CN103701519A - Active/standby judging method for passive optical network - Google Patents
Active/standby judging method for passive optical network Download PDFInfo
- Publication number
- CN103701519A CN103701519A CN201310698597.7A CN201310698597A CN103701519A CN 103701519 A CN103701519 A CN 103701519A CN 201310698597 A CN201310698597 A CN 201310698597A CN 103701519 A CN103701519 A CN 103701519A
- Authority
- CN
- China
- Prior art keywords
- optical
- optical interface
- interface
- primary
- link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Small-Scale Networks (AREA)
Abstract
The invention provides an active/standby judging method for a passive optical network, and is used for judging an active optical interface and a standby optical interface in optical link protection of the passive optical network. The method comprises the following steps: receiving an optical link protection instruction by using an optical circuit terminal, determining a protection group and detecting a scene state; acquiring corresponding parameter information of an optical link in the protection group according to the detected scene state; calculating the active preferred value of each optical interface according to corresponding obtained parameter information, and selecting the active optical interface and the standby optical interface according to a calculated result; updating the active preferred value of each optical interface in the protection group in real time according to the state change of the optical link, and selecting the active optical interface and the standby optical interface according to the practical state of the link. In the method, during selection of the active optical interface and the standby optical interface, the active preferred value is calculated according to corresponding parameter change of the practical state of the link to select a most appropriate and stable active optical link, so that optical link switching times are reduced to the maximum extent, and safe and reliable optical link communication is provided.
Description
Technical field
The present invention relates to passive optical network technique, relate in particular to a kind of standby usage decision method of EPON.
Background technology
At present, EPON (Passive Optical Network, PON) technology is the broadband optical access technology based on optical fiber, optical network system is by optical line terminal (Optical Line Terminal, OLT), Optical Distribution Network (Optical Distribution Network, ODN) and optical network unit (Optical Network Unit, ONU) form, because PON system has high bandwidth, high efficiency, large coverage, the abundant many merits that waits of user interface, it is broadband that most of operators adopt this technology to realize Access Network business, synthesization transformation, extensive layout, obtaining a large amount of users experiences.In passive optical network, for providing the reliability of optical link to use optical link when protection, the selection of primary optical link is most important.
Yet; the general system of supporting optical link to protect just realizes merely this function; the interruption of customer service when supporting that optical link defencive function is opened; and in use; the alternative condition of primary, spare optical interface is considered insufficient and caused the switching repeatedly of the primary, spare optical interface of system; make system to the support of business off and on, thereby cause user's data security not obtain effective guarantee.
Summary of the invention
In view of this, the invention provides and a kind ofly can select optimal link to complete the standby usage decision method of the EPON of optical link defencive function according to Link State.
A standby usage decision method for EPON, it adjudicates primary optical interface and standby optical interface for the optical link protection at EPON, and the standby usage decision method of described EPON comprises the following steps:
Optical line terminal receives optical link protection instruction and determines protection group and detect scene state;
According to detected scene state, obtain the relevant parameter information of optical link in protection group;
According to obtained relevant parameter information, calculate the primary preferred value of each optical interface and select primary optical interface and standby optical interface according to result of calculation;
According to the primary preferred value of each optical interface in optical link state variation real-time update protection group and according to upgrading result, select primary optical interface and standby optical interface.
Compared with prior art, in EPON standby usage decision method provided by the invention, main, the selective basis link virtual condition of standby optical interface is calculated the primary preferred value of each optical interface to select the optimal primary optical link of stablizing, in running, all Link States are carried out to automatic monitoring simultaneously, and select whether to lead according to link-state change, the switching of standby PON mouth, thereby reduce to greatest extent optical link switching times, safety is provided, reliable optical link path, maintenance customer's data security, conscientiously reach the object of optical link protection.
Accompanying drawing explanation
Fig. 1 is the flow chart of the standby usage decision method of EPON provided by the invention.
Fig. 2 is that in the protection group in Fig. 1, each PON interface status information is collected flow chart.
Fig. 3 is the judgement flow chart of primary, spare PON mouth in the protection group in Fig. 1.
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1; the standby usage decision method of a kind of EPON that it provides for embodiment of the present invention; the standby usage decision method of described EPON is used at EPON (Passive Optical Network; PON) in optical link protection, select primary optical interface and standby optical interface, the standby usage decision method of described EPON comprises the following steps:
S100: receive optical link protection instruction and determine protection group and detect scene state;
S200: the relevant parameter information of obtaining each optical link in protection group according to detected scene state;
S300: calculate the primary preferred value of each optical interface and select primary optical interface and standby optical interface according to result of calculation according to obtained relevant parameter information;
S400: select primary optical interface and standby optical interface according to the primary preferred value of each optical interface in optical link state variation real-time update protection group and according to upgrading result.
