JPH0667006B2 - Radio link control method for mobile radio - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field" The present invention relates to a plurality of wireless connection devices having a wireless device having a multi-channel access function, in which a wireless channel includes at least one control channel and a plurality of communication channels. The present invention relates to a mobile radio radio line control method in which a switching device for performing the circuit exchange is inserted between a fixed line network and a fixed line network so that there is always one radio connection device in a call processing accepting state.

[Prior Art] Conventionally, in this type of wireless line control method, a wireless line control device, which is a higher-level station that organizes wireless connection devices, manages the state of the wireless connection device, and the wireless line control device receives the call processing acceptance state. When the wireless connection device in
An instruction was sent to select another wireless connection device that is not in a call state and shift to a call processing acceptance state.

Therefore, the control on the wireless line control device side is complicated, and even when the wireless connection device is added, it is necessary to change the management table related to the wireless line control device on the wireless line control device side.

[Means for Solving Problems] According to the present invention, a plurality of wireless connection devices are connected to each other,
That is, they are connected to a common bus line or sequentially connected in a ring shape, and are connected to each other. When the wireless connection device in the call processing acceptance state shifts to the call state, the wireless connection device sends to the other predetermined wireless connection device an instruction to shift to the call processing acceptance state and receives the instruction. If the wireless connection device is not in the call state, it shifts to a call processing acceptance state, and if the wireless connection device that received the instruction is in the call state, another wireless connection that is predetermined by the wireless connection device that received the instruction An instruction to shift to the call processing acceptance state is sent to the device. After that, the same process is performed so that one wireless connection device is always in the call process acceptance state.

As described above, according to the present invention, the control for shifting to the call processing acceptance state is not performed by the wireless line control device but is directly performed by the wireless connection device, so that the wireless line control device does not need to manage the state of the wireless connection device. Even when the wireless connection device is added, it is not necessary to change the state management table of the wireless connection device of the wireless line control device.

[Embodiment] FIG. 1 shows a system configuration in an embodiment of the present invention. The fixed line network 11 is connected to a switching device 13 via a plurality of office lines 12. The switching device 13 is connected to a plurality of wireless connection devices 1 ₁ to 1 _n via respective separate lines 14. Each wireless connection device 1 ₁ to 1 _n and the mobile radio device (not shown) radio channel composed of at least one control channel and a plurality of call channels is provided between a wireless connection device 1 ₁ - 1 _n is equipped with a radio having a multi-channel access function. In other words, a multi-channel access method is used in which a communication channel is established by using a control channel. There is a one-to-one correspondence between the station line 12 and each mobile wireless device, and the switching device 13 can identify which mobile wireless device is the incoming call by identifying the station line 12 that received the call.

In the present invention, the wireless connection devices 1 ₁ to 1 _n are connected to each other. Therefore, in this example, the wireless connection devices 1 ₁ to 1 _n are connected to the bus line 15.

FIG. 2 shows a configuration example of the exchange device 13 in FIG. The matrix switch 21 includes the station line 12 and the wireless connection devices 1 ₁ to.
The circuit is exchanged with 1 _n . Matrix switch 2
A wireless connection device interface unit 22 for transmitting and receiving control signals to and from the wireless connection devices 1 ₁ to 1 _n is inserted into one side of each of the wireless communication devices 1 ₁ to 1 _n, and an interface with the station line 12 is connected to the other side. The control section 24 controls the entire operation in which the station line interface section 23 is inserted.

FIG. 3 shows one configuration example of the wireless connection devices 1 ₁ to 1 _n . The transmitting / receiving antenna 31 is connected to a wireless transmitter / receiver 32 having a multi-channel access function, and the wireless transmitter / receiver 32 is connected to a 2-wire / 4-wire converting circuit for audio signals.
The two-wire side of the conversion circuit 33 is connected to the line 14 connected to the switching device 13 via the line relay 34. A control signal transmitter / receiver 35 for exchanging control signals with the exchange 13 is connected to the line 14. The control unit 36 performs control necessary for connection control. The storage memory 37 stores the ID (identification code) of its own wireless connection device and the ID of the adjacent wireless connection device in this example. It is connected to the bus line 15 by the connector 38.

In the above configuration, for example, the wireless connection device 1
_{When 2} is in the call processing accepting state, performs the call processing control to the call request from the wireless connection device 1 ₂ incoming request or the mobile radio from the central office line 12, shifts to a call state,
Read the ID of the wireless connection device 1 ₃ adjacent from the memory 37, to the wireless connection device 1 _3, sends an instruction to migrate through the bus line 15 to the call processing accepting state. Notifying that the radio connection device 1 ₃ which has received this instruction is shifted to the call processing accepting state to the switching device 13 as well as shifts in the call processing accepting state if not call state. Wireless connection device _{1 3}
There If call state, the wireless connection device 1 ₃ terminates its own process instructs via the bus line 4 to shift to the call process receiving state to the wireless connection device 1 ₄ adjacent. Wireless connection device 1 ₄ which has received this instruction performs the same processing as the wireless connection device 1 _3.

Upon receiving the notification from the wireless connection device that the call processing acceptance state has been entered, the switching device 13 connects the station line 12 to the connection device in the call processing acceptance state when an incoming call request is made from the station line 12. When there is a call request from the mobile wireless device and a call request from the wireless connection device in the call processing acceptance state, the switching device 13 connects the call request to the station line corresponding to the mobile wireless device.

By performing such a control operation, an instruction to shift to the direct call processing acceptance state is sent between the wireless connection devices without interposing the wireless line control device, and within the group composed of a plurality of wireless connection devices. Only one wireless connection device is always in the call process acceptance state, and this wireless connection device in the call process acceptance state is registered in the exchange device 13.

FIG. 4 shows another example of the configuration of the wireless connection device, and the portions corresponding to those in FIG. 3 are designated by the same reference numerals. In this wireless connection device, only the ID of its own wireless connection device is stored in the memory 37. Further, a transmission connector 41 for sending an instruction to the adjacent wireless connection device and a reception connector 42 for receiving an instruction from the other adjacent wireless connection device are provided. With such a structure, all the wireless connection devices forming the group are connected to the transmission connector 4
1. The receiving connector 42 sequentially connects in a ring shape. Therefore, in this case, an instruction to shift to the call processing acceptance state is always sent to the adjacent wireless connection device. In this case, unlike the bus line connection, the ID of the wireless connection device need not be added to the transmission / reception of the instruction, so that the transmission / reception control is simplified. In the case of bus line connection, it is not necessary to send the command to the adjacent wireless connection device.

[Advantages of the Invention] As described above, according to the present invention, the wireless line control device is not necessary because the wireless connection control devices directly instruct the transition to the call processing acceptance state without interposing the wireless line control device. become.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system according to an embodiment of the present invention, FIG. 2 is a block diagram showing an example of the exchange device 13 in FIG. 1, and FIG. 3 is an example of a wireless connection device in FIG. The block diagram shown in FIG. 4 is a block diagram showing another example.

Claims (1)

[Claims] 1. A wireless channel is composed of at least one control channel and a plurality of communication channels, and a circuit is exchanged between a plurality of wireless connection devices having a wireless device having a multi-channel access function and a fixed line network. When the switching device is inserted, the above-mentioned plurality of wireless connection devices are connected to each other, and when the wireless connection device in the call processing accepting state shifts to the call state, another wireless connection device predetermined for that wireless connection device To the call processing acceptance state, and if the wireless connection device that received the instruction is not in the call state, it shifts to the call processing acceptance state, and if the wireless connection device that received the instruction is in the call state , The wireless connection device sends an instruction to enter a call processing acceptance state to a predetermined wireless connection device, and one wireless connection device is always in the call processing acceptance state. Radio channel control method for a radio.