KR20020047940A - System and method for measurement of the quality automatically - Google Patents

Abstract

PURPOSE: A quality automatic measuring system and a method thereof are provided to transmit the quality data measured by a remote measuring device installed at a car and a bus etc. to a server through SMS(Short Message Service) message, collect and analyze the data and then offer the necessary information to a manger at real time. CONSTITUTION: According to the control command of a measurement data server(80), a plurality of remote measurement devices(10) receive state information periodically from a GPS(Global Positioning System) and then synchronize the time. Also the device(10) collects quality information through an MS(mobile station) installed to moving bodies(a bus or a freight car etc.) and then transmits the information together with state information at real time as SMS(Short Message Service) type through the existing wireless communication network. The measurement data server(80) analyzes the present status or the cause of fault in quality through the data periodically transmitted from the device(10). The server(80) extracts and provides the data desired by a manager from a database(90).

Description

System and method for measurement of the quality automatically}

The present invention relates to a remote unmanned measurement system, and more particularly, the call quality measurement data measured by carrying a telemetry device on a mobile object such as a car, a bus, etc. are transmitted to a server through a short message service (SMS) message. Call quality measurement system and method and method for realizing the information required by the operator in real time by collecting and analyzing the call quality measurement data delivered from each telemetry device in the server in real time, A computer readable recording medium having recorded a program.

Explosive acceptance of subscribers since the start of commercially available digital cellular services (DCS) and personal communications services (PCS), as well as future wireless services such as wireless local loop (WLL) and IMT-2000 (or FPLMTS) It is increasing.

When a wireless communication service provider wants to install a plurality of base stations in each area in order to guarantee call quality, a cell planner designing a callable area that each base station can cover is performed. In accordance with such cell planning, efforts will be made to improve call quality in the shadow area by expanding base stations, installing optical micro-cells, and adjusting hand-off parameters.

Typically, call quality measurements rely on out-door measurements.

The method of measuring call quality in the out-door uses a numerical road map used by a GPS (GPS) receiver and a vehicle navigation system. More specifically, the out-door measurement method measures by having a measurement agent mount a GPS receiver in a vehicle and move around a selected area for cell planning. At this time, the GPS receiver tracks the location where the vehicle moves to provide the tracked vehicle location information, and maps and records the call quality measured through the terminal measured at each moved location to the absolute location of the numerical road map. By repeating the operation, the call quality measurement is performed for the area selected for cell planning.

In a wireless communication system, communication between a base station transceiver subsystem (BTS) and a mobile station (MS) (portable terminal, smartphone, etc.) is wireless.

Since one base station (BTS) is responsible for communication in a limited area around it, many base stations (BTS) must be installed for smooth service.

Most base stations (BTS) are operated unattended, so it is difficult to deal with them immediately even if the wireless communication environment is affected by bad weather or other terrain changes. As a result, many mobile operators regularly monitor the call quality status of their jurisdictions.

The conventional call quality monitoring system is as follows.

The operator loads the call quality measuring device into the vehicle and moves the measured area. At this time, the call quality measurement device is composed of a terminal and the measurement data logging (Logging) equipment connected to the terminal and the GPS (GPS: Global Positioning System).

After the measurement, the operator brings the measurement data collected by the measurement data logging equipment to the operation center and collects it with other data for analysis.

However, this conventional measurement method requires the continuous collection of many operating personnel and the cost of the measurement equipment is large. In addition, since the collected data is collected and analyzed after the measurement is completed, there is a problem that it is impossible to immediately identify or cope with a problem occurring in the wireless environment.

In order to solve the above problems, the present invention proposes to transmit a call quality measurement data measured on a mobile object such as a car or a bus to a server through an SMS message, and from each telemetry device in the server. To collect and analyze the call quality measurement data delivered in real time, and to provide the operator with the necessary information in real time, an automatic call quality measurement system and a method and a computer-readable recording medium recording a program for realizing the method. The purpose is to provide.

1 is a configuration diagram of an embodiment of an automatic call quality automatic measurement system according to the present invention.

2 is a detailed configuration diagram of an embodiment of the telemetry device of FIG.

Figure 3 is a detailed flowchart of one embodiment of the measurement start and end of the remote call quality automatic measurement method according to the present invention.

4 is a detailed flowchart illustrating an embodiment of a method for retransmitting a measurement message in a method for automatically measuring remote call quality according to the present invention.

5 is a detailed flowchart of an embodiment of a process of transmitting status information in a method for automatically measuring remote call quality according to the present invention;

* Explanation of symbols for the main parts of the drawings

10: telemetry device 20: base station (BTS)

30: control station (BSC) 40: exchange station (MSC)

50: Short Message Service Center 60: Visitor Location Register (VLR)

70 home position register (HLR) 80 measurement data server

90: database

The present invention for achieving the above object, in the call quality measurement system in a wireless communication system, according to the call quality measurement control command periodically receives the state information (time information, coordinate information) from the satellite to synchronize the time A plurality of call quality collection means for collecting quality information through a mobile terminal mounted on a mobile body and transmitting the quality information together with the status information through a known wireless communication network in real time; The call quality measurement control command is transmitted to the plurality of call quality collecting means in the form of a short message service (SMS) message through the wireless communication network, and each call periodically transmitted from the plurality of call quality collecting means through the wireless communication network. Analyzing call quality by collecting quality measurement data (status information, quality information) in real time to analyze the status of call quality and cause of poor call quality, and extracting relevant call quality data from call quality storage means in real time Way; And the call quality storage means for storing and managing the result analyzed by the call quality analysis means and the call quality measurement data.

In order to achieve the above object, the present invention provides a method for measuring call quality in a wireless communication system, wherein a measurement data server issues a call quality measurement control command (measurement start, end, measurement method indication) in the form of a short message service (SMS) message. Transmitting to a plurality of telemetry apparatuses through a wireless communication network; A second, in real time, that collects each call quality measurement data (status information, quality information) in the form of a short message service (SMS) message transmitted from the plurality of telemetry devices through the wireless communication network periodically according to a call quality measurement control command; step; And a third step of databaseting the call quality measurement data and analyzing in real time the current state of call quality and the cause of the poor call quality based on the call quality measurement data.

In addition, the present invention is characterized in that it further comprises a fourth step of extracting the call quality data desired by the operator from the database to provide in real time.

In order to achieve the above object, the present invention provides a wireless communication system including a processor, in order to measure call quality, a measurement data server having a call quality measurement control command (measurement start, end, measurement) in the form of a short message service (SMS) message. A first function of transmitting a method indication) to a plurality of telemetry devices through a wireless communication network; A second, for collecting in real time each call quality measurement data (status information, quality information) in the form of a short message service (SMS) message transmitted from the plurality of telemetry devices through the wireless communication network according to a call quality measurement control command; function; And a program for recording a database for each call quality measurement data, and for realizing a third function of analyzing the current state of call quality and the cause of failure of call quality in real time based on the call quality measurement data. Provide a record carrier.

The present invention also provides a computer-readable recording medium recording a program for further realizing a fourth function of extracting a corresponding call quality data desired by an operator from a database and providing the same in real time.

The present invention is to automatically measure the radio frequency (RF) quality of the wireless communication section, by installing a telemetry device in a mobile, such as a bus, taxi, etc., controlled or measured through a measurement data server and SMS transmission It will transmit data. At this time, the measurement data server detects and monitors the status of the remote measuring devices and the like, and controls the start, end, and measurement method of the measurement. In addition, the measurement data server collects and analyzes data collected in real time from each telemetry device in real time, and provides the manager with the necessary information.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an automatic call quality measurement system according to an embodiment of the present invention, and assumes that call quality measurement data is transmitted and received through a known code division multiple access (CDMA) mobile communication network. .

In the figure, "10" is a telemetry device, "20" is a base station transceiver subsystem (BTS), "30" is a base station controller (BSC), and "40" is a switching center (MSC). ), "50" is the VLR (Vistor Location Register), "60" is the Home Location Register (HLR), "70" is the SMS Message Center (SMS MC), " 80 "represents a measurement data server, and" 90 "represents a database, respectively.

