CN101527598A - Transmission method based on optical transmission equipment failure or power failure - Google Patents
Transmission method based on optical transmission equipment failure or power failure Download PDFInfo
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- CN101527598A CN101527598A CN200910058647A CN200910058647A CN101527598A CN 101527598 A CN101527598 A CN 101527598A CN 200910058647 A CN200910058647 A CN 200910058647A CN 200910058647 A CN200910058647 A CN 200910058647A CN 101527598 A CN101527598 A CN 101527598A
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Abstract
The invention discloses a transmission method based on optical transmission equipment failure or power failure, which is characterized by including the steps: link circuit upstream equipment send out an upstream signal which is divided into two signals by an upstream optical splitter, wherein, one of the two signals is transmitted into an upstream input end of the optical transmission equipment, and the other signal is transmitted into an input end of a downstream optical switch; a downstream signal sent out by link circuit downstream equipment is divided into two signals by a downstream optical splitter, one of the two signals is transmitted into a downstream input end of the optical transmission equipment, and the other signal is transmitted into an input end of an upstream optical switch. The invention not only can automatically switch to protection state when a certain node in an optical transmission network has failure or power failure to ensure the network to be communicated, but also can ensure the stability of the optical transmission network.
Description
Technical field
The present invention relates to a kind of method for transmitting signals, specifically be meant a kind of transmission method based on optical transmission device fault or when outage.
Background technology
Along with development of Communication Technique, widely-used in actual life based on the communication mode of optical transmission device.Because the topological structure of communication network adopts chain structure or loop configuration mostly at present, so its fault-resistant is all poor with anti-outage performance.Especially when communication network adopts chain structure,, will cause whole link communication failure as long as the optical transmission device of one of them node breaks down or cuts off the power supply; When adopting loop configuration,, equally also can cause the inefficacy of whole loop as long as the optical transmission device of non-conterminous node breaks down or cuts off the power supply.When optical transmission device breaks down or during the situation of cutting off the power supply, usually all be immediately this fault point to be rushed to repair,, do not have alternate channel because these network links have only a main channel by the technical staff, can cause the communication disruption of whole link when therefore just rushing to repair, be unfavorable for the transmission constantly of signal.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art; a kind of transmission method based on optical transmission device fault or when outage is provided; this method automatically switches to the connection that guard mode guarantees network in the time of can not only certain node breaks down in optical transport network, and can also guarantee the stability of optical transport network.
Purpose of the present invention is achieved through the following technical solutions: a kind of transmission method based on optical transmission device fault or when outage may further comprise the steps:
(1) stream signal sent of link upstream equipment is separated into two paths of signals through the upstream optical splitter, one tunnel upstream input that is sent to optical transmission device wherein, and another road is sent to the input of downstream optical switch;
(2) downstream signal that sends of link upstream device is separated into two paths of signals through the downstream optical splitter, one tunnel downstream input that is sent to optical transmission device wherein, and another road is sent to the input of upstream optical switch;
(3) microprocessor controlled apparatus is after receiving optical transmission device information and detecting the input power supply, and judges whether this optical transmission device breaks down or outage occurs;
(4) do not break down and when cutting off the power supply, just enter normal operating conditions, otherwise just enter the protection operating state;
(5) microprocessor controlled apparatus receives optical transmission device information once more and detects the input power supply, and judges whether the fault of this optical transmission device and outage recover;
(6),, otherwise just return step (5) just from protecting operating state to enter normal operating conditions when this fault and outage when having recovered.
Further, normal operating conditions described in above-mentioned steps (4) and the step (6) is meant: the signal of upstream optical splitter output is exported from the downstream output of optical transmission device from the input input back, upstream of optical transmission device, and is transferred to the input of link upstream device behind the optical switch of downstream; The signal of downstream optical splitter output is exported from the upstream output of optical transmission device from the input input back, downstream of optical transmission device, and is transferred to the input of link upstream equipment behind the optical switch of upstream.
Protection operating state described in above-mentioned steps (4) and the step (6) is meant: the upstream optical switch disconnects the upstream output of optical transmission device and being connected of this upstream optical switch, and being connected of conducting downstream optical splitter and this upstream optical switch; The downstream optical switch disconnects the downstream output of optical transmission device and being connected of this downstream optical switch, and being connected of conducting upstream optical splitter and this downstream optical switch.
Simultaneously, the two paths of signals that is separated into through the upstream optical splitter in the above-mentioned steps (1) is identical; The two paths of signals that is separated into through the downstream optical splitter in the described step (2) is identical.
Judging whether this optical transmission device breaks down and also specifically may further comprise the steps with cutting off the power supply in the above-mentioned steps (3):
(1) microprocessor controlled apparatus is compared the judgement of also cutting off the power supply simultaneously to this information and the fault message that is stored in the microprocessor controlled apparatus in advance after receiving optical transmission device information and detecting the input power supply;
(2) if the information that receives is consistent with fault message or import power cut-off, then microprocessor controlled apparatus is just controlled the upstream optical switch and the downstream optical switch switches, thereby enters the protection operating state;
(3) if the information that receives with fault message is inconsistent and it is normal to import power supply, then microprocessor controlled apparatus is just controlled the upstream optical switch and the downstream optical switch switches, thus the normal operating conditions of entering.
In order better to realize the present invention, described microprocessor controlled apparatus is an ARM7 embedded microprocessor that has communication interface.And this communication interface is serial ports or Ethernet interface.Described upstream optical splitter and downstream optical splitter all adopt 1 * 2 light path device, and its splitting ratio is 1: 4; Described upstream optical switch and downstream optical switch then all adopt 1 * 2 road optical switch based on MOEMS (Micro optic electro mechanicalsystems, Micro-Opto-Electro-Mechanical Systems) technology.
The present invention compared with prior art has following advantage and beneficial effect:
(1) optical transmission device of certain node that the present invention can be in optical transport network occurs sending, receive under the situation of fault or outage and automatically switches to guard mode; guaranteeing the unobstructed of overall optical transmission network, thereby overcome prior art needs interrupt network when optical transmission device breaks down or cut off the power supply defective.
(2) owing to be that the two paths of signals separated from upstream optical splitter and downstream optical splitter is identical, therefore can not change the signal transmission feature of this optical transmission device before and after breaking down.
(3) the present invention is not only simple in structure, and it is convenient to implement, but also can increase the reliability of optical transport network, the communication service loss that minimizing is bigger because of local certain point failure causes.
Description of drawings
Fig. 1 is the present invention's theory structure schematic diagram in normal operation;
Fig. 2 is the theory structure schematic diagram of the present invention under the protection operating state;
Fig. 3 is a whole theory structure schematic diagram of the present invention;
Fig. 4 is a workflow diagram schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, 2, the present invention has increased a protection equipment at existing optical transmission device place, when fault such as transmission, reception or outage not occurring when optical transmission device, system then enters normal operating conditions, and promptly the link upstream equipment is connected with the link upstream device through optical transmission device; Fault such as transmissions, reception appears when optical transmission device or when cutting off the power supply; protection equipment then starts; system enters the protection operating state; being about to the link upstream equipment is connected with the link upstream device by protection equipment; thereby cut-out is connected with optical transmission device, so that the technical staff overhauls optical transmission device.
Shown in Fig. 3,4, protection equipment of the present invention mainly is made up of upstream optical splitter, upstream optical switch, downstream optical splitter, downstream optical switch and microprocessor controlled apparatus.The output of link upstream equipment links to each other with the input of upstream optical splitter, an output of upstream optical splitter is connected with the upstream input of optical transmission device, and another output of upstream optical splitter then directly links to each other with an input of downstream optical switch.Equally, the output of link upstream device also links to each other with the input of downstream optical splitter, and an output of downstream optical splitter links to each other with the downstream input of optical transmission device, and another output of downstream optical splitter then links to each other with an input of upstream optical switch.Simultaneously, the upstream output of optical transmission device also directly is connected with another input of upstream optical switch, and the output of upstream optical switch then links to each other with the input of link upstream equipment; The downstream output of optical transmission device links to each other with another input of downstream optical switch, and the output of downstream optical switch then links to each other with the input of link upstream device.
In addition, on microprocessor controlled apparatus, also be provided with communication interface, as serial ports or Ethernet interface.This microprocessor controlled apparatus is connected with the optical transmission device local communication interface by this communication interface; Simultaneously, this microprocessor controlled apparatus also is connected with the downstream optical switch with the upstream optical switch respectively by the I/O output.In order to ensure normal switching and normal use of optical transmission device with protection equipment, optical transmission device is must same power interface with protection power devices power supply.
Upstream optical splitter and downstream optical splitter adopt two identical 1 * 2 optical branching device, and its best splitting ratio is 1: 4, simultaneously, also can require to adjust according to reality.In order to reach effect preferably, the insertion loss and the supplementary load loss of this optical branching device are the smaller the better, and its isolation will reach more than the 40dB, otherwise will influence the performance of whole system.Simultaneously, also very high to the stability requirement of optical branching device, in addition, uniformity, return loss, directivity all occupy very important position in the performance index of optical branching device.
Upstream optical switch and downstream optical switch are all selected the optical switch based on two 1X2 roads of MOEMS technology.The faster the better to require the exchange velocity of this optical switch, generally requires to reach a few tens of milliseconds level; The insertion loss is the smaller the better, and general requirement can reach 1～2db; Simultaneously, require the optical switch requirement to have good stable and reliability, it is normal generally to require Danone to cut-off to up to ten thousand times; Also have crosstalking between the optical switch, isolation, extinction ratio several factors can influence the performance of optical switch.
It is the ARM7 embedded microprocessor of W90N745 that microprocessor controlled apparatus is selected a model of Hua Bang company, and this chip has that fast operation, input and output and communication interface are abundant, peripheral interface is simple, instruction is abundant and characteristics such as power consumption is little.
Workflow of the present invention is: the stream signal of sending from the output of link upstream equipment is behind the optical splitter of upstream, form the identical stream signal of two-way, wherein swim signal on the way and directly be sent to the upstream input of optical transmission device, another road signal then is sent to an input of downstream optical switch; The downstream signal that sends from the output of link upstream device is behind the optical splitter of downstream, form the identical downstream signal of two-way, wherein one road downstream signal directly is sent to the downstream input of optical transmission device, and another road signal then is sent to an input of upstream optical switch.Simultaneously, be input to another input of upstream optical switch through the upstream of optical transmission device output from the downstream signal of optical transmission device downstream input input; Then be input to another input of downstream optical switch through the downstream of optical transmission device output from the stream signal of optical transmission device upstream input input.
After above-mentioned previous work is ready its workflow just as shown in Figure 4, its concrete steps are:
(1) by the various information of microprocessor controlled apparatus, receives as information such as running state data, alarm datas to optical transmission device.
(2) by microprocessor controlled apparatus the information that is received is discerned, and optical transmission device is sent or receive whether to break down by this recognition result and judge.Be after microprocessor controlled apparatus receives optical transmission device information, the fault message that storage in advance is good in information that receives and the microprocessor controlled apparatus is compared,, illustrate that then fault has appearred in optical transmission device if the information that receives is consistent with fault message; If the information and the fault message that receive are inconsistent, illustrate that then optical transmission device does not break down.
(3) if sending or receiving fault appears in this light transmitting device, then upstream optical switch and downstream optical switch are controlled, made it switch to the protection operating state from normal operating conditions by microprocessor controlled apparatus; Otherwise return step (1).
(4) microprocessor controlled apparatus receives the various information of optical transmission device again, as information such as running state data, alarm datas.
(5) by microprocessor controlled apparatus whether the transmission or the reception fault of optical transmission device have been recovered to judge.
(6) if fault is recovered, then microprocessor controlled apparatus is controlled upstream optical switch and downstream optical switch, makes it switch to normal operating conditions from the protection operating state, and returns step (1); Otherwise just return step (4).
When execution in step (1) time, also the input power supply of optical transmission device is judged by microprocessor controlled apparatus, its concrete steps are as follows: at first obtain to import power data by microprocessor controlled apparatus by the interface of wherein sampling, judge thus whether the input power supply cuts off the power supply; If after confirming the input power cut-off, microprocessor controlled apparatus is then controlled upstream optical switch and the action of downstream optical switch, makes system be in the protection operating state, otherwise just controls upstream optical switch and the action of downstream optical switch, makes it be in normal operating conditions; Microprocessor controlled apparatus reaffirms whether the input power supply recovers, if recover then control upstream optical switch and the action of downstream optical switch, makes system be in normal operating conditions.
Wherein, described normal operating conditions is meant: the internal switch of downstream optical switch is with 1, No. 2 terminal conductings, export through the downstream of optical transmission device output thereby make from the stream signal of optical transmission device upstream input input, input from the link upstream device is imported behind the optical switch of downstream again, thereby the stream signal that the link upstream equipment is sent is sent to the link upstream device by optical transmission device; Simultaneously, the internal switch of upstream optical switch is with 1, No. 2 terminal conductings, export through the upstream of optical transmission device output thereby make from the downstream signal of optical transmission device downstream input input, input from the link upstream equipment is imported behind the optical switch of upstream again, thereby the downstream signal that the link upstream device is sent is sent in the link upstream equipment by optical transmission device.
Described protection operating state is meant: the internal switch of downstream optical switch is with 1, No. 3 terminal conductings, thereby the stream signal that the upstream optical splitter is exported directly is input to the input of link upstream device through the downstream optical switch; Simultaneously, the internal switch of upstream optical switch is with 1, No. 3 terminal conductings, thereby the downstream signal that the downstream optical splitter is exported directly is input to the input of link upstream equipment through the upstream optical switch.Thereby,, the optical transmission device that breaks down is disconnected fully, so that the technical staff overhauls by this protection operating state.
Owing to enter after the protection operating state; be that the downstream signal that sends of the stream signal sent of link upstream equipment or link upstream device is all without optical transmission device; but, therefore can not influence the proper communication between the upstream and downstream optical transmission device directly through overprotection equipment.
On the annexation of protection equipment and optical transmission device; if transmission network is single stranded form (having the optical transmission device more than 2 or 2 at least); except terminal (decentre machine room switching network place farthest) optical transmission device does not need protection the equipment; all the other all need a protection equipment to be attached thereto, and so just can reach the reliability of the data transmission of whole link.If transmission network is annular form (having 3 or above optical transmission device at least), all need a protection equipment to be attached thereto at each optical transmission device, only in this way just can reach the reliability of the data transmission of whole loop network.
As mentioned above, just can realize the present invention preferably.
Claims (10)
1, a kind of transmission method based on optical transmission device fault or when outage is characterized in that, may further comprise the steps:
(1) stream signal sent of link upstream equipment is separated into two paths of signals through the upstream optical splitter, one tunnel upstream input that is sent to optical transmission device wherein, and another road is sent to the input of downstream optical switch;
(2) downstream signal that sends of link upstream device is separated into two paths of signals through the downstream optical splitter, one tunnel downstream input that is sent to optical transmission device wherein, and another road is sent to the input of upstream optical switch;
(3) microprocessor controlled apparatus is after receiving optical transmission device information and detecting the input power supply, judges whether this optical transmission device breaks down or outage occurs;
(4) do not break down and when cutting off the power supply, just enter normal operating conditions, otherwise just enter the protection operating state;
(5) microprocessor controlled apparatus receives optical transmission device information once more and detects the input power supply, and judges whether the fault of this optical transmission device and outage recover;
(6),, otherwise just return step (5) just from protecting operating state to enter normal operating conditions when this fault and outage when having recovered.
2, a kind of transmission method according to claim 1 based on optical transmission device fault or when outage, it is characterized in that, normal operating conditions described in step (4) and the step (6) is meant: the signal of upstream optical splitter output is exported from the downstream output of optical transmission device from the input input back, upstream of optical transmission device, and is transferred to the input of link upstream device behind the optical switch of downstream; The signal of downstream optical splitter output is exported from the upstream output of optical transmission device from the input input back, downstream of optical transmission device, and is transferred to the input of link upstream equipment behind the optical switch of upstream.
3, a kind of transmission method according to claim 1 based on optical transmission device fault or when outage, it is characterized in that, protection operating state described in step (4) and the step (6) is meant: the upstream optical switch disconnects the upstream output of optical transmission device and being connected of this upstream optical switch, and being connected of conducting downstream optical splitter and this upstream optical switch; The downstream optical switch disconnects the downstream output of optical transmission device and being connected of this downstream optical switch, and being connected of conducting upstream optical splitter and this downstream optical switch.
4, a kind of transmission method based on optical transmission device fault or when outage according to claim 1 is characterized in that the two paths of signals that is separated into through the upstream optical splitter in the described step (1) is identical; The two paths of signals that is separated into through the downstream optical splitter in the described step (2) is identical.
5, a kind of transmission method based on optical transmission device fault or when outage according to claim 1 is characterized in that, whether this optical transmission device of judging in the described step (3) breaks down or occur cutting off the power supply further comprising the steps of:
(1) microprocessor controlled apparatus is compared this information and the fault message that is stored in the microprocessor controlled apparatus in advance after receiving optical transmission device information and detecting the input power supply, and the judgement of cutting off the power supply simultaneously;
(2) if the information that receives is consistent with fault message or import power cut-off, then microprocessor controlled apparatus is just controlled the upstream optical switch and the downstream optical switch switches, thereby enters the protection operating state;
(3) if the information that receives with fault message is inconsistent and it is normal to import power supply, then microprocessor controlled apparatus is just controlled the upstream optical switch and the downstream optical switch switches, thus the normal operating conditions of entering.
6, according to each described a kind of transmission method of claim 1～5, it is characterized in that described microprocessor controlled apparatus is an ARM7 embedded microprocessor that has communication interface based on optical transmission device fault or when outage.
7, a kind of transmission method based on optical transmission device fault or when outage according to claim 6 is characterized in that described communication interface is serial ports or Ethernet interface.
8, according to each described a kind of transmission method of claim 1～5, it is characterized in that described upstream optical splitter and downstream optical splitter all adopt 1 * 2 light path device based on optical transmission device fault or when outage.
9, according to each described a kind of transmission method of claim 1～5, it is characterized in that described upstream optical switch and downstream optical switch all adopt 1 * 2 road optical switch based on the MOEMS technology based on optical transmission device fault or when outage.
10, a kind of transmission method based on optical transmission device fault or when outage according to claim 8 is characterized in that the splitting ratio of described upstream optical splitter and downstream optical splitter is 1: 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910058647A CN101527598A (en) | 2009-03-19 | 2009-03-19 | Transmission method based on optical transmission equipment failure or power failure |
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| CN200910058647A CN101527598A (en) | 2009-03-19 | 2009-03-19 | Transmission method based on optical transmission equipment failure or power failure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102369666A (en) * | 2011-08-30 | 2012-03-07 | 华为技术有限公司 | Device by which bistable light switch realizes monostable function |
| CN103873137A (en) * | 2012-12-11 | 2014-06-18 | 中国移动通信集团山东有限公司 | Ring optical transmission network route switching method and device |
| CN104426115A (en) * | 2013-09-10 | 2015-03-18 | 西门子公司 | Method for checking communication link between two switches of switch mechanism and corresponding checking device |
| CN108600873A (en) * | 2018-04-25 | 2018-09-28 | 深圳市三旺通信技术有限公司 | A kind of method that controllable optical port realizes redundant link defencive function |
-
2009
- 2009-03-19 CN CN200910058647A patent/CN101527598A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102369666A (en) * | 2011-08-30 | 2012-03-07 | 华为技术有限公司 | Device by which bistable light switch realizes monostable function |
| WO2012106952A1 (en) * | 2011-08-30 | 2012-08-16 | 华为技术有限公司 | Apparatus for bistable optical switch to achieve monostable-function |
| CN102369666B (en) * | 2011-08-30 | 2013-03-20 | 华为技术有限公司 | Device by which bistable light switch realizes monostable function |
| CN103873137A (en) * | 2012-12-11 | 2014-06-18 | 中国移动通信集团山东有限公司 | Ring optical transmission network route switching method and device |
| CN103873137B (en) * | 2012-12-11 | 2017-05-03 | 中国移动通信集团山东有限公司 | Ring optical transmission network route switching method and device |
| CN104426115A (en) * | 2013-09-10 | 2015-03-18 | 西门子公司 | Method for checking communication link between two switches of switch mechanism and corresponding checking device |
| CN104426115B (en) * | 2013-09-10 | 2017-12-22 | 西门子公司 | Check the method for the communication link of two switch rooms of switching mechanism and corresponding check device |
| CN108600873A (en) * | 2018-04-25 | 2018-09-28 | 深圳市三旺通信技术有限公司 | A kind of method that controllable optical port realizes redundant link defencive function |
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Application publication date: 20090909 |