KR101394982B1 - Method and system for generating location infromation of mobile terminal based on wireless access gateway - Google Patents

Method and system for generating location infromation of mobile terminal based on wireless access gateway Download PDF

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KR101394982B1
KR101394982B1 KR1020070112275A KR20070112275A KR101394982B1 KR 101394982 B1 KR101394982 B1 KR 101394982B1 KR 1020070112275 A KR1020070112275 A KR 1020070112275A KR 20070112275 A KR20070112275 A KR 20070112275A KR 101394982 B1 KR101394982 B1 KR 101394982B1
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South Korea
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mobile communication
location
communication terminal
information
location information
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KR1020070112275A
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Korean (ko)
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KR20090046256A (en
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양회필
서태삼
김민석
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에스케이플래닛 주식회사
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Abstract

The present invention relates to a location information generation technology of a wireless access gateway-based mobile communication terminal, and more particularly, to a mobile communication terminal that receives delimiter information from a mobile communication terminal when a mobile communication terminal is connected, Receiving a location code response message including a location code by transmitting a location code request message including delimiter information, receiving location information by querying a location-based service platform (LBSP) Generates location information by encoding the information, and transmits the generated location information to the origin server. According to the present invention, since the location information of the mobile communication terminal can be confirmed by performing communication with the AAA or GGSN in the wireless access gateway without performing paging to the mobile communication terminal to confirm the location information of the mobile communication terminal, It is possible to reduce the time required compared with the method of confirming the location information through the access network and the paging resource.

Mobile communication system, mobile communication terminal, wireless access gateway, AAA / GGSN, location information

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a method and system for generating location information of a wireless access gateway based mobile communication terminal,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for generating location information in a mobile communication system, and more particularly to a method and system for generating location information of a wireless access gateway-based mobile communication terminal suitable for acquiring location information by connecting with a wireless access gateway will be.

Generally, mobile communication terminals are connected to a fixed wired network through a mobile communication network. The mobile communication terminal is not continuously connected to the wired network through the mobile communication network but is connected to the wired network only when necessary so that the wireless bandwidth of the limited wireless network can be efficiently maintained and used by a plurality of mobile communication terminals. Accordingly, there is a need for a method for accurately and efficiently grasping the position of a mobile communication terminal moving in a wireless network when a call is made to the mobile communication terminal.

A method of determining the location of the mobile communication terminal is performed through location update and paging. In the location registration, the mobile communication terminal informs the network of its present existence so that the network can manage the location of the mobile communication terminal and connect the call when a call is received to the mobile communication terminal. If the location registration is performed too frequently, it is wasted resources in the wired / wireless network. Therefore, it is necessary to perform the location registration only when necessary. When a call to the mobile communication terminal occurs, A polling signal is transmitted to the mobile communication terminal to identify the location of the mobile communication terminal, which is called paging.

More specifically, the mobile communication terminal of the mobile communication subscriber informs the mobile communication network of the mobile communication system of its current location when the mobile communication terminal is powered on, and the mobile communication network transmits the current location of the subscriber mobile communication terminal And registers and manages the location information in a home location register (HLR). The current position information of the mobile communication terminal registered in the home location register includes unique information of the base station to be in charge of wireless communication with the mobile communication terminal. Therefore, in a mobile communication network, it is always known which base station coverage the mobile communication terminal is.

Hereinafter, a paging method for searching for the location of a mobile communication terminal in a mobile communication network will be described with reference to FIG.

Referring to FIG. 1, a mobile communication system includes a base station 102, a base station controller 104, a mobile switching center (MSC) 106, and a location information providing server 108. The mobile communication terminal 100 belonging to a cell of the base station 102 periodically transmits and receives a signal to and from the base station 102 while the power is on, The base station controller 104 requests paging for the mobile communication terminal 100 from the mobile communication switching center 106 to the base station controller 104 and transmits the paging to all the control base stations including the base station 102 And transmits a paging request message.

Upon receiving the paging request message, the base station 102 recognizes that the request is for the mobile communication terminal 100 belonging to the cell and transmits the paging signal to and receives the paging signal from the mobile communication terminal 100, The mobile communication exchange 106 transfers the information to the mobile communication exchange 106 so that the location information providing server 106 transmits the information to the mobile communication switching center 106 And transmits information on the mobile communication terminal 100 to the communication terminal.

Generally, if the location registration frequency of the mobile communication terminal increases, the cost of paging can be reduced, but the cost due to location registration is increased. On the contrary, if the location registration frequency of the mobile communication terminal is small, So that the paging cost is increased. When the position of the mobile communication terminal 100 is confirmed through the paging, the position of the cell to which the mobile communication terminal 100 belongs is delayed to some extent until receiving a signal from the mobile communication terminal 100. [ May occur.

Meanwhile, in recent years, a mobile communication terminal incorporating a GPS (Global Positioning System) module has been popular. The GPS module of the mobile communication terminal identifies the current position of the mobile terminal by communication with the satellite, However, in order to utilize such a service, the GPS module may be limited to a mobile communication terminal having a built-in GPS module.

In order to confirm the location information of the mobile communication terminal in the conventional mobile communication system operating as described above, it is necessary to perform paging with the mobile communication terminal in the mobile communication system and to transmit the location information through the exchanger and the base station information received from the mobile communication terminal. However, if the location of the mobile communication terminal is confirmed through the paging, the delay through the paging may occur, which may cause a delay in the location service. .

Further, there is a problem in that paging resources are increased in the access network by performing paging for each mobile communication terminal for which a location check is requested.

Accordingly, the present invention provides a location information generation method and system of a wireless access gateway based mobile communication terminal capable of confirming location information based on a wireless access gateway to which a mobile communication terminal accesses.

The present invention also provides a wireless access gateway-based mobile terminal capable of acquiring location information through interworking with AAA and GGSN in a wireless access gateway when a mobile communication terminal accesses a wireless access gateway to check location information of the mobile communication terminal. A method and system for generating location information of a communication terminal are provided.

In addition, when the mobile communication terminal accesses the wireless access gateway, the mobile communication terminal obtains the location code through interworking with the AAA and the GGSN in the wireless access gateway, and receives the location information by querying the obtained location code with the LBSP A method and system for generating location information of a wireless access gateway based mobile communication terminal.

A method of an embodiment of the present invention includes the steps of receiving delimiter information from the mobile communication terminal when the mobile communication terminal is connected to the mobile communication terminal and transmitting a location code request message including the delimiter information to the AAA server, Receiving a location code response message including a location code by transmitting the location code to the location-based service platform (LBSP), receiving location information by querying the location-based service platform (LBSP) with the location code, Generating location information, and transmitting the generated location information to an origin server.

Further, the present invention is characterized in that the method further comprises transmitting the generated location information to the origin server by including the generated location information in a Hypertext Transfer Protocol (HTTP) request header.

Meanwhile, in the present invention, the delimiter information is an IP or a terminal identification number.

In the present invention, the location code is sector information to which the mobile communication terminal belongs, a base station, base station controller information, and mobile communication exchange information.

A method of another embodiment of the present invention includes the steps of receiving delimiter information from a mobile communication terminal when a mobile communication terminal is connected to the mobile communication terminal, interworking with a packet gateway support node (GGSN) Receiving a location code response message including a location code by transmitting a location code request message; receiving location information by querying the location-based service platform (LBSP) with the location code; Generating location information by encoding information, and transmitting the generated location information to an origin server.

The method may further include transmitting the generated location information to the origin server by including the generated location information in a hypertext transfer protocol (HTTP) request header.

Meanwhile, in the present invention, the delimiter information is an IP or a terminal identification number.

In the present invention, the location code is sector information to which the mobile communication terminal belongs, a base station, base station controller information, and mobile communication exchange information.

A system according to an embodiment of the present invention is characterized in that when a mobile communication terminal is connected, the mobile communication terminal receives delimiter information from the mobile communication terminal and, in cooperation with an authentication authorization charging (AAA) server, Receiving a location code by sending a request message, receiving location information by querying the location-based service platform (LBSP) with the received location code, generating location information by encoding the received location information, A wireless access gateway for transmitting location information to an Origin Server; and a wireless communication unit for checking a location code of the corresponding mobile communication terminal through the delimiter information in cooperation with the wireless access gateway, To the AAA server, the location code received from the wireless access gateway The LBSP for transmitting the calculated location confirmation information to the wireless access gateway, and a controller for receiving the location information from the wireless connection gateway and storing the received location information, and for providing the stored location information when requesting a location for the mobile communication terminal, Includes server.

Further, in the present invention, the radio access gateway transmits the location information to the origin server.

In addition, in the present invention, the origin server is characterized in that it receives a hypertext transfer protocol (HTTP) request message from the wireless access gateway and extracts and stores location information contained in the header of the received HTTP request message .

Meanwhile, in the present invention, the delimiter information is an IP or a terminal identification number.

Meanwhile, in the present invention, the location code includes sector information to which the mobile communication terminal belongs, a base station, base station controller information, and mobile communication exchange information.

The system of another embodiment of the present invention is characterized in that when a mobile communication terminal is connected, it receives delimiter information from the mobile communication terminal, interlocks with a packet gateway support node (GGSN), and transmits, to the GGSN, Receiving a location code by sending a request message, receiving location information by querying the location-based service platform (LBSP) with the received location code, generating location information by encoding the received location information, A wireless access gateway for transmitting location information to an Origin Server, and a wireless access gateway for confirming a location code of the mobile communication terminal through the terminal identification number in cooperation with the wireless access gateway, The GGSN for transmitting to the gateway, and the GGSN for calculating the location code received from the wireless access gateway The LBSP for transmitting the calculated position information to the wireless access gateway, and a controller for receiving the position information from the wireless connection gateway and storing the received position information, and for providing the stored position information when requesting the position for the mobile communication terminal, Server.

In addition, in the present invention, the wireless access gateway includes the location information in a hypertext transfer protocol (HTTP) request header and transmits the location information to the origin server.

In addition, in the present invention, the origin server receives an HTTP request message from the wireless access gateway, and extracts and stores location information included in a header of the received HTTP request message.

Meanwhile, in the present invention, the delimiter information is an IP or a terminal identification number.

Meanwhile, in the present invention, the location code includes sector information to which the mobile communication terminal belongs, a base station, base station controller information, and mobile communication exchange information.

In the present invention, effects obtained by representative ones of the disclosed inventions will be briefly described as follows.

The present invention can confirm the location information of the mobile communication terminal by performing communication with the AAA or GGSN at the wireless access gateway without performing paging at the mobile communication terminal to confirm the location information of the mobile communication terminal, It is possible to reduce the time required compared to the position information confirmation method and to prevent the additional use of the access network and paging resources.

Hereinafter, the operation principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

The present invention confirms location information based on a wireless access gateway in order to check location information of a mobile communication terminal. When a mobile communication terminal accesses a wireless access gateway, authentication, authorization, (GGSN), and acquires the location code from the location based service platform (Location Based Service). The location based service platform Platform, hereinafter referred to as LBSP), and transmits the received location information to the origin server.

FIG. 2 is a block diagram illustrating a structure for determining a location of a mobile communication terminal according to a preferred embodiment of the present invention.

2, the mobile communication system 210 includes a wireless access gateway 212, an AAA / GGSN 214, an LBSP 216, and an origin server 218.

First, the mobile communication terminal 200 is a terminal capable of performing a wireless Internet service, and includes a wireless application protocol (WAP) as an Internet access protocol, an MIE (Microsoft Internet Explorer) based on HTML using an HTTP protocol, The Internet can be connected to the Internet using a browser for wireless Internet access such as a device transport protocol (HDPT) and an i-mode of NTT DOCOMO. A connection is first made to the wireless access gateway 212 of the mobile communication system 210 for wireless Internet access.

The wireless access gateway 212 supports an interworking function with an IP network such as the Internet network. For example, the wireless access gateway 212 may be a WAP Proxy server or a WAP gateway, and when information in the WAP protocol is received by the wireless access gateway 212, the wireless access gateway 212 Converts the HTTP message based on the TCP / IP to the Internet network, converts the HTTP message transmitted from the Internet network to the WAP protocol, and transmits the HTTP message to the mobile communication terminal 200.

As described above, the wireless access gateway 212 performs the wireless Internet service through the connection with the mobile communication terminal 200, and performs an interface between the mobile communication terminal 200 and the origin server 218 performing the position information service do. At this time, as the delimiter information transmitted by the mobile communication terminal 200 to the wireless access gateway 212 for the wireless Internet connection, an IP (Mobile Identity Number) / IMSI (International Mobile Subscriber Identification) And confirms the location code of the mobile communication terminal 200 in cooperation with the AAA / GGSN 214 based on the location information.

That is, the wireless access gateway 212 transmits a location code request message to the AAA / GGSN 214 after interworking with the AAA / GGSN 214. At this time, the identifier of the mobile communication terminal 200, IP or MIN / IMSI information. The AAA / GGSN 214 transmits the location code of the mobile communication terminal 200 identified via IP or MIN / IMSI to the wireless access gateway 212.

The wireless access gateway 212 then queries the LBSP 216 for a location information inquiry request through a location code indicating the current location of the mobile communication terminal 200 confirmed via the AAA / GGSN 214. The wireless access gateway 212, which has received the location information calculated from the LBSP 216, encodes the calculated location information to generate location information, and transmits the generated location information to a hypertext transport protocol (HTTP) (Request Header) to the origin server 218.

At this time, the HTTP request header conforms to the ABNF (augmented Backus-Naur form) (RFC 2234) form as shown in Table 1 below.

Location-Info = "X-SKT-Location-Info"
X-SKT-Location-Info = Location-Value
Location-Value = 1 * 500 CHAR

The AAA / GGSN 214 is connected to the network of the mobile communication terminal 200 and the wireless Internet through a wireless connection between the wireless access gateway 212 and a RADIUS (Diameter) IP allocation for connection, MIN / IMSI, and location information management.

Specifically, mobile telecommunication operators should not only provide modem ports in wired / wireless Internet environment, but should prevent unauthorized use of services, grant and verify subscriber rights level, establish billing and resource planning In order to do this, it is necessary to measure the network usage.

Therefore, AAA is stable based on RADIUS / DIAMETER protocol that systematically provides secure and reliable authentication, authorization and billing to subscribers in cooperation with various network equipment (NAS: Network Attached Storage) in wired / wireless Internet environment And performs a high performance server function with an expandable internal structure. In addition, it provides CIS (Client Identity Server) function that systematically provides session information to subscribers in cooperation with network equipment such as IWF (Interworking Function) / GGSN in wireless Internet environment.

The GGSN acts as an external network and a gateway, through which the mobile communication terminal accesses the wireless Internet. That is, the packet data transmitted or received by the mobile communication terminal is transmitted / received to / from the wireless Internet network through the GGSN.

The GGSN also performs interworking with the wireless access gateway 212 through a RADIUS / DIMM protocol.

As described above, the AAA / GGSN 214 transmits a location code managed by the GGSN through the IP or MIN / IMSI transmitted by the wireless access gateway 212 included in the location code request message as a location code response message to the wireless access gateway 212 .

Then, an IP for a wireless Internet connection is allocated through the IP of the mobile communication terminal 200 provided by the wireless access gateway 212, and the location information management is performed through IP and MIN / IMSI for the assigned mobile communication terminal 200 .

At this time, in order to interwork between the wireless access gateway 212 and the AAA / GGSN 214, interworking is performed in a radios /

The wireless access gateway 212 identifies the location code by interworking with the AAA / GGSN 214. At this time, the location code includes node information of the mobile communication network, sector information of the current location of the mobile communication terminal 200, base station and base station controller information, and mobile communication exchange information.

The LBSP (216) is a platform that provides the most basic and essential functions for LBS, and provides common components that facilitate the development of various location-based services. It provides efficiency, stability, do.

Here, the LBS is a location-based service that combines personalization and mobility, which is a feature of the wireless Internet, and is a comprehensive service utilizing a mobile user equipment capable of accessing the wireless Internet such as a mobile communication terminal or a PDA (Personal Digital Assistants) A system and service based on location information. The location-based information-based service includes not only product information but also driving convenience information, public transportation information, traffic information for performing route search and setting, location tracking for a mobile communication terminal, personal location information , Location tracking information for tracking lost terminals, and so on.

The LBSP 216 performing the LBS function calculates the location of the mobile communication terminal 200 through the location code included in the location information inquiry request message transmitted from the wireless access gateway 212, Information to the wireless access gateway 212.

The origin server 218 is a server that stores the resource or can generate resources. In the present invention, the origin server 218 performs a service based on location, and when receiving an HTTP message from the wireless access gateway 212, Extracts and stores the location information included in the header, and provides the location information stored in the other mobile communication terminal and the mobile communication network subscriber requesting the location information of the mobile communication terminal 200.

3 is a flowchart illustrating a procedure for checking a location of a mobile communication terminal according to a preferred embodiment of the present invention.

3, when the mobile communication terminal 200 accesses the radio access gateway 212 in step 300, the radio access gateway 212 transmits an IP or MIN / IMSI.

In step 304, the wireless access gateway 212 communicates with the AAA / GGSN 214 via the IP or MIN / IMSI of the mobile communication terminal 200 used in the AAA / GGSN 214 in a RADIUS or DIMM Receive the location code. The wireless access gateway 212 receives the location confirmation information of the mobile communication terminal 200 by inquiring the location code of the mobile communication terminal 200 received from the AAA / GGSN 214 in the LBSP 216 in step 306 , And the wireless access gateway 212 encodes the received location confirmation information to generate location information.

The wireless access gateway 212 transmits the location information encoded in step 308 to the origin server 218 in the HTTP header. In step 210, the origin server 218 receives the location information included in the HTTP header from the wireless access gateway 212 in the origin server 210, and transmits the location information service for the mobile communication terminal 200 through the received location information It is possible to provide.

As described above, the present invention confirms location information based on a wireless connection gateway to confirm location information of a mobile communication terminal. When the mobile communication terminal accesses a wireless access gateway, Acquires the location code through interworking with the GGSN, receives the location information by inquiring the acquired location code to the LBSP, and transmits the received location information to the origin server.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, and equivalents thereof.

As described above, the location confirmation method of the mobile communication terminal according to the present invention does not perform paging to the mobile communication terminal in order to confirm the location information of the mobile communication terminal, but performs communication with AAA or GGSN in the wireless access gateway, The location information of the communication terminal can be confirmed. Therefore, it is possible to reduce the time required compared to the location information confirmation method using paging, and is suitable for preventing further use of the access network and paging resources.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a general location determination method of a mobile communication terminal,

FIG. 2 is a block diagram illustrating a structure for identifying a position of a mobile communication terminal according to a preferred embodiment of the present invention;

FIG. 3 is a flowchart illustrating a location checking procedure of a mobile communication terminal according to a preferred embodiment of the present invention. FIG.

Description of the Related Art [0002]

200: mobile communication terminal 210: mobile communication system

212: wireless access gateway 214: AAA or GGSN

216: LBSP 218: Origin Server

Claims (20)

Receiving delimiter information from the mobile communication terminal when the mobile communication terminal is connected to the mobile communication terminal, Receiving a location code response message including a location code by transmitting a location code request message including the delimiter information to the AAA server in cooperation with an authentication authorization accounting (AAA) server; Receiving location information by querying the location-based service platform (LBSP) with the location code; Generating location information by encoding the received location confirmation information; The process of transmitting the generated location information to the origin server Based on the location information of the mobile communication terminal. The method according to claim 1, The method comprises: And transmitting the created location information to the origin server by including the generated location information in a hypertext transfer protocol (HTTP) And transmitting the location information to the mobile communication terminal. The method according to claim 1, The delimiter information includes: IP or a terminal identification number of the mobile communication terminal. The method according to claim 1, Wherein the position code comprises: Wherein the mobile communication terminal includes sector information to which the mobile communication terminal belongs, base station, base station controller information, and mobile communication exchange information. Receiving delimiter information from the mobile communication terminal when the mobile communication terminal is connected to the mobile communication terminal, Receiving a location code response message including a location code by transmitting a location code request message including the delimiter information to the GGSN in cooperation with a packet gateway support node (GGSN) Receiving location information by querying the location-based service platform (LBSP) with the location code; Generating location information by encoding the received location confirmation information; The process of transmitting the generated location information to the origin server Based on the location information of the mobile communication terminal. 6. The method of claim 5, The method comprises: And transmitting the created location information to the origin server by including the generated location information in a hypertext transfer protocol (HTTP) And transmitting the location information to the mobile communication terminal. 6. The method of claim 5, The delimiter information includes: IP or a terminal identification number of the mobile communication terminal. 6. The method of claim 5, Wherein the position code comprises: Wherein the mobile communication terminal includes sector information to which the mobile communication terminal belongs, base station, base station controller information, and mobile communication exchange information. When the mobile communication terminal is connected, it receives the delimiter information from the mobile communication terminal and transmits a location code request message including the delimiter information to the AAA server in cooperation with the authentication authorization charging (AAA) server, Based location service platform (LBSP) to receive the location code, to receive the location code, to receive the location code, to generate location information by encoding the received location code, To the wireless access gateway, An AAA server for checking the location code of the mobile communication terminal through the delimiter information in cooperation with the radio access gateway and transmitting the confirmed location code to the radio access gateway, The LBSP for calculating the location code received from the wireless access gateway and transmitting the calculated location information to the wireless access gateway, The location information is received from the wireless access gateway and stored, and when the location request is received from the mobile communication terminal, Based on the location information of the mobile communication terminal. 10. The method of claim 9, The wireless access gateway includes: And the location information is transmitted to the origin server by including the location information in a hypertext transmission protocol (HTTP) request header. 10. The method of claim 9, The wireless access gateway includes: Wherein the WAP proxy server is a WAP proxy server. 10. The method of claim 9, The origin server, Receiving the HTTP request message from the wireless access gateway and extracting and storing the location information included in the header of the received HTTP request message. 10. The method of claim 9, The delimiter information includes: IP or a terminal identification number of the mobile communication terminal. 10. The method of claim 9, Wherein the position code comprises: Wherein the mobile communication terminal includes sector information to which the mobile communication terminal belongs, base station, base station controller information, and mobile communication exchange information. When the mobile communication terminal is connected, it receives the delimiter information from the mobile communication terminal and transmits a location code request message including the delimiter information to the GGSN in cooperation with the packet gateway support node (GGSN) (LBSP) to receive the location code, receive location information, generate location information by encoding the received location information, and transmit the location information to an origin server, To the wireless access gateway, A GGSN for confirming a location code of a corresponding mobile communication terminal through the terminal identification number in cooperation with the radio access gateway and transmitting the confirmed location code to the radio access gateway; The LBSP for calculating the location code received from the wireless access gateway and transmitting the calculated location information to the wireless access gateway, Receiving the location information from the wireless access gateway and storing the location information, and providing the stored location information when requesting a location for the mobile communication terminal, Based on the location information of the mobile communication terminal. 16. The method of claim 15, The wireless access gateway includes: And the location information is transmitted to the origin server by including the location information in a hypertext transmission protocol (HTTP) request header. 16. The method of claim 15, The wireless access gateway includes: Wherein the WAP proxy server is a WAP proxy server. 16. The method of claim 15, The origin server, Receiving the HTTP request message from the wireless access gateway and extracting and storing the location information included in the header of the received HTTP request message. 16. The method of claim 15, The delimiter information includes: IP or a terminal identification number of the mobile communication terminal. 16. The method of claim 15, Wherein the position code comprises: Wherein the mobile communication terminal includes sector information to which the mobile communication terminal belongs, base station, base station controller information, and mobile communication exchange information.
KR1020070112275A 2007-11-05 2007-11-05 Method and system for generating location infromation of mobile terminal based on wireless access gateway KR101394982B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100655579B1 (en) 2005-06-29 2006-12-08 에스케이 텔레콤주식회사 System and method of location management for providing service based location in mobile
KR20070020657A (en) * 2005-08-16 2007-02-22 에스케이 텔레콤주식회사 Method for measuring location of mobile phone having gps module within in a portable communication network
KR20070027010A (en) * 2005-08-29 2007-03-09 유엔젤주식회사 System, method for registering location of mobile device, and location-based service method
KR20070026925A (en) * 2005-08-27 2007-03-09 엘지전자 주식회사 Method and system for providing terminal location service by interworking between mobile communication network and wlan

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100655579B1 (en) 2005-06-29 2006-12-08 에스케이 텔레콤주식회사 System and method of location management for providing service based location in mobile
KR20070020657A (en) * 2005-08-16 2007-02-22 에스케이 텔레콤주식회사 Method for measuring location of mobile phone having gps module within in a portable communication network
KR20070026925A (en) * 2005-08-27 2007-03-09 엘지전자 주식회사 Method and system for providing terminal location service by interworking between mobile communication network and wlan
KR20070027010A (en) * 2005-08-29 2007-03-09 유엔젤주식회사 System, method for registering location of mobile device, and location-based service method

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