JP2017192081A - Communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily detect where an abnormality has occurred in an apparatus. Each of a plurality of signal processing units 111 processes the data signal in order along a processing path of the data signal, and each of the plurality of selectors 112 is associated with each of the plurality of signal processing units 111. One selector 112-1 included in the plurality of selectors 112 is provided, and one signal processing unit 111-1 associated with the one selector 112-1 in response to an instruction from the control unit 113. The data signal output from is input to one signal processing unit 111-1, and the control unit 113 instructs the selector 112 to output from one signal processing unit 111 in order from the upstream of the processing path. Is folded back to detect whether or not an abnormality occurs. [Selection diagram] Fig. 1

Description

  The present invention relates to a communication device, and more particularly to a communication device that analyzes the cause of an abnormality that has occurred in the device itself.

  A transmission system using an optical transmission / reception device as a communication device has a transmission capacity per device of 40 Gbps and 100 Gbps from the conventional 1 Gbps and 10 Gbps as the communication data increases in capacity and speed. Progressing. With regard to the transmission capacity, there is an increasing demand for further increase in capacity.

When the transmission capacity per device increases, when a transmission line abnormality or a device abnormality occurs, the influence becomes very large. For this reason, high reliability and quick cause analysis when an abnormality occurs are required.
As a conventional technique, for example, there is a failure detection method described in Patent Document 1. In this failure detection method, when a specific abnormality such as an input interruption or loss of synchronization occurs, each of the conversion devices connected to the line multiplexes the input signal so that an error occurs in its own device. It is possible to detect whether or not there is an abnormality in another transmission path.

JP-A-1-264326

  In the conventional technology, when a specific error occurs, it can be determined whether the error is in the transmission path or the device, but if an error occurs in the device, where the error is in each signal processing unit It is not possible to isolate what has occurred. For this reason, in order to specify the cause, it is manually separated, and it takes time to specify the cause.

  Further, in the conventional technique, even after an abnormality has occurred once, it may be recovered due to the passage of time or the like, and when it cannot be identified before the abnormality is recovered, there is a problem that the cause identification becomes more difficult.

  In view of the above, an object of the present invention is to make it possible to easily detect where an abnormality occurs in the apparatus.

  A communication apparatus according to an aspect of the present invention is a communication apparatus including a plurality of signal processing units, a plurality of selectors, and a control unit, and each of the plurality of signal processing units is provided in a data signal processing path. Each of the plurality of selectors is provided in association with each of the plurality of signal processing units, and one selector included in the plurality of selectors is configured to control the data signal. In response to an instruction from the unit, the data signal output from the one signal processing unit associated with the one selector is input to the one signal processing unit, and the control unit is connected upstream of the processing path. In order, the selected signal is selected by selecting one signal processing unit included in the plurality of signal processing units and instructing one selector associated with the selected signal processing unit. Output from the processing unit A data signal by the input to the signal processing section said selected, and performs an analysis process that abnormality in the selected signal processing unit detects whether occurring.

  According to one aspect of the present invention, it is possible to easily detect where an abnormality has occurred in an apparatus by detecting whether or not an abnormality has occurred in order from the upstream of the processing path.

1 is a block diagram schematically showing an example of an optical transmission system. (A) And (B) is the schematic which shows the example of the hardware constitutions of a control part. It is a flowchart which shows the analysis process at the time of abnormality occurrence. 6 is a block diagram schematically showing an example of an optical transmission system according to Embodiment 2. FIG. 10 is a block diagram schematically showing an example of an optical transmission system according to Embodiment 3. FIG.

Embodiment 1 FIG.
The optical transmission system according to Embodiment 1 will be described with reference to the drawings. The optical transmission system is configured by connecting a plurality of optical transmission / reception devices in multiple stages.

FIG. 1 is a block diagram schematically illustrating an example of an optical transmission system.
The optical transmission system 100 includes, for example, a first optical transmission / reception device 110A that functions as a first communication device, and a second optical transmission / reception device 110B that functions as a second communication device. The first optical transmission / reception device 110A and the second optical transmission / reception device 110B are configured in the same manner, and are hereinafter referred to as the optical transmission / reception device 110 unless it is particularly necessary to distinguish between them. Note that the number of the optical transmission / reception devices 110 constituting the optical transmission system 100 is not limited to two.

