CN102045105A - Fault active detection and isolation method and optical line unit - Google Patents
Fault active detection and isolation method and optical line unit Download PDFInfo
- Publication number
- CN102045105A CN102045105A CN2009101107715A CN200910110771A CN102045105A CN 102045105 A CN102045105 A CN 102045105A CN 2009101107715 A CN2009101107715 A CN 2009101107715A CN 200910110771 A CN200910110771 A CN 200910110771A CN 102045105 A CN102045105 A CN 102045105A
- Authority
- CN
- China
- Prior art keywords
- optical
- optical module
- transmitting set
- unusual
- module
- 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
Landscapes
- Optical Communication System (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a fault active detection and isolation method and an optical line unit. The optical line unit comprises a passive optical network (PON) protocol processing and service processing chip and a light emitter, as well as a monitoring circuit used for detecting the real light emitting state of the light emitter, wherein one end of the monitoring circuit is connected with the light emitter, the other end of the monitoring circuit is connected with the passive optical network protocol processing and service processing chip, the monitoring circuit monitors the real light emitting state of the light emitter of an optical module and then sends detection results to the passive optical network protocol processing and service processing chip, and the passive optical network protocol processing and service processing chip judges whether the optical module is abnormal or not according to the detection results and closes the abnormal optical module to perform isolation processing. The invention reduces the fault rate of a PON service and improves the operating stability of the PON service.
Description
Technical field
The invention belongs to the optical communication technique field, be specifically related to a kind of fault active detecting partition method and optical link unit.
Background technology
Fast development along with technological innovation, EPON (Passive Optical Network, PON) as a kind of broadband access technology of last kilometer, no matter be, the advantage than other broadband access technologys is all arranged in all many-sides such as cost, network engineering enforcement and maintenance, safety and multi-service supports.Passive optical network PON comprise Ethernet passive optical network (Ethernet Passive Optical Network, EPON) and gigabit passive optical network (Gigabit-capable Passive Optical Network, GPON).
See also illustrated in figures 1 and 2, Fig. 1 is the passive optical network PON structural representation, passive optical network PON comprises local side apparatus optical line terminal (Optical Line Terminal, OLT), near user side equipment optical link unit (Optical Network Unit, ONU), the passive optical splitter spare on the optical link and fibre circuit etc.Fig. 2 is an ONU device structure block diagram among the PON, and ONU equipment comprises PON protocol processes and Business Processing chip 201, optical module 202 and optical module power supply 203.Described optical module 202 comprises optical receiver, optical transmitting set and photoelectricity coupling/transducer.
Transmission direction from OLT to ONU is called down direction, and the transmission direction from ONU to OLT is called up direction.No matter be EPON or GPON, the down direction data all are to adopt broadcast mode to carry out, and all ONU can receive downlink data, do not belong to the data that send to oneself but filter out; The up direction data then are to adopt time division multiplexing mode that transmission medium is shared, and therefore, the control messages that each ONU is issued by down direction broadcasting according to OLT is distributed to the time slot of oneself and carried out the data transmission.At synchronization, can only there be an ONU can send the data of reaching the standard grade effectively all the time, the situation that a plurality of ONU send upstream data simultaneously can not occur, otherwise just conflict occur.Under the normal condition, the above-mentioned PON network operation does not have problem.But, the optical module sending function fault that optical module causes owing to aging or environmental abnormality appears in case certain ONU occurs, occur as long hair light etc. unusually the time, the upstream data that is in other ONU under the same OLT PON port with this faulted ONU will be had a strong impact on, gently then cause each ONU uplink error code, heavy then cause other ONU the registration difficulty to occur, fluctuation of service appears in whole PON network, or fault such as service disconnection occurs.
