CN102546010A - Detection method and detection system based on passive optical network (PON) system - Google Patents
Detection method and detection system based on passive optical network (PON) system Download PDFInfo
- Publication number
- CN102546010A CN102546010A CN2012100191029A CN201210019102A CN102546010A CN 102546010 A CN102546010 A CN 102546010A CN 2012100191029 A CN2012100191029 A CN 2012100191029A CN 201210019102 A CN201210019102 A CN 201210019102A CN 102546010 A CN102546010 A CN 102546010A
- Authority
- CN
- China
- Prior art keywords
- detection
- otdr
- onu
- optical module
- sign
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention provides a detection method and a detection system based on a passive optical network (PON) system. The detection method includes: an optical line terminal (OLT) media access controller(MAC)chip is provided with an optical network unit (ONU) used for detecting as a virtual ONU outside a normal working ONU, the virtual ONU is distributed with bandwidth except for the bandwidth corresponding to that of the normal working ONU, and detection indication signals corresponding to the virtual ONU are generated. The detection indication signals include marks used for indicating detection types. In a time slot corresponding to the bandwidth distributed for the virtual ONU, the detection indication signals are sent to an optical module on the OLT side so as to lead the optical module on the OLT side to execute detection operation corresponding to the marks used for indicating detection types. The detection method and the detection system solve problems that in the prior art, optical time domain reflectometer (OTDR) detection cannot be conducted automatically in real time and normal ONU business is affected during OTDR detection, and therefore ensure not to affect normal ONU business and improve instantaneity and automaticity of detection.
Description
Technical field
The present invention relates to optical-fiber network (Passive Optical Networks abbreviates PON as) field for no reason at all, in particular to a kind of detection method and system based on the PON system.
Background technology
Universalness along with the fast development and the network application of network technology; Network communication and shopping at network and network amusement etc. have become the part in modern's life; No matter domestic or abroad all promote at the network rate of the speed-raising of carrying out network, particularly Access Network, and the most popular, that have prospect most at present technology is exactly PON (Passive Optical Networks; Have no chance optical-fiber network); Simultaneously, at home and in the world PON has begun disposing on a large scale, and is accepted by the overwhelming majority's operator.
After the operation of a large amount of PON deployed with devices, need carry out daily O&M and management to these PON equipment, though accumulated some experiences for the O&M of PON equipment at present; But, also lack effective means at present for the fault location of fibre circuit, because the optical fiber major part all is deployed in outdoor; Be easy to receive various condition effect and some anomalies occur, for example, optical fiber is seriously crooked; Fibercuts; When these anomalies occurring, have only position and the crooked reason of knowing bending point definitely, could repair optical fiber after the position of breakaway poing and the reason of fracture.
At present; Confirm that for the reason of the fault of fibre circuit and position the main method that adopts is through OTDR (Optical Time Domain Reflectometer; Optical time domain reflectometer) equipment is diagnosed the reason and the position of the fault on out optical fiber line road; When utilizing the fault of OTDR Equipment Inspection fibre circuit, can OTDR equipment testing light signal be incorporated in the trunk optical fiber through wave multiplexer and fibre circuit be detected with realization; Perhaps trunk optical fiber is connected on the OTDR equipment, comes fibre circuit is detected.
Yet above-mentioned use OTDR equipment has following shortcoming to the method that the fault of fibre circuit detects:
1) OTDR equipment is relatively expensive, and it is also not too convenient to operate, and has improved the cost of the above-mentioned method that the fault of fibre circuit is detected, and has increased operation easier;
2) a plurality of ONU (Optical Network Unit, optical network unit) are arranged under the PON mouth, possibly have only the branch optical fiber of the minority ONU among a plurality of ONU to break down; Yet, when the fault of using OTDR equipment to fibre circuit detects, need the business of all ONU is all stopped; OTDR equipment is inserted among the PON; Or after being incorporated into OTDR equipment testing light signal in the trunk optical fiber, continue the business of all ONU again, the fault of fibre circuit is detected; Like this, will have influence on when stopping all ONU professional that normal ONU carries out business under the PON mouth;
3) above-mentioned use OTDR equipment method that the fault of fibre circuit is detected need be when knowing that optical link breaks down, and just the fault to fibre circuit detects, and cause can not be in real time, automatically optical link is detected.
Summary of the invention
The invention provides a kind of detection method and system, can not carry out automatically, in real time in the correlation technique that OTDR detects and carry out influence when OTDR detects the problem that normal ONU under the PON mouth carries out business to solve at least based on the PON system.
According to an aspect of the present invention; A kind of detection method based on the PON system is provided; It comprises: optical line terminal media interviews control OLT MAC chip disposes an ONU who is used to detect as virtual ONU outside the optical network unit ONU of operate as normal, for virtual ONU distributes the bandwidth except that the bandwidth corresponding with the ONU of operate as normal, and the generation detection index signal corresponding with virtual ONU; Wherein, detect index signal and comprise the sign that is used to indicate type of detection; In the pairing time slot of bandwidth that distributes for virtual ONU, will detect the optical module that index signal sends to the OLT side, so that the optical module of OLT side is carried out and the corresponding detecting operation of sign that is used to indicate type of detection.
Preferably; In the pairing time slot of bandwidth that distributes for virtual ONU, will detect after the optical module that index signal sends to the OLT side; Above-mentioned detection method based on the PON system also comprises: the optical module of OLT side receives the detection index signal that OLT MAC chip sends; Wherein, be used to indicate the sign of type of detection to comprise that luminous power detects sign or optical time domain reflectometer OTDR detects sign in the detection index signal; Optical module is carried out and the corresponding detecting operation of sign that is used to indicate type of detection.
Preferably, optical module is carried out and is used for indicating the step of the corresponding detecting operation of sign of type of detection to comprise: obtain the sign that is used to indicate type of detection from detecting index signal; If being used to of obtaining indicates the OTDR that is designated of type of detection to detect sign, then optical module is carried out OTDR and is detected; If being used to of obtaining indicates the luminous power that is designated of type of detection to detect sign, then optical module is carried out luminous power and is detected.
Preferably, optical module is carried out the step that OTDR detects and comprised: optical module is injected into light detecting signal and carries out OTDR in the light mouth of trunk optical fiber and detect, and wherein, light detecting signal is that wavelength is the light signal of non-downlink working wavelength.
