JPS5936441A - State display system of radio device - Google Patents

Abstract

PURPOSE:To prevent useless calling, by inserting information relating to the propriety of a call in a signal of a control channel, collating the information with a call number of own station stored in advance at a terminal station side receiving the information and displaying negative information among sets of propriety information. CONSTITUTION:A terminal station waiting for a signal on its control channel receives an outgoing control signal at a receiver (not shown in figure), then the bit synchronism and the frame synchronism of the outgoing control signal are taken at a synchronism detecting circuit 2 via a data input terminal 1, in a state display system of a radio device of a multi-channel access system of a two-frequency semi-duplex system, a control signal comparison circuit 3 compares the signal with a command or the like of the own station stored in advance in a storage circuit 4 of the terminal station bit by bit and a discrimination circuit 5 discriminates the result of comparison. Further, when the received control signal corresponds to the own station, a display signal generating circuit 6 is operated according to the system or the kind of command information with possibility of reserved reception, reserved notice and congestion or the like, for example, and displayed on a display device 7.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a status display method for a wireless device using a two-frequency half-duplex multichannel access system (MO system).

Conventional configuration and its problems In the conventional MO system, when a connection request cannot be responded to due to, for example, a communication channel being full, a notification is sent using system information and command information in the lower control signal. However, there was a problem in that callers who did not know that they were waiting for a reservation would repeatedly make useless calls even though they were not connected to the communication channel.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned conventional drawbacks and to provide a status display method for a wireless device that displays the status on the display when a call cannot be made.

Structure of the Invention The present invention inserts information regarding whether or not a call is possible into a control channel signal, and the terminal station that receives this information,
This function verifies the call number of the own station stored in advance, and also displays information regarding the failure of the above-mentioned information to prevent unnecessary calls.

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 i2 process data D. The first block data C includes a system code to which the base station system belongs, a system information b that informs the status of the base station system, a teno command C1 command information d1 as an instruction from the base station to the terminal station, and a preliminary code θ for the command. In the 7-stem information f, there is information on whether or not reservation acceptance and wide-area reception are possible. Types of command information C include channel designation, -simultaneous command, reservation notification, congestion, etc.

The second blockator D is composed of the system code a, a group code f consisting of the user code, and a channel number q of the communication channel designated by the base station.

Next, the operation will be explained.

In the MCA system, the base station broadcasts the system information on the control channel, and the terminal station verifies the system information of its own station and only when it is ready to accept reservations can it send out a connection request signal. . 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 the channel number q. If there is no free call channel and there is space in the reservation queue, a "reservation notification" is sent using the command information C to notify that it has been registered in the reservation queue. After that, when the communication channel becomes vacant, the operation is the same as that of the empty communication channel. If the connection request cannot be processed due to reasons such as there being no space in the queue, a "congestion" message is sent using command information C to notify that the connection request has not been accepted.

When the terminal station belonging to the party that made the connection request detects "channel designation" in the command information C for its own group, it switches to the communication channel specified by the channel number q that is sent out continuously, becomes able to talk, and is connected to the communication channel. Displays a message indicating that the device is in a call state.

Figure 2 shows the configuration of a device to which the status display method is applied, where 1 is a data input terminal from a receiver, 2 is a synchronization detection circuit, 3 is a control signal comparison circuit, 4 is a storage circuit, and 5 is a judgment circuit. , 6 is a display signal generation circuit, and 7 is an optical (LED etc.) or acoustic (speaker etc.) indicator.

Next, the operation will be explained. When a terminal station waiting on a control channel receives a downlink control signal with a receiver (not shown), it performs bit synchronization and frame synchronization of the downlink control signal with a synchronization detection circuit 2 via a data input terminal 1. 9. The control signal comparison circuit 3 compares the terminal station's a) system code b) command, etc. stored in advance in the storage circuit 4 of the terminal station, bit by bit, and the determination circuit 5 determines the result and determines whether it is received. If the intercepted control signal is for the own station, depending on the type of system information or command information, the display signal may be displayed as, for example, ``possible'' or ``unavailable'' for reservation reception, ``reservation notification,'' 1-width ring, etc. The generation circuit 6 is activated and the display 7 displays the information. This display may be stopped after a predetermined period of time, or may be stopped when the user connects to a communication channel.

Next, an embodiment in the case of simultaneous paging will be described. In this case, as shown in FIG. 3, when the terminal station in the standby state receives the "-simultaneous command" with the command C on the lower control channel, the terminal station restricts calling and also uses the specified fl - The communication channel changes to channel number q and receives the -simultaneous command broadcast.

At this point, the terminal station that receives the "1-simultaneous command" makes an all-optical or acoustic display indicating that the -simultaneous command is in progress, to alert the operator. This display may be displayed for a predetermined period of time, or may be displayed continuously during the entire command.

FIG. 3 shows a configuration for displaying the above-mentioned simultaneous call, in which 9 is a flip-flop, and the same reference numerals as in FIG. 2 represent the same names. With the above configuration, when a simultaneous command is received with command C, the channel number q switches to the specified communication channel, receives the simultaneous command broadcast, and sets flip-flop 6 to give an instruction to the drive circuit. Then, the display unit 7 displays a message indicating that the command is a simultaneous command.

In this example, while in the call channel,
The 0 knob 4 is set to ζn, which is set when the 0 command is completed and the control is also taken to the 1 channel.

Fig. 4 shows another implementation 1 in which "channel designation" is detected, 10 is a channel number verification section, and the same reference numerals as in Fig. 2 have the same names. represents. In the above configuration, after "channel designation" is detected by command C, the received channel number q is compared with the channel number stored in advance in the storage circuit 4 in the total channel number verification section 10, and the result is determined. When the circuit 6 determines that the channel number matching the channel number q is not found in memory, an instruction is given to the drive circuit 6, and the display section 7 displays that the communication channel test has been failed.

As described in detail, according to the present invention, if a terminal station cannot use the communication channel specified by the base station, it can notify the operator of this fact, thereby reducing waste on the part of the operator. It has great practical value, such as eliminating the need to make calls.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a signal configuration of a state storage method of a wireless device according to an embodiment of the present invention, FIG. 2 is a block diagram of a device to which the method is applied, and FIG. Block Diagram Showing the Configuration FIG. 4 is a block diagram roughly showing the configuration of another embodiment. 1... Input terminal, 2... Synchronization detection circuit, 3... Control signal comparison circuit, 4... Memory circuit, 5... Judgment Circuit, 6...Drive circuit, 7...Display section, 10...Channel number verification section.

Claims (1)

[Claims] A system consisting of a plurality of base stations and a plurality of terminal stations classified into groups.
, a wireless channel connecting the base station and the terminal station includes at least one control channel and a plurality of communication channels, the base station broadcasts various control signals on the control channel, and the terminal station broadcasts various control signals from the base station. A communication channel is assigned to each group to which the terminal station belongs by accessing the control channel of the terminal station, and each terminal station in the group communicates with terminal stations in the same group by relaying the base station using the assigned communication channel. The base station that receives the connection request from the terminal station can accept reservations on the control channel depending on the type of request and usage status of the communication channel. The terminal station transmits at least one of the following: "No, Channel Designation, Reservation Notification, Congestion Reduction, and Simultaneous Command" and receives the control channel. s(!: In addition to checking, if the call is not possible, display a message to that effect; if the channel is specified, if there is a mismatch after checking with the specified call channel stored in the storage element, a message to that effect is displayed. A wireless device status display method that displays.