JPH033438A - Radio communication equipment - Google Patents

Abstract

PURPOSE:To prevent erroneous recognition and to prevent line disconnection by detecting the information of the interruption of signal input in a transmission system by a reception system to switch lines. CONSTITUTION:A circuit is so constituted that the information of the interruption of signal input is detected by a reception system 11 and inputted to a switching control part 3 to control the line switching. That is, the specific pattern detecting part 20 of a transmission system 10 is provided with an input interruption detecting part and a specific pattern detecting part, and respective outputs are transmitted to the reception system 11. A pulse interruption detecting part and a specific pattern detecting part are incorporated in the reception DPU part 18 of the reception system 11, and respective output signals are given to an alarm control part 21 and a switching control part 3. Line switching is not performed at the time of detecting a specific pattern and performed only at the time of detecting a signal interruption. Thus, the signal interruption is not erroneously recognized as the specific pattern to prevent line interruption.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a wireless communication device, and in particular, the present invention relates to a wireless communication device, in which a wireless system consisting of a transmitting system and a receiving system is composed of two routes, a working route and a backup route, and a specific pattern of communication equipment is provided. The present invention relates to a wireless communication device that can switch lines during data transmission.

[Conventional technology]

Conventionally, this type of wireless communication device processes data signals in a wireless transmission section using an NRZ waveform, so all input data signals are "1" (hereinafter referred to as "1111").
, or if they are all "0" (hereinafter referred to as rooooJ), a pulse break alarm will occur and signal transmission will become impossible.

FIG. 5 is a block diagram showing a wireless communication device capable of transmitting signals even if a pulse break alarm occurs.

The wireless communication device shown in FIG.
, a switching control section 3, and an output signal S.

It is composed of a switching section 4 that outputs.

The working radio system IA consists of a transmitting system 10 and a receiving system 11, and the backup radio system IB also has the same configuration as the working radio system IA. The radio system is composed of two paths, a working radio system IA and a backup radio system IB, and signals branched at the branching section 2 are supplied to the working radio system IA and the backup radio system IB, respectively. Further, the switching unit 4 selects and outputs either the output of the working radio system IA or the output of the backup radio system IB. Switching control unit 3 is capable of taking in an alarm ALM from the receiving system 11 of the active radio system IA and backup radio system IB, and switching control of the switching unit 4 based on the alarm LM. Transmission system 1
0, a specific pattern detection unit 20 is provided in the transmitting system 10 to suppress unnecessary alarms occurring in the receiving system 11 during data transmission in a specific turn, and when a specific pattern is input, the information is transmitted from the transmitting system 10 to the receiving system 11. ° to prevent alarm occurrence.

The transmission system 10 includes a transmission interface 12 and a transmission DP.
It is composed of a U section 13, a modulating section 14, a transmitting radio section 15, and a specific pattern detecting section 20. The reception system 11 includes a reception radio section 16, a demodulation section 17, and a reception DPU section 18.
, a reception interface section 19, and an alarm control section 2
It is composed of 1.

According to such a wireless communication device, the specific pattern detection section 20 is installed at the input section of the transmission system 10 to prevent signal transmission from becoming impossible. That is, rllllJ, r
oooo'' input signal, the information on the specific pattern input detected by the specific pattern detection section 20 is input to the transmission DPU section 13 and transmitted to the reception system 11 using additional bits for radio section control, and then Pulse interruption alarm A in system 11
Suppresses LH generation.

〔Problems to be solved〕

The conventional wireless communication device described above uses r as a specific pattern.
The alarm ALM is prevented from occurring in the receiving system 11 in each case of "llll", "roooo", and pseudo-roooo due to input signal disconnection. For this purpose, a specific pattern detection section 20 is provided. However, the specific pattern detection unit 20
Since the pseudo roo is connected after the bipolar/unipolar conversion section in the input section 2, it is output when the input to the branch section 2 is disconnected.

O'', pseudo roooo and + due to a failure of the bipolar/unipolar converter will operate in the same way. Therefore, in the receiving system 11, the pulse break alarm LM will not occur in any of the above failures. This means that even if the bipolar/unipolar converter of the working radio system IA fails, the alarm ^LM will not occur in the receiving system 11, so switching from the working radio system IA to the standby radio system IB will not be performed. means. therefore,
This wireless communication device has a problem in that line disconnections occur.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a wireless communication device that is capable of detecting, in a receiving system, information on signal input interruption in the transmitting system and performing line switching.

[Means for solving problems]

In order to achieve the above object, the wireless communication device of the present invention has a wireless system consisting of a transmitting system and a receiving system configured with two paths, a working route and a standby route, and selecting between the working output and the standby output. It has a switching section that outputs an output, and a switching control section that takes in an alarm from the receiving system and switches and controls the switching section based on the alarm, and suppresses unnecessary alarms that occur in the receiving system when transmitting a specific pattern of data. In a wireless communication device that includes a specific pattern detection unit in the transmitting system to suppress the generation of an alarm by transmitting the information from the transmitting system to the receiving system when a specific pattern is input, the receiving system detects information on signal input interruption. The present invention is characterized by having a circuit configuration that can perform line switching control by detecting the information and inputting the information to the switching control section.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIGS. 1-4 are for detailed explanation of the present invention. Here, FIG. 1 is a block diagram showing an embodiment of the wireless communication device of the present invention, FIG. 2 is a block diagram showing a transmission interface and a specific pattern detection section, and FIG. 3 is a block diagram showing a reception DPL 1 section and an alarm control section. The block diagram shown in FIG. 4 is an explanatory diagram showing the states of various control signals with respect to various input signals.

The wireless communication device shown in FIG. 1 includes a working wireless system IA, a standby wireless system IB, a branching section 2 that branches an input signal Si, a switching control section 3, and an output signal S.

and a switching section 4 that outputs.

The working radio system IA consists of a transmitting system 10 and a receiving system 11. Further, the backup radio system IB also has the same configuration as the working radio system IA. The radio system is composed of two paths, a working radio system IA and a backup radio system IB, and signals branched at the branching section 2 are supplied to the working radio system IA and the backup radio system IB, respectively. Further, the switching unit 4 is configured to select and output either the output of the working radio system IA or the output of the backup radio system/system IB. Switching control unit No. 3 is capable of taking in an alarm LM from the receiving system 11 of the working radio system IA and the standby radio system IB and controlling the switching unit 4 based on the LM. The transmission system 10 is provided with a specific pattern detection unit 20 in order to suppress unnecessary alarms occurring in the reception system 11 during data transmission in a specific turn, and receives the information from the transmission system 10 when a specific pattern is input. The alarm is transmitted to system 11 to suppress the occurrence of an alarm.

The transmission system IO includes a transmission interface 12 and a transmission DP.
It is composed of a U section 13, a modulating section 14, a transmitting radio section 15, and a specific pattern detecting section 20. The reception system 11 includes a reception radio section 16, a demodulation section 17, and a reception DPU 11B.
, a reception interface section 19, and an alarm control section 2
It is composed of 1. Further, in the reception system 11, the alarm control section 21 detects information on signal input interruption, and inputs the information to the switching control section 3 so that line switching control can be performed.

The transmission interface 12 includes a bipolar/unipolar converter 121 and a decoder 122. The specific pattern detection unit 2o includes an input disconnection detection unit 201 that takes in the output signal of the bipolar/unipolar conversion unit 121.
and rllll which takes in the output signal from the decoder 122.
lJ, ro.

00'' detection section 202, and an OR circuit 203 that takes in the signals of the input disconnection detection section 201 and the detection section 202 and forms an alarm control signal.

Further, the reception DPU section 1B includes a DPU section 181, a pulse interruption detection section 182, and an "rlolo" detection section 183. The alarm control unit 21 is a DPU@181
A gate 211 that forms a pulse break alarm signal from the signal from the pulse break detector 182 and the signal from the pulse break detector 182;
From the signal from the section 181 and the signal from the rlo10J detection section 183, r 1111 J! ll1f faith! (A
1111 control section 212.

The operation of the embodiment configured in this way will be explained below.

In FIG. 4, α indicates a signal of the transmitting system IO, β indicates an output signal of the receiving DPUs 18, and γ indicates an output signal from the alarm control unit 21, respectively. In FIG. 4, the signals of each part are shown for the pattern of the transmission system input signal.

The input signal St is sent to the working radio system I at the branching unit 2.
Bipolar/unipolar conversion unit 121 at the transmission interface 12
After bipolar/unipolar conversion is performed in the decoder 12
2 in 1 (DBallA, DP sent as NRZ signal)
It is sent to the U section 13. At this time, as shown in Figure 2,
The signal is branched during each process, and the specific pattern detection unit 2o
is input. Here, the control signal output for the input signal is as shown in FIG. 4, and is input to the transmission DPU unit 13. Of these control signals, is the alarm control signal based on the radio section system? It is transmitted to the receiving system 11 using the additional bit for i, and the input disconnection signal is sent to the transmitting DPU section 13 as
Used to forcefully send out the 0J pattern signal.

This is a measure to avoid generating a pulse break alarm in the receiving system 11. The output of the transmitting DPU section 13 is transmitted to the modulating section 1.
After being modulated by the transmitting radio section 15 and subjected to waste wave number conversion by the transmitting radio section 15, the signal is output to the receiving system 11.

In the receiving system 11, the signal is frequency-converted in the receiving radio section 16 and demodulated in the demodulating section 17, and then the additional pits are removed in the receiving DPU section 18, and the data is converted into the original data string and given to the receiving interface section 19. The reception interface section 19 performs unipole/biball conversion and then outputs the signal through the switching section 4 as an output signal So.

Here, as shown in FIG. 3, the reception DPU unit 18 has
Pulse break detection unit 182 and “1010” detection unit 183
is built in, and provides the alarm control section 21 with the output signal of each detection section and the alarm control signal transmitted from the transmission system 10 using the additional bits. Receiving DPU section 1
The output signal of No. 8 and the operation of the alarm control section 21 are as follows.
It is as shown in the figure. The output signal of the alarm control unit 21 is "1111 J" which is used for A■S transmission.
There are an I'll signal and a pulse disconnection alarm signal for equipment failure detection, of which the rllll'' control signal is related only to input disconnection of the receiving system 11, and is therefore used for line switching. This makes it possible to perform line switching even if only one line is cut off due to a failure of the bipolar/unipolar converter 121 in the transmission interface 12. Therefore, the alarm control section 2
The rl 111J control signal of 1 is input to the reception interface unit 19 for AIS transmission, and is also input to the switching control unit 3 that controls switching of the switching unit 4. This allows switching.

〔Effect of the invention〕

As described above, the present invention has the effect of enabling line switching and preventing line disconnection in the event of a failure of the bipolar/unipolar converter or disconnection of input to the transmission interface.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the wireless communication device of the present invention, FIG. 2 is a block diagram showing a transmission interface and a specific pattern detection section, and FIG. 3 is a block diagram showing a reception DPU section and an alarm control section. 1. FIG. 4 is an explanatory diagram showing the states of various control signals with respect to various input signals, and FIG. 5 is a block diagram showing a conventional device. LA...Working radio system, IB...Backup radio system, 2
... Branching section, 3... Switching system iTJ section, 4... Switching section, 10... Transmission system, 11... Receiving system, 12...
Transmission interface, 20...Specific pattern detection section, 21...Alarm control section. Figure 4

Claims (1)

[Claims] The wireless system consisting of a transmitting system and a receiving system is composed of two paths, a working and a standby route, and has a switching section that selects and outputs either the working output or the standby output, and the alarm from the receiving system is The transmission system includes a switching control unit that switches and controls the switching unit based on the alarm that is taken in, and a specific pattern detection unit is provided in the transmission system to suppress unnecessary alarms that occur in the reception system when transmitting data of a specific pattern. In a wireless communication device that suppresses alarm generation by transmitting information from a transmitting system to a receiving system when inputting a pattern, the receiving system detects information of a signal input interruption, and inputs the information to the switching control section. A wireless communication device characterized by having a circuit configuration that can perform line switching control.