JP2019062275A - Digital mobile radio communication system and mobile station radio device - Google Patents

Abstract

To provide a technique of achieving volume adjustment without operator operation by causing a mobile station to calculate distance from a specific point and automatically perform reception volume setting according to the distance.SOLUTION: In a radio communication system 101, a command desk 23 of a center facility 20 registers a specific point in a base zone 90, and notifies a mobile station 30 of positional information on the specific point. In the mobile station 30, a specific point registration unit 42 registers the positional information on the specific point. A point distance calculation unit 44 calculates, from the positional information on the specific point and positional information on its own station by a position identification unit 36, distance between them. A reception volume adjustment unit 46 performs reception volume adjustment corresponding to the distance.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a digital mobile radio communication system and a mobile station radio apparatus.

  For example, various technologies are known as a public wireless communication system used at a fire fighting site. In this type of wireless communication system, a plurality of mobile stations (also referred to as "mobile station wireless devices") communicate with a communication console (or command console) connected to another mobile station or base station via the base station. (See, for example, Patent Document 1).

Unexamined-Japanese-Patent No. 2015-070387

  Generally, in the wireless communication system as described above, the mobile station performs the reception volume setting by operating the volume switch to the main body of the operator. The mobile station is operated to set the volume setting large at a point where the ambient environment noise is large, and set the volume setting small at a point where the ambient environment noise is small. That is, it has been essential that the operator adjust the reception volume setting of the mobile station according to the surrounding environment. Depending on the operating point, there are noise levels in the surrounding environment, and the operator needs to adjust the volume according to the situation, and the operation is cumbersome, and the volume adjustment can not be performed in relation to other operations. In some cases, technology for measures was required.

  The present invention has been made in view of such a situation, and an object thereof is to solve the above-mentioned problems.

The present invention is a digital mobile radio communication system comprising a control station and a mobile station radio apparatus and performing communication via a base station, wherein the control station transmits position information of a designated point to the mobile station radio apparatus. The mobile station radio apparatus notifies the mobile station wireless device of acquiring and recording the position information of the point, the position specifying unit specifying the position information of the self, the position information of the point, and the position information of the self From the above, a point distance calculation unit that calculates the distance to the point, and a reception volume adjustment unit that adjusts the audio output setting more greatly as the calculated distance becomes shorter.
The present invention is a digital mobile radio communication system including a control station and a mobile station radio apparatus, and performing communication via a base station, wherein the control station performs area information indicating the range of a designated area as the mobile station. The mobile station wireless device notifies the wireless device, the specific point registration unit for acquiring and recording the area information, the position specifying unit for specifying its own position information, and the area information and the own position information A point distance calculation unit that determines whether or not the device is in the area, and a reception volume adjustment unit that largely adjusts the audio output setting when the point distance calculation unit determines that the device is in the area And.
The present invention is a mobile station radio apparatus that communicates with a control station via a base station, and identifies a specific point registration unit that acquires and records position information of a specific point from the control station, and identifies its own position information. A point distance calculation unit that calculates a distance to the point from the position specifying unit, the position information of the point and the position information of the own, and a reception volume that adjusts the audio output setting to be larger as the calculated distance is shorter. And an adjustment unit.
The present invention is a mobile station radio apparatus that communicates with a control station via a base station, and includes a specific point registration unit that acquires and records area information indicating the range of a specific area from the control station, and position information of itself. The point distance calculation unit which determines whether or not the own device is present in the area from the position specifying unit which specifies the position information, the area information and the position information of the self, and the point distance calculation unit And a reception volume adjustment unit that greatly adjusts the audio output setting when it is determined that the device is present.

  According to the present invention, in the mobile station, the output can be automatically adjusted according to the surrounding environment regardless of the operator.

It is a figure which shows schematic structure of the radio | wireless communications system based on embodiment. It is a figure which shows the relationship between the specific point and the positional relationship of a mobile station based on embodiment, and the setting of receiving volume. It is the flowchart which showed the receiving sound volume adjustment operation | movement of a mobile station based on embodiment.

  Next, modes for carrying out the present invention (hereinafter, simply referred to as “embodiments”) will be specifically described with reference to the drawings.

  FIG. 1 is a diagram showing the configuration of a wireless communication system 101 according to the present embodiment. For example, the wireless communication system 101 is an emergency transmission digital wireless communication system not having a control channel, and is applied to a fire fighting wireless system used for fire fighting.

  The wireless communication system 101 has a control station 10 including a base station 12 and a mobile station 30 which is an example of a plurality of communication devices. The mobile station 30 is, for example, a vehicle-mounted station (vehicle-mounted wireless device), a mobile station (portable wireless device), a reception-only wireless device, or the like. The mobile station 30 is given an individual number and a group communication number. The numbers of base stations 12 and mobile stations 30 are not limited to the numbers shown in FIG.

