CN101345597B - Method and apparatus for implementing automatic laser cut-out of synchronization digital system equipment - Google Patents
Method and apparatus for implementing automatic laser cut-out of synchronization digital system equipment Download PDFInfo
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- CN101345597B CN101345597B CN2008101346459A CN200810134645A CN101345597B CN 101345597 B CN101345597 B CN 101345597B CN 2008101346459 A CN2008101346459 A CN 2008101346459A CN 200810134645 A CN200810134645 A CN 200810134645A CN 101345597 B CN101345597 B CN 101345597B
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Abstract
The invention discloses an automatic laser shutoff accomplishing method and device for synchronous digital system device, which is used for automatic laser shutoff for network element of ring network. The method comprises step S102, initial state of each network element of ring network are all set at normal, and each network element separately transmits to its opposite of first indication information for indicating normal optical link; step S104, each network element detects real time its received optical link state; step S106, each network element determines indication information transmitting to its opposite network element according to detected receiving optical link state and/ or received indication information from upstream network element, closes or opens laser according to received indication information and/ or transmitted indication information. The invention completes automatic laser shutoff function.
Description
Technical field
The present invention relates to the communications field, in particular to implementation method and the device of the ALS (Automatic LaserShutdown, automatic laser cut-out) of a kind of SDH (SynchronousDigital Hierarchy, SDH) equipment.
Background technology
At present; Because the professional disruption of the looped network that causes of ALS function, provide a kind of light of SDH optical transfer network to automatically shut down the implementation method of function in order to solve, it takes the measure of direct closing fault light mouth; Make when under the situation of SDH annular networking, realizing the light safety function; Can not have influence on the service protection function of system and network element, also can not have influence on the service communication on the normal ring direction, this method comprises the steps:
Step 1 in the software systems of the network element of SDH optical transport network, utilizes Synchronization Status Message S1 byte definition light to automatically shut down instruction;
Step 2, the warning information of detection network element light mouth;
Step 3, network element light mouth are sent light to the corresponding network element light mouth that is connected and are automatically shut down instruction according to above-mentioned warning information;
Step 4, the light that corresponding network element light mouth inspection receives automatically shuts down instruction;
Step 5, corresponding network element light mouth automatically shut down instruction according to light and carry out the operation of corresponding light mouth.
Fig. 1 is the sketch map according to the implementation method of the ALS of the SDH equipment of correlation technique; As shown in Figure 1; When the light mouth R2 121 of network element B 120 detected LOS (LossOf Signal, dropout) alarm at a place, light mouth T2 sent to the light mouth R1 111 of corresponding network element A 110 through path b and automatically shuts down instruction; Light mouth R1 111 receptions are above-mentioned to automatically shut down instruction and notifies light mouth T1 112 through path c, and according to the above-mentioned laser that automatically shuts down instruction black out mouth T1 112 in pass, d place.But; If after this, light mouth R1 111 detects the LOS alarm again, according to the method described above; Need send light to the corresponding network element B that is connected 120 light mouth R2 121 through step 3 and automatically shut down instruction; But because light mouth T1112 interrupts to the connection of light mouth R2 121, so light mouth R2 121 can't receive this light and automatically shut down instruction, causes finally can't closing the laser of the transmission light mouth T2 122 of black out mouth R1 111 correspondences.
Can find out that from said process said method only is applicable to the situation of two fine faults of continuous network element single directional light.That is to say, when a direction optical fiber breaks off, adopt said method to close by the transmission laser that optical fiber is corresponding; But when reciprocal optical fiber also breaks off; Adopt said method but can't close the corresponding transmission laser of optical fiber of back disconnection, therefore under the situation of twocouese fiber failure, can't realize the processing of automatically closing laser; And then can't avoid the harm of laser, and can't realize perfect ALS function to human eye.
Summary of the invention
To the problem of the processing that under the situation of twocouese fiber failure, can't realize automatically closing laser in the prior art and propose the present invention, for this reason, the present invention aims to provide implementation method and the device of a kind of ALS of SDH equipment, to address the above problem.
A kind of implementation method of automatic laser cut-out of synchronization digital system equipment is provided according to an aspect of the present invention.
The network element that is used for looped network according to the implementation method of automatic laser cut-out of synchronization digital system equipment of the present invention carries out automatic laser cut-out; Said method comprises: step S102; The initial condition of each network element in the looped network all is set to normally, and each network element is used to indicate normal first indication information of optical link to its opposite end network element transmission respectively; Step S104, each network element detect its state that receives optical link in real time; Step S106; The indication information that each network element sends to its opposite end network element according to the state of the reception optical link of its detection and/or its indication information decision from its upstream network element that receives; And, close or open laser according to the indication information of indication information that receives and/or transmission.
Preferably, above-mentioned indication information specifically comprises: first indication information, second indication information that is used to indicate optical link unusual, be used to indicate the 3rd indication information of closing laser.
Preferably, step S106 specifically comprises: if network element receives second indication information from an opposite end network element, and network element elder generation another opposite end network element of forward direction sent the 3rd indication information, and then network element is closed to the laser of another opposite end network element.
Preferably, step S106 specifically comprises: if network element detects the state that receives optical link is that optical link is unusual, and then network element sends the 3rd indication information to its upstream network element, sends second indication information to its downstream network element.
Preferably, step S106 specifically comprises: if network element detects the state that receives optical link is that optical link recovers normally, and then network element sends first indication information to its downstream network element; If the upstream network element of network element receives first indication information from its upstream network element, then the upstream network element of network element is opened to the laser of network element.
Preferably; Step S106 specifically comprises: when one of following situation; Network element sends first indication information to its downstream network element, and is opened to the laser of its upstream network element: if network element receives first indication information, and the reception optical link that is connected with downstream network element is normal; If network element receives first indication information, and the indication information that downstream network element is sent is first indication information; If network element receives first indication information, and the indication information that downstream network element is sent is second indication information.
Preferably, step S106 specifically comprises: if network element receives second indication information from an opposite end network element, and network element elder generation another opposite end network element of forward direction sent first indication information, and then network element sends second indication information to another opposite end network element.
Preferably, step S106 specifically comprises: if network element receives the 3rd indication information from the opposite end network element, then network element sends first indication information to its downstream network element, and is closed to the laser of opposite end network element.
Preferably, said method further comprises: utilize idle bit to carry indication information, wherein, idle bit comprises: the idle bit of the reservation bit of Synchronization Status Message S1 byte, section free consumption byte, overhead byte.
A kind of implement device of automatic laser cut-out of synchronization digital system equipment is provided according to another aspect of the present invention.
Implement device according to automatic laser cut-out of synchronization digital system equipment of the present invention comprises: initialization module, and the initial condition that is used for network element is set to normally; Detection module is used for detecting in real time the state that network element receives optical link; Sending module is used for sending indication information to the opposite end of network element network element; Receiver module is used to receive the indication information from the opposite end network element transmission of network element; Decision-making module, the indication information that the state of the reception optical link that is used for detecting according to detection module or the indication information decision sending module from opposite end, upper reaches network element that receiver module receives send to the opposite end network element; The laser control module is used for closing or open laser according to the indication information that receives and/or the indication information of transmission.
Preferably; The laser control module is used for receiving second indication information of indicating optical link unusual of being used to from an opposite end network element at receiver module; And sending module elder generation another opposite end network element of forward direction has sent under the situation that is used to indicate the 3rd indication information of closing laser, is closed to the laser of another opposite end network element.
Preferably, sending module is used for after the operation of initialization module, being used to indicate normal first indication information of optical link to the transmission of opposite end network element.
Through the present invention; Adopt to make progress/downstream network element is (promptly; The opposite end network element) method of the multiple indication information of transmission makes each network element can not interrupt influencing the business of another one direction on the looped network owing to the one-way optical fiber connection to the status indication information of all directions transmission network element in looped network; Solved the problem that under the situation of twocouese fiber failure, can't realize the processing of automatically closing laser in the prior art, the perfect function of Automatic laser shutdown.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the implementation method of the ALS of the SDH equipment of prior art;
Fig. 2 is the structured flowchart according to the implement device of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 3 is the flow chart according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 4 is first sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 5 is second sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 6 is the 3rd sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 7 is the 4th sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 8 is the 5th sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention;
Fig. 9 is the 6th sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention.
Embodiment
Functional overview
In order to solve the problem that under the situation of twocouese fiber failure, can't realize the processing of automatically closing laser in the prior art; The invention provides implementation method and the device of a kind of ALS of SDH equipment; The network element that is applied in the looped network carries out automatic laser cut-out; Adopt upwards/downstream network element sends the method for multiple indication information; Make each network element can be in looped network transmit the status indication information of network element, receive the indication information of indicating optical link unusual of being used to, and this network element elder generation another opposite end network element of forward direction sends and is used to indicate under the situation of the indication information of closing laser from an opposite end network element at certain network element to all directions; This network element is closed to the laser of another opposite end network element; Can under the situation of twocouese fiber failure, realize the processing of automatically closing laser, and then can avoid on looped network, occurring one-way optical fiber connects influences another one direction on the looped network when interrupting business, the perfect function of ALS.
Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Device embodiment
According to embodiments of the invention, the implement device of a kind of ALS of SDH equipment is provided.Fig. 2 is the structured flowchart according to the implement device of the ALS of the SDH equipment of the embodiment of the invention; As shown in Figure 2; This device comprises: initialization module 200, detection module 202, receiver module 204, decision-making module 206, sending module 208, laser control module 210 are described in detail said structure below in conjunction with accompanying drawing.
Detection module 202 is connected to initialization module 200, is used for detecting in real time the state that network element receives optical link;
Receiver module 204 is used to receive the indication information from the opposite end network element transmission of network element;
Decision-making module 206; Be connected to detection module 202 and receiver module 204; The indication information that the state of the reception optical link that is used for detecting according to detection module 202 or the indication information decision sending module 208 from opposite end, upper reaches network element that receiver module 204 receives send to the opposite end network element; Wherein, indication information comprises: first indication information, second indication information that is used to indicate optical link unusual, be used to indicate the 3rd indication information of closing laser;
Particularly, the operation of decision-making module 206 specifically comprises following several kinds of situation:
(1) if it is that optical link is unusual that detection module 202 detects the state that receives optical link, then decision-making module 206 decisions are sent the 3rd indication information to the upstream network element of network element, send second indication information to the downstream network element of network element.
(2) be that optical link recovers normally if detection module 202 detects the state that receives optical link; Then decision-making module 206 decisions are sent first indication information to the downstream network element of network element, after this, if the upstream network element of network element receives first indication information from its upstream network element; The upstream network element of then notifying laser control module 210 to open this network element arrives the laser of this network element; That is, when the upstream network element of network element when the laser of network element is closed condition, this laser is opened; When the upstream network element of network element when the laser of network element is open mode, keep the open mode of this laser.
(3) if receiver module 204 receives first indication information; And other direction receives optical link (promptly; The reception optical link that is connected with downstream network element) indication information that sends of normal or downstream network element be not the 3rd indication information (promptly; The indication information that sends is first indication information or second indication information), then decision-making module 206 decisions are sent first indication information to the downstream network element of network element.
(4) if receiver module 204 receives second indication information from an opposite end network element, and another opposite end network element of sending module 208 first forward directions sent first indication information, and then decision-making module 206 decisions are sent second indication information to another opposite end network element.
(5) if receiver module 204 receives the 3rd indication information from the opposite end network element, then decision-making module 206 decisions are sent first indication information to the downstream network element of network element.
Laser control module 210 is connected to receiver module 204 and sending module 208, is used to control laser, comprises closing laser and opening laser.
Particularly, the operation of laser control module 210 specifically comprises following several kinds of situation:
(1) if receiver module 204 receives second indication information from an opposite end network element, and another opposite end network element of sending module 208 first forward directions sent the 3rd indication information, and then laser control module 210 is closed to the laser of another opposite end network element.
(2) if receiver module 204 receives first indication information, then laser control module 210 is opened to the laser of the upstream network element of network element.
(3) if receiver module 204 receives the 3rd indication information from the opposite end network element, then laser control module 210 is closed to the laser of opposite end network element.
Through this embodiment, adopt upwards/downstream network element sends the method for multiple indication information, solved the problem that under the situation of twocouese fiber failure, can't realize the processing of automatically closing laser in the prior art the perfect function of Automatic laser shutdown.
Method embodiment
According to embodiments of the invention, the implementation method of a kind of ALS of SDH equipment is provided.In the method, be provided with at first as follows:
(1) in the network element software system of SDH equipment; Utilize idle bit that the protocol bits of ALS is set; Wherein, idle bit can include but not limited to one of following: the idle bit of the reservation bit of Synchronization Status Message S1 byte, section free consumption byte, overhead byte.
(2) indication information that above-mentioned protocol bits is carried is set in advance; Be used to indicate the state of network element; Wherein, The state of network element comprises: normal, optical link unusual, laser is closed in request, can be provided with as follows indication information according to the state of network element: first indication information is used to indicate optical link normal, and second indication information is used to indicate that optical link is unusual, the 3rd indication information is used for indication and closes laser.
Operation for above-mentioned setting (1) and setting (2) can be in no particular order in proper order.
Fig. 3 is the flow chart according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention, and the network element that this method is used for looped network carries out automatic laser cut-out, and is as shown in Figure 3, and this method comprises:
Step S302; Each network element in the looped network (is comprised four ports; Promptly; Comprise two transmit ports and two receiving ports) initial condition all be set to normally, and each network element sends to its opposite end network element (each network element has two opposite end network elements, and each opposite end network element is respectively to a transmit port and a receiving port that should network element) respectively and is used to indicate normal first indication information of optical link;
Step S304, each network element detect its state that receives optical link in real time;
Step S306; Each network element according to the state of the reception optical link of its detection and/or its receive from its upstream network element (promptly; Detect the optical link state or receive the pairing opposite end of the receiving port network element of indication information) the indication information decision to the indication information of its opposite end network element (comprise above-mentioned upstream network element and downstream network element, wherein, downstream network element be another opposite end network element) transmission; And according to the indication information of indication information that receives and/or transmission; Close or open laser, wherein, indication information comprises: first indication information, second indication information that is used to indicate optical link unusual, be used to indicate the 3rd indication information of closing laser.
In step S306, specifically comprise following situation:
(600) if network element receives second indication information from an opposite end network element, and predetermined network element elder generation another opposite end network element of forward direction sent the 3rd indication information, and then the network element decision is closed to the laser of another opposite end network element.
(602) if it is optical link unusual (that is, light connects alarm and produces) that network element detects the state (that is, light connects alarm status) that receives optical link, then network element sends the 3rd indication information to its upstream network element, sends second indication information to its downstream network element.
(604) if it is that optical link recovers normal (that is, light connects alarm and disappears) that network element detects the state that receives optical link, then network element sends first indication information to its downstream network element; After this; If the upstream network element of network element receives first indication information from its upstream network element, then the upstream network element of network element is opened to the laser of network element, promptly; When the upstream network element of network element when the laser of network element is closed condition; This laser is opened, when the upstream network element of network element when the laser of network element is open mode, keep the open mode of this laser.
(606) if network element receives first indication information; And other direction receives optical link (promptly; The reception optical link that is connected with downstream network element) indication information that sends of normal or downstream network element be not the 3rd indication information (promptly; The indication information that sends is first indication information or second indication information), then network element sends first indication information to its downstream network element, and confirms to be opened to the laser of its upstream network element.
(608) if network element receives second indication information from an opposite end network element, and network element elder generation another opposite end network element of forward direction sent first indication information, and then network element sends second indication information to another opposite end network element.
(610) if network element receives the 3rd indication information from the opposite end network element, then network element sends first indication information to its downstream network element, and is closed to the laser of opposite end network element.
Through this embodiment, adopt upwards/downstream network element sends the method for multiple indication information, solved the problem that under the situation of twocouese fiber failure, can't realize the processing of automatically closing laser in the prior art the perfect function of Automatic laser shutdown.
Below in conjunction with instance implementation process of the present invention is described in detail.Ring with 6 network elements is an example, comprises both direction on the ring, and interior ring is that counterclockwise outer shroud is a clockwise direction.
The first step, it is protocol bits that S1 byte reservation BIT is set;
In second step, protocol bits content (that is above-mentioned indication information) is set comprises following several kinds: normal state (01) (promptly; Above-mentioned first indication information), looped network direction fault case (02) (promptly; Above-mentioned second indication information), close laser solicited status (03) (that is above-mentioned the 3rd indication information);
The 3rd step; Each network element detects its state that receives optical link in real time; And the indication information that sends to its opposite end network element according to indication information decision that state or its of the reception optical link of its detection receives from its upstream network element; That is, each network element carries out state processing according to the above-mentioned description to step S206 and step S208.
Be described in detail below in conjunction with the state processing process of accompanying drawing each network element.
Fig. 4 is first sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention, and is as shown in Figure 4, and system is in initial state at first, and network element all sends " 01 " sign indicating number to all directions, and it is normal to represent that each light connects.
Fig. 5 is second sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention, and is as shown in Figure 5, when network element E when the optical fiber of network element D direction breaks off; The interior ring direction of network element D detects the LOS alarm; Therefore network element D sends " 03 " sign indicating number to network element E, and request network element E closes the laser of this direction, and inwardly the downstream network element C of ring sends " 02 " sign indicating number simultaneously; Ring direction fault finally forms the agreement sign indicating number state on the looped network as shown in Figure 5 on the representative ring.
Fig. 6 is the 3rd sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention, and is as shown in Figure 6, and network element E closes the transmission laser of E to the D direction under the situation that receives " 03 " sign indicating number; Network element C inwardly encircles downstream sending direction network element B and continues to send this direction of looped network " 02 " sign indicating number under the situation that receives " 02 " sign indicating number, and the like, finally form the agreement sign indicating number state on the looped network as shown in Figure 6.
Fig. 7 is the 4th sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention, and as shown in Figure 7, network element D also breaks off to the optical fiber of network element E; The outer shroud direction of network element E detects the LOS alarm; Therefore send " 03 " sign indicating number to network element D, request network element D closes the laser of this direction, sends " 02 " sign indicating number to the downstream network element F of outer shroud simultaneously; Outer shroud direction fault on the representative ring finally forms the agreement sign indicating number state on the looped network as shown in Figure 7.After this, because network element E breaks off to the direction of network element D, so network element D can not receive " 03 " that the E network element sends yard, and at this moment, network element E does not close to the transmission laser of network element D direction.
Fig. 8 is the 5th sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention; As shown in Figure 8, network element F continues to send this direction of looped network " 02 " sign indicating number to outer shroud downstream sending direction network element A under the situation that receives " 02 " sign indicating number; And the like; Final network element D has received from " 02 " sign indicating number that network element C brings, according to description to step S208, if on this network element downstream the state that sends of sending direction be " 03 " (LOS that has detected opposite ring direction alarms); Then close the laser of this downstream sending direction; That is, close the transmission laser of network element D, finally form the agreement sign indicating number state on the looped network as shown in Figure 8 to network element E direction.
Fig. 9 is the 6th sketch map according to the implementation method of the ALS of the SDH equipment of the embodiment of the invention, and is as shown in Figure 9, and network element E connects recovery normally to the light of network element D direction; According to the description to step S206, network element D downstream network element C sends " 01 " sign indicating number, and the like; In the cycle that timer is provided with; Network element E receives " 01 " sign indicating number, opens laser then, and network element D detects network element E and opens laser; Send " 02 " sign indicating number to network element E, finally form the agreement sign indicating number state on the looped network as shown in Figure 9.
Through this embodiment; Only can guarantee that unidirectional light connects the laser of not closing another direction when breaking down on ring; Can not influence the business on the another one ring direction, connect under the situation of fault at twocouese light simultaneously, can realize the ALS function yet because of the ALS function.
Pass through the above embodiment of the present invention; A kind of more perfect automatic laser shutdown method has been proposed; Under adjacent network element twocouese fiber failure situation, also can automatically closing laser, and guaranteed under the situation that has normal one way traffic path on the looped network; Can not influence business, reach on the basis of realizing the ALS function fully and can guarantee the unimpeded of one way traffic because of the automatically closing laser function.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the implementation method of an automatic laser cut-out of synchronization digital system equipment, the network element that is used for looped network carries out automatic laser cut-out, it is characterized in that, and said method comprises:
Step S102 all is set to the initial condition of each network element in the looped network normally, and each network element sends to its opposite end network element respectively and is used to indicate normal first indication information of optical link;
Step S104, each network element detect its state that receives optical link in real time;
Step S106; The indication information that said each network element sends to its opposite end network element according to the state of the said reception optical link of its detection and/or its indication information decision from its upstream network element that receives; And, close or open laser according to the said indication information that receives and/or the indication information of transmission.
2. method according to claim 1 is characterized in that, said indication information specifically comprises:
Said first indication information, second indication information that is used to indicate optical link unusual, be used to indicate the 3rd indication information of closing laser.
3. method according to claim 2 is characterized in that, said step S106 specifically comprises:
If network element receives said second indication information from an opposite end network element, and said network element elder generation another opposite end network element of forward direction sent said the 3rd indication information, and then said network element is closed to the laser of said another opposite end network element.
4. method according to claim 2 is characterized in that, said step S106 specifically comprises:
If it is that optical link is unusual that network element detects the state of said reception optical link, then said network element sends said the 3rd indication information to its upstream network element, sends said second indication information to its downstream network element.
5. method according to claim 2 is characterized in that, said step S106 specifically comprises:
If it is that optical link recovers normally that network element detects the state of said reception optical link, then said network element sends said first indication information to its downstream network element;
If the upstream network element of said network element receives said first indication information from its upstream network element, then the upstream network element of said network element is opened to the laser of said network element.
6. method according to claim 2 is characterized in that, said step S106 specifically comprises: when one of following situation, said network element sends said first indication information to its downstream network element, and is opened to the laser of its upstream network element:
If network element receives said first indication information, and the reception optical link that is connected with downstream network element is normal;
If said network element receives said first indication information, and the said indication information that sends to said downstream network element is said first indication information;
If said network element receives said first indication information, and the said indication information that sends to said downstream network element is said second indication information.
7. method according to claim 2 is characterized in that, said step S106 specifically comprises:
If network element receives said second indication information from an opposite end network element, and said network element elder generation another opposite end network element of forward direction sent said first indication information, and then said network element sends said second indication information to said another opposite end network element.
8. method according to claim 2 is characterized in that, said step S106 specifically comprises:
If network element receives said the 3rd indication information from the opposite end network element, then said network element sends said first indication information to its downstream network element, and is closed to the laser of said opposite end network element.
9. method according to claim 1 is characterized in that, further comprises:
Utilize idle bit to carry said indication information, wherein, said idle bit comprises: the idle bit of the reservation bit of Synchronization Status Message S1 byte, section free consumption byte, overhead byte.
10. the implement device of an automatic laser cut-out of synchronization digital system equipment is characterized in that, comprising:
Initialization module, the initial condition that is used for network element is set to normally;
Detection module is used for detecting in real time the state that said network element receives optical link;
Sending module is used for sending indication information to the opposite end of said network element network element;
Receiver module is used to receive the indication information from the opposite end network element transmission of said network element;
Decision-making module, the state of the said reception optical link that is used for detecting according to said detection module or the indication information from opposite end, upper reaches network element that said receiver module receives determine the indication information that said sending module sends to the opposite end network element;
The laser control module is used for closing or open laser according to the said indication information that receives and/or the indication information of said transmission.
11. device according to claim 10; It is characterized in that; Said laser control module is used for receiving second indication information of indicating optical link unusual of being used to from an opposite end network element at said receiver module; And first another opposite end network element of forward direction of said sending module has sent under the situation that is used to indicate the 3rd indication information of closing laser, is closed to the laser of said another opposite end network element.
12. device according to claim 10 is characterized in that, said sending module is used for after the operation of said initialization module, being used to indicate normal first indication information of optical link to the transmission of opposite end network element.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6194707B1 (en) * | 1998-01-16 | 2001-02-27 | Samsung Electronics Co., Ltd. | Automatic laser shutdown method and apparatus in optical transmission system |
| CN1567806A (en) * | 2003-06-18 | 2005-01-19 | 华为技术有限公司 | Method and apparatus for implementing optical wavelength conversion function in communication system |
| CN1713548A (en) * | 2004-06-22 | 2005-12-28 | 中兴通讯股份有限公司 | Realization of automatic light shut off function for light transmitting network in circular synchronous digital system |
| CN1713547A (en) * | 2004-06-22 | 2005-12-28 | 中兴通讯股份有限公司 | Realization of automatic light shut off function for light transmitting network in synchronous digital system |
-
2008
- 2008-08-12 CN CN2008101346459A patent/CN101345597B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6194707B1 (en) * | 1998-01-16 | 2001-02-27 | Samsung Electronics Co., Ltd. | Automatic laser shutdown method and apparatus in optical transmission system |
| CN1567806A (en) * | 2003-06-18 | 2005-01-19 | 华为技术有限公司 | Method and apparatus for implementing optical wavelength conversion function in communication system |
| CN1713548A (en) * | 2004-06-22 | 2005-12-28 | 中兴通讯股份有限公司 | Realization of automatic light shut off function for light transmitting network in circular synchronous digital system |
| CN1713547A (en) * | 2004-06-22 | 2005-12-28 | 中兴通讯股份有限公司 | Realization of automatic light shut off function for light transmitting network in synchronous digital system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-339731A 2006.12.14 |
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| CN101345597A (en) | 2009-01-14 |
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