JP2002280949A - Wireless mobile communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless mobile communication system where a maintenance person can automatically conduct a voice continuity test, without his coming from and going to a base zone. SOLUTION: A general-purpose personal computer 113B and a test unit 151 in an operations center store the same voice data. Then the general-purpose personal computer 113B allows a semi-fixed terminal 113 to automatically send/ receive a call. The test unit 151 in the operations center allows a control station 140 to automatically send/receive a call. As a result, for example, when the voice data stored in the general-purpose personal computer 113B are converted into voice and the semi-fixed terminal 113 transmits the voice to the test unit 151 in the operations center, the test unit 151 in the operations center recognizes the voice received by the semi-fixed terminal 113 and converts the voice into a text character stream. Furthermore, by collating the converted text character stream with a text character stream, corresponding to the voice data stored in the test unit 151 in the operations center for determining whether they match, so as to conduct voice continuity test.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a voice continuity test for a wireless mobile communication system including mobile terminals.

[0002]

2. Description of the Related Art In recent years, wireless mobile communication systems, such as mobile phones and PHSs, have been rapidly developing. As a wireless mobile communication system that has been put into practical use, a control station that controls a wireless communication line, and a wireless terminal station (wireless mobile terminal station or wireless fixed terminal station) under the control of the control station. 2. Description of the Related Art A wireless mobile communication system including one or a plurality of wireless base stations that perform relay and maintenance of a service area and a plurality of wireless terminal stations that perform wireless communication via the wireless base stations is known.

In such a radio mobile communication system, when a radio terminal station (hereinafter, called a calling station) performs radio communication with another radio terminal station (hereinafter, called a called station), a call is issued. The station performs wireless communication using a wireless communication line (communication channel) controlled by a control station via the wireless base station in a service area in which the wireless base station maintains a wireless communication range.

A radio mobile communication system, of course, uses public radio waves, and it is necessary for a system provider, regardless of public or business use, to strictly manage and monitor radio waves. is there.

[0005] In general, in the service of the wireless mobile communication system, the wireless communication system is used during a time period during which communication traffic is small for public use, or during a time period other than business hours (for example, at night or on holidays) for business use. It is necessary to perform maintenance and inspection of the communication line (confirm the operation of the radio base station and the radio terminal station that emit radio waves). Hereinafter, general maintenance / inspection in a commercial wireless mobile communication system, which is an example of the related art, will be described in time series with reference to FIGS.

First, the operation of the conventional business radio mobile communication system during normal operation will be described with reference to FIG. In the figure, 210, 211 and 212 represent wireless mobile terminal stations. (Hereinafter, a wireless mobile terminal station will be referred to as a mobile terminal.) 220, 221, and 222 represent wireless base stations.
Generally, a radio base station has a function of performing bidirectional communication with a mobile terminal using radio waves and managing radio waves, which are finite resources. However, the range in which radio waves from a wireless base station reach (hereinafter, referred to as a base zone) is limited. FIG. 2 shows each radio base station (radio base stations 220 and 22).
1, 222). Base zone 230,
231 and 232 are wireless base stations 220 and 221, respectively.
This is the range in which radio waves from 222 reach. Mobile terminal 210,
211 and 212 are radio base stations 220 and 221, respectively.
It is assumed that it is under the management of 222. Reference numeral 240 represents a control station of the wireless mobile communication system, and the wireless base station 220,
221 and 222 and the control station 240 are connected by an approach line. When there are a plurality of radio base stations, the control station 2
Reference numeral 40 has a function for comprehensively managing these wireless base stations. Further, reference numeral 250 denotes a command center, and the terminal 251 in the command center 250 and the control station 240 are connected by a security network extension.

[0007] With the above-described configuration, communication between mobile terminals including the command center 250 is possible, and the mobile terminal is normally operated for business execution.

Next, a state when each mobile terminal has completed normal operation (operation) in the conventional business radio mobile communication system will be described with reference to FIG. In each of the base zones, the mobile terminals that have completed their daytime operations gather at the command center 250. It is assumed that the command center 250 is not in the range of the base zones 230 to 232. The voice continuity test is performed after normal operation (operation).

Referring to FIG. 4, a description will be given of a voice continuity test performed in a conventional business mobile radio communication system using a time zone other than business hours such as nights and holidays. FIG. 4 is a diagram illustrating maintenance and inspection of a mobile terminal by a voice continuity test. That is, in FIG.
Since 0 is out of the range of the base zones 230 to 232, it is not possible to check whether the radio of the mobile terminal uses the allocated radio wave while staying at the command center 250, for example.

[0010] Therefore, the maintenance and inspection of the mobile terminal is carried out after a maintenance person different from a normal operator has moved together with the mobile terminal to the area of a specific base zone that needs to be inspected, and then to another mobile station or command center. This is done by communicating with.

FIG. 4 shows a system including a wireless communication line by performing a voice continuity test with a maintenance staff B in the command center 250 after the maintenance staff A has moved within the range of the base zone 232 together with the mobile terminal 212. It shows that maintenance and inspection are being carried out (bold line in the figure).

[0012] Further, when performing maintenance and inspection of the system by performing a voice continuity test between mobile terminals,
Naturally, a plurality of maintenance personnel need to move together with the mobile terminal to within a specific base zone.

[0013]

In the above-mentioned prior art,
When performing maintenance and inspection of a system including a wireless communication line, there is a disadvantage that a maintenance person must always carry a mobile terminal to perform a voice continuity test.

In particular, when there are a large number of wireless base stations, the number of base zones increases accordingly, so that there is a disadvantage that the burden on maintenance personnel when conducting a voice continuity test is inevitably increased. In addition, if the number of maintenance personnel is small, there is a disadvantage that the burden of the voice continuity test is further increased.

Therefore, in order to eliminate these disadvantages, the present invention has a first object to enable a maintenance person to automatically perform a voice continuity test of a system including a wireless communication line without having to travel between base stations. Aim.

It is a second object of the present invention to enable the command center to count the results of the voice continuity test.

[0017]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention provides at least one semi-fixed terminal (a mobile terminal which is a fixed terminal only when performing a voice continuity test) and A first control device for storing data and controlling a call operation at the time of transmission and a call operation at the time of reception by the control station; and a call control operation at the time of transmission and reception by the semi-fixed terminal for storing voice data and storing the voice data. A second control device for controlling a call operation is provided. Then, the same audio data is stored in the first and second control devices. For example, when the first control device converts the audio data into audio and transmits the audio to the semi-fixed terminal, the audio received by the semi-fixed terminal is converted to the second audio. Of the present invention, it is possible to determine whether or not they are the same by collating the converted text character string with the text character string corresponding to the voice data by performing voice recognition by the control device and converting the converted text character string to the text character string corresponding to the voice data. Things. As a result, the voice continuity test can be automatically performed. Note that the semi-fixed terminal may be provided for a voice continuity test, but a mobile terminal used during business hours may be used as a semi-fixed terminal during a voice continuity test. Further, according to the present invention, in order to achieve the second object, the first control device and the second control device are connected to each other via a communication line (public line or private line). The result of the obtained voice continuity test can be transmitted to the first control device. By installing the first control device at the command center, the results of the voice continuity test can be totaled at the command center.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing a commercial wireless mobile communication system according to an embodiment of the present invention, basic matters related to the present invention will be described.

In recent years, speech recognition technology has been remarkably advanced due to a dramatic improvement in personal computer performance. Along with this, for example, even an operator who is not good at keyboard input of a personal computer has a function of operating the personal computer just by talking to the display (for example, displaying what the operator has spoken on the display). ing.

In the present invention, a voice continuity test of a wireless mobile communication system is automatically performed by using software called "dictation software" utilizing the voice recognition technology.

Here, dictation software will be briefly described. Dictation software is what is called a "voice word processor". When speaking into a microphone connected to a personal computer, the dictation software converts the spoken word into a text string. In the wireless mobile communication system according to the present invention, a first control device (for example, a personal computer) for controlling the calling / incoming operation of the control station, and a semi-fixed terminal (a mobile terminal that is a fixed terminal only when performing a voice continuity test) 2) a second control device (for example, a personal computer) for controlling the calling / incoming operation of
Is provided. The semi-fixed terminal may be provided for a voice continuity test, but a mobile terminal used during business hours may be used as a semi-fixed terminal during a voice continuity test. When there are a plurality of semi-fixed terminals, one second control device is provided for each semi-fixed terminal. Before performing the voice continuity test, the first control device (for example, a personal computer) or the second control device (for example, a personal computer) is operated to set the calling time of the control station or the semi-fixed terminal. When the voice continuity test is performed, the first control device (for example, a personal computer) or the second control device (for example, a personal computer) automatically causes the control station or the semi-fixed terminal to make a call at the time of calling. Make a call. For example, if the first controller is a calling controller and the second controller is a called controller, the first controller
After converting the voice data stored in advance in the control device into a voice signal, the calling station (control station) is caused to make a call at a set time, thereby transmitting the signal to the called station (semi-fixed terminal). When the called station (semi-fixed terminal) receives a call, the called-side control device (second control device) performs speech recognition on the received voice signal by the stored dictation software and converts it into a text character string. After the conversion, this text character string is collated with a text character string corresponding to voice data stored in advance to determine whether or not they are the same. With this determination, a call test (voice continuity test) in maintenance / inspection of a system including a wireless communication line can be performed without the involvement of maintenance personnel. Further, in the wireless mobile communication system of the present invention, for example, when a voice continuity test is performed with a control station as a calling station and a semi-fixed terminal as a called station, the result of the voice continuity test is transmitted to a second communication line such as a public line. From the first control device
By transmitting the results to the control device (installed in the command center), the results of the voice continuity test at the command center can be compiled into a database.

Following the basic matters described above, a radio mobile communication system according to an embodiment of the present invention will be described with reference to FIG.

In FIG. 1, reference numerals 110, 111, and 112 denote wireless mobile terminal stations (hereinafter, wireless mobile terminal stations are referred to as mobile terminals), and reference numeral 113A denotes a wireless semi-fixed terminal station (hereinafter, wireless semi-fixed terminal stations are semi-fixed). Terminal). In the figure, the mobile terminals 110, 111, and 112 have already completed their normal daytime operations (operations) and have gathered at the command center 150 (the command center 150 will be described later). .

Reference numeral 113B denotes a general-purpose personal computer, which is connected to the semi-fixed terminal 113A. Reference numeral 113 denotes a semi-fixed-side test device. The semi-fixed-side test apparatus 113 operates as a fixed station only when the audio continuity test is performed at a time other than business hours, for example, by being installed in a business office. 120, 1
21 and 122 are wireless base stations of the wireless mobile communication system. Generally, a radio base station performs two-way communication with a mobile terminal using radio waves and manages radio waves, which are limited resources. However, the range in which radio waves from a wireless base station reach (hereinafter, referred to as a base zone) is limited. FIG. 1 shows a base zone of each wireless base station (wireless base stations 120, 121, 122). The base zones 130, 131, and 132 are ranges in which radio waves from the radio base stations 120, 121, and 122 respectively reach. It is assumed that the mobile terminals 110, 111, 112 are under the control of the radio base stations 120, 121, 122, respectively. In this drawing, the semi-fixed side test device 113
Indicates a state where the base zones 130, 131, and 132 are installed in an overlapping area (a common communication area of the wireless base stations 120, 121, and 122). Reference numeral 140 denotes a control station of the wireless mobile communication system.
0, 121, 122 and the control station 140 are connected by an approach line. When there are a plurality of radio base stations, the control station 140 has a function for managing these radio base stations comprehensively. Further, reference numeral 150 denotes a command center, and a test device 151 in the command center, which is a general-purpose personal computer, is connected to the control station 140 via a security network extension. The test device 151 in the command center is connected to the general-purpose personal computer 113B of the semi-fixed-side test device 113 via a communication line such as a public line, and is in a state where personal computer communication is possible.

In the wireless mobile communication system of this embodiment, for a voice continuity test performed during a time period other than business hours, such as at night or on holidays, the semi-fixed side test device 113 makes a call and the control center test device 151 terminates the call. A case where a call is made will be described. Generally, mobile terminals and semi-fixed terminals have a radio base station selection function. With this radio base station selection function, it is assumed that the semi-fixed terminal 113A of the semi-fixed-side test apparatus 113 installed in the set portion where the base zones overlap (common communication area of the radio base station) has selected the radio base station 120. explain.

First, a call is made to the semi-fixed terminal 113A using the general-purpose personal computer 113B in the semi-fixed test apparatus 113. (The semi-fixed terminal 113A automatically makes a call at the time set by the general-purpose personal computer 113B.)
Specifically, with the general-purpose personal computer 113B, the semi-fixed terminal 11
The part corresponding to the 3A press button is controlled. At this time, the semi-fixed terminal 113A transmits a transmission right acquisition request to the wireless base station 120 via the wireless communication line. The radio base station 120 sends the transmission right acquisition request of the semi-fixed terminal 113A,
The signal is transmitted to the control station 140 via the approach line. When there are a plurality of transmission right acquisition requests transmitted to the control station, the transmission right acquisition request transmitted earlier is accepted. Here, it is assumed that the transmission right acquisition request of semi-fixed terminal 113A has been accepted. A control signal such as a transmission right acquisition request is transmitted to a processor (not shown in FIG. 1) in the control station 140.
After it has been accepted, it is processed. Now, it is assumed that the semi-fixed terminal 113A has acquired the transmission right. in this case,
The uplink communication path is controlled by the control station 140 by the radio base station 1.
Only the communication path from 20 is connected.

Next, the operation of the voice continuity test after the communication path has been established will be described. The voice continuity test is performed by collating a predetermined short sentence. In brief, in the semi-fixed-side test device 113 serving as the transmitting side,
Semi-fixed terminal 11 transmits voice data from general-purpose personal computer 113B.
Input to 3A and send. In addition, the test apparatus 151 in the command center on the receiving side identifies the received voice and verifies the original text. As a voice identification method on the receiving side, software that converts the content into a text string when speaking into the microphone (this is called "dictation software") is used. That is, the voice data corresponding to the text character string of the short sentence voice used for the test is stored in advance in the control center test device 151 on the receiving side, and the text character dictated by the command center test device 151 is stored. Enable collation with columns. This operation will be described in more detail.

First, the voice input from the general-purpose personal computer 113B to the semi-fixed terminal 113A is transmitted through the radio communication line and input to the radio base station 120. As described above, since the communication channel has already been set by acquiring the transmission right, the voice signal is transmitted from the radio base station 120 via the approach line and input to the control station 140. The voice signal input to the control station 140 is transmitted through a security network extension or the like, and is input to the command device 151 in the command center. The input voice is
It is converted to a text string by voice recognition by dictation software. The converted text character string is collated with the text character string corresponding to the voice data stored in advance in the test device 151 in the command center to determine whether or not the text character string is the same. (Testing equipment 15 in command center
1 stores audio data similar to the audio data stored in the general-purpose personal computer 113B. The transmitting general-purpose PC 113B, the transmitting semi-fixed terminal 113A,
An example of the operation of the receiving-side radio base station 120 and the test apparatus 151 in the receiving-side command center is shown in time series in the following (1) to (4).

(1) Sender-side general-purpose personal computer 113B: A voice "Bread is a Portuguese message" is input to the semi-fixed terminal 113A. (2) Semi-fixed terminal 113A on the transmitting side: “Bread is transmitted by Portuguese” is transmitted to the radio base station 120. (3) Reception-side radio base station 120: Receiving ("xx" is noise) that "Pan is transmitted by Porto xx", and transmitting it to the test device 151 in the command center. (4) the receiving side commander center in the test device 151: (4-1) "Bread is what Porto guiro people told."
(4-2) The above identified character string is compared with the original character string, which is the same character string as in (1), "Bread is a Portuguese message."

(4-3) The collation rate xx% is calculated. The calculation result is stored as it is in the command center 150 as a database. In the above example, the state where the semi-fixed-side test device 113 makes a call and the call is received by the control center test device 151 is shown.
Of course, a voice continuity test in the reverse direction (= downward communication path) can also be performed. That is, the test device 15 in the command center
It is also possible to carry out a voice continuity test in which a call is made and a call is received by the semi-fixed test device 113. In this case, the collation rate calculated by the general-purpose personal computer 113B in the semi-fixed-side test equipment 113 is compared with the test equipment 15 in the command center by personal computer communication.
Since the command center 150 also has the function of notifying the command center 1, the command center 150 can sum up the results of the voice continuity test and create a database. And this database can be used effectively.

In the above embodiment, the radio base station 12
0 to 122 common communication area (base zones 130 to 13)
In the above example, the semi-fixed-side test apparatus 113 is installed in the area where the 2 overlaps, so that one semi-fixed-side test apparatus can communicate with each wireless base station. It is not something to be done. If the base zones do not overlap and there is no common communication area, install a semi-fixed-side test device corresponding to each base zone (because a general-purpose personal computer can be reduced in weight if it is a notebook), It is also possible to periodically move the semi-fixed side test apparatus to each base zone to perform a voice continuity test.

As described above, in the voice continuity test method of the wireless mobile communication system of this embodiment, a voice continuity test can be automatically performed by connecting a general-purpose personal computer to the semi-fixed terminal and the control station. . Further, the voice continuity test results can be tabulated at the command center.

[0033]

As described above, according to the present invention,
It is possible to provide a wireless mobile communication system capable of automatically performing a voice continuity test without maintenance personnel coming and going between base zones.

Further, the voice continuity test is periodically performed, and the results of the voice continuity test can be totaled and stored as a database, thereby statistically estimating an area or time zone in which a trouble occurs during a call. can do. As a result, it is possible to provide a wireless mobile communication system that leads to preventive maintenance of a failure.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a business wireless mobile communication system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a commercial wireless mobile communication system as an example of the related art.

FIG. 3 is a diagram showing a state of a mobile terminal when a business is completed in a business-use wireless mobile communication system as an example of the related art.

FIG. 4 is a diagram showing maintenance and inspection of a mobile terminal by a voice continuity test in a commercial wireless mobile communication system as an example of the related art.

[Explanation of symbols]

110, 111, 112: mobile terminal 113: semi-fixed side test apparatus 113A: semi-fixed terminal 113B: general-purpose personal computer 120, 121, 122: wireless base station 130, 131, 132: base zone 140: control station 150: command center 151 : Test equipment in command center (general-purpose personal computer) 210, 211, 212: Mobile terminals 220, 221, 222: Radio base station 230, 231, 232: Base zone 240: Control station 250: Command center 251: Terminal in command center A , B: maintenance personnel

Claims (2)

[Claims] 1. A wireless mobile communication including a control station, one or more base stations connected to the control station via a wired line, and a plurality of mobile terminals connected to the base station via a wireless line. In the system, a first control device connected to the control station, which stores voice data and controls a call operation at the time of transmission and a call operation at the time of reception of the control station; A second control unit connected to the terminal and storing the same voice data as the voice data stored in the first control device and controlling the calling operation at the time of transmission and the reception operation at the time of reception of the mobile terminal; The first and second control devices convert the voice data into voice during a calling operation and output the voice data to the control station and the mobile terminal, respectively, and output the voice received during the incoming call operation. Text sentence with speech recognition It is configured to perform a voice continuity test automatically by collating the converted text character string with a text character string corresponding to the voice data to determine whether they are the same and converting the text string into a string. Wireless mobile communication system. 2. The voice continuity test obtained by the second control device, wherein the first control device and the second control device are connected via a communication line in the wireless mobile communication system according to claim 1. A result of transmitting the result to the first control device and totalizing the result.