As shown in Fig. 1, the remote call quality automatic measurement system according to the present invention is a GPS satellite periodically according to a request (call quality control commands (measurement conditions, start and end commands, etc.) of the measurement data server 80). Receive status information (time information, coordinate information) from (see FIG. 2) to synchronize time, and collect quality information through mobile station (MS) (14 of FIG. 2) mounted on a moving object (bus, freight vehicle, etc.) And a plurality of telemetry devices 10 for transmitting in real time through a known wireless communication network (BTS, BSC, MSC, SMS MC, etc.) in the form of a short message service (SMS) message with status information (time information, coordinate information) and By collecting each call quality measurement data (status information, quality information) periodically transmitted from a plurality of telemetry devices 10 through a wireless communication network in real time, and analyzes the status of call quality and cause of poor quality of the call, The currency you want The measurement data server 80 extracts quality data from the database 90 and provides the data in real time, and the database 90 stores and manages the results analyzed by the measurement data server 80 and each call quality measurement data.

Here, each telemetry device 10, as shown in Figure 2, amplified state information (coordinate information, time information) of the weak signal strength received from the GPS satellites via the GPS antenna 11 in a decodable state GPS controller 12 for transmitting the state information transmitted from the GPS receiver 12 to the mobile station (MS) 14 in time synchronization between the GPS receiver 12 and the GPS satellite and the mobile station (MS) 14. And a mobile station (MS) 14 which is mounted on the mobile unit and collects quality information of the wireless section and transmits the quality information together with the status information to the base station (BTS) 20 through a wireless communication network in the form of a short message service (SMS) message. Include.

Since a known CDMA mobile communication network environment is only a technique well known in the art, a detailed description thereof will be omitted here. However, the configuration of the system for providing SMS will be briefly described.

The mobile station (MS) 14 is within the range of any base station (BTS) 20, and the information of the mobile station (MS) 14 is transmitted to the base station (BTS) 20 and the control station (BSC) 30 controlling it. Is transmitted to the switching center (MSC) 40, and information transmitted from the switching center (MSC) 40 is transferred to the mobile station (MS) 14 via the control station (BSC) 30 and the base station (BTS) 20. Is sent).

The mobile station (MS) 14 is a terminal mounted in a vehicle and capable of communicating while moving. The mobile station (MS) 14 uses a forward channel for text reception and a reverse channel for transmission. In this case, all text information uses an SMS message, and when received, a Mobile Terminated (MT) SMS is used and a Mobile Originated (MO) SMS is used.

In general, the CDAM mobile communication network uses a data burst message of a paging channel of the CDMA method when receiving, and transmits the corresponding text message as a data burst message of a forward traffic channel when the user is busy. do. In addition, a text burst message of an access channel is used to transmit a text message, and a data burst message of a reverse traffic channel is transmitted when a text message is in use.

The text message transmitted and received at the mobile station (MS) 14 is connected to the switching center (MSC) 40 through a base station (BTS) 20 and a control station (BSC) 30 for high frequency signal processing and call processing.

A base station (BTS) 20 connects a mobile station (MS) 14 to a control station (BSC) 30, and includes a digital channel unit (DCU) and a time / frequency control unit (TCU: Timing / Frequency). Control Unit), Radio Frequency Unit (RFU), and Global Positioning System (GPS).

The base station (BTS) 20 performs a wired / wireless conversion function of communicating with a mobile station (MS) 14 over the air and communicating with a control station (BSC) 30 by wire.

The control station (BSC) 30 connects the base station (BTS) 20 to the switching center (MSC) 40 to coordinate the connection between the base stations (BTS) 20, and the base station (BTS) 20 and the switching station ( MSC) 40 serves as a signal processing function for communication between.

The switching center (MSC) 40 includes a visitor location register (VLR) 50, which interworks with a home location register (HLR) 60 and a short message service message center (SMS MC) 70 to make mobile communication subscriber calls. Process.

The exchange station (MSC) 40 is connected to the control station (BSC) 30 to perform call setup and release functions of the mobile station (MS) 14, and performs various functions related to call processing and additional services. .

Visitor location register (VLR) 50 temporarily stores subscriber information associated with mobile station (MS) 14 while mobile station (MS) 14 is in an area controlled by visitor location register (VLR) 50. The mobile station (MS) 14 and the subscriber's information, which are registered in the area in which they are responsible, are taken from the home location register (HLR) 60 and temporarily stored, and are mounted in the switching center (MSC) 40. .

The Home Location Register (HLR) 60 is a database that is connected to an exchange center (MSC) 40 and a short message service center (SMSMC) 70 to manage various information of mobile subscribers. And the subscriber location registration function, and stores the permanent information and location information of the mobile station (MS) 14 and the subscriber, and interacts with the visitor location register (VLR) 50 to process the call. And various functions related to additional services.

The Short Message Service Center (SMS MC) 70 is connected to the switching center (MSC) 40 and the home location register (HLR) 60 to play a key role in the SMS routing function, to set SMS parameters, and to input messages. It analyzes the destination address of and transmits it to the corresponding network element. In particular, the short message service center (SMS MC) 70 transmits a signal input from the switching center (MSC) 40 to the measurement data server 80 when the message is set to the measurement data server 80.

Now, the telemetry device 10 is carried on a mobile object such as a car, a bus, etc., and the measured call quality measurement data is transmitted to the measurement data server 80 through an SMS message, and each telemetry device ( The process of collecting and analyzing call quality measurement data delivered in real time from 10) will be described in more detail.

The telemetry device 10 measures the call quality and transmits the measured data to the measurement data server 80 through a known wireless communication network.

The measurement data server 80 transmits the measurement conditions, start and end commands to the telemetry apparatus 10 in the form of an SMS message through a known wireless communication network. In addition, the call quality measurement data transmitted from the telemetry device 10 is collected and analyzed in real time in a useful form for the user.

The Short Message Service Center (SMS MC) 70 functions to send an SMS message to a mobile station (MS) 14 as part of a wireless communication network, or to receive an SMS message sent from a mobile station (MS) 14.

As shown in FIG. 2, the telemetry apparatus 10 is largely composed of a GPS part (GPS antenna, a GPS receiver, a GPS controller) and a mobile terminal (MS) part.

The GPS portion is a device for accurately determining the current position of the telemetry device 10.

The mobile terminal (MS) makes a short message service through the wireless communication network periodically by making an SMS message (measurement data) along with the status information (coordinate information and time information) from the GPS part while measuring the call quality information while continuing the call on the test channel. The message center (SMS MC) 70 is sent, and the short message message center (SMS MC) 70 transmits the transmitted SMS message (measurement data) to the measurement data server 80.

Now, the remote call quality automatic measurement method according to the present invention will be described in more detail.

Referring to FIG. 3, a measurement start and end process of a method for automatically measuring remote call quality according to an embodiment of the present invention will be described. First, the measurement data server 80 sends a message (SMS message) instructing to start measurement. (301), the telemetry device 10 measures the call quality measurement data (quality information, coordinate information) according to the period specified in the measurement start message and according to the period indicated by the measurement start message (preferably 1 minute). (SMS message) is transmitted to the measurement data server 80 (302). Here, the reason for transmitting not only the quality information but also the state information such as the coordinate information and the time information is generally because the remote measuring apparatus 10 is operated at the same time and is mounted on the moving object, such a remote from the measurement data server 80 This is because only if the current position and state of the measuring devices 10 are kept, the quality of call quality and the cause of poor quality of the wireless section can be analyzed in real time (see FIG. 5).

Thereafter, the measurement data server 80 stores the received call quality measurement data in the database 90. Then, the telemetry device 10 ends the measurement when the specified measurement completion condition is satisfied.

Next, the measurement data server 80 may determine whether the message is missing based on the serial number of the call quality measurement data (SMS message) transmitted from the telemetry device 10, and retransmits the missing message. The request message is transmitted to the telemetry device 10 (401 of FIG. 4). Thereafter, the telemetry apparatus 10 maintains a predetermined amount of the previously transmitted message (about 70 minutes), and then checks the message for retransmission and sends it to the measurement data server 80 (402 in FIG. 4).

On the other hand, the telemetry device 10 can generally be operated simultaneously at the same time, the measurement data server 80 needs to keep track of the current position and state of these telemetry devices (10). Therefore, the telemetry apparatus 10 transmits the position and the minimum state information of the terminal to the measurement data server 80 at predetermined time periods even when not in measurement (501 of FIG. 5).

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

The present invention as described above, by mounting the telemetry device on the mobile body can collect and analyze the periodic call quality measurement data from the telemetry device in real time, so that the problem occurring in the wireless environment can be immediately identified or effective In addition, since the telemetry device can be mounted on public transportation such as a bus or a taxi, it is possible to measure unmanned call quality in a wireless environment.

Claims (10)

In the call quality measurement system in a wireless communication system, According to the call quality measurement control command, periodically receive the state information (time information, coordinate information) from the satellite to synchronize the time, collect the quality information through the mobile terminal mounted on the moving object and the short service ( A plurality of call quality collection means for transmitting in real time through a known wireless communication network in the form of an SMS) message; The call quality measurement control command is transmitted to the plurality of call quality collecting means in the form of a short message service (SMS) message through the wireless communication network, and each call periodically transmitted from the plurality of call quality collecting means through the wireless communication network. Analyzing call quality by collecting quality measurement data (status information, quality information) in real time to analyze the status of call quality and cause of poor call quality, and extracting relevant call quality data from call quality storage means in real time Way; And The call quality storage means for storing and managing the results analyzed by the call quality analysis means and each call quality measurement data Automatic call quality measurement system comprising a. The method of claim 1, The plurality of call quality collection means, respectively Receiving means for amplifying the state information (coordinate information, time information) of the weak signal strength received from the satellite into a readable state; Synchronization acquisition means for transmitting the state information transmitted from the reception means to the mobile terminal in time synchronization with the satellite and the mobile terminal; And The mobile terminal is mounted on the mobile unit and collects the quality information of the wireless section and transmits the quality information together with the status information to the call quality analyzing means through the wireless communication network in the form of a short message service (SMS) message. Automatic call quality measurement system comprising a. The method according to claim 1 or 2, The call quality analysis means, It is determined whether the call quality measurement data in the form of short message (SMS) periodically transmitted from the plurality of call quality collection means, request for retransmission for the missing message, characterized in that the call quality automatic Measuring system. The method of claim 3, wherein The plurality of call quality collection means, Measure the call quality according to the call quality measurement control command (measurement start, end, measurement method instruction) of the call quality analysis means and transmit the measurement data to the call quality analysis means periodically, even when not in a predetermined time Automatic call quality measurement system, characterized in that for transmitting the position and the minimum state information of the terminal to the call quality analysis means every cycle. In the call quality measurement method in a wireless communication system, A first step of the measurement data server transmitting a call quality measurement control command (measurement start, end, measurement method indication) in the form of a short message service (SMS) message to a plurality of telemetry devices through a wireless communication network; A second, for collecting in real time each call quality measurement data (status information, quality information) in the form of a short message service (SMS) message transmitted from the plurality of telemetry devices through the wireless communication network according to a call quality measurement control command; step; And A third step of databaseting the call quality measurement data and analyzing in real time the current state of call quality and the cause of poor call quality based on the call quality measurement data; Automatic call quality measurement method comprising a. The method of claim 5, The fourth step of extracting the call quality data that the operator wants from the database and providing it in real time Automatic call quality measurement method further comprising. The method according to claim 5 or 6, The measurement data server, It is determined whether the call quality measurement data in the form of short message (SMS) periodically transmitted from the plurality of telemetry devices, the call quality automatic measurement, characterized in that the request for retransmission for the missing message is retransmitted Way. The method of claim 7, wherein The plurality of telemetry devices, It is mounted on the moving object and measures the call quality according to the call quality measurement control command (measurement start, end, measurement method instruction) of the measurement data server, and transmits measurement data to the measurement data server periodically, even when not in measurement. Method for automatically measuring the call quality, characterized in that for transmitting a predetermined time period of the terminal and the minimum state information to the measurement data server. In order to measure call quality, in a wireless communication system having a processor, A first function of transmitting, by the measurement data server, a call quality measurement control command (measurement start, end, measurement method indication) in the form of a short message service (SMS) message to a plurality of telemetry devices through a wireless communication network; A second, for collecting in real time each call quality measurement data (status information, quality information) in the form of a short message service (SMS) message transmitted from the plurality of telemetry devices through the wireless communication network according to a call quality measurement control command; function; And A third function of databaseting each call quality measurement data and analyzing in real time the current state of call quality and the cause of poor call quality based on the call quality measurement data; A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 9, 4th function that extracts the call quality data that the operator wants from database and provides in real time A computer-readable recording medium that records a program for further realization.