CN105703873B - The immediate processing method that ONU passages switch in TWDM PON systems and the system - Google Patents
The immediate processing method that ONU passages switch in TWDM PON systems and the system Download PDFInfo
- Publication number
- CN105703873B CN105703873B CN201610038459.XA CN201610038459A CN105703873B CN 105703873 B CN105703873 B CN 105703873B CN 201610038459 A CN201610038459 A CN 201610038459A CN 105703873 B CN105703873 B CN 105703873B
- Authority
- CN
- China
- Prior art keywords
- message
- pon
- onu
- passage
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses the immediate processing method that ONU passages in a kind of TWDM PON systems and the system switch, it is related to TWDM PON fields.This method comprises the following steps：After OLT issues passage handover request message, channel parameters collection, the burst parameter collection of purpose passage are sent；Increase the SFC of passage handover request message, postpone the starting point of OLT switchings；If OLT receives NACK after SFC moment points, cancel switching；ONU is not suitable for, in purpose channels operation, terminating this switching；If being adapted to, to be switched start time point is waited；Switch start time point to reach, ONU enters O8.1；After ONU step-out alarm eliminates, into O8.2, do not learn profile message in O8.2, confirm to enter O9 when the operation wavelength after adjusting is consistent with purpose channel wavelength, send Complete_U message.The present invention can improve passage switching efficiency, shorten switching time, reduce packet loss, avoid invalid handoff procedure.
Description
Technical field
The present invention relates to TWDM-PON fields, are specifically related to ONU passages in a kind of TWDM-PON systems and the system and cut
The immediate processing method changed.
Background technology
TWDM-PON(Time Wavelength Division Multiplexing-Passive
OpticalNetwork, time-division WDM-PON) system support ONU (Optical Network Unit, light net
Network unit) worked in multiple wavelength channels.OLT (Optical Line Termination, optical line terminal) is carried out to ONU
During management, it is possible to specify ONU is operated on specific wavelength channel, and this just needs channel management agreement to realize that ONU exists
Interchannel toggles, and detailed process is as follows：
A certain wavelength channel activation of the ONU in OLT is reached the standard grade, in O5 (normal operating condition)；
Passage switching is initiated by OLT, OLT sends PLOAM (Physical Layer OAM, a physical layer operations management
Safeguard) message, the purpose wavelength channel that ONU will be performed handover to is informed, and proceed by switching at the time of point；
After ONU is received, it is determined that can switch over, then a confirmation message is replied to OLT, then waits passage switching
Point at the time of beginning；
When moment point reaches, ONU closes sending function, and switches downlink working wavelength, and wavelength is switched into purpose
Wavelength channel, into O8.1 (downstream wavelength adjustment desynchronizing state)；
ONU reads desynchronizing state repeatedly, after desynchronizing state eliminates, it is believed that ONU is on re-synchronization, into O8.2 (under
The long adjusting parameter learning state of traveling wave)；
In this condition, ONU collects Channel_Profile (channel parameters collection) message of purpose passage, Burst_
Profile (burst parameter collection) message, message content is parsed, mode of operation, the work of purpose passage are judged according to message content
Performance, judge that the ONU works if appropriate under the passage；
If it find that the passage of switching is not purpose passage, then into O8.1 re-synchronizations；
If passage is correct, but is unsuitable for this ONU in the passage normal work, ONU then needs to carry out rolling back action,
Return to former passage；
If ONU, into O9 (upstream wavelength adjustment state), can adjust ONU transmission in the purpose channels operation
Wavelength, the transmission for opening ONU enable, the period authorizations issued according to OLT, report Complete_U (upstream wavelength adjustment is completed)
Message；
When OLT receives Complete_U message, then reply Complete_D to ONU (upstream wavelength adjustment is completed to confirm)
Message, confirm that whole passage handoff procedure has been completed, ONU is transferred on purpose passage from source channels and worked.
Following defect be present in traditional ONU passage handoff procedures：
(1) ONU learns profile (parameter set, including channel parameters collection Channel_Profile, burst in purpose passage
Parameter set Burst_Profile) information takes long, influence performance of handoffs.Such as：When ONU is in O8.2, it is necessary to lead in purpose
Road waits and collects Channel_Profile message, Burst_Profile message, and the downloading speed of these profile message takes
Certainly in OLT sending strategy, in worst case, profile message is issued as during usual registration process, using the cycle
Property issue, and the cycle time may be long, even up to the several seconds, if carrying out the logical of ONU in this case
Road switches, then will expend the several seconds during in O8.2, will largely influence performance of handoffs.