Preferably, optical module carries out after the OTDR detection ONU, and above-mentioned detection method based on the PON system also comprises: optical module obtains the OTDR testing result; Optical module is confirmed the situation of fibre circuit according to the OTDR testing result; If among the result who confirms warning information is arranged; Then optical module reports webmaster with the OTDR testing result, and webmaster is confirmed reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result.
Preferably, webmaster was confirmed reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result after, above-mentioned detection method based on the PON system also comprised: on the position of breaking down, carry out corresponding PON protection and switch.
Preferably; Optical module receives before the detection index signal of optical line terminal media interviews control OLT MAC chip transmission; Above-mentioned detection method based on the PON system also comprises: OLT MAC chip will detect index signal through one of following at least mode and send to optical module: the every separated predetermined period of OLT MAC chip will detect index signal and send to optical module; Perhaps, OLT MAC chip will detect index signal and send to optical module after the instruction that receives manual triggers.
According to a further aspect in the invention; A kind of detection system based on the PON system is provided, and it comprises: optical line terminal media interviews control OLT MAC chip, wherein; OLT MAC chip comprises: dispensing unit; Being used for outside the optical network unit ONU of operate as normal, disposing an ONU who is used to detect as virtual ONU, is that virtual ONU distributes the bandwidth except that the bandwidth corresponding with the ONU of operate as normal, and the generation detection index signal corresponding with virtual ONU; Wherein, detect index signal and comprise the sign that is used to indicate type of detection; Transmitting element is used in the pairing time slot of bandwidth that distributes for virtual ONU, will detecting the optical module that index signal sends to the OLT side, so that the optical module of OLT side is carried out and the corresponding detecting operation of sign that is used to indicate type of detection.
Preferably; Above-mentioned detection system based on the PON system also comprises: the optical module of OLT side; Wherein, optical module comprises: receiving element is used to receive the detection index signal that OLT MAC chip sends; Wherein, be used to indicate the sign of type of detection to comprise that luminous power detects sign or optical time domain reflectometer OTDR detects sign in the detection index signal; Performance element is used to carry out and the corresponding detecting operation of sign that is used to indicate type of detection.
Preferably, performance element comprises: acquisition module is used for obtaining the sign that is used to indicate type of detection from detecting index signal; First Executive Module when being used for indicating being designated OTDR and detecting sign of type of detection in being used to of obtaining, being carried out OTDR and is detected; Second Executive Module when being used for indicating being designated luminous power and detecting sign of type of detection in being used to of obtaining, being carried out luminous power and is detected.
Preferably, first Executive Module comprises: inject submodule, be used for that the light mouth that light detecting signal is injected into trunk optical fiber is carried out OTDR and detect, wherein, light detecting signal is that wavelength is the light signal of non-downlink working wavelength.
Preferably, above-mentioned detection system based on the PON system also comprises: acquiring unit is used to obtain the OTDR testing result; Report the unit; Be used for confirming the situation of fibre circuit according to the OTDR testing result; If among the result who confirms warning information is arranged, then optical module reports webmaster with the OTDR testing result, makes webmaster confirm reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result.
Preferably; Above-mentioned detection system based on the PON system also comprises: switch unit; Be used for webmaster is confirmed fibre circuit reason that breaks down and the position of breaking down according to the OTDR testing result after, on the position of breaking down, carry out corresponding PON protection and switch.
In the present invention; OLT MAC chip disposes an optical network unit ONU that is used to detect as virtual ONU outside the optical network unit ONU of operate as normal; And be that virtual ONU distributes the bandwidth different bandwidth corresponding with the optical network unit ONU of operate as normal; Detection index signal that will be corresponding with virtual ONU in the bandwidth time slot corresponding of distributing for virtual ONU sends to the optical module of OLT side; So that optical module carries out and detects the corresponding detecting operation of sign that is used to indicate type of detection in the index signal, realize that optical module can be according to the detection index signal that receives in real time, automatically carry out detecting operation to optical link; Simultaneously, configuration virtual ONU outside the optical network unit ONU of operate as normal, the bandwidth corresponding for the bandwidth and the optical network unit ONU of operate as normal of virtual ONU distribution is different; In the time slot of virtual ONU, send and detect index signal; The bandwidth that makes optical module be based on virtual ONU detects, and when detecting, can guarantee the business of the optical network unit ONU of operate as normal is not exerted an influence; Thereby improve the performance of system, help to improve user experience.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a kind of preferred construction figure based on the detection system of PON system according to the embodiment of the invention;
Fig. 2 is a kind of preferred construction figure according to the performance element of the embodiment of the invention;
Fig. 3 is a kind of preferred construction figure according to first Executive Module of the embodiment of the invention;
Fig. 4 is the another kind of preferred construction figure based on the detection system of PON system according to the embodiment of the invention;
Fig. 5 is another the preferred construction figure based on the detection system of PON system according to the embodiment of the invention;
Fig. 6 is a kind of preferred construction figure according to the optical module of the embodiment of the invention;
Fig. 7 is a kind of preferred flow chart based on the detection method of PON system according to the embodiment of the invention;
Fig. 8 is the another kind of preferred flow chart based on the detection method of PON system according to the embodiment of the invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
In following each embodiment, communication can realize that the present invention does not do qualification to this by wireless connections or wired connection or its both combination.
Embodiment 1
Fig. 1 is a kind of preferred construction figure based on the detection system of PON system according to the embodiment of the invention; As shown in Figure 1, should comprise OLT MAC chip 102 based on the detection system of PON system, wherein; OLT MAC chip 102 comprises: dispensing unit 1021; Being used for outside the optical network unit ONU of operate as normal, disposing an ONU who is used to detect as virtual ONU, is that virtual ONU distributes the bandwidth except that the bandwidth corresponding with the ONU of operate as normal, and the generation detection index signal corresponding with virtual ONU; Wherein, detect index signal and comprise the sign that is used to indicate type of detection; Transmitting element 1022; Communicate by letter with dispensing unit 1021; Be used in the pairing time slot of bandwidth that distributes for virtual ONU, will detecting the optical module that index signal sends to the OLT side, so that the optical module of OLT side is carried out and the corresponding detecting operation of sign that is used to indicate type of detection.
Preferably; The detection system based on the PON system according to the embodiment of the invention can also comprise: the optical module 104 of OLT side; Wherein, optical module 104 comprises: receiving element 1041 is used to receive the detection index signal that OLT MAC chip 102 sends; Wherein, be used to indicate the sign of type of detection to comprise that luminous power detects sign or optical time domain reflectometer OTDR detects sign in the detection index signal; Performance element 1042 is communicated by letter with receiving element 1041, is used to carry out and the corresponding detecting operation of sign that is used to indicate type of detection.
In above-mentioned preferred embodiment; OLT MAC chip 102 disposes an optical network unit ONU that is used to detect as virtual ONU outside the optical network unit ONU of operate as normal; And be that virtual ONU distributes the bandwidth different bandwidth corresponding with the optical network unit ONU of operate as normal; Detection index signal that will be corresponding with virtual ONU in the bandwidth time slot corresponding of distributing for virtual ONU sends to the optical module 104 of OLT side; So that optical module 104 carries out and detects the corresponding detecting operation of sign that is used to indicate type of detection in the index signal, realize that optical module 104 can be according to the detection index signal that receives in real time, automatically carry out detecting operation to optical link; Simultaneously, configuration virtual ONU outside the optical network unit ONU of operate as normal, the bandwidth corresponding for the bandwidth and the optical network unit ONU of operate as normal of virtual ONU distribution is different; In the time slot of virtual ONU, send and detect index signal; The bandwidth that makes optical module 104 be based on virtual ONU detects, and when detecting, can guarantee the business of the optical network unit ONU of operate as normal is not exerted an influence; Thereby improve the performance of system, help to improve user experience.
On the basis of the foregoing description; Transmitting element 1022 also is used for; Receive at optical module 104 before the detection index signal of optical line terminal media interviews control OLT MAC chip 102 transmissions; To detect index signal through one of following at least mode and send to that optical module 104:OLT MAC chip 102 is every will to be detected index signal at a distance from predetermined period and send to optical module 104, perhaps, OLT MAC chip 102 will detect index signal and send to optical module 104 after the instruction that receives manual triggers.In the present embodiment, OLT MAC chip 102 can be preset and send the cycle of detecting index signal, according to the different detection demand different cycle durations can be set, to satisfy the different detection requirement; Simultaneously, also can trigger OLT MAC chip 102 through the mode of manual triggers and send the detection index signal, for example; When learning that optical link breaks down, manual triggers OLT MAC chip 102 sends and detects index signal at any time, with the fault of timely detection optical link; Therefore; Can be directed against different scenes, select different transmissions to detect the mode of index signal, thereby strengthen the use flexibility of present embodiment.
On the basis of the foregoing description, the invention provides a kind of preferred performance element 1042, as shown in Figure 2, this performance element 1042 comprises: acquisition module 202 is used for obtaining the sign that is used to indicate type of detection from detecting index signal; First Executive Module 204 is communicated by letter with acquisition module 202, when being used for indicating being designated OTDR and detecting sign of type of detection in being used to of obtaining, carrying out OTDR and detects; Second Executive Module 206 is communicated by letter with acquisition module 202, when being used for indicating being designated luminous power and detecting sign of type of detection in being used to of obtaining, carrying out luminous power and detects.In the present embodiment, can carry out different detection according to the sign that detects the different detection type that comprises in the index signal, thereby strengthen practicality of the present invention.
On the basis of above-mentioned each embodiment; The invention provides a kind of preferred first Executive Module 204; As shown in Figure 3, this first Executive Module 204 comprises: inject submodule 302, be used for that the light mouth that light detecting signal is injected into trunk optical fiber is carried out OTDR and detect; Wherein, light detecting signal is that wavelength is the light signal of non-downlink working wavelength.In the present embodiment, light detecting signal is injected in the light mouth of trunk optical fiber, to realize the detection to optical link, simultaneously, light detecting signal is that wavelength is the light signal of non-downlink working wavelength.Preferably, non-downlink working wavelength refers to except an any wavelength the wavelength, for example; In the GPON system; The downlink working wavelength is to be the operation wavelength in (1480～1500) nm scope at center with 1490nm, and up operation wavelength is to be the operation wavelength in (1290～1330) nm scope at center with 1310nm, and non-downlink working wavelength only refers to otherwise the operation wavelength in (1480～1500) the nm scope that with 1490nm is the center is all passable; For example; 1310nm, 1550nm, operation wavelengths such as 1575nm; In the XGPON system; The downlink working wavelength is to be the operation wavelength in (1575～1580) nm scope at center with 1577nm, and up operation wavelength is to be the operation wavelength in (1260～1280) nm scope at center with 1270nm, non-downlink working wavelength only refer to otherwise with 1577nm be the center (operation wavelength in 1575～1580nm) the nm scopes is all passable; For example; 1310nm, 1490nm, operation wavelengths such as 1550nm; Certainly, the operation wavelength of selection OTDR also need satisfy the operation wavelength of the characteristic of OTDR.
On the basis of above-mentioned each preferred embodiment, the present invention improves above-mentioned detection system based on the PON system, and is as shown in Figure 4, and should comprise based on the detection system of PON system: acquiring unit 1043 is used to obtain the OTDR testing result; Report unit 1044; Communicate by letter with acquiring unit 1043; Be used for confirming the situation of fibre circuit according to the OTDR testing result; If among the result who confirms warning information is arranged, the OTDR testing result is reported webmaster, make webmaster confirm reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result.In the present embodiment; When determining the OTDR testing result warning information arranged; The OTDR testing result is reported webmaster; So that confirm reason that breaks down in the fibre circuit and the position of breaking down, provide the situation of readability, accurate fibre circuit, thereby improved detection accuracy of the present invention.
On the basis of above-mentioned each preferred embodiment; The present invention has done further improvement to above-mentioned detection system based on the PON system; As shown in Figure 5; Should comprise based on the detection system of PON system: switch unit 1045, be used for webmaster is confirmed fibre circuit reason that breaks down and the position of breaking down according to the OTDR testing result after, on the position of breaking down, carry out corresponding PON protection and switch.In the present embodiment; After confirming the reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result; On the position of breaking down, carrying out corresponding PON protection switches; Avoid carrying out corresponding PON protection and switch, switch thereby can carry out the PON protection simply, intuitively, effectively according to the OTDR testing result according to the dropout phenomenon.
On the basis of the foregoing description, the invention provides a kind of preferred optical module 104, as shown in Figure 6, this optical module 104 comprises:
1, also comprise the OTDR processing module except regular traffic transmission-receiving function module in the optical module 104, this OTDR processing module (being equivalent to performance element 1022) can be accomplished the OTDR measuring ability; Interface between optical module 104 and PON MAC (Media Access Control, the media interviews control) chip 104 also comprises:
1) I2C (Inter-Integrated Circuit) (being equivalent to acquiring unit 106) interface is used for the ONU luminous power, the acquisition interface of OTDR incident (being equivalent to the OTDR testing result) and OLT PON optical module 104 characteristics;
2) Trigger signal (being equivalent to detect index signal); Being used to trigger optical module 104 goes to obtain the ONU luminous power or starts the OTDR measurement; The Trigger signal is exported under the DBA module controls by PON MAC chip; The Trigger signal is continued to use the Trigger signal definition that current RSSI (Received Signal Strength Indication, the signal strength signal intensity indication of reception) measures, through the concrete measuring ability of I2C configuration Trigger signal;
3) the up operation wavelength of PON (for example, 1310nm) and downstream wavelength (for example, 1490nm) data path differential interface;
2, use up wavelength (for example, GPON is 1310nm, and 10G GPON is 1277nm etc.) or other non-downstream wavelength as the test light signal; Preferably, non-downlink working wavelength refers to except an any wavelength the wavelength, for example; In the GPON system; The downlink working wavelength is to be the operation wavelength in (1480～1500) nm scope at center with 1490nm, and up operation wavelength is to be the operation wavelength in (1290～1330) nm scope at center with 1310nm, and non-downlink working wavelength only refers to otherwise the operation wavelength in (1480～1500) the nm scope that with 1490nm is the center is all passable; For example; 1310nm, 1550nm, operation wavelengths such as 1575nm; In the XGPON system; The downlink working wavelength is to be the operation wavelength in (1575～1580) nm scope at center with 1577nm, and up operation wavelength is to be the operation wavelength in (1260～1280) nm scope at center with 1270nm, non-downlink working wavelength only refer to otherwise with 1577nm be the center (operation wavelength in 1575～1580nm) the nm scopes is all passable; For example; 1310nm, 1490nm, operation wavelengths such as 1550nm; Certainly, the operation wavelength of selection OTDR also need satisfy the operation wavelength of the characteristic of OTDR.
3, the OTDR module receives the upward signal shared receiver of optical device with normal PON, to reduce cost;
4, the OTDR test is controlled by the Trigger signal, and test result feeds back to system through the I2C interface;
Wherein, λ T is the wavelength of OTDR test light signal, and λ U is the data uplink operation wavelength, and λ D is the data downstream operation wavelength; λ T can equal λ U, also can be not equal to λ U, and preferred, λ T equals λ U, and still, λ T must be not equal to λ D.
In above-mentioned preferred embodiment; Send the detection index signal through OLT MAC chip 102 to optical module 104; Optical module 104 is carried out and the corresponding detecting operation of sign that is used to indicate type of detection after receiving and detecting index signal; Realize using 104 pairs of optical links of optical module to carry out detecting operation, avoid the use of external device optical link is carried out detecting operation, normal ONU carries out business under the PON mouth thereby avoided when using external device that optical link is detected, influencing; Simultaneously; OLT MAC chip 102 can whenever send at a distance from predetermined period and detect index signal; Avoid finding again optical link to be carried out fault detect when optical link breaks down, thus can be in real time, automatically optical link is detected, solved use OTDR equipment that fibre circuit is detected in the correlation technique and cause influence under the PON mouth normal ONU carry out business and can not be in real time, automatically to optical link detect problem; Normal ONU carries out business under the PON mouth thereby when optical link is detected, can guarantee not influence; Simultaneously, improved the real-time that detects, automaticity.
Embodiment 2
On the basis of Fig. 1-6, the invention provides a kind of preferred detection method based on the PON system, as shown in Figure 7, should comprise based on the detection method of PON system:
S702: optical line terminal media interviews control OLT MAC chip disposes an ONU who is used to detect as virtual ONU outside the optical network unit ONU of operate as normal; For virtual ONU distributes the bandwidth except that the bandwidth corresponding with the ONU of operate as normal; And the generation detection index signal corresponding with virtual ONU; Wherein, detect index signal and comprise the sign that is used to indicate type of detection;
S704: in the pairing time slot of bandwidth that distributes for virtual ONU, will detect the optical module that index signal sends to the OLT side, so that the optical module of OLT side is carried out and the corresponding detecting operation of sign that is used to indicate type of detection.
In above-mentioned preferred embodiment; OLT MAC chip disposes an optical network unit ONU that is used to detect as virtual ONU outside the optical network unit ONU of operate as normal; And be that virtual ONU distributes the bandwidth different bandwidth corresponding with the optical network unit ONU of operate as normal; Detection index signal that will be corresponding with virtual ONU in the bandwidth time slot corresponding of distributing for virtual ONU sends to the optical module of OLT side; So that optical module carries out and detects the corresponding detecting operation of sign that is used to indicate type of detection in the index signal, realize that optical module can be according to the detection index signal that receives in real time, automatically carry out detecting operation to optical link; Simultaneously, configuration virtual ONU outside the optical network unit ONU of operate as normal, the bandwidth corresponding for the bandwidth and the optical network unit ONU of operate as normal of virtual ONU distribution is different; In the time slot of virtual ONU, send and detect index signal; The bandwidth that makes optical module be based on virtual ONU detects, and when detecting, can realize the business of the optical network unit ONU of operate as normal is not exerted an influence; Thereby improve the performance of system, help to improve user experience.
On the basis of the foregoing description; In the pairing time slot of bandwidth that distributes for virtual ONU, will detect after the optical module that index signal sends to the OLT side; Above-mentioned detection method based on the PON system also comprises: the optical module of OLT side receives the detection index signal that the OLTMAC chip sends; Wherein, be used to indicate the sign of type of detection to comprise that luminous power detects sign or optical time domain reflectometer OTDR detects sign in the detection index signal; Optical module is carried out and the corresponding detecting operation of sign that is used to indicate type of detection.In the present embodiment; After optical module receives the detection index signal of MAC chip transmission; Carry out detecting operation, can realize optical module according to detect index signal in real time, automatically detect, simultaneously; Optical module can be used to indicate the sign of type of detection to carry out luminous power detection or OTDR detection according to detecting in the index signal, thereby has strengthened the practicality of this detection method.
On the basis of the foregoing description; The present invention improves above-mentioned detection method based on the PON system; Particularly; Receive at optical module before the detection index signal of optical line terminal media interviews control OLT MAC chip transmission; OLT MAC chip will detect index signal through one of following at least mode and send to optical module: the every separated predetermined period of OLT MAC chip will detect index signal and send to optical module, and perhaps, OLT MAC chip will detect index signal and send to optical module after the instruction that receives manual triggers.In the present embodiment, OLT MAC chip can be preset and send the cycle of detecting index signal, according to the different detection demand different cycle durations can be set, to satisfy the different detection requirement; Simultaneously, also can trigger OLT MAC chip through the mode of manual triggers and send the detection index signal, for example; When learning that optical link breaks down, manual triggers OLT MAC chip sends and detects index signal at any time, with the fault of timely detection optical link; Therefore; Can be directed against different scenes, select different transmissions to detect the mode of index signal, thereby strengthen the use flexibility of present embodiment.
On the basis of above-mentioned each preferred embodiment; The invention provides a kind of preferred optical module and carry out and be used to indicate the method for the corresponding detecting operation of sign of type of detection; Particularly, this optical module is carried out and is used for indicating the method for the corresponding detecting operation of sign of type of detection to comprise: obtain the sign that is used to indicate type of detection from detecting index signal; If being used to of obtaining indicates the OTDR that is designated of type of detection to detect sign, then optical module is carried out OTDR and is detected; If being used to of obtaining indicates the luminous power that is designated of type of detection to detect sign, then optical module is carried out luminous power and is detected.In the present embodiment, can carry out different detection according to the sign that detects the different detection type that comprises in the index signal, thereby strengthen practicality of the present invention.
On the basis of above-mentioned each preferred embodiment; The invention provides a kind of preferred optical module and carry out the method that OTDR detects; Particularly; This optical module is carried out the method that OTDR detects and comprised: optical module is injected into light detecting signal and carries out OTDR in the light mouth of trunk optical fiber and detect, and wherein, light detecting signal is that wavelength is the light signal of non-downlink working wavelength.In the present embodiment, light detecting signal is injected in the light mouth of trunk optical fiber, to realize the detection to optical link, simultaneously, light detecting signal is that wavelength is the light signal of non-downlink working wavelength.Preferably, non-downlink working wavelength refers to except an any wavelength the wavelength, for example; In the GPON system; The downlink working wavelength is to be the operation wavelength in (1480～1500) nm scope at center with 1490nm, and up operation wavelength is to be the operation wavelength in (1290～1330) nm scope at center with 1310nm, and non-downlink working wavelength only refers to otherwise the operation wavelength in (1480～1500) the nm scope that with 1490nm is the center is all passable; For example; 1310nm, 1550nm, operation wavelengths such as 1575nm; In the XGPON system; The downlink working wavelength is to be the operation wavelength in (1575～1580) nm scope at center with 1577nm, and up operation wavelength is to be the operation wavelength in (1260～1280) nm scope at center with 1270nm, non-downlink working wavelength only refer to otherwise with 1577nm be the center (operation wavelength in 1575～1580nm) the nm scopes is all passable; For example; 1310nm, 1490nm, operation wavelengths such as 1550nm; Certainly, the operation wavelength of selection OTDR also need satisfy the operation wavelength of the characteristic of OTDR.
On the basis of above-mentioned each preferred embodiment; The present invention improves above-mentioned detection method based on the PON system; Particularly, should also comprise based on the detection method of PON system: optical module carries out after the OTDR detection ONU, and optical module obtains the OTDR testing result; Optical module is confirmed the situation of fibre circuit according to the OTDR testing result; If among the result who confirms warning information is arranged; Then optical module reports webmaster with the OTDR testing result, and webmaster is confirmed reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result.In the present embodiment; In the present embodiment; When determining the OTDR testing result warning information is arranged, the OTDR testing result is reported webmaster, so that confirm reason that breaks down in the fibre circuit and the position of breaking down; Provide the situation of readability, accurate fibre circuit, thereby improved detection accuracy of the present invention.
On the basis of above-mentioned each preferred embodiment; The present invention has done further improvement to above-mentioned detection method based on the PON system; Particularly; Should also comprise based on the detection method of PON system: webmaster is confirmed reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result after, on the position of breaking down, carry out corresponding PON protection and switch.In the present embodiment; After confirming the reason that breaks down in the fibre circuit and the position of breaking down according to the OTDR testing result; On the position of breaking down, carrying out corresponding PON protection switches; Avoid carrying out corresponding PON protection and switch, switch thereby can carry out the PON protection simply, intuitively, effectively according to the OTDR testing result according to the dropout phenomenon.
On the basis of above-mentioned each embodiment, the invention provides another kind of preferred detection method based on the PON system, as shown in Figure 8, should comprise based on the detection method of PON system:
S802: (the Dynamic Bandwidth Assignment of the DBA in OLT PON-MAC chip; Dynamic Bandwidth Allocation) virtual ONU of configuration in the module; For example, fixing employing ONU ID is 0, and the actual ONU that uses is not in the numbering that for its distribution ONU ID is 0; And satisfy the fixed-bandwidth of OTDR incident for this virtual ONU distribution one; Be called for short Tv below, can be periodically or manual such bandwidth of assignment of allocation, can or specify time trigger to produce the OTDR incident at Tv time slot intercycle; Preferably, for confirming of Tv, can adopt following mode to confirm the size of Tv:
1) according to the next size of dynamically confirming distributed time slot Tv of the situation of whole ODN network, the required time of ONU of maximum distance should be less than Tv/2 in the OTDR test light signal arrival ODN network; And the distance of each ONU can obtain through finding range in the whole network; Under obtaining the PON mouth after the distance of all ONU; Can access maximum actual range, the light velocity and the refractive index in optical fiber also are known simultaneously, can calculate the required time T l of arrival ONU farthest through formula like this; Need to guarantee that Tv is greater than 2Tl this moment; The bandwidth of supposing to distribute to virtual ONU is B bps, and the DBA module is confirmed cycle T (carrying out the number of times that OTDR monitors each second) and Tv according to Tl and the bandwidth B bps that distributes to virtual ONU, can confirm above two parameters according to following formula:
Tv＞2Tl
T＜(B×6.43/8)/(2Tl+1)
2) can also adopt a kind of static mode to confirm for Tv; Greatest physical distance and logical reach for each its support of ODN network are; Support maximum physical distance to be used as ONU distance farthest it; Calculate Tl, calculating Tv and T then, wherein T must be more than or equal to 1.
S804: when optical module receives triggering (Trigger) signal; Configuration determination was carried out the measurement of luminous power or is monitored the OTDR incident before the OTDR processing module needed basis; Be that optical module supports the measurement of luminous power and OTDR to detect, detect, then go to step S806 if carry out OTDR; If carry out the measurement of luminous power, then go to step S812;
S806: when MAC was virtual ONU distribution T v bandwidth, the OTDR module obtained the OTDR test data in the Tv time slot.Particularly; Trigger the OTDR incident and obtain luminous power and all adopt the Trigger signal to trigger in optical module inside; In the time of need or triggering the OTDR incident at measuring light power; At first CPU is inner current through I2C notice optical module is measuring light power or OTDR incident, and the MAC chip is set then, and the MAC chip is given optical module Trigger signal; If OTDR measures; Then need notify correlation module to prepare OTDR measures; Need not carry out the measurement of luminous power, open and send sensed light signal through Trigger signalisation OTDR test long wavelength laser simultaneously, sensed light signal is injected PON light mouth; Wherein, the test light signal can be pulse or sequence;
S808: in order to reduce test noise; Repeat the process of above-mentioned distribution T v and OTDR test; Wherein, The number of times of duplicate allocation Tv is until satisfying the needed measuring accuracy of OTDR test processes module, is generally several thousand to hundreds of thousands, and optical module control and OTDR processing module obtain final test result with the data of test after average;
S810: after measuring end, read the OTDR incident of current measurement, get access to OTDR test curve data through I2C; According to OTDR event analysis fibre circuit situation, if fibre circuit has warning information then to give webmaster with the OTDR reporting events; Simultaneously, webmaster is to various OTDR incidents and warning information (for example, ONU dropout; OLT PON trunk signal such as loses at warning information) carry out analysis-by-synthesis; Provide the ODN network failure information of user's readability, ODN network failure information can accurately indicate ODN network reason that breaks down and the position of breaking down, and the OTDR testing process finishes;
S812: if carry out measuring light power; Then only give optical module control and the OTDR functional module notifies it to accomplish the measurement of luminous power with signal; Do not measure long wavelength laser (concrete luminous power detection mode and existing luminous power detection mode are in full accord, repeat no more) here and do not trigger OTDR;
S814: optical module pilot light power measurement finishes;
S816: read the measuring light power result through the I2C interface, the measuring light power flow process finishes.
In the above-described embodiments, the method that optical link is detected compared with prior art avoids the use of external device, has reduced the cost that optical link is detected; Simultaneously, reduce operation easier, improved the convenience that optical link is detected; In fault location, do not influence the regular traffic in the existing network; Saved O&M cost; Can real-time positioning optical link fault; Can more accurately locate optical link reason that breaks down and the position of breaking down more intelligently sooner, can in time find and solve optical link and break down, improve operator and client's satisfaction.
Simultaneously; PON OLT optical module after the increase OTDR function; Interface between itself and MAC need not change, still continues to use the optical module optical interface that current industry is supported photosphere OLS parameter (comprising rssi measurement) measuring ability, guarantees that the OLT system that existing network is disposed can support the OTDR function through changing optical module and updating software release; And a large amount of expensive OLT PON cards and other parts of OLT do not need change, reduce network investment.
Further, on the basis of the foregoing description, OTDR measures except indicate ODN network reason that breaks down and the position of breaking down for the user; And then accelerated outside the maintenance and location of network failure, the OTDR measurement function can also be through detecting the various protections that realize PON, with the trigger condition of OTDR measurement result as protection to fiber connectivity; For example; PON stride OLT TYPE B PON protection and whether with OLT TYPE B protection, it is normal just can to detect between OLT and first order splitter (SPILITER) trunk optical fiber with the OTDR function, if the fault of detecting then trigger PON and protect and switch; The OTDR detection is used for the PON protection; Detect according to dropout (LOS, Loss of signal) than present that to carry out the PON protection simpler, directly perceived with effectively; When the OTDR function was used for the PON network protection, OTDR testing pattern need be arranged to detecting pattern periodically in real time.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the detection method based on the PON system is characterized in that, comprising:
Optical line terminal media interviews control OLT MAC chip disposes an ONU who is used to detect as virtual ONU outside the optical network unit ONU of operate as normal; For said virtual ONU distributes the bandwidth except that the bandwidth corresponding with the ONU of said operate as normal; And the generation detection index signal corresponding with said virtual ONU; Wherein, said detection index signal comprises the sign that is used to indicate type of detection;
In the pairing time slot of bandwidth that distributes for said virtual ONU, said detection index signal sent to the optical module of OLT side, so that the optical module of said OLT side is carried out and the said corresponding detecting operation of sign that is used to indicate type of detection.
2. method according to claim 1 is characterized in that, in the pairing time slot of bandwidth that distributes for said virtual ONU, said detection index signal sent to the optical module of OLT side after, also comprise:
The optical module of said OLT side receives the detection index signal that said OLT MAC chip sends, and wherein, is used to indicate the sign of type of detection to comprise that luminous power detects sign or optical time domain reflectometer OTDR detects sign in the said detection index signal;
Said optical module is carried out and the said corresponding detecting operation of sign that is used to indicate type of detection.
3. method according to claim 2 is characterized in that, said optical module is carried out with said and is used to indicate the step of the corresponding detecting operation of sign of type of detection to comprise:
From said detection index signal, obtain the said sign that is used to indicate type of detection;
If that obtains saidly is used to indicate the OTDR that is designated of said type of detection to detect sign, then said optical module is carried out OTDR and is detected;
If that obtains saidly is used to indicate the luminous power that is designated of said type of detection to detect sign, then said optical module is carried out luminous power and is detected.
4. method according to claim 3 is characterized in that, the step that said optical module is carried out the OTDR detection comprises:
Said optical module is injected into light detecting signal and carries out OTDR in the light mouth of trunk optical fiber and detect, and wherein, said light detecting signal is that wavelength is the light signal of non-downlink working wavelength.
5. according to claim 3 or 4 described methods, it is characterized in that said optical module carries out said ONU also comprising after the OTDR detection:
Said optical module obtains the OTDR testing result;
Said optical module is confirmed the situation of fibre circuit according to said OTDR testing result; If among the result who confirms warning information is arranged; Then said optical module reports webmaster with said OTDR testing result, and said webmaster is confirmed reason that breaks down in the said fibre circuit and the position of breaking down according to said OTDR testing result.
6. method according to claim 5; It is characterized in that; Said webmaster is confirmed reason that breaks down in the said fibre circuit and the position of breaking down according to said OTDR testing result after, also comprise: on the position of breaking down, carry out corresponding PON protection and switch.
7. method according to claim 1 is characterized in that, optical module receives before the detection index signal of optical line terminal media interviews control OLT MAC chip transmission, also comprises:
Said OLT MAC chip sends to said optical module through one of following at least mode with said detection index signal:
Said OLT MAC chip is every to send to said optical module at a distance from predetermined period with said detection index signal, and perhaps, said OLT MAC chip sends to said optical module with said detection index signal after the instruction that receives manual triggers.
8. the detection system based on the PON system is characterized in that, comprising: optical line terminal media interviews control OLT MAC chip, and wherein, said OLTMAC chip comprises:
Dispensing unit; Be used for outside the optical network unit ONU of operate as normal, disposing an ONU who is used to detect as virtual ONU; For said virtual ONU distributes the bandwidth except that the bandwidth corresponding with the ONU of said operate as normal; And the generation detection index signal corresponding with said virtual ONU, wherein, said detection index signal comprises the sign that is used to indicate type of detection;
Transmitting element; Be used in the pairing time slot of bandwidth that distributes for said virtual ONU said detection index signal is sent to the optical module of OLT side, so that the optical module of said OLT side is carried out and the said corresponding detecting operation of sign that is used to indicate type of detection.
9. system according to claim 8 is characterized in that, also comprises: the optical module of said OLT side, and wherein, said optical module comprises:
Receiving element is used to receive the detection index signal that said OLT MAC chip sends, and wherein, is used to indicate the sign of type of detection to comprise that luminous power detects sign or optical time domain reflectometer OTDR detects sign in the said detection index signal;
Performance element is used to carry out and the said corresponding detecting operation of sign that is used to indicate type of detection.
10. system according to claim 9 is characterized in that, said performance element comprises:
Acquisition module is used for obtaining the said sign that is used to indicate type of detection from said detection index signal;
First Executive Module is used for saidly when being used to indicate being designated OTDR and detecting sign of said type of detection what obtain, carries out OTDR and detects;
Second Executive Module is used for saidly when being used to indicate being designated luminous power and detecting sign of said type of detection what obtain, carries out luminous power and detects.
11. system according to claim 10 is characterized in that, said first Executive Module comprises:
Inject submodule, be used for that the light mouth that light detecting signal is injected into trunk optical fiber is carried out OTDR and detect, wherein, said light detecting signal is that wavelength is the light signal of non-downlink working wavelength.
12. according to claim 10 or 11 described systems, it is characterized in that, also comprise:
Acquiring unit is used to obtain the OTDR testing result;
Report the unit; Be used for confirming the situation of fibre circuit according to said OTDR testing result; If among the result who confirms warning information is arranged; Then said optical module reports webmaster with said OTDR testing result, makes said webmaster confirm reason that breaks down in the said fibre circuit and the position of breaking down according to said OTDR testing result.
13. system according to claim 12 is characterized in that, also comprises:
Switch unit is used for said webmaster is confirmed said fibre circuit reason that breaks down and the position of breaking down according to said OTDR testing result after, on the position of breaking down, carries out corresponding PON protection and switches.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210019102.9A CN102546010B (en) | 2012-01-20 | 2012-01-20 | Detection method and detection system based on passive optical network (PON) system |
| PCT/CN2012/086620 WO2013107232A1 (en) | 2012-01-20 | 2012-12-14 | Detection method and system based on pon system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210019102.9A CN102546010B (en) | 2012-01-20 | 2012-01-20 | Detection method and detection system based on passive optical network (PON) system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102546010A true CN102546010A (en) | 2012-07-04 |
| CN102546010B CN102546010B (en) | 2017-02-08 |
Family
ID=46352059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210019102.9A Active CN102546010B (en) | 2012-01-20 | 2012-01-20 | Detection method and detection system based on passive optical network (PON) system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102546010B (en) |
| WO (1) | WO2013107232A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103067078A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信宽带多媒体技术有限公司 | Optical line terminal optical module and Ethernet passive optical network breakpoint detection system |
| WO2013107232A1 (en) * | 2012-01-20 | 2013-07-25 | 中兴通讯股份有限公司 | Detection method and system based on pon system |
| CN104301037A (en) * | 2013-07-16 | 2015-01-21 | 中兴通讯股份有限公司 | Method and system of implementing automatic alarm of fiber fault of passive optical network |
| CN104685847A (en) * | 2013-08-05 | 2015-06-03 | 华为技术有限公司 | Bandwidth allocation method, device and system |
| CN106549706A (en) * | 2015-09-16 | 2017-03-29 | 青岛海信宽带多媒体技术有限公司 | A kind of electrical port module |
| CN106851439A (en) * | 2015-12-07 | 2017-06-13 | 深圳市中兴微电子技术有限公司 | A kind of cut-in method and device of multiple optical network units |
| CN104919725B (en) * | 2013-12-09 | 2017-12-01 | 华为技术有限公司 | The detection means and method of optical network uplink signal |
| CN110461014A (en) * | 2013-03-28 | 2019-11-15 | 华为技术有限公司 | Bandwidth allocation methods, device, user equipment and base station |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570867A (en) * | 2014-12-26 | 2015-04-29 | 广东美的厨房电器制造有限公司 | Abnormity diagnosis method, abnormity diagnosis system, server, household electrical appliance and environment sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816977A (en) * | 2003-07-25 | 2006-08-09 | 诺基亚公司 | Single-fiber protection in telecommunications networks |
| CN101217313A (en) * | 2008-01-11 | 2008-07-09 | 北京邮电大学 | A fault diagnosis method applied OTDR passive optical network optical fiber |
| CN101562480A (en) * | 2008-04-15 | 2009-10-21 | 华为技术有限公司 | Optical access network, and method, system and apparatus for backuping optical line terminal |
| CN102177667A (en) * | 2008-10-09 | 2011-09-07 | 韩国科学技术院 | Fault localization method and fault localization device in a passive optical network, and passive optical network having the fault localization device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101489155B (en) * | 2006-03-15 | 2011-12-07 | 华为技术有限公司 | Passive optical network system and service protection method thereof |
| CN102075244B (en) * | 2010-12-30 | 2014-05-07 | 北京格林伟迪科技有限公司 | Method for diagnosing constant optical network units in Ethernet passive optical network |
| CN102142894B (en) * | 2011-02-12 | 2015-04-15 | 华为技术有限公司 | Optical network unit control method, device and system |
| 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 |
-
2012
- 2012-01-20 CN CN201210019102.9A patent/CN102546010B/en active Active
- 2012-12-14 WO PCT/CN2012/086620 patent/WO2013107232A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816977A (en) * | 2003-07-25 | 2006-08-09 | 诺基亚公司 | Single-fiber protection in telecommunications networks |
| CN101217313A (en) * | 2008-01-11 | 2008-07-09 | 北京邮电大学 | A fault diagnosis method applied OTDR passive optical network optical fiber |
| CN101562480A (en) * | 2008-04-15 | 2009-10-21 | 华为技术有限公司 | Optical access network, and method, system and apparatus for backuping optical line terminal |
| CN102177667A (en) * | 2008-10-09 | 2011-09-07 | 韩国科学技术院 | Fault localization method and fault localization device in a passive optical network, and passive optical network having the fault localization device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013107232A1 (en) * | 2012-01-20 | 2013-07-25 | 中兴通讯股份有限公司 | Detection method and system based on pon system |
| CN103067078A (en) * | 2013-01-07 | 2013-04-24 | 青岛海信宽带多媒体技术有限公司 | Optical line terminal optical module and Ethernet passive optical network breakpoint detection system |
| CN103067078B (en) * | 2013-01-07 | 2015-07-15 | 青岛海信宽带多媒体技术有限公司 | Optical line terminal optical module and Ethernet passive optical network breakpoint detection system |
| CN110461014B (en) * | 2013-03-28 | 2024-03-15 | 华为技术有限公司 | Bandwidth allocation method, device, user equipment and base station |
| CN110461014A (en) * | 2013-03-28 | 2019-11-15 | 华为技术有限公司 | Bandwidth allocation methods, device, user equipment and base station |
| CN104301037A (en) * | 2013-07-16 | 2015-01-21 | 中兴通讯股份有限公司 | Method and system of implementing automatic alarm of fiber fault of passive optical network |
| CN104685847A (en) * | 2013-08-05 | 2015-06-03 | 华为技术有限公司 | Bandwidth allocation method, device and system |
| CN104919725B (en) * | 2013-12-09 | 2017-12-01 | 华为技术有限公司 | The detection means and method of optical network uplink signal |
| US9859975B2 (en) | 2013-12-09 | 2018-01-02 | Huawei Technologies Co., Ltd. | Apparatus and method for detecting uplink optical signal |
| CN106549706B (en) * | 2015-09-16 | 2019-04-26 | 青岛海信宽带多媒体技术有限公司 | A kind of electrical port module |
| US10348406B2 (en) | 2015-09-16 | 2019-07-09 | Hisense Broadband Multimedia Technologies, Ltd. | Electrical interface module |
| CN106549706A (en) * | 2015-09-16 | 2017-03-29 | 青岛海信宽带多媒体技术有限公司 | A kind of electrical port module |
| CN106851439A (en) * | 2015-12-07 | 2017-06-13 | 深圳市中兴微电子技术有限公司 | A kind of cut-in method and device of multiple optical network units |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102546010B (en) | 2017-02-08 |
| WO2013107232A1 (en) | 2013-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102546010A (en) | Detection method and detection system based on passive optical network (PON) system | |
| US9240855B1 (en) | Fiber diagnosis system for point-to-point optical access networks | |
| CN101291176B (en) | Fault detection method, system and apparatus for optical distributed network | |
| KR101657329B1 (en) | Method and apparatus for fault discovery in a passive optical network(pon) | |
| CN101924590B (en) | The detection system of fiber fault of passive optical network and method | |
| CN101790111B (en) | Method and device and system for detecting light distributed network | |
| KR101790698B1 (en) | Method and apparatus for detecting optical line obstruction in passive optical network | |
| CN103166699A (en) | Method and system for positioning fault of optical fiber behind optical splitter in passive optical network (PON) | |
| CN103248422A (en) | An optical line terminal (OLT) and method therefore for performing in-band and out-band OTDR measurements | |
| CN101252393A (en) | Optic cable automatic monitoring system with optical fiber automatic switch unit | |
| CN102035599A (en) | FTTH passive optical link monitoring system and method | |
| CN104935378B (en) | A kind of fiber link detecting system and method for EPON | |
| CN102386974A (en) | PON (passive optical network) network fault detection method and device | |
| CN103905112B (en) | passive optical network fault detection method, device and system | |
| CN104601228A (en) | System and method for positioning PON network optical fiber link failures | |
| CN106330298A (en) | Real-time optical cable fiber core monitoring system | |
| CN101296039B (en) | Optical fiber link monitoring system and method for passive optical fiber network | |
| CN104518826A (en) | Fiber fault monitoring method, equipment and system | |
| CN102684779B (en) | Centralized measurement device, failure monitoring method and system | |
| CN105871604A (en) | Optical fiber attenuation entire online monitoring system and monitoring method | |
| CN110266374A (en) | It is a kind of can high precision monitor TDM-PON second level branch trouble device and method | |
| CN103427898B (en) | Method and system for determining branch fault point of passive optical network | |
| CN104184518B (en) | Monitoring device and method for optical wavelength division multiplexing transmission system | |
| CN104144014A (en) | Method, device and system for detecting optical fiber faults | |
| CN201918994U (en) | FTTH (Fiber To The Home) passive optical link monitoring 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |