CN101237254A - Optical fiber protection inverse device, method and passive optical network system with the device - Google Patents
Optical fiber protection inverse device, method and passive optical network system with the device Download PDFInfo
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- CN101237254A CN101237254A CNA2008100078797A CN200810007879A CN101237254A CN 101237254 A CN101237254 A CN 101237254A CN A2008100078797 A CNA2008100078797 A CN A2008100078797A CN 200810007879 A CN200810007879 A CN 200810007879A CN 101237254 A CN101237254 A CN 101237254A
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Abstract
The invention relates to an optical fiber protective switching device used for optical fiber protective switching on an OLT side and/or an ONU side of a PON system, comprising a serial deserializer, a main SFP, a standby SFP and a detection module, wherein, the serial deserializer is connected with a PON MAC, is used for series-parallel signal transformation and is provided with a switching function; the main SFP and the standby SFP are respectively connected with a downstream pin of the serial deserializer and respectively connected with a main optical fiber and a standby optical fiber with the same length of a light transmission device; the detection module is connected with the main SFP and the standby SFP and used for detecting and monitoring operating state signals of an SFP device. The invention also comprises a control module which is connected with the PON MAC, the serial deserializer, the detection module, the main SFP and the standby SFP and controls switching of a physical link between the main optical fiber and the standby optical fiber by a switch of the serial deserializer according to the operating state signals. The invention also discloses the optical fiber protective switching method and a PON system. Therefore, the optical fiber protective switching device realizes the telecommunication level protective switching requirement, has low cost, high interface density and is easy to realize.
Description
Technical field
The present invention relates to a kind of optical-fiber network technology; especially with a kind of EPON (PassiveOptical Network that is used for; be called for short PON) system's optical line terminal (Optical Line Terminal; be called for short OLT) optical fibre protection inverting method, the optical fibre protection inverting device of the optical fibre protection inverting of side and/or optical network unit (Optical Network Unit is called for short ONU) side and to have the PON system of this optical fibre protection inverting device relevant.
Background technology
The development of the rise of the Internet, especially multimedia service has caused people that the demand of bandwidth is day by day increased.Traditional copper cable access technology seems unable to do what one wishes in the face of this situation the time, be difficult to adapt to the demand that high bandwidth inserts.Based on the access technology of optical fiber have that high bandwidth, long-distance transmissions ability are strong, advantage such as good confidentiality, antijamming capability are strong, can adapt to the demand of present and following business development to bandwidth, be the main implementation technique of Access Network.In various optical fiber access technologies, PON is because advantages such as its easy care, high bandwidth, low cost become the outstanding person in the light access technology.Along with the increase of broadband access network service, the needs of some Very Important Person networkings especially seem extremely important to the protection of PON system.
Ethernet passive optical network (Ethernet Passive Optical Network, be called for short EPON) and gigabit than EPON (Gigabit-capable Passive Optical Networks, be called for short GPON) be two members the most attractive in the PON technology, more and more become (the Fiber ToThe Home that builds that Fiber to the home of operator, be called for short FTTH), Fiber To The Building system configuration that Optical Access Networks such as (Fiber To The Building are called for short FTTB) takes.
Along with a large amount of operators of PON system use, it is extremely important that carrier level reliability becomes.No exception in connecting system, the PON system point is to multiple spot (Point to Multi Point, abbreviation P2MP) main line optical fiber was extremely important between characteristics determined from OLT to the optical splitter, may influence following user in batches in case break down, even cause its interrupting service.ONU also has variform according to application such as FTTH/FTTB, and multitenant unit (Multiple Dwelling Unit is called for short MDU) type ONU is responsible for inserting a large number of users, and its up link connectedness also needs to be adequately protected.Optical fibre installation can only protect by redundancy backup mode, and for access device, low cost is valued by operator again very much outdoor.
IEEE802.3ah does not claim to EPON system optical fibre protection inverting, and ITU-T has proposed four kinds of optical fibre protection inverting schemes of GPON system in G.984.1.China Telecom Group Corporation is in its corporate specification " requirement of the EPON of China Telecom equipment and technology "; according to G.984.1 having formulated the fiber optic protection scheme; and from practical standpoint main line optical fibre protection inverting method is improved, wherein describe fiber optic protection main following three kinds of schemes are arranged:
Type a: the scheme of trunk optical fiber redundancy protecting, as shown in Figure 1:
OLT: adopt single PON mouth, built-in 1 * 2 optical switch in PON mouth place, by OLT detection line state, its detection mode is waited to study;
Optical branching device: use the 2:N optical branching device;
ONU: no specific (special) requirements.
The scheme of type b:OLT side PON mouth, trunk optical fiber redundancy protecting, as shown in Figure 2:
OLT: standby OLT side PON port is in cold standby state, by OLT detection line state (detection mode is waited to study), OLT side PON port status, switches and should be finished by OLT.
Optical branching device: use the 2:N optical branching device;
ONU: no specific (special) requirements.
This scheme is handled OLT side PON mouth is redundant, like this shortcoming of Chu Liing be two of needs independently the PON mouth finish to protect and switch the cost height; Secondly, switch and relate to physical layer, link layer, application layer and cooperate, system's control is complicated; Also have, can only have a PON mouth in running order simultaneously, another PON mouth is in the cold standby state.ONU need re-register and dispose after the incident of switching, and failure recovery time does not reach the carrier class requirement of 50ms.
Type c: the optical fibre protection inverting scheme of full guard (OLT side PON mouth, trunk optical fiber, optical branching device, the protection of distribution redundant optical fiber), as shown in Figure 3:
OLT: primary, spare OLT side PON mouth is all in running order;
Optical branching device: use two 1:N optical branching devices;
ONU: built in light switching device before the PON port, by ONU detection line state (detection mode is waited to study), and determine the master to use circuit, switch and should finish by ONU.
Scheme a and c adopt built-in 1 * 2 optical switch to realize that processing can guarantee switching time like this, but also exist not enough: existing optical switch volume is big, adds that dish is fine, makes single board interface density limited; Optical switch is an additional devices, and price is very high, and need be built-in, has increased the intrinsic cost of equipment; For the application that does not need the optical fiber backup, needing in addition, design PCB could satisfy.
Introduce the common PON mouth inside main devices structure of (comprising OLT side and ONU side) below again, as shown in Figure 4, comprising:
EPON medium access control chip (Passive Optical Network Media AccessControl, be called for short PON MAC): finish the acp chip of physical layer, link layer control in the PON system, setting is all arranged at OLT side PON mouth and ONU side PON mouth;
Serial and deserializer (SerDes): be used to go here and there and the physical device of conversion of signals; Can be built among the PONMAC and realize, also can independently realize.
SFP optical module (Small Form-Factor Pluggable, be called for short SFP): a kind of SFP optical module, current industry is extensive use of, and replaces fixing port and traditional GBIC optical module, and the ONU side realizes for the SFF of the use fixed light modules that reduce cost more.
CPU: in the PON system, be responsible for the processor that Control Software is carried out;
Control logic: the hardware programmable logical device that is used to monitor, control SFP optical module device signal.
Do not possess the optical fibre protection inverting function in the said system; in case reasons such as optical fiber disconnection can cause customer service to be interrupted; this moment, the Equipment Control logic can not done detection, or detected linkdown notification CPU report and alarm and wait for that the keeper repairs, and network is difficult to control break period.
Summary of the invention
At problems of the prior art; the object of the present invention is to provide a kind of optical fibre protection inverting device that is used for the optical fibre protection inverting of passive optical network OLT side and/or ONU side; solve the (＜50ms) problem of optical fibre protection inverting that realizes in the PON system that carrier class requires; and take into account cost, interface density, implementation complexity aspect simultaneously, make it that technology application widely can be arranged in the PON system.
Another object of the present invention is to provide a kind of optical fibre protection inverting method of optical fibre protection inverting device of the present invention.
A further object of the present invention is to provide a kind of PON system with optical fibre protection inverting device of the present invention.
For achieving the above object, technical scheme of the present invention is as follows:
Optical fibre protection inverting device of the present invention is used for the optical fibre protection inverting of the OLT of PON system side and/or ONU side, comprising:
The serial deserializer links to each other with the PON MAC that is used for the control of EPON physical layer and link layer and is in the OLT of PON system side and/or ONU side, is used to go here and there also conversion of signals, and has switching function;
Active and standby SFP links to each other respectively with the descending pin of described serial deserializer, connects the isometric active and standby optical fiber as optical transmission device respectively;
Detection module links to each other with described active and standby SFP, in order to detect and the working state signal of monitoring described SFP device;
Control module links to each other with described PON MAC, serial deserializer, detection module and active and standby SFP, and it is according to described working state signal, and the switch of controlling described serial deserializer switches physical link between active and standby optical fiber.