(2) when purpose passage is not suitable for this ONU work, ONU will perform invalid handover operation, cause data flow
Packet loss.Such as：When ONU is in O8.2, in purpose passage study profile message contents, discovery purpose passage is not suitable for this
ONU works, then also needs to switch back to source channels, ONU does not have successful switch to purpose passage.
The content of the invention
The invention aims to overcome the shortcomings of above-mentioned background technology, there is provided a kind of TWDM-PON systems and the system
The immediate processing method of middle ONU passages switching, the study of purpose passage profile message is carried out before switching channel, can be improved
Passage switching efficiency, shorten switching time, reduce packet loss, avoid invalid handoff procedure.
The present invention provides a kind of TWDM-PON systems, and the TWDM-PON systems include optical line terminal OLT and optical-fiber network list
First ONU, the TWDM-PON systems support ONU to be worked in multiple wavelength channels, and OLT specifies ONU enterprising in specific wavelength channel
Row work, it is characterised in that：After the OLT issues passage handover request Tuning_Control message, purpose is sent successively
Channel parameters collection Channel_Profile message, the burst parameter collection Burst_Profile message of passage；Tuning_
It is up that Control message includes EPON mark Target Downstream PON-ID of purpose down going channel, purpose
The EPON mark Target Upstream PON-ID of passage；
Increase the super-frame number value SFC of Tuning_Control message, postpone the starting point of OLT switchings；If OLT exists
Received after SFC moment points and unsuccessfully indicate NACK, then cancel current handoff procedure；
ONU receives the Channel_profile message and Busrt_Profile message of indicative purpose passage in source channels,
Under the purpose in EPON mark PON-ID and Tuning_Control message among reduced parameter collection profile message
The EPON mark Target Downstream PON-ID of row of channels or the EPON mark of purpose data feedback channel
Know Target Upstream PON-ID, judge whether unanimously, if unanimously, then it is assumed that have successfully received purpose passage
Profile information, parsing Channel_profile message, Busrt_Profile message；If it is inconsistent, reported to OLT
NACK, terminate switching；
The up operating rate of binding purpose passage, downlink working speed, the least unit of upstream wavelength regulation, descending forward direction
Error correction FEC unlatching situation, judge that ONU if appropriate in purpose channels operation, if it is not, then replying NACK, terminates this
Secondary switching, continue to work in source channels；If be adapted to, ONU replys confirmation message to OLT, the Channel_ of preservation purpose passage
Profile message, Busrt_Profile message contents, wait to be switched start time point；
Switching start time point to reach, ONU closes up transmission, proceeds by the setting work of optical module service band,
Optical module is switched to purpose service band from current source operation wavelength；
The regulating time of ONU transmission wavelength is shifted to an earlier date, receive wavelength regulation with ONU is carried out simultaneously；ONU enters down going wave
Long adjustment desynchronizing state O8.1, waits and stays in re-synchronization on purpose passage, the PON-ID information real-time updates in PSBd；
After ONU step-out, which alerts, to be eliminated, into downstream wavelength adjusting parameter learning state O8.2, O8.2 do not have into
Row profile learns, and reads the PON-ID information in physical control block downstream PSBd, contrasts in Tuning_Control message
Target Downstream PON-ID, confirm that descending switching is correct；
After confirming that downstream wavelength adjustment is correct, state O9 is adjusted into upstream wavelength, opens up transmission, is sent up
Complete_U message is completed in wavelength adjustment.
On the basis of above-mentioned technical proposal, the 9-12 bytes of the Tuning_Control message are Target
Downstream PON-ID, 13-16 bytes are Target Upstream PON-ID.
On the basis of above-mentioned technical proposal, the 5th byte of the Channel_Profile message indicates for passage
Channel Indicate, indicate that the message belongs to this passage or other passages, 7-10 bytes are EPON mark
Know PON-ID, indicate which passage is the Channel_profile message specifically correspond to.
On the basis of above-mentioned technical proposal, the 34th newly-increased byte of the Busrt_Profile message is Channel
Indicate, indicate that the message belongs to this passage or other passages, newly-increased 35-38 bytes are PON-ID, and instruction should
Which passage is Busrt_profile message specifically correspond to.
On the basis of above-mentioned technical proposal, the OLT carries out purpose passage before sendaisle handover request
The framing work of Channel_Profile message, Busrt_Profile message, by the Channel Indicate of two kinds of message
1 is all configured to, other passages are arrived in instruction, are then Tuning_Control message by the PON-ID field configurations of two kinds of message
Target Downstream PON-ID or Target Upstream PON-ID.
The present invention also provides the immediate processing method that ONU passages switch in a kind of TWDM-PON systems, comprises the following steps：
After S1, OLT issue passage handover request Tuning_Control message, the passage ginseng of purpose passage is sent successively
Manifold Channel_Profile message, burst parameter collection Burst_Profile message；Tuning_Control message includes mesh
Down going channel EPON mark Target Downstream PON-ID, the EPON mark of purpose data feedback channel
Know Target Upstream PON-ID；
S2, the super-frame number value SFC for increasing Tuning_Control message, postpone the starting point of OLT switchings；If OLT
Received after SFC moment points and unsuccessfully indicate NACK, then cancel current handoff procedure；
S3, ONU receive the Channel_profile message of indicative purpose passage in source channels and Busrt_Profile disappears
Cease, in the EPON mark PON-ID marks and Tuning_Control message among reduced parameter collection profile message
Purpose down going channel EPON mark Target Downstream PON-ID or purpose data feedback channel it is passive
Optical-fiber network identifies Target Upstream PON-ID, judges whether unanimously, if unanimously, then it is assumed that have successfully received purpose passage
Profile information, parsing Channel_profile message, Busrt_Profile message；If it is inconsistent, on OLT
NACK is reported, terminates switching；
The up operating rate of binding purpose passage, downlink working speed, the least unit of upstream wavelength regulation, descending forward direction
Error correction FEC unlatching situation, judge that ONU if appropriate in purpose channels operation, if it is not, then replying NACK, terminates this
Secondary switching, continue to work in source channels；If be adapted to, ONU replys confirmation message to OLT, the Channel_ of preservation purpose passage
Profile message, Busrt_Profile message contents, wait to be switched start time point；
S4, switching start time point reach, and ONU closes up transmission, proceeds by the setting work of optical module service band
Make, optical module is switched to purpose service band from current source operation wavelength；
The regulating time of ONU transmission wavelength is shifted to an earlier date, receive wavelength regulation with ONU is carried out simultaneously；ONU enters down going wave
Long adjustment desynchronizing state O8.1, waits and stays in re-synchronization on purpose passage, the PON-ID information real-time updates in PSBd；
After ONU step-out, which alerts, to be eliminated, into downstream wavelength adjusting parameter learning state O8.2, O8.2 do not have into
Row profile learns, and reads the PON-ID information in physical control block downstream PSBd, contrasts in Tuning_Control message
Target Downstream PON-ID, confirm that descending switching is correct；
After confirming that downstream wavelength adjustment is correct, state O9 is adjusted into upstream wavelength, opens up transmission, is sent up
Complete_U message is completed in wavelength adjustment.
On the basis of above-mentioned technical proposal, the 9-12 bytes of the Tuning_Control message are Target
Downstream PON-ID, 13-16 bytes are Target Upstream PON-ID.
On the basis of above-mentioned technical proposal, the 5th byte of the Channel_Profile message indicates for passage
Channel Indicate, indicate that the message belongs to this passage or other passages, 7-10 bytes are EPON mark
Know PON-ID, indicate which passage is the Channel_profile message specifically correspond to.
On the basis of above-mentioned technical proposal, the 34th newly-increased byte of the Busrt_Profile message is Channel
Indicate, indicate that the message belongs to this passage or other passages, newly-increased 35-38 bytes are PON-ID, and instruction should
Which passage is Busrt_profile message specifically correspond to.
On the basis of above-mentioned technical proposal, the OLT carries out purpose passage before sendaisle handover request
The framing work of Channel_Profile message, Busrt_Profile message, by the Channel Indicate of two kinds of message
1 is all configured to, other passages are arrived in instruction, are then Tuning_Control message by the PON-ID field configurations of two kinds of message
Target Downstream PON-ID or Target Upstream PON-ID.
Compared with the switching of the ONU passages of routine, advantages of the present invention is as follows：
(1) ONU of the invention carries out the profile study of purpose passage before switching channel, if it find that purpose is led to
Road is not suitable for ONU work, can cancel current handoff procedure in advance, avoid invalid switching from causing the packet loss feelings of data flow
Condition；When ONU is in O8.1 or O8.2, data flow is to interrupt, if it is possible to it is known that purpose passage is not suitable for work in advance,
The service disconnection in this period so can be avoided without switching.The present invention carries out purpose passage before switching channel
Profile message learns, it is possible to increase passage switching efficiency, shortens switching time, reduces packet loss, and avoid invalid cut
Change process.
