CN102316015B - The Notification Method of a kind of optical network unit state change and system - Google Patents
The Notification Method of a kind of optical network unit state change and system Download PDFInfo
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- CN102316015B CN102316015B CN201010225269.1A CN201010225269A CN102316015B CN 102316015 B CN102316015 B CN 102316015B CN 201010225269 A CN201010225269 A CN 201010225269A CN 102316015 B CN102316015 B CN 102316015B
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Abstract
The Notification Method and the system that the invention discloses the change of a kind of optical network unit state include: optical line terminal (OLT) distributes a shared upstream bandwidth to optical network unit (ONU) termly；By shared upstream bandwidth, the ONU being in off working state informs that OLT self proceeds to wake states；The ONU revived from sleep state i.e. can be made to communicate with OLT in time by the present invention.
Description
Technical field
The present invention relates to EPON, particularly relate to a kind of optical network unit state change Notification Method and
Device.
Background technology
EPON (PON, Passive Optical Network) is a kind of employing point-to-multipoint topology knot
The passive light access technology of structure, wherein, gigabit passive optical network (GPON, Gigabit-Capable Passive
Optical Network) technology is an important technology branch in PON family, this patent with GPON is
Example discusses the process of emergency message in PON.
GPON system is by the optical line terminal (OLT, Optical Line Terminal) of office side, user side
Optical network unit (ONU, Optical Network Unit) and Optical Distribution Network (ODN, Opticai
Distribution Network) composition, generally use point-to-multipoint network structure.
In GPON system, the data transmission of down direction (by OLT to ONU) uses broadcast mode,
Each ONU receives all of frame respectively, further according to ONU-ID (ONU mark), GEM (GPON
Encapsulation Method, GPON method for packing)-Port ID (port-mark) and Allocation-ID
(allocation identification) obtains one's own frame.But, for up direction (from ONU to OLT)
Data transmission, due to transmission medium to be shared, it is therefore desirable to processed by suitable control and just can make each
It is sent to OLT the upstream data information completely of ONU.Uplink frame employing time division multiplex access (TDMA,
Time Division Multiple Access) technology, this technology uses and up channel is divided into multiple time slot,
ONU sends the report sending upstream data to OLT, and OLT according to the report of ONU or is supervised by flow
Survey as ONU distribution upstream bandwidth and control it in certain time slot transmission data.In existing GPON technology,
OLT be ONU distribution upstream bandwidth be with Bandwidth map bandwidth distribution structure (BWmap allocation
Structures) mode physical control block downstream (PCBd, the Physical Control Block by downlink frame
Downstream) transmission is carried.
In order to realize the OLT part management function to ONU, the G.984.3 standard of ITU-T defines physics
(PLOAM, Physical layer Operations, Administration and are safeguarded in layer operation management
Maintenance) passage, GPON utilizes PLOAM channel transfer PLOAM message, it is achieved to transmission
The management of convergence-level, activates including ONU, ONU management controls the foundation of passage, encryption configuration and close
Key management etc..PLOAM message is at the uplink frame frame of OLT (ONU be sent to) and downlink frame (OLT
It is sent to the frame of ONU) middle transmission, each downlink frame comprises a PLOAM message, OLT passes through
In downlink frame, the bit 10 in the Flags territory of Bandwidth map bandwidth distribution structure notifies that ONU is at this upstream bandwidth
In whether can send PLOAM message, when the value of described bit 10 is 1, ONU divides in described bandwidth
Sending PLOAM message in the upstream bandwidth that pairing is answered, when the value of described bit 10 is 0, ONU is in institute
PLOAM message can not be sent in stating the upstream bandwidth that bandwidth distribution is corresponding.
Consider the energy saving requirement of PON system, prior art proposes when ONU does not has upstream data to need to send out
Enter into sleep state when sending, be in dormant ONU and close part or repertoire, Ke Yixuan
Select and be not responding to OLT and distribute to the upstream bandwidth of oneself, i.e. in OLT distributes to the upstream bandwidth of oneself not
Send upstream data, to reach energy-conservation purpose.OLT regularly distributes for being in dormant ONU
Upstream bandwidth, to realize can sending timely when dormant ONU wakes up upstream data.