Chinese patent application number is 200610034854.7; denomination of invention is " a kind of maintaining method of EPON and a system thereof "; Chinese patent application number is 200610061740.1; denomination of invention number is 200610000939.3 for " detecting the method for faulted ONU among the PON " and Chinese patent application; denomination of invention cooperates to detect for the PON network provides some OLT and ONU for the patent of " detecting the up method and apparatus wrong and the protection passive light network terminal that sends "; there is following distinct disadvantage in the method for getting rid of long hair light faulted ONU but the inventor finds existing disclosed technical scheme under study for action:
(1) can not detect at any time and get rid of, detection is a kind of remedial measure with eliminating, and long hair light faulted ONU has produced fatal influence to the business of PON network, and is irretrievable to the influence that the user produces;
(2) can not detect and fix a breakdown having 2 or 2 above long hair light faulted ONUs in the network simultaneously;
(3) long luminance ONU may be in login state and not registered state on OLT, and OLT can't manage by means such as operation management maintains, also just can't close long hair light faulted ONU.
Summary of the invention
The main technical problem to be solved in the present invention is to provide a kind of fault active detecting partition method and optical link unit, the failure rate of minimizing PON Network, the stability of raising PON Network operation.
For solving the problems of the technologies described above, the invention provides a kind of fault active detecting partition method, be used for passive optical network, described method comprises:
Detect the actual luminance of the optical transmitting set of optical module;
Judge according to testing result whether optical module is unusual,, then close optical module if unusual.
In the embodiment of the invention, describedly judge according to testing result whether unusual step comprises optical module:
The time window of actual luminance of the optical transmitting set of optical module and optical line terminal authorized appropriation is compared;
Judge according to comparative result whether optical module is unusual.
In the embodiment of the invention, describedly judge according to comparative result whether unusual step comprises optical module:
When the optical transmitting set that detects optical module is in luminance outside the time window of optical line terminal authorized appropriation, judge further more whether its fluorescent lifetime outside time window surpasses one and preestablish time span, if surpass the described time span that preestablishes, judge that then optical module is unusual, close optical module.
In the embodiment of the invention, the described optical module step of closing comprises:
Passive optical network protocol is handled and the Business Processing chip sends power control signal, disconnects the power supply of the optical transmitting set of unusual optical module.
In the embodiment of the invention, the time window of described optical line terminal authorized appropriation comprises the transmission data zero hour and sends data time length; Send data and arrive the zero hour, it is luminous to open optical transmitting set, sends data; Send ED and arrive constantly, close optical transmitting set, stop to send data.
In the embodiment of the invention, the step of the actual luminance of the optical transmitting set of described detection optical module comprises:
Power supply to the optical transmitting set of optical module detects; Perhaps
Actual power to the optical transmitting set of optical module detects.
A kind of optical link unit, comprise passive optical network protocol processing and Business Processing chip and optical transmitting set, described optical link unit also comprises and is used for supervisory circuit that the actual luminance of optical transmitting set is detected, described supervisory circuit one end is connected with optical transmitting set, the other end handles with passive optical network protocol and the Business Processing chip is connected, described supervisory circuit detects the actual luminance of the optical transmitting set of optical module, sending testing result then handles and the Business Processing chip to passive optical network protocol, passive optical network protocol is handled and the Business Processing chip judges according to testing result whether optical module is unusual, if unusually then close optical module.
In the embodiment of the invention, described passive optical network protocol processing and Business Processing chip compare the time window of actual luminance of the optical transmitting set of optical module and optical line terminal authorized appropriation, judge according to comparative result whether optical module is unusual, if unusually then close optical module.
In the embodiment of the invention, described passive optical network protocol is handled and the Business Processing chip judges further whether its fluorescent lifetime outside time window surpasses one and preestablish time span, if surpass the described time span that preestablishes, judge that then optical module is unusual, close optical module.
In the embodiment of the invention, described supervisory circuit detects the power supply of the optical transmitting set of optical module; Perhaps the actual power to the optical transmitting set of optical module detects.
Compared with prior art, the embodiment of the invention is by the active detection of ONU and the mode of the ONU that detects the optical module failure light emission being carried out active isolation, eliminate in the PON network because the ONU optical module is in the influence that luminous disorder, failure state cause the PON business, reduce the failure rate of PON Network, improve the stability of PON Network operation.
