KR20100023017A - Method of testing for wireless lan system and test protocol - Google Patents

Abstract

PURPOSE: A checking method of a wireless LAN system and a checking protocol thereof are provided to check the state of the wireless LAN system and an AP and easily solve problems of the wireless LAN system and AP. CONSTITUTION: A checkup wireless terminal scans a checkup AP(Access Point) through a specific protocol(S301). The checkup wireless terminal obtains reading/writing permissions by the connection to a corresponding checkup AP(S302). The checkup wireless terminal reads parameters of the checkup AP. The checkup wireless terminal corrects errorneous parametric values(S303). The checkup wireless terminal cancels reading/writing permissions with the checkup AP(S304). The checkup wireless terminal reboots the checkup AP(S305).

Description

Method of testing for wireless LAN system and test protocol

The present invention relates to a diagnostic method and diagnostic protocol of a wireless LAN system, and more particularly, to a remote diagnostic apparatus capable of remotely checking a failure of a wireless LAN system, and a diagnostic method and diagnostic protocol of a wireless LAN system providing a protocol. .

Wireless LAN is a flexible data communication system implemented as an extension or substitute for a wired LAN. In a wired LAN environment, data is generally transmitted and received using transmission lines such as coaxial cables and optical fibers. With only minimal line connections to the facility, it enables the transmission and reception of data wirelessly over the Atmosphere using radio frequency or infrared technology.

Most of the wireless LANs use radio waves in the 2.4Ghz band, have a radio wave reaching distance from 40 meters to hundreds of meters, and the longer the reach, the greater the mobility through roaming.

Operators who provide WLAN service should perform network operation and management.In general, when a failure report is received from a user who uses the WLAN service, the service provider will dispatch a technician to the user's home or company to directly Diagnosis and troubleshooting are possible.

However, as described above, a method of diagnosing and resolving a failure through a direct visit by hiring a technician by a WLAN service user requires a large number of technicians. There is a problem of waiting for a long time for the technician to visit for a long time without receiving A / S (After Service) immediately.

In addition, a user can call a service center without dispatching a technician to solve a simple problem according to the guidance of a service center's counselor. This method also increases the cost of hiring an agent and the user has no knowledge of the WLAN system. There is a problem that cannot be applied in the event of a missing or complex failure.

Therefore, in order to solve the above problems, the present invention further comprises a remote diagnosis server connected to a wireless LAN system and a network, so as to diagnose and solve a failure through data communication with a wireless LAN service user. Proposed protocol to perform fault diagnosis and troubleshooting at a remote location to provide users with faster failover service, and the service provider's diagnostic methods and diagnostic protocols to make it easier for service providers to maintain WLAN system services. The purpose is to provide.

In order to solve the above technical problem, a wired diagnostic method of a wireless LAN system according to an aspect of the present invention,

Diagnosing abnormalities of the wireless LAN system including a wireless terminal having a wireless communication function and an access point (AP) for wireless communication, and diagnosing the wireless LAN system by wire in a diagnosis server connected to a network to solve the problem. A method comprising: (a) receiving an abnormal report of a wireless LAN service from a user of the wireless terminal, the diagnostic server obtaining user information from the user, and determining a connection state with the AP; (b) checking the connection between the AP and a service server for providing a wireless LAN service when the connection with the AP is normal; (c) if the connection between the AP and the service server is normal, the diagnosis server sends a setting information request message to the AP, and receives setting information to determine whether the setting is normal; (d) if the setting information of the AP is normal, determining whether the user is registered in the access list of the AP, and checking whether the channel of the AP is normal; And (e) if an error occurs in steps (b), (c), and (d), the diagnostic server includes a step of solving the problem.

At this time, if the connection between the AP and the service server for providing the wireless LAN service is not normal in step (b), it is characterized in that the problem is notified to the system operator to solve the problem.

In addition, if the configuration information of the AP is not normal in the step (c), the diagnostic server is characterized by modifying the configuration information of the AP by sending a configuration information change message to the AP.

And, if the user is not registered in the access list of the AP in the step (d), registering the user; And setting the normal channel by transmitting a channel change message to the AP when the channel of the AP is not normal.

Wireless diagnostic method of a wireless LAN system according to an aspect of the present invention,

Diagnostic wireless terminal capable of wireless communication using a specific diagnostic protocol to diagnose an abnormality and solve a problem by wireless communication using the AP (Access Point) and the specific diagnostic protocol of the wireless LAN system for the diagnosis of a wireless LAN system. A wireless diagnostic method for a wireless LAN system, the method comprising the steps of: (a) scanning a diagnostic AP using a specific protocol, searching for a diagnostic AP, and accessing the diagnostic AP to obtain read / write rights; (b) the diagnostic wireless terminal reading a parameter of the diagnostic AP and rewriting a problem parameter value; (c) when the diagnostic wireless terminal finishes writing the parameter, releasing a connection with the corresponding diagnostic AP; And (d) rebooting the diagnostic AP having the newly written parameter by the diagnostic wireless terminal.

In this case, when the diagnostic wireless terminal does not know the IP address of the diagnostic AP, the method may further include obtaining an IP address of the diagnostic AP by broadcasting an AP scan message.

The diagnostic wireless terminal transmits a message to the diagnostic AP and retransmits a message having the same content after a predetermined time.

A diagnostic protocol according to one aspect of the invention,

A diagnostic protocol for wireless communication used for diagnosing and solving a problem of an AP in a WLAN system, the diagnostic protocol comprising: an AP scan request message and an AP scan response message for scanning and finding the AP; An access acquisition request message and an access acquisition response message for accessing the AP; An access maintenance request message and an access maintenance response message for maintaining a connection with the AP after being connected with the AP; A read / write request message and a response message for accessing the AP, reading parameters of the AP, and correcting wrong parameters; An access release message for releasing a connection after finishing reading / writing to the AP; And a reboot request message and a reboot response message for rebooting the AP to apply the parameter newly set by the AP through read / write.

In this case, each message may include a sender address field indicating an address of a sender for transmitting the corresponding message; A receiving side address field indicating an address of a receiving side receiving the message; A message type field indicating what kind of message the message is; A reception type field indicating whether the message is a broadcast message or a unicast message; A sequence number field indicating a transmission sequence number of the message; An error code field indicating that an error has occurred as a result of performing an operation on the request message; A payload field indicating content including a value of a parameter included in a corresponding message; And an error check field for checking whether an error occurs in the header and the payload field of the message.

The content of the error code field may include: an AP scan success code indicating that the scan of the AP is successful; A read / write permission acquisition success code indicating that read / write permission has been successfully obtained to the AP; A read / write permission acquisition failure code indicating that a read / write permission has not been obtained for the AP; A read / write permission already grant code indicating that there is another radio terminal to which the AP has already granted read / write permission; A reboot success code indicating that the reboot of the AP has started normally; A reboot failure code indicating that a reboot of the AP has failed; A no reboot right code indicating no right to reboot the AP; A read / write success code indicating that read / write of the parameters of the AP has been successfully performed; A timeout code indicating that the connection has been released while reading / writing the parameters of the AP; A read / write error code indicating that a parameter requested for writing to the AP is an invalid value; A parameter error code indicating that a parameter requested for writing to the AP is not recognized by the corresponding AP; Read-only code indicating that the parameter can only be read by the AP; And a non-supportable code indicating that a write request is made for a parameter not supported by the version of the AP.

A recording medium according to another aspect of the present invention,

Diagnosing abnormalities of the wireless LAN system including a wireless terminal having a wireless communication function and an access point (AP) for wireless communication, and diagnosing the wireless LAN system by wire in a diagnosis server connected to a network to solve the problem. A recording medium storing a program including a function, the method comprising: (a) receiving an abnormality report of a wireless LAN service from a user of the wireless terminal, and the diagnostic server obtains user information from the user, and checks the connection state with the AP. Judging function; (b) a function of confirming a connection between the AP and a service server for providing a wireless LAN service when the connection with the AP is normal; (c) a function of determining whether the setting is normal by receiving setting information by transmitting a setting information request message to the AP when the connection between the AP and the service server is normal; (d) determining whether the user is registered in the access list of the AP when the configuration information of the AP is normal and confirming whether the channel of the AP is normal; And (e) a function of solving a problem caused by the diagnosis server when an error occurs in the functions (b), (c), and (d).

A recording medium according to another aspect of the present invention,

Diagnostic wireless terminal capable of wireless communication using a specific diagnostic protocol to diagnose an abnormality and solve a problem by wireless communication using the AP (Access Point) and the specific diagnostic protocol of the wireless LAN system for the diagnosis of a wireless LAN system. In a recording medium storing a program having a wireless diagnostic function of the wireless LAN system, (a) the diagnostic wireless terminal scans the diagnostic AP by using a specific protocol, and accesses the diagnostic AP to obtain read / write rights Function; (b) the diagnostic wireless terminal reading a parameter of the diagnostic AP and rewriting a problem parameter value; (c) when the diagnostic wireless terminal finishes writing the parameter, disconnecting the connection with the corresponding diagnostic AP; And (d) rebooting the diagnostic AP having the newly written parameter by the diagnostic wireless terminal.

As described above, the diagnostic method and diagnostic protocol of the wireless LAN system according to the present invention, a remote diagnostic server that can diagnose the wireless LAN system from a remote location in order to diagnose the wireless LAN system and to solve the problem, wireless As a result, the WLAN protocol manager can easily and quickly solve the problem by providing a diagnostic protocol for diagnosing and solving the AP.

1 is a block diagram showing the structure of a wireless LAN system according to an embodiment of the present invention.
2 is an operation flowchart of a wired diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.
3 is an operation flowchart of a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention.
4 is a signal flowchart illustrating an AP scan process in a wireless diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.
5 is a signal flow diagram illustrating a write / read process of an AP in a wireless diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.
6 is a signal flowchart illustrating a process of maintaining a session in a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention.
7 is a signal flowchart illustrating a read / write process in a wireless diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.
8 is a signal flowchart illustrating a write permission release process in a wireless diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.
9 is a signal flowchart illustrating an AP rebooting process in a wireless diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms “… unit”, “… unit”, “module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have.

A diagnostic method and a diagnostic protocol of a wireless LAN system according to an exemplary embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the structure of a wireless LAN system according to an embodiment of the present invention.

Referring to FIG. 1, a wireless LAN system for providing a wireless LAN service to a wireless terminal 100 capable of wireless LAN communication may include an access point (AP) 200, a local area network (LAN) 300, and a diagnostic server ( 400).

In addition, the diagnostic management wireless terminal 500 for the management diagnosis of the wireless LAN system through a wireless communication.

The wireless terminal 100 is a terminal capable of performing wireless LAN communication, and may use various wireless LAN services.

The AP 200 is a device that serves as a base station for wireless communication with the wireless terminal 100 and is connected to the LAN 200 to enable a wireless LAN service.

In addition, the diagnostic server 400 is a server that collects quality measurement information in the normal communication state between the AP 200 and the wireless terminal 100, and diagnoses the AP and terminal information remotely when a problem occurs.

The diagnostic server 400 may remotely diagnose a failure through the wired AP 200 at the request of the user that the wireless LAN service is abnormal and use the service, and determine the current situation. 200) should operate normally.

In addition, the management wireless terminal 500 when the diagnostic server 400 is not known whether the AP 200 is abnormal, and when diagnosing the failure of the AP 200 and to recover from the failure, the corresponding AP ( In case of difficulty in accessing 200, communication and diagnosis management with the AP 200 having an error may be performed using a diagnosis management protocol.

A method for managing and managing a wireless LAN system according to an embodiment of the present invention having the above structure is as follows.

2 is an operation flowchart of a wired diagnostic method of a wireless LAN system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, when the user feels an abnormality in using the wireless LAN service (S201), the user is notified of the abnormality through a telephone or the like.

In addition, the WLAN system may also diagnose its own service abnormality (S201), and the diagnosis server 400 may start a system diagnosis.

The diagnosis server 400 obtains user information from the user's wireless terminal 100 through a communication network, or the service representative directly obtains the user information from the user and inputs the user information to the diagnosis server 400 (S202).

In this case, the user information includes the user's name, address, and phone number information, including information of the user's wireless terminal 100, MAC address information of the AP 200 to which the wireless terminal 100 is currently connected, and the like. do.

For the first time for diagnosis, it is determined whether the user's wireless terminal is abnormal. This can be solved by the person in charge directly checking the physical state of the wireless terminal 100 such as power supply and cable connection state (S204). .

If there is no abnormality in the wireless terminal in step S203, the diagnostic server 400 determines the connection status with the AP 200 and the presence or absence of the AP.

That is, the diagnosis server 400 determines whether the connection with the AP 200 is normally performed by wire (S205). If the diagnosis server 400 is not normally connected with the AP 200, the diagnosis server 400 is difficult to diagnose by wire. In step S206, the AP 200 is wirelessly diagnosed and managed using the AP 200. A method of diagnosing and managing the AP 200 wirelessly will be described in detail with reference to FIG. 3.

If the diagnostic server 400 is connected to the AP 200 by wire, the diagnostic server 400 uses the MAC address and IP address information of the AP 200 obtained in step S202 to determine the corresponding AP 200. It is determined through the ping test whether it is normal (S207).

If a normal result does not come out as a result of the ping test, the diagnostic server 400 notifies the service representative, and the service representative checks the physical state including a cable connection state, a power supply state, etc. of the corresponding AP 200 (S208). ).

If the ping test result is normal, this time, the AP 200 checks whether a connection between the Dynamic Host Configuration Protocol (DHCP) server and the Remote Authentication Dial ?? In User Service (RADIUS) server is provided. If an abnormality is found (S209), the system engineer processes the abnormality (S210). The connection confirmation and abnormality processing of the DHCP server, the RADIUS server, and the AP 200 may use a method used in a conventional Asymmetric Digital Subscriber Line (ADSL) or Very High Data Rate DSL (VDSL), and thus detailed description thereof will be omitted. do.

In addition, the diagnosis server 400 checks the setting of the corresponding AP 200 (S211). Since the diagnostic server 400 has a protocol for viewing the setting of the AP 200 through communication with the AP 200, the diagnosis server 400 may check the setting information of the AP 200 and correct an incorrect part (S212). .

At this time, the setting of the AP 200 to be checked by the diagnostic server 400 checks the SSID (Service Set IDentifier) to determine whether the ID of the corresponding WLAN service is properly set, and the MAC address of the AP 200 is set. Check to see if it is an authenticated AP 200.

When the setting of the AP 200 is normal, the diagnosis server 400 checks whether the MAC address of the NIC (Network Interface Card) of the user's wireless terminal belongs to the access list of the corresponding AP 200 (S213). If there is no MAC address of the NIC of the corresponding wireless terminal 100 in the access list, or corrects it (S214), if the MAC address of the NIC of the corresponding wireless terminal 100 is normally in the access list, the wireless terminal 100 You can determine that the NIC is not working properly.

If there is no NIC abnormality of the wireless terminal 100, the AP 200 checks whether the channel being set is a valid channel (S215), performs normal channel setting (S216), and finally determines whether the user terminal has an abnormal setting. Check again with (S217), change the setting (S218), and make a diagnosis.

If the problem is not confirmed or solved by the above-mentioned problem solving method, the service representative directly tests the system to determine the abnormality, or through the test using the diagnostic protocol between the AP 200 and the diagnostic management wireless terminal 500 to determine the abnormality. I can solve it.

3 is an operation flowchart of a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention.

Referring to FIG. 3, first, it is assumed that the diagnostic management wireless terminal 500 and the AP 200 are configured to communicate by a diagnostic protocol.

In addition, when the service representative is not able to diagnose the AP 200 by wire, the AP 200 scans the AP 200 to be diagnosed using the diagnosis management wireless terminal 500 (S301).

In this case, the reason for scanning the AP 200 is limited to the case where the IP address of the AP 200 is not known. If the IP address of the AP 200 is known, the scanning process may be omitted.

When the IP address of the corresponding AP 200 is obtained, the diagnostic management wireless terminal 500 may access the AP 200 (S302), read setting information of the AP 200, and write correct information (S303). . In addition, the AP 200 and the diagnostic management wireless terminal 500 transmits and receives a connection maintenance message to maintain the connection.

After the setting of the AP 200 is normally performed, the diagnostic management wireless terminal 500 releases write permission with the AP 200 (S304), reboots the AP 200 (S305), and operates normally. do.

At this time, the protocol used for communication between the diagnostic management wireless terminal 500 and the AP 200 is defined as follows.

4 is a signal flow diagram illustrating an AP scan process in a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention, and FIG. 5 is a process of accessing an AP in a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention. 6 is a signal flowchart illustrating a process of maintaining a session in a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention.

7 is a signal flowchart illustrating a read / write process in a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention, and FIG. 8 is a write right in a wireless diagnostic method of a wireless LAN system according to an embodiment of the present invention. 9 is a signal flowchart illustrating a release process, and FIG. 9 is a signal flowchart illustrating an AP rebooting process in a wireless diagnosis method of a wireless LAN system according to an exemplary embodiment of the present invention.

Referring to FIG. 4, first, when the diagnostic management wireless terminal 500 does not know the IP address of the AP 200, a message format for finding an IP address through the AP 200 scan is shown.

The diagnostic management wireless terminal 500 transmits an AP Scan Request message (APScanRequest PDU; Protocol Data Unit) to the public in order to find an accessible AP 200 and a timer to check whether a response comes within a predetermined time. In operation S402, if there is no response within a predetermined time, the AP scan request message is transmitted again (S403).

The AP 200 receiving the AP scan request message from the diagnostic management wireless terminal 500 broadcasts an AP scan response message (APScanResponse PDU) (S404), and the diagnostic management wireless terminal 500 receives the AP. IP address of the 200 can be known.

At this time, the AP scan response message is that only the AP 200 actually connected to the diagnostic management wireless terminal 500 is directly transmitted wirelessly, and the AP scan response message from other APs 200 around the corresponding AP 200. ) Is received by wire and transmitted wirelessly.

When the IP address of the AP 200 is confirmed as described above, the diagnostic management wireless terminal 500 accesses the AP 200.

Referring to FIG. 5, the diagnostic management wireless terminal 500 transmits an access acquisition request message (AccessGainRequest PDU) to access the AP 200 in order to read and write various parameters (S501), and whether a response for a predetermined time comes. The timer is operated to confirm (S502).

If there is no response for a predetermined time, the access acquisition request message is transmitted again (s503), and an access acquisition response message (AccessGainResponse PDU) is received from the AP 200 and the corresponding AP 200 is accessed (S504).

In this case, the access acquisition request message may be transmitted by broadcast or unicast. If there is no AP scanning process as shown in FIG. 4, that is, the IP address of the corresponding AP 200 is correctly known, the access acquisition request message is transmitted by unicast. .

In addition, the access acquisition response message is also transmitted by broadcast or unicast in the same manner as the access acquisition request message is transmitted.

In addition, the access acquisition request message includes ID / password information of the administrator for inhibiting the access right to enable access acquisition.

In addition, since the diagnostic management radio terminal 500 can read / write various parameters to the AP 200 in the state of maintaining the connection, and for this purpose, the connection needs to be maintained for transmission and reception of messages.

Referring to FIG. 6, the diagnostic management radio terminal 500 and the AP 200 transmit an access maintenance request message (AccessMaintainRequest PDU) to maintain a connection between them (S601), and by a timer operation (S602, S604). If out, the access maintenance request message is transmitted again (S603).

In addition, the diagnostic management wireless terminal 500 or the AP 200 receiving the access maintenance request message transmits an access maintenance response message (AccessMaintainResponse PDU) to each other (S605).

The diagnostic management wireless terminal 500 may read various parameters of the AP 200 and rewrite the parameters so that the AP 200 normally operates.

Referring to FIG. 7, in order to read / write the parameters of the AP 200, the diagnostic management wireless terminal 500 transmits a read / write request message (GetRequest / SetRequest PDU) to the AP 200 to read / write ( In step S701, a response message (Response PDU) is received from the AP 200 (S704). In addition, the diagnostic management radio terminal 500 operates a timer to retransmit if a response to the read / write request message does not come within a predetermined time (S702), and retransmits after a predetermined time (S703).

After the diagnostic management wireless terminal 500 writes all parameters to the AP 200, the read / write permission is released. Referring to FIG. 8, the diagnostic management wireless terminal 500 generates an access release request message (AccessReleaseNotify PDU). The read / write permission is released by transmitting (S801).

After the diagnostic management wireless terminal 500 rewrites the parameters of the AP 200 as described above, the AP 200 needs to be rebooted so that the AP 200 can operate in a new environment.

Referring to FIG. 9, the diagnostic management radio terminal 500 transmits a reboot request message (APRebootRequest PDU) to the AP 200 (S901), and the AP 200 transmits a reboot response message (APReootResponse PDU) to the diagnostic management radio terminal. Send to 500 and respond (S904) and reboot.

In addition, the diagnostic management wireless terminal 500 operates a timer to check whether a response to the reboot request message is received within a predetermined time (S902), and if it does not receive the reboot response message from the AP 200 within a predetermined time, it again. The reboot request message is transmitted (S903).

The message transmitted and received between the AP 200 and the diagnostic management wireless terminal 500 in the wireless diagnostic process according to the features of the present invention described above is a message defined by the diagnostic protocol according to an embodiment of the present invention as a basic message (PDU). The format of is as follows.

The message of the diagnostic protocol has a format as shown in Table 1 above, and types of messages are classified by PDU type.

PDU types are classified as follows.

As shown in Table 2, the type of the message is determined by the PDU type, and in the case of the AP scan request message, AP scan response message, access acquisition request message, and access acquisition response message, broadcast or unicast is possible. When the management wireless terminal 500 transmits by broadcast, the AP 200 also transmits a response message by broadcast. When the diagnostic management wireless terminal 500 transmits a message by unicast, the AP 200 also unicast. Send a response message.

Therefore, in order to be able to determine the broadcast and unicast of the message, the reception type field of Table 1 is defined.

In addition, the sequence numbers in Table 1 are allocated for the purpose of checking whether the parameter values between the AP 200 and the diagnostic management wireless terminal 500 are sequentially consistent. Basically, the sequence numbers increase each time a message is sent one by one. do.

In this case, even when the request message is retransmitted without receiving the response message for a predetermined time, the sequence number is increased by one, and the sequence message in the corresponding request message is used as it is.

In addition, when a request message having a sequence number to which the AP 200 has already transmitted a response message is received again, the request message is ignored.

The error codes in Table 1 are used only in the response message. They are used to indicate an error in the operation of the request message and may indicate the following.

As shown in Table 3, an error code may be classified into an AP scan, a control part related to access control (access acquisition and rebooting), and a data conversion related to a read / write request (read / write).

The error in the control part can be specified as one code, but in the part related to data conversion, there can be a plurality of parameters in one message, and an error code for each is required. .

That is, the error code field of the header indicates whether there is a parameter in which an error has occurred, and the specific error state uses an information field of each parameter element. At this time, an error code is indicated in Table 3 as '02 / 00 'in the field of each parameter.

For this purpose, the following error map parameter elements are defined.

In addition, the index of the parameter element in the information field is as follows.

The payload contains various contents of the corresponding message. The contents of the payload may be very absent or may be composed of one or more parameter element fields. The parameter element fields have the following format.

In addition, the type of parameter may be defined and used for each manufacturer or each carrier of the AP 200.

Although a preferred embodiment of the present invention has been described in detail above, the present invention is not limited thereto, and various other changes and modifications are possible.

An embodiment of the present invention is not implemented only through the above-described apparatus and / or method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded, and the like. In addition, such an implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (7)

Diagnostic wireless terminal capable of wireless communication using a specific diagnostic protocol to diagnose an abnormality and solve a problem by wireless communication using the AP (Access Point) and the specific diagnostic protocol of the wireless LAN system for the diagnosis of a wireless LAN system. In the wireless diagnostic method of the wireless LAN system,
(a) the diagnostic wireless terminal scanning and finding a diagnostic AP using a specific protocol, and accessing the diagnostic AP to obtain read / write rights;
(b) the diagnostic wireless terminal reading a parameter of the diagnostic AP and rewriting a problem parameter value;
(c) when the diagnostic wireless terminal finishes writing the parameter, releasing read / write permission with the corresponding diagnostic AP; And
(d) rebooting the diagnostic AP having the newly written parameter by the diagnostic wireless terminal;
Wireless diagnostic method of the WLAN system comprising a. The method of claim 1,
And if the diagnostic wireless terminal does not know the IP address of the diagnostic AP, acquiring an IP address of the diagnostic AP by broadcasting an AP scan message. The method of claim 2,
The diagnostic wireless terminal transmits a message to the diagnostic AP and, after a predetermined time, retransmits a message having the same contents. In the diagnostic protocol for wireless communication used to diagnose the problem of the AP of the wireless LAN system, and to solve the problem,
An AP scan request message and an AP scan response message for scanning and finding the AP;
An access acquisition request message and an access acquisition response message for accessing the AP;
An access maintenance request message and an access maintenance response message for maintaining a connection with the AP after being connected with the AP;
A read / write request message and a response message for accessing the AP, reading parameters of the AP, and correcting wrong parameters;
An access release message for releasing read / write permission after finishing reading / writing to the AP; And
A reboot request message and a reboot response message for rebooting the AP to apply the parameter newly set by the AP through read / write.
Diagnostic protocol comprising a. The method of claim 4, wherein
Each message above,
A sender address field indicating an address of a sender for transmitting the message;
A receiving side address field indicating an address of a receiving side receiving the message;
A message type field indicating what kind of message the message is;
A reception type field indicating whether the message is a broadcast message or a unicast message;
A sequence number field indicating a transmission sequence number of the message;
An error code field indicating that an error has occurred as a result of performing an operation on the request message;
A payload field indicating content including a value of a parameter included in a corresponding message; And
Error check field to check if error occurs in header and payload fields of the message
Diagnostic protocol comprising a. The method of claim 5,
The content of the error code field is
An AP scan success code indicating that the scan of the AP is successful;
A read / write permission acquisition success code indicating that read / write permission has been successfully obtained to the AP;
A read / write permission acquisition failure code indicating that a read / write permission has not been obtained for the AP;
A read / write permission already grant code indicating that there is another radio terminal to which the AP has already granted read / write permission;
A reboot success code indicating that the reboot of the AP has started normally;
A reboot failure code indicating that a reboot of the AP has failed;
A no reboot right code indicating no right to reboot the AP;
A read / write success code indicating that read / write of the parameters of the AP has been successfully performed;
A timeout code indicating that the connection has been released while reading / writing the parameters of the AP;
A read / write error code indicating that a parameter requested for writing to the AP is an invalid value;
A parameter error code indicating that a parameter requested for writing to the AP is not recognized by the corresponding AP;
Read-only code indicating that the parameter can only be read by the AP; And
Unsupported code indicating that a request was made to write a parameter not supported by the version of the AP.
Diagnostic protocol comprising a. Diagnostic wireless terminal capable of wireless communication using a specific diagnostic protocol to diagnose an abnormality and solve a problem by wireless communication using the AP (Access Point) and the specific diagnostic protocol of the wireless LAN system for the diagnosis of a wireless LAN system. In the recording medium storing a program having a wireless diagnostic function of the wireless LAN system for
(a) the diagnostic wireless terminal scanning a diagnostic AP using a specific protocol to find the diagnostic AP, and accessing the diagnostic AP to obtain read / write rights;
(b) the diagnostic wireless terminal reading a parameter of the diagnostic AP and rewriting a problem parameter value;
(c) when the diagnostic wireless terminal finishes writing the parameter, releasing read / write permission with the corresponding diagnostic AP; And
(d) a function of rebooting a diagnostic AP having newly written parameters by the diagnostic wireless terminal;
The recording medium in which the program is stored.

Images