CN102142894B - Optical network unit control method, device and system - Google Patents
Optical network unit control method, device and system Download PDFInfo
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Abstract
The invention discloses an optical network unit (ONU) control method, an ONU control device and an ONU control system. The method comprises the following steps of: sending a ranging message to an off-line ONU; acquiring a serial number of the off-line ONU; after a first predetermined delay, distributing identification (ID) to the off-line ONU; acquiring an equalization delay of the off-line ONU; and after a second predetermined delay, transmitting the equalization delay to the off-line ONU to make the off-line ONU enter an on-line state. By the method, the device and the system, the control of the off-line ONU still can be realized by an optical line terminal (OLT) when an uplink optical path has a fault, so that user experience is improved.
Description
Technical field
The invention belongs to network communication technology field, relate to a kind of control method of optical network unit, Apparatus and system.
Background technology
Compared with active soft exchange technology, PON (Passive Optical Network, EPON) system is owing to eliminating the active equipment between local side and user side, thus make to safeguard simple, reliability is high, cost is low, and can fiber resource be saved, it is the primary solutions of following FTTH (Fiber To The Home, fiber to the home).Along with the extensive use of PON system, system maintenance is more and more distinct issues.Up light path due to PON system is burst and by multiple collaborative share, easily by external environmental interference or destruction.Such as when up light path be subject to the interference of uncontrollable light source or up light path occur lasting light source, packet loss, repeatedly on roll off the production line, the problem such as to go offline time, OLT (Optical Line Terminal, optical line terminal) cannot with ONU (Optical Network Unit, optical network unit) complete interacting message, need to detect light path fault, the fault detection method usually adopted is:
Detect in up light path and whether have uncontrollable light source, an idle upstream time window is opened at OLT, in this time window, OLT distributes up transmission to any ONU and authorizes, then in this time window, ONU can not be luminous, because all controlled ONU can not send data in this window, OLT gets involved with or without uncontrollable light source by detecting to receive light signal to carry out in this time window, if receive light, show have uncontrollable light source to invade, otherwise do not have; Or, the optical splitter of one 1: 2 is connect by up light path one-to-two at OLT optical interface place, one tunnel is received OLT and is made system worked well, another road light is then received on tester, there is provided the light path that tester uses, the luminous power, light eye pattern etc. that are detected corresponding up light by tester determine whether up light path exists fault.
In above-mentioned fault detection method, due to OLT, can only to control online ONU luminous, therefore when up light path fault, and the uncontrollable non-online ONU of OLT, thus cause to carry out fault detect to up light path.
Summary of the invention
The embodiment provides a kind of control method of optical network unit, Apparatus and system, can realize depositing in up light path the control realized in the case of a fault non-online optical network unit, improve the experience degree of user.
The embodiment provides a kind of control method of optical network unit, described method comprises: send ranging message to non-online optical network unit, obtain the sequence number of described non-online optical network unit; After the first preset time delay, to described non-online optical network unit allocation identification ID; Obtain the balanced time delay of described non-online optical network unit, after the second preset time delay, send described balanced time delay to described non-online optical network unit, make described non-online optical network unit enter presence.
The embodiment provides a kind of device controlling optical network unit, comprising:
Message sending unit, for sending ranging message to non-online optical network unit;
Allocation units, for obtaining the sequence number of described non-online optical network unit; After the first predetermined time delay, distribute ID to described non-online optical network unit;
Control unit, for obtaining the balanced time delay of described non-online optical network unit, after the second preset time delay, sending described balanced time delay to described non-online optical network unit, making described non-online optical network unit enter presence.
Embodiments of the invention also provide a kind of passive optical network, and described system comprises: optical line terminal and optical network unit, wherein,
Described optical line terminal, for sending ranging message to non-online optical network unit, obtains the sequence number of described non-online optical network unit; After the first preset time delay, to described non-online optical network unit allocation identification ID; Obtain the balanced time delay of described non-online optical network unit, after the second preset time delay, send described balanced time delay to described non-online optical network unit, make described non-online optical network unit enter presence;
Described non-online optical network unit, processes for the ranging message sent according to described optical line terminal; And according to the balanced time delay that described optical line terminal sends, complete registration, enter presence.
The technical scheme provided as can be seen from the embodiment of the invention described above, by sending ranging message to non-online optical network unit, obtains the sequence number of described non-online optical network unit; After the first preset time delay, to described non-online optical network unit allocation identification ID; Obtain the balanced time delay of described non-online optical network unit, after the second preset time delay, send described balanced time delay to described non-online optical network unit, described non-online optical network unit is made to enter presence, achieve OLT and deposit the control that still can realize in the case of a fault non-online optical network unit in up light path, improve the experience degree of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic flow sheet of the control method of a kind of optical network unit that Fig. 1 provides for embodiments of the invention;
The concrete grammar schematic flow sheet that Fig. 2 reaches the standard grade for the non-online optical network unit of a kind of optical line terminal control that embodiments of the invention provide;
The method flow schematic diagram that Fig. 3 reaches the standard grade for the non-online optical network unit of another kind of optical line terminal control that embodiments of the invention provide;
The schematic flow sheet of a kind of light path fault detection method that Fig. 4 provides for embodiments of the invention;
A kind of apparatus structure schematic diagram controlling optical network unit that Fig. 5 provides for embodiments of the invention;
The structural representation of a kind of passive optical network that Fig. 6 provides for embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment provides a kind of control method of optical network unit, as shown in Figure 1, described method comprises:
Step S102, optical line terminal send ranging message to non-online optical network unit.
Described non-online optical network unit (Optical Network Unit, ONU) for when up light path fault, or because other fault causes ONU to go offline, thus not by optical line terminal (Optical LineTerminal, OLT) ONU controlled can be non-online ONU.
Concrete, can also arrange an ONU equipment at OLT local virtual, the function of this virtual ONU equipment mainly replaces the protocol interaction between non-online ONU realization with OLT.Described virtual ONU can identify the registration message of PON system, and can respond the message that OLT sends, and the configuration information of the sequence number SN information of this virtual ONU, non-online ONU that the range information of range finding is corresponding with this virtual ONU is consistent.
Described method can also comprise, and described OLT sends ranging message to described virtual ONU, the sequence number of wherein said virtual ONU and described non-online ONU and finding range apart from identical.
Step S104, described OLT obtain the sequence number of described non-online ONU, and after the first preset time delay, to described non-online ONU allocation identification ID.
Wherein, described OLT can receive the sequence number that described virtual ONU sends; Or, extract the sequence number of described non-online ONU from this locality, thus obtain the sequence number of described non-online ONU.
The sequence number of the described described non-online ONU extracted from this locality is the sequence number before this ONU goes offline, and this sequence number is kept at this locality.
The value of described first preset time delay can be greater than the time dealt with after described non-online ONU receives ranging message, also its value can be determined according to circuit farthest, such as: the trip delay of 20km light signal is 200 μ s, also the upper limit of its value can be less than OLT and send message to the turnaround time of ONU.
Step S106, described OLT obtain the balanced time delay of described non-online ONU, after the second preset time delay, send described balanced time delay to described non-online ONU, make described non-online ONU enter presence.
The range finding distance of the described non-online ONU that wherein said OLT can store according to this locality, or, according to the range finding distance of virtual ONU, obtain the balanced time delay of described non-online ONU.
The value of described second preset time delay can with reference to identical to the set-up mode of the first preset time delay in step S104, also can be different, principal security is not when receiving the message that non-online ONU returns, certain time is set, balanced time delay is sent to ONU when certain time then triggers, even if thus ensure describedly non-ly also can not complete this registration process online in linear light network unit, thus realize the control to non-online ONU.Certainly, the value of above-mentioned first preset time delay or the value of the second preset time delay also can be inputted by attendant's manual configuration at OLT end.
Adopt the technical scheme of the present embodiment, OLT when up light path fault, can be sent ranging message by intact descending light path to non-online ONU, distributes the message, balanced time delay message etc. of ID, thus makes this ONU enter normal upper line states.
The concrete grammar schematic flow sheet that the non-online ONU of a kind of optical line terminal control that Fig. 2 provides for embodiments of the invention reaches the standard grade.
Step S202, optical line terminal OLT send ranging message to non-online ONU.
Described non-online ONU for when up light path fault, or causes ONU to go offline due to other fault, thus by the ONU of optical line terminal OLT control, can be non-online ONU.
Step S204, described OLT obtain the sequence number of described non-online ONU from this locality, and after the first preset time delay, to described non-online ONU allocation identification ID.
Due to the up light path fault of PON system, therefore OLT cannot receive the ranging response message that non-online ONU returns, but because descending light path does not have fault, so this non-online ONU still can receive the message that OLT sends, and perform corresponding function according to the content of message.
Concrete, described OLT is after sending ranging message to non-online ONU, the ranging response message whether receiving this non-online ONU and send can be ignored, that is: after the first preset time delay t1, no matter whether receive the ranging response message that this non-online ONU sends, all think that this non-online ONU receives ranging message, and continue to send the message of distributing ID to this non-online ONU.
The sequence number of the described described non-online ONU extracted from this locality is the sequence number before this ONU goes offline, and this sequence number is kept at this locality.
The value of described first preset time delay can be greater than the time dealt with after described non-online ON receives ranging message, also its value can be determined according to circuit farthest, such as: the trip delay of 20km light signal is 200 μ s, also the upper limit of its value can be less than OLT and send message to the turnaround time of ONU.
Step S206, described OLT obtain the balanced time delay of described non-online ONU from this locality, after the second preset time delay, send described balanced time delay to described non-online ONU, make described non-online ONU enter presence.
Particularly, OLT is after online ONU non-to this sends the message of distributing ID, the ID response message whether receiving this non-online ONU and send can be ignored, that is: after the second preset time delay t2, no matter whether receive the ID response message that this non-online ONU sends, all think that this non-online ONU has received the message of distributing ID, and continue to send balanced time delay message to this non-online ONU.Now, this non-online ONU has entered normal upper line states, and OLT can distribute bandwidth to this ONU as required and control this ONU luminescence.
Wherein, the range finding distance of the described non-online ONU that described OLT can store according to this locality, obtains the balanced time delay of described non-online ONU.
The value of described second preset time delay can with reference to identical to the set-up mode of the first preset time delay in step S104, also can be different, principal security is not when receiving the message that non-online ONU returns, certain time is set, balanced time delay is sent to ONU when certain time then triggers, even if thus ensure describedly non-ly also can not complete this registration process online in linear light network unit, thus realize the control to non-online ONU.Certainly, the value of above-mentioned first preset time delay or the value of the second preset time delay also can be inputted by attendant's manual configuration at OLT end.
Adopt the technical scheme of the present embodiment, OLT can when up light path fault, sequence number and the range finding distance of described non-online ONU is preserved in advance by this locality, ONU ID is sent by descending light path to non-online ONU through the first preset time delay, after the second preset time delay, send described balanced time delay message, thus make this ONU enter normal upper line states, and then OLT can control the luminescence of this non-online ONU.
The method flow schematic diagram that the non-online ONU of another kind of optical line terminal control that Fig. 3 provides for embodiments of the invention reaches the standard grade.
Step S302, optical line terminal OLT send ranging message to non-online ONUONU and virtual ONU.
Arrange an ONU equipment at OLT local virtual, the function of this virtual ONU equipment mainly replaces the protocol interaction between non-online ONU realization with OLT.Described virtual ONU can identify the registration message of PON system, and can respond the message that OLT sends, and the configuration information of the sequence number SN information of this virtual ONU, non-online ONU that the range information of range finding is corresponding with this virtual ONU is consistent.This virtual ONU can be OLT software virtual, also can be hardware designs.
Step S304, described virtual ONU, according to described ranging message, return the sequence number of described virtual ONU to described OLT.
Because the sequence number of virtual ONU is identical with the sequence number of described non-online ONU, carry out alternately so act on behalf of described non-online ONU and OLT by virtual ONU.
Step S306, described OLT obtain the sequence number of described non-online ONU, and after the first preset time delay, to described non-online ONU allocation identification ID.
The value of described first preset time delay can be greater than the time dealt with after described non-online ONU receives ranging message, also its value can be determined according to circuit farthest, such as: the trip delay of 20km light signal is 200 μ s, also the upper limit of its value can be less than OLT and send message to the turnaround time of ONU.
Step S308, described OLT, according to the range finding distance according to virtual ONU, obtain the balanced time delay of described non-online ONU.
Step S310, after the second preset time delay, send described balanced time delay to described non-online ONU, make described non-online ONU enter presence.
The value of described second preset time delay can with reference to identical to the set-up mode of the first preset time delay in step S306, also can be different, principal security is not when receiving the message that non-online ONU returns, certain time is set, balanced time delay is sent to ONU when certain time then triggers, even if thus ensure describedly non-ly also can not complete this registration process online in linear light network unit, thus realize the control to non-online ONU.Certainly, the value of above-mentioned first preset time delay or the value of the second preset time delay also can be inputted by attendant's manual configuration at OLT end.
Adopt the technical scheme of the present embodiment, OLT can when up light path fault, whole ranging process is completed by arranging the virtual ONU identical with the sequence number of described non-online ONU and the information such as distance of finding range, namely the sequence number of this non-online ONU is returned by virtual ONU, and range finding distance, replace non-online ONU to complete line process in whole registration, thus make this non-online ONU enter normal upper line states, and then OLT can control the luminescence of this non-online ONU.
After being reached the standard grade by above-mentioned non-online ONU, described OLT just can carry out light path fault detect, and lower mask body introduction is when up light path breaks down, and how OLT carries out the method for fault detect to light path.
The schematic flow sheet of a kind of light path fault detection method that Fig. 4 provides for embodiments of the invention:
Step S402, OLT issue deexcitation message to each online ONU, and up optical power value P0 when record is online without ONU.
Concrete, first OLT issues deexcitation message to each ONU, to guarantee that all ONU are in non-presence, can not produce interference like this in up light path because of the fault of ONU.After having all ONU all to roll off the production line, the up luminous power recorded at OLT place is designated as P0.
It should be noted that because the non-online ONU in embodiment two and embodiment three reaches the standard grade, and be subject to the control of OLT, so these non-online ONU can receive the deexcitation message that OLT issues.
It is luminous that step S404, OLT control wherein certain non-online ONU, and the luminous power recorded at OLT place is P1.
The method flow that wherein above-mentioned OLT controls wherein certain non-online ONU luminescence with reference to the step S202-S206 of embodiment two, or can realize with reference to the step S302-S310 of embodiment three, just no longer repeats here.
Step S406, judge that whether described optical power value P1 and P0 is equal; If equal, then up uncontrollable light source produces due to this ONU, thus detects that this ONU breaks down.
If P1 is greater than P0, then represent that up uncontrollable light signal is not produced by this ONU, need to proceed to detect, now repeat above-mentioned steps, until the ONU broken down detected.
The above-mentioned light path fault detection method that embodiments of the invention additionally provide, comprises and issues deexcitation message to each ONU, and up optical power value P0 when record is online without ONU; It is luminous that OLT controls non-online ONU, and the optical power value P1 recorded now, if P1 equals P0, then up uncontrollable light signal ONU generation thus, achieve the control of OLT to non-online ONU, and by the control to non-online ONU, solve the fault detection problem of up light path further, can quick position, improve the satisfaction of user.
It should be noted that, one of ordinary skill in the art will appreciate that all or part of step realized in above-mentioned each embodiment of the method is that the hardware that can carry out instruction relevant by program completes, corresponding program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Embodiments of the invention additionally provide the device of a kind of control ONU, as shown in Figure 5, comprise message sending unit 500 and allocation units 502, and control unit 504, wherein:
Message sending unit 500, for sending ranging message to non-online ONU.
Wherein, described message sending unit 500 also for sending ranging message to described virtual ONU, the sequence number of wherein said virtual ONU and described non-online ONU and finding range apart from identical.
Allocation units 502, for obtaining the sequence number of described non-online ONU; After the first predetermined time delay, to described non-online ONU allocation identification ID.
The sequence number that described allocation units 502 send specifically for receiving virtual ONU; Or, the sequence number of described non-online ONU is extracted from this locality.
Control unit 504, for obtaining the balanced time delay of described non-online ONU, after the second preset time delay, sending described balanced time delay to described non-online ONU, making described non-online ONU enter presence.
The range finding distance of described non-online ONU of described control unit 504 specifically for storing according to this locality, or, according to the range finding distance of virtual ONU, obtain the balanced time delay of described non-online ONU.
Described first preset time delay or the second preset time delay are greater than the described non-processing time done according to described ranging message in linear light network unit.
Described device can also carry out luminescence by controlling above-mentioned non-online ONU, and then realizes fault detect to up light path, and concrete testing process can reference example four, reaches fast detecting light path fault, improves users satisfaction degree.
Adopt the scheme of the present embodiment, OLT can when up light path fault, send ranging message by intact descending light path to non-online ONU, distribute ID, send balanced time delay etc., thus this ONU is entered and keeps going up line states normally, to accept the control of OLT at any time.
Embodiments of the invention additionally provide a kind of passive optical network, and as shown in Figure 6, Fig. 6 is a kind of passive optical network, and described system comprises: optical line terminal 600 and optical network unit 602, wherein,
Described optical line terminal OLT 600, for sending ranging message to non-online optical network unit; Obtain the sequence number of described non-online optical network unit, and after the first preset time delay, to described non-online optical network unit allocation identification ID; Obtain the balanced time delay of described non-online optical network unit, after the second preset time delay, send described balanced time delay to described non-online optical network unit, make described non-online optical network unit enter presence;
Described non-online optical network unit ONU 602, processes for the ranging message sent according to described optical line terminal; And according to the balanced time delay that described optical line terminal sends, complete registration, enter presence.
Described system also comprises:
Virtual optical network unit ONU 604, for the ranging message sent according to described optical line terminal, return sequence number that described virtual optical network unit sends to described optical line terminal, the sequence number of wherein said virtual optical network unit and described non-online optical network unit and finding range apart from identical.
Wherein said optical line terminal OLT 600, also for sending ranging message to described virtual optical network unit, the sequence number of wherein said virtual optical network unit and described non-online optical network unit and finding range apart from identical.
The range finding distance of described non-online optical network unit of described optical line terminal 600 also for storing according to this locality, or, according to the range finding distance of virtual optical network unit, obtain the balanced time delay of described non-online optical network unit.Described system can also carry out luminescence by controlling above-mentioned non-online ONU, and then realizes fault detect to up light path, and concrete testing process can reference example four, reaches fast detecting light path fault, improves users satisfaction degree.
Adopt the scheme of the present embodiment, OLT can when up light path fault, send ranging message by intact descending light path to non-online ONU, distribute ID, send balanced time delay etc., thus this ONU is entered and keeps going up line states normally, to accept the control of OLT at any time.
The embodiment of the processing capacity of each unit comprised in the device of above-mentioned control ONU and passive light network system describes, in this no longer repeated description in method execution mode before.
It should be noted that in said apparatus embodiment, included unit is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change 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 (14)
1. a control method for optical network unit, is characterized in that, comprising:
Send ranging message to non-online optical network unit;
Obtain the sequence number of described non-online optical network unit; And after the first preset time delay, to described non-online optical network unit allocation identification ID, the value of described first preset time delay is greater than the time dealt with after described non-online optical network unit receives ranging message;
Obtain the balanced time delay of described non-online optical network unit, after the second preset time delay, send described balanced time delay to described non-online optical network unit, make described non-online optical network unit enter presence.
2. control method according to claim 1, is characterized in that, described method also comprises:
Send ranging message to virtual optical network unit, the sequence number of wherein said virtual optical network unit and described non-online optical network unit and finding range apart from identical.
3. control method according to claim 1 and 2, is characterized in that, the sequence number of the described non-online optical network unit of described acquisition comprises:
Receive the sequence number that virtual optical network unit sends; Or,
The sequence number of described non-online optical network unit is extracted from this locality.
4. control method according to claim 1 and 2, is characterized in that, the balanced time delay of the described non-online optical network unit of described acquisition comprises:
According to the range finding distance of the described non-online optical network unit that this locality stores, or, according to the range finding distance of virtual optical network unit, obtain the balanced time delay of described non-online optical network unit.
5. control method according to claim 1, is characterized in that, described first preset time delay or the second preset time delay are greater than the described non-processing time done according to described ranging message in linear light network unit.
6. control a device for optical network unit, it is characterized in that, comprising:
Message sending unit, for sending ranging message to non-online optical network unit;
Allocation units, for obtaining the sequence number of described non-online optical network unit; After the first predetermined time delay, to described non-online optical network unit allocation identification ID, the value of described first preset time delay is greater than the time dealt with after described non-online optical network unit receives ranging message;
Control unit, for obtaining the balanced time delay of described non-online optical network unit, after the second preset time delay, sending described balanced time delay to described non-online optical network unit, making described non-online optical network unit enter presence.
7. device according to claim 6, is characterized in that, in message sending unit also for sending ranging message to virtual optical network unit, and the sequence number of wherein said virtual optical network unit and described non-online optical network unit and finding range apart from identical.
8. the device according to claim 6 or 7, is characterized in that, the sequence number that described allocation units send specifically for receiving virtual optical network unit; Or, the sequence number of described non-online optical network unit is extracted from this locality.
9. the device according to claim 6 or 7, it is characterized in that, the range finding distance of described non-online optical network unit of described control unit specifically for storing according to this locality, or, according to the range finding distance of virtual optical network unit, obtain the balanced time delay of described non-online optical network unit.
10. device according to claim 6, is characterized in that, described first preset time delay or the second preset time delay are greater than the described non-processing time done according to described ranging message in linear light network unit.
11. 1 kinds of passive optical networks, is characterized in that, described system comprises: optical line terminal and optical network unit, wherein,
Described optical line terminal, for sending ranging message to non-online optical network unit; Obtain the sequence number of described non-online optical network unit, and after the first preset time delay, to described non-online optical network unit allocation identification ID, the value of described first preset time delay is greater than time of dealing with after described non-online optical network unit receives ranging message or determines according to circuit farthest; Obtain the balanced time delay of described non-online optical network unit, after the second preset time delay, send described balanced time delay to described non-online optical network unit, make described non-online optical network unit enter presence;
Described non-online optical network unit, processes for the ranging message sent according to described optical line terminal; And according to the balanced time delay that described optical line terminal sends, complete registration, enter presence.
12. systems according to claim 11, is characterized in that, described system also comprises:
Virtual optical network unit, for the ranging message sent according to described optical line terminal, return sequence number that described virtual optical network unit sends to described optical line terminal, the sequence number of wherein said virtual optical network unit and described non-online optical network unit and finding range apart from identical.
13. systems according to claim 12, it is characterized in that, described optical line terminal also for sending ranging message to described virtual optical network unit, the sequence number of wherein said virtual optical network unit and described non-online optical network unit and finding range apart from identical.
14. systems according to claim 12, it is characterized in that, the range finding distance of described non-online optical network unit of described optical line terminal also for storing according to this locality, or, according to the range finding distance of virtual optical network unit, obtain the balanced time delay of described non-online optical network unit.
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| CN102546010B (en) * | 2012-01-20 | 2017-02-08 | 中兴通讯股份有限公司 | Detection method and detection system based on passive optical network (PON) system |
| EP3220556B1 (en) * | 2014-12-15 | 2019-02-20 | Huawei Technologies Co., Ltd. | Method, device and system for detecting rogue optical network unit |
| CN106851439B (en) * | 2015-12-07 | 2020-04-24 | 深圳市中兴微电子技术有限公司 | Access method and device for multiple optical network units |
| WO2017113214A1 (en) * | 2015-12-30 | 2017-07-06 | 华为技术有限公司 | Optical network unit detection method and apparatus, and passive optical network system |
| CN109104646A (en) * | 2017-06-21 | 2018-12-28 | 中兴通讯股份有限公司 | A kind of optical network unit (ONU) registration method and device |
| EP3860001A4 (en) | 2018-10-31 | 2021-10-20 | Huawei Technologies Co., Ltd. | Single board, optical module, olt, and information processing method |
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| CN101132234A (en) * | 2006-08-24 | 2008-02-27 | 上海贝尔阿尔卡特股份有限公司 | Device and method for detecting time slot conflict between optical network units in optical network |
| CN101378311A (en) * | 2007-08-27 | 2009-03-04 | 华为技术有限公司 | Method, system and equipment for protecting rearrange |
| CN101826919A (en) * | 2010-05-11 | 2010-09-08 | 东南大学 | Mixed type passive optical network structure and method for positioning and restoring faults thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101132234A (en) * | 2006-08-24 | 2008-02-27 | 上海贝尔阿尔卡特股份有限公司 | Device and method for detecting time slot conflict between optical network units in optical network |
| CN101378311A (en) * | 2007-08-27 | 2009-03-04 | 华为技术有限公司 | Method, system and equipment for protecting rearrange |
| CN101826919A (en) * | 2010-05-11 | 2010-09-08 | 东南大学 | Mixed type passive optical network structure and method for positioning and restoring faults thereof |
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