KR100793348B1 - The method of exchanging positioning information exchange in wireless phone-based and network thereof - Google Patents

Abstract

A method for exchanging location information on the basis of the locations of UEs(User Equipments) and a wireless network using the same are provided to enable a user to easily execute location setup by directly inputting the current location through his UE. Users "A" and "B" respectively register their locations for proxy servers "A" and "B"(S1001-S1004). In case that the user "A" sends an INVITE User B message to the proxy server "A" in order to grasp the location of the user "B" while making a call to the user "B", the proxy server "A" confirms whether the user "B" is in an active state for a location service(S1006). If so, the proxy server "A" transmits the INVITE User B message to the user "B"(S1007). In response to the INVITE User B message, the user "B" sends a 200 OK message having a position header which contains his own location information and the location information of the proxy server "B", to the proxy server "A"(S1008). Receiving the 200 OK message, the proxy server "A" delivers the received message to the user "A"(S1009).

Description

A method for exchanging location information based on the location of a wireless terminal and a wireless network using the same

1 schematically illustrates the structure of a Wireless LAN.

2 is a diagram illustrating a process of providing a mobile terminal with its own location information to another terminal in a conventional location information providing system.

3 is a diagram illustrating a process of obtaining location information of a counterpart by a mobile communication terminal in a conventional location information providing system.

4 is a diagram illustrating a procedure of registering a location of a wireless terminal with a proxy server.

5 is a diagram illustrating a process of registering location information with a proxy server using a SIP protocol.

6 is a diagram illustrating a process of configuring a location service based network of a wireless terminal.

7 is a diagram illustrating a process of exchanging location information of a terminal according to an embodiment of the present invention.

8 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

9 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

10 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

11 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

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

1010: User A 1020: Proxy Server A

1030: Proxy server B 1040: User B

1130: E 911

The present invention relates to a location-based service of a wireless terminal, and more particularly, to a method for providing a location service between wireless terminals for providing a location service based on the user's current location of the wireless terminal, and a wireless network using the same. It is about.

As the mobile network expands worldwide and the user equipment (hereinafter referred to as "UE") has become smaller, users of mobile communication services always carry their mobile terminals and use their terminals to make calls and other additional services. I want to use the service. Also, in the environment of the global mobile communication system, many users want to be provided with application services (eg, traffic and living information) using the location information of the mobile communication terminal, and in some countries or mobile network areas, their location using the mobile communication terminal is provided. Information acquisition system is commercialized. In accordance with this trend, researches for identifying the location of a mobile terminal user are continuing, and interest in location information service is rapidly increasing.

In general, a mobile terminal user who wants to know his location requests a location information by accessing a location information providing server through a network. The location information providing server determines whether the corresponding mobile communication terminal is a terminal registered in the location information providing service and then provides the location information of the terminal. As a result, the user of the mobile communication terminal may receive his location information and various location services using the same. It is also possible for the terminal user to inform other terminal users of their location information or to obtain the location information of other terminal users.

1 is a diagram schematically illustrating a structure of a wireless LAN.

The WLAN network includes a WLAN terminal, a proxy server A (10), a proxy server B (20), a location gateway (30), and the like. A WLAN terminal is a terminal that supports location services. Proxy server A 10 and proxy server B 20 support location service information and exchange messages between WLAN terminals. The location gateway 30 connects the proxy server A 10 and the proxy server B 20 with a location service application server to provide an application service using a location service to a WLAN terminal.

2 is a diagram illustrating a process of providing a mobile terminal with its own location information to another terminal in a conventional location information providing system.

As shown in the drawing, the conventional location information providing system has contents related to the location services of UE 1 210 and UE 2 220, which are terminals capable of transmitting and receiving data with other terminals or servers through a network, and are located from a user. If there is a request for the service, the service provider 230 and the terminal 210 or 220 providing the service according to the needs or the location measurement request of the service provider 230 after confirming the location measurement authority of the requester of the requested terminal A location measurement server 240 that measures the location and provides the measured location information to the terminal (210, 220) or the service provider 230.

When the UE 1 210 wants to use a location service that transmits its location information to the UE 2 220, the UE 1 210 requests a location service from the service provider 230 (S201).

The service provider 230 receiving the location service request from the UE 1 210 requests the location server 240 to measure the location of the UE 1 210 (S202).

The location measurement server 240 measures the location of the UE 1 210 and transmits the measured location information to the service provider 230 (S203).

The service provider 230 that obtains the location information of the UE 1 210 from the location measurement server 240 transmits the location information of the UE 1 210 to the UE 2 220 (S204).

