JP5555878B2 - Wireless communication system and diagnostic method thereof - Google Patents

Description

  The present invention relates to a configuration of a wireless communication system using a general terminal owned by a subscriber and a diagnostic method.

  In addition to conventional wired communication networks, introduction of wireless communication networks (hereinafter referred to as wireless communication systems) using wireless terminals and wireless communication devices is in progress. In a wireless communication system, in addition to time division multiple access (TDMA) communication in which signals such as voice are time-division multiplexed, CDMA (code division multiple access) in which signals such as voice are code-multiplexed with spreading codes are used for communication. Communication has become widespread and it has become possible to communicate with anyone at any time, anywhere. In order to further spread such wireless communication systems, wireless terminals (hereinafter referred to as terminals in this specification) of users (also referred to as subscribers or users) whose number of system providers are increasing are connected. In addition to the need to increase the number of wireless communication devices, the contents of communication services provided by the communication system are evolved by appropriately updating software and hardware of already installed wireless communication devices and other communication devices. It is necessary to increase it.

  In a wireless communication system in which equipment is added and updated as described above, a new one is added each time equipment is added or updated to ensure system reliability, safety, and service provision capability (hereinafter referred to as serviceability). Diagnosis technology (maintenance technology) for confirming the normality of the configured radio communication system is indispensable. Of course, in order to ensure reliability, safety, and serviceability even during normal operation other than when equipment is added or updated, periodic diagnosis and maintenance including preventive maintenance is required. For this reason, various configurations and diagnostic methods for wireless communication systems have been proposed (see, for example, Patent Document 1).

JP 2006-060762 A

  In a wireless communication system, communication with a wireless terminal is performed in an area called a cellular within a range where radio waves of a base station that is a wireless communication apparatus reach, and a cellular having a radius of about several kilometers is generally used. That is, since the number of users and the coverage area to be accommodated are extremely small compared with the conventional wired communication network (switching network), it is necessary to arrange a large number of these base stations in order to provide a communication service in a wide range. For this reason, in a method in which maintenance personnel are dispatched in the cellular area around the base station and a terminal or test machine is brought in to diagnose the communication network, significant human resources are used, resulting in an increase in the cost of maintaining the communication system. Since this affects the usage fee of the user, remote / automatic diagnosis from a maintenance center or the like is desired.

  In addition, with the increase in the number of subscribers and the diversification of service contents accompanying the improvement in terminal performance, the diagnosis contents are not only confirmed from communication between the test terminal and the wireless communication apparatus, but also from a plurality of terminals and wireless communication apparatuses. Performance evaluation test (for example, evaluation test of average / maximum throughput, call connection success rate, maximum number of simultaneous simultaneous call connections) as a configured wireless communication system, and a phenomenon in which only a specific terminal has poor wireless performance (for example, It is required to be able to analyze (such as long call connection required time, low call connection success rate, voice / data transfer interruption).

  In the diagnosis method of Patent Document 1, the maintenance center automates diagnosis of a wireless communication device by instructing a terminal equipped with a diagnosis application via a communication network to execute the diagnosis application. It is necessary to install a terminal equipped with a diagnostic application in the cellular to be diagnosed. For this reason, if you want to add a terminal, change the location of the terminal, or change the terminal to another model, the telecommunications carrier prepares a test terminal each time, It is necessary to dispatch to the station cellular. In particular, since a large amount of cost is required to install a number of terminals corresponding to the maximum number of simultaneous call connections per cellular, the diagnostic method of Patent Document 1 is not suitable.

  In addition, in order to perform diagnosis on a moving terminal, it is necessary to dispatch a maintenance staff possessing a diagnostic terminal to the cellular to move at a specified speed in the same way as in the conventional method. The advantage of automatic execution is not utilized. In addition, the maintenance center always confirms that the diagnosis start condition is satisfied in order to execute diagnosis when all of the multiple diagnosis start conditions (for example, cellular congestion, terminal wireless status, etc.) are satisfied. In addition, it is necessary to manually instruct the execution of diagnosis immediately without missing the opportunity that the condition is satisfied.

  The wireless communication device can be diagnosed remotely without introducing special devices in the wireless communication system and without dispatching maintenance personnel to the cellular network, and the diagnosis start condition can be reserved and satisfied. In such a case, it is required to provide a configuration of a wireless system having an excellent diagnosis capability capable of automatically starting diagnosis and a method for diagnosis thereof.

  General-purpose terminals generally used in wireless communication systems are, for example, communication services such as “i-appli”, a registered trademark of NTT DoCoMo, Inc. or “EZ appli”, a registered trademark of KDDI Corporation. In order to apply, an application program (hereinafter referred to as AP) arbitrarily set on the terminal using an operating system (hereinafter referred to as OS) and an application platform (hereinafter referred to as APPF) provided in the terminal, It has a function that can be executed via a communication network. The present invention pays attention to this and constructs a wireless communication system in which a program for executing diagnosis of a wireless communication network (particularly, a wireless communication device) is provided in a general-purpose terminal, and performs the above-described problem. To solve the problem.

  Specifically, in the wireless communication system of the present invention, a terminal equipped with a diagnostic AP is used as a general-purpose terminal capable of executing an AP via a communication network used in a general wireless communication system. When the maintenance center of the wireless communication system activates the terminal, the terminal executes a diagnostic AP and communicates diagnostic control signals and test signals with the maintenance center, thereby executing diagnosis of the wireless communication system. For diagnosis, in addition to a dedicated terminal prepared by the maintenance person, a general terminal owned by the subscriber can be used. In the maintenance center of the wireless communication system, a plurality of diagnosis start conditions (for example, base station installation area, weather conditions, date, time, cellular congestion, terminal location from the cellular center, terminal type, terminal wireless state, You can set the terminal movement speed, the number of terminals that can be diagnosed at the same time, etc., and automatically start diagnosis without missing the timing by periodically checking whether the diagnosis start conditions are satisfied .

  More specifically, after identifying a diagnostic terminal within the radio wave reach of the wireless communication device (ie, base station), the diagnostic program of the maintenance center of the wireless communication system activates the terminal. The terminal activated thereby measures the communication state of the wireless communication system such as signal delay and speed in the process of executing the diagnostic AP and communicating the diagnostic control signal and the test signal with the maintenance center. The diagnosis terminal notifies the maintenance center of the actual measurement result as described above, thereby diagnosing the wireless communication system. The connection between the terminal and the maintenance center is established when the diagnostic AP is activated, and is opened when the diagnostic AP is terminated, in the same manner as when a general-purpose terminal executes an AP for communication with other terminals. Is done.

  The diagnostic terminal within the radio wave reach of the wireless communication device transmits / receives diagnostic control signals and test signals to / from the maintenance center to measure the communication state of the wireless communication system, and the actual measurement result at the terminal is used as the maintenance center. It was set as the radio | wireless terminal provided with AP notified to.

  A typical embodiment of the present invention is as follows. That is, a plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within the radio wave reach of any one of the wireless communication devices, and each wireless terminal via each wireless communication device A wireless communication system comprising: a maintenance device for communication, wherein each of the wireless terminals includes a first program for controlling communication with an opposite device via at least one wireless communication device; and the wireless communication system. A second program that controls communication with the maintenance device for diagnosis, the maintenance device holds a diagnosis start condition, and at least one of the plurality of wireless terminals has the diagnosis start condition If it is determined that the second program is satisfied, the wireless terminal transmits an activation instruction for the second program to at least one of the plurality of wireless terminals, and the wireless terminal that has received the activation instruction receives the second program. By performing the beam, said diagnose a wireless communication system, and transmits the information indicating the result of diagnosis of the wireless communication system in the maintenance device.

  Since maintenance of the wireless communication device can be performed remotely using a general-purpose terminal owned by the subscriber without changing the facilities used in the general wireless communication system, the maintenance staff places the test terminal in the base to be diagnosed. There is no need to install a terminal in the cellular station of the station, and the radio communication system and the diagnostic method thereof can be realized with a simpler and more economical configuration and procedure than in the past. For example, it is possible to easily execute a cellular performance evaluation test (for example, an evaluation test of average / maximum throughput, call connection success rate, maximum simultaneous call connection possible number) using a large number of terminals simultaneously.

  Furthermore, a plurality of diagnosis start conditions (for example, base station installation area, weather conditions, date, time, cellular congestion, terminal location from the cellular center, terminal type, terminal radio, etc.) Status, terminal movement speed, number of terminals that can be diagnosed at the same time, etc.). Automatic start can be realized.

1 is a system configuration diagram illustrating a configuration example of a wireless communication system. It is a block diagram which shows the structural example of the terminal for a diagnosis. It is a block diagram which shows the structural example of a radio | wireless communication apparatus (base station BS). It is a block diagram which shows the structural example of a base station control station (BSC). It is a block diagram which shows the structural example of a maintenance center. It is a sequence diagram which shows the operation example of a radio | wireless communications system. It is a flowchart which shows the structural example of AP for a diagnosis of a terminal. It is a flowchart which shows the structural example of the diagnostic program with which the maintenance center was equipped. It is a sequence diagram which shows the example of a diagnostic operation between a terminal and a maintenance center. It is a memory block diagram which shows the structural example of the diagnostic relevant data memorize | stored in memory of a terminal. It is a memory block diagram which shows the structural example of the diagnostic relevant data memorize | stored in the memory of a maintenance center, or a server. It is a sequence diagram which shows the example of the process which determines a diagnosis start based on a diagnosis start condition. It is a sequence diagram which shows another example of the process which determines a diagnosis start based on a diagnosis start condition.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wireless communication system that mainly provides packet communication with reference to the drawings and embodiments of the configuration of the wireless communication system of the present invention, the diagnosis method thereof, the configuration of a terminal device used for diagnosis of the wireless communication system, and the like. An example will be described in detail.

  FIG. 1 is a system configuration diagram illustrating a configuration example of a wireless communication system. The wireless communication system 1 includes a base station (hereinafter referred to as BS) 20 that is a wireless communication device that communicates with the terminal 50, and a PSTN / Internet (hereinafter collectively referred to as BS) and another communication network. And a base station controller (hereinafter referred to as BSC) 30 that manages and controls the BS 20 and the maintenance and management of the wireless communication system 1 connected to the BSC 30 and the PSTN 40. And a maintenance center 60 for performing

  Each of the plurality of BSs 20-1 to 20-n is wirelessly connected to a plurality of terminals 50-1-1-1 to 50-n-1 existing in the wireless radio wave reachable areas called cellular 10-1 to n. In addition, each cellular may be further divided into small areas called sectors 10-1-1-1 to be operated. Each terminal 50 includes a data terminal PC51, a telephone terminal tel., And the like connected to the PSTN 40 via the BS 20, the BSC 30, and the PSTN 40. 52 and the Internet service provider (ISP) server 53, weather information server 54, etc., are connected to various terminals such as data and voice (communication). The radio technology used in the cellular 10 may be any radio technology such as TDMA / CDMA / FDMA.

  Terminals 55 (55-1, 55-2, 55-n-1 and 55-n) arranged in each cellular 10 are diagnostic terminals having a function for realizing the diagnostic method of the wireless communication system according to the present invention. Thus, the diagnostic terminal is obtained by adding the diagnostic function of the wireless communication system 1 to the commonly used terminal 50. As will be described later, the terminal 55 is connected to the maintenance center 60 via the BS 20, the BSC 30, and the PSTN 40, and wirelessly communicates between the terminal 55 and the maintenance center 60 (transmission and reception of control signals and test signals). The communication system 1 is diagnosed. These diagnostic terminals 55 are provided with the same telephone numbers and mail addresses as those of the general terminals 50 as shown in the figure. The diagnostic terminal 55 is a general-purpose terminal (55-1 and 55-n) prepared by a maintenance person, or a general-purpose terminal owned by a subscriber (55-2 and 55-n-1) equipped with a diagnostic AP. is there.

  FIG. 2 is a block diagram illustrating a configuration example of the diagnostic terminal 55. FIG. 2A is a block diagram showing the hardware configuration of the terminal 55, which is the same configuration as the general terminal 50. Specifically, an antenna 500 that transmits and receives a radio signal, an RF unit 510 that converts a radio signal into an electric signal, a communication processing unit 520 that performs predetermined communication processing (signal termination, protocol conversion, failure monitoring, etc.) on the electric signal, The peripheral device unit 530 performs input / output of signals transmitted / received by the terminal owner, and the control unit 540 controls the entire terminal 55. The peripheral display unit 530 includes a microphone 531 that inputs sound, a speaker 532 that outputs sound, a display 533 that displays characters and images, and a key 534 that performs data input and control signal input (such as designation of a connection destination). It is done. The control unit 540 includes a CPU 550 that is a processor that controls the operation of the entire terminal 55, an MM 560 that is a memory that stores operation programs and various data necessary for the operation, and an I / O 570 that transmits and receives signals to and from external devices. Provided. The control line 580 connects the blocks described above. Although not shown, this terminal 55 is usually installed at a predetermined position in the cellular 10 and is connected to a specific cellular (or sector). In addition, it is operated in a state where it can be operated by constant power supply (of course, it can be moved).

  The terminal 55 is a terminal using a general terminal 50, and the MM 560 is equipped with a program for diagnosing the wireless communication system 1, and the CPU 550 can execute the program to perform diagnosis of the wireless communication system 1 as described later. Terminal.

  FIG. 2B is a block diagram showing the software configuration of the terminal 55, which is almost the same configuration as the general terminal 50.

  The general wireless terminal 50 includes a terminal OS 541 and an APPF 542, and various APs 534 operate on the OS 541 and APPF 542 to realize various communication services. For example, AP1 (543-1) is an application program such as weather forecast and AP2 (543-2) is a game, and the owner of the terminal appropriately operates the peripheral unit 530 to select a desired program. The program is operated via the wireless communication system 1 to receive a communication service. The terminal 55 of the present invention installs a diagnostic application program APp (543-p), which will be described in detail below, in such a terminal, and executes diagnosis of the wireless communication system 1 in conjunction with the maintenance center 60. It is going. Note that APp (543-p) is set by setting the terminal 55 in advance in the maintenance center 60 or the like and installing the terminal at a predetermined position in the cellular 10 or downloading the program after installing the terminal 55 in the cellular 10. You can set either.

  One of the above application programs (for example, AP1 (543-1) or AP2 (543-2)) is a program for the terminal 55 to communicate with other terminals 55 and the like via the BS 20 and the like. Also good. By executing such an application program, the terminal 55 performs, for example, communication with another terminal 55 or the like (for example, call or e-mail transmission / reception) or data upload / download with the ISP server 53. be able to.

  That is, the terminal 55 is a terminal that enables diagnosis of a wireless communication system with an economical configuration and procedure using a terminal that is generally used in a wireless communication system, regardless of the introduction of a special device in the wireless communication system. is there.

  FIG. 3 is a block diagram showing a configuration example of the radio communication apparatus (base station BS20), which is the same as the configuration of a commonly used base station. Specifically, an antenna 200 that transmits and receives radio signals, an RF unit 210 that converts radio signals into electrical signals, a communication processing unit 220 that performs predetermined communication processing (signal termination, protocol conversion, fault monitoring, etc.) on electrical signals, It comprises an interface 230 for transmitting / receiving signals to / from the BSC 30, and a control unit 240 for controlling the entire BS 20. The control unit 240 includes a CPU 250 that is a processor that controls the operation of the entire BS 20, an MM 260 that is a memory that stores operation programs and various data necessary for the operation, and an I / O 270 that transmits and receives signals to and from external devices. The control line 280 connects the blocks described above. The I / O 270 is connected to the I / O 570 of the terminal 55 and may be used when controlling the BS 20 in the diagnostic operation of the wireless communication system 1. As an example, control of the cellular 10 (range (size) or sector designation in the cellular).

  FIG. 4 is a block diagram showing a configuration example of the BSC 30, which is the same as the configuration of a BSC that is generally used. Specifically, an interface 300 with the BS 20, an interface 320 with the PSTN 40 and the maintenance center 60, a packet processing unit 320 that performs signal processing such as switching of signals transmitted and received between these interfaces, and a control that controls the entire BSC 30 Part 330. The control unit 330 includes a CPU 340 that is a processor that controls the operation of the entire BSC 30, an MM 350 that is a memory that stores operation programs and various data necessary for the operation, and an I / O unit 360 that transmits and receives signals to and from external devices. It is done. The control line 370 connects the blocks described above.

  The wireless communication system 1 of the present invention uses the BS and BSC used in the general wireless communication system for the BS 20 and the BSC 30 as described above, and the diagnostic control signal and test between the terminal 55 and the maintenance center 60. It is used for signal transmission / reception. Diagnosis of the wireless communication system can be performed with an economical configuration and procedure using terminals and devices generally used in the wireless communication system, regardless of the introduction of special devices in the wireless communication system. Can be executed.

  FIG. 5 is a block diagram illustrating a configuration example of the maintenance center 60. The maintenance center 60 manages the state of each facility (BS20, cellular 10, BSC30, terminal 50, PSTN 40, etc.) of the wireless communication system 1, and performs wireless communication system 1 such as billing, response to inquiries from subscribers, maintenance instructions, etc. Management and operation. Specifically, an interface 600 for transmitting and receiving various signals such as monitoring and control to and from the BSC 30 and PSTN 40, various servers 620 for accumulating data for management and operation in the wireless communication system 1 and supplying to each facility, The control unit 680 controls the entire maintenance center 60. The control unit 680 includes a CPU 630 that is a processor that controls the operation of the entire maintenance center 60, an MM 640 that is a memory that stores operation programs and various data necessary for the operation, an I / O 650 that transmits and receives signals to and from external devices, and maintenance personnel Is configured with an input / output unit 660 that inputs and outputs signals necessary for management and operation. In this embodiment, the input / output unit 660 includes the keyboard 661, the display 662, the speaker 663, and the mouse 664. However, other devices may be included. The control line 670 connects the blocks described above.

  The various servers 620 include a mail server 621 for starting diagnosis of the wireless communication system 1 and collecting diagnosis results, and storing various test procedures and data / signals necessary for diagnosis of the wireless communication system 1 so Diagnostic server 622 provided to each facility, subscriber information of the wireless communication system 1 (for example, subscriber terminal phone number, mail address, terminal type, terminal software version number, etc.) is stored to set diagnosis start conditions Various servers such as a subscriber information server 623 for providing information at the time and at the start of diagnosis are provided. Of course, the configuration and functions of the server are merely examples, and a diagnosis may be realized by one server, or a diagnosis function described below may be shared by a number of servers. Further, these various servers 620 are arranged outside the maintenance center 60, or connected to these servers via a communication network such as the Internet by using various servers provided by ISP (Internet Service Provider). You may be the structure to do. In this case, it may be necessary to control the PSTN 40 such as switching the connection between the terminal 55 and the maintenance center 60 to a connection between the terminal 55 and the server in the diagnosis process.

  FIG. 6 is a sequence diagram showing an operation example of the wireless communication system 1, and shows an outline of the operation taking the case of diagnosing the wireless communication system 1 using the terminal 55-1 as an example. The outline of the diagnostic operation will be described below with reference to FIGS.

  When the maintenance center 60 instructs the diagnosis of the wireless communication system 1 (BSC 30 to BS 20-1 to cellular 10-1), the control unit 680 instructs the terminal 55-1 installed in the cellular 10-1 of the diagnosis AP 543-p. Activation is instructed (S100-1 to S100-4). Specifically, a configuration in which a maintenance person inputs a telephone number or an e-mail address assigned to the terminal 55-1 from the keyboard 661, or a timer (not shown) is provided in the control unit to periodically instruct activation. It is. Although FIG. 6 shows a configuration via the PSTN 40, a configuration in which activation is instructed directly via the BSC 30 may be used.

  When the terminal 55-1 activates the diagnostic AP 543-p (P100), the terminal 55-1 performs connection connection (S110-1 to S110-3) including the wireless communication path between the terminal 55-1 and the BSC 30.

  Thereafter, the diagnostic AP 543-p of the terminal 55-1, the diagnostic program of the maintenance center 60, and the diagnostic server 622 operate (P130, P200), and the diagnostic application is performed between the terminal 55-1 and the maintenance center 60. A connection is established (S120), and diagnostic communication (transmission and reception of control signals and test signals) using the diagnostic connection is performed, and the wireless communication system 1 (terminal 55-1 to cellular 10-1 to BS20-1) is established. The diagnosis of BSC 30 (˜PSTN 40) is executed (S130). When the diagnosis is completed, the diagnosis connection is released by an instruction from the terminal 55-1 or the maintenance center 60. Specific configuration examples of the diagnostic operation and the diagnostic program will be described in detail with reference to the drawings.

  After editing the diagnostic result (P140), the terminal 55-1 notifies the maintenance center 60 of the diagnostic result (S150-1 to S150-4) and disconnects the connection including the wireless communication path (S160-1 to S160-). 3) and the diagnostic AP 543-p is terminated (P170).

  FIG. 7 is a flowchart showing a configuration example of the diagnostic AP 543-p of the terminal 55. FIG. 8 is a flowchart showing a configuration example of a diagnostic program provided in the maintenance center 60. FIG. 9 is a sequence diagram illustrating an example of a diagnostic operation between the terminal 55 and the maintenance center 60. Further, FIG. 10 is a memory configuration diagram showing a configuration example of the diagnosis related data 5600 stored in the memory of the terminal 55, and FIG. 11 is a diagnosis related data stored in the memory of the maintenance center 60 and the server 620 (diagnosis server 622). 6 is a memory configuration diagram illustrating a configuration example of 6200. FIG. 12 and 13 are sequence diagrams illustrating an example of processing for determining diagnosis start based on the diagnosis start condition. Below, the detailed diagnostic operation example of the radio | wireless communications system 1 is demonstrated using these drawings.

  As described above, the power supply of the terminal 55 is always ON (FIG. 7: P010), and can be activated from the maintenance center 60 (FIG. 7: P070). In this state, when an activation instruction is received from the maintenance center 60 (FIG. 6: S100) and an activation event occurs (FIG. 7: P050), the diagnostic AP 543-p is activated (FIG. 6, 7: P100). A connection including a wireless communication path is established (FIG. 7: P110, FIG. 6: S110). Further, information of the own terminal such as a telephone number, an e-mail address, and identification information of the captured pilot signal is acquired and stored in the MM (FIG. 2: 560) (FIG. 7: 120, FIG. 10: 5610, 5611). The stored information is transmitted to the maintenance center 60 during diagnosis (FIG. 7: P130) described below, and is also stored in a diagnosis server (FIG. 5: 622) of the maintenance center (FIG. 5). 11: 6210, 6211).

  In the diagnosis of the wireless communication system 1 (FIGS. 6 and 7: P130), the packet delay amount is first measured (FIG. 7: P1300). Specifically, the terminal 55 generates an ICMP echo packet (loopback packet) defined in RFC 792 of the Internet Engineering Task Force (IETF) recommendation (FIG. 9: P1301) and transmits it to the maintenance center 60 (FIG. 9: S1300). Further, the transmission time at that time is recorded (FIG. 9: P1302, FIG. 10: 5620). When the maintenance center 60 receives the loopback packet in the event waiting state (FIG. 8: P2010), it generates a response packet (FIG. 9: P2071) and transmits it to the terminal 55 (FIG. 8: 2070, FIG. 9: S1305). The terminal 55 records the reception time of this response packet (FIG. 9: P1303, FIG. 10: 5621), calculates and records the delay time from the transmission time and the reception time (FIG. 9: P1304, FIG. 10: 5622). . If ICMP cannot be used due to restrictions such as APPF 542, for example, a function capable of looping back a packet may be used instead.

  Next, a diagnostic connection is established (FIG. 6: S120, FIG. 7: P1310, FIG. 8: P2030, FIG. 9: S1310 and S1315), and the following wireless communication system 1 (terminal 55-1 to cellular 10-1). Measure the data transfer rate of .about.BS20-1 to BSC30 (.about.PSTN40)). The establishment of the diagnostic connection may be performed before the above-described measurement of the packet delay amount. Further, in the subsequent diagnostic operation, an example of using FTP defined by RFC 959 of the IETF recommendation has been described, but this corresponds to the case where FTP cannot be used due to restrictions such as the APPF 542 as with the above-described delay time measurement. A function can be used instead.

  In the data transfer rate measurement in the downstream direction (from BSC 30 to terminal 55), the terminal 55 makes a diagnostic test file acquisition request to the maintenance center 60 (FIG. 7: P1320). Specifically, the terminal 55 transmits an acquisition request to the maintenance center 60 (FIG. 9: S1320), and records the transmission time as the file acquisition start time (FIG. 9: P1325, FIG. 10: 5630). When the maintenance center 60 receives a file acquisition request while waiting for an event (FIG. 8: P2020), it prepares to transfer the requested file (FIG. 9: P2051), and transmits (downloads) a test file for diagnosis to the terminal 55 ( FIG. 7: P1330, FIG. 8: P2050, FIG. 9: S1321). When the terminal 55 confirms the size of the received file and further receives a file transfer completion response (FIG. 9: S1325) from the maintenance center 50, the reception time of this response is used as the file acquisition end time together with the size of the received file. Recording (FIG. 9: P1335, FIG. 10: 5631, 5633), and calculating and recording the transfer time and transfer speed from the file acquisition start time, file acquisition end time, and size (FIGS. 7, 9: P1340, FIG. 10: 5631, 5634).

  In the data transfer rate measurement in the upstream direction (from the terminal 55 to the BSC 30), the terminal 55 makes a diagnostic test file transfer request to the maintenance center 60 (FIG. 7: P1350). Specifically, the terminal 55 transmits a transfer request to the maintenance center 60 (FIG. 9: S1350), and records this transmission time as the file transfer start time (FIG. 9: P1355, FIG. 10: 5640). Thereafter, a diagnostic test file is transmitted (uploaded) to the maintenance center 60 (FIG. 7: P1360, FIG. 9: S1360), and when the file transfer is completed, a completion response is also transmitted (FIG. 9: S1365). Is recorded as the file transfer end time (FIG. 9: P1365, FIG. 10: 5641). The terminal 55 confirms the size of the transmission file during uploading and records this size at the end of the file transfer (FIG. 10: 5643). During this time, when the maintenance center 60 receives a file transfer request in an event waiting state (FIG. 8: P2020), it prepares to receive the requested file (FIG. 9: P2061), and receives a diagnostic test file from the terminal 55. Receiving (FIG. 8: P2060, FIG. 9: S1360). The terminal 55 calculates and records the transfer time and transfer speed from the recorded file transfer start time, file transfer end time, and size (FIG. 7, 9: P1370, FIG. 10: 5642, 5644).

  In the above description, an example of measurement / calculation of the average data transfer rate has been described, but there are various types of data transfer rates such as an average transfer rate and a peak transfer rate. Therefore, measurement and calculation may be performed by selecting a transfer rate necessary for actual diagnosis according to the configuration and operation method of the wireless communication system 1. Specifically, a specific speed measurement / calculation method is set in advance in the APp (543-p) of the terminal 55, or the maintenance center 60 can select a necessary measurement / calculation method from several methods. It's a good thing. Furthermore, if there are necessary measurement (diagnosis) items in addition to the above-described transfer delay, a program necessary for the APp (543-p) of the terminal 55 is provided, and the maintenance center 60 also performs processing corresponding to these items. It is only necessary to provide an event that can be performed (in the above example, transmission / reception of a diagnostic test file, etc.).

  That is, the wireless communication system 1 of the present invention uses a BS and BSC used in a general wireless communication system, and a diagnostic control signal between the terminal 55 and the maintenance center 60 in which an AP is added to a general-purpose terminal. Diagnostic of wireless communication systems with economical configurations and procedures using terminals and devices commonly used in wireless communication systems, regardless of the introduction of special devices in wireless communication systems. Can be executed. Of course, the diagnostic method of the wireless communication system of the present invention is not limited to the measurement / calculation of packet delay and average data transfer rate. For example, the normality of the paging operation may be confirmed. In addition, if a diagnostic program that performs on-hook and off-hook of a voice call is created, the normality of the voice call can be confirmed.

  When the measurement of the data transfer rate is completed, the diagnostic connection is released (FIG. 6: S140, FIG. 7: P1380, FIG. 8: P2040, FIG. 9: S1380 and S1385), and the terminal 55 performs the diagnosis recorded in the MM560. The result data (FIG. 10: 5600) is edited (FIGS. 6, 7: P140), and the notification to the maintenance center 60 (FIGS. 6, 7: P150) as described above with reference to FIG. Then, the connection including the wireless communication path is disconnected (FIG .: P160) and the diagnosis AP 543-p is terminated (FIG. 6, 7: P170).

  The terminal 55 edits data such as the diagnosis result as shown in FIG. 10 into data in a transmission format generally handled in a wireless system such as mail transmission, and notifies the mail server 621 provided in the maintenance center 60 of the data. (FIG. 6: P140, S150, FIG. 7: P150).

  When the maintenance center 60 receives data such as a diagnosis result transmitted from the terminal 55 in the event waiting state (FIG. 8: P2020), the diagnosis server 622 reads the data (FIG. 8: P2080) and transmits the data. The diagnosis terminal 55 is confirmed (FIG. 8: P2090). This confirmation is made only by adding the AP to the general terminal 50 for the diagnosis terminal 55. Since the general terminal 50 can also access the maintenance center 60 by complaint processing or the like, mischief due to terminal impersonation or the like. This is done to prevent system misconnection and ensure system safety. Of course, measures for ensuring safety, such as not allowing the diagnostic terminal 55 to make and receive calls from other than the maintenance center 60, are implemented as the wireless communication system 1.

  When the diagnosis server 622 confirms the terminal 55, the database (DB: 6220 (FIG. 5) shown in FIG. 5) is used for subsequent diagnosis of the wireless communication system 1 in the maintenance center 60. (Not shown)) (FIG. 9: P2100). Although omitted in the description of the previous diagnostic operation, the diagnostic test file, information on the test terminal, and the like are also stored in the DB 6220 of the diagnostic server 622. Of course, as described above, the configuration and functions of the server are merely examples, and these functions may be realized by one server, or may be configured to be shared by multiple servers. Further, various servers may be arranged outside the maintenance center 60, or may be configured to connect to these servers via a communication network such as the Internet by using a server provided by an ISP.

  In the maintenance center 60, the radio communication system 1 is diagnosed based on the contents stored in the DB 6220. Specifically, in a state waiting for an event (FIG. 8: P2020), the maintenance staff's input / output unit 660 (for example, a keyboard 661 operation or a periodic diagnosis result using a timer (not shown) based on the operation program of the CPU 630 and MM 640) If a diagnosis location (for example, terminal 55-1 to cellular 10-1 to BS20-1 to BSC30) is designated by the acquisition request, it is determined whether the requested content is correct (FIG. 8: P2110) and correct. For example, necessary information is acquired from the DB 6220 (FIG. 8: P2120) and displayed on the display 662 or taken into the MM 640 (FIG. 8: P2130).

  The maintenance center 60 can register a plurality of diagnosis start conditions in advance (FIG. 8: P2140). The diagnostic server 622 periodically acquires the latest information used for the determination (FIG. 8: P2150), and determines whether all registered diagnosis start conditions are satisfied (FIG. 8: P2160). Diagnosis start conditions include, for example, base station installation area, weather conditions, date, time, cellular congestion, terminal location from cellular center, terminal type, terminal radio status, terminal movement speed, and simultaneous diagnosis The number of executable terminals can be set.

  The latest information used for the determination can be acquired by various methods. For example, the weather conditions can be acquired from the weather information server 54 via the Internet. The terminal type can be acquired by referring to information in the subscriber information server 623 in the maintenance center 60. In addition, in order to obtain the base station installation area, the degree of cellular congestion, the position of the terminal from the cellular center, the wireless state of the terminal, the moving speed of the terminal, the number of terminals that can be diagnosed simultaneously, BS20, BSC30 Or information stored in any of the maintenance centers 60 may be used.

  When it is determined in the determination of the registered diagnosis start condition (FIG. 8: P2160) that all conditions are satisfied, the maintenance center 60 issues a diagnosis start event (FIG. 8: P2170).

  The wireless communication system 1 performs various connection controls for maintaining communication quality in normal operation (for example, communication between the terminal 50 and the PC 51 via the BC, BSC, and PSTN). The state of the communication system is stored in the BS 20, the BSC 30, or the maintenance center 60. For example, when the terminal 50-1-1 performs data transmission / reception with the PC 51, the radio wave state (C / I value) of the own terminal within the cellular 10-1 and the terminal (50-1- n) and the data transfer rate permitted for the terminal 50-1-1 is set and communicated with the BS 10-1 according to the situation such as the data transfer rate already permitted for those terminals. . Such various settings and status information can be collected in the maintenance center 60 in the same manner as the diagnosis results described above.

  The diagnosis terminal 55-1 is also equipped with a diagnosis AP 543-p similar to a normal AP in a general terminal 50, and the same cellular 10-1 and BS 20- as the general terminal are connected only to the maintenance center 60. 1, since the BSC 30 is used for communication (diagnosis operation), the diagnosis of the wireless communication system 1 can be executed as follows without introducing a special device to the wireless communication system.

  When the diagnosis center 55 is activated from the maintenance center 60 and the diagnosis AP 543-p is activated, similarly to the general terminal 50, the radio wave state (C / I value) and other terminals (50 Data that is permitted between the maintenance center 60 via the BC 20-1 and the BSC 30 in accordance with the situation such as the number of 1-n) and the data transfer speed already permitted to those terminals. A diagnostic connection with the transfer rate set is established. If the diagnostic operation as described above is performed in this state, an actual communicated packet delay and data transfer rate that cannot be performed by the conventional wireless communication system 1 can be obtained. That is, if the values and state information set as the operation of the normal wireless communication system 1 are compared with the results of diagnosis by actually using the wireless communication system 1, the normality of the wireless communication system 1 can be confirmed. An abnormality can be detected.

  For example, after performing a software upgrade or hardware change (exchange) of the BS 10-1 that provides the best effort packet communication service, the packet delay is measured, and as a result, the number of terminals used in the cellular 10-1 is A delay amount (for example, 3 mS) larger than a set (assumed) delay amount (for example, within 500 μS) is measured or set (assumed), although there are few factors that cause delay in the communication network. If the file can only be uploaded at a transfer rate lower than the data transfer rate (for example, 128 kbps) (for example, 70 kbps), it means that some abnormality has occurred in the BS 10-1 or the setting value is not properly tuned. Service can be performed as a result of the diagnosis and maintenance work before user complaints are reported It is possible to improve the quality. Specifically, the set (assumed) value and the value stored in the DB 6220 are displayed on the display 662 and the maintenance staff makes a determination, or the comparison is made based on the operation programs of the CPU 630 and the MM 640 to determine that there is an abnormality and notify it. What is necessary is just composition. Further, if the values and status information set as the operation of the wireless communication system 1 cannot be obtained at the maintenance center 60, a reference value used for diagnosis is set in the maintenance center 60 in advance, and this and the DB You may compare the contents.

  In addition, based on the operation program of the CPU 630 and the MM 640, statistical processing (for example, acquisition of predicted values by average value acquisition, dispersion acquisition, interpolation / extrapolation, etc.) is performed on regularly obtained diagnosis results and setting (prediction) values. By carrying out and comparing these, it is possible to diagnose the deterioration of the BS 10-1 and the like, so that preventive maintenance is realized. For example, it is predicted that the packet delay amount will gradually increase and exceed a predetermined allowable value, or the actual data transfer rate will gradually decrease, or the deviation from the set (predicted) transfer rate will increase. Such a phenomenon can be detected by the maintenance center 60, so that the reliability, safety and serviceability of the wireless communication system 1 can be maintained by taking preventive maintenance measures such as replacing the BS 10-1 before a serious failure occurs. become able to.

  In the above description, the diagnosis location is described as the terminal 55-1 to the cellular 10-1 to BS20-1 to the BSC30, but the terminal 55-1 to the sector 10-1-x to (the cellular 10-1) to the BS20. -1 to BSC30 is also possible. In this case, as described above, the BS 20 control such as specifying the sector in the diagnostic operation by connecting the I / O 270 of the BS 20 and the I / O 570 of the terminal 55, for example, may be executed.

  Furthermore, in the wireless communication system 1 of the present invention, the diagnosis can be performed using the diagnosis terminal 55 having only the diagnosis AP in the movable general-purpose terminal 50, so that a plurality of diagnoses can be made in one cellular (or sector). It is easy to install the service terminal 55. In this way, it is possible to diagnose the serviceability of the wireless communication system 1 for a plurality of terminals. Moreover, since an overload state can be easily created, it can be used for performance measurement of the wireless communication system 1.

  FIG. 12 is a sequence diagram illustrating an example of processing for determining diagnosis start based on the diagnosis start condition.

  For example, in the maintenance center 60, a maintenance person says, “While midnight from 10:00 to 04:00 on weekdays, in the cellular 10-1 to BS20-1 to BSC30, the rainfall amount for the previous hour is 1 mm or less and the previous hour for 1 hour. The maximum instantaneous wind speed is 5.5 m / s or less, the number of terminals performing data communication with the corresponding cellular cell is 0, and the number of terminals capable of performing diagnosis within the radio wave reach of the cellular line is 50 or more. The reservation “Execute network diagnosis AP for 50 selected devices” is registered (FIG. 12: S140-1). In this case, the diagnosis server 622 includes time information “Mon, Tue, Wed, Thu, Fri 01:00 to 04:00”, diagnosis target cellular “Cellular 10-1 to BS20-1 to BSC30”, weather condition “temperature 0”. More than ℃, 1mm or less before rainfall, and 5.5m / s or less at maximum moment of 1 hour before wind speed, cellular congestion "0 terminals running data communication", more than 50 terminals capable of performing diagnosis, The number of diagnosis execution terminals “50” is stored as a diagnosis start condition (FIG. 12: P1400), and the maintenance registration is notified to the maintenance person (FIG. 12: S140-2).

  The diagnosis server 622 reads the diagnosis start condition stored for each reservation (FIG. 12: P1401), and obtains the latest information about each from the BS 20, the BSC 30, the maintenance center 60, the weather server 54, and the like (FIG. 12). 12: P1402), it is determined whether all registered diagnosis start conditions are satisfied (FIG. 12: P1403).

  For example, the diagnosis server 622 periodically obtains the latest weather information from the weather server 54, and compares the obtained weather information with the weather conditions included in the diagnosis start condition registered for reservation, thereby obtaining the weather condition. It may be determined whether or not is satisfied. Alternatively, the BS 20 may include a sensor (for example, a thermometer, a rain gauge, an anemometer, or the like) that acquires weather information, and the diagnosis server 622 may acquire the weather information obtained by the sensors.

  In general, at least one of the BS 20 or the BSC 30 knows the number of terminals 55 and the like existing in each cellular and the number of terminals 55 and the like performing data communication among them. The diagnosis server 622 can acquire the number of terminals 55 and the like that are executing data communication and the number of terminals 55 and the like that can execute diagnosis by referring to these pieces of information. In the example of FIG. 12, the number of terminals 55 and the like that are executing data communication is acquired from the BS 20, and the number of terminals 55 and the like that can execute diagnosis is acquired from the BSC 30.

  Here, the data communication is the opposite via BS 20 controlled by an application program (for example, AP1 (543-1) or AP2 (543-2)) other than the diagnostic application program APp (543-p). User data communication with the device. For example, when the opposite device is another terminal 55 or the like, the data communication is communication for a call between terminals or a mail transmission / reception between terminals. When the opposite apparatus is the ISP server 53, the data communication is communication for downloading / uploading data between the terminal 55 and the ISP server 53.

  Whether or not each terminal 55 and the like can execute diagnosis can be determined based on various viewpoints. For example, the terminal 55 or the like in which the diagnostic application program APp (543-p) is not installed cannot execute the diagnosis. Even if the diagnosis application program APp (543-p) is installed, the diagnosis cannot be executed unless the subscriber who owns the terminal 55 or the like permits the execution of the diagnosis. Further, when the diagnosis is executed, test signals and the like are transmitted and received between the terminal 55 and the maintenance center 60, thereby inhibiting communication (for example, communication for a call) by another application program. There is a case. For this reason, it is desirable that the terminal 55 or the like that performs communication using another application program does not execute diagnosis.

  For this reason, the diagnostic server 622 is installed with the diagnostic application program APp (543-p), for example, of the terminal 55 in the cellular to be diagnosed, and the diagnosis is permitted by the subscriber, and You may acquire the number of things which are not performing communication by another application program as the number of the terminals 55 etc. which can perform diagnosis. Note that information indicating whether or not the diagnostic application program APp (543-p) is installed in each terminal 55 and the like, and whether or not the subscriber is permitted to perform the diagnosis, includes the diagnostic server 622. It may be held by itself, or may be held by the subscriber information server 623 or the like. Further, as described above, whether or not communication by another application program is being executed is grasped from information held by the BS 20 or the BSC 30.

  If it is determined in P1403 that all conditions are satisfied, the diagnostic server 622 issues a diagnosis start event to 50 arbitrarily selected diagnostic terminals (FIG. 12: P1404). . This diagnosis will cause data communication using multiple diagnostic terminals in the late-night quiet time zone on the specified cellular, and as a result, any data communication model that assumes a busy time zone is intentional Is equivalent to having been reproduced. The maintenance personnel optimize the operation parameters of the radio base station system and increase the number of radio diagnostic data collected from 50 diagnostic terminals in this diagnosis and the operational data collected by the BS 20, BSC 30, or maintenance center 60. It can be used for judgment.

  Further, it is known that propagation of radio waves in a wireless communication system is affected by weather conditions (for example, rainfall, temperature, wind speed, etc.). For this reason, in order to optimize the operation parameters of the radio base station system and determine whether to add a station, the propagation state of radio waves in specific weather conditions may be considered. However, since weather conditions are easy to change and difficult to predict, it is difficult to make a diagnosis by sending a maintenance person with a diagnostic terminal to the cellular when the target cellular condition meets certain weather conditions. is there. According to the present invention, it is possible to easily propagate radio waves under a specific weather condition by registering a weather condition as a diagnosis start condition and executing a diagnosis using the subscriber's terminal when the condition is satisfied. The situation can be investigated.

  Until now, optimization of operation parameters of a radio base station system and determination of station expansion have been mainly performed based on the result of simulation. However, in order to do so, labor for carrying out the simulation work itself is necessary, and the reliability of the data obtained as a result is less than that of the actual data. The present invention makes it possible to collect data by intentionally reproducing a desired data communication model on a real system at low cost without additional capital investment, and using this improves the adjustment effect of operational parameters. And it can be expected to improve the accuracy of station expansion judgment.

  FIG. 13 is a sequence diagram illustrating another example of a process for determining a diagnosis start based on a diagnosis start condition.

  As another example, if the maintenance staff says, “All the cellular devices under BSC30 are located at a distance of 16 km or more from the cellular center, and the terminal model is an XYZ model manufactured by Company A, and the terminal can perform diagnosis. When the reservation “execute AP” is registered, the diagnostic server 622 determines the cellular to be diagnosed “all cellular under BSC 30”, the position of the terminal from the cellular center “16 km or more”, and the terminal type “XYZ model manufactured by company A”. Is stored as a diagnosis start condition. The diagnostic server 622 periodically obtains the latest information on the diagnosis start conditions from all BSs including the BS 20 under the BSC 30, the BSC 30, the maintenance center 60, and the subscriber information server 623, and all the registered diagnosis start conditions are obtained. It is determined whether or not all the conditions are satisfied. If all the conditions are satisfied, a diagnosis start event is issued to the arbitrarily selected diagnostic terminal 55. This diagnosis is a problem phenomenon that is seen only in a specific type of wireless terminals that are put on the market every day (for example, the call connection time in a specific type is long compared to other types, the call connection success rate is low, voice / Effective when analyzing data transfer). In the past, a specific type of wireless terminal had to be prepared by a maintenance person and then placed at the desired location of the corresponding cellular. However, according to the present invention, it is not necessary to procure and install the wireless terminal, and diagnosis at the maintenance center is required. The advantage is that the diagnosis can be automatically started without missing the timing when the diagnosis can be started by the reservation function.

  The configuration and the diagnosis method (operation) of the wireless communication system 1 described above are examples, and even if the configuration and method are other than this, the wireless communication system is linked with the terminal provided with the diagnostic program and the maintenance center. The radio communication system and the diagnostic method thereof configured to make the diagnosis of the above are included in the scope of the present invention.

  According to the wireless communication system and the diagnostic method of the present invention, and the wireless terminal used for diagnosis of the wireless communication system, the diagnosis of the wireless communication device can be performed remotely using a commonly used terminal regardless of the introduction of a special device. A wireless communication system and method that can be implemented can be realized with a simple and economical configuration and procedure.

1 wireless communication system 10 cellular 20 base station 30 base station control station 40 PSTN
50 Terminal 55 Diagnosis terminal 60 Maintenance center 543 Terminal installation application program P130 Diagnosis program (for diagnosis terminal)
P200 diagnostic program (for maintenance center)

Claims (10)

A plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within a radio wave reachable range of any one of the wireless communication devices, and the wireless terminals via the wireless communication devices A wireless communication system comprising a maintenance device,
Each of the wireless terminals controls communication between the first program for controlling communication with the opposite device via at least one of the wireless communication devices and the maintenance device for diagnosing the wireless communication system. A second program, and
The maintenance device is
Holding a diagnosis start condition including information specifying the number of the wireless terminals within the radio wave reachable range and capable of executing the second program ;
When the number of the wireless terminals that are within the radio wave reachable range and can execute the second program satisfies the diagnosis start condition, it is designated by the diagnosis start condition that is within the radio wave reachable range. Transmitting a start instruction for the second program to the wireless terminal capable of executing the second program,
The wireless terminal that has received the activation instruction
Diagnosing the wireless communication system by executing the second program;
A wireless communication system, wherein information indicating a result of diagnosis of the wireless communication system is transmitted to the maintenance device. The said maintenance apparatus determines with the said radio | wireless terminal which is not performing communication with the said opposing apparatus controlled by the said 1st program being able to execute the said 2nd program. The wireless communication system according to 1.   A plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within a radio wave reach of any one of the wireless communication devices, and the wireless terminals via the wireless communication devices A wireless communication system comprising a maintenance device,
  Each of the wireless terminals controls communication between the first program for controlling communication with the opposite device via at least one of the wireless communication devices and the maintenance device for diagnosing the wireless communication system. A second program, and
  The maintenance device is
  Holding a diagnosis start condition including information specifying weather conditions of a region including the location of each wireless terminal;
  Connected to a weather information server that sends weather information via a communication network,
  By comparing the weather information received from the weather information server and the diagnosis start condition, it is determined whether the diagnosis start condition is satisfied,
  If it is determined that at least one of the plurality of wireless terminals satisfies the diagnosis start condition, an instruction to start the second program is transmitted to at least one of the plurality of wireless terminals;
  The wireless terminal that has received the activation instruction
  Diagnosing the wireless communication system by executing the second program;
  A wireless communication system, wherein information indicating a result of diagnosis of the wireless communication system is transmitted to the maintenance device. A plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within a radio wave reach of any one of the wireless communication devices, and the wireless terminals via the wireless communication devices A wireless communication system comprising a maintenance device and a subscriber information server that holds information indicating the type of each wireless terminal,
  Each of the wireless terminals controls communication between the first program for controlling communication with the opposite device via at least one of the wireless communication devices and the maintenance device for diagnosing the wireless communication system. A second program, and
  The maintenance device is
  Holding a diagnosis start condition including information specifying the model of the wireless terminal;
  Based on the information indicating the type of each wireless terminal, it is determined whether or not the type of each wireless terminal within the radio wave reachable range is the same as the designated type, and is determined to be the same Transmitting an instruction to start the second program to the wireless terminal;
  The wireless terminal that has received the activation instruction
  Diagnosing the wireless communication system by executing the second program;
  A wireless communication system, wherein information indicating a result of diagnosis of the wireless communication system is transmitted to the maintenance device. The wireless terminal that executes the second program transmits and receives a control signal and a test signal to and from the maintenance device, so that a transfer delay time of the test signal to and from the maintenance device and the test 5. The apparatus according to claim 1, wherein at least one of signal transfer rates is measured, and the measured value is transmitted to the maintenance device as information indicating a result of diagnosis of the wireless communication system. The wireless communication system according to 1. A plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within a radio wave reach of any one of the wireless communication devices, and the wireless terminals via the wireless communication devices A wireless communication system diagnosis method comprising a maintenance device,
  Each of the wireless terminals controls communication between the first program for controlling communication with the opposite device via at least one of the wireless communication devices and the maintenance device for diagnosing the wireless communication system. A second program, and
  The maintenance device holds a diagnosis start condition including information specifying the number of the wireless terminals that are within the radio wave reachable range and capable of executing the second program,
  The diagnostic method includes:
  When the maintenance device is within the radio wave reachable range and the number of the wireless terminals that can execute the second program satisfies the diagnosis start condition, the diagnosis is within the radio wave reachable range. A first procedure for transmitting an instruction to start the second program to the wireless terminal capable of executing the second program, the number of which is specified by a start condition;
  A second procedure for diagnosing the wireless communication system by executing the second program when the wireless terminal receives the activation instruction;
  And a third procedure in which the wireless terminal transmits information indicating a result of diagnosis of the wireless communication system to the maintenance device. In the first procedure, the maintenance device further determines that the wireless terminal that is not executing communication with the opposite device controlled by the first program can execute the second program. The diagnostic method for a wireless communication system according to claim 6, further comprising: A plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within a radio wave reach of any one of the wireless communication devices, and the wireless terminals via the wireless communication devices A wireless communication system diagnosis method comprising a maintenance device,
  Each of the wireless terminals controls communication between the first program for controlling communication with the opposite device via at least one of the wireless communication devices and the maintenance device for diagnosing the wireless communication system. A second program, and
  The maintenance device is
  Holding a diagnosis start condition including information specifying weather conditions of a region including the location of each wireless terminal;
  Connected to a weather information server that sends weather information via a communication network,
  The diagnostic method includes:
  The maintenance device determines whether or not the diagnosis start condition is satisfied by comparing the weather information received from the weather information server with the diagnosis start condition, and at least one of the plurality of wireless terminals includes the A first procedure for transmitting an instruction to start the second program to at least one of the plurality of wireless terminals when it is determined that the diagnosis start condition is satisfied;
  A second procedure for diagnosing the wireless communication system by executing the second program when the wireless terminal receives the activation instruction;
  And a third procedure in which the wireless terminal transmits information indicating a result of diagnosis of the wireless communication system to the maintenance device. A plurality of wireless communication devices connected to a communication network, a plurality of wireless terminals each within a radio wave reach of any one of the wireless communication devices, and the wireless terminals via the wireless communication devices A diagnostic method for a wireless communication system comprising a maintenance device and a subscriber information server that holds information indicating a type of each wireless terminal,
  Each of the wireless terminals controls communication between the first program for controlling communication with the opposite device via at least one of the wireless communication devices and the maintenance device for diagnosing the wireless communication system. A second program, and
  The maintenance device holds a diagnosis start condition including information specifying a model of the wireless terminal;
  The diagnostic method includes:
  Based on the information indicating the type of each wireless terminal, the maintenance device determines whether or not the type of each wireless terminal within the radio wave reachable range is the same as the specified type, and A first procedure for transmitting an instruction to start the second program to the wireless terminal determined to be;
  A second procedure for diagnosing the wireless communication system by executing the second program when the wireless terminal receives the activation instruction;
  And a third procedure in which the wireless terminal transmits information indicating a result of diagnosis of the wireless communication system to the maintenance device. In the second procedure, the wireless terminal transmits / receives a control signal and a test signal to / from the maintenance device, so that the transfer delay time of the test signal to / from the maintenance device and the test signal The diagnostic method for a wireless communication system according to any one of claims 6 to 9, further comprising a procedure of measuring at least one of the transfer rates.