According to described optical fibre protection inverting device, also comprise:
Judge module is connected between described detection module and the control module, judges whether standby optical fiber is ready; And/or
Alarm module links to each other with control module with described detection module respectively, when active and standby SFP is in non operating state, and to the network management system alarm, notice link failure incident.
According to described optical fibre protection inverting device, wherein, described working state signal is the RLOS signal of described active and standby SFP.
According to described optical fibre protection inverting device, wherein, described serial deserializer is built among the described PON MAC.
According to described optical fibre protection inverting device; wherein, described detection module is realized that by programmable logic device described control module is realized by the host CPU of OLT side and/or ONU side; wherein, if detect when leading by interrupting sending out public notice signal with the optical fiber cisco unity malfunction.
According to described optical fibre protection inverting device, wherein, described serial deserializer is the multi-channel serial deserializer, and the descending pin of each of described multi-channel serial deserializer connects a pair of active and standby optical fiber.
According to described optical fibre protection inverting device, wherein, also comprise with described PON MAC, described control module link to each other after optical fibre protection inverting is finished, ONU being connected the connection management module that detects with respective handling:
For the OLT side system, detect the connection situation of registered ONU, the ONU of cisco unity malfunction is rolled off the production line initiate the registration of described ONU again, and alarm to network management system;
For the ONU side system, detect the connection situation of registered ONU, can not roll off the production line with the ONU of OLT proper communication and register again, and alarm to network management system.
The present invention also provides a kind of optical fibre protection inverting method, is used for the optical fibre protection inverting of the OLT of PON system side and/or ONU side, comprises step,
Step S100: detect main operating state with optical fiber;
Step S200: when detecting the master, pass through the described control module of interrupt notification with the optical fiber cisco unity malfunction;
Step S300: described control module responds described interruption, and the switch of controlling described serial deserializer switches physical link between active and standby optical fiber.
According to described optical fibre protection inverting method, wherein, described step S300 comprises:
Step S310: judge whether the reserve link state is ready;
Step S320: if reserve link is ready, described control module control serial deserializer switches physical link between active and standby optical fiber;
Step S330: to the network management system alarm, notice link failure incident.
According to described optical fibre protection inverting method, wherein, also be included in and after optical fibre protection inverting is finished ONU connected the step S400 detect with respective handling:
For the OLT side system, detect the connection situation of registered ONU, the ONU of cisco unity malfunction is rolled off the production line initiate the registration of described ONU again, and alarm to network management system;
For the ONU side system, detect the connection situation of registered ONU, can not roll off the production line with the ONU of OLT proper communication and register again, and alarm to network management system.
The present invention also provides a kind of PON system, and this OLT of PON system side and/or ONU side are provided with optical fibre protection inverting device.
According to PON of the present invention system, wherein, described OLT side is provided with described optical fibre protection inverting device, and described ONU side is provided with uses the fixed light module to connect optical fiber as transmission equipment.
As shown from the above technical solution, the present invention has following beneficial effect: optical fibre protection inverting device of the present invention and relation protection reverse method thereof, and realized that requirement is switched in the protection of carrier-class 50ms, and do not reached this index by PON mouth redundant fashion.
Optical fibre protection inverting device of the present invention and relation protection reverse method thereof; in the optical fiber backup scenario, further reduce cost; for at the essential SerDes device of PON mouth; select low cost S erDes device for use with switching function; replace expensive optical switch to realize the function of link switchover, its cost with solidify the light shutter device mode and realize that the optical fibre protection inverting scheme is compared and can ignore.
The port number of SerDes can be more, chip size is less, size than current optical switch, saved the space greatly, and optical switch also needs dish fine, thereby is realizing that the present invention program on interface density and the implementation complexity obviously is better than the scheme of the optical switch cut-in stand-by link of prior art.
By selecting SFP type light module for use, when not needing the optical fiber backup, can further reduce expensive optical module cost, therefore optical fibre protection inverting device of the present invention and relation thereof protection reverse method has very strong versatility.
