JPH0583180A - Reception disturbance prevention setting system in mobile radio communication - Google Patents

Abstract

PURPOSE:To allow a reception disturbance prevention countermeasures to cope simply with a propagation change by sending a test signal from an optional mobile base station and setting the prevention of a reception disturbance when the test signal is received by other mobile base station. CONSTITUTION:A central processing unit 24 starts, e. g. a mobile base station trunk 13 to activate a mobile base station 17 and an antenna 20 sends a test signal. The test signal is received by, e.g. an antenna 21 and reaches a mobile base station 18. In this case, the central processing unit 24 recognizes that the mobile base station requiring the reception disturbance countermeasure to the mobile base station 17 is the mobile base station 18 and writes the reception disturbance countermeasure data to a mixing amplifier control unit 10. While the reception disturbance countermeasure is set in this way, the base station designation switch 4 of a mobile command board 1 is operated to make a call from the mobile base station 17, then the mixing amplifier control unit 10 eliminates the reception output of the mobile base station 18 from the mixing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio reception interference setting method for mobile radio equipment used in a wide area using the same radio frequency.

[0002]

2. Description of the Related Art Conventionally, in a communication method for communicating with a large number of base stations and mobile stations using the same radio frequency in a wide area, the base stations overlap with adjacent base stations in order to eliminate a blind area. Have been installed.

In the case of this communication system, when a call is made from a certain base station, the call arrives at a base station adjacent to the base station, and the user can hear the voice spoken by himself, which may cause ringing and howling. As a method to prevent this, taking into account the propagation state of radio waves so as to prevent reception from other base stations that overlap the originating base station,
The contractor is setting the specified jumper.

[0004]

However, the above-mentioned conventional technique has a problem that the setting of the jumper must be changed when the propagation state of radio waves changes.

The present invention solves the above problems,
The purpose is to make it possible for users to easily respond to changes in the propagation of radio waves by using interference prevention measures.

[0006]

According to the present invention, in a mobile radio communication system for performing communication using the same radio frequency, a test signal is transmitted from any one of a plurality of mobile base stations transmitting and receiving radio signals, Another mobile base station detects whether the test signal is receivable, and based on the detection result, a setting for preventing reception interference is performed.

[0007]

The test signal is transmitted from any one of the plurality of mobile base stations transmitting and receiving radio signals. On the other hand, another mobile base station detects whether the test signal can be received. At this time, if reception is possible, it is recognized as a mobile base station that causes reception interference, and settings are made to prevent reception interference.

This makes it possible for the user to easily take a measure for preventing reception interference against changes in the propagation of radio waves.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, the movement command stand 1 performs operations for making and receiving calls from the mobile station 23. When the speaker 2 receives an incoming call from the mobile station 23, the voices from all the mobile base stations 17, 18 and 19 are mixed and output. The microphone 3 operates by using the press talk switch 6 when making a call to the mobile station 23.
The mobile base station designating switches 4 and 5 are provided corresponding to the mobile base stations of mobile radio, and can designate the mobile base station to be activated. The press talk switch 6 is used to put the mobile base station designated by the base station designation switches 4 and 5 into the transmission state. The movement command stand control unit 8 transmits information from the switches 4 to 7 to the movement command stand interface 11. The move command board interface 11 controls the move command board 1 and sends the transmission information to the specified mobile base station to the network 12.
To the mobile base station trunks 13 to 16 and the mixing amplifier control unit 10 via the. The mixing amplifier control unit 10 controls the mixing amplifier 9 based on the information sent from the central processing unit 24 and the information sent from the movement command stand interface 11.
The mobile base station trunks 13 to 15 are connected to the mobile base stations 17 to 19 by trunk lines. The antenna 20-
22 is installed so as to overlap in order to eliminate blind areas.

A description will be given of a case where the countermeasure for reception interference is set in the above configuration. When the reception interference countermeasure setting switch 7 is operated from the movement command stand 1, the movement command stand control unit 8 causes the movement command stand interface 1 to move.
1 is transmitted to the central processing unit 24 that the reception interference countermeasure setting start is started.

Then, the central processing unit 24 activates the mobile base station trunk 13, operates the mobile base station 17 connected to the trunk, and transmits a test signal from the antenna 20. Then, the test signal is received by the antenna 21 that requires countermeasures against reception interference, and arrives at the mobile base station 18. At this time, the mobile base station trunk 14 connected to the mobile base station 18 receives the call, and the central processing unit 24 determines that the mobile base station 18 is a mobile base station that needs countermeasures against reception interference to the mobile base station 17. Is recognized. Next, the central processing unit 24 writes the reception interference countermeasure data in the mixing amplifier control unit 10. If the above-described operation is manually or automatically performed for the currently installed mobile base station, the reception interference countermeasure data for the mobile base station can be set in the mixing amplifier control unit 10.

As described above, when the mobile station is operated by operating the base station designating switch 4 of the movement command stand 1 in the state where the countermeasure against reception interference is set, the movement command stand interface 11 mixes. A signal indicating that transmission is to be performed from the mobile base station 17 is sent to the amplifier control unit 10, and the mixing amplifier control unit 10 removes the reception output of the mobile base station 18 for which reception interference is set from the mixing, and other mobile base stations. The reception from is mixed and reproduced from the speaker.

When set in this way, the mobile base station 18 is subject to reception interference even if the mobile base station 17 makes a call.
The reception from the mobile base station 19 is prevented, and the incoming call from the mobile base station 19 in which reception interference does not occur can respond because the voice is played. Even if a mobile base station is added or relocated, this operation can immediately set the countermeasures against reception interference, so that the construction period can be shortened. further,
Since the interference prevention data may change depending on the radio wave condition at the time of setting, if it is configured so that the set data can be edited by operation on the board of the movement command stand 1 so as to be better in operation, operability and usability will be improved. Is improved.

[0015]

As described above, according to the present invention, it is possible to set reception interference prevention for one mobile base station and one mobile station, and to prevent interference from other areas that do not overlap even when one mobile station is calling. It becomes possible to receive an incoming call. Also,
Since the setting of the reception interference prevention is automatically performed, it is possible to easily cope with the relocation or extension of the mobile base station.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Movement command stand, 2 ... Speaker, 3 ... Microphone, 4, 5 ...
Base station designation switch, 6 ... Press talk switch, 7 ...
Reception interference setting switch, 8 ... Movement command board control unit,
9 ... Mixing amplifier, 10 ... Mixing amplifier control unit, 11 ... Movement command interface, 13-1
6 ... Trunk for mobile base station, 12 ... Network, 17
-19 ... Mobile base station, 20-22 ... Antenna, 23 ... Mobile station, 24 ... Central processing unit.

Claims (1)

[Claims] 1. In a mobile radio communication system for performing communication using the same radio frequency, a test signal is transmitted from any one of a plurality of mobile base stations transmitting and receiving radio communication, and the test signal is tested by another mobile base station. A reception jamming prevention setting method in mobile radio communication, which detects whether a signal is receivable and performs a setting to prevent reception jamming based on the detection result.