Description of drawings
Fig. 1 is a PON network basic structure schematic diagram;
Fig. 2 is existing ONU structured flowchart;
A kind of ONU structured flowchart that Fig. 3 provides for the embodiment of the invention;
Fault active detecting partition method flow chart in a kind of PON network that Fig. 4 provides for the embodiment of the invention.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
Core concept of the present invention is: in real time a plurality of ONU among the PON are carried out actual luminance and detect, if the actual luminance of ONU is unusual, then close the optical module of unusual ONU, thereby isolate, avoid the PON business is impacted, thereby reduce the failure rate of PON Network, improve the stability of PON Network operation.
See also shown in Figure 3, the supervisory circuit 304 that a kind of ONU structured flowchart that Fig. 3 provides for the embodiment of the invention, ONU comprise PON protocol processes and Business Processing chip 301, optical module 302, optical module power supply 303 and be used for optical module optical transmitting set actual working state is detected.Described optical module 302 comprises optical receiver, optical transmitting set and photoelectricity coupling/transducer.ONU compared to existing technology, the embodiment of the invention partly increases supervisory circuit 304 in PON protocol processes and Business Processing.The luminance of the optical transmitting set of the optical module 302 of 304 couples of ONU of supervisory circuit detects, the signal of the actual transmit status of the optical transmitting set of reflection ONU optical module 302 is sent to PON protocol processes and Business Processing chip 301, PON protocol processes and Business Processing chip 301 authorize the fluorescent lifetime window to compare itself and OLT, and whether the actual luminance of optical transmitting set of judging this ONU optical module is in the time window of OLT authorized appropriation.If the luminance of the reality of optical transmitting set is luminous outside the time window of OLT authorized appropriation; think that then optical module 302 is unusual; the take the initiative power supply 303 of the optical transmitting set that disconnects optical module of PON protocol processes and Business Processing chip 301; fast this faulted ONU is opened from whole PON Network Isolation, thereby reached protection PON Network and run stable purpose.
The embodiment of the invention, described supervisory circuit 304 can be that the power supply to the optical transmitting set of optical module carries out the signal that input, conversion, calendar scheduling obtain, and also can be the signal that the processing such as detection, calculating, conversion to the optical transmitting set actual light power of optical module obtain later.Described signal sends to PON protocol processes and Business Processing chip 301.
See also shown in Figure 4ly, fault active detecting partition method flow chart in a kind of PON network that Fig. 4 provides for the embodiment of the invention comprises step:
Step 401:ONU receives OLT by distributing to the Frame that each ONU allows to send the information such as time window of upstream data having of down direction broadcast transmission, and parses the transmission data time window that OLT licenses to this ONU: comprise initial time in the moment of being allowed to send upstream data, be allowed to send information such as data time length of window.The initial time in the moment that ONU will be allowed to send upstream data compares with the local precision clock that is synchronized with OLT, judges whether the initial moment that is allowed to send upstream data arrive, and arrives constantly if ONU sends data, then forwards step 402 to;
Step 402: start the optical module reflector and carry out upstream data and send, wait to be allowed to send data time and to disappear and finish, forward step 403 to;
Step 403: disconnect the power supply of the optical transmitting set of optical module, close ONU, stop data and send;
Step 404: outside sending data window, the actual working state of the optical transmitting set of optical module is detected, judge according to testing result whether optical module is unusual; Its determination methods can be:
The time window of actual luminance of the optical transmitting set of optical module and optical line terminal authorized appropriation is compared; Judge according to comparative result whether optical module is unusual.When the optical transmitting set that detects optical module is luminous outside time window, judge that then optical module is unusual.Can also work as in addition detect optical module optical transmitting set outside time window when luminous, the time-delay of giving certain hour, and then judge that optical module is unusual.Concrete steps comprise: whether the optical transmitting set that detects optical module still is in luminance, if, judge further then whether its fluorescent lifetime outside time window surpasses one and preestablish time span, if surpass described predetermined set time span, judges that then optical module is unusual.
Step 405: disconnect the power supply of the optical transmitting set of unusual optical module, faulted ONU is opened from whole PON Network Isolation.
In the embodiment of the invention, the described time span that preestablishes is default, the time span that is enough to influence other ONU uplinks predefined or able to programme.
In sum, the embodiment of the invention is by increasing the supervisory circuit that optical module optical transmitting set actual working state is monitored on the ONU equipment in passive optical network PON, in real time the reflector luminance to the optical module of 2 or 2 above ONU detects, remedied the defective that to monitor at any time in the prior art, will reflect that then the signal of the actual transmit status of ONU optical module sends to PON protocol processes and Business Processing chip; PON protocol processes and Business Processing chip compare itself and OLT side mandate fluorescent lifetime window, judge that the actual luminance of this ONU optical module is whether in the time window of OLT authorized appropriation.If the luminance of ONU reality is luminous outside the time window of OLT authorized appropriation, judge further then whether its fluorescent lifetime outside time window surpasses one and preestablish time span, if surpass the described time span that preestablishes, judge that then optical module is unusual, disconnect the power supply of the optical transmitting set of unusual optical module, faulted ONU is opened from whole PON Network Isolation, avoid the PON business is impacted, thereby reduce the failure rate of PON Network, improve the stability of PON Network operation.
Above content be in conjunction with concrete execution mode to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a fault active detecting partition method is used for passive optical network, it is characterized in that described method comprises:
Detect the actual luminance of the optical transmitting set of optical module;
Judge according to testing result whether optical module is unusual,, then close optical module if unusual.
2. method according to claim 1 is characterized in that, describedly judges according to testing result whether unusual step comprises optical module:
The time window of actual luminance of the optical transmitting set of optical module and optical line terminal authorized appropriation is compared;
Judge according to comparative result whether optical module is unusual.
3. method according to claim 2 is characterized in that, describedly judges according to comparative result whether unusual step comprises optical module:
When the optical transmitting set that detects optical module is in luminance outside the time window of optical line terminal authorized appropriation, judge further more whether its fluorescent lifetime outside time window surpasses one and preestablish time span, if surpass the described time span that preestablishes, judge that then optical module is unusual, close optical module.
4. according to each described method in the claim 1 to 3, it is characterized in that the described optical module step of closing comprises:
Passive optical network protocol is handled and the Business Processing chip sends power control signal, disconnects the power supply of the optical transmitting set of unusual optical module.
5. method according to claim 1 is characterized in that, the time window of described optical line terminal authorized appropriation comprises the transmission data zero hour and sends data time length; Send data and arrive the zero hour, it is luminous to open optical transmitting set, sends data; Send ED and arrive constantly, close optical transmitting set, stop to send data.
6. method according to claim 1 is characterized in that, the step of the actual luminance of the optical transmitting set of described detection optical module comprises:
Power supply to the optical transmitting set of optical module detects; Perhaps
Actual power to the optical transmitting set of optical module detects.
7. optical link unit, comprise passive optical network protocol processing and Business Processing chip and optical transmitting set, it is characterized in that, described optical link unit also comprises and is used for supervisory circuit that the actual luminance of optical transmitting set is detected, described supervisory circuit one end is connected with optical transmitting set, the other end handles with passive optical network protocol and the Business Processing chip is connected, described supervisory circuit detects the actual luminance of the optical transmitting set of optical module, sending testing result then handles and the Business Processing chip to passive optical network protocol, passive optical network protocol is handled and the Business Processing chip judges according to testing result whether optical module is unusual, if unusually then close optical module.
8. optical link according to claim 7 unit, it is characterized in that, described passive optical network protocol processing and Business Processing chip compare the time window of actual luminance of the optical transmitting set of optical module and optical line terminal authorized appropriation, judge according to comparative result whether optical module is unusual, if unusually then close optical module.
9. optical link according to claim 8 unit, it is characterized in that, described passive optical network protocol is handled and the Business Processing chip judges further whether its fluorescent lifetime outside time window surpasses one and preestablish time span, if surpass the described time span that preestablishes, judge that then optical module is unusual, close optical module.
10. according to each described optical link unit in the claim 7 to 9, it is characterized in that described supervisory circuit detects the power supply of the optical transmitting set of optical module; Perhaps the actual power to the optical transmitting set of optical module detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101107715A CN102045105A (en) | 2009-10-14 | 2009-10-14 | Fault active detection and isolation method and optical line unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101107715A CN102045105A (en) | 2009-10-14 | 2009-10-14 | Fault active detection and isolation method and optical line unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102045105A true CN102045105A (en) | 2011-05-04 |
Family
ID=43910946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101107715A Pending CN102045105A (en) | 2009-10-14 | 2009-10-14 | Fault active detection and isolation method and optical line unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102045105A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102932055A (en) * | 2012-11-01 | 2013-02-13 | 烽火通信科技股份有限公司 | Device and method used for detecting optical collision and applied to time division passive optical network |
| JP2014039229A (en) * | 2012-08-20 | 2014-02-27 | Hochiki Corp | Optical line terminating device |
| CN103686468A (en) * | 2012-09-21 | 2014-03-26 | 上海斐讯数据通信技术有限公司 | Client device and control method thereof, and passive optical network and operation method thereof |
| CN103873308A (en) * | 2012-12-11 | 2014-06-18 | 中兴通讯股份有限公司 | ONU (Optical Network Unit) long luminescence self-detection system implementation method and device |
| CN104079348A (en) * | 2014-06-20 | 2014-10-01 | 广东东研网络科技股份有限公司 | Method for detecting long-time light emitting optical network units of Ethernet passive optical network |
| CN104317215A (en) * | 2014-09-30 | 2015-01-28 | 武汉电信器件有限公司 | Optical module aging and temperature cycling system and operation process thereof |
| CN106341183A (en) * | 2016-11-11 | 2017-01-18 | 济南浪潮高新科技投资发展有限公司 | Method for monitoring optical module by netmanager software |
| CN109450530A (en) * | 2018-12-21 | 2019-03-08 | 安徽皖兴通信息技术有限公司 | A kind of optical module received optical power overload protective device and guard method |
| CN115952026A (en) * | 2023-03-15 | 2023-04-11 | 燧原智能科技(成都)有限公司 | Method, device, equipment and storage medium for positioning abnormity of virtual chip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988433A (en) * | 2005-12-23 | 2007-06-27 | 华为技术有限公司 | Passive light network maintenance method and light network unit and light circuit terminal |
| CN101039147A (en) * | 2007-03-14 | 2007-09-19 | 中兴通讯股份有限公司 | System and method for protecting passive optical network |
| CN101047442A (en) * | 2006-04-02 | 2007-10-03 | 华为技术有限公司 | Maintenance method of passive optical network and its system |
-
2009
- 2009-10-14 CN CN2009101107715A patent/CN102045105A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988433A (en) * | 2005-12-23 | 2007-06-27 | 华为技术有限公司 | Passive light network maintenance method and light network unit and light circuit terminal |
| CN101047442A (en) * | 2006-04-02 | 2007-10-03 | 华为技术有限公司 | Maintenance method of passive optical network and its system |
| CN101039147A (en) * | 2007-03-14 | 2007-09-19 | 中兴通讯股份有限公司 | System and method for protecting passive optical network |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014039229A (en) * | 2012-08-20 | 2014-02-27 | Hochiki Corp | Optical line terminating device |
| CN103686468A (en) * | 2012-09-21 | 2014-03-26 | 上海斐讯数据通信技术有限公司 | Client device and control method thereof, and passive optical network and operation method thereof |
| CN102932055B (en) * | 2012-11-01 | 2015-07-01 | 烽火通信科技股份有限公司 | Device and method used for detecting optical collision and applied to time division passive optical network |
| CN102932055A (en) * | 2012-11-01 | 2013-02-13 | 烽火通信科技股份有限公司 | Device and method used for detecting optical collision and applied to time division passive optical network |
| CN103873308A (en) * | 2012-12-11 | 2014-06-18 | 中兴通讯股份有限公司 | ONU (Optical Network Unit) long luminescence self-detection system implementation method and device |
| CN103873308B (en) * | 2012-12-11 | 2018-02-16 | 徐挺 | The luminous self-check system implementation method of ONU length and device |
| CN104079348A (en) * | 2014-06-20 | 2014-10-01 | 广东东研网络科技股份有限公司 | Method for detecting long-time light emitting optical network units of Ethernet passive optical network |
| CN104317215A (en) * | 2014-09-30 | 2015-01-28 | 武汉电信器件有限公司 | Optical module aging and temperature cycling system and operation process thereof |
| CN104317215B (en) * | 2014-09-30 | 2017-04-12 | 武汉电信器件有限公司 | Operation process of optical module aging and temperature cycling system |
| CN106341183A (en) * | 2016-11-11 | 2017-01-18 | 济南浪潮高新科技投资发展有限公司 | Method for monitoring optical module by netmanager software |
| CN109450530A (en) * | 2018-12-21 | 2019-03-08 | 安徽皖兴通信息技术有限公司 | A kind of optical module received optical power overload protective device and guard method |
| CN115952026A (en) * | 2023-03-15 | 2023-04-11 | 燧原智能科技(成都)有限公司 | Method, device, equipment and storage medium for positioning abnormity of virtual chip |
| CN115952026B (en) * | 2023-03-15 | 2023-06-06 | 燧原智能科技(成都)有限公司 | Abnormal positioning method, device and equipment of virtual chip and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102045105A (en) | Fault active detection and isolation method and optical line unit | |
| US9276670B2 (en) | Self-diagnostic method for PON protection system, and PON protection system | |
| US7428382B2 (en) | System and method for performing in-service fiber optic network certification | |
| JP6111486B2 (en) | Optical network unit detection method and apparatus, and passive optical network system | |
| EP2421179B1 (en) | Method, device and system for testing optical network | |
| KR101825688B1 (en) | Method of detecting rigue onu, olt and pon system | |
| EP2418871B1 (en) | Method and apparatus for detecting rogue optical network unit in passive optical network | |
| US20090016714A1 (en) | System and method for performing in-service fiber optic network certification | |
| CN102752041B (en) | Method for detecting frequent-light-emission optical network units (ONUs) in gigabit passive optical network (GPON) system | |
| JP2007151086A (en) | Passive optical network | |
| WO2007100992A1 (en) | Method, apparatus, system and computer program product for identifying failing or failed optical network terminal(s) on an optical distribution network | |
| JP2010068362A (en) | Passive optical network system, and fault specifying method thereof | |
| US20120033963A1 (en) | Optical subscriber terminating device, pon system, and abnormality detecting method | |
| EP3220556B1 (en) | Method, device and system for detecting rogue optical network unit | |
| CN101997605B (en) | Optical distribution network as well as fault processing method, registration method and physical positioning method for optical network unit | |
| US20140369676A1 (en) | Pon system, olt, and onu | |
| KR101965403B1 (en) | Apparatus and method for monitoring optical line | |
| JP6376404B2 (en) | Station side apparatus and faulty terminal identification method in PON communication system | |
| CN102388549B (en) | Method, system and device for detecting optical fiber link in passive optical network | |
| JP2009171441A (en) | Registration method for house-side device, ason system, and station-side device | |
| CN111954101B (en) | Method and device for detecting repeated ALLOC ID in GPON system | |
| WO2016061782A1 (en) | Optical fiber troubleshooting method, device and system | |
| KR101088630B1 (en) | Optical network terminal and method for detecting rogue optical network terminal | |
| KR20080103778A (en) | Optical network terminal having a self diagnosis | |
| JP2016143950A (en) | PON system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110504 |