  The control station 10 has a base station 12 and a center facility 20. The center equipment 20 has a communication console 22 connected to the line control device 21 and a command console 23 of command system devices.

  The outline of the present embodiment is as follows. The center equipment 20 registers a specific point in the wireless communication system 101 and notifies the mobile station 30 of position information. The specific point assumes, for example, a place where a case such as a fire or a traffic accident occurs. The mobile station 30 constantly grasps the current position of the mobile station based on the position information. The mobile station 30 calculates the distance between them from the “designated position information (specific point)” and the “current position of the own device”, and performs the reception volume adjustment according to the distance.

  At the specific point as described above, it is assumed that noise is generated by performing various operations or the like, increasing the crowd, and the like. Therefore, it is assumed that the noise of the surrounding environment is larger as the distance between the specific point and the mobile station 30 is closer, and the mobile station 30 sets the reception volume louder, and it is assumed that the noise of the surrounding environment is smaller as the distance is longer. Perform volume adjustment control to set the reception volume low.

  By this, it is possible to automatically adjust the reception volume according to the surrounding environment. That is, by adjusting the reception volume of the mobile station according to the distance to the specific point, the volume adjustment without the operation of the operator is realized.

  As a specific configuration, the line control device 21 of the center equipment 20 is connected to the communication console 22 and the base station 12 by wire, for example, and relays communication between them, and also controls connection of the communication line, etc. Perform various controls.

  The communication console 22 is used by an operator to perform data communication and calls, and can input various instructions and information.

  In the present embodiment, the command console 23 is a device that manages from reception of an emergency notification to a fire engine to completion of the activity, and issues commands to the fire station or the mobile station 30. The command console 23 can store various commands and information from the communication console 22 and various management information of the mobile station 30.

  The command stand 23 arbitrarily designates and registers a specific point in the wireless communication system 101 by the operation of the operator as a function characteristic to the present embodiment, and notifies the mobile station 30 of the position information. The specific point assumes, for example, a place where a case such as a fire or a traffic accident occurs. Also, the operator may designate not only a specific place but a specific area. In this case, the command console 23 notifies the mobile station 30 of the position information of the specific point including the area information indicating the range of the designated area.

  The base station 12 includes a transmitting antenna and a receiving antenna, and performs radio transmission and reception with the mobile station 30 present in the base zone 90. That is, the base zone 90 is a transmission / reception range (communication area) of the base station 12.

  The mobile station 30 includes a communication unit 32, an audio output unit 34, and a position specifying unit 36 as a basic configuration. The communication unit 32 selects a predetermined wireless carrier according to the communication with the base station 12 or the direct communication with another mobile station 30, and performs communication.

  The voice output unit 34 converts the received communication data into voice data and outputs the voice. The position specifying unit 36 is, for example, a GNSS device, and specifies the position of the own device. The position specifying unit 36 always specifies the position, particularly when the function is on, to know the position of the mobile station 30 (mobile station 30).

  In the base zone 90 of the base station 12, the frequency f2 is used as the downlink radio carrier of the base station 12, and the frequency f1 is used as the uplink radio carrier of the base station 12. Outside the base zone 90, the frequency f3 is used as a carrier for direct communication between the mobile stations 30. The respective frequencies f1, f2 and f3 are, for example, different frequencies.

  The mobile station 30 includes a voice level control unit 40 as a characteristic function in the present embodiment. The audio level control unit 40 includes a specific point registration unit 42, a point distance calculation unit 44, and a reception volume adjustment unit 46.

  The specific point registration unit 42 acquires and stores the position information of the specific point from the command stand 23 of the center facility 20.

  The point distance calculation unit 44 calculates the distance from the own device to the specific point from the acquired position information of the specific point and the position information of the own device calculated by the position specifying unit 36. When area information is included as position information of a specific point, it may be determined from the position information of the own device whether or not the own device is in the designated area.

  When the specific point is notified, the reception volume adjustment unit 46 adjusts the reception volume at the time of voice output from the voice output unit 34 according to the distance from the own device to the specific point. Specifically, the reception volume adjustment unit 46 adjusts the reception volume to increase gradually (or steplessly) as the specific point is approached.

  Point designation in the wireless communication system 101 (base zone 90) will be described with reference to FIG. FIG. 2 shows the relationship between the specific point and the positional relationship between the mobile station 30 and the setting of the reception volume.

  The command console 23 of the center facility 20 designates and registers an arbitrary point in the base zone 90 by the operation of the operator. Hereinafter, it will be referred to as "registration point A".

  The command station 23 transmits the position information of the registration point A to the mobile station 30 included in the wireless communication system 101, more specifically, the mobile station 30 existing in the base zone 90 via the wireless device of the base station 12. Notify

  In the mobile station 30, the position specifying unit 36 always registers and manages position information of the own device based on the GNSS reception signal. Hereinafter, it is called "registration information 1". Further, the specific point registration unit 42 registers and manages the position information of the registered point A designated by the center facility 20. Hereinafter, it is called "registration information 2".

  The point distance calculation unit 44 of the mobile station 30 calculates the distance between the own device and the registration point from the position information of the registration information 1 and the registration information 2. Hereinafter, this will be referred to as “calculated distance 1”.

The reception sound volume adjustment unit 46 has a setting value for changing the base level of the sound volume setting value according to the calculated distance 1. Hereinafter, "variable set value" is used. In this embodiment, three setting values (variable value 1 setting area, variable value 2 setting area, variable value 3 setting area) and no change of setting are provided as setting examples.
(1) Variable value 1 setting area:
Calculated distance 1 <0.5km 可 変 Variable setting value = 20dB increase setting (2) Variable value 2 setting area 0.5km 算出 Calculation distance 1 <1.0km 可 変 Variable setting value = 10dB increase setting (3) Variable value 3 setting area :
1.0km 算出 Calculation distance 1 <2.0km 可 変 Variable set value = 5dB increase setting
(4) No setting change area 2.0 km ≦ Calculation distance 1 可 変 Variable set value = No change

  The case where the mobile station 30 moves toward the registration point A in the order of “point A → point B → point C → point D” as shown in FIG. 2 will be described as an example.

"Mobile station volume setting at point A"
Since the point A is the position of the area without setting change (2.0 km ≦ the calculation distance), the reception sound volume adjusting unit 46 does not change the sound volume setting.

"Mobile station volume setting at point B"
The point B is a position of a variable value 3 setting area (1.0 ≦ calculation distance 1 <2.0 km). Therefore, the reception sound volume adjustment unit 46 applies “variable setting value = 5 dB increase setting”.

"Mobile station volume setting at point C"
Point C is located at a variable value 2 setting area (0.5 ≦ calculation distance 1 <1.0 km). Therefore, the reception sound volume adjustment unit 46 applies “variable set value 1 = 10 dB increase setting”.

"Mobile station volume setting at point D"
The point D is a position of a variable value 2 setting area (calculated distance 1 <0.5 km). Therefore, the reception sound volume adjusting unit 46 applies “variable setting value 1 = 20 dB increase setting”.

  FIG. 3 is a flow chart showing the reception volume adjustment operation of the mobile station 30. As shown in FIG. Based on this figure, the above-mentioned reception sound volume adjustment operation is briefly summarized and explained. As a premise, as described above, in the mobile station 30, the position specifying unit 36 always registers, manages and updates position information of the own device as registration information 1 based on the GNSS reception signal.

  In the mobile station 30, the specific point registration unit 42 acquires information of the registration point A from the command console 23 of the center facility 20 (S10), and registers the information as registration information 2 (S12). Subsequently, the point distance calculation unit 44 calculates the calculated distance 1 from the registration information 1 and 2 (S14).

  After calculation, the reception sound volume adjustment unit 46 performs mobile station sound volume setting according to the calculation distance 1. More specifically, first, the reception sound volume adjustment unit 46 determines whether or not “calculated distance 1 <0.5 km” (S16). If "calculated distance 1 <0.5 km" (Y of S16), the reception sound volume adjusting unit 46 applies "variable setting value 1 = 20 dB increase setting" in which the sound volume becomes largest (S18).

  If it is not "calculated distance 1 <0.5 km" (N of S16), the reception sound volume adjusting unit 46 determines whether or not "calculated distance 1 <1.0 km" which is a range wider than that ( S20). If “calculated distance 1 <1.0 km” (Y in S20), the reception sound volume adjusting unit 46 applies “variable setting value 1 = 10 dB increase setting” in which the sound volume setting is the second largest (S22).

  If it is not "calculated distance 1 <1.0 km" (N in S20), the reception sound volume adjusting unit 46 determines whether "calculated distance 1 <2.0 km", which is a range further wider than that. (S24). If "calculated distance 1 <2.0 km" (Y in S24), the reception sound volume adjusting unit 46 applies "variable setting value 1 = 5 dB increase setting" where the volume setting is the third largest (S26).

  If it is not "calculated distance 1 <2.0 km" (N in S24), the reception sound volume adjusting unit 46 applies "variable set value = no change" (S28).

  After the application of the variable setting value 1 (S18, S22, S26) or after the judgment of no change (S28), the specific point registration unit 42 judges whether the registration points are continuously recorded and managed ( S30), if continuing (Y of S30), the processing returns to the calculation of the calculated distance 1 (S14), and if the registration point is released (N of S30), the processing of this flow is ended.

  Thus, the mobile station 30 automatically adjusts the mobile station reception volume by changing the volume setting using the distance between the point (registration point) registered by the command console 23 of the center equipment 20 and the own apparatus. realizable. As a result, it is possible to eliminate the need for the operator to adjust the reception volume setting of the mobile station 30 in accordance with the surrounding environment as in the prior art, and the instruction is buried in noise and missed by adjustment forgetting. Can be avoided.

  When the point distance calculation unit 44 is configured to determine whether the own device is in the designated area, the reception volume adjusting unit 46 determines that the own device is in the designated area. In this case, the reception volume may be set high.

  In particular, when the incident point is clear as in the operation of the firefighting radio, the location where the mobile station 30 is used is often clear at the time of operation, and there are no disaster occurrence points (incident occurrence points) Because the noise of the surrounding environment is large, the mobile station reception volume tends to be set large. In contrast, at points away from the disaster occurrence point (around the fire department etc.), the mobile station reception volume tends to be set small because the noise of the surrounding environment is small. In such a situation, by going to the disaster occurrence point while setting the mobile station reception volume to a small setting, there is a possibility that the instruction from the center facility 20 (center command) may be heard, but in the present embodiment, Automatic volume control without operator control can eliminate such concerns.

  The present invention has been described above based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to the combination of the respective constituent elements, and such modifications are also within the scope of the present invention. For example, in the output adjustment function of the above embodiment, the voice output adjustment is performed to facilitate recognition according to the calculated distance, but in addition, in the mobile station 30 having a noise canceling function. Adjustment may be made to a setting that enhances the canceling effect as the specific point is approached. In addition, when the mobile station 30 is provided with a liquid crystal screen or the like, display output adjustment may be performed to intensify the contrast. That is, in a state in which a specific point is registered, as the operator of the mobile station 30 approaches that point, recognition becomes easy even if it does not particularly operate the voice and display outputted from the mobile station 30. Such adjustments should be made.

10 Control station 12 Base station 20 Center equipment 21 Line control device 22 Communication console 23 Command stand 30 Mobile station 32 Communication unit 34 Voice output unit 36 Position specification unit 40 Voice level control unit 42 Specific point registration unit 44 Point distance calculation unit 46 Reception Volume control unit 101 wireless communication system

Claims (4)

A digital mobile radio communication system comprising a control station and a mobile station radio apparatus and performing communication via a base station, comprising:
The control station notifies the mobile station radio apparatus of position information of a designated point,
The mobile station radio device
A specific point registration unit that acquires and records position information of the points;
A position identification unit that specifies position information of the user;
A point distance calculation unit that calculates a distance to the point from the position information of the point and the position information of the own device;
A reception volume adjustment unit that adjusts the audio output setting to a larger extent as the calculated distance is shorter;
A digital mobile radio communication system comprising: A digital mobile radio communication system comprising a control station and a mobile station radio apparatus and performing communication via a base station, comprising:
The control station notifies the mobile station radio apparatus of area information indicating a range of a designated area;
The mobile station radio device
A specific point registration unit for acquiring and recording the area information;
A position identification unit that specifies position information of the user;
A point distance calculation unit that determines whether or not the own device is in the area from the area information and the position information of the own device;
A reception volume adjustment unit that greatly adjusts an audio output setting when the point distance calculation unit determines that the own device is in the area;
A digital mobile radio communication system comprising: A mobile station radio apparatus that communicates with a control station via a base station,
A specific point registration unit which acquires and records position information of a specific point from the control station;
A position identification unit that specifies position information of the user;
A point distance calculation unit that calculates a distance to the point from the position information of the point and the position information of the own device;
A reception volume adjustment unit that adjusts the audio output setting to a larger extent as the calculated distance is shorter;
A mobile station radio apparatus comprising: A mobile station radio apparatus that communicates with a control station via a base station,
A specific point registration unit for acquiring and recording area information indicating the range of a specific area from the control station;
A position identification unit that specifies position information of the user;
A point distance calculation unit that determines whether or not the own device is in the area from the area information and the position information of the own device;
A reception volume adjustment unit that greatly adjusts an audio output setting when the point distance calculation unit determines that the own device is in the area;
A mobile station radio apparatus comprising:

Images