CN101667862A - Optical network system, optical network equipment and exchanging method thereof - Google Patents
Optical network system, optical network equipment and exchanging method thereof Download PDFInfo
- Publication number
- CN101667862A CN101667862A CN 200810141748 CN200810141748A CN101667862A CN 101667862 A CN101667862 A CN 101667862A CN 200810141748 CN200810141748 CN 200810141748 CN 200810141748 A CN200810141748 A CN 200810141748A CN 101667862 A CN101667862 A CN 101667862A
- Authority
- CN
- China
- Prior art keywords
- optical
- optical network
- light signal
- network device
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computing Systems (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
The embodiment of the invention discloses a method for exchanging optical network equipment, which comprises the following steps that: first optical network equipment receives an optical signal whichis sent by second optical network equipment and bears backup information through a second optical fiber; and the first optical network equipment detects the received optical signal, and is switched toa master state from a standby state by utilizing the backup information if exchanging conditions are satisfied. The invention also provides an optical network system and the optical network equipment. The method, the system and the equipment realize the quick detection of faults and the data synchronization of master and slave OLTs, can quickly realize the exchanging between the main and slave OLTs when the master OLT breaks down or the master OLT requires to be switched, do not need to add an active device into the prior ODN, also have relatively simple change to the OLTs, and have relatively lower implementation, construction and maintenance cost.
Description
Technical field
The present invention relates to the communications field, specifically, relate to a kind of optical network system, optical network device and reverse method thereof.
Background technology
Passive optical network PON is made up of optical line terminal OLT, Optical Distribution Network ODN and optical network unit ONU.As shown in the figure 1, OLT is connected with optical branching device by a trunk optical fiber as local side apparatus, and optical branching device connects each ONU by independent branch optical fiber.Traditional optical branching device is just realized the beam split of light signal and converges do not have the enlarging function of light signal, therefore is called EPON.
Can continue to provide professional when equipment fault or the fiber failure in order to ensure EPON, need realize backup protection between the OLT in the trunk optical fiber section.As shown in Figure 2, mutually redundant two OLT equipment are connected with optical branching device by trunk optical fiber independently.Under the normal condition, have only the master to communicate by letter with ONU with trunk optical fiber by main with OLT.Detect mainly in system, switch to spare OLT equipment and standby trunk optical fiber is communicated by letter with ONU with OLT equipment fault or main during with the trunk optical fiber fault.In order to guarantee professional fast quick-recovery, should realize the fast detecting of OLT fault and reduce the time that reconfigures ONU after active and standby OLT switches as far as possible.Need the information such as configuration data of ONU in time synchronously between the active and standby OLT, guarantee that master new behind the masterslave switchover does not need to reconfigure just transport service at once of ONU with OLT.
Prior art is integrated image intensifer and two virtual ONU in optical branching device, and as shown in Figure 3, an ONU communicates by letter with OLT with main, and an ONU communicates by letter with spare OLT, also has communication port between these two ONU.Because have communication port between two virtual ONU, can realize data communication between the active and standby OLT.If send dropout LOS alarm with the main virtual ONU that communicates by letter with OLT, think main with trunk optical fiber fault or the main OLT fault of using, this LOS alarm can communicating by letter by the communication between two virtual ONU and standby virtual ONU and spare OLT, send to spare OLT, whether spare OLT switches to the main OLT that uses according to LOS alarm decision.
The inventor is in realizing process of the present invention, find that there is following problem at least in prior art: prior art increases image intensifer and two virtual ONU in optical branching device, image intensifer and these active equipments of virtual ONU promptly in existing ODN, have been increased, construction cost is higher, and later maintenance is also comparatively complicated.
