CN106788925A - Method and optical line terminal for managing logical link identifier - Google Patents
Method and optical line terminal for managing logical link identifier Download PDFInfo
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- CN106788925A CN106788925A CN201510827978.XA CN201510827978A CN106788925A CN 106788925 A CN106788925 A CN 106788925A CN 201510827978 A CN201510827978 A CN 201510827978A CN 106788925 A CN106788925 A CN 106788925A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1221—Wireless traffic scheduling based on age of data to be sent
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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Abstract
The invention discloses method and optical line terminal for managing logical link identifier.The method includes：" occupancy " state of the LLID of the ONU is updated to " release " state, and detect whether the LLID is released by OLT after ONU solution registrations are detected；If the LLID is released, " release " state of the LLID is updated to " vacant " state." occupancy " state for solving the LLID of the ONU of registration is updated to by " release " state by OLT, and detecting after the LLID is released, " release " state of the LLID is updated to " vacant " state, solve LLID present in prior art and other new ONU for reaching the standard grade are assigned to during release, the ONU that causes newly to reach the standard grade cannot complete the problem of registration, ensure the open-minded of follow-up broadband services, improve the customer experience of broadband user.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method and light for managing logical link identifier
Road terminal.
Background technology
According to the regulation of IEEE 802.3-2012 standards, EPON (Ethernet Passive Optical Network,
Ethernet passive optical network) system used with MAC (Media Access Control, medium access control) control sublayer
Based on MPCP (Multi Point Control Protocol, Multi-point Control Protocol) mechanism, MPCP passes through message, state machine
The topological structure of access P2MP (Point 2Multiple Point, point-to-multipoint) is controlled with timer.MPCP is in OLT
Between (Optical Line Terminal, optical line terminal) and ONU (Optical Network Unit, optical network unit)
Define a kind of controlling mechanism and carry out sending and receiving for coordination data.MPCP functions are completed based on special protocol data message
, i.e. MPCP data cells define 5 kinds of MPCP data cells at present, including：GATE (allows the ONU for receiving GATE frames to stand
I.e. or in specified time period send data), REPORT (state of ONU is reported to OLT, including which the ONU is synchronized with
Timestamp and whether have data need send), REGISTER_REQ (register code processing procedure in ask registration),
REGISTER (notifying that ONU has identified registration request in code processing procedure is registered), REGISTER_ACK (are advised in registration
Accreditation verification is represented in journey processing procedure).
The new ONU for reaching the standard grade can carry out the process that a MPCP has found registration, and OLT can inform ONU by REGISTER message
Succeed in registration and for it distributes a logical link identifier (Logical Link Identifier, LLID), in OLT and ONU
Between set up a logical links for unicast.And when OLT requirement ONU solution registrations, equally REGISTER message can be sent to ONU
Request releases port assignment and discharges LLID.After LLID is released, OLT can assign them to other ONU and use.
Part prescriber forms of the table 1 according to IEEE 802.3-2012 standards
| Side-play amount | Data field | Former lead code/SFD | Lead code/SFD after replacement |
| 1 | - | 0×55 | It is identical |
| 2 | - | 0×55 | It is identical |
| 3 | SLD | 0×55 | 0×d5：SLD indicates LLID and CRC bit to put |
| 4 | - | 0×55 | It is identical |
| 5 | - | 0×55 | It is identical |
| 6 | LLID[15:8] | 0×55 | <Mode, logical_link_id [14:8]> |
| 7 | LLID[7:0] | 0×55 | <logical_link_id[7:0]> |
| 8 | CRC8 | 0×d5 | Calculate the CRC from data between 3 to 7 bytes |
Table 1 shows and specified according to the part of IEEE 802.3-2012 standards.In the leading of EPON system ether network packet
6th and the 7th byte of code has increased logical link identifier (Logical Link Identifier, LLID) field newly.OLT leads to
Cross for ONU distributes LLID, for setting up a logical links for unicast between OLT and ONU.LLID fields have two bytes,
Totally 16 bit (bit), are combined by variable MODE and LLID logical_link_id and constituted.Wherein, Mode variables
It is 1bit, 0 is always in ONU MAC, can is 1 or 0 in OLT MAC.When LLID be used for represent a single copy broadcast or
When being multicast path, 1 is set to；When unicast data is represented, 0 is set to.In addition, Logical_link_id is 15bit, its value is 0
During × 7FFF, the broadcast frame to unregistered ONU MAC is represented, its outside 0 × 7FFF can be used for the ONU MAC after registration
It is worth.It should be noted that<Mode, logical_link_id [14:8]>In, mode is mapped to TXD [7], logical_
Link_id [14] is mapped to TXD [6], and logical_link_id [8] is mapped to TXD [0]；<logical_link_id[7:
0]>In, logical_link_id [7] is mapped to TXD [7], and logical_link_id [0] is mapped to TXD [0].
There is LLID (i.e. the LLID does not discharge also completely) during release in current network, OLT assigns them to other
The new ONU for reaching the standard grade, the ONU that causes newly to reach the standard grade cannot complete the problem of registration.The reason for causing the problem is very complicated, for example：OLT is solved
Registration ONU, asks its release LLID, but when the ONU is rogue ONU, is not carried out the request of OLT, and release should not in time
LLID.Now, OLT thinks that the LLID should have been released, and in the case where verification detection is not carried out, duplicate allocation gives it
The ONU that he newly reaches the standard grade, so as to the LLID for causing above-mentioned ONU conflicts, the ONU that newly reaches the standard grade cannot complete registration, have impact on follow-up width
With the open-minded of business.
The content of the invention
The present invention need solve a technical problem be：LLID is assigned to other during release in the prior art
The new ONU for reaching the standard grade, the ONU that causes newly to reach the standard grade cannot complete registration.
According to the first aspect of the invention, there is provided a kind of method for managing logical link identifier, including：OLT
After ONU solution registrations are detected, " occupancy " state of the LLID of the ONU is updated to " release " state, and detect described
Whether LLID is released；And if the LLID is released, " release " state of the LLID is updated into " vacant " shape
State.
In certain embodiments, it is described also to include for managing the method for logical link identifier：If the LLID not by
Release, then after the delay scheduled time cycle, re-execute and the step of whether LLID is released detected.
In certain embodiments, detect that the step of whether LLID is released includes：Judge within the preset count cycle,
Whether whether the ONU is online, and includes the LLID in uplink message；If within the preset count cycle, the ONU does not exist
The LLID is not included in line, and uplink message, it is determined that the LLID is released；If within the preset count cycle, the ONU
Online, or in uplink message the LLID is included, it is determined that the LLID is not released.
In certain embodiments, it is described also to include for managing the method for logical link identifier：The OLT is being detected
It is the new ONU distribution LLID that reach the standard grade after in the presence of the new ONU that reaches the standard grade, then " vacant " state for the LLID that will be distributed is updated to
" occupancy " state.
In certain embodiments, it is described also to include for managing the method for logical link identifier：The OLT is being detected
Comprising after identical LLID in two uplink messages of ONU, in described two ONU, the ONU distribution reached the standard grade after being is new
LLID, is designated " occupancy " state, and the LLID of the ONU for first reaching the standard grade is designated into " occupancy " state by newly assigned LLID.
In certain embodiments, described " vacant " state representation LLID is in idle condition, is not yet assigned to ONU；Institute
State " occupancy " state representation LLID and be in use state, the ONU for already being allocated to reach the standard grade is used；And " release " state
Represent that OLT has requested that ONU discharges LLID, during the LLID is released, but be not yet changed into " vacant " state.
According to the second aspect of the invention, there is provided a kind of optical line terminal, including：First detection module, in inspection
After measuring ONU solution registrations, " occupancy " state of the LLID of the ONU is updated to " release " state, and detect that the LLID is
It is no to be released；And second detection module, for detecting after the LLID is released, by " release " state of the LLID
It is updated to " vacant " state.
In certain embodiments, if the first detection module is additionally operable to detect the LLID and is not released, prolonging
After slow predetermined period of time, re-execute whether the detection LLID is released.
In certain embodiments, the first detection module is additionally operable to judge within the preset count cycle that whether is the ONU
Online, and in uplink message whether the LLID is included；If within the preset count cycle, the ONU is not online, and uplink message
In do not include the LLID, it is determined that the LLID is released；If within the preset count cycle, the ONU is online, or up
The LLID is included in message, it is determined that the LLID is not released.
