JP2016181745A - Wireless terminal, program, and communication log acquisition method - Google Patents

Abstract

A communication log for a wireless section and a wired section between a wireless terminal and a server is specified appropriately. A wireless terminal 1 that communicates with a server 3 connected to a wired network via a wireless access point 4, and a first acquisition unit 142 that acquires a communication log 200 of a wireless section in communication with the server 3. A first extraction unit 143 that extracts, as reference information 201, a data size of a frame that is transmitted to or received from the server 3 from the acquired communication log 200, and a transmission / reception order of the frame; The second acquisition unit 144 that acquires the communication log 300 related to communication with itself from all the communication logs 301 stored in the server 3 and the acquired communication log 300 in association with the communication log 200 allows transmission and reception in the wireless section. And a specifying unit 145 for specifying the contents of each frame. [Selection] Figure 2

Description

  The present invention relates to a wireless terminal, a program, and a communication log acquisition method for acquiring a communication log of server communication via a wireless access point.

  Throughput measurement is widely used as an evaluation of communication via a network. Throughput measurement is performed based on the round-trip time and the packet loss rate from when a plurality of packets are transmitted until the ACK response is received, as in Patent Document 1. However, the calculated throughput is an average value of the communication speed during a certain period, and does not necessarily represent the actual state of communication.

Specifically, in an environment where the communication speed is 1 Mbps at both the timing T1 and the timing T2, and an environment where the communication speed is 1.9 Mbps at the timing T1 and the communication speed is 0.1 Mbps at the timing T2, the average throughput is Although the same, when communication is actually performed, a difference occurs in communication quality.
Thus, since the time granularity when measuring the throughput is larger than the time granularity when the communication quality changes, a new communication evaluation method that is not a throughput measurement is required.

  As an example of such a communication evaluation method, a mechanism for analyzing a communication log between a communication device and a server and evaluating communication quality can be considered. According to such a mechanism, since the time granularity becomes fine, it is possible to measure the communication quality close to the quality actually felt by the user.

JP 2007-116329 A

However, the mechanism for analyzing communication logs and measuring communication quality has the following problems.
When wireless LAN communication is performed via a wireless access point with a communication device such as a smartphone, the communication device itself does not have an API for capturing a MAC layer communication log, and a wireless LAN monitor device having this function must be used. For example, the MAC layer communication log cannot be captured. On the other hand, when the wireless LAN communication is encrypted with WPA2, even the wireless LAN monitor device cannot see the IP layer or higher, and what signal is transmitted in the wireless section (between the communication device and the wireless access point). Cannot be determined.

  Also, when the communication device accesses the server via the proxy server, the server cannot identify the target communication device, and from the communication log of the wired section (between the wireless access point and the server) held by itself, A communication log related to the target communication device cannot be extracted.

  As described above, when measuring communication quality by analyzing communication logs, it is impossible to grasp the specific contents of the communication logs in the wireless section, and appropriately extract the communication logs in the target wired section. There is a problem that can not be.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a wireless terminal, a program, and a communication log acquisition method that can appropriately specify communication logs in a wireless section and a wired section.

  In the first aspect of the present invention, a wireless terminal that communicates with a server connected to a wired network via a wireless access point, and acquires a first log that is a communication log of a wireless section in communication with the server A first extraction unit that extracts, as reference information, a data size of a frame that is transmitted to or received from the server and a transmission / reception order of the frame from the acquired first log And a second acquisition unit that acquires a second log that is a communication log related to communication with itself among communication logs stored by the server, based on the reference information extracted from the first log, and the acquired Based on the second log, a wireless terminal is provided that includes a specifying unit that specifies the content of the frame transmitted / received by itself recorded as the first log.

  In addition, the second acquisition unit acquires, from the server, a communication log having an address related to itself as a transmission source or a transmission destination, among the communication logs stored in the server, and the acquired communication It is good also as providing the 2nd extraction part which extracts the said 2nd log regarding communication with the said server and self based on the said reference information from a log.

  A display unit that displays content according to communication with the server; and a determination unit that determines whether a time from when the request is made to the server until the content is displayed exceeds a threshold value. In addition, the first acquisition unit and the second acquisition unit may acquire the first log and the second log for a predetermined period before and after the request when the determination unit determines that the threshold value is exceeded. Good.

  Moreover, it is good also as providing the measurement part which measures the communication quality between the said servers based on the said 1st log and the said 2nd log which specified the content of the flame | frame.

  In the second aspect of the present invention, a wireless terminal that communicates with a server connected to a wired network via a wireless access point acquires a first log that is a communication log of a wireless section in communication with the server. 1 acquisition unit, a first extraction unit that extracts, as reference information, a data size of a frame that is transmitted to or received from the server, and an order of transmission / reception of the frame from the acquired first log, Based on the reference information extracted from the first log, a second acquisition unit that acquires a second log that is a communication log relating to communication with itself among communication logs stored by the server, and based on the acquired second log Thus, a program is provided that functions as a specifying unit that specifies the content of the frame transmitted and received by itself recorded as the first log.

  According to a third aspect of the present invention, there is provided a communication log acquisition method for acquiring a communication log related to a wireless terminal that communicates with a server connected to a wired network through a wireless access point, wherein the wireless section is in communication with the server. Acquiring a first log that is a communication log of the data, a data size of a frame that the wireless terminal has transmitted to or received from the server from the acquired first log, and an order of transmission and reception of the frame And acquiring a second log, which is a communication log related to communication with the wireless terminal, among communication logs stored by the server, based on the reference information extracted from the first log. And specifying the content of the frame in the first log based on the acquired second log. To provide a communication log acquisition method.

  ADVANTAGE OF THE INVENTION According to this invention, the communication log of a radio | wireless area and a wired area can be specified appropriately.

It is a figure which shows the structure of a communication system. It is a block diagram which shows the function structure of a radio | wireless terminal, a radio | wireless monitor apparatus, and a server. It is a figure which shows an example of the communication log of a radio area. It is a figure which shows an example of the communication log of a wired area. It is a figure which shows an example of the communication log of a wired area. It is a figure which shows an example of the communication log of the radio | wireless area linked | related with the communication log of the wired area. It is a figure which shows the flow of a process of a communication system. It is a figure which shows an example of the sequence produced | generated as a result of matching with the communication log of a wireless area, and the communication log of a wired area.

[Overview of wireless terminal 1]
First, an outline of the wireless terminal 1 will be described with reference to FIG. FIG. 1 is a diagram illustrating a configuration of a communication system S including a wireless terminal 1. As shown in FIG. 1, in the communication system S, the wireless terminal 1 communicates with the server 3 via the wireless access point 4. The wireless terminal 1 and the wireless access point 4 are wireless sections for wireless communication, and the wireless access point 4 and the server 3 are wired sections for wired communication.
A wireless monitor device 2 is provided in the wireless section, and a communication log 200 indicating communication contents in the wireless section is acquired. On the other hand, a communication log 300 indicating communication contents in the wired section is managed in the server 3.

When the communication log 200 in the wireless section is encrypted by WPA2, the communication signal is transmitted without being visible to the IP layer or higher although the signal to be communicated is uplink / downlink and the data size of the signal is known. The content of the signal (for example, that the downstream signal is moving image data or text data) is not known.
On the other hand, since the communication log 300 of the wired section is managed on the server 3 side, the content of the signal to be communicated is known, but when the wireless terminal 1 is communicating with the server 3 via the proxy server, the server 3 Since the address seen from the wireless terminal 1 is different from the address of the wireless terminal 1, the communication log 300 related to the target wireless terminal 1 cannot be appropriately extracted.

In this regard, in the wireless terminal 1, the contents of the communication log 200 in the wireless section can be grasped by associating the communication log 200 in the wireless section and the communication log 300 in the wired section, and communication managed by the server 3. The communication log 300 related to the wireless terminal 1 is appropriately extracted from the log.
Hereinafter, a specific configuration of the wireless terminal 1 will be described with reference to the drawings.

[Configuration of wireless terminal 1]
FIG. 2 is a block diagram illustrating functional configurations of the wireless terminal 1, the wireless monitor device 2, and the server 3. The wireless terminal 1 is an arbitrary terminal device capable of wireless communication via the wireless access point 4, and is, for example, a mobile phone, a smartphone, a game machine, a personal computer, or the like. The wireless terminal 1 is connected to the wireless monitoring device 2 and the server 3 via a wired or wireless connection.
The wireless monitoring device 2 monitors a signal transmitted and received in a wireless section (between the wireless terminal 1 and the wireless access point 4), and captures a MAC layer log of the signal. The server 3 provides a predetermined service such as Web browsing to the wireless terminal 1.

As shown in FIG. 2, the wireless terminal 1 includes a communication unit 11, a display unit 12, a storage unit 13, and a control unit 14.
The communication unit 11 includes a transmission antenna and a reception antenna. The communication unit 11 modulates the signal output from the control unit 14 to generate an RF (Radio Frequency) signal. The communication unit 11 is connected to an external device such as the wireless access point 4 via the transmission antenna. Wireless transmission to the device. In addition, the communication unit 11 demodulates the RF signal received via the reception antenna and outputs the demodulated signal to the control unit 14.

The display unit 12 includes a liquid crystal display, an organic EL (Electro-Luminescence) display, and the like, and displays various information, for example, service contents provided by the server 3 based on the control of the control unit 14.
The storage unit 13 is a memory such as a ROM and a RAM, or a storage medium such as a hard disk. The storage unit 13 stores a program for causing the control unit 14 to function and data generated when the control unit 14 operates.

  The control unit 14 is configured by, for example, a CPU, and executes various programs stored in the storage unit 13, thereby determining the determination unit 141, the first acquisition unit 142, the first extraction unit 143, the second acquisition unit 144, It functions as the specifying unit 145 and the measuring unit 146.

  The determination unit 141 determines whether or not a delay has occurred in the communication with the server 3 to the extent that the user feels a deterioration in communication quality. As an example, the determination unit 141 determines whether the time from when a predetermined service is requested to the server 3 until the service content is displayed on the display unit 12 exceeds a threshold value.

If the determination unit 141 determines that the threshold value has been exceeded, the first acquisition unit 142 acquires the communication log 200 of the wireless section in communication with the server 3. Specifically, the first acquisition unit 142 requests the wireless monitoring device 2 for a communication log for a predetermined period before and after making a request with a delay, and uses the communication log as the communication log 200 for the wireless monitoring device 2. Get from.
Thus, the 1st acquisition part 142 acquires the communication log 200 of the period according to the period which the delay produced, ie, the time granularity in which a user feels deterioration of communication quality.

  The first extraction unit 143 extracts, as reference information, the data size of the frame transmitted from the wireless terminal 1 to the server 3 or received from the server 3 and the transmission / reception order of the frame from the acquired communication log 200.

Here, FIG. 3 shows an example of the communication log 200 acquired by the first acquisition unit 142. In FIG. 3, the order in which the wireless terminal 1 transmits and receives frames is used as the horizontal axis, but the time at which the wireless terminal 1 transmits and receives frames may be used.
Since the wireless monitoring device 2 can capture the MAC layer log of signals transmitted and received in the wireless section, as shown in FIG. 3, the wireless terminal 1 and the server specified by the MAC address are identified from the communication log 200. It is possible to grasp the data size of the frame communicated between the three and the type of uplink / downlink. On the other hand, since the IP layer and higher are encrypted, the communication log 200 cannot grasp the contents of the frame to be communicated.

  As illustrated in the reference information 201 in FIG. 3, the first extraction unit 143 extracts the uplink / downlink type and the data size from the communication log 200 in association with the communication order. The reference information 201 extracted by the first extraction unit 143 is used to link the communication log 200 in the wireless section and the communication log 300 in the wired section.

Returning to FIG. 2, when the second acquisition unit 144 determines that the determination unit 141 has exceeded the threshold value, the second acquisition unit 144 determines the server 3 based on the reference information 201 (up / down type, data size, order) extracted from the communication log 200. The communication log 300 relating to the communication with the wireless terminal 1 is acquired from the server 3 in the communication log stored in FIG.
The server 3 stores a communication log between devices that communicate with the server 3. Here, as shown in FIG. 4A, when a proxy server is interposed in communication with the server 3, the address seen from the server 3 is not the target wireless terminal 1 but the address of the proxy server. For this reason, the server 3 cannot identify the target wireless terminal 1.

On the other hand, since the tendency of the communication log 200 in the wireless section (transmission / reception order and data size) and the tendency of the communication log 300 in the wired section are in a correspondence relationship, the second acquisition unit 144 provides the reference information indicating the tendency of the wireless section. The communication log stored in the server 3 is narrowed down using 201, and only the communication log 300 of the target wireless terminal 1 is acquired.
Note that such narrowing may be performed on the server 3 side that has received a communication log request from the wireless terminal 1 or may be performed on the wireless terminal 1 side. In this regard, in the present embodiment, the second acquisition unit 144 includes a third acquisition unit 147 and a second extraction unit 148 in order to narrow down on the wireless terminal 1 side.

The third acquisition unit 147 acquires, from the server 3, a communication log having an address related to the wireless terminal 1 as a transmission source or a transmission destination among the communication logs stored in the server 3. For example, in the case of the network configuration as shown in FIG. 4A, the target wireless terminal 1 accesses the server 3 via the proxy server “Proxy1”. Therefore, the third acquisition unit 147 acquires, from the server 3, the communication log 302 in which the transmission source or the transmission destination is “Proxy1” among all the communication logs 301 illustrated in FIG.
Since the proxy servers “Proxy1” are connected to the access points “AP1” and “AP2”, and the access points “AP1” and “AP2” are connected to the plurality of wireless terminals 1, the entire communication log 301 It is not possible to narrow down the communication log 300 of the target wireless terminal 1 only by narrowing down to the communication log 302.

  The second extraction unit 148 further narrows down the communication log 302 using the reference information 201 indicating the tendency of the wireless section, and from the communication log 302 with the proxy server “Proxy1” as the communication partner, the server 3 and the target wireless terminal 1 The communication log 300 related to the communication is extracted. Specifically, the second extraction unit 148 extracts the communication log of the wired section corresponding to the trend (transmission / reception order and data size) of the communication log 200 of the wireless section specified from the reference information 201 as the communication log 300. .

  FIG. 5 is a diagram illustrating a communication log 300 related to communication between the server 3 and the target wireless terminal 1 obtained as a result of narrowing down all communication logs 301 by the transmission source, transmission destination, and reference information 201. FIG. 5 shows a communication log when the wireless terminal 1 is browsing the Web. Since the server 3 can also capture more than the IP layer, the communication log 300 shows the contents of the signal to be communicated. In the example illustrated in FIG. 5, it can be seen that the request and response are performed in the order of text data, CSS data, and image data between the wireless terminal 1 and the server 3.

Returning to FIG. 2, the identification unit 145 identifies the content of the frame transmitted and received by the wireless terminal 1 recorded as the communication log 200 of the wireless section, based on the communication log 300 of the wired section acquired by the second acquisition unit 144. . Specifically, the specifying unit 145 associates the communication log 200 and the communication log 300 on a one-to-one basis based on the type of transmission / reception and the data size, and based on the content of the IP layer or higher obtained from the communication log 300. Thus, the contents of each frame transmitted / received in the wireless section are specified.
FIG. 6 is a diagram illustrating an example of the communication log 200A in which the specification unit 145 specifies the contents of each frame. Compared with the communication log 200 of FIG. 3, it can be seen that the contents of the transmitted and received data frames can be specified in the communication log 200A of FIG.

  Returning to FIG. 2, the measurement unit 146 measures the communication quality between the server 3 and the wireless terminal 1 based on the communication log 200 </ b> A, the communication log 300, and other communication logs that specify the content of the frame. And in which of the wired sections the communication quality is detected. As an example, when communication quality deteriorates in a wireless section, a delay in response time of the wireless terminal 1 and frame retransmission from the wireless terminal 1 frequently occur due to wireless congestion, hidden terminals, and the like. Further, when the communication quality deteriorates in the wired section, a delay in the response time of the server 3 and a TCP retransmission from the server 3 occur frequently due to the influence of an overload of the server 3 or overflow from the queue. The measuring unit 146 detects these problems based on the communication log 200A, the communication log 300, and other communication logs, and specifies the timing at which these problems occur from the contents of the communication log 200A specified by the specifying unit 145. .

The wireless monitoring device 2 includes a log extraction unit 21.
The log extraction unit 21 monitors a signal transmitted and received in a wireless section and captures a MAC layer log of the signal. Further, in response to a request from the first acquisition unit 142 of the wireless terminal 1, the log extraction unit 21 extracts the communication log 200 for a predetermined period before and after receiving the request. Specifically, the log extraction unit 21 identifies the target wireless terminal 1 based on the requested MAC address of the wireless terminal 1 and extracts the communication log 200 of the wireless section of the wireless terminal 1. The log extraction unit 21 transmits the extracted communication log 200 directly or indirectly via the wireless access point 4 to the requested wireless terminal 1.

The server 3 includes a log extraction unit 31.
The log extraction unit 31 extracts a communication log to be transmitted to the target wireless terminal 1 from the communication logs in the wired section managed by the server 3 and transmits the communication log to the wireless terminal 1. The wired section communication log 300 associated with the wireless section communication log 200 is obtained by narrowing down the communication log managed by the server 3 into two stages by reference information 201 (up / down type, data size, order). It is. The log extraction unit 31 may transmit a communication log before narrowing down to the wireless terminal 1 or may transmit a communication log after performing any narrowing down.

[Processing of communication system S]
The functional configurations of the wireless terminal 1, the wireless monitoring device 2, and the server 3 that constitute the communication system S have been described above. Subsequently, a processing flow of the communication system S will be described with reference to FIG. 7 is a process performed in a situation where the wireless terminal 1 communicating with the server 3 via the wireless access point 4 uses a service provided by the server 3.

  First, in step S <b> 1, the determination unit 141 of the wireless terminal 1 determines whether the time from when the request is made to the server 3 until the service content is displayed exceeds a threshold value. When this determination is YES, the determination unit 141 determines that a delay has occurred, and moves the process to step S2. On the other hand, when this determination is NO, the determination unit 141 determines that no delay has occurred, and ends the process.

  Subsequently, in step S <b> 2, the first acquisition unit 142 of the wireless terminal 1 requests the wireless monitoring device 2 for a communication log of a wireless section in a period in which a delay has occurred. Upon receiving this request, in step S 3, the log extraction unit 21 of the wireless monitor device 2 extracts the communication log 200 of the wireless section of the target wireless terminal 1 and transmits it to the wireless terminal 1.

  Subsequently, in step S4, the first extraction unit 143 of the wireless terminal 1 analyzes the communication log 200 acquired from the wireless monitoring device 2 and extracts reference information 201 (up / down type, data size, order). . Subsequently, in step S <b> 5, the second acquisition unit 144 of the wireless terminal 1 requests the server 3 for the communication log of the wired section during the delay period, based on the extracted reference information 201.

  Subsequently, in step S <b> 6, the log extraction unit 31 of the server 3 extracts the communication log of the wired section based on the request from the wireless terminal 1 and transmits it to the wireless terminal 1. When the communication logs 200 and 300 for the wireless section and the wired section are acquired, in step S7, the specifying unit 145 of the wireless terminal 1 performs a pairing process on the communication log 200 and the communication log 300 based on the type of transmission / reception and the data size. 1 specifies the content of each frame transmitted and received in the wireless section.

  Subsequently, in step S8, the measurement unit 146 of the wireless terminal 1 generates a sequence to be described later with reference to FIG. 8 based on the communication log 200A, the communication log 300, and other communication logs, and subsequently, in step S9, the communication quality. In addition to detecting the deterioration location, the user of the wireless terminal 1 is notified as appropriate, and the process is terminated.