Summary of the invention
The technical problem that the embodiment of the invention will solve is: a kind of optical network system, optical network device and reverse method thereof are provided, overcome existing OLT switching technique in order to realize fault fast detecting and active and standby OLT data sync, in ODN, increase active device, thereby caused the defective of cost height, later maintenance complexity.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of optical network device, comprise: optical line terminal module and optical network unit module, optical network unit module and optical line terminal module couple, the optical line terminal module is connected with the network-side port of optical branching device by first optical fiber, the optical network unit module is connected with the user-side port of optical branching device by second optical fiber, wherein: the optical network unit module, be used for receiving the light signal that carries backup information that the opposite end optical network device sends by second optical fiber, the light signal that receives is detected, the backup information in the detected light signal is sent to the optical line terminal module; Satisfy switching condition if detect, notice optical line terminal module switches to mainly use state, and wherein, above-mentioned switching condition comprises: light signal unusually, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
Correspondingly, the embodiment of the invention also provides a kind of optical network system, comprising: user side optical network device, optical branching device and at least two network side optical network devices, and the user side optical network device is connected with the user-side port of optical branching device by optical fiber; Each network side optical network device is connected to optical branching device by at least two optical fiber, wherein, be connected to the network-side port of optical branching device by first optical fiber, be connected to the user-side port of optical branching device by second optical fiber, wherein: the first network side optical network device at least two network side optical network devices, be used for receiving the light signal that carries backup information that the second network side optical network device sends by second optical fiber, the light signal that receives is detected, if satisfy switching condition, utilize backup information to switch to the main state of using from stand-by state, wherein, above-mentioned switching condition comprises: light signal is unusual, comprise one or more combinations of switching order in data exception in the light signal and the light signal.
Correspondingly, the embodiment of the invention also provides a kind of method for exchanging optical network equipment, above-mentioned optical network device is connected with the network-side port of optical branching device by first optical fiber, and be connected with the user-side port of optical branching device by second optical fiber, this method comprises: first optical network device receives the light signal that carries backup information of second optical network device transmission by second optical fiber; First optical network device detects the light signal that receives, if satisfy switching condition, utilize backup information to switch to the main state of using from stand-by state, wherein, above-mentioned switching condition comprises: light signal is unusual, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
The technical scheme that is provided by the invention described above embodiment as can be seen, the invention provides a kind of optical network system, optical network device and reverse method thereof, not only realize fault fast detecting and active and standby OLT data sync, when the master requires to switch with OLT with OLT fault or master, can realize switching between the active and standby OLT fast, and need in present ODN, not increase active device, and the change of OLT is also simple relatively, and realization, construction, maintenance cost are relatively low.
Description of drawings
Fig. 1 is the structural representation of EPON in the prior art;
Fig. 2 is the structural representation of the active and standby OLT protection of EPON in the prior art;
Fig. 3 realizes the structural representation of active and standby OLT protection for integrated image intensifer and virtual ONU in the optical branching device in the prior art;
The structural representation of a kind of optical network system that Fig. 4 provides for the embodiment of the invention;
The method flow diagram that Fig. 5 switches for a kind of optical network device that the embodiment of the invention provides.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings, the present invention is described in more detail.
The embodiment of the invention provides a kind of optical network device, optical network system and method for exchanging optical network equipment.Wherein, optical network device comprises: optical line terminal module and optical network unit module, optical network unit module and optical line terminal module couple, the optical line terminal module is connected with the network-side port of optical branching device by first optical fiber, the optical network unit module is connected with the user-side port of optical branching device by second optical fiber, wherein: the optical network unit module, be used for receiving the light signal that carries backup information that the opposite end optical network device sends by second optical fiber, the light signal that receives is detected, the backup information in the detected light signal is sent to the optical line terminal module; Satisfy switching condition if detect, notice optical line terminal module switches to mainly use state, and wherein, above-mentioned switching condition comprises: light signal unusually, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
Among each embodiment below the present invention, first optical fiber that is connected in the network-side port of optical network device and optical branching device is referred to as trunk optical fiber, and second optical fiber that is connected in the user-side port of optical network device and optical branching device is referred to as branch optical fiber.
As shown in Figure 4, the structural representation of the optical network system that provides for the embodiment of the invention, comprise: user side optical network device (ONU), optical branching device and at least two network side optical network devices (OLT), the user side optical network device is connected with the user-side port of optical branching device by optical fiber; Each network side optical network device is connected to optical branching device by at least two optical fiber, wherein, be connected to the network-side port of optical branching device by first optical fiber (trunk optical fiber), be connected to the user-side port of optical branching device by second optical fiber (branch optical fiber), wherein: the first network side optical network device at least two network side optical network devices, be used for receiving the light signal that carries backup information that the second network side optical network device sends by second optical fiber, the light signal that receives is detected, if satisfy switching condition, utilize backup information to switch to the main state of using from stand-by state, wherein, above-mentioned switching condition comprises: light signal is unusual, comprise one or more combinations of switching order in data exception in the light signal and the light signal.
Wherein, above-mentioned the light signal that receives is detected, comprise and be not limited to following content: the physical parameter to light signal itself detects (as luminous power etc.), judges whether light signal itself is unusual; The light signal that receives is carried out opto-electronic conversion, data is detected, judgment data whether unusual (whether the error rate or message by forward error correction coding FEC can resolve), whether comprise backup information, whether comprise and switch order.
Concrete, the above-mentioned first network side optical network device comprises: optical network unit module and optical line terminal module, optical network unit module and optical line terminal module couple, the optical network unit module is connected with the user-side port of optical branching device by branch optical fiber, the optical line terminal module is connected with the network-side port of optical branching device by trunk optical fiber, wherein: the optical network unit module, be used for receiving the light signal that carries backup information that the second network side optical network device sends by branch optical fiber, the light signal that receives is detected, the backup information in the detected light signal is sent to the optical line terminal module; Satisfy switching condition if detect, notice optical line terminal module switches to the main state of using, wherein, above-mentioned switching condition comprises: comprise one or more combinations of switching order in data exception in unusual, the above-mentioned light signal of above-mentioned light signal and the above-mentioned light signal.
Wherein, above-mentioned optical network unit module can be existing optical network unit ONU optical module.
Above-mentioned backup information comprises one or more combinations of ranging information, service configuration information and running state information.By backup information, new master does not need to reconfigure just transport service at once of ONU with OLT behind the masterslave switchover.
Wherein, the second network side optical network device is operated in the master and uses state, and its inner ONU module does not need work, and the first network side optical network device is operated in stand-by state, and its inner ONU module then needs work.When operate as normal, the main information that backs up of will needing by downlink optical signal with OLT sends to the ONU module of spare OLT via the branch optical fiber of main trunk optical fiber with OLT, optical branching device, spare OLT, the ONU module of spare OLT directly is transmitted to these information the OLT module of spare OLT more fast by the communication interface of inside, thereby make when switching, spare OLT is utilized these information to finish fast and is switched, and prevents service disconnection.ONU module in the spare OLT; also monitor the main downlink optical signal that sends by its trunk optical fiber with OLT by the branch optical fiber of spare OLT; if find that the data exception in the unusual or light signal of light signal is promptly main with OLT fault (comprising main trunk optical fiber fault with OLT equipment fault or the main OLT of using); perhaps main having sent in downlink optical signal with OLT switched order (promptly the master is upgraded to main using with OLT active request spare OLT); then notify the spare OLT at place to switch to the main state of using; send the alarm of masterslave switchover simultaneously, this ONU module quits work then.
By the branch optical fiber of ONU module in above-mentioned connection optical branching device and the spare OLT, when the master sends information to the ONU module in the spare OLT with OLT, only need as treating common ONU, handle getting final product.
Above-mentioned optical network unit module also is used for if succeed in registration, notifying above-mentioned optical line terminal module to enter stand-by state to above-mentioned second network side optical network device registration; If registration failure notifies above-mentioned optical line terminal module to enter the main state of using.
When OLT powered on, ONU module was wherein at first registered with OLT to main.If succeed in registration, then show to exist the master to use OLT, this ONU module notifies the OLT at its place to enter standby starting state, and is not luminous to ODN, and this ONU module begins to monitor the main OLT that uses simultaneously; If registration is unsuccessful, then show the OLT of OLT at first starting at this ONU module place, the OLT at this ONU module notice place enters normal starting state (the promptly main state of using), luminous to ODN, find range, start all ONU, this ONU module is finished the work simultaneously, quits work.
In the embodiment of the invention, spare OLT receives the main light signal that carries backup information that sends with OLT by branch optical fiber, and the light signal that receives is detected, if satisfy switching condition, utilizes backup information to switch to the main state of using from stand-by state.Not only realize fault fast detecting and active and standby 0LT data sync, thereby guarantee switching fast between the active and standby OLT, and need not increase active device in present ODN, the change of OLT is also simple relatively, and realization, construction, maintenance cost are relatively low.
As shown in Figure 5, the method flow diagram that a kind of optical network device that provides for the embodiment of the invention is switched, above-mentioned optical network device is connected with the network-side port of optical branching device by first optical fiber (trunk optical fiber), and be connected with the user-side port of optical branching device by second optical fiber (branch optical fiber),, said method comprises:
Step S501, first optical network device receive the light signal that carries backup information that second optical network device sends by second optical fiber;
Concrete, above-mentioned backup information comprises one or more combinations of ranging information, service configuration information and running state information.Second optical network device (the promptly main OLT that uses) is sent to first optical network device (be spare OLT) with trunk optical fiber, optical branching device, candidate branch optical fiber with the above-mentioned light signal that carries backup information via main.
Step S502, first optical network device detect the light signal that receives, if satisfy switching condition, utilize above-mentioned backup information to switch to the main state of using from stand-by state, wherein, above-mentioned switching condition comprises: comprise one or more combinations of switching order in data exception in unusual, the above-mentioned light signal of above-mentioned light signal and the above-mentioned light signal.
Concrete, above-mentioned the light signal that receives is detected, comprise and be not limited to following content: the physical parameter to light signal itself detects (as luminous power etc.), judges whether light signal itself is unusual; The light signal that receives is carried out opto-electronic conversion, data is detected, judgment data whether unusual (whether the error rate or message by forward error correction coding FEC can resolve), whether comprise backup information, whether comprise and switch order.
Concrete, light signal is unusual, the data exception in the light signal is promptly main with OLT fault (comprising main trunk optical fiber fault with OLT equipment fault or the main OLT of using); Comprise in the light signal and switch order that promptly the master is upgraded to main using with OLT active request spare OLT.
Before step S501, said method also comprises: first optical network device is registered to second optical network device; If succeed in registration, first optical network device enters stand-by state.
Be OLT when powering on, at first register with OLT to main.If succeed in registration, then show to exist the master to use OLT, this OLT enters standby starting state, and is not luminous to ODN, and this OLT begins to monitor the main OLT that uses simultaneously; If registration is unsuccessful, then show the OLT of this OLT at first starting, this OLT enters normal starting state (the promptly main state of using), and is luminous to ODN, finds range, starts all ONU.
In the embodiment of the invention, spare OLT receives the main light signal that carries backup information that sends with OLT by branch optical fiber, and the light signal that receives is detected, if satisfy switching condition, utilizes backup information to switch to the main state of using from stand-by state.Not only realize fault fast detecting and active and standby 0LT data sync, thereby guarantee switching fast between the active and standby OLT, and need not increase active device in present ODN, the change of OLT is also simple relatively, and realization, construction, maintenance cost are relatively low.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of optical network device, it is characterized in that, comprise: optical line terminal module and optical network unit module, described optical network unit module and described optical line terminal module couple, described optical line terminal module is connected with the network-side port of optical branching device by first optical fiber, described optical network unit module is connected with the user-side port of described optical branching device by second optical fiber, wherein:
Described optical network unit module, be used for receiving the light signal that carries backup information that the opposite end optical network device sends by described second optical fiber, the light signal that receives is detected, the backup information in the detected light signal is sent to described optical line terminal module; Satisfy switching condition if detect, notify described optical line terminal module to switch to and main use state, wherein, described switching condition comprises: light signal unusually, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
2, optical network device according to claim 1 is characterized in that, described optical network unit module also is used for if succeed in registration, notifying described optical line terminal module to enter stand-by state to the registration of described opposite end optical network device; If registration failure notifies described optical line terminal module to enter the main state of using.
3, optical network device according to claim 1 is characterized in that, described backup information comprises one or more combinations of ranging information, service configuration information and running state information.
4, a kind of optical network system is characterized in that, comprising: user side optical network device, optical branching device and at least two network side optical network devices, and described user side optical network device is connected with the user-side port of described optical branching device by optical fiber; Each network side optical network device is connected to described optical branching device by at least two optical fiber, wherein, is connected to the network-side port of described optical branching device by first optical fiber, is connected to the user-side port of described optical branching device by second optical fiber, wherein:
The first network side optical network device in described at least two network side optical network devices, be used for receiving the light signal that carries backup information that the second network side optical network device sends by described second optical fiber, the light signal that receives is detected, if satisfy switching condition, utilize described backup information to switch to the main state of using from stand-by state, wherein, described switching condition comprises: light signal is unusual, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
5, optical network system according to claim 4, it is characterized in that, the described first network side optical network device comprises: optical network unit module and optical line terminal module, described optical network unit module and described optical line terminal module couple, described optical network unit module is connected with the user-side port of described optical branching device by described second optical fiber, described optical line terminal module is connected with the network-side port of described optical branching device by described first optical fiber, wherein:
Described optical network unit module, be used for receiving the light signal that carries backup information that the described second network side optical network device sends by described second optical fiber, the light signal that receives is detected, the backup information in the detected light signal is sent to described optical line terminal module; Satisfy switching condition if detect, notify described optical line terminal module to switch to and main use state, wherein, described switching condition comprises: light signal unusually, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
6, optical network system according to claim 5 is characterized in that, described optical network unit module also is used for if succeed in registration, notifying described optical line terminal module to enter stand-by state to described second network side optical network device registration; If registration failure notifies described optical line terminal module to enter the main state of using.
According to each described optical network system of claim 4 to 6, it is characterized in that 7, described backup information comprises one or more combinations of ranging information, service configuration information and running state information.
8, a kind of method for exchanging optical network equipment is characterized in that, described optical network device is connected with the network-side port of optical branching device by first optical fiber, and is connected with the user-side port of described optical branching device by second optical fiber, and described method comprises:
First optical network device receives the light signal that carries backup information that second optical network device sends by described second optical fiber;
Described first optical network device detects the light signal that receives, if satisfy switching condition, utilize described backup information to switch to the main state of using from stand-by state, wherein, described switching condition comprises: light signal is unusual, comprise one or more combinations of switching order in the data exception in the light signal and the light signal.
9, method according to claim 8 is characterized in that, receives by described second optical fiber at described first optical network device before the light signal that carries backup information of second optical network device transmission, also comprises:
Described first optical network device is registered to described second optical network device;
If succeed in registration, described first optical network device enters stand-by state.
10, according to Claim 8 or 9 described methods, it is characterized in that described backup information comprises one or more combinations of ranging information, service configuration information and running state information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810141748 CN101667862A (en) | 2008-09-01 | 2008-09-01 | Optical network system, optical network equipment and exchanging method thereof |
| PCT/CN2009/073488 WO2010022647A1 (en) | 2008-09-01 | 2009-08-25 | Optical network system, optical network device and its switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810141748 CN101667862A (en) | 2008-09-01 | 2008-09-01 | Optical network system, optical network equipment and exchanging method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101667862A true CN101667862A (en) | 2010-03-10 |
Family
ID=41720832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810141748 Pending CN101667862A (en) | 2008-09-01 | 2008-09-01 | Optical network system, optical network equipment and exchanging method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101667862A (en) |
| WO (1) | WO2010022647A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140920A1 (en) * | 2010-08-11 | 2011-11-17 | 华为技术有限公司 | Method, system and optical network unit for synchronizing data |
| CN104253707A (en) * | 2013-06-28 | 2014-12-31 | 上海斐讯数据通信技术有限公司 | Master disk and standby disk multicast service synchronizing method |
| CN104618021A (en) * | 2014-12-29 | 2015-05-13 | 北京华为数字技术有限公司 | Optical fiber based data transmission method, device and system |
| WO2015131569A1 (en) * | 2014-10-17 | 2015-09-11 | 中兴通讯股份有限公司 | Cross-network-element protection processing method, protection method, apparatus and system in passive optical network |
| CN106791730A (en) * | 2017-01-20 | 2017-05-31 | 东华大学 | It is a kind of to realize the optical transmitter protection system that active/standby light path intelligently switches |
| CN109951226A (en) * | 2019-04-04 | 2019-06-28 | 南京杰德科技有限公司 | Optical fiber other end light device device connection status detection and method |
| WO2023011154A1 (en) * | 2021-07-31 | 2023-02-09 | 华为技术有限公司 | Optical communication system, vehicle and industrial optical network |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110446125B (en) * | 2019-08-27 | 2024-05-24 | 成都华跃科技有限公司 | Optical network system, optical path switching method, optical switching instruction issuing method and optical branching device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859811B (en) * | 2006-03-15 | 2011-02-02 | 华为技术有限公司 | Passive optical network system and its service protective method |
| KR100825745B1 (en) * | 2006-11-16 | 2008-04-29 | 한국전자통신연구원 | Passive optical network(pon) comprising optical link protection apparatus and method of protecting optical link in the same pon |
| KR100833504B1 (en) * | 2006-12-05 | 2008-05-29 | 한국전자통신연구원 | A apparatus and method for partial duplex protection switching by using single splitter in pon |
| CN101150367B (en) * | 2007-11-08 | 2010-09-29 | 杭州华三通信技术有限公司 | A backup method and device for passive optical network OLT device |
-
2008
- 2008-09-01 CN CN 200810141748 patent/CN101667862A/en active Pending
-
2009
- 2009-08-25 WO PCT/CN2009/073488 patent/WO2010022647A1/en active Application Filing
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140920A1 (en) * | 2010-08-11 | 2011-11-17 | 华为技术有限公司 | Method, system and optical network unit for synchronizing data |
| US9106332B2 (en) | 2010-08-11 | 2015-08-11 | Huawei Technologies Co., Ltd. | Data synchronization method and system, and optical network unit |
| CN104253707A (en) * | 2013-06-28 | 2014-12-31 | 上海斐讯数据通信技术有限公司 | Master disk and standby disk multicast service synchronizing method |
| CN104253707B (en) * | 2013-06-28 | 2019-06-07 | 上海斐讯数据通信技术有限公司 | A kind of master and backup discs multicast service synchronous method |
| WO2015131569A1 (en) * | 2014-10-17 | 2015-09-11 | 中兴通讯股份有限公司 | Cross-network-element protection processing method, protection method, apparatus and system in passive optical network |
| CN105577335A (en) * | 2014-10-17 | 2016-05-11 | 中兴通讯股份有限公司 | PON (Passive Optical network) cross-network-element protection processing method and device and protection method, device and system |
| CN104618021A (en) * | 2014-12-29 | 2015-05-13 | 北京华为数字技术有限公司 | Optical fiber based data transmission method, device and system |
| CN104618021B (en) * | 2014-12-29 | 2017-04-19 | 北京华为数字技术有限公司 | Optical fiber based data transmission method, device and system |
| CN106791730A (en) * | 2017-01-20 | 2017-05-31 | 东华大学 | It is a kind of to realize the optical transmitter protection system that active/standby light path intelligently switches |
| CN109951226A (en) * | 2019-04-04 | 2019-06-28 | 南京杰德科技有限公司 | Optical fiber other end light device device connection status detection and method |
| WO2023011154A1 (en) * | 2021-07-31 | 2023-02-09 | 华为技术有限公司 | Optical communication system, vehicle and industrial optical network |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010022647A1 (en) | 2010-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101667862A (en) | Optical network system, optical network equipment and exchanging method thereof | |
| US7835268B2 (en) | Optical termination system | |
| EP2393237B1 (en) | Passive optical network protection method, master-standby switch control device and system | |
| CN101414878B (en) | Method and apparatus for implementing trunk optical fiber rapid protection switching of EPON system | |
| EP2200191B1 (en) | A method, a system and an apparatus for protection in a long reach passive optical network | |
| KR101100775B1 (en) | Failsafe optical splitter and method to isolate faults in a passive optical network | |
| JP6094666B2 (en) | Optical network system and optical communication method | |
| CN101237254A (en) | Optical fiber protection inverse device, method and passive optical network system with the device | |
| CN102386970A (en) | Optical network unit (ONU) device of EPON (Ethernet Passive Optical Network) system and protection switching method for same | |
| KR20070111396A (en) | Station side transmission unit, operation control method for station side transmission unit, and optical network using station side transmission unit | |
| CN102035597B (en) | Method, device and system for switching between main terminal and standby terminal of passive optical network (PON) | |
| US10009137B2 (en) | Optical communication system, station-side device, subscriber device, and optical communication method | |
| WO2011126416A1 (en) | Method and arrangements for protection in an optical network | |
| CN101005317A (en) | Method and device for detecting up transmitting error and protecting passive light network terminal | |
| JP2008160583A (en) | Redundancy optical access system | |
| CN101562480A (en) | Optical access network, and method, system and apparatus for backuping optical line terminal | |
| JP2010034877A (en) | Redundant transmission system in point-to-multipoint system | |
| CN102594444B (en) | A kind of method and system realizing full protection modes | |
| JP5335952B2 (en) | Redundant transmission system in point-multipoint system | |
| JP2012049711A (en) | Station side termination device and optical communication system | |
| CN101600128B (en) | ONU and method for achieving all-fiber protection switching | |
| CN101895797A (en) | Method and device for realizing all-fiber protection | |
| CN101515835A (en) | Method and device for backing up across-board optical port | |
| JP6345390B2 (en) | Optical switch module and optical switching device | |
| JP2014158236A (en) | PON system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100310 |