JPH06181587A - Mobile radio system - Google Patents

Abstract

PURPOSE:To directly make direct access from an electronic private branch exchange to a radio channel network. CONSTITUTION:A connection information common controller 16 is provided in the private branch exchange 10 and speech path trunks 41-4n can transmit/ receive a control information communication band and a speech path band. In the connection information common controller 16, only connection control information signals inside the control information communication band are separated from the respective trunks and made common. Thus, since the connection control information signals in the respective trunk are separated and are made common, direct communication to a traveling object is enabled and access time can be shortened. Then, just by adding subscriber's numbers to the connection control information signals, calls can be directly terminated to pertinent extension subscribers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic private branch exchange, and more particularly to an electronic private branch exchange used for mobile communication.

[0002]

2. Description of the Related Art Generally, in an electronic private branch exchange used for mobile communication, an individual outgoing / incoming trunk dedicated to wireless communication is used to send and receive to / from a wireless network through a wired communication line.

[0003]

As described above, in the conventional electronic private branch exchange, it is necessary to pass through a wired communication line by a wireless communication line network, that is, a trunk for exclusive use of wireless communication when making a call to or from a mobile unit. However, there is a problem that the connection time for accessing the wireless network from the electronic private branch exchange increases.

In addition, since a conventional trunk for wireless communication is used for outgoing and incoming calls, there is a problem that it is not possible to make an incoming call directly to the corresponding extension subscriber.

An object of the present invention is to provide a mobile radio system capable of directly accessing the radio network and shortening the access time to the radio network.

Another object of the present invention is to provide a mobile radio system capable of directly receiving an extension subscriber.

[0007]

According to the present invention, a base station, a plurality of mobile units, and a private branch exchange are provided,
In a mobile radio system in which radio communication between the base station and the mobile unit is performed in a control information communication band and a communication channel band, the private branch exchange is recognized by the base station as one of the mobile units. The private branch exchange has first means for transmitting and receiving in the control information communication band and the communication path band for each trunk, and a connection control information signal transmitted and received in the control information communication band for each trunk. And a second means which is separated from the above and is made common.

[0008]

EXAMPLES The present invention will be described below with reference to examples.

Referring to FIG. 1, an extension telephone 12 is connected to an electronic private branch exchange 10 via a subscriber circuit (L / C) 11 (actually, there are a plurality of extension telephones in the private branch exchange). Each is connected through a subscriber circuit,
In FIG. 1, only the subscriber circuit 11 and the extension telephone 12 are shown), and the private branch exchange 10 is connected to a base station radio equipment (not shown) via a radio line. Similarly, a plurality of mobile units are connected to the base station radio unit via radio lines. The base station radio apparatus recognizes the private branch exchange 10 as one of the mobile units.

Here, referring also to FIG. 2, the private branch exchange 10
From the base station wireless device to the mobile station,
The extension telephone 12 is off-hook. As a result, the subscriber circuit 11 is activated and the central processing unit (CPU) 13
Of the extension telephone 12 by the control of the time division switch (TD
It is connected to the register (REG) 15 via the SW) 14. In this state, the caller (extension telephone) hears the dial tone from the private branch exchange 10 and dials the calling number from the extension telephone 12 to the mobile body. This calling number is received by the register 15. When the calling number is received, CPU1
In 3, the oscillator (T) of the connection information common control device 16 sends a transmission request signal to the base station wireless device by the mixer (MIX) 17 via the wireless line.

In the base station radio equipment, in response to the call origination request signal, the channel number (CH No.) used for establishing communication is established.
And the wireless line number (ID No.) to the private branch exchange 10. These channel numbers and wireless line numbers are received by the receiver (R) of the connection information common control device 16 via the mixer 17.

When the connection information common control device 16 receives the channel number and the wireless line number, the call path trunk (S
-TRK) If the state of any one of the call path trunks 41 to 4n is in a connectable state after confirming the state of each of the call channel trunks 41 to 4n, the connection information common control device 16 determines the wireless line number (ID N
o. ) And subscriber number (EX No.)
To the base station wireless device.

As described above, the connection preparation state is established,
In response to the selection signal request signal transmitted from the base station wireless device, the CPU 13 causes the subscriber circuit 11 and the communication trunk 4 to operate.
One of 1 to 4n (hereinafter referred to as a connected communication path trunk) is connected via the time divisional switch 14. On the other hand, in the connection information common control device 16, the connection speech trunk is activated by a command from the CPU 13, and the channel number is set by the channel setting oscillator (PLL) in the connection speech trunk.

Then, in the same way as the connection processing in mobile communication, the private branch exchange 10 sends a selection signal (origination number) to the base station radio equipment, and the base station radio equipment returns a ringing tone.

Referring to FIG. 1 and FIG. 3, when a call is received from the base station radio equipment to the private branch exchange, a call signal sent from the base station radio equipment is sent via the mixer 17 to the connection information common control equipment 16. It is received by the receiver (R). In response to the call signal, the connection information common control device 16 sends a call response signal to the base station wireless device via the mixer 17 by the transmitter (T). Then, the base station wireless device sends a call response signal to the private branch exchange 10 with the channel number (CH No.), the wireless line number (ID No.), and the subscriber number (EX No.). These pieces of information are received by the receiver (R) of the connection information common control device 16 via the mixer 17, and the connection information common control device 16 outputs the wireless line number (ID No.) and the subscriber number (EX No.) to the CPU 13. Transfer to. The CPU 13 confirms the states of the extension telephones and the communication path trunks 41 to 4n based on the wireless line number (ID No.) and the subscriber number (EX No.). When one of the corresponding extension telephones and the communication path trunks 41 to 4n is in the connectable state, the CPU 13 transfers the information indicating the connectable state to the connection information common control device 16 as the connectable information. In response to the connectable information, the connection information common control device 16 sends the wireless line number (ID No.) and the subscriber number (EX No.) to the base station wireless device via the mixer 17 by the transmitter (T). send.

As a result, the base station radio device sends a ringing tone signal to the private branch exchange 10. This ring tone signal is sent via the mixer 17 to the connection information common control device 16
Is received by the receiver (R) and transferred to the CPU 13.
Then, the CPU 13 connects the corresponding subscriber circuit and one of the call path trunks 41 to 4n (hereinafter referred to as a connected call path trunk) through the time division switch 14.

On the other hand, the connection information common control device 16 sends out the channel number (CH No.) to the connection channel trunk and uses the PLL in the connection channel trunk to transmit the channels of the transmitter (T) and the receiver (R). Make settings.

[0018]

As described above, according to the present invention, the function of transmitting / receiving the control information communication band and the communication path band to / from the private branch exchange,
Since the connection control information signal sent in the control information communication band is separated and made common, and the function of processing this connection control information signal is provided, the connection time can be significantly shortened.

In addition, since the subscriber number can be added in the connection control information signal and the subscriber number added in the connection control information signal can be identified, it is possible to directly call the extension subscriber. is there.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an electronic private branch exchange used in a mobile radio system according to the present invention.

FIG. 2 is a diagram for explaining outgoing connection control from a private branch exchange to a base station.

FIG. 3 is a diagram for explaining incoming connection control from a base station to a private branch exchange.

[Explanation of symbols]

 10 electronic private branch exchange 11 subscriber circuit (L / C) 12 extension telephone 13 central processing unit (CPU) 14 time division switch (TDSW) 15 register (REG) 16 connection information common control unit (CPC) 17 mixer (MIX)

Claims (3)

[Claims] 1. A base station and a plurality of mobile units and a private branch exchange are provided, and wireless communication between the base station and the mobile units is performed in a control information communication band and a communication path band. In a mobile radio system, the private branch exchange is recognized by the base station as one of the mobile units, and the private branch exchange performs transmission / reception in the control information communication band and the communication path band for each trunk. And a second means for separating and commonizing the connection control information signals transmitted and received in the control information communication band from the trunks. 2. The mobile radio system according to claim 1, wherein the connection control information signal includes a radio line number signal, and the private branch exchange adds a subscriber number to the connection control signal. A mobile radio system comprising the following means. 3. The mobile radio system according to claim 1, wherein the connection control information signal is a signal in which a subscriber number is added to a radio line number, and the private branch exchange identifies the subscriber number. A mobile radio system comprising a fourth means.