Unlike the above, UE 1 210 may request a location measurement from the location server 240 directly. In this case, the location measurement server 240 measuring the location of the UE 1 210 transmits the location information of the UE 1 210 to the service provider 230, and the service provider 230 uses the UE 2 220. ) May provide a location service including the location information of the UE 1 (210).

3 is a diagram illustrating a process of obtaining location information of a counterpart by a mobile communication terminal in a conventional location information providing system.

The configuration of the illustrated location information providing system is the same as that of the system illustrated in FIG. 2. When UE 1 310 wants to know the location of UE 2 320, UE 1 310 requests location service from service provider 330 (S301).

The service provider 330 that receives the location service request from the UE 1 310 requests the location server 340 to measure the location of the UE 2 320 (S302).

At this time, the positioning server 340 requests the UE 2 320 to approve the positioning of the UE 2 320 (S303). Upon receiving the request for approval, UE 2 320 may approve or deny that its location information is provided to another terminal.

When the UE 2 320 approves its location (S304), the location server 340 measures the location of the UE 2 320, and measures the location of the UE 2 320 to the service provider 330. (S305).

The service provider 330 provides the UE 1 310 with location information including the location of the UE 2 320 received from the location server 340 (S306).

Alternatively, the UE 1 310 may request the location measurement of the UE 2 320 directly from the location server 340.

In general, in the location measurement server of the mobile communication network, the location of the mobile communication terminal should be determined first. There are various positioning techniques for determining the location of a mobile communication terminal, that is, a UE, and can be classified into three types as follows.

First, there is a method of determining the location of a UE in units of cells by using information of a cell closest to the location of the UE or information of a cell managing the UE.

Second, using the measurement signal between the base station and the UE, the time of arrival obtained from the signal strength or propagation time of the radio wave (hereinafter referred to as "TOA") or the time difference of arrival (hereinafter referred to as "TOA"). TDOA ", and the TOA or TDOA is applied to triangulation to determine the location of the UE. For example, the base station transmits a radio wave signal to UEs located in a specific cell, and transmits a positioning signal (for example, radio arrival time or radio wave arrival time difference) from the radio wave received from the UEs to the positioning server.

Third, there is a method of determining a location of a UE using a Global Positioning System (GPS).

Mobile communication terminals have a fast moving characteristic. Therefore, since it is difficult for mobile communication terminals to have a fixed location value, when searching for the location of the mobile communication terminal, the current location of the mobile communication terminal that changes from time to time using the Cell ID, the GPS receiver, and the TDOA (or TOA) scheme as described above is used. I have to find it.

However, since wireless terminals are generally used in homes or offices, mobility is very low. The static nature of these wireless terminals can be very good at supporting location services. That is, in the case of a wireless terminal, a user can directly input his / her current location to the terminal and receive location service without using many other signals to find its location as in the case of the above-described mobile communication terminal.

Despite the above advantages in location service support, there is no prior art for location services based on the current location of the wireless terminal.

Accordingly, in the present invention, in order to support the location service of the wireless terminal, the location header of the wireless terminal is defined, the location information of the wireless terminal is registered in the proxy server, and the location service based network for the location information exchange of the wireless terminal is configured. By providing a method for exchanging the location information of the terminal.

Another object of the present invention, even if the user is set to not provide the location information in terms of privacy, in the case of an emergency situation, it is possible to notify the location of the user without the user's consent to apply to the emergency call service and further needs location services It is to provide a method that can be utilized in all services.

According to an aspect of the present invention for achieving the above object Location information exchange method based on the location of the wireless terminal is Registering location information of the terminal received from the user to the proxy server; transmitting, by the first wireless terminal, a message requesting the location information of the second wireless terminal to the proxy server; and the second wireless terminal from the proxy server. Receiving a message comprising location information.

remind In the location information exchange method based on the location of the wireless terminal, the step of registering the location information of the terminal to the proxy server, characterized in that to register using the SIP protocol including a Position header field.

remind In the method of exchanging location information based on the location of a wireless terminal, the Position header field includes at least one of whether a location service is set, a type of service requested by the terminal, a method of indicating a location of a user, and a location value of the user. Characterized in that.

remind In the location information exchange method based on the location of the wireless terminal, registering the location information of the terminal to the proxy server, setting the current location of the first wireless terminal to the current location of the user according to whether the location service setting Designating a second wireless terminal to know the step and location.

remind A location information exchange method based on a location of a wireless terminal, the method further comprising: determining whether to provide a location of a user when an emergency occurs regardless of whether the location service is set by the user.

remind In the location information exchange method based on the location of the wireless terminal, the step of transmitting a message requesting the location information of the second wireless terminal to the proxy server, the first wireless terminal includes its own location information Transmitting a message to the proxy server, and if the proxy server receiving the message determines whether to set the location service of the second wireless terminal, and if the second wireless terminal has set the location service, the received message is received. And transmitting to the second wireless terminal.

remind In the method of exchanging location information based on the location of a wireless terminal, receiving the message including the location information of the second wireless terminal may include the location information of the second wireless terminal in a message received from the proxy server. Adding to the proxy server, transmitting the message received from the second wireless terminal to the first wireless terminal, and the message received from the proxy server by the first wireless terminal. Obtaining location information of the second wireless terminal.

remind In the location information exchange method based on the location of the wireless terminal, if the proxy server receiving the message determines whether to set the location service of the second wireless terminal, if the location service is not set to the first wireless terminal It is characterized by transmitting a message that refuses to provide location services.

remind A method of exchanging location information based on a location of a wireless terminal, the method comprising: informing a user of an address update message when a value of a service set identifier (SSID) is changed due to a movement of the wireless terminal; It further includes.

On the other hand, the method for exchanging position information of a wireless LAN terminal according to another aspect of the present invention for achieving the above object, Proxy server position information of the user using a Position header field including the position information of the terminal received from the user Registering with; And a first WLAN terminal transmits a message requesting the location information of the second WLAN terminal to the proxy server, receives a message including the location information of the second WLAN terminal from the proxy server, and receives the location information of the second WLAN terminal. Obtaining a step.

On the other hand, the wireless terminal according to another aspect of the present invention for achieving the above object receives the location information of the terminal from the user input unit for setting the current location of the terminal to the user's location and the user's location information of the proxy And a message transmitting and receiving unit for acquiring a location of the other terminal by exchanging a message with the controller and the other terminal registered in the server.

remind The wireless terminal is characterized by using a SIP protocol including a position header field including at least one of a type of a service requested by the terminal, whether a location service is set, a method of indicating a location of a user, and a location value of the user.

On the other hand, in the wireless network based on the position of the wireless terminal according to another aspect of the present invention for achieving the above object, receiving the position information of the terminal from the user to set the current position of the terminal as the user's location A plurality of wireless terminals and a plurality of wireless terminals including an input unit, a control unit for registering the set location information of the user in the proxy server, and a message transmitting and receiving unit for acquiring a location of the other terminal by exchanging messages with the other terminal. Includes a proxy server that supports location services by switching messages.

remind In a wireless network based on a location of a wireless terminal, the mobile terminal further includes a location service application server for providing an additional service using location information of a user, and a location service gateway for connecting the location service application server and a proxy server .

Hereinafter, a method of exchanging location information based on a wireless terminal according to the present invention and a wireless network using the same will be described in detail with reference to the accompanying drawings.

First, a method of defining a message indicating the user's location information necessary for registering the user's location will be described.

An embodiment to be described later relates to a method of defining a message indicating location information when using a Session Initiation Protocol (SIP) protocol.

As described above, in the present invention, instead of searching for the user's own location using a signal, the wireless terminal directly inputs and uses the current location. However, there is no location service based header in the conventional SIP protocol. Therefore, in order to support the wireless terminal location service, the SIP header must be defined first.

The location header associated with the location service indicating the location of the wireless terminal is defined as follows.

In the Position header field, information related to the position of the terminal is recorded. In the present invention, the position information of the terminal may be registered, transmitted or received through the Position header field. When the terminal first registers the SIP and requests a message, the content of the Position header field is used. The syntax usage for position is as follows.

Position = "Position": type; cause; coord; location

The header information of the header field used as above is as follows.

The type field defines the type of service requested by the wireless terminal. The type field is divided into loctreg, loctonly, loctvoice, and loctemgcy. For the first time, a wireless terminal uses loctreg to register location services with a proxy server, loctonly to request only location services, and loctvoice to simultaneously request landline and location services. When an emergency occurs, loctemgcy is used to request a service that provides the user's location to 119 or 112, regardless of whether the user's location service is set.

The cause field is a value indicating the location service setting state of the originating / receiving terminal. The cause field is divided into accepted and rejected. If location service is set, it will be accepted. If location service is not set, it will be rejected. In the case of having a rejected value, the location field information described later has a value of zero.

The coord field is an abbreviation of coordinates and represents a coordinate system that indicates position. The method described in the coord field includes a degree method, a meter method, and an address method. The degree method is a method of displaying a location by inputting latitude / longitude / altitude information. The meter method is to display the location of the terminal in meters based on the center of the earth. The last method, the text-based method, displays the location by inputting the address of the administrative district and the unit of address.

In the case of a SIP header supporting a location service of a wireless terminal, it is preferable to use the text-based method. The degree method and the meter method are preferably used in a mobile terminal and a terminal equipped with a GPS receiver, and are not supported by a wireless terminal.

The location field is classified as my_location or proxy_location. my_location indicates the location information of the terminal and proxy_location indicates the location information of the proxy server.

Specific examples of the use of the SIP header defined by the above scheme are as follows.

First, suppose that the user requests only location services, and the calling / receiving terminal sets the location service, and the location service coordinate method follows a text-based method and displays location information of the user terminal.

In this case, the type field value is "loctonly" and the cause value is set to "accepted". The coord field value has "address" indicating the text-based method, and the my_location field value is Maetan 3-dong, Samsung's own location information. In this case, the SIP header is

Position: type = "loctonly"; cause = "accepted"; coord = "address"; my_location = "Mordan 3 buildings, Samsung Electronics".

In case of using both general phone and location service at the same time, only type field value is changed to loctvoice. In this case, the SIP header is

Position: type = "loctvoice"; cause = "accepted"; coord = "address"; my_location = "Mordan 3 buildings, Samsung Electronics".

On the other hand, when the user requests only location service, the calling / receiving terminal sets the location service, the location service coordinate method follows the degree method, and displays the location information of the user terminal, the coord field value is set to degree and my_location Field values are given as latitude, longitude, and altitude of the user's current location. In this case, the SIP header is

Position: type = "loctonly"; cause = "accepted"; coord = "degree"; my_location = "127, 37, 100" In this case, when the general telephone and the location service are used simultaneously, the type field value is changed to loctvoice, and if the location service coordinate method is the meter method, the SIP header is

Position: type = "loctvoice"; cause = "accepted"; coord = "meter"; my_location = "111111, 22222, 4000". Looking at the Position header information, it can be seen that “111111, 22222, 4000”, which is a measure of the position of the user terminal based on the center of the earth by using the meter method, is input to my_location.

However, as described above, since the degree method and the meter method are not supported by the wireless terminal, the present invention does not use the SIP header indicating the location using the degree method and the meter method as described above.

The user may not set up location services. In this case, the cause field value is set to rejected and the location field value has a value of 0. An example SIP header whose location service coordinate method is adopted as a meter method, a degree method, and a text-based method is as follows.

Position: type = "loctonly"; cause = "rejected"; coord = "meter"; my_location = "0, 0, 0"

Position: type = "loctonly"; cause = "rejected"; coord = "degree"; my_location = "0, 0, 0"

Position: type = "loctonly"; cause = "rejected"; coord = "address"; my_location = "0"

4 is a diagram illustrating a procedure of registering location information of a wireless terminal with a proxy server.

The reason for registering to the proxy server is that the terminal requesting location service may move out of the proxy server in which it is included. That is, in case of going through several Proxy Servers, the location of the terminal should be registered in the Proxy Server before moving. Details thereof will be described later in the method for configuring a location service based network for exchanging location information of a wireless terminal.

If the user does not agree to the privacy law, the location service will not be supported. Accordingly, the user determines whether to accept the location registration of the terminal, and if the user agrees, sets the service state to the "ON" state through the location service menu and inputs his location.

The procedure for registering the location of the terminal in the proxy server includes selecting a location service setting step (S420), entering a location address of the user terminal (S430), entering a number of the location service request terminal to know the location (S440), and emergency. In step S450, the user can set whether or not the telephone is set. The steps are menud on the user terminal

If a procedure of registering the terminal's location information with the proxy server is performed, a menu appears on the terminal in the initialization step (S410).

Menu 1 "Location Service Settings" sets whether or not the user uses location services. After determining whether to use the location service, the user selects ON or OFF (S420).

In the menu 2 "terminal location address input" inputs the user's current location in the same unit and detailed address unit (S430). At this time, it is preferable to enter the address in the administrative unit as much as possible. As described above, since the SIP header of the wireless terminal supports only the text-based method, it indicates the current location of the terminal by entering the unit and the detailed address based on the text-based method.

Menu 3, "Location service request terminal" inputs the number of the terminal that the user wants to know the location through the location service (S440). The location service is generally used when the other party wants to know the location of the other party. However, the location service may also know the user's own location information. In this case, the user's own terminal number may be input.

The user may request only location services, and may simultaneously request general telephone service and location services. In the latter case, after pressing the "send" soft key after inputting the other party's telephone number, it is possible to make a call to the other terminal and receive location service for the other terminal.