  The optical transceiver 110 includes a first signal processing unit 111-1, a second signal processing unit 111-2,..., An Nth signal processing unit 111-N (N is an integer greater than or equal to 2), 1 selector 112-1, second selector 112-2,..., Nth selector 112-N, control unit 113, memory unit 117, input unit 118, and output unit 119. Each of the first signal processing unit 111-1, the second signal processing unit 111-2,..., And the Nth signal processing unit 111-N is configured in the same manner. When it is not necessary to distinguish, it is referred to as a signal processing unit 111. In addition, since each of the first selector 112-1, the second selector 112-2,..., And the Nth selector 112-N is configured in the same manner, there is no need to distinguish between them in the following. Is referred to as selector 112. The first selector 112-1 is provided in association with the first signal processing unit 111-1, and the second selector 112-2 is provided in correspondence with the second signal processing unit 111-2. The Nth selector 112-N is provided in association with the Nth signal processing unit 111-N.

The plurality of signal processing units 111 are arranged so as to sequentially process the data signals along the data signal processing path.
Each signal processing unit 111 performs a predetermined process on the data signal input from the upstream side of the data signal processing path, and outputs the processed data signal to the downstream side. When the signal processing unit 111 detects an abnormality in the data signal processing, the signal processing unit 111 notifies the control unit 113 of an abnormality alarm. The alarm here indicates the occurrence of an abnormality.

  The selector 112 selects a data signal to be input to the associated signal processing unit 111 in accordance with an instruction from the control unit 113. Normally, the selector 112 inputs a data signal input from the upstream side of the data signal processing path to the associated signal processing unit 111. However, the selector 112 inputs the data signal output from the associated signal processing unit 111 to the signal processing unit 111 according to an instruction from the selector control unit 114. For example, the first selector 112-1 normally inputs the data signal input from the second signal processing unit 111-2 to the first signal processing unit 111-1, but the instruction from the selector control unit 114 Thus, the data signal output from the first signal processing unit 111-1 is folded back to the first signal processing unit 111-1.

The control unit 113 controls processing in the optical transmission / reception device 110. For example, the control unit 113 selects one signal processing unit 111 included in the plurality of signal processing units 111 in order from the upstream of the data signal processing path, and is associated with the selected signal processing unit 111. By instructing one of the selectors 112, the data signal output from the selected signal processing unit 111 is input to the selected signal processing unit 111, and an abnormality occurs in the selected signal processing unit 111. Analysis processing for sequentially detecting whether or not is detected. When the occurrence of an abnormality is detected in the analysis processing, the control unit 113 determines that the signal processing unit 111 selected when the occurrence of the abnormality is detected has a cause of the abnormality.
The control unit 113 includes a selector control unit 114, an alarm detection unit 115, and an analysis control unit 116.

  The selector control unit 114 instructs the selector 112 in accordance with the control from the analysis control unit 116, thereby causing the signal processing unit 111 to output the data signal output from the signal processing unit 111 associated with the selector 112. As shown in FIG.

The alarm detection unit 115 detects an alarm based on the alarm notification from the signal processing unit 111.
Further, the alarm detection unit 115 notifies the external device of the detected alarm and information indicating the result of the analysis processing in the analysis control unit 116. For example, the alarm detection unit 115 notifies the external device of the result of the analysis process via the output unit 119. The alarm detection unit 115 may display the result of the analysis process on the output unit 119. Here, in the analysis processing, when occurrence of abnormality is detected in any of the plurality of signal processing units 111, the result of the analysis processing indicates at least the signal processing unit 111 determined to be the cause of the abnormality. To do.

When the alarm detection unit 115 detects an alarm, the analysis control unit 116 controls the selector control unit 114 to analyze the location where the abnormality has occurred. Then, the analysis control unit 116 stores the result of the analysis processing of the abnormality occurrence location in the memory unit 117.
As a condition for the analysis control unit 116 to start analysis, at least one of an alarm type and a protection time can be set. For example, by setting an alarm type, it is possible to prevent analysis from being performed in a transitional situation such as when the apparatus is activated. In addition, by setting a specific time (for example, 10 seconds) as the protection time, it is possible to prevent the analysis from being performed when an instantaneous alarm is generated below the specific time.
In addition to the alarm detected by the reception-side factor as a condition for starting the analysis by the analysis control unit 116, a rear failure alarm detected when an abnormality occurs in the opposite device (signal transmission when an alarm is detected by the device) By including an abnormality occurrence notification alarm in the original device, the analysis processing is performed on both the own device and the opposite device, and it is possible to identify where the abnormality has occurred in the entire system.

