CN103988469A - Communication obstacle detection device - Google Patents
Communication obstacle detection device Download PDFInfo
- Publication number
- CN103988469A CN103988469A CN201180075527.5A CN201180075527A CN103988469A CN 103988469 A CN103988469 A CN 103988469A CN 201180075527 A CN201180075527 A CN 201180075527A CN 103988469 A CN103988469 A CN 103988469A
- Authority
- CN
- China
- Prior art keywords
- frame
- internal state
- timing
- received
- maintaining part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0793—Network aspects, e.g. central monitoring of transmission parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
A communication obstacle detection device is provided with a frame reception unit (optical connector (702), O/E conversion unit (703) and A/D conversion unit (704), as well as LAN connector (705) and main signal processing unit (706)) for receiving frames from an ONU (2) and a host network, a frame storage unit (710) which temporarily stores frames, a frame transmission unit (713) for transmitting the received frames to the frame storage unit (710), a state monitoring unit (712) which outputs an alert notification in accordance with the state of the communication obstacle detection device itself and the ONU (2), an internal state retaining unit (708) the internal state of which transitions in accordance with a notification that includes the alert notification, and an overwrite processing assessment unit (709) which instructs the frame transmission unit (713) to halt transmission of frames in accordance with the internal state.
Description
Technical field
The present invention relates to a kind of communication failure checkout gear, this communication failure checkout gear be applicable to such as GE-PON (Gigabit Ethernet (registered trade mark)-Passive Optical Network: gigabit Ethernet-EPON) the optical multiplexing communication system such as system, for determine in early days its reason when breaking down.
Background technology
As a kind of method that the optical fiber access services such as FTTH (Fiber To The Home: Fiber to the home) is offered to user, have EPON (PON:Passive Optical Network) mode.
In this PON system, adopt a plurality of optical terminal devices (ONU:Optical Network Unit, optical network unit) structure of device (OLT:Optical Line Terminal, optical line terminal) and transmission lines (optical fiber) in common field.Thus, can provide at an easy rate the high speed access service of having used optical fiber, nowadays, in ONUGe family, obtain universal.
In addition, in PON system, by the cpu function portion of ONU, can detect the abnormal of ONU.In addition, ONU will represent that this abnormal alarm, state information notification are to OLT at the delivery time that obtains the license of OLT.Afterwards, this alarm, state information are notified the supervision control card of OLT via the cpu function portion of OLT.Then, by confirmation, monitor the information of control card with monitoring the TE that control card is connected terminal installations such as () PC, can confirm ONU in abnormality.
In addition, for example, in the disclosed PON system of patent documentation 1, can utilize the state of confirming ONU compared with the terminal of the more close local side of ONU (specific ONU).Thus, can when breaking down, from ONU mono-side, know failure cause, can make the analysis and investigation of failure cause more efficient.Especially, the analysis in situation about breaking down in the time of making setting newly establish ONU is more efficient, thereby can shorten, is set the activity duration.
On the other hand, while there is communication failure in the optical fiber access services such as FTTH, in OLT or ONU, may become malfunction owing to receiving certain particular frame.In this case, in the situation that not confirming this frame, possibly cannot confirm failure cause.
Therefore,, as the method for confirming the frame in PON interval, there is the method for inserting frame-grab (flame capture) device between OLT and ONU.By utilizing this frame-grab device to confirm received frame, can confirm to be sent to the frame of OLT or ONU.
Prior art document
Patent documentation
Patent documentation 1
Japanese Patent Laid-Open 2009-27518 communique
Summary of the invention
Invent technical problem to be solved
Yet, the limited amount of the frame that frame-grab device once can be caught.Therefore, there are the following problems: be difficult to confirm the interval frame sending at PON before just breaking down.
In addition, in order to connect frame trap setting, need to take out the optical fiber being connected with ONU with OLT.Therefore, also there are the following problems: during taking out light, communication will disconnect.
In addition, in existing communication failure checkout gear, the communication that can detect communication service provider one side, user's house one side disconnects.In addition, as disclosed in Patent Document 1, by user's house one side is arranged to specific ONU, thereby can detect the form of the frame the state of ONU being detected, receiving when abnormal, wherein, described specific ONU only for determining disconnection that transmission lines connects, from the reception signal of transmission lines.
Yet, there is the more time-consuming problem of this specific ONU that arranges.In addition, even if only can confirm form, still cannot detect the content of received frame own, therefore have the problem that possibly cannot determine failure cause.
The present invention is accomplished in order to address the above problem, and its object is to provide a kind of communication failure checkout gear, and this communication failure checkout gear, by when breaking down, obtains the frame having received before just having broken down, thereby can promptly determine failure cause.
The technical scheme that technical solution problem adopts
Communication failure checkout gear involved in the present invention comprises: from the frame acceptance division of ONU and upper network received frame, temporarily preserve the frame storage unit of frame, the frame being received by frame acceptance division is sent to the frame sending part of frame storage unit, according to the Stateful Inspection portion of the State-output alert notification of the machine and ONU, according to comprising from the alert notification of Stateful Inspection portion in the interior notifying changed internal state maintaining part of internal state itself, and the frame that sends to frame sending part the indication that stops sending frame according to the internal state of internal state maintaining part stops instruction unit.
In addition, communication failure checkout gear involved in the present invention comprises: from the frame acceptance division of OLT and the next terminal received frame, temporarily preserve frame frame storage unit, by the frame being received by frame acceptance division be sent to frame storage unit frame sending part, according to the Stateful Inspection portion of the machine output alert notification, according to comprise from the alert notification of Stateful Inspection portion notifying changed itself the internal state maintaining part of internal state and the frame that sends to frame sending part the indication that stops sending frame according to the internal state of described internal state maintaining part stop instruction unit.
Invention effect
According to the present invention, owing to adopting said structure, therefore can confirm the received frame before just having broken down, thus the amount of information in the time of increasing analyzing failure cause, the investigation operation that therefore can make to determine before failure cause is more efficient.Thus, can shorten the time of determining failure cause.
Accompanying drawing explanation
Fig. 1 means the block diagram of the structure of the PON system that the OLT that has been suitable for the related communication failure checkout gear of embodiments of the present invention 1 is included.
Fig. 2 means the block diagram of the structure of the cpu function portion shown in Fig. 1.
Fig. 3 means the flow chart of the frame preservation action of the communication failure checkout gear shown in Fig. 1.
Fig. 4 means the figure of the state variation of the internal state maintaining part shown in Fig. 1.
Fig. 5 means that the state of the communication failure checkout gear shown in Fig. 1 obtains the flow chart of action.
Fig. 6 means that the frame of the communication failure checkout gear shown in Fig. 1 obtains the flow chart of action.
Fig. 7 means the block diagram of the structure of the PON system that the ONU that has been suitable for the related communication failure checkout gear of embodiments of the present invention 1 is included.
Fig. 8 means the figure of the state variation of the internal state maintaining part shown in Fig. 7.
Fig. 9 means the block diagram of the structure of the PON system that the OLT that has been suitable for the related communication failure checkout gear of embodiments of the present invention 2 is included.
Figure 10 means the block diagram of the structure of the cpu function portion shown in Fig. 9.
Figure 11 means the figure of the state variation of the internal state maintaining part shown in Fig. 9.
Figure 12 means the block diagram of the structure of the PON system that the ONU that has been suitable for the related communication failure checkout gear of embodiments of the present invention 2 is included.
Figure 13 means the figure of the state variation of the internal state maintaining part shown in Figure 12.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are elaborated.
Execution mode 1
First, the situation that the related communication failure checkout gear of execution mode 1 is applicable to OLT1 is shown.Fig. 1 means the block diagram of the structure of the PON system that the OLT1 that has been suitable for the related communication failure checkout gear of embodiments of the present invention 1 is included.
As shown in Figure 1, PON system comprises: be arranged at communication service provider OLT1, be arranged at a plurality of ONU2a～2n of user's house and the optical splitter 3 that OLT1 is connected with each ONU2a～2n.Between OLT1 and optical splitter 3, by optical fiber 4, be connected, in addition, between each ONU2a～2n and optical splitter 3, by optical fiber 5a～5n, be connected.In addition, OLT1 is connected with TE6.
In addition, if following, without special, distinguish, by ONU2a～2n and optical fiber 5a～5n referred to as ONU2 and optical fiber 5.
Then, the structure of OLT1 is described.
As shown in Figure 1, OLT1 comprises a plurality of PON interface card 7a～7n and monitors that control card 8 forms.In addition,, if distinguish without special as lower, PON interface card 7a～7n is referred to as to PON interface card 7.
PON interface card 7 is transceiving data between ONU2 and upper network.In addition only the data receiver action from ONU2 and upper network is described as follows.This PON interface card 7 comprises: in device, judging part (frame stops instruction unit) 709 and frame storage unit 710 are processed in IF701, optical connector 702, O/E converter section 703, A/D converter section 704, LAN connector 705, main signal handling part 706, cpu function portion 707, internal state maintaining part 708, covering.
In device IF701 with monitor the device described later of control card 8 in IF802 be connected.
Optical connector 702 is connected with optical splitter 3 by optical fiber 4, and the frame sending via optical splitter 3 from ONU2 is received.The frame receiving by this optical connector 702 is output to O/E converter section 703.
O/E converter section 703 converts the frame being received by optical connector 702 (light signal) to the signal of telecommunication.The frame that converts the signal of telecommunication to by this O/E converter section 703 is output to A/D converter section 704.
A/D converter section 704 converts the frame that converts the signal of telecommunication (analog signal) through O/E converter section 703 to cpu function portion 707 discernible digital signal.The frame that converts digital signal to by this A/D converter section 704 is output to cpu function portion 707.
LAN connector 705 is connected with upper network by cable.
706 pairs of frames that send via LAN connector 705 from upper network of main signal handling part receive.The frame receiving by this main signal handling part 706 is output to cpu function portion 707.
In addition optical connector 702, O/E converter section 703 and A/D converter section 704, LAN connector 705 and main signal handling part 706 configuration frame acceptance divisions.
Each function part of 707 pairs of PON interface cards 7 of cpu function portion is controlled.As shown in Figure 2, this cpu function portion 707 comprises: control part 711, Stateful Inspection portion 712 and frame sending part 713.
711 pairs of main signal handling parts 706 of control part are controlled, and LAN connector 705 and the connection status of upper network are controlled.
The state of 712 pairs of PON interface cards 7 of Stateful Inspection portion and each ONU2 monitors, and according to this state, internal state maintaining part 708 is exported to alert notifications.In addition, in the situation that receiving status request notice from supervision control card 8 via IF701 in installing, make the state answer notification that represents above-mentioned state export supervision control card 8 to via IF701 in device.
Frame sending part 713 identifies the frame from A/D converter section 704 and main signal handling part 706, and this frame is sent to frame storage unit 710.In addition, in the situation that receiving frame expiry notification from covering processing judging part 709, stop sending frames to frame storage unit 710.
In addition, cpu function portion 707, in the situation that receiving frame request notice from supervision control card 8 via IF701 in installing, exports this notice to frame storage unit 710.
Internal state maintaining part 708, according to the alert notification from Stateful Inspection portion 712 and from the internal state change notice that monitors control part 803, changes the internal state of itself.
Cover processing judging part 709 and at any time the internal state of internal state maintaining part 708 is confirmed, according to this internal state, export frame expiry notification to frame sending part 713, this frame expiry notification is used to indicate and stops sending frames to frame storage unit 710.
Frame storage unit 710 temporarily (by covering) is preserved the frame from frame sending part 713 continuously.In addition, receive frame request notice from cpu function portion 707 in the situation that, the frame of having preserved is exported to and monitors control card 8 via IF701 in cpu function portion 707 and device.
In addition, the state of 8 pairs of each PON interface cards 7 of supervision control card monitors.This supervision control card 8 is by IF802 in LAN connector 801, device and monitor that control part 803 forms.
LAN connector 801 is connected with TE6 by cable.
In device, in the device of IF802 and each PON interface card 7, IF701 is connected.
The state that monitors 803 pairs of each PON interface cards 7 of control part monitors.This supervision control part 803, in the situation that receiving status request notice from TE6 via LAN connector 801, makes this notice be sent to this PON interface card 7 via IF802 in device.Then, in the situation that receiving state answer notification from this PON interface card 7 via IF802 in installing, make this notice export TE6 to via LAN connector 801.
In addition, monitor that control part 803 makes frame request notice export this PON interface card 7 to via IF802 in device, from this PON interface card 7 via IF802 received frame in device.
In addition, monitor the also various notices of internal state maintaining part 708 output (internal state change notice, triggering Notification of Changes etc.) to PON interface card 7 of control part 803.
Next, the action of communication failure checkout gear is as constructed as above described.
First, with reference to Fig. 3, the frame of communication failure checkout gear is preserved to action and describe.
As shown in Figure 3, at the frame of communication failure checkout gear, preserve in action, first, by frame acceptance division, carry out received frame (step ST31).That is to say, 702 pairs of frames that send from ONU2 of optical connector receive.Then, O/E converter section 703 converts this frame to the signal of telecommunication, and A/D converter section 704 converts this signal of telecommunication to cpu function portion 707 discernible digital signal.In addition, main signal handling part 706 receives the frame sending from upper network.
Then, the frame sending part 713 of cpu function portion 707 is sent to frame storage unit 710 (step ST32) by the frame from frame acceptance division.
Then, frame storage unit 710 is temporarily preserved the frame (step ST33) from frame sending part 713.
On the other hand, covering processing judging part 709 confirms the internal state of internal state maintaining part 708 at any time, according to this internal state, export frame expiry notification to frame sending part 713, this frame expiry notification is used to indicate and stops sending frame (step ST34) to frame storage unit 710.
Then, frame sending part 713 stops sending frames (step ST35) to frame storage unit 710 according to the frame expiry notification from covering processing judging part 709.
Herein, with reference to Fig. 4, the state variation of internal state maintaining part 708 is described.
In Fig. 4, in internal state maintaining part 708 in state A in the situation that, cover to process judging part 709 not to frame sending part 713 output frame expiry notifications, in internal state maintaining part 708, in state B in the situation that, cover and process judging part 709 to frame sending part 713 output frame expiry notifications.
Herein, the triggering a1 that internal state maintaining part 708 is changed to state B from state A is from monitoring the internal state change notice of control part 803 or from the specific alert notification of Stateful Inspection portion 712.
In addition, in the alert notification from Stateful Inspection portion 712, such as can using the fault of PON interface card 7 and PON interface card 7 with a plurality of alarms such as disconnection of communicating by letter between ONU2 arbitrarily as triggering a1, also can be only for example, using single alarm (communication of ONU2 disconnects) as triggering a1.
In addition, which alarm is set by internal state maintaining part 708 in advance as triggering a1.This setting can be changed by the triggering Notification of Changes from monitoring control part 803.
On the other hand, the triggering b1 that only internal state maintaining part 708 is varied to state A from state B is made as from the internal state change notice that monitors control part 803.
Thus, even if PON interface card 7 is reset, get back to initial condition, still can avoid the frame data in frame maintaining part 710 to be initialised.
Then,, with reference to Fig. 5, the state of communication failure checkout gear is obtained to action and describe.
As shown in Figure 5, at the state of communication failure checkout gear, obtain in action, first, by TE6, to monitoring that control part 803 sends about the status request of PON interface card 7 and/or ONU2, notified.Then, monitor that control part 803 exports the status request notice from TE6 to cpu function portion 707 (step ST51).
Then, the Stateful Inspection portion 712 of cpu function portion 707 exports the state answer notification that represents the state of corresponding PON interface card 7 and/or ONU2 to monitor control part 803 to according to this status request notice.Then, monitor that control part 803 exports the state answer notification from cpu function portion 707 to TE6 (step ST52).
Then,, with reference to Fig. 6, the frame of communication failure checkout gear is obtained to action and describe.
As shown in Figure 6, at the frame of communication failure checkout gear, obtain in action, first, by monitoring that 803 pairs of cpu function portions 707 of control part send frame request and notify.Then, cpu function portion 707 outputs to frame maintaining part 710 (step ST61) by the frame request notice from monitoring control part 803.
Then, frame storage unit 710 exports the frame of having preserved to monitor control part 803 (step ST62) to according to this frame request notice.
Thus, in the situation that there is communication failure, can detect all frames that received by OLT1 before firm generation communication failure.
Then, the situation that the related communication failure checkout gear of execution mode 1 is applicable to ONU2 is shown.Fig. 7 means the block diagram of the structure of the PON system that the ONU2 that has been suitable for the related communication failure checkout gear of embodiments of the present invention 1 is included.
PON system shown in Fig. 7 is deleted TE6 from the PON system shown in Fig. 1, and TE9a～9n is connected in to each ONU2a～2n.In addition, if below without special differentiation, TE9a～9n is referred to as to TE9.
Then, the structure of ONU2 is described.
ONU2 is transceiving data between OLT1 and TE9.In addition,, only the data receiver action from OLT1 and TE9 is described.As shown in Figure 7, this ONU2 comprises: judging part 208 and frame storage unit 209 are processed in optical connector 201, O/E converter section 202, A/D converter section 203, LAN connector 204, main signal handling part 205, cpu function portion 206, internal state maintaining part 207, covering.
Optical connector 201 is connected with optical splitter 3 by optical fiber 5, and the frame sending via optical splitter 3 from OLT1 is received.The frame receiving by this optical connector 201 is output to O/E converter section 202.
O/E converter section 202 converts the frame being received by optical connector 201 (light signal) to the signal of telecommunication.The frame converting to by this O/E converter section 202 after the conversion of the signal of telecommunication is output to A/D converter section 203.
A/D converter section 203 converts the frame that converts the signal of telecommunication (analog signal) through O/E converter section 202 to cpu function portion 206 discernible digital signal.The frame that converts digital signal to by this A/D converter section 203 is output to cpu function portion 206.
LAN connector 204 is connected with TE9 by cable.
205 pairs of frames that send via LAN connector 204 from TE9 of main signal handling part receive.The frame receiving by this main signal handling part 205 is output to cpu function portion 206.
In addition optical connector 201, O/E converter section 202 and A/D converter section 203, LAN connector 204 and main signal handling part 205 configuration frame acceptance divisions.
Each function part of 206 couples of ONU2 of cpu function portion is controlled.Though not shown, this cpu function portion 206 is identical with the cpu function portion 707 shown in Fig. 2, comprising: control part 210, Stateful Inspection portion 211 and frame sending part 212.
210 pairs of main signal handling parts 205 of control part are controlled, and LAN connector 204 and the connection status of TE9 are controlled.
The state of 211 couples of ONU2 of Stateful Inspection portion monitors, and according to this state, internal state maintaining part 207 is exported to alert notifications.In addition, in the situation that receiving status request notice from OLT1 via optical splitter 3, make the state answer notification that represents above-mentioned state export OLT1 to via optical splitter 3.
Frame sending part 212 is sent to frame storage unit 209 by the frame from A/D converter section 203 and main signal handling part 205.In addition, in the situation that receiving frame expiry notification from covering processing judging part 208, stop sending frames to frame storage unit 209.
In addition, cpu function portion 206, in the situation that receiving frame request notice from OLT1 via optical splitter 3, exports this notice to frame storage unit 209.
Internal state maintaining part 207 is notified according to the alert notification from Stateful Inspection portion 211 and from the internal state change of OLT1, changes the internal state of itself.
Cover processing judging part 208 and at any time the internal state of internal state maintaining part 207 is confirmed, according to this internal state, export frame expiry notification to frame sending part 212, this frame expiry notification is used to indicate and stops sending frames to frame storage unit 209.
Frame storage unit 209 temporarily (by covering) is preserved the frame from frame sending part 212 continuously.In addition, receive frame request notice from cpu function portion 206 in the situation that, via cpu function portion 206, export the frame of having preserved to OLT1.
Next, the action of communication failure checkout gear is as constructed as above described.In addition, action when communication failure checkout gear is applicable to the ONU2 also action when being applicable to OLT1 is identical, referring to Fig. 3,5,6, describes.
First, the frame of communication failure checkout gear being preserved to action describes.
As shown in Figure 3, at the frame of communication failure checkout gear, preserve in action, first, by frame acceptance division, receive the frame (step ST31) from OLT1.That is to say, 201 pairs of frames that send from OLT1 of optical connector receive.Then, O/E converter section 202 converts frame to the signal of telecommunication, and A/D converter section 203 converts this signal of telecommunication to cpu function portion 206 discernible digital signal.In addition, main signal handling part 205 receives the frame sending from TE9.
Then, the frame sending part 212 of cpu function portion 206 is sent to frame storage unit 209 (step ST32) by the frame from frame acceptance division.
Then, frame storage unit 209 is temporarily preserved the frame (step ST33) from frame sending part 212.
On the other hand, cover processing judging part 208 and at any time the internal state of internal state maintaining part 207 is confirmed, according to this internal state, export frame expiry notification to frame sending part 212, this frame expiry notification is used to indicate and stops sending frames to frame storage unit 209.
Then, frame sending part 212 stops sending frames (step ST35) to frame storage unit 209 according to the frame expiry notification from covering processing judging part 208.
Herein, with reference to Fig. 8, the state variation of internal state maintaining part 207 is described.
In Fig. 8, in internal state maintaining part 207 in state C in the situation that, cover to process judging part 208 not to frame sending part 212 output frame expiry notifications, in internal state maintaining part 207, in state D in the situation that, cover and process judging part 208 to frame sending part 212 output frame expiry notifications.
Herein, the triggering c1 that internal state maintaining part 207 is changed to state D from state C is from the internal state change notice of OLT1 or from the specific alert notification of Stateful Inspection portion 211.
In addition, in the alert notification from Stateful Inspection portion 211, such as can be using a plurality of alarms such as disconnection of communicating by letter between the fault of ONU2 and OLT1 and ONU2 as triggering c1, also can be only for example, using single alarm (communication of ONU2 disconnects) as triggering c1.
In addition, which alarm is set by internal state maintaining part 207 in advance as triggering c1.This setting can be changed by the triggering Notification of Changes from OLT1.
On the other hand, the triggering d1 that only internal state maintaining part 207 is varied to state C from state D is made as the internal state change notice from OLT1.
Thus, even if ONU2 resets, get back to initial condition, still can avoid the frame data in frame maintaining part 209 to be initialised.
Next, the state of communication failure checkout gear being obtained to action describes.
As shown in Figure 5, at the state of communication failure checkout gear, obtain in action, first, by OLT1, cpu function portion 206 is sent about the status request of ONU2 and notified.
Then, cpu function portion 206 exports the state answer notification that represents the state of ONU2 to OLT1 (step ST52) according to this status request notice.
Next, the frame of communication failure checkout gear being obtained to action describes.
As shown in Figure 6, at the frame of communication failure checkout gear, obtain in action, first, by OLT1, cpu function portion 206 is sent to frame request and notify.Then, cpu function portion 206 is by frame request notice output frame maintaining part 209 (the step ST61) from OLT1.
Then, frame storage unit 209 exports the frame of having preserved to OLT1 (step ST62) according to this frame request notice.
Thus, in the situation that there is communication failure, can detect all frames that received by ONU2 before firm generation communication failure.
In addition, the situation that communication failure checkout gear of the present invention is applicable to OLT1 has been shown in Fig. 1, the situation that communication failure checkout gear of the present invention is applicable to ONU2 has been shown in Fig. 7, but also can respectively communication failure checkout gear be applicable to OLT1 and ONU2.
As mentioned above, according to present embodiment 1, be configured to and before just notifying specific alarm etc., preserve the frame being received by PON interface card 7/ONU2 respectively, therefore after breaking down, can confirm the frame having received before just having broken down.Consequently, the operation producing in the time of making analyzing failure cause is more efficient, thereby can shorten the time of finding out failure cause.
Execution mode 2
First, the situation that the related communication failure checkout gear of execution mode 2 is applicable to OLT1 is shown.Fig. 9 means the block diagram of the structure of the PON system that the OLT1 that has been suitable for the related communication failure checkout gear of embodiments of the present invention 2 is included, and Figure 10 means the block diagram of the structure of cpu function portion 707.The related PON system of execution mode 2 shown in Fig. 9,10, on the basis of the related PON system of the execution mode 1 shown in Fig. 1,2, has been added received frame timing portion 714 and timing instruction unit 715.Other structure is identical, and also description thereof is omitted for mark same numeral.
Received frame timing portion 714 starts notice in the situation that receiving timing from timing instruction unit 715, starts timing, through after the predefined time, exports timing end notification to timing instruction unit 715.In addition, during starting to finish to timing from timing, start notice in the situation that again receiving timing from timing instruction unit 715, replacement timer, restarts timing.In addition, the timing time of setting can change by the timing Notification of Changes from monitoring control part 803.
Timing instruction unit 715 is in the situation that from main signal handling part 706, A/D converter section 704 or monitor that control part 803 receives the frame with specific frame format or frame structure, start notice by timing and export received frame timing portion 714 to.In addition, in the situation that receiving timing end notification from received frame timing portion 714, export internal state change notice to internal state maintaining part 708.
Then,, with reference to Figure 11, the state variation of internal state maintaining part 708 is described.
In Figure 11, in internal state maintaining part 708 in state E in the situation that, cover to process judging part 709 not to frame sending part 713 output frame expiry notifications, in internal state maintaining part 708, in state F in the situation that, cover and process judging part 709 to frame sending part 713 output frame expiry notifications.
Herein, the triggering e1 that internal state maintaining part 708 is changed to state F from state E is from monitoring the internal state change notice of control part 803 or notifying from specific alert notification or the internal state change of cpu function portion 707.
On the other hand, the triggering f1 that only internal state maintaining part 708 is varied to state E from state F is made as from the internal state change notice that monitors control part 803.
Thus, even if PON interface card 7 is reset, get back to initial condition, still can avoid the frame data in frame maintaining part 710 to be initialised.
Other action is identical with execution mode 1, and description thereof is omitted.
Then, the situation that the related communication failure checkout gear of execution mode 2 is applicable to ONU2 is shown.Figure 12 means the block diagram of the structure of the PON system that the ONU2 that has been suitable for the related communication failure checkout gear of embodiments of the present invention 2 is included.The related PON system of execution mode 2 shown in Figure 12, on the basis of the related PON system of the execution mode 1 shown in Fig. 7, has been added received frame timing portion 213.In addition, though not shown, identical with the cpu function portion 707 of Figure 10, in cpu function portion 206, added timing instruction unit 214.Other structure is identical, and also description thereof is omitted for mark same numeral.
Received frame timer 213 starts notice in the situation that receiving timing from timing instruction unit 214, starts timing, through after the predefined time, exports timing end notification to timing instruction unit 214.In addition, in the situation that from timing, start to finish to timing during from timing instruction unit 214 again receive timing start notice, replacement timer, starts timing again.In addition, the timing time of setting can change by the timing Notification of Changes from OLT1.
Timing instruction unit 214 in the situation that receive the frame with specific frame format or frame structure from main signal handling part 205 or A/D converter section 203, starts notice by timing and exports received frame timing portion 213 to.In addition, in the situation that receiving timing end notification from received frame timing portion 213, export internal state change notice to internal state maintaining part 207.
Then,, with reference to Figure 13, the state variation of internal state maintaining part 207 is described.
In Figure 13, in internal state maintaining part 207 in state G in the situation that, cover to process judging part 208 not to frame sending part 212 output frame expiry notifications, in internal state maintaining part 207, in state H in the situation that, cover and process judging part 208 to frame sending part 212 output frame expiry notifications.
Herein, the triggering g1 that internal state maintaining part 207 is changed to state H from state G is from the internal state change notice of OLT1 or notifies from specific alert notification or the internal state change of cpu function portion 206.
On the other hand, the triggering h1 that only internal state maintaining part 207 is varied to state G from state H is made as the internal state change notice from OLT1.
Thus, even if ONU2 resets, get back to initial condition, still can avoid the frame data in frame maintaining part 209 to be initialised.
Identical with execution mode 1 in addition, description thereof is omitted.
As mentioned above, according to present embodiment 2, be configured to receive during having after the frame of specific frame format or frame structure at the appointed time and preserve the frame being received by PON interface card 7/ONU2 respectively, while therefore determining failure cause after fault occurs, can confirm the frame receiving after receiving particular frame, thereby the operation producing in the time of making analyzing failure cause is more efficient, shorten the time of finding out failure cause.
In addition, the present application can be carried out independent assortment to each execution mode in this scope of invention, or any inscape of each execution mode is out of shape or in each execution mode, is omitted inscape arbitrarily.
Industrial practicality
Communication failure checkout gear involved in the present invention is by the received frame before confirming just to break down, thereby can shorten the time of determining failure cause, the communication failure checkout gear that is applicable to use in optical multiplex communication system etc.
Label declaration
1OLT, 2, 2a～2n ONU, 3 optical splitters, 4, 5, 5a～5n optical fiber, 6, 9, 9a～9n TE, 7, 7a～7n PON interface card, 8 monitor control card, 201, 702 optical connectors, 202, 703O/E converter section, 203, 704A/D converter section, 204, 705, 801LAN connector, 205, 706 main signal handling parts, 206, 707CPU function part, 207, 708 internal state maintaining parts, 208, 709 cover processing judging part, 209, 710 frame storage units, 210, 711 control parts, 211, 712 Stateful Inspection portions, 212, 713 frame sending parts, 213, 714 received frame timing portions, 214, 715 timing instruction units, 701, IF in 802 devices, 803 monitor control part 803.
Claims (6)
1. a communication failure checkout gear, be applicable to and a plurality of ONU between the OLT that communicates, comprising:
Frame acceptance division from described ONU and upper network received frame;
Temporarily preserve the frame storage unit of frame;
The frame being received by described frame acceptance division is sent to the frame sending part of described frame storage unit;
According to the Stateful Inspection portion of the State-output alert notification of the machine and described ONU;
According to the notifying changed internal state maintaining part of internal state itself, in described notice, comprise the alert notification from described Stateful Inspection portion; And
The frame that sends to described frame sending part the indication that stops sending frame according to the internal state of described internal state maintaining part stops instruction unit.
2. a communication failure checkout gear, be applicable to and OLT between the ONU that communicates, comprising:
Frame acceptance division from described OLT and the next terminal received frame;
Temporarily preserve the frame storage unit of frame;
The frame being received by described frame acceptance division is sent to the frame sending part of described frame storage unit;
According to the Stateful Inspection portion of the State-output alert notification of the machine;
Internal state maintaining part according to notifying changed internal state own, comprises the alert notification from Stateful Inspection portion in described notice; And
The frame that sends to described frame sending part the indication that stops sending frame according to the internal state of described internal state maintaining part stops instruction unit.
3. communication failure checkout gear as claimed in claim 1, is characterized in that,
The frame that described frame storage unit has been preserved according to the request output from outside.
4. communication failure checkout gear as claimed in claim 2, is characterized in that,
The frame that described frame storage unit has been preserved according to the request output from outside.
5. communication failure checkout gear as claimed in claim 1, is characterized in that, comprising:
Received frame timing portion, this received frame timing portion, according to starting timing from outside notice, after the stipulated time, exports timing end notification; And
Timing instruction unit, this timing instruction unit is in the situation that receive the frame with specific frame format or frame structure from described ONU, described upper network or exterior terminal, timing is started to notice and export described received frame timing portion to, in the situation that receiving timing end notification from this received frame timing portion, export internal state change notice to described internal state maintaining part
Described internal state maintaining part is according to notify to change the internal state of itself from the internal state change of described timing instruction unit.
6. communication failure checkout gear as claimed in claim 2, is characterized in that, comprising:
Received frame timing portion, this received frame timing portion, according to starting timing from outside notice, after the stipulated time, exports timing end notification; And
Timing instruction unit, this timing instruction unit is in the situation that receive the frame with specific frame format or frame structure from described OLT or described the next terminal, timing is started to notice and export described received frame timing portion to, in the situation that receiving timing end notification from this received frame timing portion, export internal state change notice to described internal state maintaining part
Described internal state maintaining part is according to notify to change the internal state of itself from the internal state change of described timing instruction unit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2011/006954 WO2013088470A1 (en) | 2011-12-13 | 2011-12-13 | Communication obstacle detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103988469A true CN103988469A (en) | 2014-08-13 |
| CN103988469B CN103988469B (en) | 2016-11-30 |
Family
ID=
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597979A (en) * | 2016-12-08 | 2017-04-26 | 中国石油天然气集团公司 | Oil and gas pipeline SCADA (supervisory control and data acquisition) system data communication on-off real-time monitoring method |
| CN114651426A (en) * | 2019-11-20 | 2022-06-21 | 三菱电机株式会社 | Optical communication device and communication system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597979A (en) * | 2016-12-08 | 2017-04-26 | 中国石油天然气集团公司 | Oil and gas pipeline SCADA (supervisory control and data acquisition) system data communication on-off real-time monitoring method |
| CN114651426A (en) * | 2019-11-20 | 2022-06-21 | 三菱电机株式会社 | Optical communication device and communication system |
| CN114651426B (en) * | 2019-11-20 | 2023-08-18 | 三菱电机株式会社 | Optical communication device and communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013088470A1 (en) | 2013-06-20 |
| TW201325108A (en) | 2013-06-16 |
| JP5661199B2 (en) | 2015-01-28 |
| JPWO2013088470A1 (en) | 2015-04-27 |
| TWI442719B (en) | 2014-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101674499B (en) | Passive optical network system and fault determination method thereof | |
| US8249452B2 (en) | ONT-based micronode management | |
| JP4442635B2 (en) | Failure notification method in PON system | |
| EP2418805A1 (en) | Optical subscriber terminal device, pon system, and abnormality detection method | |
| US20120288273A1 (en) | Intelligent splitter monitor | |
| CN102415056A (en) | Pon system, station-end apparatus and subscriber-end apparatus | |
| CN109218857B (en) | Method and system for detecting port state of network equipment | |
| CN213934618U (en) | Multi-protocol data center machine room environment monitoring system | |
| JP4129028B2 (en) | Optical transmission system and optical repeater | |
| KR20010110794A (en) | A status monitoring and data processing system suitable for use in a bi-directional communication device | |
| US20050008372A1 (en) | Optical line terminal and method that store the identity numbers of a number of optical network terminals that are associated with a single network end point | |
| JPH11196068A (en) | Wavelength division multiplex transmitting device | |
| KR20150003602A (en) | Apparatus and method for optical cable status supervision | |
| US11349563B2 (en) | Communication monitor method and communication monitor device | |
| JP5661199B2 (en) | Communication failure detection device | |
| CN103988469B (en) | Communication failure detection device | |
| EP2525529A2 (en) | Transponder, repeater, and terminal equipment | |
| JP2009027518A (en) | Communication failure detection system and its method | |
| US20230318704A1 (en) | Optical communication system, monitoring device, and monitoring method | |
| CN104065498A (en) | Channel establishment method and device | |
| KR101453974B1 (en) | System and Method for Determining Optical Fiber Failure Section | |
| RU2207631C2 (en) | Set of equipment for automatic tepephone exchange for safety-fire alarm system | |
| JP2012151737A (en) | Station side optical network terminal device, optical communication system, abnormality detection method, and device program | |
| Ab-Rahman et al. | Design of FTTH monitoring system based on zigbee wireless sensor network | |
| JP2003332991A (en) | Master station and slave station, communication system, communication method, communication program, and computer-readable recording medium having communication program recorded therein |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20171213 |