In certain embodiments, the optical line terminal also includes：3rd detection module, for detecting the presence of newly
It is the new ONU distribution LLID that reach the standard grade after line ONU, then " vacant " state for the LLID that will be distributed is updated to " occupancy " shape
State.
In certain embodiments, the optical line terminal also includes：4th detection module, for detecting two ONU
Uplink message in comprising after identical LLID, in described two ONU, the ONU reached the standard grade after being distributes new LLID, will newly divide
The LLID for matching somebody with somebody is designated " occupancy " state, and the LLID of the ONU for first reaching the standard grade is designated into " occupancy " state.
In certain embodiments, described " vacant " state representation LLID is in idle condition, is not yet assigned to ONU；Institute
State " occupancy " state representation LLID and be in use state, the ONU for already being allocated to reach the standard grade is used；And " release " state
Represent that OLT has requested that ONU discharges LLID, during the LLID is released, but be not yet changed into " vacant " state.
In the present invention, " occupancy " state for solving the LLID of the ONU of registration is updated to by " release " state by OLT, and
Detect after the LLID is released, " release " state of the LLID is updated to " vacant " state, solve in the prior art
The LLID of presence is assigned to other new ONU for reaching the standard grade during release, and the ONU that causes newly to reach the standard grade cannot complete asking for registration
Topic, it is ensured that follow-up broadband services it is open-minded, improve the customer experience of broadband user.
By referring to the drawings to the detailed description of exemplary embodiment of the invention, further feature of the invention and its
Advantage will be made apparent from.
Brief description of the drawings
The Description of Drawings embodiments of the invention of a part for specification are constituted, and is used to solve together with the description
Release principle of the invention.
Referring to the drawings, according to following detailed description, the present invention can be more clearly understood from, wherein：
Fig. 1 shows the flow of the method for managing logical link identifier according to some embodiments of the invention
Figure.
Fig. 2 be schematically show optical line terminal according to some embodiments of the invention and optical network unit composition be
System schematic diagram.
Fig. 3 is to schematically show to be constituted according to the optical line terminal and optical network unit of other embodiments of the invention
System schematic.
Fig. 4 shows the flow of the method for managing logical link identifier according to other embodiments of the invention
Figure.
Fig. 5 shows the flow of the method for managing logical link identifier according to other embodiments of the invention
Figure.
Fig. 6 is the structural representation for schematically showing optical line terminal according to some embodiments of the invention.
Fig. 7 is the structural representation for schematically showing the optical line terminal according to other embodiments of the invention.
Specific embodiment
Describe various exemplary embodiments of the invention in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments do not limit this
The scope of invention.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
The description only actually at least one exemplary embodiment is illustrative below, never as to the present invention
And its any limitation applied or use.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing a part for specification.
In all examples shown here and discussion, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
Fig. 1 shows the flow of the method for managing logical link identifier according to some embodiments of the invention
Figure.
In step S11, " occupancy " state of the LLID of the ONU is updated to " release by OLT after ONU solution registrations are detected
Put " state, and detect whether the LLID is released.
In step S12, if the LLID is released, " release " state of the LLID is updated to " vacant " state.
In this embodiment, be updated to for " occupancy " state of the LLID of the ONU after ONU solution registrations are detected by OLT
" release " state, and detecting after the LLID is released, " release " state of the LLID is updated to " vacant " state, solve
The LLID present in prior art that determined is assigned to other new ONU for reaching the standard grade during release, and causing newly to reach the standard grade ONU cannot
Complete the problem of registration.
In an embodiment of the present invention, " vacant " state representation LLID is in idle condition, is not yet assigned to ONU；" account for
With " in use state, the ONU for already being allocated to reach the standard grade is used state representation LLID；" release " state representation OLT has been asked
Ask ONU to discharge LLID, during the LLID is released, but be not yet changed into " vacant " state.In " release " state
LLID can not be reused.By increasing " release " state, the perfect condition managing of LLID, it is to avoid OLT will discharge
The LLID duplicate allocations of state give the new ONU for reaching the standard grade, the failure that the ONU that causes newly to reach the standard grade cannot be registered.