  The memory unit 117 is a storage unit that stores information necessary for processing in the optical transceiver 110. For example, the memory unit 117 stores the result of the analysis process of the abnormality occurrence location analyzed by the analysis control unit 116.

  The input unit 118 receives an instruction input from the user or another optical transmission / reception device 110. For example, when the input unit 118 receives an input of an instruction from the user, the input unit 118 is realized by an input device including buttons and the like. When the input unit 118 receives an instruction input from another optical transmission / reception device 110, the input unit 118 is realized by a communication interface that communicates with a network.

  The output unit 119 outputs information to the user or another device. For example, when the output unit 119 outputs information to the user, the output unit 119 is realized by a display device that displays information. When the output unit 119 outputs information to another device, the output unit 119 is realized by a communication interface that communicates with a network.

  Part or all of the control unit 113 of the optical transmission / reception device 110 described above executes, for example, the memory 10 and a program stored in the memory 10 as illustrated in FIG. It can be configured by a processor 11 such as a CPU (Central Processing Unit). Such a program may be provided through a network, or may be provided by being recorded on a recording medium.

  In addition, for example, as illustrated in FIG. 2B, a part or all of the control unit 113 includes a single circuit, a decoding circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated). It can also be configured by a processing circuit 12 such as Circuits) or FPGA (Field Programmable Gate Array).

  The first optical transceiver 110A and the second optical transceiver 110B are connected by a transmission path 101. The data signals output from the first optical transceiver 110A to the second optical transceiver 110B are the first signal processor 111-1, the second signal processor 111-2 of the first optical transceiver 110A, .., And passes through the N-th signal processing unit 111 -N in order, and is output to the transmission line 101. Further, the data signal received by the first optical transceiver 110A from the second optical transceiver 110B is the Nth signal processor 111-N,..., The second signal processor 111-2, the first. Through the signal processing unit 111-1. Therefore, the optical transceiver 110 has two processing paths for processing data signals.

FIG. 3 is a flowchart showing an analysis process when an abnormality occurs.
The flowchart shown in FIG. 3 is started when the alarm detection unit 115 detects the occurrence of an alarm (occurrence of an abnormality) in any one of the signal processing units 111. In other words, it is started when the alarm detection unit 115 detects the occurrence of an alarm when the analysis process is not performed.

When the analysis is performed, the communication is temporarily interrupted because the main data signal is turned back. Therefore, the optical transmission / reception device 110 can set whether or not to perform the analysis.
When the alarm detection unit 115 detects a communication abnormality alarm or a device abnormality alarm, the analysis control unit 116 checks the presence / absence of analysis settings stored in the memory unit 117, for example (S10). If the analysis setting is present (Yes in S10), the process proceeds to step S11, and the analysis is started. If there is no analysis setting (No in S10), the process ends.

  In step S11, the analysis control unit 116 sets an initial value to the identification number i for identifying the signal processing unit 111 and the selector 112 that perform the return. Here, it is assumed that identification numbers that are incremented one by one in order from “1” are assigned from the first signal processing unit 111-1 to the N-th signal processing unit 111 -N illustrated in FIG. 1. Also, it is assumed that identification numbers that are incremented by 1 in order from “1” are assigned from the first selector 112-1 to the Nth selector 112-N. For this reason, the initial value of the identification number i is “1”.

Next, the analysis control unit 116 causes the selector control unit 114 to perform a loopback setting for the selector 112 corresponding to the identification number i (S12). When the return setting of the selector 112 corresponding to the identification number i is performed, the data signal output from the signal processing unit 111 corresponding to the identification number i is returned to the signal processing unit 111 corresponding to the identification number i, and the identification number Received by the signal processing unit 111 corresponding to i.
Then, the alarm detection unit 115 confirms whether an alarm is notified from the signal processing unit 111 corresponding to the identification number i, in other words, whether or not an abnormality has occurred in the signal processing unit 111 corresponding to the identification number i ( S13), and notifies the analysis control unit 116 of the confirmation result. The analysis control unit 116 stores the confirmation result in the memory unit 117 in association with the identification number i (S14).

  Here, when the occurrence of an abnormality is detected, the signal processing unit corresponding to the identification number i is the cause of the occurrence of the abnormality. Can be separated from the cause. It should be noted that the optical transmission / reception apparatus 110 can be configured to suppress the alarm notification being analyzed in order not to raise an unnecessary alarm when performing the loopback setting. Normally, when the alarm detection unit 115 detects an alarm, the alarm detection unit 115 notifies a predetermined external device. However, if the alarm notification being analyzed is set, the alarm detection unit 115 Even if detected, notification to the external device is not performed.

Next, the analysis control unit 116 causes the selector control unit 114 to cancel the return setting of the selector 112 corresponding to the identification number i (S15).
Next, the analysis control unit 116 confirms whether or not an abnormality has occurred in the signal processing unit 111 corresponding to the identification number i based on the confirmation result stored in the memory unit 117 (S16). If no abnormality has occurred (No in S16), the process proceeds to step S17. If an abnormality has occurred (Yes in S16), the process proceeds to step S19.

  In step S <b> 17, the analysis control unit 116 confirms whether or not the identification number i has reached the number N of signal processing units 111 provided in the optical transceiver 110. If the identification number i is smaller than N (No in S17), the process proceeds to step S18. If the identification number i is N (Yes in S17), the process proceeds to step S19.

In step S18, the analysis control unit 116 adds “1” to the identification number i. Then, the process returns to step S12. And the process after step S12 is repeated about the selector 112 and the signal processing part 111 corresponding to the identification number i.
In step S19, the analysis control unit 116 returns the identification number i to the initial value. Then, the process proceeds to step S20.

  In step S <b> 20, the analysis control unit 116 confirms whether or not an abnormality has occurred in the signal processing unit 111 corresponding to the identification number i based on the confirmation result stored in the memory unit 117. If an abnormality has occurred (Yes in S20), the process proceeds to step S21. If an abnormality has not occurred (No in S20), the process proceeds to step S22.

  In step S21, the analysis control unit 116 causes the alarm detection unit 115 to notify the external device of the occurrence of an abnormality in the signal processing unit 111 corresponding to the identification number i. The alarm detection unit 115 causes the output unit 119 to perform such notification. Then, the process ends.

  In step S <b> 22, the analysis control unit 116 confirms whether or not the identification number i has reached the number N of signal processing units 111 provided in the optical transceiver 110. If the identification number i is smaller than N (No in S22), the process proceeds to step S23. If the identification number i is N (Yes in S22), the process proceeds to step S24.

In step S23, the analysis control unit 116 adds “1” to the identification number i. Then, the process returns to step S20. And the process which confirms whether abnormality generate | occur | produced in the signal processing part 111 corresponding to the identification number i is repeated.
In step S24, the analysis control unit 116 causes the alarm detection unit 115 to notify the external device that no abnormality has occurred. The alarm detection unit 115 causes the output unit 119 to perform such notification.

  According to the flow described above, it is possible to specify which signal processing unit 111 has an abnormality among the plurality of signal processing units 111.

  In the flow illustrated in FIG. 3, the process is started when the alarm detection unit 115 detects an alarm, but the process in the first embodiment is not limited to such an example. For example, in order to allow the user to perform analysis at an arbitrary timing, the optical transmission / reception device 110 has a function of forcibly starting analysis, and starts analysis processing even when forced analysis start is set. Specifically, when an analysis instruction is input from the user via the input unit 118, the analysis control unit 116 starts analysis processing. Such an input unit 118 may be realized by an input device provided in the optical transmission / reception device 110. In addition, when an analysis instruction is input from another device via the input unit 118, the analysis control unit 116 starts analysis processing. Such an input unit 118 may be realized by a communication interface device that communicates with a network. When the analysis process is started in response to an instruction from the user, the analysis control unit 116 may skip the process in step S10 illustrated in FIG.

Embodiment 2. FIG.
FIG. 4 is a block diagram schematically showing an example of the optical transmission system 200 according to the second embodiment.
The optical transmission system 200 includes, for example, a first optical transmission / reception device 210A and a second optical transmission / reception device 210B. The first optical transmission / reception device 210A and the second optical transmission / reception device 210B are configured in the same manner, and hereinafter referred to as the optical transmission / reception device 210 unless it is particularly necessary to distinguish between them.

  The optical transmission / reception apparatus 210 according to the second embodiment includes a first signal processing unit 211-1, a second signal processing unit 211-2,..., An Nth signal processing unit 211-N (N is 2 or more). Integer), the first selector 112-1, the second selector 112-2,..., The Nth selector 112-N, the control unit 213, the memory unit 117, the input unit 118, and the output unit. 119. Each of the first signal processing unit 211-1, the second signal processing unit 211-2,..., And the Nth signal processing unit 211-N is configured in the same manner. When it is not necessary to distinguish, it is called a signal processing unit 211. In addition, since each of the first selector 112-1, the second selector 112-2,..., And the Nth selector 112-N is configured in the same manner, there is no need to distinguish between them in the following. Is referred to as selector 112. The selector 112, the selector control unit 114, the memory unit 117, the input unit 118, and the output unit 119 in the optical transmission / reception device 210 in the second embodiment are configured in the same manner as the optical transmission / reception device 110 in the first embodiment.

The plurality of signal processing units 211 are arranged so as to process data signals in order.
Each signal processing unit 211 performs a predetermined process on the data signal input from the upstream side of the data signal processing path, and outputs the processed data signal to the downstream side. The signal processing unit 211 gives performance information indicating a predetermined processing performance value to the performance information monitoring unit 221 when the processing of the data signal is executed. For example, the performance information indicates various processing performance values such as the number of error corrections of received data, the number of errors, and the input / output level of light.

The control unit 213 controls processing in the optical transmission / reception device 210.
The control unit 213 includes a selector control unit 114, an analysis control unit 216, a threshold setting unit 220, and a performance information monitoring unit 221. The selector control unit 114 of the control unit 213 in the second embodiment is configured in the same manner as in the first embodiment.

The threshold setting unit 220 sets at least one of a maximum value, a minimum value, and an allowable variation amount for each processing performance as a threshold for determining that an abnormality has occurred in the performance information monitoring unit 221. This setting may be performed according to an instruction from the user via the input unit 118.
The performance information monitor unit 221 monitors the processing performance of each signal processing unit 211. Specifically, the performance information monitoring unit 221 monitors the processing performance of each signal processing unit 211 based on the performance information transmitted from each signal processing unit 211. Then, the performance information monitoring unit 221 gives the performance information sent from each signal processing unit 211 to the analysis control unit 216.

  Based on the threshold set by the threshold setting unit 220, the analysis control unit 216 detects the presence / absence of an abnormality from the monitor information from the performance information monitor unit 221. For example, the analysis control unit 216 compares the value indicated by the performance information monitored by the performance information monitoring unit 221 with the corresponding threshold set by the threshold setting unit 220. And the analysis control part 216, when the value shown by performance information exceeds the maximum value set as a threshold value, when the value shown by performance information falls below the minimum value set as a threshold value, or performance information When the fluctuation amount of the value indicated by exceeds the allowable fluctuation amount set as the threshold, it is determined that an event corresponding to alarm detection has occurred, and analysis processing is started as in the first embodiment. Note that the analysis control unit 216 determines whether or not an abnormality has occurred in step S13 illustrated in FIG. 3 based on the value indicated by the performance information monitored by the performance information monitor unit 221.

  As described above, according to the second embodiment, an abnormal part can be analyzed even in the case of signal degradation that does not lead to an alarm, such as a decrease or fluctuation in the input / output level of light.

Embodiment 3 FIG.
FIG. 5 is a block diagram schematically showing an example of the optical transmission system 300 according to the third embodiment.
The optical transmission system 300 includes, for example, a first optical transmission / reception device 310A and a second optical transmission / reception device 310B. The first optical transmission / reception device 310A and the second optical transmission / reception device 310B are configured in the same manner, and hereinafter referred to as the optical transmission / reception device 310 unless it is particularly necessary to distinguish between them.

  The optical transmission / reception apparatus 310 according to the third embodiment includes a first signal processing unit 211-1, a second signal processing unit 211-2,..., An Nth signal processing unit 211-N (N is 2 or more). Integer), the first selector 112-1, the second selector 112-2,..., The Nth selector 112-N, the control unit 313, the memory unit 117, the input unit 118, and the output unit. 119. Each of the first signal processing unit 211-1, the second signal processing unit 211-2,..., And the Nth signal processing unit 211-N is configured in the same manner. When it is not necessary to distinguish, it is called a signal processing unit 211. In addition, since each of the first selector 112-1, the second selector 112-2,..., And the Nth selector 112-N is configured in the same manner, there is no need to distinguish between them in the following. Is referred to as selector 112. The optical transmission / reception apparatus 310 in the third embodiment is configured in the same manner as the optical transmission / reception apparatus 210 in the second embodiment except for the control unit 313.

The control unit 313 controls processing in the optical transmission / reception device 310.
The control unit 313 includes a selector control unit 114, an analysis control unit 316, a threshold setting unit 220, a performance information monitoring unit 221, and a time setting unit 322. The control unit 313 in the third embodiment is configured in the same manner as the control unit 213 in the second embodiment except for the time setting unit 322 and the analysis control unit 316.

  In the second embodiment, when an abnormality is detected with the value monitored by the performance information monitor unit 221, the main data signal is not necessarily disconnected, but analysis is performed. In such a case, the main data signal path is changed (path switching by the selector 112), so that the main data signal is temporarily interrupted.

In the third embodiment, the time setting unit 322 sets a time zone in which analysis can be performed. This setting is performed according to an instruction from the user via the input unit 118.
The analysis control unit 316 does not perform the analysis until the time set by the time setting unit 322 even when the abnormality is detected by the value indicated by the performance information, and performs the analysis after the set time is reached.

  According to the third embodiment, when the time period during which the device usage rate is low is known in advance, the time during which the analysis can be performed is set, thereby reducing the influence of the main signal interruption during the analysis. can do.

  100, 200, 300 Optical transmission system, 110, 210, 310 Optical transceiver, 111, 211 Signal processing unit, 112 Selector, 113, 213, 313 Control unit, 114 Selector control unit, 115 Alarm detection unit, 116, 216 316 Analysis control unit, 117 memory unit, 118 input unit, 119 output unit, 220 threshold value setting unit, 221 performance information monitoring unit, 322 time setting unit.

Claims (11)

A plurality of signal processing units;
Multiple selectors,
A communication device comprising a control unit,
Each of the plurality of signal processing units processes the data signal in order along the processing path of the data signal,
Each of the plurality of selectors is provided in association with each of the plurality of signal processing units,
The one selector included in the plurality of selectors receives the data signal output from the one signal processing unit associated with the one selector in response to an instruction from the control unit. Enter
The control unit selects one signal processing unit included in the plurality of signal processing units in order from the upstream of the processing path, and selects one signal processing unit corresponding to the selected signal processing unit. By analyzing, the data signal output from the selected signal processing unit is input to the selected signal processing unit to detect whether or not an abnormality occurs in the selected signal processing unit A communication device characterized by performing processing. In the analysis process, the control unit determines that the selected signal processing unit has a cause of an abnormality when the selected signal processing unit detects the occurrence of the abnormality. The communication apparatus according to 1. The communication apparatus according to claim 2, further comprising an output unit that outputs information indicating a signal processing unit that is determined to have an abnormality cause by the control unit to an external device. The control unit starts the analysis process when the occurrence of an abnormality is detected in any of the plurality of signal processing units when the analysis process is not being performed. The communication device according to any one of the above. It further includes an input unit that receives input of analysis instructions from the user,
The communication device according to any one of claims 1 to 3, wherein the control unit starts the analysis processing when the input unit receives the input of the analysis instruction. It further includes an input unit that receives input of analysis instructions from other devices,
The communication device according to any one of claims 1 to 3, wherein the control unit starts the analysis processing when the input unit receives the input of the analysis instruction. Each of the plurality of signal processing units, when an abnormality occurs, notifies the control unit of the occurrence of the abnormality,
The communication device according to any one of claims 1 to 3, wherein the control unit detects occurrence of an abnormality based on the notification. Each of the plurality of signal processing units notifies the control unit of a value indicating processing performance at the time of executing the processing of the data signal,
The control unit detects occurrence of an abnormality based on a value indicating the processing performance of each of the plurality of signal processing units and a set threshold value. The communication device according to item. The communication device according to claim 8, further comprising an input unit that receives the setting of the threshold value from a user. The communication device according to any one of claims 1 to 3, wherein the control unit performs the analysis processing at a set time. The communication device according to claim 10, further comprising an input unit configured to receive the time setting from a user.

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