CN103686468A - Client device and control method thereof, and passive optical network and operation method thereof - Google Patents
Client device and control method thereof, and passive optical network and operation method thereof Download PDFInfo
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- CN103686468A CN103686468A CN201210357026.2A CN201210357026A CN103686468A CN 103686468 A CN103686468 A CN 103686468A CN 201210357026 A CN201210357026 A CN 201210357026A CN 103686468 A CN103686468 A CN 103686468A
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Abstract
The invention discloses a client device and a control method thereof, and a passive optical network which includes the client device and an operation method thereof. The passive optical network includes an OLT and at least one client device which is an ONU or ONT. The client device includes a control module and an optical module. The control module is used for detecting whether long lighting happens to the optical module and reporting the event that the long lighting happens to the optical module to the OLT and switching off the optical module when the judgment result is yes. The client device and the control method thereof, and the passive optical network and the operation method thereof are capable of dealing with a long-lighting phenomenon of the client device timely so that generation of interferences on communication between other client devices and the OLT is prevented and thus operation stability of a PON is improved.
Description
Technical field
The present invention relates to ustomer premises access equipment and control method thereof in a kind of EPON (Passive Optical Network, is abbreviated as PON), and this EPON and operation method thereof.
Background technology
Compare with cable transmission, Optical Fiber Transmission has the advantages such as capacity is large, loss is little, anti-electromagnetic interference capability is strong, therefore along with the progressively decline of Optical Fiber Transmission cost, the fiberize of the Access Network development trend that is inevitable, and EPON adopts, being passive device, is to realize the most potential technology of broadband optical access net.
From the content of carrying, classify, PON technology mainly comprises APON(ATM Based PON, asynchronous transfer mode EPON), EPON(Ethernet Based PON, Ethernet passive optical network) and GPON(Gigabit PON, gigabit passive optical network) etc.
As shown in Figure 1, PON generally includes the OLT(optical line terminal that is positioned at central office) and a series of ustomer premises access equipment that is positioned at user resident, ustomer premises access equipment herein can be both ONU(Optical Network Unit, optical network unit), can be also ONT(Optical Network Termination, Optical Network Terminal, in Fig. 1, do not show), and be the ODN(Optical Distribution Network being formed by optical fiber, passive optical splitters or passive coupler in the middle of these devices, optical distribution network).Wherein, the SNI in Fig. 1 refers to Service Network Interface (Service Network Interface), IF
pONrefer to PON interface, that UNI refers to is user network side interface (User Network Interface).
Because ODN exists the characteristic of share medium, therefore up traffic transport is comparatively complicated.For fear of the generation of conflict, upstream adopts TDMA(time division multiple access) mode transmits, and according to the controlling mechanism of OLT, the transmission of up direction controlled.
Particularly, in the PON of a single point-to-multipoint, each ustomer premises access equipment sends data by time-multiplexed mode to OLT, OLT distributes time slot (mandate) to each ustomer premises access equipment under normal circumstances, guaranteeing only has the ustomer premises access equipment can be luminous at synchronization, ustomer premises access equipment only in the time slot (mandates) that OLT distributes its optical module of unlatching carry out luminously, so can not produce conflict between the transmitting uplink data of each ustomer premises access equipment.
But the optical module of ustomer premises access equipment unavoidably can be because there is luminous unstable or long hair light (luminous for a long time, for a long time under burst transmissions pattern) in aging or hardware fault etc.Once the optical module generation long hair light of certain ustomer premises access equipment, just will certainly interfere with other ustomer premises access equipment and the proper communication between OLT, affect the normal transmission of business of other ustomer premises access equipment.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome in the PON of prior art, once there be ustomer premises access equipment generation long hair light, just can interfere with other ustomer premises access equipment and the defect of the proper communication between OLT, providing a kind of can process the long hair optical phenomenon of ustomer premises access equipment in time, thereby avoid therefore other ustomer premises access equipment being disturbed with the generation of communicating by letter between OLT, and improved thus ustomer premises access equipment and control method and this EPON and the operation method thereof of the operation stability of PON.
The invention provides the ustomer premises access equipment in a kind of EPON, this EPON comprises an OLT and at least one ustomer premises access equipment, this ustomer premises access equipment is ONU or ONT, this ustomer premises access equipment comprises a control module and an optical module, its feature is, whether this control module there is long hair light for detection of this optical module, and for judgment result is that while being this OLT of reporting events of this optical module generation long hair light and closing this optical module.
Wherein, this optical module refers in ONU or ONT for carrying out the assembly module of burst transmissions, and this control module refers to is for to comprising that the various assembly modules of this optical module carry out central controlled maincenter module in ONU or ONT.
This optical module is commercially available to be obtained, and this control module can realize in conjunction with existing software programming means on existing hardware foundation.
Preferably: strategy one, when this control module for judgment result is that at this is, closes this optical module and when after this receiving the instruction of opening this optical module from the indication of this OLT, reopen this optical module; Or strategy two, permanently closes this optical module when this control module for judgment result is that at this is.
When carrying out the business that can not interrupt for a long time, or the probability of occurrence of long hair optical phenomenon is when lower, preferably adopts strategy one.Like this, after the certain duration of process, the optical module of this ustomer premises access equipment just can reopen, thereby recover the proper communication of data service, Maintenance free personnel go to user resident scene to restart the power supply of this optical module during this time, should " certain duration " can by this OLT, be issued by keeper.
And if the probability of occurrence of long hair optical phenomenon is higher, if continue to use again strategy one, just can cause this control module to detect continually and close this optical module, thus the uplink service of other ustomer premises access equipments is had a negative impact.Now preferably adopt strategy two, permanently close this optical module, make it to affect the uplink service of other ustomer premises access equipments, until attendant goes user resident to restart this optical module.
Wherein, whether this control module there is long hair light for periodically or in real time detecting this optical module.
Preferably, the condition that this control module is judged this optical module generation long hair light as: the lighting time interval of this optical module surpasses the minimum-poll time in this EPON, to find early the generation of long hair optical phenomenon, thereby early it is processed, in case have influence on the uplink service of other ustomer premises access equipments.
The present invention also provides a kind of EPON that comprises this OLT and at least one ustomer premises access equipment as above.
The present invention also provides a kind of control method of ustomer premises access equipment as above, and this control method comprises:
S
1, this control module detects this optical module whether long hair light occurs, if carry out S
2, again carry out if not S
1;
S
2, this control module is this OLT of reporting events of this optical module generation long hair light, and closes this optical module.
Preferably, at S
2in: this control module is closed this optical module and when after this receiving the instruction of opening this optical module from the indication of this OLT, is reopened this optical module; Or this control module is permanently closed this optical module.
Wherein, at S
1in, this control module periodically or in real time detects this optical module whether long hair light occurs.
Preferably, the condition that this control module is judged this optical module generation long hair light as: the lighting time interval of this optical module surpasses the minimum-poll time in this EPON.
The present invention also provides a kind of operation method that adopts the EPON of control method as above.
Positive progressive effect of the present invention is: can to the long hair optical phenomenon of ustomer premises access equipment, process in time, thereby avoid therefore other ustomer premises access equipment being disturbed with the generation of communicating by letter between OLT, and improve thus the operation stability of PON.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of existing PON.
Fig. 2 is the flow chart of the operation method of the EPON in one embodiment of the invention.
Embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.
An EPON in the present embodiment comprises an OLT and at least one ustomer premises access equipment, and this ustomer premises access equipment both can be for ONU, also can be ONT.This ustomer premises access equipment comprises that one for carrying out the optical module of burst transmissions and one for each assembly module of this ustomer premises access equipment (comprising this optical module) is carried out to central controlled control module.
This control module in the present embodiment is compared to the control module in existing ustomer premises access equipment, set up following functions: this control module can detect this optical module whether long hair light occurs, and judgment result is that while being this OLT of reporting events of this optical module generation long hair light and closing this optical module.
Herein, this control module both can be set as regularly carrying out to the detection of this optical module, also can be set as continuing in real time to carry out, and in order to find early the generation of long hair optical phenomenon, thereby reduce its impact on the uplink service of other ustomer premises access equipment, as long as detecting the lighting time interval of this optical module, this control module surpasses the minimum-poll time in this EPON, just can judge that long hair light has occurred this optical module.
When this control module detects this optical module, there is long hair optical phenomenon, and need to close this optical module time, can take two kinds of optional strategies, below with reference to the operation method of this EPON, these two kinds of strategies have been elaborated.
This operation method comprises the following steps:
When carrying out the business that can not interrupt for a long time, or the probability of occurrence of long hair optical phenomenon is when lower, preferably adopts strategy one; And when the probability of occurrence of long hair optical phenomenon is higher, preferably adopt strategy two.
Claims (10)
1. the ustomer premises access equipment in an EPON, this EPON comprises an OLT and at least one ustomer premises access equipment, this ustomer premises access equipment is ONU or ONT, this ustomer premises access equipment comprises a control module and an optical module, it is characterized in that, whether this control module there is long hair light for detection of this optical module, and for judgment result is that while being this OLT of reporting events of this optical module generation long hair light and closing this optical module.
2. ustomer premises access equipment as claimed in claim 1, is characterized in that, when this control module for judgment result is that at this is, closes this optical module and when after this receiving the instruction of opening this optical module from the indication of this OLT, reopens this optical module; Or, when for judgment result is that at this being, this control module permanently closes this optical module.
3. ustomer premises access equipment as claimed in claim 1, is characterized in that, whether this control module, for periodically or in real time detecting this optical module, long hair light occurs.
4. ustomer premises access equipment as claimed in claim 1, is characterized in that, the condition that this control module is judged this optical module generation long hair light as: the lighting time interval of this optical module surpasses the minimum-poll time in this EPON.
5. an EPON that comprises this OLT in claim 1 and at least one ustomer premises access equipment as described in any one in claim 1-4.
6. a control method for the ustomer premises access equipment as described in any one in claim 1-4, this control method comprises:
S
1, this control module detects this optical module whether long hair light occurs, if carry out S
2, again carry out if not S
1;
S
2, this control module is this OLT of reporting events of this optical module generation long hair light, and closes this optical module.
7. control method as claimed in claim 6, is characterized in that, at S
2in: this control module is closed this optical module and when after this receiving the instruction of opening this optical module from the indication of this OLT, is reopened this optical module; Or this control module is permanently closed this optical module.
8. control method as claimed in claim 6, is characterized in that, at S
1in, this control module periodically or in real time detects this optical module whether long hair light occurs.
9. control method as claimed in claim 6, is characterized in that, the condition that this control module is judged this optical module generation long hair light as: the lighting time interval of this optical module surpasses the minimum-poll time in this EPON.
10. the operation method of the EPON of the employing control method as described in any one in claim 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357026.2A CN103686468A (en) | 2012-09-21 | 2012-09-21 | Client device and control method thereof, and passive optical network and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357026.2A CN103686468A (en) | 2012-09-21 | 2012-09-21 | Client device and control method thereof, and passive optical network and operation method thereof |
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| CN103686468A true CN103686468A (en) | 2014-03-26 |
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| CN201210357026.2A Pending CN103686468A (en) | 2012-09-21 | 2012-09-21 | Client device and control method thereof, and passive optical network and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027144A (en) * | 2016-07-07 | 2016-10-12 | 邦彦技术股份有限公司 | Method and system for positioning and identifying reflection phenomenon in optical fiber communication |
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| EP2262133A1 (en) * | 2008-04-28 | 2010-12-15 | Huawei Device Co., Ltd | Extending method device and system of passive optical network |
| CN102045105A (en) * | 2009-10-14 | 2011-05-04 | 中兴通讯股份有限公司 | Fault active detection and isolation method and optical line unit |
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| CN1874248A (en) * | 2005-06-02 | 2006-12-06 | 华为技术有限公司 | Method for controlling optical sending function of device at user end in passive optical network |
| CN101159491A (en) * | 2006-10-08 | 2008-04-09 | 华为技术有限公司 | Uplink time slot collision detection method and optical line terminal of passive optical network |
| EP2262133A1 (en) * | 2008-04-28 | 2010-12-15 | Huawei Device Co., Ltd | Extending method device and system of passive optical network |
| CN101820316A (en) * | 2009-02-27 | 2010-09-01 | 中国移动通信集团公司 | Method for closing constant optical network unit and optical network unit thereof |
| CN102045105A (en) * | 2009-10-14 | 2011-05-04 | 中兴通讯股份有限公司 | Fault active detection and isolation method and optical line unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106027144A (en) * | 2016-07-07 | 2016-10-12 | 邦彦技术股份有限公司 | Method and system for positioning and identifying reflection phenomenon in optical fiber communication |
| CN106027144B (en) * | 2016-07-07 | 2018-12-07 | 邦彦技术股份有限公司 | Method and system for positioning and identifying reflection phenomenon in optical fiber communication |
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