In step S100, comprise the following steps:
S110: network management configuration optical link is protected and determined protection group;
S120: judgement PON interface is to belong to protection group, if so, enters step S130, if not, finishes;
S130: send the PON Link State request of protection group and obtain this configuration scene state.
In step S110; support all PON interfaces of same optical link defencive function to form an optical link PON protection group; have unique group ID; network management system configuration optical link protection instruction has indicated the unique protection group ID of system; optical line terminal (Optical Line Terminal, OLT) receives the instruction of configuration optical link defencive function from network management system.
Be understandable that; if newly increased PON interface in protection group ID, the PON interface newly increasing also can enter optical link defencive function, thus the optical link defencive function that can provide by the mode of progressively upgrading; give full play to optical link defencive function, reduce manual intervention.
In step S130; when OLT receives the instruction of configuration optical link defencive function; there are two kinds of possibility application scenarioss and detect to distinguish two kinds of application scenarioss by oneself in system; the first scene is system initial configuration optical link defencive function, and the second scene is after system upgrade, to configure optical link defencive function.When system is the first scene, under two or more PON links of support optical link defencive function, there is no the mandate of ONU, when system is the second scene, under two or more PON links of support optical link defencive function, there is the mandate of ONU.
If system is power up; the instruction of network management system configuration optical link defencive function is issued to OLT system all the time in this PON before ONU authorized order; can decision-making system be now the first scene; if not power up; whether have the mandate of ONU online exist, be if so, judged to be the second scene if continuing to detect under all PON mouths of supporting optical link defencive function; if not, be judged to be the first scene.Be appreciated that, the first scene can be carried out primary and backup optical interface selection according to engineering layout, assurance is obtained optimum optical link condition and is carried out user's access fast, the second scene more pays attention to guarantee the impact on existing online user when configuration change, to carry out key parameter and relatively decide the selection of primary, spare optical interface, to reduce to minimum to customer impact, the user who promotes client experiences.
When PON OLT receives the protection group ID instruction that network management system issues; first each PON OLT in protection group ID gives tacit consent to own state in protection group is state undetermined; the group ID of simultaneously take represents as keyword; attach the PON interface number information of oneself; to other PON OLT in system, send the broadcasting packet of PON Link State request; the broadcasting packet sending can be received by all PON OLT in system, and other PON OLT in protection group ID form response message by the PON Link State of self and respond in the mode of broadcast.If there is initial configuration mark in the broadcasting packet issuing, show when this configuration information is system electrifying startup to issue, OLT is in the first scene, otherwise OLT is in the second scene.
In step S200; the relevant parameter information of obtaining when system is the first scene comprises: in the priority of all PON interfaces in protection group ID, protection group ID in the business dish information in place at all PON interfaces place, protection group ID the SFP of all PON interfaces (Small Formfactor Pluggable, SFP) whether optical module in place, whether the optical fiber of all PON interfaces connects and access in protection group ID.Be understandable that; network management system can be specified the priority of PON interface in optical link protection configuration; if network management system is specified the priority of PON interface in optical link protection configuration; under equal link condition; the forward PON interface of priority of network management system appointment will become primary PON mouth; if webmaster is not specified sequencing, each PON interface has identical priority.
The relevant parameter information of obtaining when system is the second scene comprises outside all parameter informations that the first scene need obtain, and also further need to obtain the presence of authorizing ONU under all PON interfaces in the primary, spare state of PON OLT in protection group and protection group ID.
Refer to Fig. 2, in step S200, comprise the following steps:
S210: the Vender information that reads optical module judges that whether optical module is in place, if so, enters step S220, if not, enters step S220a;
S220: receipts light inefficacy (Loss of Singal, the LOS) signal that detects optical module judges whether optical fiber accesses, and if so, enters step S230, if not, enters step S230a;
S220a: send this PON mouth optical module state information response message not in place to all PON mouths in optical link protection group, and enter step S260;
S230: judge whether this configuration is the second scene, if so, enters step S240, if not, enters step S230a;
S230a: send the in place and optical fiber of this PON interface optical module without the response message of access to all PON mouths in optical link protection group, and enter step S260;
S240: read ONU authorization list in PON interface to judge whether this PON interface has ONU to authorize, and if so, enters step S250, if not, enters step S240a;
S240a: to all PON mouths in optical link protection group send that this PON mouth optical module is in place, optical fiber access and the response message of authorizing without ONU, and enter step S260;
S250: the ONU reading in PON interface shows online to obtain the number of online ONU;
S250a: to all PON mouths in optical link protection group send that this PON interface optical module is in place, optical fiber access, ONU authorizes and the response message of online ONU number, and enters step S260;
S260: judge whether all PON link-state informations have collected, if so, optical link protection information is collected and finished and enter step S300, if not, enters step S270;
S270: send PON Link State request message the time delay of protection group ID, optical link protection information is collected and finished and enter step S300.
In step S210, by I2C bus, read the Vender information twice of optical module, and whether effectively judge that according to Vender information whether optical module is in place, when Vender information is effective, judgement optical module is in place.
In step S220, by the universal I/O pin of CPU, read the LOS pin signal of optical module, if LOS signal is high, show LOS set, the PON interface that is PON OLT is up without receiving light, show not access of optical fiber, the response message that now sends PON link-state information show that this PON Interface status is uncertain, optical module is in place and optical fiber without access, enter afterwards step S260.
In step S230, judgement scene method is with to detect scene status method in step S100 identical.
In step S250, obtain the presence of authorizing ONU under PON interface, by reading LOS and the LOSi of PON framing chip, judge, according to G.984.3 with 802.3ah standard, PON framing chip indication LOS shows under this PON interface that all mandate ONU are in presence not, if PON framing chip is not indicated LOS, need further to detect the LOSi state of all mandate ONU under this PON interface.According to G.984.3 with 802.3ah standard, PON framing chip indication LOSi shows that this ONU upward signal loses, and can be judged to be this ONU not online.
In step S260, according to the configuration optical link protection group id information receiving in step S100, all PON link-state informations that scanning receives, judge whether to collect complete.
In step S270, in protection group ID, all PON link informations are not collected under full situation, again send to organize ID and are after the broadcasting packet time delay of the PON Link State request of closing key index, and PON link-state information gatherer process finishes.Being understandable that, is the message that prevents loss, and also prevents that, due to the sub-frame of cross-system, each system back message using has delay, so need to repeatedly send with time delay to wait for guaranteeing whether can not judge collection by accident completes, in present embodiment, the time that time delay is waited for is 2 seconds.
Be understandable that, at step S210, to the process of step S250a, each PON interface receives the link-state information of other PON mouths in protection group.For between support disc or the optical link defencive function of the sub-frame of cross-system, the information exchange that this locality obtains is crossed management channels and to configuration, is supported all OLT broadcast transmissions of this optical link defencive function, thereby all PON interfaces can be shared the link-state information of other PON interfaces.
Refer to Fig. 3, in step S300, comprise the following steps:
S310: judge in protection group ID whether had primary PON mouth, if so, enter step S370; If not, enter step S320;
S320: the primary preferred value that calculates each PON interface in protection group;
S330: judge the whether unique maximum of primary preferred value of this PON interface, if so, enter step S340, if not, enter step S350;
S340: it is primary PON mouth that this PON interface is set, simultaneously primary, spare PON mouth judgement finishes;
S350: judge whether this PON interface has precedence over other PON interfaces in protection group with identical primary preferred value, if so, enters step S340, if not, enters step S360;
S360: it is standby PON mouth that this PON interface is set, simultaneously primary, spare PON mouth judgement finishes.
In step S310, if there is a primary PON mouth in protection group group ID, this PON enters at once standby PON mouth and does not need to adjudicate, otherwise, according to each link information, calculate the primary preferred value of all PON interfaces in this group ID.
In step S320; calculate the primary preferred value pon_info of each PON interface in protection group ID; the PON OLT of protection group ID is to each the PON interface difference parameters pon_info in protection group; this pon_info is that type is the array of double byte integer; each element of this array is preserved the numerical value calculating by the PON interface link state information message receiving; this numerical value is called the primary PON interface preferred value of certain PON mouth, and the size of this parameter has determined that this PON interface becomes the priority of primary PON mouth.