(2) ONU of the invention carries out purpose passage profile message before switching channel and learnt, O8.2 do not have into
Row profile learns, and the correctness only adjusted with wavelength is confirmed, can effectively shorten switching time, additionally it is possible to avoid profile
Study time-out causes state to be adjusted to O1 (original state), increases the stability of handoff procedure.
(3) ONU passage switching times of the invention depend primarily on the wavelength adjustment time of optical module, are easy to ONU passages
The budget work of packet drop in handoff procedure.
Brief description of the drawings
Fig. 1 is the schematic diagram of Busrt_profile message contents.
Fig. 2 is PSBd composition schematic diagram.
Fig. 3 is the passage switching state schematic diagram after being improved in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
The embodiment of the present invention provides a kind of TWDM-PON systems, and the TWDM-PON systems include optical line terminal OLT and light
NE ONU, the TWDM-PON systems support ONU to be worked in multiple wavelength channels, and OLT specifies ONU to lead in specific wavelength
It is operated on road.
The embodiment of the present invention provides the immediate processing method that ONU passages switch in a kind of TWDM-PON systems, including following
Step：
After S1, OLT issue Tuning_Control (passage handover request) message, purpose passage is sent successively
Channel_Profile message, Burst_Profile message.
The Channel_Profile message of other passages is sent by this passage, it is existing in ITU-T G.989.3 draft
Definition.The Burst_Profile message of other passages is sent then without definition, it is necessary in Burst_Profile by this passage
Increase channel indicator section in message content newly, it is shown in Figure 1.
Tuning_Control message includes the Target Downstream PON-ID (passive optical networks of purpose down going channel
Network identifies), the Target Upstream PON-ID EPON of purpose data feedback channel (mark).Tuning_Control disappears
The 9-12 bytes of breath are Target Downstream PON-ID, and 13-16 bytes are Target Upstream PON-ID.
5th byte of Channel_Profile message is Channel Indicate (passage instruction), indicates the message category
Then this passage or other passages, 7-10 bytes are PON-ID (EPON mark), indicate the Channel_
Which passage is profile message specifically correspond to.
Shown in Figure 1, the 34th newly-increased byte of Busrt_Profile message is Channel Indicate, and instruction should
Message belongs to this passage or other passages, and newly-increased 35-38 bytes are PON-ID, indicates that the Busrt_profile disappears
Which passage breath specifically corresponds to.
OLT carries out Channel_Profile message, the Busrt_ of purpose passage before sendaisle handover request
The framing work of Profile message, the Channel Indicate of two kinds of message are configured to 1, other passages are arrived in instruction, so
Afterwards by the PON-ID field configurations of two kinds of message for Tuning_Control message Target Downstream PON-ID or
Person Target Upstream PON-ID；If the purpose data feedback channel of switching, down going channel do not belong to same passage, then
The profile information of data feedback channel, down going channel belonged to passage respectively is required for sending.
After Tuning_Control message is sent, Channel_profile's OLT for issuing purpose passage successively disappears
Breath, Busrt_Profile message.Because Channel_profile message is broadcast, Busrt_Profile message may be
Unicast, it is also possible to, can if other ONU receive profile (parameter set) message that these specify other passages for broadcast
Stored away in advance with selection, can also abandon and not process.
S2, suitably SFC (SuperFrame Counter, the super-frame number value) of increase Tuning_Control message are matched somebody with somebody
Put value.Due to OLT after Tuning_Control message is sent, it is necessary to send 1 frame Channel_Profile message and 4 frames
Burst_Profile message, if the purpose data feedback channel of switching, down going channel belong to different passages, then need transmission 2
Frame Channel_Profile message and 8 frame Burst_Profile message.Need to receive a plurality of profile message in view of ONU,
And do corresponding processing to judge, the regular hour will be expended, then should increase SFC, the starting point of OLT switchings is postponed, allow
ONU has enough processing times.OLT should not immediately begin to switch over work in SFC moment points, but when postponing one section backward
Between switch over work again.
Because ONU is possible to not complete profile study and work in SFC moment points, and NACK is replied at the SFC moment
(unsuccessfully indicating), if OLT receives NACK after SFC moment points, can cancel current handoff procedure.
S3, ONU receive the Channel_profile message of indicative purpose passage in source channels and Busrt_Profile disappears
Breath, contrast the PON-ID marks among profile message and the Target Downstream in Tuning_Control message
PON-ID or Target Upstream PON-ID, judge whether unanimously, if unanimously, PON-ID can be matched, then recognized
To have successfully received the profile information of purpose passage, parsing Channel_profile message, Busrt_Profile message；Such as
Fruit is inconsistent, then directly reports NACK to OLT, terminates switching；
The up operating rate of binding purpose passage, downlink working speed, the least unit of upstream wavelength regulation, descending FEC
The unlatching situation of (Forward Error Correction, forward error correction), ONU is judged if appropriate in purpose channels operation,
If it is not, then directly replying NACK message, terminate this switching, continue to work in source channels, so as to avoid invalid cut
Process is changed, avoids Business Stream from interrupting；If be adapted to, ONU can be in purpose channels operation, and ONU replys confirmation message to OLT, and
And the Channel_profile message of purpose passage, Busrt_Profile message contents are preserved, wait to be switched start time point.
S4, switching start time point reach, and ONU closes up transmission, proceeds by the setting work of optical module service band
Make, optical module is switched to purpose service band from current source operation wavelength, being capable of steady operation needs one in purpose operation wavelength
Fixed adjustment time, because ONU does not have in O8.2 to carry out profile study, the correctness only adjusted with wavelength is confirmed, at ONU
It is very short in O8.2 time；In order to improve efficiency, the regulating time of ONU transmission wavelength can be shifted to an earlier date, with ONU received waves
Long regulation is carried out simultaneously；ONU enters O8.1, waits and stays in re-synchronization on purpose passage, due to PSBd (Physical Control
Block downstream physical control block downstreams) in PON-ID information real-time updates, after ONU synchronizations can obtain
Arrive, it is not necessary to wait.
Enter O8.2 after ONU step-out is alerted and eliminated, do not have to carry out profile study in O8.2, read in PSBd
PON-ID information, corresponding frame structure is shown in Figure 2.Contrast the Target in Tuning_Control message
Downstream PON-ID, confirm that descending switching is correct.
After confirming that downstream wavelength adjustment is correct, into O9, up transmission is opened, sends Complete_U message.
It is described in detail below by a specific case.
It is the first step, shown in Figure 3, a TWDM-PON system is built, takes the OLT of 4 passages of support, channel number is
0-3.Take the ONU of 4 passages of support.ONU is allowed to activate on lane 0, into O5 states.
Second step, OLT carry out framing Tuning_Control, Channel_profile, Busrt_ in passage 0
Profile, Tuning_Control message indicate that ONU is switched to passage 1 from passage 0, Channel_profile message with
Profile information of the Busrt_Profile message packages containing passage 1, is then handed down to ONU successively.
3rd step, ONU are after Tuning_Control message is received, it is thus understood that need to be switched to passage from passage 0
1, and determine to start to switch at the time of point, switching instant timer is configured, waits the Channel_ of instruction passage 1 to be received
Profile message, Busrt_Profile message.
4th step, profile is collected, carry out Context resolution, determine that these profile correspond to passage 1, information is complete
Into afterwards, discovery passage 1 is not suitable for ONU work, then closes switching timer, replys NACK to OLT；If passage 1 is adapted to
Worked in ONU, then preserve profile information, reply ACK message to OLT, waiting for the start switching.
5th step, switching instant timer have timed, out, if profile study and works have not been completed, reply
NACK cancels current switching；If profile study is normal, the operation wavelength of optical module is configured to the operating wave of passage 1
Long, ONU enters O8.1 by O5 normal operating conditions, opens TO4 timers.
6th step, ONU read down-going synchronous information, if before TO4 timer expiries, step-out alarm eliminates, under ONU
Row is synchronous to enter O8.2, does not have to carry out profile study in O8.2, reads the PON-ID letters of PSBd down physical layer synchronous heads
Breath, it is determined that current down going channel is strictly passage 1；If it find that not being, ONU reconfigures the descending of optical module into O8.1
Wavelength configuration, carry out re-synchronization；If strictly passage 1, TO4 timers are closed, ONU enters O9, and ONU opens TO5 and determined
When device；If TO4 timer expiries, ONU is synchronized to passage 1 not successfully always, then ONU reactivates into O1.
The authorization window that 7th step, ONU are issued in the O9 wait OLT cycles, replys Complete_U message, if determined in TO5
When device time-out before receive Complete_D message.Then whole switch operating is completed, and ONU is switched to passage 1 and worked, state transfer
To O5；If TO5 timer expiries do not receive Complete_D message yet, ONU reactivates into O1.
8th step, ONU switch back to passage 0 from passage 1 again, or from passage 1 be switched to passage 2 when, operate same step
Two to step 7.
Those skilled in the art can carry out various modifications and variations to the embodiment of the present invention, if these modifications and change
Type is within the scope of the claims in the present invention and its equivalent technologies, then these modifications and variations are also in protection scope of the present invention
Within.
The prior art that the content not being described in detail in specification is known to the skilled person.
Claims (10)
1. a kind of TWDM-PON systems, the TWDM-PON systems include optical line terminal OLT and optical network unit ONU, the TWDM-
PON system supports ONU to be worked in multiple wavelength channels, and OLT specifies ONU to be operated on specific wavelength channel, its feature
It is：After the OLT issues passage handover request Tuning_Control message, the channel parameters of purpose passage are sent successively
Collect Channel_Profile message, burst parameter collection Burst_Profile message；Tuning_Control message includes purpose
EPON mark Target Downstream PON-ID of down going channel, the EPON mark of purpose data feedback channel
Target Upstream PON-ID；
Increase the super-frame number value SFC of Tuning_Control message, postpone the starting point of OLT switchings；If OLT is in SFC
Received after punctum and unsuccessfully indicate NACK, then cancel current handoff procedure；
ONU receives the Channel_profile message and Busrt_Profile message of indicative purpose passage, contrast in source channels
EPON mark PON-ID among parameter set profile message and the purpose in Tuning_Control message are descending logical
The EPON mark Target Downstream PON-ID in road or the EPON mark of purpose data feedback channel
Target Upstream PON-ID, judge whether unanimously, if unanimously, then it is assumed that have successfully received the profile of purpose passage
Information, parsing Channel_profile message, Busrt_Profile message；If it is inconsistent, NACK is reported to OLT, eventually
Only switch；
The up operating rate of binding purpose passage, downlink working speed, the least unit of upstream wavelength regulation, downlink forward error correction
FEC unlatching situation, judge that ONU if appropriate in purpose channels operation, if it is not, then replying NACK, terminates this and cut
Change, continue to work in source channels；If be adapted to, ONU replys confirmation message to OLT, the Channel_ of preservation purpose passage
Profile message, Busrt_Profile message contents, wait to be switched start time point；
Switch start time point to reach, ONU closes up transmission, proceeds by the setting work of optical module service band, optical mode
Block is switched to purpose service band from current source operation wavelength；
The regulating time of ONU transmission wavelength is shifted to an earlier date, receive wavelength regulation with ONU is carried out simultaneously；ONU adjusts into downstream wavelength
Whole desynchronizing state O8.1, wait and stay in re-synchronization on purpose passage, the PON-ID information in physical control block downstream PSBd is real-time
Renewal；
After ONU step-out, which alerts, to be eliminated, into downstream wavelength adjusting parameter learning state O8.2, do not have to carry out in O8.2
Profile learns, and reads the PON-ID information in physical control block downstream PSBd, contrasts in Tuning_Control message
Target Downstream PON-ID, confirm that descending switching is correct；
After confirming that downstream wavelength adjustment is correct, state O9 is adjusted into upstream wavelength, opens up transmission, sends upstream wavelength
Complete_U message is completed in adjustment.
2. TWDM-PON systems as claimed in claim 1, it is characterised in that：The 9-12 of the Tuning_Control message
Byte is Target Downstream PON-ID, and 13-16 bytes are Target Upstream PON-ID.
3. TWDM-PON systems as claimed in claim 1, it is characterised in that：5th word of the Channel_Profile message
Save and indicate Channel Indicate for passage, indicate that the message belongs to this passage or other passages, 7-10 bytes are
EPON identifies PON-ID, indicates which passage is the Channel_profile message specifically correspond to.
4. TWDM-PON systems as claimed in claim 3, it is characterised in that：The Busrt_Profile message it is newly-increased the
34 bytes are Channel Indicate, indicate that the message belongs to this passage or other passages, newly-increased 35-38 bytes
For PON-ID, indicate which passage is the Busrt_profile message specifically correspond to.
