JP2002095028A - Wireless line connection control system for wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use the wireless line of high quality at all times, since it is difficult to hear a call and data cannot be transmitted satisfactorily, if the quality of the wireless line is poor in the line connection of a wireless communication system. SOLUTION: A measurement signal is transmitted from a control station to the wireless line connected to actual communication among the control station, base stations and a mobile station, and the mobile station returns the signal. The control station measures the returned measurement signal, and therefore only the wireless line of quality is used for connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio channel connection control system for a radio communication system.

[0002]

2. Description of the Related Art FIG. 2 shows a block diagram of a conventional radio communication system.

In the figure, 1 is a control station, 2 is a base station, 3 is a mobile station, and a plurality of base stations 2 are connected to the control station 1;
And the mobile station 3 perform wireless communication.

A conventional wireless communication system does not have a line connection control function based on the state of a wireless line, and a connection from a control station to a mobile station is made irrespective of the state of the wireless line.

[0005]

In the above-mentioned conventional radio communication system, the level fluctuation corresponding to the base station and the level fluctuation in the radio section directly affect the quality of the connection line. Even when the connection is established, there are drawbacks such as difficulty in listening to the call and inability to perform normal data transmission.

An object of the present invention is to eliminate these disadvantages and to always use a high-quality line.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a control station in which a measurement signal generator, a measurement signal measurement device, and a line for controlling line connection with a mobile station based on a value of a measurement signal. A connection control unit is provided, and the mobile station is further provided with a measurement signal return control unit that returns a measurement signal to the control station when receiving a measurement signal transmitted from the control station. The state of the wireless line can be grasped by performing the corresponding measurement.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.

1 is a control station, 2 is a base station, 3 is a mobile station, 4
Is a measurement signal generator connected to the transmission line of the control station, 5 is a measurement signal measurement device connected to the reception line of the control station, 6 is the measurement signal measurement device 5 which receives the measurement information and connects the line of the control unit. Is a line connection control unit for controlling the measurement signal return control unit, which returns the reception path and the transmission path of the mobile station 3, and the measurement signal return control unit 7.
Is connected to the receiving path, the measurement signal detecting unit 8 is connected, and upon receiving the measurement signal, operates the relay R to connect the receiving path to the transmitting path.

In the figure, a control station 1 sends a measurement signal from a measurement signal generator 4 to a transmission path, and a control section 1 sends the measurement signal to a base station 2. The base station 2 sends a measurement signal to the mobile station 3, and the measurement signal is transmitted to the reception path via the wireless device and the control unit in the mobile station 3.

In the mobile station 3, when the measurement signal detector 8 of the measurement signal return controller 7 detects the measurement signal from the control station 1, the relay R operates to connect the reception path to the transmission path. The measurement signal return control unit 7 returns the measurement signal to the transmission path, and the mobile station 3 sends the measurement signal to the base station 2 via the control unit and the radio.

The measurement signal received by the base station 2 is transmitted to the control station 1
Is transmitted to the receiving channel via the control unit. Measurement signal measuring instrument 5
Measures the level of the measurement signal returned by the mobile station 3 at
The measurement information is sent to the line connection controller 6.

The line connection control unit 6 stores the measurement results for each base station corresponding to the radio channel, and transmits the results from the control station 1 to the mobile station 3.
When connecting to a mobile station, use only the line with the measurement signal value larger than the predetermined value for connection with the mobile station, and do not use the line with the measurement signal value smaller than the predetermined value for connection with the mobile station. .

[0014]

According to the present invention, since only a high-quality line is used, good communication and data transmission can always be performed.

[Brief description of the drawings]

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

FIG. 2 is a block diagram of a conventional wireless communication system.

[Explanation of symbols]

1: control station, 2: base station, 3: mobile station, 4: measurement signal generator, 5: measurement signal measurement device, 6: line connection control unit, 7:
Measurement signal return control unit, 8: measurement signal detection unit.

Claims (1)

[Claims] 1. A wireless communication system comprising a base station connected to a control station to which a plurality of base stations are connected and a plurality of mobile stations performing wireless communication using a plurality of wireless lines. In the system, the control station is provided with a measurement signal generator, a measurement signal measurement device, and a line connection control unit for controlling the line connection with the mobile station based on the value of the measurement signal, and the mobile station is transmitted from the control station. By providing a measurement signal return control unit that returns the measurement signal to the control station when the measurement signal is received, the control station transmits the measurement signal corresponding to a plurality of lines of each base station and returns the value of the measurement signal returned by the mobile station. Is measured, and the values of the measurement signals are stored in correspondence with the plurality of lines of each base station, and only the lines where the values of the measurement signals are larger than a predetermined value are used for connection with the mobile station. Less than a predetermined value A wireless line connection control method for a wireless communication system, wherein a line is not used for connection with a mobile station.