In an embodiment of the present invention, OLT is each PON (Passive Optical Network, EPON) mouth
Under set up LLID condition managing list items, the state for effectively managing each LLID.The state of each LLID is respectively labeled as
" vacant ", " occupancy " and " release " three kinds of marks.The state of above-mentioned three kinds of LLID can be updated in real time, it is ensured that LLID has
There is utilization rate higher.
The service condition of each LLID can also be recorded in LLID condition managing list items.For example, " occupancy " state
LLID is used by which ONU, can record the MAC Address and ONU ID of the ONU.Again for example, the LLID of " release " state,
Which can record during being discharged by ONU.
In an embodiment of the present invention, can also include for managing the method for logical link identifier：If LLID not by
Release, then after the delay scheduled time cycle, re-execute and the step of whether LLID is released detected.
In certain embodiments, the step of whether detection LLID is released can include：Judge within the preset count cycle,
Whether the ONU for solving registration is online, and whether the LLID of the ONU of solution registration is included in uplink message；If in the preset count cycle
Interior, the ONU is not online, and do not include the LLID in uplink message, it is determined that LLID is released；If within the preset count cycle,
The ONU is online, or the LLID is included in uplink message, it is determined that the LLID is not released.
In this embodiment, OLT is after ONU solutions registration (such as OLT solution registration ONU or ONU voluntarily solve registration) is detected,
Then opening timing counter, starts counting up.The data of the timer conter can be configured.OLT will trigger right during counting
The real-time detection of LLID " release " state.Within the preset count cycle (such as 3 cycles) of timer conter, OLT carries out reality
When detect：On the one hand, whether comprising the LLID that should be released in uplink message, on the other hand, detection solves registration for detection
Whether ONU is still online, if detecting, solution registration ONU is online or uplink message includes the LLID, it is determined that LLID is not released；
If detect solution registration ONU does not include the LLID online and in uplink message, it is determined that LLID has been released.Tied according to detection
Fruit updates LLID condition managing list items.Its state is updated to " vacant " state if LLID is released, if LLID is not released
Put, keep its " release " state constant.
In an embodiment of the present invention, can also include for managing the method for logical link identifier：OLT is being detected
It is the ONU distribution LLID that newly reach the standard grade after in the presence of the new ONU that reaches the standard grade, then " vacant " state for the LLID that will be distributed is updated to " account for
With " state.
In an embodiment of the present invention, can also include for managing the method for logical link identifier：OLT is being detected
Comprising after identical LLID in two uplink messages of ONU, in two ONU, the ONU reached the standard grade after being distributes new LLID,
Newly assigned LLID is designated " occupancy " state, and the LLID of the ONU for first reaching the standard grade is designated " occupancy " state.This can be with
Prevent that because LLID conflicts cause the ONU for newly reaching the standard grade the problem of registration cannot be completed.
Fig. 2 be schematically show optical line terminal according to some embodiments of the invention and optical network unit composition be
System schematic diagram.OLT and ONU1, ONU2 and ONU3 are shown in Fig. 2.LLID condition managings list item corresponding with ONU is for example such as
Shown in table 2.
Table 2
| No. LLID | State |
| LLID1 | Take |
| LLID2 | Release |
| LLID3 | It is vacant |
| …… | …… |
| LLIDn | It is vacant |
With reference to shown in Fig. 2 and Biao 2, OLT detects ONU2 solution registrations, is " to release by the status indicator of the LLID2 of the ONU2
Put " state, show that the LLID2 discharges, and be not completely released.And when there is the ONU3 registration requests newly reached the standard grade, OLT is
The new ONU3 for reaching the standard grade distributes LLID3 (being now " vacant " state), without distributing LLID2 for ONU3, due to not occurring
LLID conflicts, and the ONU3 for newly reaching the standard grade is quickly completed registration, the efficiency for finding registration is improve, while also ensure that follow-up width
With the open-minded of business, the customer experience of broadband user is improved.
Fig. 3 is to schematically show to be constituted according to the optical line terminal and optical network unit of other embodiments of the invention
System schematic.OLT and ONU1, ONU2, ONU3, ONU4 and ONU5 are shown in Fig. 3.LLID state pipes corresponding with ONU
Reason list item is for example as shown in table 3.
Table 3
| No. LLID | State 1 | State 2 | State 3 | ONU is identified |
| LLID1 | Take | Take | Take | ONU MAC1 |
| LLID2 | Take | Release | Release | ONU MAC2 |
| LLID3 | It is vacant | Take | Take | ONU MAC3 |
| LLID4 | Release | It is vacant | Take | ONU MAC5 |
| …… | …… | …… | …… | …… |
| LLIDn | It is vacant | It is vacant | It is vacant | —— |
OLT creates the management list item of LLID states, and as shown in table 3, each LLID has its status indicator in the list item,
Have three kinds of status indicators, respectively " vacant ", " occupancy " and " release ".OLT while its state is identified for LLID,
The service condition of LLID can effectively be managed, be identified the LLID is taken or discharged by which ONU, MAC Address of ONU etc.
Information can be managed collectively, and be recorded in LLID condition managing list items, obtain real-time update maintenance.
With reference to shown in Fig. 3 and Biao 3, ONU1 is online, and LLID1 is taken by ONU1, and the state of LLID1 is " occupancy " state.OLT
Solve and register ONU2, the LLID2 of ONU2 is not completely released, and the state of LLID2 is changed into " release " state from " occupancy " state.
ONU3 newly reaches the standard grade, and during registration, OLT is its distribution LLID3 to ONU3, and the state of LLID3 is changed into " accounting for from " vacant "
With ".ONU4 shuts down or goes offline, then the state of its allocated LLID4 is changed into " vacant " from " release ", such as LLID4 in table 3
State 1 to state 2 change.ONU5 newly reaches the standard grade, the LLID4 that OLT has been completely released for the ONU5 distribution of new registration,
The state of LLID4 is changed into " occupancy " from " vacant ", such as in table 3 state 2 of LLID4 to state 3 change.Implementation of the invention
Example is reduced due to the failure problems of ONU discovery collisions caused by logical link identifier duplicate allocation, effective lifting ONU hairs
The success rate now registered, reduces the time that ONU registrations are reached the standard grade, and the experience for improving broadband user is perceived.
Fig. 4 shows the flow of the method for managing logical link identifier according to other embodiments of the invention
Figure.
In step S41, OLT is the ONU distribution LLID that newly reaches the standard grade after the new ONU that reaches the standard grade is detected the presence of.
" vacant " state for the LLID that will be distributed in step S42, OLT is updated to " occupancy " state.
In step S43, OLT performs real-time detection to the LLID of " occupancy " state.
In step S44, judge whether to detect in two uplink messages of ONU comprising identical LLID.If it is, mistake
Journey enters step S45, otherwise return to step S43.
In step S45, the ONU that OLT reaches the standard grade after being distributes new LLID, and newly assigned LLID is designated into " occupancy " shape
State, and the LLID of the ONU for first reaching the standard grade is designated " occupancy " state.
In this embodiment, after OLT has been detected newly to reach the standard grade ONU and be assigned with LLID for it, then LLID states are updated
Management list item, is " occupancy " by the LLID status indicators；And real-time detection is performed to the LLID of " occupancy " state, prevent due to
LLID conflicts cause the problem that the ONU for newly reaching the standard grade cannot complete to register.
Fig. 5 shows the flow of the method for managing logical link identifier according to other embodiments of the invention
Figure.
In step S51, OLT detections have ONU to solve registration.For example, OLT solution registrations ONU or ONU voluntarily solves registration etc..
" occupancy " state of the LLID of the ONU for registering the solution in step S52, OLT is updated to " release " state.
In step S53, opening timing counter, and trigger the detection that OLT opens " release " state.
In step S54, judge within the preset count cycle, whether the ONU of solution registration is online.If it is, process is entered
Enter step S55, else process enters step S56.
In step S55, OLT determines that the LLID is not released, and after the delay scheduled time cycle, re-executing detection should
Whether LLID is released.
In step S56, judge within the preset count cycle whether the LLID of the ONU of solution registration is included in uplink message.
If it is, process enters step S55, else process enters step S57.
In step S57, OLT determines that the LLID is released, and " release " state of the LLID is updated into " vacant " state.
In this embodiment, after OLT detects OLT solution registrations ONU, ONU voluntarily solves the events such as registration, OLT updates
LLID condition managing list items, are " release " by the LLID status indicators.Meanwhile, opening timing counter, in the preset count cycle
In (such as 3 counting cycle), it is not online to detect solution registration ONU, and does not include the LLID in uplink message, then confirming should
LLID has been released, and updates LLID condition managing list items, and the LLID status indicators are " vacant ", if detecting solution registration
ONU is online, or uplink message still includes the LLID, then confirm that the LLID is not released, and updates LLID condition managing list items, will
The LLID states are still designated " release ".By above-mentioned LLID condition managings and testing mechanism, it is ensured that LLID condition management tables
The state of LLID obtains real-time update in, improves the utilization rate of LLID.
It should be appreciated by those skilled in the art that said sequence the step of for the above method is merely to illustrate,
The step of method of the present invention, is not limited to order described in detail above, unless specifically stated otherwise.
Fig. 6 is the structural representation for schematically showing optical line terminal according to some embodiments of the invention.Such as Fig. 6 institutes
Show, optical line terminal 60 includes：The detection module 62 of first detection module 61 and second.
First detection module 61 is used for after ONU solution registrations are detected, and " occupancy " state of the LLID of the ONU is updated to
" release " state, and detect whether the LLID is released.
Second detection module 62 is used to detect after LLID is released, and " release " state of the LLID is updated to " not
Take " state.
The embodiment solves LLID present in prior art and is assigned to what other were newly reached the standard grade during release
ONU, the ONU that causes newly to reach the standard grade cannot complete the problem of registration.
In an embodiment of the present invention, " vacant " state representation LLID is in idle condition, is not yet assigned to ONU；" account for
With " in use state, the ONU for already being allocated to reach the standard grade is used state representation LLID；" release " state representation OLT has been asked
Ask ONU to discharge LLID, during the LLID is released, but be not yet changed into " vacant " state.
In an embodiment of the present invention, if first detection module 61 can be also used for detecting LLID and not be released,
After the delay scheduled time cycle, re-execute and detect whether the LLID is released.
In an embodiment of the present invention, first detection module 61 can be also used for judging within the preset count cycle that solution is noted
Whether the ONU of volume is online, and whether the LLID of the ONU of solution registration is included in uplink message；If within the preset count cycle, should
ONU is not online, and do not include the LLID in uplink message, it is determined that the LLID is released；If within the preset count cycle, should
ONU is online, or the LLID is included in uplink message, it is determined that the LLID is not released.
Fig. 7 is the structural representation for schematically showing the optical line terminal according to other embodiments of the invention.Such as Fig. 7
Shown, optical line terminal 70 includes：The detection module 72 of first detection module 71 and second.The first detection module 71 and this second
Detection module 72 is similar with the detection module 62 of first detection module 61 and second in Fig. 6 respectively, repeats no more here.
In an embodiment of the present invention, optical line terminal 70 can also include：3rd detection module 73, for detecting
It is the ONU distribution LLID that newly reach the standard grade after in the presence of the new ONU that reaches the standard grade, then " vacant " state for the LLID that will be distributed is updated to " account for
With " state.
In an embodiment of the present invention, optical line terminal 70 can also include：4th detection module 74, for detecting
Comprising after identical LLID in two uplink messages of ONU, in two ONU, the ONU reached the standard grade after being distributes new LLID,
Newly assigned LLID is designated " occupancy " state, and the LLID of the ONU for first reaching the standard grade is designated " occupancy " state.
In embodiments of the invention, optical line terminal passes through detection of each detection module to LLID states, it is ensured that LLID
The state of LLID obtains real-time update in condition managing list item, improves the utilization rate of LLID.
So far, the present invention is described in detail.In order to avoid covering design of the invention, without description this area, institute is public
Some details known.Those skilled in the art can be appreciated how to implement technology disclosed herein as described above, completely
Scheme.
The method of the present invention and system may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, any combinations of firmware realize the method for the present invention and system.The said sequence of the step of for methods described
Order described in detail above is not limited to merely to illustrate, the step of the method for the present invention, it is special unless otherwise
Do not mentionlet alone bright.Additionally, in certain embodiments, also the present invention can be embodied as recording program in the recording medium, these programs
Including the machine readable instructions for realizing the method according to the invention.Thus, the present invention also covering storage is for performing basis
The recording medium of the program of the method for the present invention.
Although being described in detail to some specific embodiments of the invention by example, the skill of this area
Art personnel it should be understood that above example is merely to illustrate, rather than in order to limit the scope of the present invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This hair
Bright scope is defined by the following claims.
Claims (12)
1. a kind of method for managing logical link identifier, it is characterised in that including：
Optical line terminal OLT detect optical network unit ONU solution registration after, by the logical link identifier LLID of the ONU
" occupancy " state be updated to " release " state, and detect whether the LLID is released；And
If the LLID is released, " release " state of the LLID is updated to " vacant " state.
2. the method for being used to manage logical link identifier according to claim 1, it is characterised in that also include：
If the LLID is not released, after the delay scheduled time cycle, re-execute whether the detection LLID is released
The step of putting.
3. the method for being used to manage logical link identifier according to claim 2, it is characterised in that
Detect that the step of whether LLID is released includes：
Judge within the preset count cycle, whether the ONU is online, and whether the LLID is included in uplink message；
If within the preset count cycle, the ONU is not online, and do not include the LLID in uplink message, it is determined that described
LLID is released；
If within the preset count cycle, the ONU is online, or the LLID is included in uplink message, it is determined that the LLID
It is not released.
4. the method for being used to manage logical link identifier according to any in claim 1-3, it is characterised in that also wrap
Include：
The OLT is the new ONU distribution LLID that reach the standard grade after the new ONU that reaches the standard grade is detected the presence of, then the LLID's that will be distributed
" vacant " state is updated to " occupancy " state.
5. the method for being used to manage logical link identifier according to claim 1, it is characterised in that also include：
The OLT after in detecting two uplink messages of ONU comprising identical LLID, in described two ONU, after being on
The ONU of line distributes new LLID, newly assigned LLID is designated into " occupancy " state, and the LLID of the ONU for first reaching the standard grade is marked
It is " occupancy " state to know.
6. the method for being used to manage logical link identifier according to claim 1, it is characterised in that
" vacant " the state representation LLID is in idle condition, is not yet assigned to ONU；
" occupancy " the state representation LLID is in use state, and the ONU for already being allocated to reach the standard grade is used；And
" release " the state representation OLT has requested that ONU discharges LLID, during the LLID is released, but still
It is unchanged as " vacant " state.
7. a kind of optical line terminal, it is characterised in that including：
First detection module, for after ONU solution registrations are detected, " occupancy " state of the LLID of the ONU being updated to " release
Put " state, and detect whether the LLID is released；And
Second detection module, for detecting after the LLID is released, " release " state of the LLID is updated to " not
Take " state.
8. optical line terminal according to claim 7, it is characterised in that
If the first detection module is additionally operable to detect the LLID and is not released, after the delay scheduled time cycle,
Re-execute whether the detection LLID is released.
9. optical line terminal according to claim 8, it is characterised in that
The first detection module is additionally operable to judge within the preset count cycle whether the ONU is online, and is in uplink message
It is no comprising the LLID；If within the preset count cycle, the ONU is not online, and do not include the LLID in uplink message, then
Determine that the LLID is released；If within the preset count cycle, the ONU is online, or the LLID is included in uplink message,
Then determine that the LLID is not released.
10. according to any optical line terminals of claim 7-9, it is characterised in that also include：
3rd detection module, for after the new ONU that reaches the standard grade is detected the presence of, being the new ONU distribution LLID that reach the standard grade, then will divide
" vacant " state for the LLID for matching somebody with somebody is updated to " occupancy " state.
11. optical line terminals according to claim 7, it is characterised in that also include：
4th detection module, for after in detecting two uplink messages of ONU comprising identical LLID, described two
In ONU, the ONU that is reached the standard grade after being distributes new LLID, newly assigned LLID is designated into " occupancy " state, and will first reach the standard grade
The LLID of ONU is designated " occupancy " state.
12. optical line terminals according to claim 7, it is characterised in that
" vacant " the state representation LLID is in idle condition, is not yet assigned to ONU；
" occupancy " the state representation LLID is in use state, and the ONU for already being allocated to reach the standard grade is used；And
" release " the state representation OLT has requested that ONU discharges LLID, during the LLID is released, but still
It is unchanged as " vacant " state.
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