CN1750495A - Optical fiber access net and its communication protecting method - Google Patents
Optical fiber access net and its communication protecting method Download PDFInfo
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- CN1750495A CN1750495A CN 200510102568 CN200510102568A CN1750495A CN 1750495 A CN1750495 A CN 1750495A CN 200510102568 CN200510102568 CN 200510102568 CN 200510102568 A CN200510102568 A CN 200510102568A CN 1750495 A CN1750495 A CN 1750495A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/112—Line-of-sight transmission over an extended range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
Abstract
This invention relates to optical access network and communication protection method, which contains optical communication system, wireless communication system and communication switching device, when the optical fiber between optical line terminal and optical network unit occurs broken fault, the communication switching device switching the communication service from optical communication system to wireless communication system, then returning back when the fault is solved. Said invention has simple structure with limitation of pipeline and optical cable.
Description
Technical field
The present invention relates to a kind of Optical Access Network and communication protecting method thereof; particularly a kind of have a communications protection function; the Optical Access Network of radio communication protection can be provided when optical fiber generation disconnection fault and when optical fiber generation disconnection fault, guarantee the impregnable communication protecting method that carries out of communication service.
Background technology
Adopting Optical Access Network is the inexorable trend of optical fiber communication development, and the topological structure of Optical Access Network has five kinds usually: single star, many stars, tree-like, bus and annular for four kinds of fronts, can be referred to as star structure.Compare with Point-to-Point system with looped network, stellate reticulum can be saved a large amount of optical fiber and optical transceiver module, and its branched structure more easily covers, and therefore for Optical Access Network, generally all adopts star structure.
In Optical Access Network, in order to guarantee normally carrying out of communication service, need protect optical link usually, its protected mode mainly contains following several:
1. adopt and divide fine mode to protect, promptly in same optical cable, be provided with primary and backup optical fiber, when the master is cut off with optical fiber with cable; can enable standby optical fiber; but when whole optical cable generation disengagement failure, this mode can't guarantee normally carrying out of communication service.
2. adopt the branch cable mode of going the same way to protect; promptly on same pipeline or route; primary and backup optical fiber is in different optical cables; like this when the master uses optical fiber place optical cable generation disengagement failure; can enable standby optical fiber, still, this mode can only be protected general optical cable disengagement failure; and can not prevent large-scale fault, cause the accident of large-area cut-out cable run as construction because of big machinery.
3. adopt to divide cable along separate routes a mode protect not only different cables of promptly primary and backup optical fiber, and pipeline or route are also different.This mode provides protection to greatest extent to fibre circuit, but its economic cost is very high.
Yet in existing real protection is used; owing to be subjected to the restriction of pipeline, fiber resource and construction cost; only adopt above-mentioned protected mode that the fibre circuit between optical line terminal and the optical branching device is protected; seldom the fibre circuit between optical branching device and the optical network unit in the Star network Access Network is protected; in case fibercuts fault takes place for it, network service was lost efficacy.
Many to the user of rate sensitivity and the user that need carry out the real-time network information interchange, though network is not had strict QOS requirement, can tolerate the performance degradation in the network short time, for example degradation under the network speed, but they are impatient at network and interrupt for a long time.Therefore, Optical Access Network being taked suitably and effective and efficient manner is protected, is the unimpeded necessary guarantee of user network communication.
Summary of the invention
Main purpose of the present invention is in existing defective of the protected mode of above-mentioned Optical Access Network and actual the use fibre circuit of star Optical Access Network being protected not enough reason and present situation; a kind of Optical Access Network and communication protecting method thereof are provided; this Optical Access Network and method make up wireless communication system and optical fiber telecommunications system, make the communication service of optical fiber telecommunications system obtain sound assurance.
To achieve these goals, the invention provides a kind of Optical Access Network, comprise the optical fiber telecommunications system of forming by optical line terminal, optical distribution, optical network unit and user side integrated access equipment at least, also comprise a wireless base station, the communicating to connect of this wireless base station and described optical line terminal; Described wireless base station and wireless user hold equipment wireless to communicate to connect; This wireless user holds equipment and described optical network unit to be connected with the communication service switching device shifter that is used for communication line is switched respectively, described wireless user holds equipment also to communicate to connect with optical network unit, and described communication service switching device shifter is connected with described user side integrated access equipment; Be provided with the control module that is used for the detection module that signal is detected and is used for sending switch-over control signal in the described optical network unit to described communication service switching device shifter.Wherein, described detection module can be connected with described control module, and described communication service switching device shifter can be positioned over described optical network unit inside, promptly with described optical network unit for being wholely set.
This Optical Access Network can be protected the communication service between optical line terminal in the optical fiber telecommunications system and the optical network unit.Generally, communication service is carried out in optical fiber telecommunications system, when optical fiber telecommunications system is worked, amplitude, power and/or the energy of the signal that transmits in the detection module detection fiber communication system, when amplitude, power and/or the energy of signal are lower than prior preset threshold, think the optical fiber generation fracture defect between the optical line terminal and optical network unit in the optical fiber telecommunications system, the communication service switching device shifter switches to wireless communication system with the communication service in the optical fiber telecommunications system to carry out; Because optical fiber communication all is better than wireless communication system at aspects such as transmission rate and stability, when detection module detects amplitude, power and/or energy from the signal of optical line terminal and is higher than prior preset threshold, think that the fracture defect of optical fiber is eliminated in optical fiber telecommunications system, by the communication service switching device shifter communication service is switched the back into optical fibers communication system by wireless communication system again and carry out.
The present invention adopts wireless communication system that the fibre circuit of star Optical Access Network is protected; simple in structure; can find in time that fault also can communicate the switching between the system effectively; satisfied the demand of user to the network down time; and compare with the fibre circuit unprotect of present star Optical Access Network or the protection scheme of the wired protection of 1+1; not only broken through pipeline; the restriction of cable resource; greatly reduce investment and O﹠M cost; can also adopt wireless mode to cover communication zone fast in the place that does not have optical cable; can be after optical cable laying finishes with the protection system of wireless communication system as optical fiber telecommunications system; help implementing step by step and the reusing of equipment; for popularizing of star optical-fiber network; and guarantee that the unimpeded of user, especially group user communication service all is very favorable.
Below by specific embodiments of the invention and accompanying drawing it is described further.
Description of drawings
Fig. 1 is the system construction drawing of Optical Access Network of the present invention;
Fig. 2 is for to switch to the schematic flow sheet that wireless communication system carries out with communication service by optical fiber telecommunications system;
Fig. 3 is for to return to the schematic flow sheet that optical fiber telecommunications system is carried out with communication service by wireless communication system.
Embodiment
Main thought of the present invention is to introduce wireless communication system the fibre circuit between optical line terminal and the optical network unit in the star Optical Access Network is protected, and this Optical Access Network with protection comprises optical fiber telecommunications system, wireless communication system and communication service switching device shifter.Under normal conditions, communication service is carried out in optical fiber telecommunications system, when fracture defect appearred in the optical fiber between optical line terminal in the optical fiber telecommunications system and the optical network unit, the communication service switching device shifter switched to wireless communication system with the communication service in the optical fiber telecommunications system; Because optical fiber communication all is better than radio communication at aspects such as transmission rate and stability, after the fracture defect of optical fiber is eliminated in optical fiber telecommunications system, by the communication service switching device shifter communication service is switched the back into optical fibers communication system by wireless communication system again.
Figure 1 shows that the system construction drawing of Optical Access Network of the present invention, in this Optical Access Network, optical fiber telecommunications system comprises optical line terminal 1, optical distribution 2, optical network unit 3 and user side integrated access equipment at least.Wherein, optical line terminal 1 has the interface with switching network, data network, wireless base station 6 and optical distribution 2 etc., communicates to connect with switch, router, wireless base station 6 and optical distribution 2 etc. respectively, provides necessary means to transmit various communication services; Optical distribution 2 is the physical connection of transmission medium for optical network unit 3 and optical line terminal 1 provide with optical fiber, and makes the signal that transmits in the optical fiber carry out the reallocation of power after the coupled zone is coupled; Optical network unit 3 is provided with interface and user terminal integrated access equipment 5 interfaces of holding equipment 7 to be connected with the wireless user, with optical distribution 2 and the communication service switching device shifter 4 that is used for communication line is switched be connected, at least comprise and be used for detection module 31 that the signal that the signal optical fibre communication system is transmitted is detected, be used for when detection module 31 detects less than signal, producing the alarm module 32 of loss of signal alarm information, be used for sending the control module 33 of switch-over control signal to communication service switching device shifter 4, the business interface functional module 34 and the power supply and the maintenance management functional module 35 that are used for optical network unit 3 is powered and integrated service is managed that are used for the information of transmitting/receiving wireless ustomer premises access equipment 7, wherein, detection module 31 is connected with the maintenance management module with alarm module 32 and power supply, can also be connected with control module 33, specifically can adopt amplitude, checkout gear such as power and/or energy; Alarm module 32 is connected with business interface functional module 34, business interface functional module 34 is connected with maintenance management functional module 35 and communication service switching device shifter 4 with power supply, and hold equipment 7 to communicate to connect with the wireless user, control module 33 is connected with maintenance management functional module 35 with business interface functional module 34 and power supply, and by being connected with communication service switching device shifter 4 with business interface functional module 34. wherein, detection module 31 also can with alarm module 32 for being wholely set.
Communication service switching device shifter 4 is used for communication line is switched, promptly control and hold equipment 7 to be connected with optical network unit 3 or wireless user user terminal integrated access equipment 5, so that the control communication service is undertaken by optical fiber telecommunications system or wireless communication system, control module 33 by optical network unit 3 inside is controlled its switchings by business interface functional module 34, can be independent of optical network unit 3 places, also can be placed on optical network unit 3 inside, promptly with optical network unit 3 for being wholely set.This switching device shifter specifically can adopt electric switch, optical switch, optoelectronic switch, micro-machinery switch or optical waveguide switch etc., by default, when being the fibre circuit operate as normal of optical fiber telecommunications system, user terminal integrated access equipment 5 is connected with optical network unit 3, and when fracture defect appears in optical fiber, holds equipment 7 to be connected with the wireless user user terminal integrated access equipment 5.
Wireless communication system comprises that wireless base station 6 and wireless user hold equipment 7, wherein, wireless base station 6 communicates to connect with the input of optical line terminal 1, hold equipment 7 radio communications to be connected with the wireless user, carry out wireless transmission reception and RRM etc., can be Point-to-Point system, also can be point-to-multipoint system, for example the WiMax system; The wireless user holds equipment 7, be provided with the interface that is connected with user terminal integrated access equipment 5 with optical network unit 3, be connected with the communication service switching device shifter 4 that is used for communication line is switched, communicate to connect with optical network unit 3, information transmit-receive between realization and the optical network unit 3, and the message transmission between realization wireless base station 6 and the user terminal integrated access equipment 5.
When optical fiber telecommunications system was worked, power meter and/or energy meter detected the power and/or the energy of the signal that transmits in the described optical fiber telecommunications system.When the power of signal and/or energy are lower than prior preset threshold, think the optical fiber generation fracture defect between the optical line terminal and optical network unit in the optical fiber telecommunications system, the communication service switching device shifter switches to wireless communication system with communication service by optical fiber telecommunications system.Figure 2 shows that the present invention switches to an idiographic flow of wireless communication system with communication service by optical fiber telecommunications system, carries out following steps:
The power that step 201. power meter detects the signal that transmits in the optical fiber telecommunications system is less than preset threshold power in advance, thinks dropout;
The devices allocation respective bandwidth is held to the wireless user in step 205. wireless base station, and sends the affirmation information that bandwidth has been distributed;
The communication line that the switch-over control signal that step 208. electric switch sends according to control module will be connected with optical network unit switches to the wireless user and holds equipment, makes the upward signal of communication service be switched to the wireless user and holds equipment;
Wherein, the power that also can the power meter in optical network unit detects signal less than setting threshold power after, directly dropout information is sent to control module by power meter, by control module control optical switch communication service is switched to wireless communication system and carry out, promptly step 202～206 can be omitted.
After fibercuts fault in optical fiber telecommunications system between optical line terminal and the optical network unit is repaired, because down direction is a broadcast mode, power and/or energy that power meter and/or energy meter can detect the signal that transmits in the optical fiber telecommunications system are higher than prior preset threshold power, think to receive the signal that comes from optical line terminal that the communication service switching device shifter switches the back into optical fibers communication system with communication service by wireless communication system again.Figure 3 shows that the present invention with the idiographic flow of communication service by wireless communication system switching back into optical fibers communication system, carries out following steps:
The power that step 301. power meter detects signal is higher than prior preset threshold power, thinks to receive signal;
The communication line that the switch-over control signal that step 308. electric switch sends according to control module will be connected with wireless user's end equipment switches to optical network unit, makes the upward signal of communication service be switched to optical network unit;
Equally, after the power that also can the power meter in optical network unit detects signal is higher than preset threshold power, the information that directly will be received signal by power meter sends to control module, by control module control optical switch communication service is switched to optical fiber telecommunications system and carry out, promptly step 302～306 can be omitted.
It should be noted last that above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1, a kind of Optical Access Network, comprise optical fiber telecommunications system, be provided with optical line terminal, optical distribution, optical network unit and user side integrated access equipment in this optical fiber telecommunications system, it is characterized in that also comprising a wireless base station, this wireless base station and described optical line terminal communicate to connect; Described wireless base station and wireless user hold equipment wireless to communicate to connect; This wireless user holds equipment and described optical network unit to be connected with the communication service switching device shifter that is used for communication line is switched respectively, described wireless user holds equipment also to communicate to connect with optical network unit, and described communication service switching device shifter is connected with described user side integrated access equipment; Be provided with the control module that is used for the detection module that signal is detected and is used for sending switch-over control signal in the described optical network unit to described communication service switching device shifter.
2, Optical Access Network according to claim 1 is characterized in that, described communication service switching device shifter and described optical network unit are for being wholely set.
3, Optical Access Network according to claim 1 is characterized in that, described detection module is connected with described control module.
4, according to claim 1,2 or 3 described Optical Access Networks, it is characterized in that, also be provided with the alarm module that is used for producing loss of signal alarm information when described detection module detects less than signal in the described optical network unit, this alarm module is connected with the business interface functional module of described optical network unit inside.
5, Optical Access Network according to claim 4 is characterized in that, described alarm module and described detection module are for being wholely set.
6, Optical Access Network according to claim 5 is characterized in that, described detection module is amplitude, power and/or energy testing apparatus.
7, a kind of communication protecting method based on the arbitrary described Optical Access Network of aforesaid right requirement 1-6 is characterized in that the communication service switching device shifter switches to wireless communication system with communication service by optical fiber telecommunications system, may further comprise the steps:
Amplitude, power and/or the energy of the detected signal of step 1. detection module send dropout information less than prior preset threshold to control module;
The described control module of step 2. sends switch-over control signal to control communication service switching device shifter;
The communication line that the described communication service switching device shifter of step 3. will be connected with optical network unit according to described switch-over control signal switches to described wireless user and holds equipment, makes the upward signal of communication service be switched to described wireless user and holds equipment;
The described wireless user of step 4. holds equipment to give the wireless base station with uplink signal transmissions;
The described wireless base station of step 5. sends to described wireless user with downstream signal and holds equipment, finishes the switching of communication service circuit.
8, the communication protecting method of Optical Access Network according to claim 7 is characterized in that, between described step 1 and step 2, also is provided with following steps:
Step 11. detection module sends to alarm module with the information of dropout;
Step 12. alarm module produces loss of signal alarm information, and sends this information to described wireless user and hold equipment;
The described wireless user of step 13. holds equipment to send the information that request distributes bandwidth to described wireless base station;
The devices allocation respective bandwidth is held to described wireless user in the described wireless base station of step 14., and sends the affirmation information that bandwidth has been distributed;
The described wireless user of step 15. holds equipment to send to described control module communication service is switched to the solicited message that wireless communication system carries out.
9, the communication protecting method of Optical Access Network according to claim 7; it is characterized in that; after described step 5, described communication service switching device shifter switches back described optical fiber telecommunications system with communication service by described wireless communication system, and its operation may further comprise the steps:
Amplitude, power and/or energy that the described detection module of step 6. detects from the signal of described optical line terminal are higher than described prior preset threshold, send to described control module and receive signal message;
The described control module of step 7. sends switch-over control signal to control module;
The described communication service switching device shifter of step 8. will switch in the described optical network unit with the communication line that described wireless user's end equipment is connected according to described switch-over control signal, makes the upward signal of communication service be switched to optical network unit;
The described optical network unit of step 9. is given described optical line terminal with the uplink signal transmissions of communication service, finishes the switching of communication service circuit.
10, the communication protecting method of Optical Access Network according to claim 9 is characterized in that, between described step 6 and step 7, also is provided with following steps:
The information that the described detection module of step 61. will receive signal sends to described alarm module;
The described alarm module of step 62. sends ring off signal to described wireless user's end equipment and loses warning information;
The described wireless user of step 63. holds equipment to send bandwidth release solicited message to described wireless base station;
The described wireless base station of step 64. discharges bandwidth, and sends bandwidth release confirmation to described wireless user's end equipment;
The described wireless user of step 65. holds equipment to send to described control module communication service is returned to the solicited message that described optical fiber telecommunications system is carried out.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510102568 CN100496002C (en) | 2005-09-12 | 2005-09-12 | Optical fiber access net and its communication protecting method |
| PCT/CN2006/002171 WO2007030998A1 (en) | 2005-09-12 | 2006-08-24 | A fiber access network and communication protecting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510102568 CN100496002C (en) | 2005-09-12 | 2005-09-12 | Optical fiber access net and its communication protecting method |
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| CN1750495A true CN1750495A (en) | 2006-03-22 |
| CN100496002C CN100496002C (en) | 2009-06-03 |
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| WO (1) | WO2007030998A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008131690A1 (en) * | 2007-04-26 | 2008-11-06 | Huawei Technologies Co., Ltd. | Method and device for passive optical network (pon) failure detection, as well as passive optical network (pon) system |
| CN105223392A (en) * | 2015-10-30 | 2016-01-06 | 国网新疆电力公司电力科学研究院 | Based on the Anti-fradulance of IEC62056 standard |
| CN112019266A (en) * | 2020-08-26 | 2020-12-01 | 深圳中科德能科技有限公司 | Communication link fault transfer method, device, terminal equipment and storage medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115811356B (en) * | 2022-12-12 | 2023-07-04 | 北京交科公路勘察设计研究院有限公司 | Communication main-standby optical fiber digital control switching system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020071149A1 (en) * | 2000-12-12 | 2002-06-13 | Xu Dexiang John | Apparatus and method for protection of an asynchronous transfer mode passive optical network interface |
| CN1258270C (en) * | 2003-05-29 | 2006-05-31 | 上海交通大学 | Passive optical network protection method |
| CN1283049C (en) * | 2003-06-18 | 2006-11-01 | 华为技术有限公司 | A passive optical looped network system and broken circuit protecting method |
-
2005
- 2005-09-12 CN CN 200510102568 patent/CN100496002C/en active Active
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- 2006-08-24 WO PCT/CN2006/002171 patent/WO2007030998A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008131690A1 (en) * | 2007-04-26 | 2008-11-06 | Huawei Technologies Co., Ltd. | Method and device for passive optical network (pon) failure detection, as well as passive optical network (pon) system |
| CN101296034B (en) * | 2007-04-26 | 2012-07-11 | 华为技术有限公司 | Method and apparatus for transmission of monitoring information, passive optical network system |
| US8532482B2 (en) | 2007-04-26 | 2013-09-10 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting Passive Optical Network failures, and Passive Optical Network system thereof |
| CN105223392A (en) * | 2015-10-30 | 2016-01-06 | 国网新疆电力公司电力科学研究院 | Based on the Anti-fradulance of IEC62056 standard |
| CN112019266A (en) * | 2020-08-26 | 2020-12-01 | 深圳中科德能科技有限公司 | Communication link fault transfer method, device, terminal equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN100496002C (en) | 2009-06-03 |
| WO2007030998A1 (en) | 2007-03-22 |
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