Can predict at present in the technical scheme that realizes optical fibre protection inverting, the technical solution of the present invention cost is low, has a clear superiority at aspects such as switching time, cost control, interface density, implementation complexity.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is a trunk optical fiber redundancy protecting scheme schematic diagram;
Fig. 2 is an OLT PON mouth redundancy protecting scheme schematic diagram;
Fig. 3 is the optical fibre protection inverting scheme schematic diagram of full guard;
Fig. 4 is the PON mouth structure schematic diagram of prior art;
Fig. 5 is the PON mouth structure schematic diagram of optical fibre protection inverting device of the present invention;
Fig. 6 is the flow chart of optical fibre protection inverting method of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings and the specific embodiments.
Optical fibre protection inverting device of the present invention; at the difference of PON system for reliability requirement; the optical fibre protection inverting that both can be used for the OLT of PON system side and ONU side simultaneously also can be used for the OLT of PON system side separately or be used for the optical fibre protection inverting of the ONU side of PON system separately.
Optical fibre protection inverting device of the present invention is arranged in the PON mouth of the OLT of PON system side or ONU side, as shown in Figure 5, comprising:
PON MAC is used for the control of EPON physical layer and link layer;
Serial deserializer (SerDes) links to each other with described PON MAC, is used for string and conversion of signals, and optical fibre protection inverting device of the present invention selects for use the serial deserializer with switching function in order to realize link switchover; Have the serial deserializer of switching function, can buy on market, its price can be ignored than the curing optical switch of thousands of units.
Active and standby SFP links to each other respectively with the descending pin of described serial deserializer, connects the isometric active and standby optical fiber as optical transmission device respectively; At the PON mouth of the OLT of PON system side, active and standby SFP connects active and standby trunk optical fiber respectively, and at the PON mouth of the ONU of PON system side, active and standby SFP connects active and standby distribution optical fiber respectively.In actual applications, can at first specifying wherein, an optical fiber is the main optical fiber of using.After carrying out optical fibre protection inverting, standby optical fiber originally becomes the main optical fiber of using, and master originally gets rid of the back as standby optical fiber with optical fiber through fault.
Detection module links to each other with described active and standby SFP, in order to detecting the working state signal with the described SFP device of monitoring, and will detect main during with the optical fiber cisco unity malfunction by the interruption signal of sending out public notice.Preferably, described working state signal is described master and/or the RLOS signal that is equipped with SFP.
Control module links to each other with described PON MAC, serial deserializer, detection module and active and standby SFP, when monitoring the master with the optical fiber cisco unity malfunction, responds described notification signal, and can control the switch realization optical fibre protection inverting of described serial deserializer.
In preferred embodiment of the present invention, described optical fibre protection inverting device can also comprise judge module and/or alarm module.Judge module is connected between described detection module and the control module, judges whether standby optical fiber is ready; Alarm module links to each other with control module with described detection module respectively, when leading and/or SFP is in non operating state fully, and to the network management system alarm, notice link failure incident.
Need to prove; described serial deserializer also can be built in described PON MAC; built-in serial deserializer can further reduce the present invention and concern the cost of protecting changeover apparatus, can reduce the present invention simultaneously and concern the volume of protecting changeover apparatus, can help improving interface density.Optical fibre protection inverting device of the present invention, the serial deserializer can be built in PON MAC, also can be independent of PON MAC.The PONMAC chip SerDes part that has the SerDes function of current E/G PON chip manufacturers produce can be chosen separately as there not being switching function.
Described detection module can be realized that described control module is realized by the host CPU of OLT side and/or ONU side by programmable logic device.At first programmable logic device is connected with active and standby SFP respectively, is used to detect and monitor the device signal of described SFP; By detecting and the device signal of monitoring described SFP, realize the main and/or monitoring of the operating state of SFP fully, mainly be the monitoring of main operating state with optical fiber, for example, detect with described master of monitoring and/or the working state signal that is equipped with SFP be described master and/or the RLOS signal that is equipped with SFP.
Host CPU links to each other with programmable logic device with described PON MAC, serial deserializer, and running control software on it is finished the function of described control module, judge module and/or alarm module.Specifically; the optical fibre protection inverting of the whole control of host CPU optical fibre protection inverting device; receive described programmable logic device notification signal by interrupting sending when detecting the master with the optical fiber cisco unity malfunction; respond described notification signal; this notification signal shows main undesired with fiber work; be enough to carry out optical fibre protection inverting, the switch of then controlling described serial deserializer switches physical link realizes optical fibre protection inverting.Simultaneously, CPU last operation warning system and log system, protect switch in, CPU wants report and alarm to give the keeper, repairs break down main and uses optical fiber, and simultaneously alarm event is recorded in log system.CPU also links to each other with PON MAC, registration scenarios that can perception ONU, and can normally communicate with OLT at the ONU of registration.
In addition, described serial deserializer can be selected the multi-channel serial deserializer for use, and the descending pin of described multi-channel serial deserializer connects many to active and standby optical fiber, controls its protection by control module and CPU and switches.Adopt multichannel serial deserializer, improved the interface density of the optical fibre protection inverting device of the embodiment of the invention.
In preferred embodiment of the present invention, described optical fibre protection inverting device can also comprise the connection management module, the connection management module links to each other with described PON MAC, described control module, be used for after optical fibre protection inverting is finished ONU connected and detect and fault is done respective handling: for the OLT side system, detect the connection situation of registered ONU by PON MAC, the ONU of cisco unity malfunction rolled off the production line initiate the registration of described ONU again, and alarm to network management system; For the ONU side system, detect the connection situation of registered ONU, can not roll off the production line with the ONU of OLT proper communication and register again, and alarm to network management system.Can CPU can come the registration scenarios of perception ONU by the connection management module, and normally communicate with OLT at the ONU of registration.
The optical fibre protection inverting device of the embodiment of the invention; switch for the mandatory protection that the keeper carries out; the modes such as control desk order line, Simple Network Management Protocol (Simple NetworkManagement Protocol is called for short SNMP) webmaster of can passing through realize by the CPU control program; principle is consistent with APS, does not do at this and gives unnecessary details.
Introduce the optical fibre protection inverting method of the embodiment of the invention below again.
Use the optical fibre protection inverting method of the optical fibre protection inverting device of the embodiment of the invention, go for the optical fibre protection inverting of the OLT of PON system side and/or ONU side, comprise step,
Step S100: described detection module detects main operating state with optical fiber;
Step S200: interrupt notification control module when described detection module detects the master with the optical fiber cisco unity malfunction;
Step S300: described control module responds described interruption, and the switch of controlling described serial deserializer switches physical link realizes optical fibre protection inverting.
As shown in Figure 6, the optical fibre protection inverting method of the embodiment of the invention, its step further can be refined as:
Step S100: detect main device signal with SFP by control logic; By to the main monitoring of using the device signal of SFP, realize the monitoring with the optical fiber operating state to the master, find that in time the master uses the unusual of optical fiber;
Step S210: judge whether to detect the RLOS signal, when causing light path interruption or Signal Degrade because of the external world in the optical fiber use, the control logic of Programmable Logic Controller can detect the RLOS signal when main; If detect the RLOS signal, execution in step S220 then; If do not detect the RLOS signal, then continue execution in step S100;
Step S220: control logic is by interrupting to control logic by interrupting the incident to CPU notice RLOS; Detect the RLOS signal, it is main undesired with fiber work then to show, need carry out link switchover, therefore reports interruption to CPU, and request CPU handles;
Step S230:CPU receives interruption; To respond this interruption according to the rule of setting among the CPU.
Step S310: judge at first whether reserve link is ready,,, can not solve the problem that exists in the PON system, also delay the time that network management system is dealt with problems simultaneously even switch because if reserve link is not ready; Ready as reserve link, then carry out step S320; As not ready, then directly carry out step S330;
Step S320:CPU control serial deserializer switches physical link.Because the serial deserializer has switching function, the descending pin that originally was connected with main SFP switched to and the descending pin that is connected of SFP fully, realize the physical link switching.
Step S330: to the network management system alarm, notice link failure incident.When switching, also need to network management system alarm, request is in time repaired the main of cisco unity malfunction and use optical fiber, make its rapidly reparation with as new standby optical fiber.
And then in order to increase the reliability of PON system, optical fibre protection inverting method of the present invention also is included in and after optical fibre protection inverting is finished ONU is connected the step S400 that detects with respective handling:
For the OLT side system, PON MAC detects the connection situation at registration ONU, and the ONU of cisco unity malfunction is rolled off the production line, and the ONU that rolls off the production line re-registers, and to the network management system alarm ONU cisco unity malfunction is arranged;
For the ONU side system, detect connection situation at registration ONU, can not roll off the production line with the ONU of OLT proper communication and register again, find range again, and alarm to network management system.
The protection reverse method of the embodiment of the invention and the optical fibre protection inverting device of the embodiment of the invention; require primary, spare optical fiber isometric for realizing that optical fiber is switched fast; can not the proper communication problem solve to switch OLT that the back causes apart from change because of OLT and ONU and ONU; if, need step S400 to recover fault in case occur.
The optical fibre protection inverting device of the embodiment of the invention can be applied to the PON system of the embodiment of the invention, and the distribution optical fiber of the ONU side of the trunk optical fiber of the OLT of PON system side and/or PON system is carried out optical fibre protection inverting.
In some not high application scenarios of reliability requirement to the ONU side of PON system; the PON system of another embodiment of the present invention; can described optical fibre protection inverting device be set a described OLT side in the PON system; described ONU side uses the fixed light module to replace SFP, by the optical fiber of fixed light module connection as transmission equipment.Such structure can further reduce cost.
Above-described only is preferable possible embodiments of the present invention; described embodiment is not in order to limit scope of patent protection of the present invention; therefore the equivalent structure done of every utilization specification of the present invention and accompanying drawing content changes, and in like manner all should be included in protection scope of the present invention.
Claims (12)
1. optical fibre protection inverting device is used for the optical fibre protection inverting of the OLT of PON system side and/or ONU side, comprising:
The serial deserializer links to each other with the PON MAC that is used for the control of EPON physical layer and link layer and is in the OLT of PON system side and/or ONU side, is used to go here and there also conversion of signals, and has switching function;
Active and standby SFP links to each other respectively with the descending pin of described serial deserializer, connects the isometric active and standby optical fiber as optical transmission device respectively;
Detection module links to each other with described active and standby SFP, in order to detect and the working state signal of monitoring described SFP device;
Control module links to each other with described PON MAC, serial deserializer, detection module and active and standby SFP, and it is according to described working state signal, and the switch of controlling described serial deserializer switches physical link between active and standby optical fiber.
2. optical fibre protection inverting device as claimed in claim 1 is characterized in that, also comprises:
Judge module is connected between described detection module and the control module, judges whether standby optical fiber is ready; And/or
Alarm module links to each other with control module with described detection module respectively, when leading and/or SFP is in non operating state fully, and to the network management system alarm, notice link failure incident.
3. optical fibre protection inverting device as claimed in claim 1 is characterized in that, described working state signal is the RLOS signal of described active and standby SFP.
4. optical fibre protection inverting device as claimed in claim 1 is characterized in that: described serial deserializer is built among the described PON MAC.
5. as the arbitrary described optical fibre protection inverting device of claim 1-4; it is characterized in that: described detection module is realized by programmable logic device; described control module is realized by the host CPU of OLT side and/or ONU side; wherein, if detect when leading by interrupting sending out public notice signal with the optical fiber cisco unity malfunction.
6. optical fibre protection inverting device as claimed in claim 1 is characterized in that: described serial deserializer is the multi-channel serial deserializer, and the descending pin of each of described multi-channel serial deserializer connects a pair of active and standby optical fiber.
7. optical fibre protection inverting device as claimed in claim 1 is characterized in that, also comprises with described PON MAC, described control module link to each other after optical fibre protection inverting is finished ONU being connected the connection management module that detects with respective handling:
For the OLT side system, detect the connection situation of registered ONU, the ONU of cisco unity malfunction is rolled off the production line initiate the registration of described ONU again, and alarm to network management system;
For the ONU side system, detect the connection situation of registered ONU, can not roll off the production line with the ONU of OLT proper communication and register again, and alarm to network management system.
The optical fibre protection inverting method of 8 one kinds of described optical fibre protection inverting devices of claim 1 is used
Optical fibre protection inverting in the OLT of PON system side and/or ONU side comprises step,
Step S100: detect main operating state with optical fiber;
Step S200: when detecting the master, pass through the described control module of interrupt notification with the optical fiber cisco unity malfunction;
Step S300: described control module responds described interruption, and the switch of controlling described serial deserializer switches physical link between active and standby optical fiber.
9 optical fibre protection inverting methods as claimed in claim 8 is characterized in that described step
S300 comprises:
Step S310: judge whether the reserve link state is ready;
Step S320: if reserve link is ready, described control module control serial deserializer switches physical link between active and standby optical fiber;
Step S330: to the network management system alarm, notice link failure incident.
10. optical fibre protection inverting method as claimed in claim 8 is characterized in that, also is included in after optical fibre protection inverting is finished ONU to be connected the step S400 that detects with respective handling:
For the OLT side system, detect the connection situation of registered ONU, the ONU of cisco unity malfunction is rolled off the production line initiate the registration of described ONU again, and alarm to network management system;
For the ONU side system, detect the connection situation of registered ONU, can not roll off the production line with the ONU of OLT proper communication and register again, and alarm to network management system.
11. a PON system is characterized in that, this OLT of PON system side and/or ONU side are provided with the described optical fibre protection inverting device of claim 1.
12. PON as claimed in claim 11 system is characterized in that described OLT side is provided with described optical fibre protection inverting device, described ONU side uses the fixed light module to connect optical fiber as transmission equipment.
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| CNA2008100078797A CN101237254A (en) | 2008-02-27 | 2008-02-27 | Optical fiber protection inverse device, method and passive optical network system with the device |
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| CNA2008100078797A CN101237254A (en) | 2008-02-27 | 2008-02-27 | Optical fiber protection inverse device, method and passive optical network system with the device |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651495A (en) * | 2009-09-25 | 2010-02-17 | 中兴通讯股份有限公司 | Method and device for protecting trunk fibers of wavelength division multiplex (WDM) passive optical network (PON) |
| WO2010133065A1 (en) * | 2009-05-21 | 2010-11-25 | 中兴通讯股份有限公司 | Protection system and method based on the passive optical network |
| CN101951290A (en) * | 2010-09-01 | 2011-01-19 | 深圳市业通达实业有限公司 | EPON (Ethernet Passive Optical Network) optical channel protection technology |
| CN101982984A (en) * | 2010-11-12 | 2011-03-02 | 安徽省电力公司信息通信分公司 | Optical-fiber protection switching method of ONU equipment in electric EPON system |
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| CN102255661A (en) * | 2011-06-10 | 2011-11-23 | 武汉长光科技有限公司 | Subminiature programmable optical communication module for intelligent power grid |
| CN102386970A (en) * | 2011-06-24 | 2012-03-21 | 深圳键桥通讯技术股份有限公司 | Optical network unit (ONU) device of EPON (Ethernet Passive Optical Network) system and protection switching method for same |
| CN101771469B (en) * | 2008-12-26 | 2013-04-24 | 古河电气工业株式会社 | Customer premises optical network unit |
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| CN105472325A (en) * | 2015-11-20 | 2016-04-06 | 武汉微创光电股份有限公司 | Method for dual protection during network video monitoring |
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| CN106452565A (en) * | 2015-08-11 | 2017-02-22 | 北京智芯微电子科技有限公司 | Double-PON double-MAC protection power collection device and working method thereof |
| CN106612564A (en) * | 2015-10-21 | 2017-05-03 | 普天信息技术有限公司 | Method and device for replacement of user physical interface in base station |
| CN108134655A (en) * | 2017-12-19 | 2018-06-08 | 深圳先进技术研究院 | A kind of method and controller of determining communication link state |
| CN109100116A (en) * | 2018-05-24 | 2018-12-28 | 烽火通信科技股份有限公司 | A kind of optical module fault diagnosis system and method |
| CN109379647A (en) * | 2018-10-18 | 2019-02-22 | 盛科网络（苏州）有限公司 | A kind of method and apparatus for realizing line card first line of a couplet main control unit in distributed OLT |
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| CN111757051A (en) * | 2020-05-20 | 2020-10-09 | 惠州市德赛西威智能交通技术研究院有限公司 | Data transmission method, intelligent terminal and radar system |
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2008
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| CN101771469B (en) * | 2008-12-26 | 2013-04-24 | 古河电气工业株式会社 | Customer premises optical network unit |
| US8724453B2 (en) | 2009-05-14 | 2014-05-13 | Zte Corporation | Method and apparatus for implementing trunk optical fiber protection in ethernet passive optical network (EPON) |
| WO2010133065A1 (en) * | 2009-05-21 | 2010-11-25 | 中兴通讯股份有限公司 | Protection system and method based on the passive optical network |
| CN101674463B (en) * | 2009-09-02 | 2011-08-17 | 太仓市同维电子有限公司 | Method for improving reliability of passive optical network video monitoring system |
| CN101651495A (en) * | 2009-09-25 | 2010-02-17 | 中兴通讯股份有限公司 | Method and device for protecting trunk fibers of wavelength division multiplex (WDM) passive optical network (PON) |
| CN101951290A (en) * | 2010-09-01 | 2011-01-19 | 深圳市业通达实业有限公司 | EPON (Ethernet Passive Optical Network) optical channel protection technology |
| CN101982984A (en) * | 2010-11-12 | 2011-03-02 | 安徽省电力公司信息通信分公司 | Optical-fiber protection switching method of ONU equipment in electric EPON system |
| CN102255661A (en) * | 2011-06-10 | 2011-11-23 | 武汉长光科技有限公司 | Subminiature programmable optical communication module for intelligent power grid |
| CN102386970A (en) * | 2011-06-24 | 2012-03-21 | 深圳键桥通讯技术股份有限公司 | Optical network unit (ONU) device of EPON (Ethernet Passive Optical Network) system and protection switching method for same |
| CN102386970B (en) * | 2011-06-24 | 2014-08-06 | 深圳键桥通讯技术股份有限公司 | Optical network unit (ONU) device of EPON (Ethernet Passive Optical Network) system and protection switching method for same |
| CN103441793B (en) * | 2013-08-30 | 2017-01-25 | 上海斐讯数据通信技术有限公司 | Method for realizing reliable communication between optical links |
| CN106452565B (en) * | 2015-08-11 | 2019-04-12 | 北京智芯微电子科技有限公司 | A kind of the electric power acquisition device and its working method of the bis- MAC protections of double PON |
| CN106452565A (en) * | 2015-08-11 | 2017-02-22 | 北京智芯微电子科技有限公司 | Double-PON double-MAC protection power collection device and working method thereof |
| CN106612564A (en) * | 2015-10-21 | 2017-05-03 | 普天信息技术有限公司 | Method and device for replacement of user physical interface in base station |
| CN106612564B (en) * | 2015-10-21 | 2020-05-08 | 普天信息技术有限公司 | Method and device for replacing user physical interface in base station |
| CN105472325A (en) * | 2015-11-20 | 2016-04-06 | 武汉微创光电股份有限公司 | Method for dual protection during network video monitoring |
| CN108134655A (en) * | 2017-12-19 | 2018-06-08 | 深圳先进技术研究院 | A kind of method and controller of determining communication link state |
| CN108134655B (en) * | 2017-12-19 | 2021-01-19 | 深圳先进技术研究院 | Method and controller for determining communication link state |
| CN109100116A (en) * | 2018-05-24 | 2018-12-28 | 烽火通信科技股份有限公司 | A kind of optical module fault diagnosis system and method |
| CN109379647A (en) * | 2018-10-18 | 2019-02-22 | 盛科网络（苏州）有限公司 | A kind of method and apparatus for realizing line card first line of a couplet main control unit in distributed OLT |
| CN111356038A (en) * | 2018-12-24 | 2020-06-30 | 深圳市中兴微电子技术有限公司 | Method for realizing channel self-adaption in PON and related equipment |
| CN111356038B (en) * | 2018-12-24 | 2023-08-08 | 深圳市中兴微电子技术有限公司 | Method for realizing channel self-adaption in PON and related equipment |
| WO2020186388A1 (en) * | 2019-03-15 | 2020-09-24 | 华为技术有限公司 | Light-emitting assembly, optical module, and optical line terminal |
| CN110650048A (en) * | 2019-09-24 | 2020-01-03 | 中国人民解放军61623部队 | Intelligent digital wiring system based on IMS |
| CN110650048B (en) * | 2019-09-24 | 2022-03-18 | 中国人民解放军61623部队 | Intelligent digital wiring system based on IMS |
| CN111757051A (en) * | 2020-05-20 | 2020-10-09 | 惠州市德赛西威智能交通技术研究院有限公司 | Data transmission method, intelligent terminal and radar system |
| CN111757051B (en) * | 2020-05-20 | 2022-07-26 | 惠州市德赛西威智能交通技术研究院有限公司 | Data transmission method, intelligent terminal and radar system |
| CN113395614A (en) * | 2021-06-03 | 2021-09-14 | 博为科技有限公司 | Passive optical network system and data transmission method |
| CN113660555A (en) * | 2021-06-25 | 2021-11-16 | 绍兴电力局柯桥供电分局 | Uplink channel fault detection system of passive optical network |
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