This technology there is problems of, OLT periodically give all be in dormant ONU distribution up
Bandwidth, if OLT distributes described upstream bandwidth to dormant ONU with the shorter cycle, works as ONU
When being chronically at sleep state and do not have upstream data to need to send, above-mentioned upstream bandwidth distribution mechanism wastes
Upstream bandwidth, if it addition, being in dormant ONU to be not responding to the bandwidth distribution of OLT, possible quilt
OLT is mistakenly considered operation irregularity；If OLT distributes on described to dormant ONU with the longer cycle
Row bandwidth, when be in dormant ONU wake up need send upstream data time, above-mentioned upstream bandwidth divides
Join mechanism it cannot be guaranteed that described ONU obtains upstream bandwidth timely to send upstream data.
Accordingly, it is desirable to provide the informing mechanism that a kind of ONU state changes, so that OLT is according to ONU's
State carries out the distribution of upstream bandwidth, reaches to save upstream bandwidth, can make again to revive from sleep state
ONU sends the purpose of upstream data in time to OLT.But, there is presently no one and can reach above-mentioned mesh
ONU state change notification scheme.
Summary of the invention
In view of this, present invention is primarily targeted at the notice side providing a kind of optical network unit state to change
Method and system, so that OLT carries out the distribution of upstream bandwidth according to the state of ONU, i.e. can save up
Bandwidth, the ONU revived from sleep state can be made to communicate with OLT in time again.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The invention provides the Notification Method that a kind of optical network unit state changes, the method includes:
Optical line terminal (OLT) distributes one or more to optical network unit (ONU) and shares up band
Wide；
By described shared upstream bandwidth, the ONU being in off working state informs that described OLT self is by sleeping
State proceeds to wake states.
Described off working state includes: sleep state and wake states.
Before described OLT distributes one or more shared upstream bandwidth to ONU, the method also includes:
When ONU does not has upstream data send and proceed to sleep state, inform that OLT self proceeds to shape of sleeping
State；
Described OLT storage proceeds to the information of dormant ONU.
Described ONU informs that OLT self proceeds to sleep state, particularly as follows: described ONU is to described OLT
Send physical layer operations management and safeguard (PLOAM) message, ONU management control interface information or Ji
Bit passive optical network method for packing (GEM) frame, notice OLT self proceeds to sleep state.
The information of the ONU of described OLT storage includes the mark proceeding to dormant described ONU
(ONU_ID)；
Correspondingly, described OLT obtains described ONU_ID from described PLOAM message；
Or, described OLT is from comprising ONU management control interface information or the uplink frame of GEM frame
ONU-ID territory obtain described ONU-ID；
Or, OLT is according to the port id (port-ID) in ONU management control interface information or GEM frame
Described ONU-ID corresponding to described Port-ID is obtained from this locality.
The information of the ONU of described OLT storage farther includes described ONU and proceeds to the dormant time；
Accordingly, the method farther includes: when the described OLT described ONU of acquisition proceeds to dormant
Between, particularly as follows: described OLT from described PLOAM message, ONU management control interface information or
GEM frame obtains described ONU and proceeds to the dormant time；Or, described OLT will receive described
The time of PLOAM message, ONU management control interface information or GEM frame is defined as described ONU
Proceed to the dormant time.
Described OLT distributes one or more shared upstream bandwidths to ONU, particularly as follows:
Described OLT is termly or according to the order of network management system, by the band of Bandwidth map in downlink frame
One or more shared upstream bandwidths are distributed to ONU by wide distribution structure.
After the described ONU being in off working state receives the one or more shared upstream bandwidth, should
Method farther includes:
The described ONU being in off working state determines described according to the Alloc-ID of described bandwidth distribution structure
Share upstream bandwidth and inform that described OLT self is proceeded to wake states by sleep state for described ONU.
The described ONU being in off working state informs described OLT by one or more shared upstream bandwidths
Self is proceeded to wake states by sleep state, particularly as follows:
The described ONU being in off working state sends PLOAM message to described OLT, ONU manages control
Interface message processed or GEM frame, notice OLT self is proceeded to wake states by sleep state.
The described ONU being in off working state sends PLOAM message to described OLT, ONU manages control
Interface message processed or GEM frame, particularly as follows:
It is in the ONU of off working state when proceeding to wake states and have upstream data to be sent, selects one
Individual shared upstream bandwidth, waits one according to the value of the time started (StartTime) of described bandwidth distribution structure
After individual random delay, to described OLT send described PLOAM message, ONU management control interface information,
Or GEM frame.
The method farther includes: described OLT is proceeded to the ONU of wake states by sleep state divide to described
Join upstream bandwidth.
Described OLT distributes upstream bandwidth to the ONU proceeding to wake states, particularly as follows:
OLT obtains according to PLOAM message, ONU management control interface information or GEM frame and proceeds to
The ONU_ID of the described ONU of wake states, and proceed to sleep according to the described ONU_ID described ONU of acquisition
The time of dormancy state；Described ONU is proceeded to time of wake states deduct described in when proceeding to dormant
Between, obtain the sleep duration of described ONU；When described sleep duration exceedes default threshold value, to described
ONU finds range, and obtains an equilibrium time delay and is sent to described ONU, dividing for described ONU simultaneously
Join upstream bandwidth；When described sleep duration is not above the threshold value preset, it is directly in described ONU distribution
Row bandwidth.
Described OLT distributes upstream bandwidth to the ONU proceeding to wake states, particularly as follows:
OLT obtains according to PLOAM message, ONU management control interface information or GEM frame and proceeds to
The ONU_ID of the described ONU of wake states, directly finds range to described ONU, obtains an equilibrium
Time delay is also sent to ONU, is that described ONU distributes upstream bandwidth simultaneously.
Described OLT distributes upstream bandwidth to the ONU proceeding to wake states, particularly as follows:
OLT obtains according to PLOAM message, ONU management control interface information or GEM frame and proceeds to
The ONU_ID of the described ONU of wake states, is directly that described ONU distributes upstream bandwidth.
The method farther includes: described OLT obtains described ONU and proceeds to the time of wake states, specifically
For:
Described OLT is from described PLOAM message, ONU management control interface information or GEM frame
Obtain described ONU and proceed to the time of wake states；Or, described OLT will receive described PLOAM
The time of message, ONU management control interface information or GEM frame is defined as described ONU and proceeds to Soviet Union
The time of the state of waking up.
The method farther includes:
Proceed to after the ONU of wake states receives described upstream bandwidth, proceed to duty, and described
Upstream data is sent to OLT on upstream bandwidth；Or, according to OLT send described equilibrium time delay in institute
State and send upstream data to OLT on upstream bandwidth.
Present invention also offers the notice system that a kind of optical network unit state changes, this system includes: OLT
And ONU, wherein:
Described OLT, for distributing one or more shared upstream bandwidths to all ONU；
Described ONU, when being used for being in off working state, informs described OLT by described shared upstream bandwidth
Self is proceeded to wake states by sleep state.
Described off working state includes: sleep state and wake states.
Described ONU is further used for, OLT to ONU distribute one or more shared upstream bandwidths it
Before, determine and self do not have upstream data to send and when proceeding to sleep state, inform that described OLT proceeds to self
Sleep state.
Described OLT is further used for, and distributes upstream bandwidth to the ONU being proceeded to wake states by sleep state；
Accordingly, described ONU is further used for, and after receiving described upstream bandwidth, proceeds to work shape
State, and send upstream data to OLT on described upstream bandwidth.
The Notification Method that optical network unit state of the present invention changes, all ONU for OLT administration are regular
One shared upstream bandwidth of ground distribution, notice is in the ONU of off working state (sleep state and wake states)
Actively informing that OLT self has proceeded to wake states and had upstream data to send, so, OLT is the most permissible
Obtain the change of OLT state in time, and be that the ONU distribution proceeding to wake states is for sending out termly
Send the upstream bandwidth of upstream data, so can save upstream bandwidth, in turn ensure that and make to revive from sleep state
ONU communicate with OLT in time.
It addition, OLT is only for proceeding to wake states and having the ONU that upstream data is to be sent to distribute for sending out
Send the upstream bandwidth of upstream data, it is to avoid ONU does not has the upstream data to send, and it is up to be that it is assigned with
The waste of the upstream bandwidth that bandwidth is caused.
Accompanying drawing explanation
Fig. 1 is the distribution method schematic flow sheet of upstream bandwidth of the present invention；
Fig. 2 is the distribution system configuration schematic diagram of upstream bandwidth of the present invention.
Detailed description of the invention
The technical solution of the present invention is further elaborated with specific embodiment below in conjunction with the accompanying drawings.
The method of the present invention is applicable to multiple PON, such as GPON, XGPON1, XGPON2, is also suitable
In other TDMA PON, such as EPON, 10GEPON etc..
The distribution method of upstream bandwidth of the present invention, as it is shown in figure 1, comprise the steps:
Step 101, ONU informs that OLT self proceeds to sleep state.
When ONU does not has upstream data transmission and sleep state to be proceeded to, inform OLT, and at sleep shape
The upstream bandwidth for sending uplink business data of OLT distribution is no longer responded during state.The method of the present invention relates to
And to two kinds of upstream bandwidths: one is to share upstream bandwidth, reports changing of oneself state for ONU to OLT
Become；One is the upstream bandwidth for ONU reporting uplink business datum.Concrete, by follow-up step
In illustrate.
It is preferred that ONU can send a PLOAM message to OLT, this message is carried this ONU
Mark (ONU_ID), this type of message is 10000000, show this ONU notice OLT self enter
Sleep state, and the upstream bandwidth of OLT distribution is no longer responded when sleep state.Certainly, type of message
Can also there is other set-up mode, as long as according to this type of message, OLT can determine that ONU proceeds to sleep
State.
Above-mentioned PLOAM message can also be carried ONU and enter the dormant time；Or, do not take
When band enters the dormant time, the time receiving PLOAM message can be defined as ONU by OLT
Enter the dormant time.
ONU can also send ONU management control interface information or GEM frame notice OLT to OLT
Self enter sleep state, when using both message, by comprise ONU management control interface information,
Or the ONU-ID of this ONU is carried in the ONU-ID territory of the uplink frame of GEM frame；Or, OLT is permissible
Obtain from this locality according to the port id (port-ID) in ONU management control interface information or GEM frame
Take the ONU-ID of this corresponding for this Port-ID ONU.
ONU management control interface information or GEM frame can also carry ONU and enter sleep state
Time；Or, when not being carried along into the dormant time, OLT can will receive ONU management
The time controlling interface message or GEM frame is defined as the ONU entrance dormant time.
The storage of step 102:OLT proceeds to the information of dormant ONU.
After OLT learns that ONU proceeds to sleep state, obtain and store the ONU-ID of this ONU；Further
Ground, it is also possible to storage ONU enters the dormant time.
Before this ONU revives, OLT is no longer used for sending the upstream bandwidth of upstream data to its distribution.
Step 103:OLT distributes one or more shared upstream bandwidths to ONU.
One OLT can administer multiple ONU, this OLT to its all ONU administered distribute one or
The multiple shared upstream bandwidth of person.And the ONU being only in off working state responds this shared upstream bandwidth.
Sleep state and wake states are referred to as off working state by the present invention；Relative, the method for the present invention
In also related to duty ONU, this kind of ONU can with normal response OLT distribution be used for send
The upstream bandwidth of uplink business data.
In addition, the present invention can also be distributed a use by OLT to all ONU being in login state
Carrying out, in ONU, the upstream bandwidth that registration activates, process herein is prior art, repeats no more.This
Mainly the ONU of sleep state and wake states is discussed in bright.
OLT can distribute one or more shared upstream bandwidths, this shared upstream bandwidth to ONU termly
Change to OLT return state for ONU.Here, the change of ONU state refers to that ONU is from sleep state
Proceed to wake states.
OLT can also share upstream bandwidth according to the order of network management system to ONU distribution.
OLT is that upstream bandwidth is shared in distribution termly, therefore, it can save to greatest extent upstream bandwidth.
Shared upstream bandwidth can be distributed to by OLT by the bandwidth distribution structure of Bandwidth map in downlink frame
ONU.Wherein, the Alloc-ID in bandwidth distribution structure is 111111111110, is used for indicating this to share
Row bandwidth changes for ONU return state, and the value of certain Alloc-ID can also have other setting
Mode, as long as according to the value of Alloc-ID, ONU can determine that this shared upstream bandwidth is to return shape for ONU
State changes；In bandwidth distribution structure the value of StartTime be the value of xx, StopTime be xx+y.
It is pointed out that OLT and ONU can by offered for notify state change in the way of, as
By PLOAM message, ONU informs that OLT self proceeds to wake states, then OLT needs to distribute bandwidth
The value of the bit 10 in the Flags territory in structure is configured, and when for 1, represents that ONU can send
PLOAM message；When for 0, represent that ONU cannot send PLOAM message.
ONU can also be entered by ONU management control interface information or GEM frame notice OLT self
Enter wake states.
It addition, when ONU is by PLOAM message, ONU management control interface information or GEM frame
When notice OLT self enters wake states, the instructions field of uplink frame is the value of standard default；In GPON system
In system, the value of StartTime be the value of xx, StopTime be that xx+y represents: ONU is the of uplink frame
Xx byte sends PLOAM message, ONU management control interface information or GEM frame, at xx+y word
Joint stops sending, and the minimum value of y is 2；If XG-PON system, the value of StartTime be xx,
The value of Grantsize is that y represents: ONU completes the transmission of PLOAM message in the xth x byte of uplink frame,
Or start to transmit ONU management control interface information or GEM frame, the byte of transmission in xth x byte
Number is Grantsize.
Step 104: be in after the ONU of off working state receives shared upstream bandwidth, inform OLT self
Proceed to wake states and need to send upstream data.
ONU selects a shared upstream bandwidth from one or more shared upstream bandwidths, returns to OLT
The change of oneself state.If ONU quantity is more, when only one of which shares upstream bandwidth, may
Cause a part of ONU to compete less than this shared upstream bandwidth, then ONU just cannot return to OLT in time
The change of report oneself state, therefore, uses the mode to the ONU multiple shared upstream bandwidths of distribution to solve
Certainly this problem.
The state of the ONU being in off working state changes and is divided into two kinds of situations: one be receive shared up
After bandwidth, ONU revives, and proceeds to wake states；One is before receiving shared upstream bandwidth, and ONU is
Through reviving, it is in wake states.Both of these case can be regarded as ONU and proceed to Soviet Union from sleep state
The state of waking up.
Situation about changing based on above-mentioned ONU state, the ONU being in off working state receives shared up band
After width, it is 111111111110 that parsing obtains the value of Alloc-ID, then ONU determines this shared upstream bandwidth
Change for ONU return state；If ONU proceeds to wake states from sleep state and needs to send out
Send upstream data, then after this ONU waits a random delay according to the value of StartTime, on this is shared
In row bandwidth, the PLOAM message sending entitled Serial_Number_ONU to OLT, inform OLT
Self proceed to wake states and need to send upstream data, and being carried the ONU_ID of self by this message；
Further, this message can also carry above-mentioned random delay, in order to follow-up surveys ONU accurately
Away from.
The PLOAM message of entitled Serial_Number_ONU self just can carry above-mentioned random delay；
After can certainly be to other PLOAM message is extended in standard, carry random delay.
By ONU management control interface information or GEM frame, ONU can also inform that OLT self turns
Enter wake states and within comprising the uplink frame of described ONU management control interface information or GEM frame
Carry ONU_ID, it is also possible to carry random delay.
Further, ONU can also pass through PLOAM message, ONU management control interface information or
Person's GEM frame carries self and proceeds to the time of wake states from sleep state；Can not certainly carry, this
Time can will receive PLOAM message, ONU management control interface information or GEM frame with OLT
Time is considered ONU and proceeds to the time of wake states.
Step 105:OLT distributes upstream bandwidth to the ONU proceeding to wake states.
The upstream bandwidth herein distributed is the transmission for upstream data.
OLT learns when ONU proceeds to wake states and needs to send upstream data, can have three kinds of process
Mode:
Mode one, OLT obtain the ONU_ID of the ONU that state changes, and thus can obtain and store before
This ONU enter the dormant time, and should according to the Time Calculation proceeding to wake states of this ONU
The sleep duration of ONU, if sleep duration exceedes default threshold value, then finds range to this ONU,
Equalize time delay to one and be sent to ONU, distributing upstream bandwidth for this ONU simultaneously；Otherwise, do not enter
Row range finding, directly distributes upstream bandwidth for this ONU；
Mode two,
OLT obtains the ONU_ID of the ONU that state changes, it is not necessary to judge sleep duration, directly to this
ONU finds range, and obtains an equilibrium time delay and is sent to ONU, simultaneously up for this ONU distribution
Bandwidth；
Mode three, OLT obtain the ONU_ID of the ONU that state changes, it is not necessary to judge sleep duration,
Do not find range, directly distribute upstream bandwidth for ONU.
Wherein, that finds range ONU is embodied as prior art, and here is omitted.
Step 106: be in after the ONU of wake states receives upstream bandwidth, proceeds to duty, and
Upstream data is sent to OLT on upstream bandwidth.
If carried out range finding, then ONU updates the equilibrium time delay value of self according to the equilibrium time delay obtained,
And send upstream data to OLT on upstream bandwidth；If not done by range finding, then ONU is directly upper
Upstream data is sent to OLT in row bandwidth.
In order to realize said method, the invention provides the notice system that a kind of optical network unit state changes,
As in figure 2 it is shown, include: OLT and ONU, wherein:
OLT, for distributing one or more shared upstream bandwidths to ONU；
By described shared upstream bandwidth, ONU, when being used for being in off working state, informs that OLT self is by sleeping
Dormancy state proceeds to wake states.
Described off working state includes: sleep state and wake states.
ONU is further used for, at OLT before ONU distributes one or more shared upstream bandwidths, really
When determining self do not have upstream data send and proceed to sleep state, inform that OLT self proceeds to sleep state；
OLT is further used for, and distributes upstream bandwidth to the ONU being proceeded to wake states by sleep state；
Accordingly, ONU is further used for, and after the upstream bandwidth receiving OLT distribution, proceeds to work
State, and send upstream data to OLT on upstream bandwidth.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention
Enclose.
Claims (20)
1. the Notification Method that an optical network unit state changes, it is characterised in that the method includes:
Optical line terminal (OLT) obtains the mark (ONU_ID) of the optical network unit (ONU) that state changes,
Described ONU is found range, it is thus achieved that an equilibrium time delay is also sent to described ONU, simultaneously to described ONU
Distribute one or more shared upstream bandwidth；
By described shared upstream bandwidth, the ONU being in off working state informs that described OLT self is by sleeping
State proceeds to wake states.
The Notification Method that the most according to claim 1, optical network unit state changes, it is characterised in that institute
State off working state to include: sleep state and wake states.
The Notification Method that optical network unit state the most according to claim 1 or claim 2 changes, it is characterised in that
Before described OLT distributes one or more shared upstream bandwidth to ONU, the method also includes:
When ONU does not has upstream data send and proceed to sleep state, inform that OLT self proceeds to shape of sleeping
State；
Described OLT storage proceeds to the information of dormant ONU.
The Notification Method that the most according to claim 3, optical network unit state changes, it is characterised in that
Described ONU informs that OLT self proceeds to sleep state, particularly as follows: described ONU is to described OLT
Send physical layer operations management and safeguard (PLOAM) message, ONU management control interface information or Ji
Bit passive optical network method for packing (GEM) frame, notice OLT self proceeds to sleep state.
The Notification Method that the most according to claim 4, optical network unit state changes, it is characterised in that
The information of the ONU of described OLT storage includes the mark proceeding to dormant described ONU
(ONU_ID)；
Correspondingly, described OLT obtains described ONU_ID from described PLOAM message；
Or, described OLT is from comprising ONU management control interface information or the uplink frame of GEM frame
ONU-ID territory obtain described ONU-ID；
Or, OLT is according to the port id (port-ID) in ONU management control interface information or GEM frame
Described ONU-ID corresponding to described Port-ID is obtained from this locality.
The Notification Method that the most according to claim 5, optical network unit state changes, it is characterised in that institute
The information of the ONU stating OLT storage farther includes described ONU and proceeds to the dormant time；
Accordingly, the method farther includes: when the described OLT described ONU of acquisition proceeds to dormant
Between, particularly as follows: described OLT from described PLOAM message, ONU management control interface information or
GEM frame obtains described ONU and proceeds to the dormant time；Or, described OLT will receive described
The time of PLOAM message, ONU management control interface information or GEM frame is defined as described ONU
Proceed to the dormant time.
The Notification Method that the most according to claim 5, optical network unit state changes, it is characterised in that institute
State OLT and distribute one or more shared upstream bandwidths to ONU, particularly as follows:
Described OLT is termly or according to the order of network management system, by the band of Bandwidth map in downlink frame
One or more shared upstream bandwidths are distributed to ONU by wide distribution structure.
The Notification Method that the most according to claim 7, optical network unit state changes, it is characterised in that institute
Stating and be in after the ONU of off working state receives the one or more shared upstream bandwidth, the method is entered
One step includes:
The described ONU being in off working state determines described according to the Alloc-ID of described bandwidth distribution structure
Share upstream bandwidth and inform that described OLT self is proceeded to wake states by sleep state for described ONU.
The Notification Method that the most according to claim 8, optical network unit state changes, it is characterised in that institute
State the ONU being in off working state by one or more shared upstream bandwidths inform described OLT self by
Sleep state proceeds to wake states, particularly as follows:
The described ONU being in off working state sends PLOAM message to described OLT, ONU manages control
Interface message processed or GEM frame, notice OLT self is proceeded to wake states by sleep state.
The Notification Method that the most according to claim 9, optical network unit state changes, it is characterised in that
The described ONU being in off working state sends PLOAM message to described OLT, ONU management control connects
Mouth message or GEM frame, particularly as follows:
It is in the ONU of off working state when proceeding to wake states and have upstream data to be sent, selects one
Individual shared upstream bandwidth, waits one according to the value of the time started (StartTime) of described bandwidth distribution structure
After individual random delay, to described OLT send described PLOAM message, ONU management control interface information,
Or GEM frame.
11. Notification Methods that optical network unit state changes according to claim 10, it is characterised in that
The method farther includes: described OLT is in the described ONU distribution being proceeded to wake states by sleep state
Row bandwidth.
12. Notification Methods changed according to optical network unit state described in claim 11, it is characterised in that
Described OLT distributes upstream bandwidth to the ONU proceeding to wake states, particularly as follows:
OLT obtains according to PLOAM message, ONU management control interface information or GEM frame and proceeds to
The ONU_ID of the described ONU of wake states, and proceed to sleep according to the described ONU_ID described ONU of acquisition
The time of dormancy state；Described ONU is proceeded to time of wake states deduct described in when proceeding to dormant
Between, obtain the sleep duration of described ONU；When described sleep duration exceedes default threshold value, to described
ONU finds range, and obtains an equilibrium time delay and is sent to described ONU, dividing for described ONU simultaneously
Join upstream bandwidth；When described sleep duration is not above the threshold value preset, it is directly in described ONU distribution
Row bandwidth.
13. Notification Methods changed according to optical network unit state described in claim 11, it is characterised in that
Described OLT distributes upstream bandwidth to the ONU proceeding to wake states, particularly as follows:
OLT obtains according to PLOAM message, ONU management control interface information or GEM frame and proceeds to
The ONU_ID of the described ONU of wake states, directly finds range to described ONU, obtains an equilibrium
Time delay is also sent to ONU, is that described ONU distributes upstream bandwidth simultaneously.
14. Notification Methods changed according to optical network unit state described in claim 11, it is characterised in that
Described OLT distributes upstream bandwidth to the ONU proceeding to wake states, particularly as follows:
OLT obtains according to PLOAM message, ONU management control interface information or GEM frame and proceeds to
The ONU_ID of the described ONU of wake states, is directly that described ONU distributes upstream bandwidth.
15. Notification Methods changed according to optical network unit state described in claim 12, it is characterised in that
The method farther includes: described OLT obtains described ONU and proceeds to the time of wake states, particularly as follows:
Described OLT is from described PLOAM message, ONU management control interface information or GEM frame
Obtain described ONU and proceed to the time of wake states；Or, described OLT will receive described PLOAM
The time of message, ONU management control interface information or GEM frame is defined as described ONU and proceeds to Soviet Union
The time of the state of waking up.
16. Notification Methods changed according to optical network unit state described in claim 12, it is characterised in that
The method farther includes:
Proceed to after the ONU of wake states receives described upstream bandwidth, proceed to duty, and described
Upstream data is sent to OLT on upstream bandwidth；Or, according to OLT send described equilibrium time delay in institute
State and send upstream data to OLT on upstream bandwidth.
The notice system that 17. 1 kinds of optical network unit states change, it is characterised in that this system includes: OLT
And ONU, wherein:
Described OLT, for obtaining the mark (ONU_ID) of the optical network unit (ONU) that state changes,
Described ONU is found range, it is thus achieved that an equilibrium time delay is also sent to described ONU, simultaneously to described ONU
Distribute one or more shared upstream bandwidth；
Described ONU, when being used for being in off working state, informs described OLT by described shared upstream bandwidth
Self is proceeded to wake states by sleep state.
The 18. notice systems changed according to optical network unit state described in claim 17, it is characterised in that
Described off working state includes: sleep state and wake states.
The 19. notice systems changed according to optical network unit state described in claim 17, it is characterised in that
Described ONU is further used for, OLT to ONU distribute one or more shared upstream bandwidths it
Before, determine and self do not have upstream data to send and when proceeding to sleep state, inform that described OLT proceeds to self
Sleep state.
The 20. notice systems changed according to optical network unit state described in claim 17, it is characterised in that
Described OLT is further used for, and distributes upstream bandwidth to the ONU being proceeded to wake states by sleep state；
Accordingly, described ONU is further used for, and after receiving described upstream bandwidth, proceeds to work shape
State, and send upstream data to OLT on described upstream bandwidth.
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| CN105049115B (en) * | 2015-08-17 | 2017-09-19 | 上海斐讯数据通信技术有限公司 | A kind of dormancy method and system based on EPON |
| CN112738659B (en) * | 2019-10-28 | 2022-06-14 | 华为技术有限公司 | Communication method based on passive optical network, related equipment and system |
| CN116208565A (en) * | 2021-11-30 | 2023-06-02 | 华为技术有限公司 | Data transmission method, optical transmitting device and optical receiving device |
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| CN101304281A (en) * | 2007-05-09 | 2008-11-12 | 日立通讯技术株式会社 | PON system optical line terminal and optical network unit capable of performing alarm transmission strategy |
| CN101729934A (en) * | 2008-10-24 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for allotting uplink bandwidth |
| CN101765030A (en) * | 2008-11-04 | 2010-06-30 | 西安新邮通信设备有限公司 | Method for realizing sleeping and waking mechanism of optical network unit of passive optical network |
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| KR100950337B1 (en) * | 2007-11-27 | 2010-03-31 | 한국전자통신연구원 | Apparatus and method efficient dynamic bandwidth allocation for TDMA based passive optical network |
| CN101383767B (en) * | 2008-10-23 | 2012-02-29 | 中兴通讯股份有限公司 | Uplink bandwidth allocation method and optical line terminal |
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| CN101304281A (en) * | 2007-05-09 | 2008-11-12 | 日立通讯技术株式会社 | PON system optical line terminal and optical network unit capable of performing alarm transmission strategy |
| CN101729934A (en) * | 2008-10-24 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for allotting uplink bandwidth |
| CN101765030A (en) * | 2008-11-04 | 2010-06-30 | 西安新邮通信设备有限公司 | Method for realizing sleeping and waking mechanism of optical network unit of passive optical network |
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