CN106712840B - A kind of implementation method and device of PON protection system - Google Patents
A kind of implementation method and device of PON protection system Download PDFInfo
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- CN106712840B CN106712840B CN201610937437.7A CN201610937437A CN106712840B CN 106712840 B CN106712840 B CN 106712840B CN 201610937437 A CN201610937437 A CN 201610937437A CN 106712840 B CN106712840 B CN 106712840B
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- optical module
- pon mac
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- pon
- splitter
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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
- H04B10/038—Arrangements for fault recovery using bypasses
-
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
Abstract
The invention discloses the implementation methods and device of a kind of PON protection system; described device includes: the first PON MAC and the 2nd PON MAC; the first PON MAC passes through CPLD connection the first optical module A and the first optical module B; the 2nd PON MAC passes through CPLD connection the second optical module A and the second optical module B; the first optical module A is connected with the first optical splitter; second optical module B is connected with the second optical splitter, forms two primary routes；The first optical module B and the second optical module A are connected with third optical splitter respectively, and the downlink of third optical splitter is separately connected the uplink of the first optical splitter and the second optical splitter again, form two protection circuits.The present invention can provide higher bandwidth for ONU, guarantee that network is unimpeded and system stability.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more specifically to a kind of test PON (Passive Opical
Network passive optical network) protection system implementation method and device.
Background technique
Passive optical network (PON) be point-to-multipoint form Optical Access Network, under hang over a PON MAC (Medium/
Media Access Control, media access control) multiple ONU (Optical Network Unit, optical network unit)
Share, compete the PON MAC offer bandwidth, the bandwidth that PON MAC can be provided be it is fixed, the ONU quantity of access is got over
More, the bandwidth that separate unit ONU is obtained is fewer.
In PON protection system, what should especially be taken seriously is trunk optical fiber to OLT (optical line termina, light
Line terminal) this section of device of PON MAC protection.The reason for this is that:
1, the PON MAC and optical module of OLT for electronic component and operates the software sharing of the electronic device, therefore,
Compared with optical fiber and optical splitter, a possibility that failure, is larger；
2, trunk optical fiber is damaged, optical splitter failure, will affect attached all ONU (user), the range of influence compared with
Greatly.
As shown in Figure 1, currently used PON system protection type has tetra- seed type of a, b, c, d.
The application environment of prior art implementation and practical PON system redundancy protecting is analyzed, the discovery prior art exists
Some disadvantages:
Type a can only protect trunk optical fiber and optical module, cannot achieve the protection of PON MAC；
Type b requires have a corresponding link to do redundancy in each of the links, this redundant link is in cold standby state, in vain
Waste, cost of implementation are larger；
Type c and type d requires have the optical module of redundancy and PON MAC, cost of implementation larger on ONU.
Summary of the invention
The main purpose of the present invention is to provide a kind of PON that system burden is small protection system implementation method and device,
Higher bandwidth can be provided for ONU, guarantee that network is unimpeded and system stability, the waste of irredundant PON MAC is, it can be achieved that master
The protection of dry optical fiber, optical module, PON MAC.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme:
A kind of PON protection system and device, comprising: the first PON MAC and the 2nd PON MAC, the first PON MAC pass through
CPLD connection the first optical module A and the first optical module B, the 2nd PON MAC pass through CPLD connection the second optical module A and second
Optical module B, the first optical module A, the first optical module B, the second optical module A, the second optical module B LoS signal be all connected to
On CPLD；The first optical module A is connected with the first optical splitter, and the second optical module B is connected with the second optical splitter, shape
At two primary routes；The first optical module B and the second optical module A are connected with third optical splitter respectively, third light point
The downlink of road device is separately connected the uplink of the first optical splitter and the second optical splitter again, forms two protection circuits；Described
The downlink of one optical splitter and the second optical splitter connects ONU.
Wherein a primary route accesses several ONU under the first optical splitter, another primary route access second
Several other ONU under optical splitter.