  Here, an example of the sequence generated in step S8 is shown in FIG. FIGS. 8A and 8B are sequence examples when the communication quality of the wireless section is deteriorated. In FIG. 8A, the communication quality of the wireless section deteriorates due to congestion of the wireless section. FIG. 8B shows an example in which the communication quality in the wireless section is degraded by the hidden terminal. 8C and 8D are sequence examples when the communication quality of the wired section is deteriorated. In FIG. 8C, the communication quality of the wired section is caused by an overload of the server 3. FIG. 8D illustrates an example in which the communication quality of the wired section is deteriorated due to congestion of the wired section.

  In the example shown in FIG. 8A, the result of carrier sense performed before the wireless terminal 1 makes an ACK response indicates that another wireless terminal is in communication and the ACK response is delayed. Such delay refers to the communication log 200A in the wireless section, identifies the content transmitted / received by the wireless terminal 1, and looks at the difference between the time when the transmission from the server 3 is received and the time when the ACK response is transmitted. Can be grasped.

  In the example illustrated in FIG. 8B, as a result of the presence of hidden terminals that cannot be found by carrier sense performed by the wireless terminal 1, it is indicated that the number of frame retransmissions is increasing. Such frame retransmission can be grasped by detecting the presence or absence of a retransmission flag in another communication log in the wireless section. Further, by associating the retransmission of the frame with the communication log 200A in the wireless section, it is possible to grasp the communication contents when the retransmission increases (for example, the retransmission increases at the timing of requesting the Web page).

  In the example illustrated in FIG. 8C, the response to the request from the wireless terminal 1 is delayed as a result of an increase in the load on the server 3. Such a delay can be grasped by referring to the communication log 300 in the wired section and looking at the difference between the time when the server 3 receives the request and the time when the response is returned.

  In the example shown in FIG. 8D, it is shown that the transmission queue of the server 3 overflows and the decrease of the window size is repeated as a result of the wired section being congested. Such a situation can be grasped by referring to the communication log 300 in the wired section and seeing whether or not a TCP retransmission has occurred from the server 3.

[Effect of wireless terminal 1]
According to the present embodiment described above, the wireless terminal 1 communicating with the server 3 can appropriately identify the communication log of the wireless section and the wired section.
When the wireless terminal 1 accesses the server 3 via a proxy server, the communication log 300 of the target wireless terminal 1 is specified because it cannot be understood from the server 3 that the communication partner is the wireless terminal 1. I can't do it. In this regard, in this embodiment, based on the reference information 201 (uplink / downlink type, data size, order) extracted from the communication log 200 in the wireless section, the entire communication log 301 in the wired section is narrowed down, and the target wireless The communication log 300 of the terminal 1 is specified. As a result, even if the target wireless terminal 1 cannot be grasped from the address via the proxy server, the communication log 300 of the wired section of the target wireless terminal 1 can be appropriately specified.

  In addition, in the case where the wireless LAN communication is encrypted with WPA2, the contents of the communication log in the wireless section cannot be specifically grasped. In this regard, in the present embodiment, the identified communication log 300 is associated with the communication log 200 in the wireless section on a one-to-one basis, so that transmission / reception is performed in the wireless section from the contents of the communication log 300 (see “Info” column in FIG. 5). Identify the contents of each frame. As a result, even when the wireless terminal 1 itself does not have a function of capturing a communication log and the wireless monitoring device 2 that captures the encrypted content must be used, the wireless region communication log 200A Can be identified appropriately.

Further, the wireless terminal 1 acquires the communication log 200 </ b> A for the wireless section and the communication log 300 for the wired section when there is a delay between the request to the server 3 and the display of the service content. Thereby, it is possible to appropriately specify the communication log 200A and the communication log 300 in a period corresponding to the time granularity at which the user feels the deterioration of the communication quality.
In addition, when the wireless terminal 1 appropriately specifies the communication logs in the wireless section and the wired section, the wireless terminal 1 measures the communication quality using these communication logs, and specifies the section where the quality has deteriorated and the cause thereof. As an example, the wireless terminal 1 refers to the sequence illustrated in FIG. 8 generated based on the communication log 200A, the communication log 300, and other communication logs, and in which of the wireless section and the wired section the quality has deteriorated, etc. Is identified. By notifying the user of the wireless terminal 1 of this result, the wireless terminal 1 can appropriately measure the communication quality actually felt by the user.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. In particular, the specific embodiments of the distribution / integration of the devices are not limited to those illustrated above, and all or a part thereof may be added in arbitrary units according to various additions or according to functional loads. It can be configured functionally or physically distributed and integrated.

  For example, in the above embodiment, the wireless LAN communication is described as an example of the communication in the wireless section. However, the present invention relates to the wireless section and the wired section by associating the communication log in the wireless section and the communication log in the wired section. The communication log in the section is appropriately specified, and the communication in the wireless section is not limited to the wireless LAN communication.

DESCRIPTION OF SYMBOLS 1 ... Wireless terminal 11 ... Communication part 12 ... Display part 13 ... Memory | storage part 14 ... Control part 141 ... Determination part 142 ... 1st acquisition part 143 ... 1st Extraction unit 144 ... second acquisition unit 145 ... identification unit 146 ... measurement unit 147 ... third acquisition unit 148 ... second extraction unit 2 ... wireless monitoring device 3 ... server 4 ... Wireless access point

Claims (6)

A wireless terminal that communicates with a server connected to a wired network via a wireless access point,
A first acquisition unit that acquires a first log that is a communication log of a wireless section in communication with the server;
A first extraction unit that extracts, as reference information, a data size of a frame that is transmitted to the server or received from the server and an order of transmission and reception of the frame from the acquired first log;
Based on the reference information extracted from the first log, a second acquisition unit that acquires a second log that is a communication log related to communication with itself among communication logs stored by the server;
Based on the acquired second log, a specifying unit that specifies the content of a frame transmitted and received by the self recorded as the first log;
A wireless terminal comprising: The second acquisition unit includes
Of the communication log stored by the server, a third acquisition unit that acquires from the server a communication log having an address related to itself as a transmission source or transmission destination
A second extraction unit that extracts the second log related to communication between the server and itself based on the reference information from the acquired communication log;
The wireless terminal according to claim 1, further comprising: A display unit for displaying content according to communication with the server;
A determination unit that determines whether a time from when the request is made to the server until the content is displayed exceeds a threshold value,
When the first acquisition unit and the second acquisition unit determine that the determination unit exceeds the threshold, the first acquisition unit and the second acquisition unit acquire the first log and the second log for a predetermined period before and after the request,
The wireless terminal according to claim 1 or 2. A measurement unit for measuring communication quality with the server based on the first log and the second log specifying the content of a frame;
The wireless terminal according to any one of claims 1 to 3, further comprising: A wireless terminal that communicates with a server connected to a wired network via a wireless access point,
A first acquisition unit that acquires a first log that is a communication log of a wireless section in communication with the server;
A first extraction unit that extracts, from the acquired first log, as reference information, a data size of a frame transmitted to the server or received from the server, and a transmission / reception order of the frame;
Based on the reference information extracted from the first log, a second acquisition unit that acquires a second log that is a communication log related to communication with itself among communication logs stored by the server;
Based on the acquired second log, a specifying unit that specifies the content of the frame recorded and transmitted by the first log,
Program to function as. A communication log acquisition method for acquiring a communication log related to a wireless terminal communicating with a server connected to a wired network via a wireless access point,
Obtaining a first log that is a communication log of a wireless section in communication with the server;
Extracting from the acquired first log as reference information the data size of the frame transmitted to or received from the server by the wireless terminal and the transmission / reception order of the frame;
Based on the reference information extracted from the first log, obtaining a second log that is a communication log related to communication with the wireless terminal among communication logs stored by the server;
Identifying the contents of the frame in the first log based on the acquired second log;
Communication log acquisition method including

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