 20c. Here, the location-based routing server 20b registers which location-based routing application extension function is supported between the subscriber information management server 20c and the location information-based routing server 20b to request and secure the corresponding routing address. Request and obtain through the Supported and Require headers in the message.

In addition, the location information-based routing server 20b, if the routing address for the nearest service center from the subscriber information management server 20c is input through the 200 OK message for the register, the call to the service center 30 of the routing address. Provides a byte message, which is a configuration message.

The subscriber information management server 20c stores the IP address of each subscriber station registered through the register message from the SIP-based VoIP terminal 10 and the location information registered through the publish message. The subscriber information management server 20c provides location information of all subscribers to the central location information management server 20d through a publish message because the location information based application service is made nationwide.

In addition, the subscriber information management server 20c is the subscriber location of the regional service center of the 119 emergency call shown in FIG. 3 according to the type of location information-based application service included in the Supported header input from the location-based routing server 20b. Determines the nearest service center. When the register message including the option tag for identifying the type of the location information-based application service is input, the subscriber information management server 20c responds with the short-range routing address information according to the subscriber location information 200. Provided to the location information-based routing server 20b contained in the OK response message.

When the central location information management server 20d receives the location information of all subscribers from the subscriber information management server 20c in all the internet phone providers through a publish message, the central location information management server 20d serves as the subscriber information management server 20c in all the internet phone providers. Scribe and notifyfly messages allow periodic notification of location information changes.

The service center 30 receives the location information of the SIP-based VoIP terminal 10 when the invite message, which is a call setup message corresponding to the representative number such as 119, is input from the location information-based routing server 20b. In order to secure from 20d, a corresponding message requested through a subscription message and received location information of the SIP-based VoIP terminal 10 from the central location information management server 20d through a notification message (eg, as a representative number) (eg, 119 provides emergency rescue services to the caller.

4 is a flowchart sequentially illustrating a method of registering and managing changed IP address and location information of a subscriber using a SIP-based VoIP terminal according to an embodiment of the present invention.

First, when the IP address is changed, the SIP-based VoIP terminal 10 registers the changed IP address in the subscriber information management server 20c through a register message (S401) through the Internet (S1), and similarly the location information If changed, the changed location information is registered in the subscriber information management server 20c through a publish message (S403). Here, the SIP-based VoIP terminal 10 can obtain its location information through the subscriber's input or GPS system.

At this time, the register message is composed of a To header, a Contact header, and an Authorization header, and the rest of the format follows that defined in the RFC3261 standard. That is, the To header is the subscriber's SIP URI, the Contact header is the subscriber's contactable IP address, and the Authorization header is the authentication information.

The composition of the publish message consists of a From header, an Event header, a body, and an Authorization header. The rest of the format follows that defined in the RFC3903 standard. That is, the From header is the subscriber's SIP URI, the Event header is the presence, the body is the location information of the subscriber station, in the PIDF-LO format defined in RFC4119, which is address information or GPS information, and the Authorization header is authentication information.

The subscriber information management server 20c stores the IP address of each subscriber station registered through the register message from the SIP-based VoIP terminal 10 and the subscriber location information registered through the publish message (S405), and then the location information. Since the base application service is made in a nationwide form, the central location information management server 20d provides location information of all subscribers through a publish message (S407).

The central location information management server 20d is a subscriber information management server 20c in all Internet telephone service providers in response to the location information of all subscribers inputted from the subscriber information management server 20c. Request change (S409) to receive a notification periodically when the change.

Then, the subscriber information management server 20c notifies the central location information management server 20d that the IP address and location information of the subscriber station have been changed (S411).

At this time, the subscribe message consists of a To header and an Event header, and the rest of the format follows that defined in the RFC3856 standard. That is, the To header is the subscriber's SIP URI to subscribe to and the subscriber's SIP URI, and the Event header is presence.

The composition of the Notify Fly message consists of a To header, an Event header, and a body. The rest of the format follows that defined in the RFC3856 standard. That is, the To header is a subscribed SIP URI, the subscriber's SIP URI, the event header is presence, and the body is changed location information of the subscriber station, in PIDF-LO format defined in RFC4119, which is address information or GPS information.

