KR100285723B1 - Apparatus and method for testing data path in interworking function system - Google Patents

Abstract

An apparatus and method for testing a data path of a packet data service apparatus are disclosed. The method comprises the steps of: connecting a packet call generator to a packet data service device and a terminal, providing a packet data service to the packet data service device and the terminal, IP address). When the packet call generator sets up a call to test the packet data service, the point-to-point protocol client of the packet call generator contacts the point-to-point protocol server of the packet data service device. When the packet call generator transmits an Internet Protocol packet for testing to the packet data service apparatus, the packet data service apparatus transmits the received Internet protocol packet to the terminal. When the terminal receives the Internet Protocol packet and transmits a response packet to the packet data service apparatus, the packet data service apparatus transmits the received response packet to the packet call generator. The packet call generator receives the response packet, calculates and outputs the packet loss rate and average delay value of the response packet.

Description

[0001] APPARATUS AND METHOD FOR TESTING DATA PATH IN INTERWORKING FUNCTION SYSTEM [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for testing a data path of a packet data service apparatus, and more particularly, to a packet data service apparatus (IWF) providing a radio packet data service to a mobile subscriber, To an apparatus and method for testing a packet data service function of a packet data service.

FIG. 1 illustrates a network configuration diagram for providing a packet data service to a mobile subscriber in a system using a Code Division Multiple Access (CDMA) technique. As shown in the figure, a subscriber connects to a mobile telephone (MT) 120 using a terminal 110 (TE) 110 such as a personal computer (PC) or a notebook- And receives a packet data service such as the Internet.

The mobile phone 120 is connected to a base station / base station controller (BTS / BSC) 130 via an air interface, and the base station / To a Mobile Switching Center (MSC) The mobile switching center connects the wireless network (base station / base station controller) to the Public Switched Telephone Network (PSTN).

The packet data service apparatus (IWF) 150 connects the wireless network to a packet data network such as the Internet. The packet data service apparatus is connected to the base station controller 130 or the mobile switching center 140 using an L-interface. A subscriber connected to the wireless network is provided with a wireless packet data service such as Internet service through the packet data service device 150. [

In the packet data service system configured as described above, in order to check whether the tester has the packet data service device 150 operating properly, the tester must connect the terminal to the wireless network and generate a call to access the Internet. However, the conventional testing method as described above has a problem in that it is not suitable for testing various channels for providing packet data services. That is, in order to test various channels, a plurality of terminals and a mobile phone are required, and a mobile switching center or a base station controller that provides packet data services is needed. Therefore, there is a problem in that a lot of resources are required in testing a packet data service apparatus.

Disclosure of Invention Technical Problem The present invention has been made to solve the problems of the related art that operates as described above, and it is an object of the present invention to provide a method and apparatus for testing a function of a packet data service apparatus without using a plurality of terminals, It is an object of the present invention to provide an apparatus and method for testing a data path of an apparatus.

It is another object to provide an apparatus and method for testing a data path of a packet data service apparatus using a packet call generator that generates a call and generates internet protocol packet traffic.

It is another object to provide an apparatus and method for testing a data path of a packet data service apparatus supporting a point-to-point protocol connection in order to test multiple channels providing packet data services.

It is yet another object of the present invention to provide a data path test apparatus and method of a packet data service apparatus that supports routing of a data path under a test environment in order to test multiple channels providing packet data services.

Other objects and advantages of the present invention will become apparent from the following detailed description of the invention when read with reference to the accompanying drawings.

1 is a network configuration diagram for providing a packet data service to a mobile subscriber;

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a packet data service apparatus,

3 is a flow chart illustrating an embodiment of a data path test method according to the present invention.

4 is a block diagram showing a first embodiment of a routing method according to the present invention;

5 is a block diagram showing a second embodiment of a routing method according to the present invention;

Description of the Related Art

110, 400: terminal 120: mobile phone

130: base station / base station controller 140: mobile switching center

150, 300: Packet data service apparatus (IWF) 200: Packet call generator

210, 220, 230: Point-to-point protocol client

240,340 Internet Protocol Portion 250,260,270 Ping Packet Generation Portion

280,350: Call flow control module 290: Trunk line

310,320,330: Point-to-point protocol server 360: Ethernet

500: Hub

According to an aspect of the present invention, there is provided a packet data service system for providing a packet data service to a mobile phone, the packet data service system comprising:

A packet call generator for generating and delivering internet protocol packets and receiving response packets;

A packet data service apparatus for connecting the packet call generator and the terminal; And

And a terminal that receives the Internet Protocol packet through the packet data service apparatus and sends a response packet.

In an exemplary embodiment of the present invention, the packet call generator, the packet data service apparatus, and the terminal may be respectively assigned Internet Protocol addresses,

Preferably, the packet call generator and the packet data service apparatus are connected by a trunk line,

In the data path test apparatus, it is preferable that the packet data service apparatus and the terminal are connected by a local area network,

Preferably, the packet data service apparatus includes an Ethernet portion for connection with a terminal,

Preferably, the packet call generator calculates and outputs a packet loss rate and an average delay value of the received packet,

Wherein the packet call generator comprises: a call flow control module for performing call setup with the packet data service device;

A packet generation part for generating an internet protocol packet when a call is established;

An Internet Protocol portion for routing the delivery path of an Internet Protocol packet; And

Point protocol client channel portion that connects the packet call generator and the packet data service device over a path determined by the Internet Protocol portion,

The packet data service apparatus includes a call flow control module for performing call setup with a packet call generator;

A point-to-point protocol client channel portion coupled to the packet data service device; And

Point protocol client channel portion and an Internet Protocol portion for routing the path between the terminal and the terminal.

A preferred embodiment of the data path test apparatus of the packet data service apparatus according to the present invention is a packet data service system for providing a packet data service to a mobile telephone,

Connecting a packet call generator to a packet data service device and a terminal;

Assigning an internet protocol address (IP address) to the packet call generator, the packet data service device and the terminal;

Establishing a call for the packet call generator to test packet data service;

A point-to-point protocol client of a packet call generator for a set call accessing a point-to-point protocol server of a packet data service device;

The packet call generator sending an Internet Protocol packet for testing to the packet data service device;

The packet data service apparatus transmitting the received Internet Protocol packet to the terminal;

The terminal receiving the internet protocol packet and transmitting the response packet to the packet data service apparatus;

The packet data service apparatus transmitting the received response packet to the packet call generator; And

And the packet call generator receiving the response packet.

The data path test method may further include calculating and outputting a packet loss rate and an average delay value of a response packet received by the packet call generator,

The step of connecting the packet call generator with the packet data service apparatus and the terminal may be performed by connecting a packet call generator and a packet data service apparatus using a trunk line,

Preferably, the step of connecting the packet call generator with the packet data service apparatus and the terminal connects the packet data service apparatus and the terminal using a local area network,

The point-to-point protocol client of the packet call generator for the established call and the point-to-point protocol server of the packet data service device are connected to each other by the Internet protocol part of the packet call generator by referring to the first routing information table, And sending a packet to the corresponding channel,

The first routing information table preferably includes an Internet Protocol address of a point-to-point protocol client channel corresponding to a destination Internet Protocol address and a number of a point-to-point protocol client channel.

The point-to-point protocol client of the packet call generator for the established call and the point-to-point protocol server of the packet data service apparatus connect to the point-to-point protocol client by referring to the second routing information table, And transmitting the packet to the base station,

The second routing information table preferably stores a point-to-point protocol channel number corresponding to a point-to-point protocol client address,

Preferably, the terminal receives an internet protocol packet and transmits a response packet to the packet data service apparatus, wherein the terminal refers to the third routing information table and transmits a response packet to the packet data service apparatus,

The third routing information table preferably stores an address of an Ethernet portion of a packet data service apparatus corresponding to an address of a subnetwork including Internet Protocol addresses of a point-to-point protocol client.

Another preferred embodiment of the data path test method of the packet data service apparatus according to the present invention is a packet data service system for providing a packet data service to a mobile phone,

The packet call generator sending an Internet Protocol packet for testing to the packet data service device;

The packet data service apparatus transmitting the received Internet Protocol packet to the terminal;

The terminal receiving the internet protocol packet and transmitting the response packet to the packet data service apparatus;

The packet data service apparatus transmitting the received response packet to the packet call generator; And

And the packet call generator receiving the response packet.