Menu 4, "emergency call settings" to provide a location service without the user's consent in case of emergency (S450). An emergency is an emergency that requires services like 119 or 112.

When the terminal first boots, the terminal having the location service menu and function as described above registers the location information with the proxy server using the SIP protocol defined above. After the location information is registered in the proxy server, a message including its own location information in the Position header information is transmitted to the proxy server.

5 is a diagram illustrating a process of registering location information in a proxy server using a SIP protocol.

User A 510 transmits a REGISTER SIP message containing SIP header information defined above to register its location to Proxy server 520 (S501).

Upon receiving the REGISTER SIP message transmitted from User A 510, the Proxy server 520 checks whether the Position header is present in the SIP header. If there is a Position header, a proxy_location field information value (in case of FIG. 5) indicating its position is added to the 200 OK response message and sent. If the proxy server 520 does not support the location service, a 200 OK response message without the proxy_location field information is transmitted to the user A 510 (S502).

At this time, the proxy server 520 knows its location information in advance. The proxy server 520 stores a map database classified by addresses on administrative districts to support location services in a text-based manner. The database is classified from a higher concept to a lower concept, and may be composed of a province, a city, a district, a town, a town, a village, and a village.

The proxy server 520 obtains the information of the terminal registering the location service from the REGISTER SIP message received from the User A 510 and has it as a database.

6 is a diagram illustrating a process of configuring a location service based network of a wireless terminal.

To construct a location service based network for exchanging location information of a wireless terminal, the following components are required. Location gateway for connecting the terminal 610 supporting location service, the proxy server 620 supporting location service information, and the location service application server 640 (for example, E-911 support service). (630) and so on.

However, in this case, since the location service gateway 630 is an optional component, it is used when a connection with an external location service is required. As described above, the proxy server 620 should already know its location unit (eg, eighth ball).

The location service based network construction process starts with the proxy server 620 registering its location information with the location gateway 630 connecting the location service application server 640. The proxy server 620 sends a REGISTER SIP message to the location gateway 630 (S601). Upon receiving this, the location gateway 630 checks whether there is a Position header. If there is a Position header, the location gateway 630 adds a field value of Gateway_Location = "jungball" to the Proxy server 620 in the 200 OK message. (S602).

The location gateway 630 registers its address with the location service application server 640 to connect with the location service application server 640. The registration process proceeds in the same manner as in steps S601 and S602 (S603). When step S603 is performed, the location service gateway 630 may switch the service provided by the location service application server 640 to the proxy server 620 to provide the service to the user A 610.

Basic network construction is now complete. User A 610 now registers its location information with the Proxy server 620 using the SIP protocol to provide location services (S604, S605), which is the same as the process described with reference to FIG.

Now, let's look at the location information exchange method of the terminal.

By registering the location of the user in the proxy server and configuring the location service based network using the SIP header related to location services defined by the present invention, the initial location registration procedure for location information exchange of the wireless terminal is completed.

Therefore, it is now possible to exchange location information of the terminal through the established network. The following description assumes that you want to know the other party's location. In addition, the type of service requested by the terminal is classified by the type field of the Position header. The proxy server determines whether to provide only location service to the user or location service at the same time as the call according to the type field value. However, in order to avoid duplication of specification, only the newly defined procedure will be described except the procedure described above.

7 is a diagram illustrating a process of exchanging location information of a terminal according to an embodiment of the present invention.

In FIG. 7, it is assumed that type = "loctonly" is a case where a user requests only location services. There may be two cases depending on whether the opposite terminal that wants to know the location through the location service has set the location service. In FIG. 7, the location service setting state of the terminal that wants to know the location through the location service is turned off. The case will be described. Referring to FIG. 7, it can be seen that the location service setting state of User B 730 is turned off in the proxy server 720. A case where the location service setting state of the terminal to know the location through the location service is on will be described later with reference to FIG. 8.

User A 710 sends a REGISTER message to Proxy server 720 (S701), Proxy server 720 sends a 200 OK message to User A 710 to send the location of User A 710 to Proxy server 720. It registers in (S702). When User A 710 wants to know the location of User B 730, it sends an INVITE User B message to Proxy server 720 (S703). The INVITE User B message includes information about its location. When the proxy server 720 receives the message, the proxy server 720 checks whether the user B 730 has set up a location service (S704). In FIG. 7, since User B 730 does not set up a location service, Proxy Server 720 transmits a 603 Decline message to User A 710 (S705). In the case of the Position header information of the 603 Decline message sent by the proxy server 720, the cause field value is set to "rejected" because User B 730 does not set the location service.

8 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

8 illustrates a case in which a user requests only location services, and a location service setting state of a terminal to know location services is on. Referring to FIG. 8, it can be seen that the location service setting state of User B 840 is On in Proxy Server B 830.

User A 810 and User B 840 send a REGISTER message to Proxy server A 820 and Proxy server B 830, respectively (S801 and S803). Proxy server A 820 and Proxy server B 830 receiving the message send 200 OK response messages to User A 810 and User B 840, respectively (S802 and S804). Thus, the locations of User A 810 and User B 840 are registered in Proxy server A 820 and Proxy server B 830, respectively.

When User A 810 wants to know the location of User B 840, User A 810 sends an INVITE User B message containing its location information to Proxy Server A 820 where its location is registered. send. The location of User A 810 is 3 Maetan-dong and Samsung Electronics, so the value of the my_location field is 3 Maetan-dong and Samsung Electronics. In addition, since the location of the proxy server A 820 is eighth gu, the Proxy_location field value is given as eight o'clock (S805).

Proxy server A 820 receiving the INVITE User B message checks whether User B 840 has set up location services (S806). If the location is registered in Proxy server A 820 itself, the INVITE User B message may be transmitted to User B 840. However, if it is determined that the location is not a registered user in the proxy server A 820, the user B 840 searches whether there is a registered proxy server to determine whether the user B 840 has registered the location service. You should check. In the above example, since the user B 840 registers the location information with the proxy server B 830 located in Yeongtong-gu, the proxy server A 820 provides the location service by the user B 840 through the proxy server B 830. You can see that we set.

When the proxy server A 820 determines that the user B 840 has set up the location service, the proxy server A 820 transmits an INVITE User B message received from the user A 810 to the user B 840 (S807).

Upon receiving the message, User B 840 sends a 200 OK response message having a Position header including its location and location information of Proxy server B 830 that registered its location (S808). ). Looking at the 200 OK response message sent by User B 840, it can be seen that the location information is added to the INVITE User B message received from Proxy server A 820. The first Position header field indicates position information of User B 840. The value of the my_location field is "Yongtong-dong, Home Plus" which is the location of User B 840, and the value of the proxy_location field is "Yongtong-gu", which is the location of Proxy server B 830 to which User B 840 has registered a location. The second Position header field contains information on the message received from Proxy server A 820.

When the proxy server A 820 receives the 200 OK message from the user B 840, the proxy server A 820 transmits the 200 OK message to the user A 810 (S809). User A 810 reads the Position header of the received message to determine that User B 840 is home plus in zero dong.

9 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

Now let's look at the case of type = "loctvoice", that is, when a user requests a regular phone service at the same time as a location service. In this case, the only difference is that the user requests more regular phone service than the type = "loctonly". Therefore, if the other terminal to know the location does not set the location service, the procedure shown in Figure 7 proceeds, and if the other terminal sets the location service, the procedure shown in FIG.

Accordingly, the method of exchanging the location information of the terminal will be described according to whether the location service of the calling terminal is set. Also in this case, there may be two cases. In FIG. 9, a case where the location service setting state of the calling terminal is off will be described. 9, it can be seen that the location service setting state of User A 910 is turned off in the proxy server 920. A case where the location service setting state of the originating terminal is in an on state will be described later with reference to FIG. 10.

User B 930 sends a REGISTER message to Proxy server 920 (S901), and Proxy server 920 sends a 200 OK response message to User B 930 (S902) to register the location of User B 930. do.

When the user A 910 requests the telephone service and the location service to the user B 930 at the same time, an INVITE User B message is sent to the proxy server 920. In the Position header field of the message that User A 910 sends, the type value is given as "loctvoice" because it requests the telephone service and the location service at the same time. In addition, since User A 910 has not set the location service, the cause value is set to "rejected" and the my_location value is set to "0". Since the proxy server 920 is located in Yeongtong-gu, the proxy_location value is given as "Yongtong-gu" (S903).

The proxy server 920 receiving the INVITE User B message from the User A 910 checks whether the User B 930 has set up a location service in order to provide the service requested by the User A 910 (S904).

In FIG. 9, since User B 930 has registered a location service with Proxy Server 920, Proxy Server 920 transmits the message received from User A 910 to User B 930 (S905).

Upon receiving this, User B 930 sends a 200 OK response message to Proxy Server 920. The 200 OK response message sent by User B 930 is the location information of User B 930 added to the INVITE User B message received from Proxy server 920. In the first Position header field of the 200 OK response message, it can be seen that my_location value indicating the location of User B (930) is given as Youngtong-dong and Home Plus, and proxy_location value indicating the location of the Proxy server 920 is given as Youngtong-gu. have. As described above, since User B 930 has set the location service, the cause value will be accepted (S906).

The proxy server 920 receives the 200 OK response message sent by the User B 930 and delivers it to the User A 910 (S907). User A 910 reads the Position header information of this message to know that the current position of User B 930 is Home Plus in Youngtong-dong.

10 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

10 illustrates a case where a user requests a general telephone service at the same time as a location service, and the location service setting state of the calling terminal is on. Referring to FIG. 10, the location service setting state of User A 1010 in the Proxy server A 1020 is set to On.

User A 1010 and User B 1040 register their positions with Proxy server A 1020 and Proxy server B 1030, respectively (S1001 through S1004). Steps S1001 to S1004 are the same as the procedure described with reference to FIG. 8 as a location registration process of the user.

When User A 1010 requests a telephone service with User B 1040 and at the same time wants to know the location of User B 1040, User A 1010 is connected to Proxy server A 1020 whose location is registered. Send an INVITE User B message containing your location information. The type value is loctvoice since the telephone service and the location service are requested at the same time, and the cause value is accepted since the user A 1010 has set the location service. In addition, since the location of User A (1010) is 3 Maetan-dong and Samsung Electronics, the value of my_location field is 3 Maetan-dong and Samsung Electronics. Since the location of Proxy server A (1020) is Paldal, the value of Proxy_location field is Paldal (S1005).

Proxy server A (1020) receiving the INVITE User B message The user B 1040 checks whether the location service is registered (S1006).

If it is determined in step S1006 that User B 1040 has set the location service, Proxy server A 1020 transmits an INVITE User B message received from User A 1010 to User B 1040 (S1007).

Upon receiving the message, User B 1040 sends a 200 OK response message having a Position header including its location information and location information of Proxy server B 1030 that registered its location to Proxy server A 1020 ( S1008).

The 200 OK response message sent by User B 1040 is in the form of adding its own location information to the INVITE User B message received from Proxy server A 1020. The first Position header field indicates position information of User B 1040. The value of the my_location field is "Yongtong-dong, Home Plus", which is the location of User B 1040, and the value of the proxy_location field is "Yongtong-gu," which is the location of Proxy server B 1030 to which User B 1040 has registered a location. The information in the second Position header field indicates the INVITE User B message received from Proxy server A 1020.

The proxy server A 1020 receives the 200 OK response message from the user B 1040 and transmits the 200 OK response message to the user A 1010 (S1009). This allows User A 1010 to obtain information that User B 1040 is located at Home Plus in Yeongtong-dong.

11 is a diagram illustrating a location information exchange process of a terminal according to another embodiment of the present invention.

11 is a method of exchanging location information when a user requests a service capable of providing his / her location regardless of whether a location service is set when an emergency occurs, that is, it has a type = "loctemgcy" value. If the user has set up the location service, the location information exchange method of FIG. 11 does not have much meaning since the location of the user may be provided when an emergency occurs. Accordingly, the method of exchanging location information relates to a case in which the user sets the location service setting state to the off state in order to protect his or her privacy, that is, when the menu 4 in FIG. 4 "emergency call setting" is on.

An emergency situation occurs and E911 1130, which wants to rescue User A 1110, requests an emergency call from User A 1110 (S1101).

Upon receiving the emergency call request message, that is, the INVITE User A message, the Proxy server 1120 transmits the INVITE User A message to User A 1110 (S1102).

In the Position header field of the INVITE User A message, the type value is "loctemgcy". In addition, the Position header field includes position information of the E911 1130 and position information of the Proxy server 1120 in which the E911 1130 registers a position.

When User A 1110 reads the Position header field and recognizes that the type value is "loctemgcy," User A 1110 sends a 180 ringing message including its own location information to Proxy server 1120 (S1103). Looking at the 180 ringing message, the type value is “loctemgcy” because User A 1110 has set the service to provide its own location in case of emergency regardless of the location service setting. In this case, the cause value is accepted because the location of User A 1110 is provided. Since the location of User A 1110 is Samsung Electronics in Maetan 3-dong, my_location is Samsung Maetan 3-dong, and since the location of the Proxy Server 1120 is Ealda-gu, the proxy_location value is Ealda-gu.

The proxy server 1120 receiving the 180 ringing message transmits it to the E911 1130 to answer the emergency call (S1104). The E911 1130 may know from the response that User A 1110 is located at Samsung Maetan 3-dong.

All of the above descriptions are made on the assumption that the wireless terminal is not mobile. However, when the wireless terminal moves, there may be a need to update the address.

In general, the terminal operates with a previously input address, but notifies the user of an address update message when a value of a service set identifier (SSID) is changed due to mobility. Automatic address update message is informed to user when SSID is changed due to location movement or handover by Access Point. Therefore, address update is possible in this case.

With reference to the accompanying drawings as described above While the embodiments of the present invention have been described, common knowledge in the art belongs Those who have the present invention It will be appreciated that the present invention may be embodied in other specific forms without changing the technical spirit or essential features. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

In the above description, an example in which a message indicating location information is defined using the SIP protocol has been described. However, those skilled in the art have described various protocols such as H.323 and the TCP / IP protocol of the International Telecommunication Standardization Sector (ITU-T), and other equivalents. It is apparent that the location information of the wireless terminal can be represented using a message format.

Location service based on the location of the wireless terminal according to the present invention, unlike a mobile communication terminal that uses a signal to find its own location, the user inputs the current location directly to the terminal, so the user's location setting It has a simple effect, and informs the location of the other party when talking with a wireless terminal that wants to know the location through the location service, and at the same time, the user can know the location of the other party as well as the calling party number even when he / she is absent. Even in case of emergency, it is possible to provide their location.

Claims (14)

In the location information exchange method of the wireless terminal, Setting location information input from a user to a current location of a terminal and registering the location information with a proxy server; Transmitting, by the first wireless terminal, a message for requesting location information of the second wireless terminal to the proxy server; And And receiving a message including location information of a second wireless terminal from the proxy server. The method of claim 1, Registering the current location of the terminal to the proxy server, A method for exchanging position information based on a position of a wireless terminal registering using a SIP protocol message including a Position header field. The method of claim 2, The Position header field is The location information exchange method based on the location of the wireless terminal, characterized in that it comprises at least one of the location service setting, the type of service requested by the terminal, the method of indicating the location of the user and the location value of the user. The method of claim 1, Location information exchange method based on the location of the wireless terminal to register the current location of the terminal to the proxy server according to the location service setting. The method of claim 4, wherein And determining whether to provide the location of the user when an emergency occurs regardless of whether the location service is set by the user. The method of claim 1, The step of transmitting a message requesting location information of the second wireless terminal to the proxy server, Transmitting, by the first wireless terminal, a message including its location information to the proxy server; Wow The proxy server receiving the message checks whether the location service is set by the second wireless terminal, and when the location service is set by the second wireless terminal, transmitting the received message to the second wireless terminal. Location information exchange method based on the location of the wireless terminal. The method of claim 1, Receiving a message including the location information of the second wireless terminal is Transmitting, by the second wireless terminal, its own location information to a message received from the proxy server and transmitting the location information to the proxy server; Transmitting, by the proxy server, a message received from the second wireless terminal to the first wireless terminal; And Obtaining, by the first wireless terminal, location information of the second wireless terminal from the message received from the proxy server. The method of claim 6, The proxy server receiving the message checks whether the location service is set by the second wireless terminal, and if the location service is not set, transmits a message to the first wireless terminal to reject the location service. Location information exchange method based on the location of the wireless terminal. The method of claim 1, Location information based on the location of the wireless terminal further comprising the step of informing the terminal of the address update message when the value of the service set identifier ("SSID") is changed when the wireless terminal is moved. Exchange method. In the location information exchange method of a wireless LAN terminal, Registering the current location of the terminal with the proxy server using a position header field including location information received from a user; Wow The first WLAN terminal transmits a message requesting the location information of the second WLAN terminal to the proxy server, receives a message including the location information of the second WLAN terminal from the proxy server, and receives the location information of the second WLAN terminal. Location information exchange method based on the location of the wireless LAN terminal comprising the step of obtaining. An input unit configured to set location information input from a user to a current location of a terminal; A control unit that registers a current location of the set terminal to a proxy server; And And a message transmitting and receiving unit for exchanging a message with an opposite terminal to obtain location information of the opposite terminal. The method of claim 11, The wireless terminal uses a SIP protocol message including a Position header field including at least one of a type of a service requested by the terminal, a location service setting, a method of indicating a location of a user, and a location value of the user. A plurality of wireless terminals that set the location information input from the user to the current location of the terminal, register it with the proxy server, and exchange message with the other terminal to obtain location information of the other terminal; and Wireless network based on the location of the wireless terminal including a proxy server for supporting a location service by switching the messages transmitted by the plurality of wireless terminals. The method of claim 13, A location service application server for providing an additional service using location information of the user; Wow And a location service gateway for connecting the location service application server and the proxy server.

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