KR100958919B1 - Method, apparatus and system for measuring the quality of packet data - Google Patents

Abstract

A method, apparatus, and system for measuring the quality of packet data are provided.

According to an embodiment of the present invention, a method for measuring quality of packet data includes: extracting a first identifier from a first message transmitted by SGSN; Extracting a second identifier from a second message sent by the GGSN; Measuring the quality of the packet data by analyzing a payload of packet data transmitted and received using GTP tunneling between the SGSN and the GGSN using the extracted first identifier and the extracted second identifier. do.

WCDMA, SGSN, GGSN

Description

Method, apparatus and system for measuring the quality of packet data

The present invention relates to the transmission of wireless packet data, and more particularly, to the transmission and reception of packet data transmitted and received in a wireless data network based on asynchronous wideband code division multiple access (WCDMA) or high speed downlink packet access (HSDPA). A method, apparatus, and system for measuring quality of packet data that can analyze packet data using a tunnel termination identifier.

Recently, a wireless Internet service that can provide a service using the Internet through a wireless communication network has been commercialized even while the user of the mobile communication terminal is moving without restriction of a place. In order to provide such a service, a mobile communication system has been developed through a first generation analog AMPS (Advanced Mobile Phone Systems) method and a second generation cellular and personal communication service (PCS) method. Recently, the International Mobile Telecommunication-2000 (IMT-2000) scheme, which is a third generation mobile communication system, has become popular. IMT-2000 was developed to ensure personal mobility and high-speed data transmission to ensure mobility between countries by integrating systems of countries using different radio access standards. The IMT-2000 has been developed separately from a synchronous CDMA (Code Division Multiple Access) 2000 system centered on Korea and the United States, and a Universal Mobile Telecommunication Services (UMTS) or WCDMA system centered on Europe.

WCDMA system is leading the standardization in 3GPP (3 Generation Partnership Project). It is an asynchronous communication system developed by combining CDMA technology with European GSM method. It integrates various systems such as cellular, wireless telephone, wireless LAN and satellite communication. And provides international roaming to make calls anywhere in the world. In addition, it is possible to download a multimedia data, such as voice and image data, VOD streaming that can be played in real time, and MMS that can send and receive video files with a mobile phone is possible.

In addition, the 3.5-generation mobile communication services high-speed downlink packet access (HSDPA) scheme referred to as the 3GPP (3 ^rd Generation Partnership Project) is a key technology of the announced release 53 May 2002, high-speed packet-based data service in WCDMA standard It is a technology that can be provided by. The HSDPA method can provide a service by improving the WCDMA system without additional investment in the base station.

On the other hand, there is a need for a method and apparatus for analyzing quality of wireless packet data capable of capturing wireless packet data transmitted / received in the WCDMA method or the HSDPA method and analyzing a call connection success rate or a service usage rate of a corresponding subscriber.

The technical problem to be achieved by the present invention is to analyze the quality of packet data that can measure the quality of packet data by analyzing wireless packet data transmitted and received through GTP tunneling using the tunnel termination identifier of SGSN and the tunnel termination identifier of GGSN. It is to provide a method, apparatus, and system for measuring.

The object of the present invention is not limited to the above-mentioned object, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method of measuring quality of packet data, the method including: extracting a first identifier from a first message transmitted by SGSN; Extracting a second identifier from a second message sent by the GGSN; Measuring the quality of the packet data by analyzing a payload of packet data transmitted and received using GTP tunneling between the SGSN and the GGSN using the extracted first identifier and the extracted second identifier. do.

In addition, the method for measuring the quality of the packet data according to an embodiment of the present invention for achieving the above object, the SGSN receiving a PDP context activation request message from the mobile terminal; SGSN transmitting a PDP context creation request message including its tunnel termination identifier to GGSN; Sending, by the GGSN, a PDP context creation response message including its tunnel termination identifier to the SGSN; Generating, by the SGSN, a GDP tunneling between the SGSN and the GGSN by transmitting a PDP context activation response message to the mobile terminal in response to the PDP context activation request message; And measuring the quality of the packet data by analyzing the payload of the packet data transmitted and received using the generated GTP tunneling.

In addition, the apparatus for measuring the quality of the packet data according to an embodiment of the present invention for achieving the above object, the first identifier for extracting the tunnel end identifier of the SGSN from the PDP context creation request message transmitted by SGSN Extraction unit; A second identifier extractor for extracting a tunnel end identifier of the GGSN from a PDP context creation response message transmitted by a GGSN in response to the PDP context creation request message; And a quality measurement unit configured to measure the quality of the packet data using the tunnel termination identifier of the SGSN and the tunnel termination identifier of the GGSN.

In addition, the system for measuring the quality of packet data according to an embodiment of the present invention for achieving the above object, SGSN for receiving a PDP context activation request message from the mobile terminal, and transmits a PDP context creation request message; A GGSN receiving the PDP context creation request message from the SGSN and transmitting a PDP context creation response message to the SGSN in response to the received PDP context creation request message; The packet data by analyzing a payload of packet data transmitted using GTP tunneling between the SGSN and the GGSN generated by the SGSN in response to the PDP context activation request message to the mobile terminal; It includes a quality measuring device for measuring the quality of.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the embodiment of the present invention as described above, by analyzing the quality of the packet data by using the tunnel end identifier of the SGSN and the tunnel end identifier of the GGSN wireless packet data transmitted and received through GTP tunneling, the existing terminal IP address It is faster and more efficient than packet analysis.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete, and are common in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

1 is a diagram illustrating an apparatus for measuring quality of general wireless packet data. Referring to FIG. 1, a wireless data quality measuring apparatus 300 transmits and receives between a Serving GPRS Support Node (SGSN) 200 and a Gateway GPRS Support Node (GGSN) 400. By capturing all the packet data, and analyzing the packet corresponding to the specific subscriber identification number (IMSI) using the tunnel termination identifier of SGSN 200 and the tunnel termination identifier of GGSN 400, the call connection success rate or the corresponding The service utilization rate of the subscriber can be measured. Such a quality measurement method may include analyzing not only the section between the SGSN 200 and the GGSN 400 shown in FIG. 1, but also the section between the GGSN 400 and an external packet data network (not shown). However, in an embodiment of the present invention to be described later, a method of measuring quality by analyzing packet data of a section between the SGSN 200 and the GGSN 400 will be described as an example.

2 is a flowchart illustrating a method of measuring packet quality in a process of transmitting and receiving general wireless packet data.

First, the mobile terminal 100 prepares to transmit and receive a message with the SGSN 200 through a process of accessing a radio access network (RAN) (not shown) (S102).

Separately, an external content providing server (not shown) sets its IP address as a source IP address and an IP address assigned to the mobile terminal 100 as a destination address, and then sets packet data to an external packet data network. When transmitting to the UE (not shown), the GGSN 400 receives packet data through an external packet data network. Here, the header portion of the packet data transmitted by the content providing server includes a destination IP (Internet Protocol) address, that is, a terminal IP address of the mobile terminal 100. In general, in order to provide the mobile terminal 100 with packet data received from an external content providing server in the WCDMA system, an IP address should be allocated to the mobile terminal 100 by default.

The terminal IP address is a unique IP address previously assigned to the mobile terminal 100 and may be a fixed IP address or a dynamic IP address which is always fixed. Here, the GGSN 400 may include a terminal IP address, IMSI, which is an identification number of the mobile terminal, and an access point network (APN) indicating a packet data network (PDN) accessible by the GGSN 400 in its database table. Can be.

Subsequently, the SGSN 200 receives a packet data protocol (PDP) context activation request (PDP) context activation request message from the mobile terminal 100 to establish a session between an external content providing server and the mobile terminal 100. The PDP context activation operation is performed (S104). In this case, the mobile terminal 100 transmits the APN in the PDP context activation request message to the SGSN 200.

The SGSN 200 checks the IP address of the GGSN 400 requesting data communication with the mobile terminal 100 through the APN, and serves as a gateway for packet data received from an external content providing server. In operation S106, a PDP context request message for requesting connection establishment for packet data communication is transmitted. The Create PDP Context Request message includes an APN that designates a specific GGSN 400.

The SGSN 200 generates a GPRS Tunneling Protocol (GTP) tunnel with a specific GGSN 400 required by the APN among a plurality of accessible GGSNs for the PDP connection request. The APN may be referred to as an identifier for identifying a path for transmitting a packet for a specific service, that is, a GTP tunnel, from the SGSN 200 to the GGSN 400.

SGSN 200 establishes a session between SGSN 200 and GGSN 400 by receiving a PDP Context Response message in response to the PDP context creation request message from GGSN 400 (S108). ).

Next, the SGSN 200 in which a session is established with the GGSN 400 sends a PDP context activation message indicating that packet data communication between the mobile terminal 100 and the GGSN 400 is possible. 100) (S110). APN is also included in the PDP Context Response message.

Thus, a GTP tunnel is established through PDP activation for supporting a specific service between the mobile terminal 100 and the GGSN 400, and packet data can be transmitted and received through the GTP tunnel (S114).

On the other hand, the quality measuring device 300 extracts the IP address assigned to the mobile terminal 100 through the IMSI obtained in the above-described process (S112). In this state, when packet data is transmitted to the SGSN 200 through the GPRS Tunneling Protocol (GTP), the SGSN 200 performs a tunneling process to transfer the packet data provided by an external content providing server to the mobile terminal. A wired / wireless communication channel for providing to 100 is set, and packet data is transmitted and received through the wired / wireless communication channel (S114). Here, GTP is a protocol defined for communication between SGSN 200 and GGSN 400. In addition, the wired / wireless communication channel is not only a GTP tunnel established between the SGSN 200 and the GGSN 400, but also a wired channel between the SGSN 200 and a UTRAN (not shown) and a radio between the UTRAN and the mobile terminal 100. The concept of including channels. Through the wired / wireless communication channel configured as described above, the packet data received from the external content providing server to the GGSN 400 may be delivered to the mobile terminal 100 via the SGSN 200.

In such an environment, the quality measuring apparatus 300 extracts packet data with the IP address of the mobile terminal 100 and analyzes it (S116). That is, in order to analyze the service usage of the mobile terminal 100, by using the IMSI IP address assigned to the mobile terminal 100, by mapping the IP address in the packet data through GTP tunneling, You measure the services you use.

However, this quality measurement method is a method of analyzing packet data using an IP address assigned to the mobile terminal 100. Since the packet data transmitted through GTP tunneling must be captured one by one to find and analyze the IP address of the terminal, it is inefficient. There was a problem. Therefore, with reference to FIGS. 3 to 6 to be described later, an efficient measurement of packet data quality in a WCDMA or HSDPA system according to an embodiment of the present invention will be described.

3 is a flowchart illustrating an overall call processing process for measuring the quality of packet data according to an embodiment of the present invention.

Since the process of activating the PDP context for the GTP tunneling process among the entire flows shown in FIG. 3 is the same as the process of FIG. 2 described above, a detailed description of parts overlapping with FIG. 2 will be omitted.

First, the mobile terminal 100 transmits an PDP context activation request message to the SGSN 200 in a state in which the mobile terminal 100 is connected to a Radio Access Network (RAN) (not shown). The PDP context activation operation for establishing a session between the external content providing server and the mobile terminal 100 is performed (S204).

The SGSN 200 checks the IP address of the GGSN 400 requesting data communication with the mobile terminal 100 through the APN, and serves as a gateway for packet data received from an external content providing server (not shown). A PDP context request message for requesting connection establishment (that is, setting up a GTP tunnel) for packet data communication is transmitted to the performing GGSN 400 (S206). The PDP context creation request message includes a Tunnel Endpoint Identifier (TEID) of the SGSN 200.

In general, in order to provide a packet service using a GPRS network, a session must be established by establishing a session between the SGSN 200 and the GGSN 400. It builds a database and uses TEID to identify the PDP context in the database.

Upon receiving the PDP context creation request message, the GGSN 400 searches the database with the TEID included in the message and allocates a PDP context having the corresponding TEID as an identifier.

The SGSN 200 receives a Create PDP Context Response message including a tunnel termination identifier of the GGSN 400 from the GGSN 400 in response to the PDP context creation request message. A session is established between the 200 and the GGSN 400 (S208).

Next, the SGSN 200 in which a session is established with the GGSN 400 sends a PDP context activation message indicating that packet data communication between the mobile terminal 100 and the GGSN 400 is possible. By transmitting to 100, a GTP tunnel is established through PDP activation for supporting a specific service between the mobile terminal 100 and the GGSN 400 (S210).

On the other hand, the quality measurement apparatus 300 is a tunnel end identifier of the SGSN 200 and PDP context creation response (Create PDP Context Response) message in the PDP context creation request (Create PDP Context Request) message transmitted and received in step S206 and S208 The two terminal identifiers may be combined by capturing the tunnel termination identifier of the GGSN 400 in operation S212. Of course, these two identifiers can be stored separately.

Meanwhile, a GTP tunnel is established through PDP activation for supporting a specific service between the mobile terminal 100 and the GGSN 400, and packet data is transmitted and received through the GTP tunnel (S214). In this state, the quality measuring apparatus 300 may measure the quality of packet data by analyzing the packet data using the tunnel termination identifier of the SGSN 200 and the tunnel termination identifier of the GGSN 400 (S216). .

That is, in GTP tunneling, the tunnel terminal identifier of the SGSN 200 is recorded in the data transmitted from the mobile terminal 10 to the external packet data network (not shown) through the SGSN 200, and the external packet data network is recorded. Since the tunnel termination identifier of the GGSN 400 is recorded in the packet data transmitted from the GGSN 400 to the mobile terminal 100, the quality measurement apparatus 300 stores the tunnel termination identifier of the GGSN 400 in the GTP tunnel. The packet data may be distinguished by mapping with a tunnel end identifier of packet data transmitted and received through the tunnel.

This method is faster and more efficient than the method of FIG. 2 in which packet data is monitored and analyzed using an IP address assigned to the mobile terminal 100. In FIG. 2, the contents of each packet data are checked and analyzed after finding the IP of the terminal. However, in the scheme of FIG. 3 according to the embodiment of the present invention, the IP of the terminal exists in each packet data. This is because the quality is analyzed using only the tunnel end identifier in the contents of the GTP located in the lower protocol stack.

Meanwhile, in the embodiment of the present invention, the quality to be analyzed may include a call connection success rate, call disconnection rate, and utilization rate of the mobile terminal 100 for each packet service.

4 is a diagram illustrating a system for measuring the quality of packet data according to an embodiment of the present invention.

The mobile terminal 100 receives a signal transmitted from a radio access network (RAN) 150 in a serving cell and wirelessly receives a signal according to voice or data input from a subscriber. To be sent). The mobile terminal 100 according to the embodiment of the present invention is a terminal that automatically performs a session establishment procedure and transmits and receives packet data according to an external session establishment request. In addition, the mobile terminal 100 for transmitting and receiving packet data includes a wireless application protocol (WAP), which is a wireless Internet access protocol, a Microsoft Internet Expolrer (MIE) based on HTML using an HTTP protocol, and a handheld device transmission protocol. (HDPT; Handheld Device Transport Protocol), FTP is used to send and receive data to the external network.

A radio access network (RAN) 150 including a base station 151 and a radio network controller (RNC) 152 plays a role of ensuring mobility of the mobile terminal 100 and performs handoffs. Hand-off) and radio resource management functions. The radio access network 150 may be implemented by a radio transceiver subsystem (RTS) 151 and a base station controller 152 existing between a switch (not shown) and the mobile terminal 100.

The base station 151 performs a radio access termination function with a subscriber station conforming to 3GPP (3 Generation Partnership Project) radio access standard. Especially, in case of a 3G mobile communication network, Node B plays a role and moves to an uplink. Receives information transmitted from the physical layer of the terminal, and transmits data to the mobile terminal through the downlink, and serves as an access point for the mobile terminal to transmit and receive voice, video, and data traffic. In addition, location registration is performed to identify the location of a terminal located in a cell unit and exists in a cell area under its control and allocates a radio channel for voice and data communication to the terminal.

The base station controller (RNC) 152 manages wired and wireless channels, protocol matching with the mobile terminal 100, protocol matching between base stations, soft handoff processing, protocol matching with the core network, GPRS (General Packet Radio Service) connection, and failure. It is responsible for the functions required for wireless call processing such as management, system loading, and so on. Here, GPRS supports a data rate of 384 Kbps, provides a multimedia mail, and is an asynchronous communication system that maximizes the efficiency of transmission lines by packet data transmission.

Now let's look at the components of the core network.

The Serving GPRS Support Node (SGSN) 200 has a hardware structure for providing an Asynchronous Transfer Mode (ATM) based switch and routing connection for a GPRS service, and the mobile terminal 100 in a service area. It is a node that delivers packet data. In addition, it has functions such as packet routing and transmission, mobility management of a terminal, logical link management, authentication, and charging.

The SGSN 200 according to an embodiment of the present invention performs a PDP context activation process to establish a session for packet data communication with the mobile terminal 100. In this case, the SGSN 200 receives a PDP context activation request message from the mobile terminal 100 and transmits a PDP context creation request message to the GGSN 400.

The Gateway GPRS Support Node (GGSN) 400 is a node that manages a connection function between the GPRS backbone network and the external packet data network 500. The GGSN 400 manages a session for packet data services and processes routing of packet data. It provides an interface for connecting the core network and the external packet data network 500. In addition, the GPRS packet received from the SGSN 200 is converted into an appropriate packet data protocol (PDP) format (for example, IP.X.25) and transmitted, and the PDP address of the received packet data is transferred to the IP of the mobile terminal 100. Convert to address.

In addition, the GGSN 400 according to an embodiment of the present invention receives a PDP context creation request message for requesting session establishment from the SGSN 200, and a PDP context creation response message including an IP address of the mobile terminal 100. Establishes a session with the mobile terminal 100 by transmitting it to the SGSN 200.

The content providing server 600 is a server capable of supplying content to the mobile terminal 100, and the external packet data network 500 serves to deliver content provided by the content providing server 600 to a core network.

On the other hand, the quality measuring device 300 serves to measure the quality of the packet data by analyzing the payload of the packet data transmitted using GTP tunneling generated between the SGSN 200 and the GGSN 400, This will be described in detail with reference to FIG. 5.

FIG. 5 is a block diagram of an apparatus for measuring the quality of packet data in the system for measuring the quality of packet data in FIG. The quality measuring apparatus 300 includes a first identifier extracting unit 310, a second identifier extracting unit 320, an analyzing unit 330, and a quality measuring unit 340.

The first identifier extractor 310 extracts a tunnel endpoint ID of the SGSN 200 by capturing a PDP context creation request message transmitted by the SGSN 200.

The second identifier extractor 320 extracts the tunnel termination identifier of the GGSN 400 from the PDP context creation response message transmitted by the GGSN 400 in response to the PDP context creation request message.

The analyzer 330 uses the tunnel termination identifier of the SGSN 200 extracted by the first identifier extractor 310 for packet data transmitted from the mobile terminal 100 to the external packet data network 500. Analyze In addition, the analyzer 330 may extract the tunnel end identifier of the GGSN 400 extracted by the second identifier extractor 320 for packet data transmitted from the external packet data network 500 to the mobile terminal 100. Analyze using

The quality measuring unit 340 measures the quality of packet data by using the result analyzed by the analyzing unit 330 and identification information (ie, IMSI) of the mobile terminal. Here, the quality of the packet data is a concept including a call connection success rate of the mobile terminal 100, a call disconnection rate, and a utilization rate of the mobile terminal 100 for each packet service.

6 is a flowchart illustrating a method of measuring quality of packet data according to an embodiment of the present invention.

First, the first identifier extractor 310 extracts the tunnel end identifier of the SGSN 200 from the PDP context creation request message transmitted by the SGSN 200 (S602).

The second identifier extractor 400 extracts the tunnel end identifier of the GGSN 400 from the PDP context creation response message transmitted by the GGSN 400 (S604).

The analyzer 330 analyzes the packet data transmitted from the mobile terminal 100 to the external packet data network 500 using the tunnel end identifier of the SGSN 200 (S606). In addition, the packet data transmitted from the external packet data network 500 to the mobile terminal 100 is analyzed using the tunnel termination identifier of the GGSN 400 (S608).

Finally, the quality measuring unit 340 measures the quality using the result of analyzing the packet data and the identification information (IMSI) of the mobile terminal 100 (S610).

Embodiments of the method for measuring the quality of packet data described above may be read by a computer on a medium, and may be executed through code or instructions for controlling at least one processing element. The medium may store or transmit computer readable codes. The computer readable code may be recorded or transmitted through various types of media. Examples of such media include transmission media such as recording media, magnetic storage media (e.g. ROMs, floppy disks, hard disks), optical recording media (e.g. CD-ROMs or DVDs), and carrier waves. Can be mentioned.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

1 is a diagram illustrating an apparatus for measuring quality of general wireless packet data.

2 is a flowchart illustrating a method of measuring packet quality in a process of transmitting and receiving general wireless packet data.

3 is a flowchart illustrating an overall call processing process for measuring the quality of packet data according to an embodiment of the present invention.

4 is a diagram illustrating a system for measuring the quality of packet data according to an embodiment of the present invention.

FIG. 5 is a block diagram of an apparatus for measuring the quality of packet data in the system for measuring the quality of packet data in FIG.

6 is a flowchart illustrating a method of measuring quality of packet data according to an embodiment of the present invention.

(Description of the main parts of the drawing)

100: mobile terminal 150: wireless access network

151: base station 152: base station controller

200: SGSN 300: quality measuring device

400: GGSN

Claims (15)

In the method for measuring the quality of packet data transmitted and received between the mobile terminal and the external data network, Extracting a first identifier from a first message sent by a packet switched support node device (SGSN); Extracting a second identifier from a second message sent by a packet gateway support node device (GGSN); Measuring the quality of the packet data by analyzing the payload of the packet data transmitted and received using GTP tunneling between the SGSN and the GGSN using the extracted first identifier and the extracted second identifier. And measuring the quality of the packet data. The method of claim 1, The first message is a PDP context creation request message sent from the SGSN to the GGSN, and wherein the first identifier is a tunnel end identifier of the SGSN. The method of claim 1, The second message is a PDP context creation response message sent from the GGSN to the SGSN to respond to a PDP Content Request message, wherein the second identifier is a tunnel termination identifier of the GGSN. . The method of claim 1, Measuring the quality of the packet data, Analyzing packet data transmitted from the mobile terminal to the external data network using the first identifier; Analyzing packet data transmitted from the external data network to the mobile terminal using the second identifier; And measuring the quality by using the result of analyzing the packet data and the identification information of the mobile terminal. The method of claim 4, wherein And the quality comprises a call connection success rate of the mobile terminal, a call disconnection rate, and a utilization rate of the mobile terminal for each packet service. Receiving, by the packet switched support node apparatus (SGSN), a PDP context activation request message from the mobile terminal; The SGSN transmitting a PDP context creation request message including its tunnel end identifier to a packet gateway support node device (GGSN); Sending, by the GGSN, a PDP context creation response message including its tunnel termination identifier to the SGSN; Generating, by the SGSN, a GDP tunneling between the SGSN and the GGSN by transmitting a PDP context activation response message to the mobile terminal in response to the PDP context activation request message; Measuring the quality of the packet data by analyzing the payload of the packet data transmitted and received using the generated GTP tunneling. The method of claim 6, Measuring the quality of the packet data, And measuring the quality using the tunnel end identifier of the SGSN, the tunnel end identifier of the GGSN, and the identification information of the mobile terminal, obtained by analyzing the payload of the packet data. The method of claim 7, wherein And the quality comprises a call connection success rate of the mobile terminal, a call disconnection rate, and a utilization rate of the mobile terminal for each packet service. In the device for measuring the quality of packet data transmitted and received between the mobile terminal and the external data network, A first identifier extracting unit for extracting a tunnel end identifier of the SGSN from a PDP context creation request message transmitted by a packet switched support node apparatus (SGSN); A second identifier extractor for extracting a tunnel end identifier of the GGSN from a PDP context creation response message transmitted by a packet gateway support node device (GGSN) in response to the PDP context creation request message; And a quality measuring unit for measuring the quality of the packet data using the tunnel termination identifier of the SGSN and the tunnel termination identifier of the GGSN. The method of claim 9, The packet data transmitted from the mobile terminal to the external data network is analyzed using the tunnel termination identifier of the SGSN, and the packet data transmitted from the external data network to the mobile terminal is analyzed using the tunnel termination identifier of the GGSN. Further comprising an analysis unit, The quality measuring unit measures the quality of the packet data by using the results analyzed by the analysis unit and the identification information of the mobile terminal. The method of claim 10, And the quality comprises a call connection success rate of the mobile terminal, a call disconnection rate, and a utilization rate of the mobile terminal for each packet service. A packet switched support node device (SGSN) which receives a PDP context activation request message from the mobile terminal and transmits a PDP context creation request message; A packet gateway support node device (GGSN) receiving the PDP context creation request message from the SGSN and sending a PDP context creation response message to the SGSN in response to the received PDP context creation request message; The packet data by analyzing a payload of packet data transmitted using GTP tunneling between the SGSN and the GGSN generated by the SGSN in response to the PDP context activation request message to the mobile terminal; And a quality measuring device for measuring the quality of the packet data. 13. The method of claim 12, The quality measuring device, A first identifier extractor for extracting a tunnel end identifier of the SGSN from a PDP context creation request message transmitted by the SGSN; A second identifier extractor for extracting a tunnel end identifier of the GGSN from a PDP context creation response message transmitted by the GGSN in response to the PDP context creation request message; And a quality measuring unit for measuring the quality of the packet data using the tunnel termination identifier of the SGSN and the tunnel termination identifier of the GGSN. The method of claim 13, The packet data transmitted from the mobile terminal to the external data network is analyzed using the tunnel termination identifier of the SGSN, and the packet data transmitted from the external data network to the mobile terminal is analyzed using the tunnel termination identifier of the GGSN. Further comprising an analysis unit, The quality measuring unit measures the quality of the packet data using the results analyzed by the analysis unit and the identification information of the mobile terminal. The method of claim 14, The quality comprises a call connection success rate of the mobile terminal, a call disconnection rate, and a utilization rate of the mobile terminal for each packet service.

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