In another embodiment of the present invention, the data path test method may further include calculating and outputting a packet loss rate and an average delay value of a response packet received by the packet call generator.

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 tests the function of a packet data service apparatus using a packet call generator that generates and provides a packet call. 2 is a configuration diagram of a data path test apparatus of a packet data service apparatus according to the present invention. As shown in the figure, a packet call generator 200 for providing a test environment, a packet data service apparatus 300 to be tested, and a terminal 400 for connecting a tester to a packet data service apparatus are provided. The terminal is connected to a packet data service apparatus through a local area network (LAN) using a hub 500. The packet call generator, the packet data service apparatus, and the terminal are each assigned an arbitrary Internet Protocol address (IP address).

The packet call generator 200 includes a Point-to-Point Protocol Client (PPP Client) 210, 220 and 230, an Internet Protocol portion 240, a Ping Test A packet generation part 250 and a call flow control module 280 and is connected to a packet data service device through a trunk line (for example, E1 cable) The packet call generator establishes a call, connects to the packet data service device in a point-to-point protocol, and then generates Internet Protocol Packet Traffic for the 'ping' test. The terminal is subject to 'ping' in the 'ping' test performed by the packet call generator.

You can use the 'ping' command to see which other systems are currently running. The 'ping' command has an option to tell the speed of the link so it can be used as information about the load on the network. The result of the 'ping' command indicates the time taken for the test packet to travel to and from the desired system, and may also indicate the highest, lowest speed of the link, and packet loss due to network congestion. Therefore, the packet call generator 210 can use the 'Ping' command to know the time it takes for the test packet to travel to and from the terminal 400 via the packet data service device 300.

The packet data service apparatus 300 includes a point-to-point protocol server (PPP server) 310 (320) 330, an Internet protocol part 340, a call flow control module 350, And an Ethernet (Ethernet) part 360 for connecting the packet call generator to the terminal.

3 is a flowchart illustrating an embodiment of a data path test method according to the present invention. The operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In step s110, the packet call generator 200 is connected to the packet data service device 300 and the terminal 400, as shown in Fig. 2 for testing the data path. In step s120, (IP address) unique to the call generator, the packet data service device, and the terminal.

In step s130, a call is established between the packet call generator 200 and the packet data service device 300 when the packet call generator 200 generates the number of test calls specified by the tester. The packet call generator then drives the point-to-point protocol clients 210, 220 and 230 for each call to connect to the point-to-point protocol servers 310, 320 and 330 of the packet data service equipment. At step s140, if a point-to-point protocol connection between the client and the server is established, the packet call generator performs a 'ping' test for each call. The packet call generator performs a 'ping' test on the terminal 400 according to a time interval between a predetermined number of 'pings' and 'ping', a 'ping' packet length, and a timeout value. When the 'ping' is completed, the packet call generator calculates the result, ie, 'ping' packet loss rate and average delay value, and notifies the tester. In order to perform the 'ping' test as described above, the packet call generator performs routing for Internet protocol packets.

First, a routing process for sending an Internet protocol packet for 'ping' test performed in the packet call generator, i.e., an echo request packet transmission, will be described.

In steps s150 and s160, the packet call generator transmits the generated internet protocol packet to the terminal through the packet data service apparatus, and the two steps will be described in detail. The packet generation part 250 (260) 270 of the packet call generator generates a 'ping' echo request packet and transmits it through the socket to the Internet protocol part 240. The Internet Protocol part refers to the routing information and sends the packet to the point-to-point protocol clients 210, 220 and 230 corresponding to the destination IP address. The point-to-point protocol client connects to the point-to-point protocol server 310 (320) 330 via a data link and delivers the Internet protocol packet to the point-to-point protocol server. This packet is transmitted to the terminal 400 through the Ethernet part 360 of the packet data service apparatus 300.

At this time, a 'ping' packet must be transmitted over the point-to-point protocol channel assigned for each call. Thus, the Internet Protocol portion 240 should determine which point-to-point protocol client channel to send the packet with reference to the destination Internet Protocol address. The conventional internet protocol part refers to the routing table storing the routing information for the 'ping' destination to determine the path for transmitting the packet. Table 1 shows an example of the routing table that the Internet protocol part has.

destination Gateway Channel number xxxx yyyy a

Where xxxx is the destination of the ping, i.e., the internet protocol address of the terminal, yyyy is the internet protocol address of the point-to-point client channel 1, a is the network interface (NI) number of the point- to be. When the Internet Protocol part 240 has a routing table configured as shown in Table 1, the Internet Protocol part unconditionally transmits the packet to be transmitted to the terminal through the first channel 210. 4 is a block diagram showing a first embodiment of a routing method according to the present invention. As shown, all packet generating portions 250,260 and 270 deliver a 'ping' packet over channel one 210. As a result, only one call (channel 1) will receive the echo reply packet.

In order to test all the data paths (channels), it is necessary to allocate Internet protocol packets assigned to channel 1 to different channels. Therefore, in the second embodiment of the routing method according to the present invention, a second routing table, i.e., a mapping table, which links a source IP address and a point-to-point protocol channel number (PPP channel number) use. Table 2 shows an example of a mapping table according to the present invention.

Source IP address PPP channel number PPP client address 1 One PPP client address 2 2 ... ... PPP client address N N

The point-to-point protocol client part of the packet call generator re-routes the 'ping' packet by the Internet protocol using the mapping table constructed as shown in Table 2. The 'ping' packet is assigned an internet protocol address for each channel of the point-to-point protocol client when the point-to-point protocol is accessed. Therefore, the information is set in the mapping table, and when the point-to-point protocol connection is disconnected, the information is cleared.

When the point-to-point protocol client section receives a request for transmission of an Internet Protocol packet, the point-to-point protocol client section analyzes the source Internet protocol address recorded in the header of the Internet Protocol packet with reference to the mapping table. And redistributes the packet to the channel corresponding to the analyzed address. 5 is a block diagram showing a second embodiment of a routing method according to the present invention. As shown, channel 1 210 of the point-to-point protocol client redistributes Internet protocol packets delivered from each packet generation portion 250 (260) 270 to other channels. Therefore, it is possible to transmit and receive packets through different channels.

Next, a process of receiving an Internet Protocol packet transmitted in response to a 'ping' test packet, i.e., a process for receiving an Echo Reply Packet (Echo Reply Packet Receive) will be described.

In step s170, the terminal generates a response packet for the received Internet protocol packet and transmits the response packet to the packet data service apparatus, which will be described in detail. In order for the terminal 400 to send an echo reply packet to the packet call generator 200, the terminal stores the routing information configured as shown in Table 3.

destination Gateway xxx0 yyyy

Where xxx0 is the address of the subnetwork that contains the Internet Protocol addresses of the point-to-point protocol clients 210,220 and 230 and yyyy is the Internet Protocol address of the local network 360 of the packet data service device 300 LAN IP address). The echo reply packet from the terminal 400 is delivered to the Ethernet portion 360 of the packet data service device according to the routing information as described above.

In step s180, the packet data service device forwards the received response packet to the packet call generator, where the Internet protocol portion of the packet data service device sends the response packet forwarded to the Ethernet portion to the point-to-point protocol server 310 (320) (330), the point-to-point protocol server delivers the response packet to the point-to-point protocol client over the 1: 1 link. In step s190, the packet call generator analyzes the packet transmitted through the point-to-point protocol client and outputs the analysis result. The tester determines the operation status of the packet data service apparatus through the analysis result output from the packet call generator, that is, the 'ping' packet loss rate and the average delay value.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which come within the scope of the appended claims, and all such modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. .

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

A method of testing a function of a packet data service apparatus for providing a packet data service over a wireless network, the method comprising: using a packet call generator for generating and delivering an Internet protocol packet, Lt; RTI ID = 0.0 > service. ≪ / RTI >

As a result, it is possible to transmit and receive internet protocol packets of the packet data service apparatus, thereby testing the Internet matching function of the packet data service apparatus by itself.

Claims (18)

A packet data service system for providing a packet data service to a mobile telephone, A packet call generator for generating and delivering internet protocol packets and receiving response packets; A packet data service apparatus for connecting the packet call generator and the terminal; And And a terminal for receiving Internet protocol packets and sending response packets via the packet data service device. The apparatus of claim 1, wherein the packet call generator, the packet data service apparatus, and the terminal are each assigned an internet protocol address. The apparatus of claim 1, wherein the packet call generator and the packet data service apparatus are connected to each other through a trunk line. The apparatus of claim 1, wherein the packet data service apparatus and the terminal are connected by a local area network (LAN). 5. The apparatus of claim 4, wherein the packet data service device comprises an Ethernet portion for connection to a terminal. The apparatus of claim 1, wherein the packet call generator calculates and outputs a packet loss rate and an average delay value of a response packet. The method of claim 1, wherein the packet call generator comprises: A call flow control module for performing call setup with the packet data service device; A packet generation part for generating an internet protocol packet when a call is established; An Internet Protocol portion for routing the delivery path of an Internet Protocol packet; And Point protocol client channel portion connecting a packet call generator and a packet data service device over a path determined by the Internet Protocol portion. The packet data service apparatus according to claim 1, A call flow control module for performing call setup with a packet call generator; A point-to-point protocol client channel portion coupled to the packet data service device, and Point protocol client channel portion and an Internet Protocol portion for routing the path between the point-to-point protocol client channel portion and the terminal. A packet data service system for providing a packet data service to a mobile telephone, Connecting a packet call generator to a packet data service device and a terminal; Assigning an internet protocol address (IP address) to the packet call generator, the packet data service device and the terminal; Establishing a call for the packet call generator to test packet data service; A point-to-point protocol client of a packet call generator for a set call accessing a point-to-point protocol server of a packet data service device; The packet call generator sending an Internet Protocol packet for testing to the packet data service device; The packet data service apparatus transmitting the received Internet Protocol packet to the terminal; The terminal receiving the internet protocol packet and transmitting the response packet to the packet data service apparatus; The packet data service apparatus transmitting the received response packet to the packet call generator; And A method for testing a data path of a packet data service device, the method comprising: receiving a response packet from a packet call generator. 10. The method of claim 9, wherein the data path test method further comprises calculating and outputting a packet loss rate and an average delay value of a response packet received by the packet call generator. 10. The method of claim 9, wherein the step of connecting the packet call generator with the packet data service device and the terminal connects the packet call generator and the packet data service device using a trunk line. 10. The method of claim 9, wherein the step of connecting the packet call generator with the packet data service apparatus and the terminal connects the packet data service apparatus and the terminal using a local area network. 10. The method of claim 9, wherein the point-to-point protocol client of the packet call generator for the established call and the point-to- Wherein the Internet Protocol portion of the packet call generator includes sending a packet to a corresponding channel of a point-to-point protocol client with reference to a first routing information table. 14. The method of claim 13, wherein the first routing information table comprises a data path test of a packet data service device, the packet data service device comprising a number of Internet Protocol addresses and a point-to-point protocol client channel of a point- Way. 10. The method of claim 9, wherein the point-to-point protocol client of the packet call generator for the established call and the point-to- The Internet Protocol part of the packet call generator sending a packet to the corresponding channel of the point-to-point protocol client with reference to the first routing information table, Wherein the point-to-point protocol client refers to the second routing information table and sends the packet to the corresponding channel of the point-to-point protocol server. 16. The method of claim 15, wherein the second routing information table stores a point-to-point protocol channel number corresponding to a point-to-point protocol client address. 10. The method of claim 9, wherein the terminal receives an Internet Protocol packet and transmits a response packet to the packet data service apparatus, Wherein the terminal refers to the third routing information table and transmits a response packet to the packet data service apparatus. 18. The method of claim 17, wherein the third routing information table stores an address of an Ethernet portion of a packet data service apparatus corresponding to an address of a subnetwork including Internet Protocol addresses of a point-to- ≪ / RTI >