JP5632931B2 - Test apparatus and test method - Google Patents

Description

  The present invention is intended for testing mobile communication terminals such as mobile phones and data communication terminals, for example, in order to test whether this mobile communication terminal can communicate normally, to communicate with the mobile communication terminal, The present invention relates to a test apparatus and a test method for displaying a log during communication.

  When a mobile communication terminal such as a mobile phone or a data communication terminal is newly developed, it is necessary to test whether or not the developed mobile communication terminal can communicate normally. For this reason, the mobile communication terminal test apparatus includes a pseudo base station that simulates the function of an actual base station. The mobile communication terminal to be tested is connected to the pseudo base station, and the test apparatus and the mobile communication terminal are connected to each other. Communication is performed, and log data of this communication is acquired on the test apparatus side and displayed as a log, and the tester performs a test to confirm the contents of the log.

  By the way, a communication protocol in mobile communication is generally hierarchized (layered), and processing is different in each layer. For this reason, also in the above-described test, it is required to display a communication log for each layer, and the test apparatus acquires a communication log for each layer.

  In order to improve the convenience of the tester in displaying the communication log, the log data acquired by the test apparatus is transferred to a personal computer (PC), and the log display application that operates on this PC is used to The configuration of displaying the log on the display screen has become mainstream. A test apparatus having these functions is disclosed in Patent Document 1, for example.

JP 2009-147640 A

  By the way, when these communication logs are acquired for each layer, the data amount of the log becomes many times the data amount of the actual communication. Furthermore, in order to test a handover operation of a mobile communication terminal, when a plurality of pseudo base stations are linked and logs acquired by these pseudo base stations are displayed collectively, the data amount of the log further increases. However, the log storage capacity of the test apparatus is limited, and the test apparatus needs to quickly transfer the log data acquired by the pseudo base station to the PC.

  On the other hand, as a communication method in mobile communication, a method of performing high-speed data communication such as LTE (Long Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access) has appeared. The difference with the wired data communication speed between PCs is getting smaller. For this reason, the conventional test apparatus cannot transfer the log data acquired by the pseudo base station to the PC, and a state occurs in which the log data acquired by the pseudo base station is discarded. As a result, the conventional test apparatus has a problem that a log is lost during display, the communication content cannot be confirmed by the tester, and a sufficient test cannot be performed.

  The present invention is a test that can reduce log omission caused by discarding log data without transferring it when transferring log data for communication and displaying the log at the transfer destination. An object is to provide an apparatus and a test method.

  The test apparatus according to claim 1 of the present invention is connected to a mobile communication terminal (11) that communicates based on a communication protocol having a plurality of layers in which data is transmitted, and log data of communication between the layers Is a test apparatus (1) that acquires the data and tests the mobile communication terminal, the log data generating means (31) for generating log data between layers, which is log data of communication between predetermined layers, and the predetermined Reduced log that generates reduced log data by reducing the amount of data by deleting data included in log data of communication between layers on the layer side where the data is output with reference to the layer between the layers in accordance with a predetermined rule A data generation means (31b) and the reduction log data generation means, provided that the inter-layer log data includes the reduction log data. Has a data restoring means for restoring the basis by dividing the data into the inter-layer log data (43), the arrangement having a.

  With this configuration, in the test apparatus according to claim 1 of the present invention, the reduced log data generating unit generates reduced log data in which the data amount is reduced by deleting data according to a predetermined rule, and the data restoring unit is reduced. Since the data deleted by the log data generation unit is restored based on the inter-layer log data, it is not necessary to discard the log data by sending the reduced log data with a reduced data amount to the transfer destination for restoration.

  Therefore, the test apparatus according to claim 1 of the present invention can reduce log loss caused by discarding log data without transferring it when transferring log data for communication and displaying the log at the transfer destination. it can.

  The test apparatus according to claim 2 of the present invention is characterized in that the communication protocol further includes an encryption layer that outputs log data of encrypted communication, and the reduction log data generation means is based on the encryption layer. The reduction log data is generated between predetermined layers on at least one of the layer side to which the data is input and the layer side to which the data is output.

  With this configuration, the test apparatus according to claim 2 of the present invention generates the reduction log data on the data input side or the data output side based on the encryption layer even when the communication protocol to be used includes the encryption layer. can do.

  A test apparatus according to claim 3 of the present invention is a test procedure for testing the mobile communication terminal, and includes encryption information indicating whether or not to encrypt communication log data between predetermined layers. A test scenario storage unit (24a) for storing a test scenario including the configuration, wherein the reduction log data generation unit selects between layers for generating the reduction log data based on the encryption information. doing.

  With this configuration, the test apparatus according to claim 3 of the present invention can select between layers that generate the reduction log data based on the encryption information included in the test scenario.

  In the test apparatus according to claim 4 of the present invention, the mobile communication terminal transmits and receives block data in which a block size for transmitting the data is determined according to a transmission path condition, and reduces the data amount. Further comprising a table storage unit (35a) for storing a reduction reference table in which rule information for the block size is associated with the block size, and the reduction log data generation unit generates the reduction log data based on the reduction reference table It has the composition which is to do.

  With this configuration, the test apparatus according to claim 4 of the present invention can generate the reduction log data according to the block size because the reduction log data generation unit generates the reduction log data based on the reduction reference table. it can.

  In the test method according to claim 5 of the present invention, a mobile communication terminal (11) that communicates based on a communication protocol having a plurality of layers in which data is transmitted is connected, and log data of communication between the layers A mobile communication terminal test method for testing the mobile communication terminal using a test apparatus (1) for acquiring a log data generation step for generating log data between layers, which is log data of communication between predetermined layers ( S13) and a reduction log in which the amount of data is reduced by deleting data included in log data of communication between layers on the layer side where the data is output with reference to the predetermined layer according to a predetermined rule Reduction log data generation step (S16, S32) for generating data, and the inter-layer log data is converted into the reduction log data. It has a data restoration step for restoring on the basis of the data deleted in the reduced log data generating step to the conditions Mukoto the inter-layer log data (S20), the structure comprising a.

  With this configuration, the test method according to claim 5 of the present invention generates reduced log data in which the data amount is reduced by deleting data in accordance with a predetermined rule in the reduced log data generating step, and reduced in the data restoring step. Since the data deleted in the log data generation step is restored based on the inter-layer log data, it is not necessary to discard the log data by sending the reduced log data with a reduced data amount to the transfer destination and restoring it.

  Therefore, in the test method according to claim 5 of the present invention, when transferring the log data of communication and displaying the log at the transfer destination, it is possible to reduce the lack of log caused by discarding the log data without being transferred. it can.

  The present invention relates to a test apparatus and a test method having an effect of reducing log loss caused by discarding log data without being transferred when the log data of the communication is transferred and displayed at the transfer destination. Can be provided.

It is a block block diagram in 1st Embodiment of the test apparatus which concerns on this invention. It is the figure which showed notionally the example of the test scenario in 1st Embodiment of the test apparatus which concerns on this invention. It is a figure which shows an example of the format of the log data which the log data generation part in 1st Embodiment of the test apparatus which concerns on this invention produces | generates. It is a figure which shows the display screen which the display control part in 1st Embodiment of the test apparatus which concerns on this invention displays on a display part. It is explanatory drawing about the function of the log data generation part in 1st Embodiment of the test apparatus which concerns on this invention. It is a figure which shows the data example of LTE_MAC_DATA_REQ in 1st Embodiment of the test apparatus which concerns on this invention. It is a figure which shows the data example of LTE_PHY_DATA_REQ in 1st Embodiment of the test apparatus which concerns on this invention. It is a figure which shows the process example of the reduction process part in 1st Embodiment of the test apparatus which concerns on this invention. It is a flowchart of the main routine in 1st Embodiment of the test apparatus which concerns on this invention. It is a flowchart of the reduction target determination process in 1st Embodiment of the test apparatus which concerns on this invention. It is a block block diagram in 2nd Embodiment of the testing apparatus which concerns on this invention. It is a figure which shows an example of the reduction | decrease reference table in 2nd Embodiment of the test apparatus which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
First, the configuration of the test apparatus according to the first embodiment of the present invention will be described.

  As shown in FIG. 1, a test apparatus 1 according to this embodiment includes a communication device 20 and a display device 40, and a mobile communication terminal 11 such as a mobile phone or a data communication terminal that performs wireless communication corresponding to a predetermined communication standard. Is to be tested.

  The test apparatus 1 operates as a pseudo base station according to a test scenario in which a communication sequence for performing a test and an operation sequence of each part of the apparatus are described.

  A TE (Terminal Equipment) 12 that is a communication destination of the mobile communication terminal 11 is connected to the test apparatus 1 by, for example, Gigabit Ethernet (registered trademark). The TE 12 is configured by a pseudo device having functions such as a server and a videophone terminal, for example, and transmits user data such as voice, mail, and images to the mobile communication terminal 11. In addition, the structure which connects actual TE to the test apparatus 1 may be sufficient.

  The communication device 20 includes a transmission / reception unit 21, a layer configuration unit 22, a message processing unit 23, a scenario processing unit 24, a log data buffer 25, a log data transmission unit 26, and a log data processing unit 30.

  The transmission / reception unit 21 encodes, modulates, and frequency-converts communication data from the layer configuration unit 22 to generate an RF signal and transmits the RF signal to the mobile communication terminal 11. In addition, an RF signal from the mobile communication terminal 11 is received, frequency-converted, demodulated, decoded, and sent to the layer configuration unit 22.

  The layer configuration unit 22 includes a PHY 22a that performs processing of a PHY layer (Physical Layer), a MAC 22b that performs processing of an upper MAC layer (Medium Access Control Layer), and an upper RLC layer (Radio). RLC 22c that performs processing of Link Control Layer (radio link control layer), PDCP 22d that performs processing of higher PDCP layer (Packet Data Convergence Protocol), and processing of higher RRC layer (Radio Resource Control Layer, radio resource control layer) RRC22e which performs is provided. Here, the PDCP 22d is connected to the TE 12, and inputs user data from the TE 12.

  The layer configuration unit 22 is configured to perform communication protocol processing of each layer corresponding to a predetermined communication standard, processes communication data from the transmission / reception unit 21 and sends it to the message processing unit 23, and from the message processing unit 23. Is processed and sent to the transmitting / receiving unit 21. At this time, the layer configuration unit 22 outputs communication data, which is the content of communication between layers, to the log data processing unit 30 every time processing is performed in each layer.

  The message processing unit 23 generates a message to be transmitted to the mobile communication terminal 11 under the control of the scenario processing unit 24 and sends the message to the layer configuration unit 22, and also transmits the transmission / reception unit 21 and the layer configuration unit 22 from the mobile communication terminal 11. It is designed to process messages received via

  Although not shown, the test apparatus 1 may be configured to include a plurality of sets of the transmission / reception unit 21, the layer configuration unit 22, and the message processing unit 23. A set of transmission / reception unit 21, layer configuration unit 22, and message processing unit 23 constitutes a pseudo base station that simulates the operation of one base station. For this reason, when the test apparatus 1 includes a plurality of combinations, for example, the test of the handover operation in which the mobile communication terminal 11 switches the communication destination base station can be performed by one test apparatus 1.

  The scenario processing unit 24 controls each part of the test apparatus 1 including the message processing unit 23 according to the test scenario stored in advance in the scenario storage unit 24a as a test scenario storage unit, and encrypts the data with the PDCP 22d of the layer configuration unit 22 ( Ciphering) is controlled.

  FIG. 2 conceptually shows an example of a test scenario. The test scenario describes a communication sequence for controlling the message processing unit 23 and a setting for whether to perform encryption. This setting may be performed for each individual communication sequence, or may be set as a range from one communication sequence to another communication sequence. Alternatively, the initial setting may be a setting in which encryption is not performed under specific conditions.

  The log data buffer 25 temporarily stores the log data generated by the log data processing unit 30 and outputs the log data to the log data transmission unit 26 in order from the previously stored log data. The log data output to the log data transmission unit 26 is deleted from the log data buffer 25.

  The log data transmission unit 26 is configured to transmit the log data temporarily stored in the log data buffer 25 to the display device 40. This transmission is performed at predetermined time intervals (for example, every 1 ms). For example, Gigabit Ethernet (registered trademark) is used as the interface on the display device 40 side of the log data transmission unit 26.

  The log data processing unit 30 generates log data from the communication data output from the layer configuration unit 22, generates log data by generating time information that is the actual time or the elapsed time from the start of the test. A time generation unit 32 that outputs to the unit 31; and an ID generation unit 33 that generates a serial number from the start of the test as an identifier (ID) for identifying each log and outputs it to the log data generation unit 31.

  The log data generation unit 31 includes a reduction target determination unit 31a and a reduction processing unit 31b. The log data generation unit 31 constitutes log data generation means according to the present invention.

  When the communication data is received from the layer configuration unit 22, the reduction target determination unit 31a reduces or reduces the amount of user data included in the communication data among the received communication data (non-reduction target). To be reduced). For example, the reduction target determination unit 31a determines whether it is a reduction target or a non-reduction target by any of the following.

  (1) The communication data generated within a predetermined time difference is determined by checking whether the user data matches or does not match.

  (2) Judgment is made based on the primitive name and channel information included in the header of the communication data.

  (3) Judgment is made based on the primitive name and channel information, and further judgment is made by confirming whether user data matches or does not match.

  The reduction processing unit 31b is communication data determined as a reduction target by the reduction target determination unit 31a, and is included in log data of communication between layers on the layer side where user data is output with reference to a predetermined layer. The amount of data is reduced according to a predetermined rule. Here, the predetermined rule is a rule for determining an extraction start position and an extraction method for data extracted from user data and discarding data other than the extracted data. For example, the reduction processing unit 31b is configured to reduce the amount of user data by extracting the user data every 9 bytes from the head and discarding the other data. The reduction processing unit 31b constitutes a reduction log data generation unit according to the present invention.

  The log data generation unit 31 generates a log header including time information from the time generation unit 32 and an ID from the ID generation unit 33, adds a log header to each communication data, generates log data, and stores the log data in the log data buffer 25. It is designed to output.

  FIG. 3 shows an example of a format of log data generated by the log data generation unit 31.

  FIG. 3A shows the format of log data to be non-reduced. The log data generation unit 31 adds a log header to the inter-layer communication data determined as the non-reduction target by the reduction target determination unit 31a among the inter-layer communication data received from the layer configuration unit 22, and serves as non-reduction target log data. Output to the log data buffer 25.

  FIG. 3B shows a format of log data to be reduced. The log data generation unit 31 adds a log header to the communication data determined to be the reduction target by the reduction target determination unit 31a among the communication data received from the layer configuration unit 22, and logs as verification data to be verified by the display device 40 described later. The data is output to the data buffer 25. Here, since the data amount of the collation data is reduced by the reduction processing unit 31b as described above, it is extremely small compared to the data amount of the communication data between layers.

  FIG. 3C shows details of the format of the log header. The information included in the log header includes an ID generated by the ID generation unit 33, log type identification information indicating whether to be a reduction target or a non-reduction target, time information generated by the time generation unit 32, a transmission source and a destination of communication data. A source layer and a destination layer to be indicated, channel information indicating a type of a channel of communication data, and a BTS number for identifying them when the test apparatus 1 includes a plurality of layer configuration units 22 to simulate a plurality of base stations, A primitive name indicating a primitive (setting command) of communication data, and a log data length indicating a data length of log data.

  Among these, the transmission source layer, the destination layer, the channel information, the BTS number, and the primitive name, the log data generation unit 31 identifies the transmission source of the communication data, or the communication data received by the log data generation unit 31 is analyzed. Alternatively, the log data generation unit 31 obtains the information by sending the information together with the communication data from the layer configuration unit 22. The log data length is determined and inserted when the log data generation unit 31 generates log data.

  The display device 40 is configured by, for example, a PC, and includes a log data receiving unit 41, a log data storage unit 42, a log data restoring unit 43, a display control unit 44, a display unit 45, and an operation unit 46.

  The log data receiving unit 41 receives the log data transmitted by the log data transmitting unit 26 and sends it to the log data storage unit 42. For example, Gigabit Ethernet (registered trademark) is used as the interface on the communication device 20 side of the log data receiving unit 41.

  The log data storage unit 42 is configured by a large-capacity storage medium such as an HDD (hard disk drive) or a flash memory, for example, and stores log data.

  The log data restoration unit 43 includes a restoration log data identification unit 43a and a restoration processing unit 43b. The log data restoration unit 43 constitutes a data restoration unit according to the present invention.

  The log data specifying unit 43a for restoration stores, in the log data storage unit 42, log data having user data to be included in log data to be restored, that is, log data whose user data has been reduced by the reduction processing unit 31b. The log data is specified as restoration log data.

  Specifically, the restoration log data specifying unit 43a reduces the user data included in the log data that is candidates for the restoration log data among the log data stored in the log data storage unit 42. The same process is performed to generate collation data for collation. The restoration log data specifying unit 43a collates the generated collation data with the user data included in the log data to be restored. If the two are the same, the log data from which the collation data is generated is used as the restoration log data. Identify.

  In the above-described processing, the restoration log data specifying unit 43a confirms the time stamp of the log data to be restored, and the non-reduction target log data having a time stamp within a predetermined time difference (or the same) as the time indicated by the time stamp. Are candidates for log data for restoration. Here, whether or not the log data is non-reduction target log data can be determined by checking the log type identification information of each log data. In addition to this processing, the restoration log data specifying unit 43a confirms the primitive name of the restoration target log data and restores the non-reduction target log data having the primitive name related to the primitive name to the restoration log data. It is good also as a candidate. For example, when there is a primitive name of LTE_MAC_DATA_REQ and a primitive name of LTE_PHY_DATA_REQ, these are different in terms of the MAC layer and the PHY layer, but are common in terms of data request primitives of the LTE communication method and related to each other. It is judged.

  The restoration processing unit 43b restores the restoration target log data by copying the user data included in the restoration log data identified by the restoration log data identification unit 43a to the restoration target log data. Yes. The log data included in the log data to be restored is discarded, and the restored log data is stored in the log data storage unit 42.

  The display control unit 44 generates a display screen for displaying the log, reads the log data from the log data storage unit 42 according to the operation content of the operation unit 46, and displays the log on the display unit 45 based on the information included therein. It is supposed to be displayed.

  The display unit 45 displays the log on the screen according to the control of the display control unit 44.

  The operation unit 46 includes an input device such as a keyboard, a dial, or a mouse, a display that displays test conditions, a control circuit that controls these, software, and the like. The input of each test condition and the display content of the display unit 45 To be set by the examiner.

  FIG. 4 shows a display screen 50 as a display example displayed on the display unit 45 by the display control unit 44. The display screen 50 includes a log header information display area 60 that displays information included in the log header in time series, and a communication data information display area 70 that displays communication data information.

  In the log header information display area 60, a log number display unit 61 for displaying an ID as a log serial number, a log of which layer, or an uplink / downlink log is indicated by an arrow. A layer display unit 62 for identifying, a primitive display unit 63 for displaying setting instructions for each layer, a BTS display unit 64 for displaying a BTS number for identifying them when there are a plurality of layer configuration units 22, and channel information It has a channel display unit 65 for displaying and a time display unit 66 for displaying time information.

  The communication data information display area 70 includes a message name display unit 71 that displays a message name of communication, a text display unit 72 that converts communication contents into text, and a binary display unit that displays communication contents as Hex values. 73. Here, the text display unit 72 and the binary display unit 73 are used by the tester via the operation unit 46 among the plurality of logs displayed in time series in the log header information display area 60 (or the message name display unit 71). The communication contents of the specified log are displayed.

  Next, the function of the log data generation unit 31 will be described based on the conceptual diagram shown in FIG. FIG. 5 shows seven layer processing units 81 to 87 that process each layer in the downlink in seven layers that sequentially process user data such as voice, mail, and images. Here, the layer processing unit 84 has a function of performing encryption, and can output data that is encrypted or data that is not encrypted according to the test scenario. The communication device 20 shown in FIG. 1 has a configuration in which processing is performed by five layer processing units of PHY, MAC, RLC, PDCP, and RRC. In the conceptual diagram shown in FIG. The explanation will be made assuming that The conceptual diagram shown in FIG. 5 shows the processing in the downlink, but the uplink can be applied by making the flow in the reverse direction and replacing the encryption processing with the descrambling processing. it can.

  The log data generation unit 31 generates a log data by adding a header to the communication data communicated between the layers and outputs the log data. For example, the log data generation unit 31 generates and outputs log data 91 from communication data between the layer processing units 81 and 82. Similarly, the log data generation unit 31 generates and outputs log data 92 to 96 from the communication data between the remaining layers.

  In general, in the downlink processing of the hierarchical communication protocol, the communication data processed in the data output layer includes the contents of the communication data in the data input layer. For example, the data output from the layer processing unit 83 includes data output from the layer processing unit 81. When the layer processing unit 84 does not perform encryption, for example, the data output from the layer processing unit 86 includes data output from the layer processing unit 81.

  On the other hand, when the layer processing unit 84 performs encryption, the data on the layer side (layer processing units 81 to 83 side) to which data is input is based on the layer side on which the data is output (layer processing units 81 to 83 side). It is not included in the data of the layer processing unit 85-87 side. For example, when the layer processing unit 84 performs encryption, the data output from the layer processing unit 81 is not included in the data output from the layer processing unit 86. Here, “not included” means that there is no matching part as a data string as a result of the data string being changed by encryption.

  Therefore, the log data generated by the log data generating unit 31 is, for example, the log data 96 includes the data of the log data 91 when the layer processing unit 84 does not perform encryption. On the other hand, the log data generated by the log data generation unit 31 is divided into a layer side where data is input and a layer side where data is output when the layer processing unit 84 performs encryption. The data structure is different. In this case, for example, the log data 93 includes data of the log data 91, and the log data 96 includes data of the log data 94, but the log data 96 does not include data of the log data 91.

  As described above, the reduction processing unit 31b performs a data amount reduction process based on the encryption information included in the test scenario and indicating whether or not the log data for communication between predetermined layers is to be encrypted. The amount of log data can be reduced by selecting the interval. For example, when the encryption information includes information that is encrypted by the layer processing unit 84, the reduction processing unit 31 b performs the data amount reduction processing of the log data 93 between the layer processing units 83 and 84. However, the data amount reduction processing of the log data 94 is not performed between the layer processing units 84 and 85.

  Further, the reduction processing unit 31b is configured to store log data between predetermined layers on at least one side of the layer side where data is input and the layer side where data is output based on the layer processing unit 84 based on the test scenario. Data amount reduction processing can also be performed. For example, the reduction processing unit 31b performs the data amount reduction processing of the log data 93 between the layer processing units 83 and 84 as a predetermined layer on the layer side where data is input on the basis of the layer processing unit 84. Can do. Further, for example, the reduction processing unit 31b performs the data amount reduction processing of the log data 95 between the layer processing units 85 and 86 as a predetermined layer on the layer side where the data is output on the basis of the layer processing unit 84. It can be carried out. Further, for example, the reduction processing unit 31b performs processing for reducing the data amount of the log data 92 between the layer processing units 82 and 83 as a predetermined layer on the layer side to which data is input on the basis of the layer processing unit 84. In addition, the data amount of the log data 96 can be reduced between the layer processing units 86 and 87 as a predetermined layer on the layer side where data is output with reference to the layer processing unit 84.

  Next, No. 1 shown in FIG. 003 LTE_MAC_DATA_REQ, No. 003 Taking the LTE_PHY_DATA_REQ of 004 as an example, the function of the log data generation unit 31 will be described more specifically. LTE_MAC_DATA_REQ indicates that the communication method is an LTE communication method and a signal requesting data from the MAC layer. Further, LTE_PHY_DATA_REQ indicates that the communication method is the LTE communication method and a signal requesting data from the PYH layer.

  In FIG. 4, communication data between layers is indicated by one arrow, but this is a typical example for simplifying the description, and in fact, communication data is separated and combined in each layer. A plurality of communication data may be displayed side by side between the same layers.

  FIG. 6 shows an example of LTE_MAC_DATA_REQ data. This data is communication data from the RLC 22c toward the MAC 22b.

  FIG. 7 shows a data example of LTE_PHY_DATA_REQ. This data is communication data from the MAC 22b to the PHY 22a, in which “03” is added to the LTE_MAC_DATA_REQ data as a header example. The data other than this header includes the same data (within the bold frame) as the LTE_MAC_DATA_REQ. .

  FIG. 8 schematically illustrates a processing example of the reduction processing unit 31b. In this example, the reduction processing unit 31b selects, from the LTE_PHY_DATA_REQ data, data with a circle, that is, data “7C” next to the header and data after that (every 9 bytes). The amount of data is reduced by discarding other data. In this case, the LTE_PHY_DATA_REQ data is 1/10 of the LTE_MAC_DATA_REQ data.

  Next, the operation of the test apparatus 1 will be described focusing on the flowchart shown in FIG. In the following description, it is assumed that user data is transmitted from the TE 12 to the mobile communication terminal 11. In addition, for easy understanding, communication data between RLC 22c and MAC 22b (between RLC and MAC) is not targeted for reduction, but communication data between MAC 22b and PHY 22a (between MAC and PHY) is targeted for reduction. .

  The communication device 20 communicates with the mobile communication terminal 11 according to the test scenario stored in the scenario storage unit 24a (step S11).

  The log data generation unit 31 acquires communication data between RLC and MAC (step S12). This data is, for example, the data shown in FIG.

  The log data generation unit 31 performs a reduction target determination process that is a determination as to whether or not the acquired communication data is a reduction target (step S30).

  FIG. 10 shows the reduction target determination process. The reduction target determination unit 31a determines whether or not the communication data is a reduction target (step S31). Here, since communication data between RLC and MAC is not targeted for reduction, the process returns to the main routine of FIG.

  The log data generation unit 31 generates a log header including the time information from the time generation unit 32 and the ID from the ID generation unit 33, adds the generated header to the communication data, and outputs it to the log data buffer 25 as log data. (Step S13). The log data is temporarily stored in the log data buffer 25 and then stored in the log data storage unit 42 via the log data transmission unit 26 and the log data reception unit 41 (step S14).

  The log data generation unit 31 acquires communication data between MAC and PHY (step S15). This data is, for example, the data shown in FIG.

  The reduction target determination unit 31a performs the reduction target determination process shown in FIG. 10 (step S30). In step S31 illustrated in FIG. 10, the reduction target determination unit 31a determines whether or not the communication data is a reduction target. Here, since the communication data between the MAC and the PHY is targeted for reduction, the reduction processing unit 31b performs, for example, the deletion processing shown in FIG. 8 (step S32) and returns to the main routine. As a result, the user data included in the communication data acquired by the log data generation unit 31 becomes the data shown in the lower part of FIG. 8, and is reduced to 1/10 of the original data amount.

  The log data generation unit 31 generates a log header including the time information from the time generation unit 32 and the ID from the ID generation unit 33, adds the generated header to the communication data, and outputs it to the log data buffer 25 as log data. (Step S16). The log data is temporarily stored in the log data buffer 25 and then stored in the log data storage unit 42 via the log data transmission unit 26 and the log data reception unit 41 (step S17).

  The restoration log data specifying unit 43a determines whether or not the log data stored in step S17 is a reduction target (step S18). If the restoration log data specifying unit 43a does not determine that the data is to be reduced, the process proceeds to step S21 described later.

  On the other hand, when the restoration log data specifying unit 43a determines that the data is to be reduced in step S18, the restoration log data specifying unit 43a is similar to the reduction processing unit 31b for user data included in the log data stored in the log data storage unit 42. Processing is performed to specify restoration log data (step S19). Specifically, the restoration log data specifying unit 43a, if the log data including the data shown in the lower part of FIG. 8 can be detected among the log data stored in the log data storage unit 42, the log data is restored to the restoration log. Identify as data.

  The restoration processing unit 43b restores the restoration target log data by copying the user data included in the restoration log data identified by the restoration log data identification unit 43a to the restoration target log data (step S20). . The restored log data is stored in the log data storage unit 42.

  The display control unit 44 reads out the log data stored in the log data storage unit 42 according to the operation content of the operation unit 46 and displays it on the display unit 45 (step S21).

  As described above, in the test apparatus 1 according to the present embodiment, the reduction processing unit 31b generates reduced log data in which the data amount is reduced by deleting data according to a predetermined rule, and the log data restoration unit 43 performs the reduction processing. Since the data deleted by the unit 31b is restored based on the inter-layer log data, it is not necessary to discard the log data by transmitting the reduced log data with the reduced data amount to the display device 40 that is the transfer destination and restoring it. .

  Therefore, the test apparatus 1 according to the present embodiment can reduce the lack of logs caused by discarding the log data without transferring it when transferring the log data of communication and displaying the log at the transfer destination.

  In the above-described embodiment, the display device 40 is configured to store the log data received by the log data receiving unit 41 in the log data storage unit 42 and then perform a restoration process by the log data restoration unit 43. Alternatively, the display device 40 may include a display device-side log data buffer (not shown), and the log data received by the log data receiving unit 41 may be temporarily stored in the display device-side log data buffer. The display device side log data buffer is composed of a RAM or the like that can be written / read at high speed. In this case, the log data restoration unit 43 performs restoration processing from the log data temporarily stored in the display device side log data buffer, and stores the restored log data in the log data storage unit 42.

  The log data storage unit 42 uses a large-capacity storage medium such as a hard disk drive or a flash memory to store a large amount of log data. These storage media take time to write and read data. There is a case. With the above configuration, the test apparatus 1 in the present embodiment can reduce the number of accesses to the log data storage unit 42 and increase the processing speed.

  Further, the log data generation unit 31 sets the log data between predetermined layers as non-reduction targets, and the layer side on which data is output on the basis of the predetermined layers (that is, the lower layer side and the uplink in the downlink) Then, log data between layers on the higher layer side is processed as a reduction target. For this reason, non-reduction target log data (restoration log data) is generated earlier in time than the reduction target log data (restoration target log data) and transferred to the display device 40. The data restoration unit 43 can perform restoration processing immediately upon receiving the restoration target log data. Thereby, the test apparatus 1 in this embodiment can perform the restoration process efficiently. In particular, the test apparatus 1 in the present embodiment can reduce the storage capacity in the configuration including the display device side log data buffer.

(Second Embodiment)
As shown in FIG. 11, the test apparatus 2 in the present embodiment tests the mobile communication terminal 13. The mobile communication terminal 13 operates in a transmission mode indicating an operation mode of packet transmission determined in advance by a communication method in which a modulation coding rate method and the number of resource blocks are determined according to a transmission path condition, and includes block data including user data Send and receive.

  The test apparatus 2 includes a log data generation unit 35 obtained by changing the log data generation unit 31 (see FIG. 1) of the test apparatus 1 in the first embodiment. Therefore, the same components as those in the test apparatus 1 are denoted by the same reference numerals and the description thereof is omitted.

  The log data generation unit 35 extracts each information of the modulation coding rate method, the number of resource blocks, and the transmission mode from the above test scenario, and the maximum transport block size (TBS) that can be transmitted per predetermined time from these information. ) To get to. In addition, when such information is changed during the execution of the test scenario, the log data generation unit 35 reacquires the TBS.

  In addition, the log data generation unit 35 stores a reduction reference table storage unit 35a that stores a reduction reference table in which rule information for reducing the amount of user data and TBS are associated, and the reduction reference table storage unit 35a. A reduction processing unit 35b that performs a reduction process of the data amount of the user data based on the stored reduction reference table. Here, the reduction reference table storage unit 35a constitutes a table storage unit according to the present invention.

  FIG. 12 shows an example of the reduction reference table. In the example shown in FIG. 12, as rule information for reducing the amount of user data, an extraction ratio indicating a ratio of data extracted from user data is associated in advance for each TBS. Here, for example, extraction ratio = 1/1 indicates that all data is extracted from the user data. Further, for example, extraction ratio = 1/5 indicates that data is extracted from user data every four pieces (for example, every four bytes). The test apparatus 2 can set an optimum reduction ratio according to the TBS by using this reduction reference table.

  For example, when TBS = a to b, the reduction processing unit 35b extracts all data from the user data, that is, does not perform the user data reduction process. This process is effective when the TBS is relatively small. In addition, for example, the reduction processing unit 35b extracts data at an extraction ratio of 1/5 when TBS = d, that is, every fourth data. In this case, the data amount of user data is 20% with respect to the original data amount.

  As described above, the test apparatus 2 according to the present embodiment can select not to perform the user data reduction process when the TBS is relatively small based on the reduction reference table, and reduce the user data as the TBS increases. The amount can also be increased.

  As described above, since the test apparatus 2 according to the present embodiment includes the reduction processing unit 35b that extracts data based on the reduction reference table, the data amount of the log data is preferably reduced according to the TBS. Can do.

  As described above, the test apparatus and the test method according to the present invention reduce log omissions caused by discarding log data that cannot be transferred when the log data of the communication is transferred and displayed at the transfer destination. In order to test whether or not this mobile communication terminal can communicate normally with a mobile communication terminal such as a mobile phone or a data communication terminal as a test target, It is useful as a test apparatus and a test method for performing communication and displaying a log during communication.

DESCRIPTION OF SYMBOLS 1, 2 Test apparatus 11, 13 Mobile communication terminal 20 Communication apparatus 21 Transmission / reception part 22 Layer structure part 23 Message processing part 24 Scenario processing part 24a Scenario memory | storage part (test scenario memory | storage means)
25 log data buffer 26 log data transmission unit 30 log data processing unit 31 log data generation unit (log data generation means)
31a Reduction target determination unit 31b Reduction processing unit (reduction log data generation means)
35 log data generation unit 35a reduction reference table storage unit (table storage means)
35b Reduction processing unit 40 Display device 41 Log data receiving unit 42 Log data storage unit 43 Log data restoring unit (data restoring means)
43a Restoring log data specifying unit 43b Restoring processing unit 44 Display control unit 45 Display unit 46 Operation unit

Claims (5)

A mobile communication terminal (11) that communicates based on a communication protocol having a plurality of layers of layers through which data is transmitted is connected, and the mobile communication terminal is tested by acquiring log data of communication between the layers A test device (1),
Log data generating means (31) for generating log data between layers, which is log data of communication between predetermined layers;
Generate reduced log data with a reduced data amount by deleting data included in log data of communication between layers on the layer side where the data is output with reference to the predetermined layer according to a predetermined rule. Reduction log data generation means (31b);
Data restoration means (43) for restoring the data deleted by the reduction log data generation means based on the inter-layer log data on the condition that the inter-layer log data includes the reduction log data;
A test apparatus comprising: The communication protocol further includes an encryption layer for outputting encrypted communication log data,
The reduction log data generation unit generates the reduction log data between a predetermined layer on at least one of a layer side to which the data is input and a layer side to which the data is output on the basis of the encryption layer. The test apparatus according to claim 1, wherein the test apparatus is one. Test scenario storage means (24a) for storing a test scenario for testing the mobile communication terminal and including encryption information indicating whether or not to encrypt communication log data between predetermined layers )
The test apparatus according to claim 2, wherein the reduction log data generation unit selects between layers that generate the reduction log data based on the encryption information. The mobile communication terminal transmits and receives block data in which a block size for transmitting the data is determined according to a transmission path condition,
Table storage means (35a) for storing a reduction reference table in which rule information for reducing the amount of data and the block size are associated;
The test apparatus according to any one of claims 1 to 3, wherein the reduction log data generation unit generates the reduction log data based on the reduction reference table. A mobile communication terminal (11) that communicates based on a communication protocol having a plurality of layers in which data is transmitted is connected, and the test apparatus (1) that acquires log data of communication between the layers is used to A mobile communication terminal test method for testing a mobile communication terminal,
A log data generation step (S13) for generating log data between layers, which is log data of communication between predetermined layers;
Generate reduced log data with a reduced data amount by deleting data included in log data of communication between layers on the layer side where the data is output with reference to the predetermined layer according to a predetermined rule. Reduction log data generation step (S16, S32);
A data restoration step (S20) for restoring the data deleted in the reduction log data generation step on the condition that the inter-layer log data includes the reduction log data based on the inter-layer log data;
The mobile communication terminal test method characterized by including.

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