KR100428718B1 - System for signal message comparing of software conformance test for new generation mobile terminal and method thereof - Google Patents

Abstract

The present invention relates to a signal message comparison system and method in a software conformance test for a mobile terminal of the IMT-2000 asynchronous method. The present invention provides a message receiving unit for receiving a layer 3 signal message, a message management unit for creating a comparison signal message, a message determining unit for reading a comparison signal message and a layer 3 signal message and comparing them to determine a normal / abnormal state of a message exchange procedure. It includes a message decoding unit for decoding the layer 3 signal message and the comparison signal message, and a message information element comparison unit for determining whether an error occurs by comparing the two signal messages decoded in the message decoding unit by information element units. Accordingly, the present invention can simply determine whether the message exchange is progressing smoothly by comparing only the lower layer signal message with the comparison signal message written by the user, and decodes the message only when an error occurs in the message to identify the wrong information element. By extracting and allowing the user to confirm it, it is possible to cope with all errors and to reduce the burden on message comparison or decryption process regardless of the amount of information elements.

Description

IMT-2000 System for signal message comparing of software conformance test for new generation mobile terminal and method

The present invention relates to a signal message comparison system and method in the software conformance test for an IMT-2000 asynchronous mobile terminal applied during the layer 3 protocol conformance test, and more particularly, to the layer 3 signal message during the layer 3 protocol conformance test. The present invention relates to a signal message comparison system and method in a software conformance test for an IMT-2000 asynchronous mobile terminal, which compares only signaling messages of a lower layer to determine whether the exchange procedure is smoothly performed.

The IMT-2000 asynchronous mobile terminal is a third-generation mobile terminal that uses a very complex protocol to perform high-speed data services, video services, and global roaming.

Therefore, when software for an asynchronous mobile terminal is developed, it is necessary to confirm whether the software operates normally in order to actually use the software. In addition, since asynchronous mobile terminals can use software developed by various companies, it is necessary to evaluate software suitability in terms of software compatibility.

Therefore, the company developing the asynchronous mobile terminal software should not only check whether the software developed by the mobile terminal operates normally, but also evaluate whether the software satisfies the proposed standard. In this case, the protocol conformance tester is a device necessary for evaluating whether the software is operating properly or not.

For example, Layer 3 of the third generation mobile communication system of the IMT-2000 asynchronous method includes radio resource control (RRC), a lower layer, mobility management (MM), and a call / connection control (CC), an upper layer. Has a hierarchy.

This layer 3 protocol conformance tester not only confirms that the asynchronous mobile terminal operates normally in the layer 3 aspect, but also confirms that it operates in accordance with standard specifications. Here, the layer 3 protocol conformance tester uses the layer 3 evaluation scenario proposed by the standardization organization to evaluate the suitability of the software for the asynchronous mobile terminal.

At this time, the Layer 3 protocol conformance tester simulates Layer 3 of the asynchronous Node-B (base station) / RNC (Radio Network Controller) / MSC (Mobile Switching Center) system and the asynchronous mobile terminal. The exchange of signaling messages during the layer 3 protocol conformance test period determines whether the asynchronous mobile terminal is operating normally.

Therefore, the layer 3 protocol conformance tester should be able to determine that the exchange procedure of the layer 3 signaling message is smooth. To this end, the Layer 3 Protocol Conformance Tester shall ensure that Layer 3 signaling messages in the CC / MM / RRC layer are each exchanged smoothly.

Among the layer 3 messages, the exchange of CC messages should be confirmed by extracting the CC message from the RRC message, and the exchange of MM messages should be confirmed by extracting the MM message from the RRC message, but the exchange of RRC messages can be confirmed immediately. Do.

As suggested above, determining whether to exchange the layer 3 signaling message of the CC / MM / RRC layer has a problem in that it is inconvenient to go through a message extraction procedure in the case of the CC message and the MM message.

The method of determining whether to exchange a layer 3 signaling message can be largely classified into three methods.

First, a method of determining whether the first layer 3 signaling message is exchanged is to check whether all the information elements of the message received by the layer 3 protocol conformance tester are matched with the information elements to be received.

However, the above method is not a big problem when the amount of information elements in the message is small, but when the amount of information elements is large, such as a layer 3 signaling message used in the third generation mobile communication system of IMT-2000 asynchronous method. There is a problem in that comparing all information elements causes a great burden because the number of information elements must be compared.

In addition, the above method has a problem in that the program source to be compared every time is changed when the value of the information element to be compared or the information element itself is changed.

In order to solve the above problems, the method of determining whether the second layer 3 signaling message is exchanged is to compare only message identifier information elements, not all information elements, unlike the first method.

Usually, the exchange procedure of a layer 3 signaling message transmits a layer 3 signaling message with a specific message identifier in response to the message identifier of the layer 3 signaling message received from the receiving end at the receiving end.

For example, if the mobile terminal sends a "RRC CONNECTION REQUEST" message to the Layer 3 Protocol Conformance Tester to establish an RRC connection, the Layer 3 Protocol Conformance Tester sends a "RRC Connection Setup" in response to the RRC connection request. (RRC CONNECTION SETUP) "message is sent to the mobile terminal.

The mobile terminal then establishes an RRC connection by sending a " RRC CONNECTION SETUP COMPLETE " message to the layer 3 protocol conformance tester in response to the RRC connection setup message.

Therefore, the second method determines that the exchange procedure is performed by confirming the message identifier of the layer 3 signaling message transmitted and received between the mobile terminal and the layer 3 protocol conformance tester.

However, in the above method, the test scenario of the layer 3 protocol conformance tester has a problem of not only confirming the exchange of layer 3 signaling messages but also identifying information elements of some messages.

Accordingly, the method of determining whether the third layer 3 protocol signal message is exchanged is to determine that the exchange procedure of the layer 3 signaling message is performed by checking only the specific information element to be checked in the test scenario together with the message identifier information element. .

Layer 3 signaling messages used in the IMT-2000 asynchronous wireless access section are compressed with Abstract Syntax Notation.1 (ASN.1) compression, unlike messages in synchronous or second generation mobile communication systems. Even in the case of confirmation, the compressed layer 3 signaling message must be decrypted each time.

If there is an error in the layer 3 signaling message, the process of decrypting the layer 3 signaling message is absolutely necessary. However, decoding a layer 3 signal message compressed by the ASN.1 compression method incurs a heavy burden on the CPU, and thus, if an error does not exist in the message, the layer 3 signal message may be unnecessarily decrypted. .

In addition, since the above method or the second method may also cause errors in other information elements of the received message, it is not possible to determine that the message is a message originally intended only by checking only a specific information element of the message.

The present invention has been made to solve the above problems, and an object of the present invention is to determine whether a message exchange procedure is normal or abnormal using only lower layer signaling messages among layer 3 signaling messages, and when an error occurs in the message. Signal message comparison system and method in software conformance test for IMT-2000 asynchronous mobile terminal that can cope with all errors by deciphering the message only and allow the user to confirm and reduce the burden on the message comparison or decryption process To provide.

1 is a diagram illustrating a layer 3 configuration of a third generation mobile communication system of a general IMT-2000 asynchronous method.

2 is a block diagram showing the configuration of a signal message comparison system in a software conformance test for an IMT-2000 asynchronous mobile terminal according to an embodiment of the present invention.

3 is a flowchart illustrating a signal message comparison method in a software conformance test for an IMT-2000 asynchronous mobile communication terminal according to an embodiment of the present invention.

A characteristic of the signal message comparison system in the software conformance test for the IMT-2000 asynchronous mobile terminal according to the present invention for realizing the above object is a layer 3 signal message transmitted by the IMT-2000 asynchronous mobile terminal. Message receiving unit for receiving; A message manager for generating a comparison signal message having the same representation as that of the layer 3 signal message by the user and comparing the same with the layer 3 signal message of the message receiver; A message determining unit which reads a comparison signal message stored in the message management unit and a layer 3 signal message of the message receiving unit, and compares whether the message is identical to each other to determine a normal / abnormal state of a message exchange procedure; A message decoding unit for decoding the layer 3 signal message and the comparison signal message according to a determination result of the message determining unit; And a message information element comparator for determining whether an error has occurred by comparing two signal messages decoded by the message decryption unit by information element units.

The message determining unit,

The normal / abnormal state of the message exchange procedure is determined using only the lower layer signal messages among the layer 3 signal messages.

The message manager includes a message database that stores the comparison signal message in a file form.

The present invention includes a screen output unit for outputting a result of comparing the message information element comparator so that the user can identify each information element and cope with an error when the information elements of the two signal messages are not identical.

On the other hand, the characteristics of the signal message comparison method in the software conformance test for the mobile terminal of the IMT-2000 asynchronous method according to the present invention, a) a layer consisting of a lower layer, a middle layer, and a higher layer of the IMT-2000 asynchronous mobile terminal Creating, by the user, a comparison signal message having the same representational form as the three signal message; b) receiving a layer 3 signaling message sent by the mobile terminal; And c) comparing the layer 3 signal message with the comparison signal message to determine a normal / abnormal state of the exchange procedure of the layer 3 signal message.

C),

Among the layer 3 signal messages, only the lower layer signal message is compared with the comparison signal message to determine a normal / abnormal state of the exchange procedure.

C),

A) reading the comparison signal message prepared in step b) and comparing the layer 3 signal message for equality; B) decrypting the layer 3 message and the comparison signaling message if the comparison result of step a) is not the same; And c) comparing the two messages decoded in the step c) in units of information elements to determine whether an error occurs.

In step c), whenever an error occurs in the process of comparing the two messages decrypted in step b), the corresponding information element is displayed on the screen.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a layer 3 configuration of a third generation mobile communication system of a general IMT-2000 asynchronous method.

As shown in FIG. 1, layer 3 includes a radio resource control (RRC) layer 11 as a lower layer, a mobility management (MM) layer 12 as an intermediate layer, and a call / connection control (CC) layer 13 as an upper layer. It consists of.

The dual RRC layer 11 is responsible for establishing a connection between the mobile station (MS) and the base station subsystem (BSS), and the MM layer 12 manages and maintains mobility information of the MS and connects the MS and the mobile switching center (MSC). Responsible for maintenance termination. Finally, the CC layer 13 is responsible for call setup and routing between the caller and the MS subscriber.

Of the above layer 3 signaling messages, the signaling messages of the CC layer 13 are transmitted through the MM layer 12 and the RRC layer 11, and the signaling messages of the MM layer 12 pass through the RRC layer 11. Transmitted, and the signaling message of the RRC layer 11 is transmitted immediately.

Therefore, the system according to the embodiment of the present invention does not compare the signal messages of each layer, but compares only the signal messages of the RRC layer 11, and the layer 3 signal message is smoothly performed on the wireless access section through the layer 3 software conformance tester. Can be exchanged.

2 is a block diagram showing the configuration of a signal message comparison system in a software conformance test for an IMT-2000 asynchronous mobile terminal according to an embodiment of the present invention.

As shown in FIG. 2, the system according to the embodiment of the present invention includes a message receiver 50 and a message receiver 50 that receive a layer 3 signal message transmitted by an IMT-2000 asynchronous mobile terminal. The comparison signal message created by the user and the comparison signal message created by the message manager 60 and the layer of the message receiver 50 in which a comparison signal message having the same representation form as the layer 3 signal message is compared to the layer 3 signal message. A message determining unit 70 that reads a three-signal message and compares two messages for equality to determine the normal / abnormal state of the message exchange procedure, and the message determining unit 70 determines that the two messages are not the same. 3 Signal message and comparison The message decryption unit 80, which decrypts the signal message, compares the two messages decrypted by the message decryption unit 80 by information element units. Whenever an error occurs in the message information component comparing unit 90, and a message information element comparison unit 90 to determine whether the occurrence and a display output unit 95 to output the display information element.

The message management unit 60 includes a message database (DB) 65 which stores the comparison signal message generated by the user in the form of a file, and the user generates the comparison signal message based on the information on the layer 3 signaling message. The comparison signal message is binary data compressed by the ASN.1 method.

This comparison signal message actually has the same form as the layer 3 signal message received from the mobile terminal on the wireless access interval.

The operation of the signal message comparison system in the IMT-2000 asynchronous mobile communication terminal software suitability test according to the embodiment of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a signal message comparison method in a software conformance test for an IMT-2000 asynchronous mobile communication terminal according to an embodiment of the present invention.

As shown in FIG. 3, the message manager 60 directly composes a comparison signal message of a binary form compressed by an ASN.1 method and stores it in the message DB 65 (S1). The message receiving unit 50 checks whether a layer 3 signaling message is received from the IMT-2000 asynchronous mobile communication terminal (S2), and if the layer 3 signaling message is not received, the message continues until the message is received. Check whether or not

When the layer 3 signal message is received, the message determination unit 70 reads the comparison signal message from the message DB 65, and then signals the RRC layer signal from the comparison signal message and the layer 3 signal message received from the message receiver 50. Compare the messages one byte each (S3).

At this time, when the message determining unit 70 determines that the message exchange procedure is proceeding smoothly, the system assumes that the user knows in advance which RRC layer 3 signaling message the user wants to compare, and all RRC layer 3 signaling messages. For example, a comparison signal message is created through the message manager 60 and stored in the message DB 65.

The comparison signal message registered in the message DB 65 and the signal message of the RRC layer received by the message receiver 50 are simply compared without decrypting the layer 3 signal message received by the message receiver 50.

When it is determined that the comparison result of the signal message of the RRC layer and the comparison signal message is the same, the message determining unit 70 confirms whether the comparison procedure for all data of the signal message of the RRC layer is completed. (S4, S5 )

The message determining unit 70 determines that the message exchange procedure is proceeding smoothly when all data comparison procedures for the signaling message of the RRC layer are completed, and terminates all comparison procedures for the signaling message of the RRC layer.

However, if the comparison procedure of all data for the RRC layer signal message is not completed, the message determination unit 70 compares the signal message data of the remaining RRC layer with the comparison signal message (S6). To determine whether the same.

The message determining unit 70 determines that the message exchange procedure is not performed smoothly when the comparison result between the signal message of the RRC layer and the comparison signal message is not the same, and the message decoding unit 80 determines that the signal message of the RRC layer is not. And ASN.1 decryption process is performed for the comparison message.

The message information element comparator 90 compares the two messages decrypted by the message decryption unit 80 again in units of information elements (S8), and determines whether the information elements of the two messages are identical. (S9)

In this case, when the information elements of the two messages decrypted by the message decryption unit 80 are not the same, in order to cope with an error, the user outputs the information elements of the two messages through the screen output unit 95 so that the user can check. (S10)

When the information elements of the two messages decrypted by the message decryption unit 80 are the same, or when the user checks the error of the message through the screen output unit 95, the message information element comparator 90 is applied to all the information elements. It is checked whether the message comparison has been performed.

If the message comparison for all information elements is not performed, the message information element comparison unit 90 performs a message comparison for the remaining information elements (S12), and if the message comparison for all information elements is performed, the message The decryption unit 80 ends the signal message comparison procedure of the decrypted RRC layer.

The drawings and detailed description of the invention are merely exemplary of the invention, which are used for the purpose of illustrating the invention only and are not intended to limit the scope of the invention as defined in the appended claims or claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The signal message comparison system and method in the software conformance test for mobile terminal of IMT-2000 asynchronous method according to the present invention and the method can be easily compared to the comparison signal message created by the user among the layer 3 signal messages. The inconvenience of having to extract the messages of the middle layer and the upper layer can be solved by determining whether the process is progressing smoothly.

In addition, the present invention is capable of coping with all errors by deciphering the message and extracting the wrong information element and allowing the user to confirm the message only when the message exchange procedure is not progressing smoothly and an error occurs in the message. In many cases, it is possible to reduce the burden on the message comparison or decryption process.

In addition, the present invention has the effect of not having to modify the program source to be compared every time when changing the value of the information element of the message or changing the information element itself to be compared.

Claims (8)

A message receiver configured to receive a layer 3 signal message transmitted by an IMT-2000 asynchronous mobile terminal; A message manager for generating a comparison signal message having the same representation as that of the layer 3 signal message by the user and comparing the same with the layer 3 signal message of the message receiver; A message determining unit which reads a comparison signal message stored in the message management unit and a layer 3 signal message of the message receiving unit, and compares whether the message is identical to each other to determine a normal / abnormal state of a message exchange procedure; A message decoding unit for decoding the layer 3 signal message and the comparison signal message according to a determination result of the message determining unit; And Message information element comparison unit for determining whether an error has occurred by comparing the two signal messages decoded by the message decoding unit by the information element unit Signal message comparison system in the software conformance test for IMT-2000 asynchronous mobile terminal comprising a. The method of claim 1, The message determining unit, A signal message comparison system in the software conformance test for an IMT-2000 asynchronous mobile terminal, characterized in that the normal / abnormal state of the message exchange procedure is determined using only the lower layer signal messages among the layer 3 signal messages. The method of claim 1, The message management unit, A signal message comparison system in a software conformance test for an IMT-2000 asynchronous mobile terminal including a message database for storing the comparison signal message in a file form. According to claim 1, The signal message comparison system in the software conformance test for the IMT-2000 asynchronous mobile terminal, When the comparison result of the message information element comparison unit is not the same information element of the two signal message, IMT-2000 asynchronous movement including a screen output unit for outputting the user to check each information element to cope with the error Signaling message comparison system in software conformance test for terminal. a) a user preparing a comparison signal message having the same representation as a layer 3 signal message including a lower layer, a middle layer, and a higher layer of an IMT-2000 asynchronous mobile terminal; b) receiving a layer 3 signaling message sent by the mobile terminal; And c) comparing the layer 3 signaling message with the comparison signaling message to determine a normal / abnormal state of the exchanging procedure of the layer 3 signaling message; Signal message comparison method in the software conformance test for mobile terminals of the IMT-2000 asynchronous method comprising a. The method of claim 5, wherein C), Comparison of the signaling messages in the software conformance test for the IMT-2000 asynchronous mobile terminal, characterized in that the normal / abnormal state of the exchange procedure is determined by comparing only the lower layer signaling messages with the comparison signaling messages among the layer 3 signaling messages. Way. The method of claim 5, wherein C), A) reading the comparison signal message prepared in step b) and comparing the layer 3 signal message for equality; B) decrypting the layer 3 message and the comparison signaling message if the comparison result of step a) is not the same; And C) comparing the two messages decoded in the above step C by information element unit and checking whether an error has occurred. Signal message comparison method in the software conformance test for mobile terminals of the IMT-2000 asynchronous method comprising a. The method of claim 7, wherein The above step c), The method of comparing the signal message in the software conformance test for the IMT-2000 asynchronous mobile terminal, characterized in that the screen outputs the corresponding information element whenever an error occurs in comparing the two messages decrypted in step b).