5 is a flowchart sequentially illustrating a location information based short-range routing method of a subscriber using a SIP-based VoIP terminal according to another embodiment of the present invention.

First, when the SIP-based VoIP terminal 10 wants an emergency call such as 119, the SIP-based VoIP terminal 10 generates an invite message through the Internet S1 and provides it to the call processing server 20a (S501).

 At this time, the byte message consists of a Req-URI, From header and To header, and the rest of the format follows that defined in the RFC3261 standard. That is, Req-URI is the address of the To header (e.g., 119), the From header is the subscriber's SIP URI (e.g., subscriber's call number, 070-xxx-yyyy), and the To header is the address of the representative number (e.g., 119). )to be.

When the call processing server 20a receives a representative number call such as 119 corresponding to an invite message from the SIP-based VoIP terminal 10, the call processing server 20a recognizes the call as an emergency call and location information base dedicated to location information based routing. The routing server 20b provides a representative number call such as 119 corresponding to the invite message (S503).

When the location information based routing server 20b receives a call of the representative number corresponding to the location information based application service from the call processing server 20a, the location information based routing server 20b determines an option tag corresponding to the representative emergency number related to the emergency call. S505), and transmits the call through the register message including the option tag determined to the subscriber information management server 20c (S507), and then requests the corresponding routing address to the subscriber information management server 20c (S509). . Here, the location-based routing server 20b registers which location-based routing application extension function is supported between the subscriber information management server 20c and the location information-based routing server 20b to request and secure the corresponding routing address. The request is made through the Supported header and the Require header in the message, and finally the corresponding routing address is secured (S511).

At this time, the register message consists of a To header, a Supported header, and an Authorization header, and the rest of the format follows that defined in the RFC3261 standard. That is, the To header is the subscriber's SIP URI (eg, the subscriber's call number, 070-xxx-yyyy), the Supported header is the address of the representative number (eg, 119), and the Authorization header is authentication information.

The subscriber information management server 20c is the most at the subscriber location among the regional service centers of the 119 emergency call shown in FIG. 3 according to the type of the location information based application service included in the Supported header inputted from the location information based routing server 20b. The nearest service center is determined (S513). Then, the subscriber information management server 20c includes the routing address for the nearest service center determined in the Require header in the 200 OK response message for the register and provides the location information-based routing server 20b (S515).

At this time, the 200 OK response message for the register consists of a To header, a Require header, and a Contact header, and the rest of the format follows that defined in the RFC3261 standard. That is, the To header is the subscriber's SIP URI (e.g., the subscriber's calling number, 070-xxx-yyyy), the Require header is the representative number's address (e.g., 119), and the Contact header is the nearest service center address (e.g., a match). Area code, 3201119).

The location information-based routing server 20b sends a call setup message to the service center 30 of the corresponding routing address when the routing address for the nearest service center from the subscriber information management server 20c is input through the 200 OK message for the register. An invite message is provided (S517).

At this time, the byte message consists of a Req-URI, From header and To header, and the rest of the format follows that defined in the RFC3261 standard. That is, Req-URI is the nearest service center address (e.g., race area number, 3201119), the From header is the subscriber's SIP URI (e.g., subscriber's call number, 070-xxx-yyyy), and the To header is the representative number. Address (e.g., 119).

The service center 30 receives the location information of the SIP-based VoIP terminal 10 when the invite message, which is a call setup message corresponding to the representative number such as 119, is input from the location information-based routing server 20b. In order to secure from 20d, a request is made through a subscription message (S519), and the location information of the SIP-based VoIP terminal 10 is received from the central location information management server 20d through a notification message (S521). The corresponding service requested (for example, in the case of 119, provides an emergency rescue service to the caller) is provided (S523).

At this time, the subscribe message consists of a To header, an Enent header, and an Expires header, and the rest of the format follows that defined in the RFC3856 standard. That is, the To header is the sender's address (e.g., 070-xxx-yyyy), the Event header is presence, and the Expires header is zero (fetching the location information for the address of the To header once by assigning 0 as the Experience header value). Import it).

The composition of the Notify Fly message consists of a To header, an Event header, and a body. The rest of the format follows that defined in the RFC3856 standard. That is, the To header is the sender's address (for example, 070-xxx-yyyy), the Event header is presence, and the body is the sender's location information. In the PIDF-LO format defined in RFC4119, it is address information or GPS information.

Accordingly, the present invention can provide a variety of location-based application services using a SIP-based VoIP terminal equipped with a SIP protocol and a presence protocol, thereby enabling short-range routing and location information to a service center.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by those equivalent to the scope of the claims.

1 is a block diagram of a location information based application service apparatus according to the present invention;

2 is a view showing an option tag according to an emergency call related representative number,

3 is a view showing a regional service center of an emergency call;

4 is a flowchart sequentially illustrating a method of registering and managing a changed IP address and location information of a subscriber using a SIP-based VoIP terminal according to an embodiment of the present invention;

5 is a flowchart sequentially illustrating a location information based short-range routing method of a subscriber using a SIP-based VoIP terminal according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: SIP based VoIP terminal 20: Application service device

20a: call processing server 20b: location information based routing server

20c: subscriber information management server 20d: central location information management server

30: service center

Claims (12)

A call processing server for recognizing an emergency call received from a SIP-based VoIP terminal; Determine an option tag for the recognized emergency call, request a routing address through a register message containing the determined option tag, and provide a call setup message to the routing address entered in response to the request Location information based routing server, A subscriber information management server which determines a routing address closest to the position of the SIP-based VoIP terminal according to the routing address request and provides the location information-based routing server; Central location information management server for managing location information of the SIP-based VoIP terminal Location information based application service device comprising a. The method of claim 1, The subscriber information management server, When the IP address and location information of the SIP-based VoIP terminal is changed, the changed IP address and location information are registered, and the central location information management server is notified that the IP address and location information have been changed. Location information based application service device. The method of claim 1, The SIP-based VoIP terminal, the location information based application service device, characterized in that for supporting the SIP protocol and the presence protocol. The method of claim 1, The device, A service center that provides the application service by securing the location information of the SIP-based VoIP terminal through a central location information management server according to a call setup message input from the location information-based routing server. Location-based application service device further comprising a. Recognizing the call as an emergency call when a call corresponding to an invite message is input from a SIP-based VoIP terminal; Determining an option tag corresponding to the call; Requesting a routing address via a register message containing the determined option tag; Determining a routing address of a service center closest to a location of the SIP-based VoIP terminal according to the routing address request and providing the response address in response to the request; Providing a call establishment message to the service center of the determined routing address. Location information based application service method comprising a. The method of claim 5, wherein The method, Requesting location information of the SIP-based VoIP terminal according to the call setup message using a subscription message, and providing the application service by obtaining location information of the SIP-based VoIP terminal through a notification message; Location information based application service method further comprising. The method of claim 6, The subscription message includes a To header which is a sender's address, an Enent header which is a presence, and an Expires header which fetches location information on the address of the To header only once by assigning it as '0'. Information-based application service method. The method of claim 6, The Notify Fly message is a location information-based application service comprising a body that is address information or GPS information in a PIDF-LO format defined in RFC4119 as a To header, a caller's address, an event header, and a caller's location information. Way. The method of claim 5, wherein The invite message comprises a Req-URI, which is an address of a To header, a From header, which is a SIP URI, and a To header, which is an address of a representative number. The method of claim 5, wherein The register message is a location information-based application service method comprising a subscriber's SIP URI To header, a representative number's address, Supported header, and authentication information Authorization header. The method of claim 5, wherein The response message is a location information-based application service method characterized in that the subscriber's SIP URI and the Require header, which is the closest service center address to the Require header of the representative number address. Registering the changed IP address to the subscriber information management server through a register message when the IP address of the SIP-based VoIP terminal is changed; Registering the changed location information with the subscriber information management server through a publish message when the location information of the SIP-based VoIP terminal is changed; Notifying the registered IP address and location information according to a request of a central location information management server; Location information based application service method comprising a.

Images