5. TWDM-PON systems as claimed in claim 4, it is characterised in that：The OLT enters before sendaisle handover request
The framing work of the Channel_Profile message of row purpose passage, Busrt_Profile message, by two kinds of message
Channel Indicate are configured to 1, and other passages are arrived in instruction, are then by the PON-ID field configurations of two kinds of message
Target Downstream PON-ID or the Target UpstreamPON-ID of Tuning_Control message.
6. the immediate processing method that ONU passages switch in a kind of TWDM-PON systems, it is characterised in that comprise the following steps：
After S1, OLT issue passage handover request Tuning_Control message, the channel parameters collection of purpose passage is sent successively
Channel_Profile message, burst parameter collection Burst_Profile message；Tuning_Control message is included under purpose
EPON mark Target Downstream PON-ID of row of channels, the EPON mark of purpose data feedback channel
Target Upstream PON-ID；
S2, the super-frame number value SFC for increasing Tuning_Control message, postpone the starting point of OLT switchings；If OLT is in SFC
Received after moment point and unsuccessfully indicate NACK, then cancel current handoff procedure；
S3, ONU receive the Channel_profile message and Busrt_Profile message of indicative purpose passage in source channels, right
It is more descending than the purpose in the EPON mark PON-ID and Tuning_Control message among parameter set profile message
The EPON mark Target Downstream PON-ID of passage or the EPON mark of purpose data feedback channel
Target Upstream PON-ID, judge whether unanimously, if unanimously, then it is assumed that have successfully received the profile of purpose passage
Information, parsing Channel_profile message, Busrt_Profile message；If it is inconsistent, NACK is reported to OLT, eventually
Only switch；
The up operating rate of binding purpose passage, downlink working speed, the least unit of upstream wavelength regulation, downlink forward error correction
FEC unlatching situation, judge that ONU if appropriate in purpose channels operation, if it is not, then replying NACK, terminates this and cut
Change, continue to work in source channels；If be adapted to, ONU replys confirmation message to OLT, the Channel_ of preservation purpose passage
Profile message, Busrt_Profile message contents, wait to be switched start time point；
S4, switching start time point reach, and ONU closes up transmission, proceeds by the setting work of optical module service band, light
Module is switched to purpose service band from current source operation wavelength；
The regulating time of ONU transmission wavelength is shifted to an earlier date, receive wavelength regulation with ONU is carried out simultaneously；ONU adjusts into downstream wavelength
Whole desynchronizing state O8.1, wait and stay in re-synchronization on purpose passage, the PON-ID information in physical control block downstream PSBd is real-time
Renewal；
After ONU step-out, which alerts, to be eliminated, into downstream wavelength adjusting parameter learning state O8.2, do not have to carry out in O8.2
Profile learns, and reads the PON-ID information in physical control block downstream PSBd, contrasts in Tuning_Control message
Target Downstream PON-ID, confirm that descending switching is correct；
After confirming that downstream wavelength adjustment is correct, state O9 is adjusted into upstream wavelength, opens up transmission, sends upstream wavelength
Complete_U message is completed in adjustment.
7. the immediate processing method that ONU passages switch in TWDM-PON systems as claimed in claim 6, it is characterised in that：Institute
The 9-12 bytes for stating Tuning_Control message are Target Downstream PON-ID, and 13-16 bytes are
Target Upstream PON-ID。
8. the immediate processing method that ONU passages switch in TWDM-PON systems as claimed in claim 6, it is characterised in that：Institute
The 5th byte for stating Channel_Profile message indicates Channel Indicate for passage, and it is that this is logical to indicate that the message belongs to
Road or other passages, 7-10 bytes are that EPON identifies PON-ID, indicate that the Channel_profile message is specific
Which corresponding passage.
9. the immediate processing method that ONU passages switch in TWDM-PON systems as claimed in claim 8, it is characterised in that：Institute
It is Channel Indicate to state the 34th newly-increased byte of Busrt_Profile message, indicate the message belong to be this passage also
It is other passages, newly-increased 35-38 bytes are PON-ID, and it is logical to indicate which the Busrt_profile message specifically corresponds to
Road.
10. the immediate processing method that ONU passages switch in TWDM-PON systems as claimed in claim 9, it is characterised in that：Institute
OLT is stated before sendaisle handover request, carries out Channel_Profile message, the Busrt_Profile message of purpose passage
Framing work, the Channel Indicate of two kinds of message are configured to 1, other passages are arrived in instruction, and then two kinds disappear
The PON-ID field configurations of breath are Target the Downstream PON-ID or Target of Tuning_Control message
Upstream PON-ID。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610038459.XA CN105703873B (en) | 2016-01-20 | 2016-01-20 | The immediate processing method that ONU passages switch in TWDM PON systems and the system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610038459.XA CN105703873B (en) | 2016-01-20 | 2016-01-20 | The immediate processing method that ONU passages switch in TWDM PON systems and the system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105703873A CN105703873A (en) | 2016-06-22 |
| CN105703873B true CN105703873B (en) | 2018-02-16 |
Family
ID=56227706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610038459.XA Active CN105703873B (en) | 2016-01-20 | 2016-01-20 | The immediate processing method that ONU passages switch in TWDM PON systems and the system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105703873B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108633325A (en) * | 2017-01-24 | 2018-10-09 | 华为技术有限公司 | A kind of communication means of passive optical network PON, device and system |
| CN107124672B (en) * | 2017-05-05 | 2019-08-27 | 烽火通信科技股份有限公司 | The method that ONU efficiently manages profile message in TWDM-PON system |
| JP6988936B2 (en) * | 2020-02-19 | 2022-01-05 | 沖電気工業株式会社 | Control device and control program |
| CN116209071A (en) * | 2021-11-30 | 2023-06-02 | 华为技术有限公司 | Communication method, device and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837077A (en) * | 2014-02-12 | 2015-08-12 | 中兴通讯股份有限公司 | Optical line terminal/optical network unit wavelength adjustment method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056033B (en) * | 2009-11-04 | 2014-04-09 | 中兴通讯股份有限公司 | Method for managing uplink burst overhead parameter and passive optical network system |
| CN109660311B (en) * | 2014-01-23 | 2021-01-29 | 华为技术有限公司 | Optical line terminal communication method and equipment with data structure |
-
2016
- 2016-01-20 CN CN201610038459.XA patent/CN105703873B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837077A (en) * | 2014-02-12 | 2015-08-12 | 中兴通讯股份有限公司 | Optical line terminal/optical network unit wavelength adjustment method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105703873A (en) | 2016-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105703873B (en) | The immediate processing method that ONU passages switch in TWDM PON systems and the system | |
| KR101347570B1 (en) | System and method for energy-efficient operation of optical network units based on scheduled payload reception | |
| CN103583009B (en) | The timing of configurating downlink link and the method and apparatus of transmission accidental access response in the mobile communication system using carrier aggregation | |
| CN104837077B (en) | Optical line terminal/optical network unit wavelength tuning method and device | |
| CN101552772B (en) | Method, devices and system for optical network data processing | |
| EP2451092B1 (en) | Method and system for quickly updating ranging results of optical network unit by optical line terminal | |
| JP5563666B2 (en) | Method for managing uplink burst overhead parameter and passive optical network system | |
| WO2017101438A1 (en) | Bandwidth scheduling method, onu registration method, device and olt | |
| EP1441466B1 (en) | Method of controlling loop-back process in Ethernet passive optical network | |
| AU2016430261A1 (en) | Passive optical network system, optical line terminal and optical network unit | |
| CN103634086B (en) | Adjust method, system, local side apparatus and the CPE of the distribution of uplink and downlink time | |
| CN101111055A (en) | Method and terminal for controlling switch and execution | |
| WO2010000153A1 (en) | A passive optical network system, optical line terminal, optical network unit and a method for realizing load equalization | |
| Hisano et al. | Gate-shrunk time aware shaper: Low-latency converged network for 5G fronthaul and M2M services | |
| EP2154832B1 (en) | Optical access network | |
| CN101467395A (en) | Method for transmitting signals in systems with point-to-multipoint connections | |
| JP2007142529A (en) | Pon system and testing method thereof | |
| JP2007049376A (en) | Optical subscriber line terminal station, optical subscriber line terminating device, and down band control method | |
| CN107547952A (en) | ONU adapts to that 10G/10G is symmetrical and the asymmetrical method and system of 10G/1G | |
| WO2012152050A1 (en) | Optical network channel detection method and device | |
| CN108631861B (en) | GPON system for realizing rapid protection switching and protection switching method | |
| CN102421125B (en) | Mobile terminal, method and device for judging and regulating uplink synchronization abnormity | |
| CN107682078A (en) | One kind is based on the co-operating ONU failure management methods of OLT and ONU | |
| TW201328216A (en) | Network system | |
| EP2521316B1 (en) | Method and apparatus for measuring switch time of ethernet ring network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |