KR100655185B1 - Call analysis system in mobile communication network - Google Patents

Abstract

The present invention relates to a call analysis system using analysis of packet data in a mobile communication network. The call analysis system includes: a first analyzer for collecting packets input to a packet data serving node (PDSN) and extracting subscriber log information from the collected packets; and collecting packets output from the PDSN, and collecting the packets output from the collected packets. A controller that integrates and manages a second analyzer extracting subscriber log information, subscriber log information extracted from the first analyzer and the second analyzer, and generates statistical analysis information according to a predetermined format, and integrated by the controller And a database for storing the registered subscriber log information.

According to the present invention, it is possible to store and manage log information for all subscribers accessing the network, and to provide call performance and quality data for each region, equipment vendor, and terminal using the log information.

CDMA 2000, Packet Data

Description

Call analysis system in mobile communication network {CALL ANALYSIS SYSTEM IN MOBILE COMMUNICATION NETWORK}

1 is a schematic diagram illustrating a CDMA 2000 1x network according to the prior art.

2 is a block diagram schematically illustrating a call analysis system according to a preferred embodiment of the present invention.

Figure 3 is a flow chart showing in sequence the operation of the first analyzer of the call analysis system according to a preferred embodiment of the present invention.

4 is a flowchart sequentially showing the operation of the second analyzer of the call analysis system according to the preferred embodiment of the present invention.

Explanation of symbols for the main parts of the drawings>

200: call analysis system

210: first analyzer

212: first packet collection unit

214: first packet analyzer

220: second analyzer

222: second packet collection unit

224: second packet analysis unit

230: controller

240: database

The present invention relates to a performance analysis system and method for a mobile communication network, and more particularly, to generate information about all subscribers through analysis of packet data transmitted and received in a mobile communication network, and based on the generated information. The present invention relates to a performance analysis system and method for a mobile communication network capable of analyzing performance and generating statistical data.

In recent years, wireless Internet has been activated with the rapid development of wired / wireless communication technology. The backbone network of the wireless Internet provides a variety of wireless data services including the wireless Internet to mobile terminals by establishing a packet network in an existing mobile telephone network. The packet network described above is composed of a packet data service node configured to provide a data service, and a packet transmission network for packet transmission with the data network. The methods of constructing a packet network for providing a wireless data service are classified into UMTS and CDMA2000. The Universal Mobile Telecommunication System (UMTS) is standardized by 3GPP, a European-based standardization organization, and Code Division Multiple Access 2000 (CDMA 2000) is standardized by 3GPP2, a North American-based standardization organization.

CDMA2000 1x is an evolution of the second generation service, and can provide improved data transmission speed and various services. In particular, the packet data can be transmitted at a maximum speed of 144Kbps, and it supports the dormant state to efficiently use the traffic channel of the wireless section.

Hereinafter, a configuration of a network according to the CDMA 2000 1x scheme will be described with reference to FIG. 1. As shown in Fig. 1, packet data of CDMA 20001x is processed by a packet core network. The packet core network is largely referred to as a packet control function server (hereinafter referred to as a 'PCF'), a packet data serving node (hereinafter referred to as a 'PDSN') server, and a home agent (hereinafter referred to as 'PCF'). HA ') server, authentication, authorization, and accounting server (Authentication, Authorization, and Accounting Server (hereinafter referred to as' AAA')) consists of four nodes, Simple IP (Mobile Simple IP) and Mobile IP (Mobile IP) call Perform the process. The function of each node will be described below.

First, the Packet Control Function (PCF) server performs a buffering function and a state management function of a terminal until data transmitted from the PDSN server is transmitted to the air.

Packet Data Serving Node (PDSN) server is a foreign agent (FA) function in mobile IP and terminal-to-point protocol (PPP) Performs the Network Access Server (hereafter referred to as NAS) configuration. The home agent (HA) server manages the mobility of the terminal in the mobile IP. Finally, the AAA server performs authentication, authorization, and charging information collection for the user.

On the other hand, PCF and PDSN are always located in the visited network, while HA and AAA use home network equipment. That is, when the subscriber roams into the visited network, the subscriber uses the visited network's PCF and PDSN and authenticates with the home network's AAA server via the visited network's AAA. In case of mobile IP, HA of home network is in charge of assigning or managing user's IP.

Hereinafter, the call processing process will be described schematically. Wireless packet data service according to CDMA 20001x basically distinguishes voice and data, and is required to undergo Home Location Register (HLR) authentication for voice before using data service. The HLR certified user performs the following call processing procedure.

(1) When the user inputs ID and password at the terminal requesting data service, the user roaming to the visited network adds a Network Access Identifier after the ID.

(2) Next, after performing the PPP connection procedure of LCP, Authentication, and IPCP, the PDSN transmits an access request message to the local AAA when the mobile IP registration request message is received from the terminal.

(3) After checking the network access identifier, the local AAA sends an access request message to the corresponding home AAA. After receiving the access request message, the home AAA transmits the access grant message to the local AAA after completing the subscriber authentication.

(4) The local AAA sends an access grant message to the PDSN.

(5) The PDSN transmits the registration request message received in (2) to the HA, and registers information of the terminal when receiving the registration response message from the HA.

(6) A packet data service along a mobile IP packet transmission / reception path is provided.

On the other hand, network monitoring and statistical equipment for the mobile communication network as described above are provided. By the way, the conventional network monitoring and statistical equipment provides statistical data on the performance and quality in the mobile communication network as described above, but is provided only by a specific service server or content server. Therefore, statistical data on the performance or quality of the communication network is provided to be limited to the service provided by the corresponding service server or content server. As a result, there is a problem that it is difficult to grasp the performance and quality of the entire mobile communication network, and the content is also limited to the content that can be provided at the application level of the service server.

The information provided by the conventional network monitoring and statistical equipment having such a problem is very poor in scalability due to the rapid change of the environment and the various needs of the user. In addition, the conventional network monitoring and statistical equipment to prepare the statistical data based on the data for a specific subscriber, using the information based on the limited data to determine the overall performance and quality in the mobile network and the reality and It can also lead to disparity.

 SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a system and method for performance analysis of a mobile communication network capable of analyzing packet data in a mobile communication network and generating information for all subscribers using the analyzed results. will be.

Another object of the present invention is to provide a performance analysis system and method of a mobile communication network capable of analyzing the performance of a network and generating statistical data by using information on all subscribers in the mobile communication network.

A feature of the present invention for achieving the above technical problem is a call analysis system in a mobile communication network comprising a first data transmission and reception server, a second data transmission and reception server, a content server,

A first analyzer for collecting packets input to the second data transmission and reception server and extracting subscriber log information from the collected packets;

A second analyzer for collecting packets output from the second data transmission and reception server and extracting subscriber log information from the collected packets;

A controller for integrating and managing subscriber log information extracted from the first analyzer and the second analyzer, and generating statistical analysis information according to a predetermined format; and

It is to provide a database for storing the subscriber log information integrated by the controller, to store and manage log information for all subscribers connected to the network, and to provide network performance analysis data using the log information.

The first analyzer of the call analysis system according to another aspect of the present invention, the first packet collecting unit for collecting the packet input to the second data transmission and reception server, and the subscriber using the packet received from the first packet collection unit And a first packet analyzer configured to analyze log information and transmit the analyzed information to the second analyzer or the controller.

The second analyzer of the call analysis system according to another aspect of the present invention, the second packet collecting unit for collecting the packet output from the second data transmission and reception server, the information received from the first analyzer, and the second And a second packet analyzer configured to analyze subscriber log information by using the packet received from the packet collector, and transmit the analyzed information to the controller.

The first analyzer of the call analysis system according to another aspect of the present invention is the start time of the signal message, IP address, subscriber number of the subscriber log information collected from the packet transmitted from the first data transmission and reception server to the second data transmission and reception server To the second analyzer.

The second analyzer of the call analysis system according to another aspect of the present invention receives the start time, IP address, and subscriber number of the signal message among the subscriber log information from the first analyzer, and analyzes the collected packet using the received information. do.

The controller of the call analysis system according to another aspect of the present invention stores and manages subscriber log information for each event using a subscriber number as a key when each event occurs.
In the call analysis system having the above-mentioned characteristics, the first data transmission / reception server is a packet control function (PCF) server, and the second data transmission / reception server is a packet data serving node (PDSN) server.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the network performance analysis system for a mobile communication network according to a preferred embodiment of the present invention.

2 is a configuration diagram showing the overall network performance analysis system according to the present invention. 2, a system 200 according to the present invention includes a first analyzer 210, a second analyzer 220, a controller 230, and a database 240.

The first analyzer 210 collects packets transmitted from the PCF of the mobile communication network to the PDSN, and a first packet analyzer analyzing the packets collected by the first packet collector. 214. The first analyzer having such a configuration collects packets and analyzes a subscriber session based on subscriber information and wireless information from the collected packets.

Here, the first packet collection unit 212 collects the packets input to the PDSN, and transmits the packets to the first packet analyzer 214. The first packet analyzer extracts the subscriber number by analyzing the MNID parameter of the A11 message from the packets collected by the first packet collector.

The first packet analyzer extracts information about a terminal and a base station provided by a mobile communication service provider by analyzing a start message generated first among packets transmitted from a subscriber terminal. In addition, the first packet analysis unit starts time of various messages according to a call flow, such as subscriber authentication, PPP process, billing, etc. from the collected packet, time required for response, success of the call, failure code in case of failure, or movement between messages. Extract information about time, etc. The first packet analyzer transmits the information extracted from the collected packets to the controller 230.

Meanwhile, the first packet analyzer 214 transmits the information on the subscriber number, start time, and IP address extracted from the packet to the second analyzer 220.

The second analyzer 220 collects a packet transmitted from a PDSN of a mobile communication network to an external content server, and a second packet analyzer analyzing the packets collected by the second packet collector. The packet analyzer 224 is configured. The second analyzer having such a configuration collects the packet in which the tunneled packet in which the subscriber information is deleted is converted to TCP / IP. In order to interconnect the collected packets with the information of the first analyzer, the second analyzer receives a subscriber number, an IP address assigned to the subscriber, and a start time from the first analyzer, It is managed by correlation.

The second analyzer analyzes the TCP packet data based on the subscriber IP address to extract content information used by the subscriber. Accordingly, the second packet analyzer 224 of the second analyzer extracts information on the access start time, response time, and access success of the content server from the TCP packet data, and also requests a URL for knowing the content used by the subscriber. Information such as time, server response time, response code, and content data amount is extracted. The second packet analyzer 224 transmits the extracted information to the controller 230.

On the other hand, packets transmitted and received between the PDSN and the content server are distinguished by the IP address assigned by the terminal, not by the subscriber number. Accordingly, the second packet analyzer 224 receives the subscriber number and the IP address from the first packet analyzer and generates subscriber log information based on the subscriber number using the received information.

The controller 230 records and stores the information received from the first analyzer 210 and the second analyzer 220 in the database 240 using the subscriber number as a key. When the controller 230 receives information on an event occurring from the subscriber station from the first analyzer and the second analyzer, the number of attempts, successes, and responses for each base station, service network server, and content server is based on the received information. Surveillance information such as time, throughput, etc. is generated and stored and managed in the database 240.

In addition, the database 240 stores and manages all signaling sessions, TCP sessions, and HTTP sessions for all subscribers, and the controller 230 relates to a terminal base station, a service server, and a content server based on information stored in the database. It generates various statistics such as access time, success rate, throughput, and message travel time to measure performance and quality.

The information stored and managed in the database is log information for each subscriber, and specific examples thereof include (1) types of signaling messages according to call flows such as Radio-Packet session, authentication, PPP, and billing, and (2) signaling messages. Start time, response time, success or failure, failure code in case of failure, (3) key parameters per message such as subscriber number, assigned IP address, base station information, service options, (4) TCP session request time for content information, TCP connection response time, connection success, payload amount, HTTP URL request time, server response time, response code, URL, content amount, throughput, HTTP main parameters, etc.

Hereinafter, detailed operations of the first analyzer and the second analyzer according to the present invention will be described in detail with reference to FIGS. 3 and 4. 3 is a flowchart illustrating a process in which a first analyzer collects a packet and processes the collected packet.

First, when an A11 request (S300) and a response event occurs between the PCF and the PDSN (S306), the first analyzer collects an A11 request packet to generate subscriber information (eg, a subscriber number) (S302). Information on the event is notified to the controller (S304, S308).

Next, the connection procedure of LCP and IPCP is performed in the interval between the terminal and the PDSN (S310 and S314). The first analyzer collects the corresponding packet and notifies the controller of information about each event (S312 and S316). The information on the start time of the call, the subscriber number, and the start of the IP address is transmitted to the second analyzer (S320).

Next, when an event in which packet data is transmitted and received in the interval between the terminal and the PDSN occurs (S330), the first analyzer collects the transmitted / received packets, and then performs an initial TCP session analysis and an initial HTTP session analysis (S332). In operation S334, information about the corresponding event is transmitted to the controller.

Next, when the event of the end of the LCP occurs in the interval between the terminal and the PDSN (S336), the first analyzer transmits information about the event to the controller (S338).

Next, when an A11 termination request and response event occurs between the PCF and the PDSN (S340), the first analyzer transmits information on the corresponding event to the controller (S342), and ends the call start time, subscriber number, and IP address. The information about is transmitted to the second analyzer (S350) and the subscriber information is deleted (S360).

Hereinafter, the operation of the second analyzer according to the present invention will be described in detail with reference to FIG. 4.

First, when an event of the authentication request (S400) and the authentication response (S406) occurs between the PDSN and the AAA server, the second analyzer generates subscriber information from the authentication request packet (S402), and sends information on the event to the controller. It transmits (S404, S408). Next, the second analyzer receives information on the start time of the call, the subscriber number, and the start of the IP address from the first analyzer (S410).

Next, when an event of the DNS request and response occurs between the PDSN and the content server (S420), the second analyzer transmits information about the event to the controller (S422).

Next, when an event of the TCP connection occurs between the PDSN and the content server (S430), the second analyzer transmits information about the event to the controller (S432).

Next, when an event of the URL request and response occurs between the PDSN and the content server (S440), the second analyzer transmits information about the event to the controller (S442).

Next, when an event of TCP termination occurs between the PDSN and the content server (S450), the second analyzer transmits information about the event to the controller (S452).

Next, when an event of a charging request and response occurs between the PDSN and the AAA server (S460), the second analyzer transmits information about the event to the controller (S462), and the call start time, subscriber number, The IP address end information is received (S470), and the subscriber information is deleted (S480).

Meanwhile, the call analysis system according to the present invention described above may be applied not only to CDMA2000 but also to General Packet Radio Service (GPRS) and Universal Mobile Telecommunications System (UMTS). When the call analysis system according to the present invention is applied to GPRS, the first analyzer includes a Serving GPRS Support Node (hereinafter referred to as 'SGSN') and a Gateway GPRS Support Node (hereinafter referred to as 'GGSN'). Packet data is collected from the Gn interface, and the second analyzer collects the packet data from the Gi interface between the GGSN and the IP network. The first analyzer of the GPRS analyzes the collected packet of the GPRS Tunneling Protocol User Plane (GTP-U) and the GTP Control Plane (GTP-C), and reads the subscriber information and the IP address information. The first analyzer transmits subscriber information and IP address to the second analyzer, and the second analyzer collects information on the corresponding packet by using the information received from the first analyzer and transmits it to the controller. The controller stores and manages packet information received from the first and second analyzers for each subscriber number.

Although the present invention has been described above with reference to preferred embodiments thereof, this is merely an example and is not intended to limit the present invention, and those skilled in the art do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications which are not illustrated above in the scope are possible. For example, in an embodiment of the present invention, components such as the type of subscriber log information stored and managed in the database, the type of data transmitted from the first analyzer to the second analyzer, and the like may improve the efficiency of the system according to the present invention. In order to be able to carry out various modifications. And differences related to such modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

According to the present invention, it is possible to analyze the packet data transmitted and received in the mobile communication network, it is possible to generate subscriber information for all subscribers of the mobile communication network through the packet data analysis. Such subscriber information generation is generated based on the subscriber number for all subscribers, and based on the information, indicators for measuring the performance and quality of mobile terminals, base stations, service networks, and content servers; Statistics can be generated.

According to the present invention, the performance and quality of each node and each server of the mobile communication network are measured using the generated data, so that the overall performance or quality of the mobile communication network can be measured using more reliable data.

In addition, the controller of the system according to the present invention may provide information on the subscriber log to the outside in addition to the management of the first and second analyzers, the reception of the subscriber log, and the database management. Information that can be provided to the outside according to the present invention includes information such as the subscriber's packet data usage and the subscriber's packet data reception, such as a billing system.

In addition, according to the present invention, it is possible to provide a subscriber call state to call processing equipment.

In addition, according to the present invention, at the request of the customer center, it is possible to provide the subscriber's failure or the tendency of the subscriber's packet data, etc., it is also possible to directly notify the customer by using a short message service system.

In addition, according to the present invention, it is possible to notify the customer of the usage history associated with the intelligent network and the like to a specific customer such as a prepaid subscriber.

Claims (9)

In a call analysis system in a mobile communication network comprising a first data transmission and reception server, a second data transmission and reception server, a content server, etc., A first analyzer for collecting a packet input to the second data transmission and reception server and extracting subscriber log information from the collected packet; A second analyzer for collecting packets output from the second data transmission and reception server and extracting subscriber log information from the collected packets; A controller for integrating subscriber log information extracted from the first analyzer and the second analyzer, managing the subscriber log information through a subscriber number, and generating statistical analysis information according to a predetermined format; And A database for storing subscriber log information integrated by the controller; The first analyzer may include at least one of a start time, an IP address, and a subscriber number of a signal message among subscriber log information extracted from a packet transmitted from the first data transmission / reception server to a second data transmission / reception server. 2, the second analyzer analyzes the packet using the information provided from the first analyzer and transmits the packet to the controller, and the controller stores and manages log information of all subscribers accessing the network. Call management system in a mobile communication network, characterized in that to manage all the log information via the subscriber number. The method of claim 1, wherein the first analyzer, A first packet collector configured to collect a packet input to a second data transmission / reception server; A first packet analyzer for analyzing subscriber log information using the packet received from the first packet collector and transmitting the analyzed information to the second analyzer or the controller. Call analysis system in a mobile communication network comprising a. The method of claim 1, wherein the second analyzer, A second packet collecting unit which collects packets output from a second data transmitting and receiving server; A second packet analyzer configured to analyze subscriber log information by using the information transmitted from the first analyzer and the packet received from the second packet collector, and transmit the analyzed information to the controller; Call analysis system in a mobile communication network comprising a. delete delete The method according to any one of claims 1 to 3, And the controller stores and manages subscriber log information for each event using the subscriber number as a key when each event occurs. In a call analysis system in a mobile communication network, A first analyzer for collecting a packet input to a specific node of the mobile communication network and extracting subscriber log information from the collected packet; A second analyzer that collects packets output from the specific node, receives subscriber number and IP address from the first analyzer, and extracts subscriber log information from the collected packets by using the information received from the first analyzer ; A controller for integrating and managing subscriber log information extracted from the first analyzer and the second analyzer for each subscriber number and generating statistical analysis information according to a predetermined format; And A database for storing subscriber log information integrated by the controller; And storing and managing log information of all subscribers accessing the network, and providing network performance analysis data using the log information. 8. The method of claim 7, wherein the mobile communication network is applied to a general packet radio service (GPRS), and the first analyzer collects packets between a serving GPRS support node (SGSN) and a gateway GPRS support node (GGSN), and a second The analyzer collects packets between the GGSN and the IP network. The method according to any one of claims 1 to 3, wherein the first data transmission / reception server is a packet control function (PCF) server, and the second data transmission / reception server is a packet data serving node. Serving Node: 'PDSN') Call analysis system in a mobile communication network, characterized in that.

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