Two protection circuits pass through the whole that third optical splitter accesses under the first optical splitter and the second optical splitter
ONU。
The implementation method of a kind of PON protection system, comprising: four physical circuits are set in systems, based on two of them
With route, two are protection circuit；The first optical module A uplink connect by CPLD with the first PON MAC, downlink and first
Optical splitter is connected to form the first primary route, the second optical module B uplink connect by CPLD with the 2nd PON MAC,
Downlink is connected to form the second primary route with the second optical splitter；The first optical module B and the second optical module A is respectively with
Three optical splitters are connected, and the uplink that the downlink of third optical splitter connects the first optical splitter forms the first protection circuit, the
The uplink that the downlink of three optical splitters connects the second optical splitter forms the second protection circuit；When system worked well, CPLD connects
Lead to two primary routes, close two protection circuits, two primary routes work at the same time, and hang under being respectively turned on respectively multiple
ONU；Primary route or PON MAC or when optical module exception, CPLD selects a suitable protection circuit, is chosen protection circuit
PON MAC connects whole ONU, simultaneously closes off remaining three-line.
The process of the route choosing includes the following steps:
S301, each component working condition is read；
S302, judge whether two primary routes are all normal；If it is, selecting primary route into S303；Otherwise, into
Enter whether S304 detection protection circuit can be used；
First disconnect the optical module of extension wire and the connection of PON MAC before S303, the primary route of selection, then by the first optical mode
Block A is connected to the first PON MAC, and the second optical module B is connected to the 2nd PON MAC；
S304, when active link is unavailable, detection the first optical module B to the first PON MAC route whether can be used；Such as
Fruit is, into S305 communication link；Otherwise, other protection circuits are checked into S306；
S305, the protection circuit for selecting the first optical module B to the first PON MAC；First optical module B and the first PON MAC
Connection, remaining optical module and PON MAC are all off；
Whether S306, the route for detecting the second optical module A to the 2nd PON MAC can be used；If so, being connected to chain into S307
Road；Otherwise enter S308 and check other protection circuits；
S307, the protection circuit for selecting the second optical module A to the 2nd PON MAC；Second optical module A and the 2nd PON MAC
Connection, remaining optical module and PON MAC are all off；
Whether S308, the route for detecting the first optical module B to the 2nd PON MAC can be used；If so, being connected to chain into S309
Road；Otherwise enter S310 and check other protection circuits；
S309, the protection circuit for selecting the first optical module B and the 2nd PON MAC；First optical module B and the 2nd PON MAC
Connection, remaining optical module and PON MAC are all off.
Whether S310, the route for detecting the second optical module A to the first PON MAC can be used；If so, being connected to chain into S311
Road；Otherwise enter S312 to handle；
S311, the protection circuit for selecting the second optical module A to the first PON MAC；Second optical module A and the first PON MAC
Connection, remaining optical module and PON MAC are all off；
S312, so far, no available link, error handle.
Each component working condition described in step S301 includes the error signal of PON MAC and the abnormal signal of optical module.
For the present invention when system is normal, a part of ONU is linked into the first PON MAC, and a part of ONU is linked into the 2nd PON
MAC, the two PON MAC are protected all in working condition, while each other.Compare PON system guarantor shown in FIG. 1 in background technique
Type b is protected, the ONU quantity of each PON MAC access of the present invention about lacks half, and system burden is small, and higher band can be provided for ONU
Width guarantees that network is unimpeded and system stability, the waste of irredundant PON MAC.When certain route or PON MAC or optical module are sent out
When raw abnormal, whole ONU are linked on normal route (a PON MAC) by system automatic switching line, at this time all
ONU shares the bandwidth of a PON MAC, and guarantee business is not interrupted.
After the detailed description of embodiments of the present invention is read in conjunction with the figure, the features and advantages of the invention will become more
Add clear.
Detailed description of the invention
Fig. 1 is the common PON system protection type schematic diagram of the prior art；
Fig. 2 is the normal link schematic diagram of the bright embodiment of we；
Fig. 3 is the anomaly link schematic diagram of the embodiment of the present invention；
Fig. 4 is the flow diagram of the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail in one embodiment below, but it should explanation, protection of the invention
Range is not limited only to this.
As shown in Fig. 2, PON of the invention protects system and device, there are two optical modules for each PON MAC band, pass through CPLD
Connection, the LoS signal of four optical modules are also coupled on CPLD；ONU1 to n is mounted under optical splitter 1, ONU 1 to m peace
Under optical splitter 2；The 1A optical module of first PON MAC is connected with optical splitter 1, the 2B optical module of the 2nd PON MAC
It is connected with optical splitter 2, forms two primary routes；Wherein, n under first primary route access optical splitter 1
ONU, the primary route of Article 2 access m ONU under optical splitter 2.
The 1B optical module of first PON MAC and the 2A optical module of the 2nd PON MAC are connected with optical splitter 3 respectively, light
The downlink of splitter 3 is separately connected the uplink of optical splitter 1 and optical splitter 2 again, forms two protection circuits.Two protective wires
Road passes through the n+m ONU that optical splitter 3 accesses under optical splitter 1 and optical splitter 2.
As in Figure 2-4, the implementation method of PON protection system of the present invention, comprising:
Four physical circuits are set in system, two of them are primary route, and two are protection circuit；When normal work,
CPLD is connected to the 1A optical module of the first PON MAC and the 2B optical module (selecting two articles of primary routes) of the 2nd PON MAC, this
When, two PON MAC are worked at the same time, and provide high speed, unobstructed service for n+m ONU；Simultaneously close off two protection circuits, light
The optical signal of n+m ONU under splitter 3 will not be by arriving PON MAC on protection circuit (i.e. 1B, 2A optical module).
Primary route or PON MAC or when optical module exception, select a suitable protection circuit and PON MAC connection n+
M ONU (i.e. a PON MAC provides service for n+m ONU), simultaneously closes off remaining 3 route, has n or m ONU will not
PON MAC switching (relying on selected route) occurs.
The process of route choosing of the present invention specifically includes the following steps:
S301, each component working condition is read；It is inputted including err1, LoS_1A, LoS_1B, err2, LoS_2A, LoS_2B
Signal；Wherein, err1 and err2 signal are software input, are found in excessive temperature, PON MAC or board in software running process
Remaining device it is abnormal etc., this signal is set, shows this PON MAC cisco unity malfunction；LoS_1A,LoS_1B,LoS_2A,
LoS_2B is respectively corresponding optical module LoS signal, this signal shows that optical signal is lost when being arranged, it is meant that fibre circuit is abnormal.
S302, judge whether two active links are all normal；If it is, selecting primary route into S303；Otherwise into
Enter whether S304 detection protection circuit can be used；Link described herein is available, refers to err1, LoS_1A, err2, LoS_2B signal
It is not set simultaneously.
S303, selection primary route 1A, 2B；First guarantee the connection of disconnection 1B, 2A optical module and PON MAC, then makes 1A light
Module is connected to the first PON MAC, and 2B optical module is connected to the 2nd PON MAC.
S304, when active link is unavailable, detect whether 1B route and the first PON MAC can be used；If so, into
Otherwise S305 communication link enters S306 and checks other protection circuits；When LoS_1B, err1 are not set simultaneously, 1B to first
PON MAC link is available.
S305, selection 1B to the first PON MAC link；1B optical module is connected to the first PON MAC, remaining optical module with
PON MAC is all off.
S306: whether detection 2A route and the 2nd PON MAC can be used；If so, into S307 communication link；Otherwise enter
S308 checks other protection circuits.
S307, selection 2A to the 2nd PON MAC link；2A optical module is connected to the 2nd PON MAC, remaining optical module with
PON MAC is all off.
Whether S308, detection 1B route and the 2nd PON MAC can be used；If so, into S309 communication link；Otherwise enter
S310 checks other protection circuits.
S309: selection 1B to the 2nd PON MAC link；1B optical module is connected to the 2nd PON MAC, remaining optical module with
PON MAC is all off.
S310: whether detection 2A route and the first PON MAC can be used；If so, into S311 communication link；Otherwise enter
S312 processing.
S311, selection 2A to the first PON MAC link；2A optical module is connected to the first PON MAC, remaining optical module with
PON MAC is all off.
S312: so far, no available link, error handle.
The present invention uses two primary routes, and two protection circuits, under normal circumstances, two primary routes are all in work
State shares actual service traffics, realizes irredundant PON MAC waste, the bandwidth capacity doubled；Meanwhile it is primary
When route or single PON MAC exception, by protection circuit and another PON MAC, whole ONU are accessed, are realized to trunk light
Fibre, optical module, PON MAC protection.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (6)
1. a kind of PON protects system and device characterized by comprising the first PON MAC and the 2nd PON MAC, described first
PON MAC passes through CPLD the second light of connection by CPLD connection the first optical module A and the first optical module B, the 2nd PON MAC
The LoS letter of modules A and the second optical module B, the first optical module A, the first optical module B, the second optical module A, the second optical module B
It number is all connected on CPLD；The first optical module A is connected with the first optical splitter, the second optical module B and the second optical branching
Device is connected, and forms two primary routes；The first optical module B and the second optical module A are connected with third optical splitter respectively
It connects, the downlink of third optical splitter is separately connected the uplink of the first optical splitter and the second optical splitter again, forms two protections
Route；The downlink of first optical splitter and the second optical splitter connects ONU.
2. a kind of PON as described in claim 1 protects system and device, it is characterised in that: wherein one article of primary route access the
Several ONU under one optical splitter, another primary route access several ONU other under the second optical splitter.
3. a kind of PON as described in claim 1 protects system and device, it is characterised in that: two protection circuits pass through third
Optical splitter accesses whole ONU under the first optical splitter and the second optical splitter.
4. a kind of implementation method of PON protection system characterized by comprising four physical circuits are set in systems, wherein
Two are primary route, and two are protection circuit；First optical module A uplink connect by CPLD with the first PON MAC, downlink and
First optical splitter is connected to form the first primary route, the second optical module B uplink connect by CPLD with the 2nd PON MAC,
Downlink is connected to form the second primary route with the second optical splitter；First optical module B and the second optical module A respectively with third light
Splitter is connected, and the uplink that the downlink of third optical splitter connects the first optical splitter forms the first protection circuit, third light
The uplink that the downlink of splitter connects the second optical splitter forms the second protection circuit；When system worked well, CPLD connection two
The primary route of item closes two protection circuits, and two primary routes work at the same time, and is respectively turned on the respectively lower multiple ONU hung；It is main
When with route or PON MAC or optical module exception, CPLD selects a suitable protection circuit, is chosen the PON of protection circuit
MAC connects whole ONU, simultaneously closes off remaining three-line.
5. a kind of implementation method of PON protection system as claimed in claim 4, which is characterized in that the mistake of the route choosing
Journey includes the following steps:
S301, each component working condition is read；
S302, judge whether two primary routes are all normal；If it is, selecting primary route into S303；Otherwise, enter
Whether S304 detection protection circuit can be used；
First disconnect the optical module of extension wire and the connection of PON MAC before S303, the primary route of selection, then by the first optical module A
It is connected to the first PON MAC, the second optical module B is connected to the 2nd PON MAC；
S304, when active link is unavailable, detection the first optical module B to the first PON MAC route whether can be used；If
It is, into S305 communication link；Otherwise, other protection circuits are checked into S306；
S305, the protection circuit for selecting the first optical module B to the first PON MAC；First optical module B is connected to the first PON MAC,
Remaining optical module and PON MAC are all off；
Whether S306, the route for detecting the second optical module A to the 2nd PON MAC can be used；If so, into S307 communication link；
Otherwise enter S308 and check other protection circuits；
S307, the protection circuit for selecting the second optical module A to the 2nd PON MAC；Second optical module A is connected to the 2nd PON MAC,
Remaining optical module and PON MAC are all off；
Whether S308, the route for detecting the first optical module B to the 2nd PON MAC can be used；If so, into S309 communication link；
Otherwise enter S310 and check other protection circuits；
S309, the protection circuit for selecting the first optical module B and the 2nd PON MAC；First optical module B is connected to the 2nd PON MAC,
Remaining optical module and PON MAC are all off；
Whether S310, the route for detecting the second optical module A to the first PON MAC can be used；If so, into S311 communication link；
Otherwise enter S312 to handle；
S311, the protection circuit for selecting the second optical module A to the first PON MAC；Second optical module A is connected to the first PON MAC,
Remaining optical module and PON MAC are all off；
S312, so far, no available link, error handle.
6. a kind of implementation method of PON protection system as claimed in claim 5, it is characterised in that: each portion described in step S301
Part working condition includes the error signal of PON MAC and the abnormal signal of optical module.
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| CN201610937437.7A CN106712840B (en) | 2016-10-25 | 2016-10-25 | A kind of implementation method and device of PON protection system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106452565B (en) * | 2015-08-11 | 2019-04-12 | 北京智芯微电子科技有限公司 | A kind of the electric power acquisition device and its working method of the bis- MAC protections of double PON |
| CN107483103A (en) * | 2017-10-11 | 2017-12-15 | 深圳市新格林耐特通信技术有限公司 | OLT device and OLT device redundancy protected method |
| CN107835047A (en) * | 2017-11-27 | 2018-03-23 | 上海市共进通信技术有限公司 | The system for realizing that ONU sides Type C optical links switch protection is detected based on LOS |
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