JPS6359619B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a status display method for a wireless device that displays the call status in a mobile radio multi-channel access (hereinafter abbreviated as MCA) system.

Conventional configuration and its problems In the method of allocating an empty call channel to a group that has received a connection request, and if there is no free channel, it is put on standby, and connections are made sequentially as soon as a call channel becomes available, the group is The terminal station operator had the disadvantage that he could not tell whether his station was currently in a callable state (connected to a call channel) until he made a call.

OBJECT OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks, and it is an object of the present invention to display an indication that all terminal stations belonging to a group connected to a communication channel are in a communication state, thereby improving the efficiency of the communication channel. The aim is to make it operationally possible.

Structure of the Invention When a control channel signal is received by the receiver of a terminal station in the MCA method of the two-frequency half-duplex method, the downlink control channel signal is temporarily stored, and at the same time, the control signal detection unit stores the control channel signal in another storage circuit. It is compared with the stored identification information of its own group, and when the two match and the command information is "channel designation", a channel designation signal corresponding to the temporarily stored channel number is sent to the channel frequency oscillator, and the Detecting that the frequency of the channel frequency oscillator has been switched to a specified channel, and when both the detection result and the command information being "channel specified" are satisfied, the display unit displays that the communication channel is connected. It is composed of

DESCRIPTION OF THE EMBODIMENTS FIG. 1 shows the frame structure of a downlink control signal in the MCA system, which consists of bit synchronization A, frame synchronization B, first block data C, and second block data D. The first block data C includes a system code a to which the base station system belongs, system information b that reports the status of the base station system, a command c as an instruction from the base station to the terminal station, command information d, a preliminary code of the command e, In system information b, information on whether or not reservation reception and wide area reception can be accepted is in command information c.
Types include channel instruction, reservation notification, congestion, etc.

The second block data D is the system code a.
and a group code f consisting of a user code, and a channel Nog of a communication channel designated by the base station.

Next, the operation will be explained.

In the MCA system, the base station broadcasts the system information b on the control channel, and the terminal station verifies its own system information b and can send a connection request signal only when it is in a state where reservations can be accepted. Become. The terminal station sends a connection request signal after confirming that the base station of its own system is in a state where reservations can be accepted.

When the base station receives the connection request signal, if there is an empty communication channel, it sends "channel designation" using the command information c, and subsequently specifies the communication channel using channel Nog. There are no empty channels,
If there is space in the reservation queue, a "reservation notification" is sent using the command information c to notify that the reservation queue has been registered. After that, when a free call channel becomes available, the operation is the same as that of the free call channel. If a connection request cannot be processed due to reasons such as there being no space in the queue, "congestion" is sent as command information c to notify that the connection request has not been accepted.

When the terminal station belonging to the group that requested connection detects "channel designation" in the command information c for its own group, it can switch to the communication channel specified by the channel Nog that is subsequently sent and make a call,
Displays an indication that the device is in a call state while connected to a call channel.

FIG. 2 shows the configuration of a device that implements the display method. In the figure, 1 is an antenna terminal, 2 is a receiver, 3 is a temporary storage and control circuit, and 4 is a receiver.
5 is a control signal detection section, 5 is a memory circuit, 6 is a channel frequency oscillator, 7 is a gate circuit including an AND circuit, etc., and 8 is a display section.

In the above configuration, when the terminal station that made the connection request and other terminal stations in the standby state receive the control channel signal at the receiver 2 via the antenna 1, they temporarily store the downlink control signal in the temporary storage circuit 3, and , the control signal detection unit 4 compares and verifies the system code a, command information d, etc. of the own group stored in the storage circuit 5 of the terminal station, and verifies that the received control signal is for the own group and the command When the information d is "channel specification" and the channel Nog matches the channel registered in the local station, the stored channel Nog is sent to the temporary storage and control circuit 3.
It instructs the channel frequency oscillator 6 to send out a channel designation signal corresponding to the call channel, and also sends a signal to the gate circuit 7 indicating that the communication channel is designated.

On the other hand, the channel frequency oscillator 6
When the channel switching to Nog is completed, a signal to that effect is sent to the gate circuit 7. The gate circuit 7 determines that the communication channel is assigned to the group to which the local station belongs and that the local station has completed switching to the corresponding communication channel based on the input of both signals from the control signal detection unit 4 and the channel frequency oscillator 6. Then, the output of the gate circuit 7 instructs the display unit 8 to display a message indicating that the communication channel is connected.

Effects of the Invention As explained above, according to the present invention, for the calling station, after the call is made, the switching to the communication channel is completed,
It can notify you that you are now on the phone.
Furthermore, terminal stations in the same group can know that their own group is in a call state, and this has great practical value, such as being able to efficiently operate the call channel.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of a control signal of a status display method of a wireless device according to an embodiment of the present invention, and FIG.
The figure is a block diagram of a device to which this method is applied. 2... Receiver, 3... Temporary storage and control circuit,
4... Control signal detection section, 5... Memory circuit, 6...
Channel frequency oscillator, 7...gate circuit, 8
...Display section.

Claims (1)

[Claims] 1 Consisting of a plurality of base stations and a plurality of terminal stations classified into groups, a wireless channel between the base station and the terminal station consists of at least one control channel and a plurality of communication channels, and the base station has a control channel. The terminal station accesses the control channel of the base station and is assigned a communication channel according to the group to which the terminal station belongs, and each terminal station in the group uses the assigned communication channel to communicate with the base station. If the terminal station makes a connection request to the base station and there is an empty communication channel, the base station transmits control to the entire group to which the terminal station belongs. A communication channel is specified using a channel, and the terminal stations of the group switch from the control channel to the specified communication channel, make a call, and when the receiver receives a control channel signal, the terminal station of the group switches to the specified communication channel. While the signal is temporarily stored, the control signal detection section compares it with the identification information of its own group stored in other storage circuits, and when the two match and the command information is channel specification, the signal is temporarily stored. Sending a channel designation signal corresponding to a channel number to a channel frequency oscillator, detecting that the frequency of the channel frequency oscillator has switched to the designated channel, and confirming that both the detection result and the command information are "channel designation". A method of displaying the status of a wireless device by displaying on the display unit that it is connected to a communication channel when the communication channel is established.