Primary PON interface preferred value parameter p on_info is calculated as follows: for a PON interface PONi in protection group ID, (1) if do not receive the link-state information message of this PON interface, show that this PON interface place business dish is not in groove position, this pon_infoi of primary preferred value of this PON interface is 0, the calculating of pon_infoi finishes, otherwise calculate, continues; (2) if the optical module of PONi interface is in place, the extreme higher position 1 of the primary preferred value of this PON interface, pon_infoi.bit15 puts 1; If the optical module of PONi interface is not in place, pon_infoi.bit15 sets to 0, and the calculating of pon_infoi finishes, otherwise calculate, continues; (3) if the access of the optical fiber of PONi interface is normal, the inferior high position 1 of the primary preferred value of this PON interface, pon_infoi.bit14 puts 1; If the optical fiber of PONi interface is access not, pon_infoi.bit14 sets to 0, and the calculating of pon_infoi finishes, otherwise calculate, continues; (4) if there is the ONU of mandate online in PON interface, time time high position 1 of the primary preferred value of this PON interface, pon_infoi.bit13 puts 1, otherwise pon_infoi.bit13 sets to 0 and the calculating of pon_infoi finishes, otherwise calculate, continues; (5) if online mandate ONU number is N in PON interface, according to the power budget of the design specification of PON and optical link, maximum light proportion by subtraction is 1:128, so the value of N may be only 0 to 128, the primary preferred value of this PON interface adds N, and the bit0 to bit6 of pon_infoi is N for authorizing ONU number online.
In step S330, in this group ID, the primary preferred value of all PON interfaces is that peaked PON interface will become primary PON mouth, and other become standby PON mouth.For example: a PONi interface, if the business dish at place is in place, and the optical module of PON interface is in place, but this optical module is inserted optical fiber, the pon_infoi value of this PON interface be 0x8000 (16 systems, bit15 puts 1; If another PONj dish is in place, optical module is in place, optical fiber inserts, and there are 18 ONU online, the value of pon_infoj is 0xe012 (16 system), and 0xe012 is metric 57362, and 0x8000 is metric 32768,0xe012>0x8000, a so rear PON interface has higher priority.
In step S350, if there is the primary preferred value of two or more PON interfaces simultaneously, be maximum, the priority setting of PON mouth of network management system setting of take wherein has prepreerence PON mouth as primary PON mouth, and other are standby PON mouth.Be understandable that, the setting of network management system is manually set as required.
In step S360, all standby PON mouths are closed the luminous end of SFP optical module, retain the receipts light end of SFP optical module, and optical link is monitored.
In step S400, the state variation of monitoring PON link according to the Link State calculation of parameter changing and upgrade the primary preferred value of each optical interface.When occurring that optical module inserts/extracts, the insertion of optical fiber/extract information, the link-state change of other PON interfaces in reception group ID when sending the interior all PON interfaces of local PON interface link variation broadcasting packet notice group ID, and calculate to upgrade the primary preferred value pon_info of PON interface, computational methods are with step 320.When the PON link of standby mouthful sends variation, in protection group ID, other PON interfaces upgrade the primary preferred value pon_info that changes PON interface.
Be understandable that, when primary PON interface is unavailable, in protection group ID, other PON interfaces will be selected primary PON mouth according to step S330, complete the switching of primary, spare PON mouth.
In EPON standby usage decision method provided by the invention, detect actual network state and network settings situation, PON interface optimum in selective light link protection becomes primary PON mouth, in running, all Link States are carried out to automatic monitoring simultaneously, when changing appears in Link State, calculate in real time the primary preferred value of each PON mouth to upgrade spare interface priority, and select whether to lead according to link-state change, the switching of standby PON mouth, guarantee can select optimal standby optical interface as primary optical interface when primary optical interface is unavailable, it is the most stable that thereby the system of assurance operates in, on the most reliable optical link, reduce because the interruption of the customer service that optical link fault causes or interrupted, improve the reliability of PON system, user's data security is provided, improving customer service experiences.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change and distortion all should belong to the protection range of the claims in the present invention.
Claims (9)
1. the standby usage decision method of an EPON; it is at EPON (Passive Optical Network; PON) in optical link protection, adjudicate primary optical interface and standby optical interface, the standby usage decision method of described EPON comprises the following steps:
Optical line terminal receives optical link protection instruction and determines protection group and detect scene state;
According to detected scene state, obtain the relevant parameter information of optical link in protection group;
According to obtained relevant parameter information, calculate the primary preferred value of each optical interface and select primary optical interface and standby optical interface according to result of calculation;
According to the primary preferred value of each optical interface in optical link state variation real-time update protection group and according to upgrading result, select primary optical interface and standby optical interface.
2. the standby usage decision method of EPON as claimed in claim 1, is characterized in that, the scene state in detecting scene state step comprises the first scene and the second scene, in described detection scene state step, comprises the following steps:
Detect in optical link protection group whether have mandate optical network unit in optical link, if so, scene state is the second scene, and if not, scene state is the first scene.
3. the standby usage decision method of EPON as claimed in claim 2, is characterized in that, in obtaining the relevant parameter information step of optical link protection group, comprises the following steps:
The relevant parameter information of obtaining when scene state is the first scene comprises: in protection group, whether the optical fiber connection whether in place and each optical interface of the optical module of the priority of each optical interface, the corresponding business dish of each optical interface information in place, each optical interface accesses;
The relevant parameter information that scene is obtained when scene state is the second scene comprises: whether the optical module of the priority of all optical interfaces in protection group, the corresponding business dish of each optical interface information in place, each optical interface is in place, the optical fiber of each optical interface connects the presence that whether accesses, authorizes optical network unit under the primary, spare state of optical line terminal in protection group and each optical interface.
4. the standby usage decision method of EPON as claimed in claim 1, is characterized in that, calculate the primary preferred value of each optical interface and according to result of calculation, select primary optical interface and standby optical interface step in comprise the following steps:
Judge in protection group whether have a primary optical interface, if so, each optical interface is standby optical interface, if not, calculates the primary preferred value of each optical interface.
5. the standby usage decision method of EPON as claimed in claim 4; it is characterized in that; calculating the primary preferred value of each optical interface and according to result of calculation, selecting in the step of primary optical interface and standby optical interface, the optical interface of the primary preferred value maximum of all optical interfaces that calculate in protection group is set to primary optical interface.
6. the standby usage decision method of EPON as claimed in claim 5; it is characterized in that; optical line terminal receives the instruction of optical link protection group and comprises the priority of specifying optical interface in optical link protection configuration; if there is the primary preferred value of two or more optical interfaces identical and for maximum simultaneously, the optical interface priority setting of appointment of take wherein has prepreerence optical interface as primary optical interface.
7. the standby usage decision method of EPON as claimed in claim 6, is characterized in that, in real-time update protection group, in the primary preferred value step of each optical interface, comprises the following steps:
Each optical interface sends separately link change state parameter to other optical interfaces in protection group when the state variation of corresponding optical link;
The Link State parameter that receives other optical interfaces in protection group changes;
According to the Link State calculation of parameter changing and upgrade the primary preferred value of each optical interface.
8. the standby usage decision method of EPON as claimed in claim 7; it is characterized in that; in according to optical link state variation real-time update protection group, in the primary preferred value step of each optical interface, when primary optical interface is unavailable, in this group, the optical interface of maximum primary preferred value is set to primary optical interface.
9. the standby usage decision method of EPON as claimed in claim 8, it is characterized in that, if there is the primary preferred value of a plurality of optical interfaces identical and for maximum simultaneously, the optical interface priority setting of appointment of take wherein has prepreerence optical interface as primary optical interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698597.7A CN103701519B (en) | 2013-12-18 | 2013-12-18 | The standby usage decision method of EPON |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310698597.7A CN103701519B (en) | 2013-12-18 | 2013-12-18 | The standby usage decision method of EPON |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103701519A true CN103701519A (en) | 2014-04-02 |
| CN103701519B CN103701519B (en) | 2016-05-04 |
Family
ID=50362931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310698597.7A Active CN103701519B (en) | 2013-12-18 | 2013-12-18 | The standby usage decision method of EPON |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103701519B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734773A (en) * | 2015-04-16 | 2015-06-24 | 上海斐讯数据通信技术有限公司 | C-type optical link protection switching optimization method of GPON (Gigabit Passive Optical Network) |
| CN111343520A (en) * | 2020-02-27 | 2020-06-26 | 通鼎互联信息股份有限公司 | PON uplink data transmission method, system and device and PON system |
| CN111953412A (en) * | 2020-08-07 | 2020-11-17 | 苏州浪潮智能科技有限公司 | Method and device for realizing optical information synchronization of optical module switch |
| CN115001581A (en) * | 2022-06-16 | 2022-09-02 | 中国联合网络通信集团有限公司 | Optical attenuation processing method and equipment of optical network unit and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150367A (en) * | 2007-11-08 | 2008-03-26 | 杭州华三通信技术有限公司 | A backup method and device for passive optical network OLT device |
| CN101854566A (en) * | 2009-04-02 | 2010-10-06 | 华为技术有限公司 | Passive optical network protection method and active/standby switch device and system |
| CN102025551A (en) * | 2010-12-23 | 2011-04-20 | 中兴通讯股份有限公司 | Method and device for switching master device to backup device based on access gateway |
| WO2012019458A1 (en) * | 2010-08-11 | 2012-02-16 | 中兴通讯股份有限公司 | Ranging method and system in passive optical network |
-
2013
- 2013-12-18 CN CN201310698597.7A patent/CN103701519B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150367A (en) * | 2007-11-08 | 2008-03-26 | 杭州华三通信技术有限公司 | A backup method and device for passive optical network OLT device |
| CN101854566A (en) * | 2009-04-02 | 2010-10-06 | 华为技术有限公司 | Passive optical network protection method and active/standby switch device and system |
| WO2012019458A1 (en) * | 2010-08-11 | 2012-02-16 | 中兴通讯股份有限公司 | Ranging method and system in passive optical network |
| CN102025551A (en) * | 2010-12-23 | 2011-04-20 | 中兴通讯股份有限公司 | Method and device for switching master device to backup device based on access gateway |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734773A (en) * | 2015-04-16 | 2015-06-24 | 上海斐讯数据通信技术有限公司 | C-type optical link protection switching optimization method of GPON (Gigabit Passive Optical Network) |
| CN104734773B (en) * | 2015-04-16 | 2019-10-01 | 上海斐讯数据通信技术有限公司 | GPON network C class optical link pretection switch optimization method |
| CN111343520A (en) * | 2020-02-27 | 2020-06-26 | 通鼎互联信息股份有限公司 | PON uplink data transmission method, system and device and PON system |
| CN111953412A (en) * | 2020-08-07 | 2020-11-17 | 苏州浪潮智能科技有限公司 | Method and device for realizing optical information synchronization of optical module switch |
| CN111953412B (en) * | 2020-08-07 | 2022-03-08 | 苏州浪潮智能科技有限公司 | Method and device for realizing optical information synchronization of optical module switch |
| CN115001581A (en) * | 2022-06-16 | 2022-09-02 | 中国联合网络通信集团有限公司 | Optical attenuation processing method and equipment of optical network unit and storage medium |
| CN115001581B (en) * | 2022-06-16 | 2023-05-16 | 中国联合网络通信集团有限公司 | Optical attenuation processing method, equipment and storage medium of optical network unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103701519B (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108964756B (en) | Fault detection method and device of optical distribution network and passive optical network system | |
| US9712241B2 (en) | Communication system, master station device, slave station device, control unit, and communication control method | |
| US10735098B2 (en) | Latency control in a passive optical network | |
| US20160173194A1 (en) | Fiber Link Recognition Method, Device, and System | |
| CN104639468A (en) | Optical port adaptive Ethernet switch and adaptive method thereof | |
| US20080056714A1 (en) | Method and Apparatus for Obtaining an Optical Power Level in a Pon Network | |
| CN103701519B (en) | The standby usage decision method of EPON | |
| CN101345581B (en) | Fault location method and system for passive optical network | |
| CN102725978A (en) | Improvements in optical networks | |
| CN106301837A (en) | EPON alarm detection method and device | |
| WO2015070435A1 (en) | Service deployment method, apparatus and network device | |
| CN104935378A (en) | Optical fiber link detection system and optical fiber link detection method for passive optical network | |
| CN102263587B (en) | The optical port changing method and system of optical network unit | |
| CN103763020B (en) | ONU real-time detection management method and optical line terminal equipment in WDM-PON system | |
| WO2012083757A1 (en) | Method and device for negotiating rate of optical module | |
| US20230087446A1 (en) | Network monitoring method, electronic device and storage medium | |
| US20140248051A1 (en) | Power Save Mode for Lightpaths | |
| KR20180128558A (en) | Optical repeater optical core monitoring system using OTDR | |
| CN104779994B (en) | The guard method of ethernet passive optical network and device | |
| CN109995428A (en) | The optical path detection method and device of passive optical network | |
| US11719890B2 (en) | Passive optical couplers having passive optical activity indicators and methods of operating the same | |
| US11611394B1 (en) | Systems and methods for mapping optical connections in a fiber distribution hub of a passive optical network | |
| US11962401B2 (en) | Reducing connection validation (CV) time in an optical node | |
| CN104618257A (en) | Traffic control method, optical network unit (ONU) and optical line terminal (OLT) device | |
| CN106656265B (en) | Mixed medium communication network and uninterrupted communication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |