CN104956633B - Optical line terminal, distribution dot element, system and data stream scheduling method - Google Patents
Optical line terminal, distribution dot element, system and data stream scheduling method Download PDFInfo
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- CN104956633B CN104956633B CN201380003072.5A CN201380003072A CN104956633B CN 104956633 B CN104956633 B CN 104956633B CN 201380003072 A CN201380003072 A CN 201380003072A CN 104956633 B CN104956633 B CN 104956633B
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- 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
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- 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
- H04Q2011/0064—Arbitration, scheduling or medium access control aspects
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Abstract
The embodiment of the present invention provides a kind of optical line terminal, distribution dot element, system and data stream scheduling method.Optical line terminal OLT of the present invention, including：Receiving module, scheduler module and sending module；Wherein, receiving module is used to receive the data flow for being sent to multiple customer premises equipment, CPE CPE from network side, and data flow is stored in multiple buffering queues with corresponding to the CPE；Scheduler module is connected with receiving module, for the grouping information according to the CPE by the data stream scheduling belonged in the buffering queue corresponding to multiple CPE of same packet into same traffic queue；Sending module is used to the data flow in traffic queue being sent to DPU by the data flow connection established with distributing point cells D PU.The embodiment of the present invention reduces DPU complexity and power consumption, reduces the data flow connection number between DPU buffer requirement and OLT and DPU.
Description
Technical field
The present embodiments relate to Fibre Optical Communication Technology, more particularly to a kind of optical line terminal, distribution dot element, system and
Data stream scheduling method.
Background technology
EPON（Passive Optical Network, abbreviation PON）Technology is that a kind of point-to-multipoint optical fiber connects
Enter technology, it by office side optical line terminal（Optical Line Terminal, abbreviation OLT）, user side optical network unit
（Optical Network Unit, abbreviation ONU）Or ONT Optical Network Terminal（Optical Network Terminal, referred to as
ONT）And Optical Distribution Network（Optical Distribution Network, abbreviation ODN）Composition.So-called " passive ", refers to
Any active electronic device and electronic power supply are not contained in ODN, all by optical branching device（Splitter）Formed Deng passive device,
Therefore the cost of its management service is relatively low.And optical fiber is to distributing point（Fiber To The distribution point, referred to as
FTTdp）Distributing point（Distribution Point, abbreviation DP）To user resident（Customer Premises, abbreviation CP）
Equipment between be non-optical fiber, such as twisted-pair feeder, coaxial cable, power line；The equipment of DP sides is that active equipment distributes dot element
（Distribution Point Unit, abbreviation DPU）.
Fig. 1 is data stream scheduling schematic diagram in the prior art, as shown in figure 1, to realize that user resident is set in the prior art
It is standby（Customer Premises Equipment, abbreviation CPE）Data stream scheduling, the following method of generally use：In central office
（Central Office, abbreviation CO）Equipment OLT and DPU between, for each CPE create a GEM connection；In DPU, it is
Each CPE creates at least one buffering queue（According to different QoS demands, it may be necessary to multiple buffering queues）；In DPU, root
Configured according to QoS, the data of the buffering queue of multiple CPE in same packet are scheduled, are forwarded to the packet of the packet
In queue；Data flow data in packet queue is sent to CPE after ovennodulation, CPE by data flow it is demodulated after, then root
Corresponding data flow is filtered out according to the ID of oneself.
The problems of the prior art are that the buffering queue demand in DPU is bigger, and cost is high, and scheduling is realized in DPU
Mechanism power consumption is larger.
The content of the invention
The embodiment of the present invention provides a kind of optical line terminal, distribution dot element, system and data stream scheduling method, to overcome
The problem of DPU costs of the prior art are high, power consumption is big.
In a first aspect, the embodiment of the present invention provides a kind of optical line terminal OLT, including：
Receiving module, scheduler module and sending module；
Wherein, the receiving module is used to receive the data flow for being sent to multiple customer premises equipment, CPE CPE from network side, and
The data flow is stored in multiple buffering queues with corresponding to the CPE；
The scheduler module is connected with the receiving module, will belong to same point for the grouping information according to the CPE
The data stream scheduling in buffering queue corresponding to the CPE of group is into same traffic queue；
The sending module is connected with the scheduler module, for the data flow in the traffic queue to be passed through with dividing
The DPU is sent to the dot element DPU data flow connections established.
With reference in a first aspect, in the first possible implementation of first aspect, the receiving module is additionally operable to：Connect
The grouping information that the DPU is reported is received, the grouping information is when the DPU starts or the grouping information changes
When report.
With reference to the possible implementation of the first of first aspect or first aspect, second in first aspect may
Implementation in, the sending module is additionally operable to：
The traffic queue is sent to the map information of packet queue to the DPU；Wherein, the packet queue is institute
State the queue that the data flow in the traffic queue is stored in DPU.
Second aspect, the embodiment of the present invention provide a kind of distributing point cells D PU, including：
Receiving module, processing module and sending module；
Wherein, the receiving module is connected with the processing module, for the data by being established with optical line terminal OLT
Stream connection receives the data flow that the OLT is sent；The data flow is to be sent to multiple customer premises equipment, CPE CPE's from network side
The set of data flow；Wherein, the multiple CPE belongs to same packet according to the grouping information of the CPE；
The data flow that the processing module is used to send the OLT is stored into a packet queue；Wherein, the packet
Queue corresponds with the traffic queue；
The sending module is connected with the processing module, for sending the data flow stored in the packet queue.
With reference to second aspect, in the first possible implementation of second aspect, the receiving module is additionally operable to：
The traffic queue of the OLT transmissions is received to the map information of the packet queue.
With reference to the possible implementation of the first of second aspect or second aspect, second in second aspect may
Implementation in, the sending module is additionally operable to：
When the DPU starts or the grouping information changes, the grouping information is sent to the OLT.
The third aspect, the embodiment of the present invention provide a kind of passive optical network, including：
Optical line terminal as described in any in first aspect, first and second kind of possible implementation of first aspect
OLT and at least one distributing point as described in any in second aspect, first and second kind of possible implementation of second aspect
Cells D PU.
Fourth aspect, the embodiment of the present invention provide a kind of data stream scheduling method, including：
Receive and multiple customer premises equipment, CPE CPE data flow is sent to from network side, and the data flow is stored in more
In the individual buffering queue with corresponding to the CPE；
The data in buffering queue according to corresponding to the grouping information of the CPE will belong to the CPE of same packet
Stream is dispatched in same traffic queue；
Data flow in the traffic queue is sent to institute by the data flow connection established with distributing point cells D PU
State DPU.
With reference to fourth aspect, in the first possible implementation of fourth aspect, methods described also includes：
The grouping information that the DPU is reported is received, the grouping information is when the DPU starts or the packet letter
What breath reported when changing.
With reference to the possible implementation of the first of fourth aspect or fourth aspect, second in fourth aspect may
Implementation in, methods described also includes：
The traffic queue is sent to the map information of packet queue to the DPU；Wherein, the packet queue is institute
State the queue that the data flow in the traffic queue is stored in DPU.
5th aspect, the embodiment of the present invention provide a kind of data stream scheduling method, including：
The data flow of the OLT transmissions is received by the data flow connection established with optical line terminal OLT；The data flow
To be sent to the set of multiple customer premises equipment, CPE CPE data flow from network side；Wherein, the multiple CPE is according to the CPE
Grouping information belong to same packet；
The data flow that the OLT is sent is stored into a packet queue；Wherein, the packet queue and the data flow
Queue corresponds；
Send the data flow stored in the packet queue.
With reference to the 5th aspect, in the first possible implementation of the 5th aspect, the number that the OLT is sent
Before being stored according to stream into a packet queue, in addition to：
The traffic queue of the OLT transmissions is received to the map information of the packet queue.
With reference to the 5th aspect or the first possible implementation of the 5th aspect, second at the 5th aspect may
Implementation in, methods described also includes：
When the DPU starts or the grouping information changes, the grouping information is sent to the OLT.
6th aspect, the embodiment of the present invention provide a kind of optical line terminal equipment, including：
Processor and memory, the memory storage execute instruction are described when the optical line terminal equipment is run
Communicated between processor and the memory, execute instruction described in the computing device causes the optical line terminal equipment to hold
Method in row such as fourth aspect, first and second kind of possible implementation of fourth aspect.
7th aspect, the embodiment of the present invention provide a kind of distributing point unit, including：
Processor and memory, the memory storage execute instruction are described when the distributing point unit is run
Communicated between processor and the memory, execute instruction described in the computing device causes the distributing point unit to hold
The method in first and second kind of possible implementation in terms of row such as the 5th, in terms of the 5th.
Optical line terminal of the embodiment of the present invention, distribution dot element, system and data stream scheduling method, by OLT receive from
Network side is sent to multiple customer premises equipment, CPE CPE data flow, and the data flow is stored in it is multiple right with CPE institutes
In the buffering queue answered, and the buffering queue according to corresponding to the grouping information of the CPE will belong to the CPE of same packet
In data stream scheduling into same traffic queue, by the data flow in the traffic queue pass through and distribution dot element
The data flow connection that DPU is established is sent to the DPU, and DPU arrives the data flow received storage and the traffic queue pair
In the packet queue answered, wherein, the packet queue is corresponded with the traffic queue, and final DPU is sent to each CPE
The data flow stored in the packet queue, the scheduling feature in DPU are transferred in OLT, reduce DPU complexity and work(
Consumption, and reduce DPU buffer requirement, compared with prior art, without establishing buffering queue to each CPE, reduce
Data flow connection number between OLT and DPU, solve the problems, such as that DPU costs of the prior art are high, power consumption is big.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is data stream scheduling schematic diagram in the prior art；
Fig. 2 is the topological structure of the FTTdp systems of the embodiment of the present invention；
Fig. 3 is the structural representation of optical line terminal OLT embodiment one of the present invention；
Fig. 4 is the data stream scheduling schematic diagram of the embodiment of the present invention；
Fig. 5 is the structural representation of distributing point cells D PU embodiments one of the present invention；
Fig. 6 is structural representation of the optical fiber of the present invention to distributing point FTTdp system embodiments；
Fig. 7 is the flow chart of data stream scheduling method embodiment one of the present invention；
Fig. 8 is the flow chart of data stream scheduling method embodiment two of the present invention；
Fig. 9 is the structural representation of optical line terminal equipment embodiment one of the present invention；
Figure 10 is the structural representation of distributing point unit embodiment one of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 2 is the topological structure of the FTTdp systems of the embodiment of the present invention.
The embodiment of the present invention can be applied in FTTdp, as shown in Fig. 2 the topological feature of the present invention is：The OLT of office side
Connected between DPU equipment for optical fiber, agreement PON（Including GPON, EPON, 10GGPON, 10GEPON etc.）, DPU and CPE
Equipment between be the connection of non-optical fiber, can be copper cash, twisted-pair feeder, coaxial cable, power line etc., be P2MP between DPU and CPE
Connection, up-downgoing multiplex mode is TDMA.
Fig. 3 is the structural representation of optical line terminal OLT embodiment one of the present invention.Fig. 4 is the data of the embodiment of the present invention
Stream scheduling schematic diagram.The executive agent of the present embodiment is the optical line terminal OLT of office side, and the OLT can be by software and/or hard
Part is realized.The scheme of the present embodiment is applied in FTTdp systems.As shown in figure 3, the optical line terminal OLT 30 of the present embodiment can
With including：Receiving module 301, scheduler module 302 and sending module 303；Wherein, receiving module 301 is used to receive from network side
Multiple customer premises equipment, CPE CPE data flow is sent to, and data flow is stored in multiple buffering queues with corresponding to CPE
In；Scheduler module 302 is connected with receiving module 301, for the grouping information according to CPE that the CPE institutes for belonging to same packet is right
Data stream scheduling in the buffering queue answered is into same traffic queue；Sending module 303 is connected with scheduler module 302,
For the data flow in traffic queue to be sent into DPU by the data flow connection established with distributing point cells D PU.
Specifically, as shown in Figure 3,4, OLT receiving module 301 receives data flow corresponding to multiple CPE, and is stored
In multiple buffering queues corresponding with CPE.Above-mentioned CPE is belonged to same packet by scheduler module 302 according to CPE grouping information
CPE corresponding to buffering queue in data stream scheduling into same traffic queue.Here packet can be it is multiple,
The corresponding traffic queue of each packet.Sending module 303 by the data flow in above-mentioned traffic queue by with distribution
The data flow connection that dot element DPU is established is sent to DPU, so that DPU arrives the data flow storage received and traffic queue
In corresponding packet queue.Packet queue corresponds with traffic queue.Data flow connection corresponding to different PONs is not
Together, if GPON is GEM connections, 10G-GPON XGEM, ethernet passive optical network（Ethernet Passive Optical
Network, abbreviation EPON）, 10G-EPON be logical link identifier（Logical Link Identifier, abbreviation LLID）
Connection or VLAN（Virtual Local Area Network, abbreviation VLAN）Connection etc..
Alternatively, receiving module 301 is additionally operable to：Receive the grouping informations that report of DPU, grouping information be when DPU starts or
Reported when grouping information changes.
Specifically, receiving module 301 receives the CPE grouping information that DPU is reported, and scheduler module 302 is according to CPE packet
Information is scheduled to multiple CPE data flow, by the CPE of same packet data stream scheduling to same traffic queue
In.
Alternatively, sending module 303 is additionally operable to：
Traffic queue is sent to the map information of packet queue to DPU；Wherein, packet queue is data storage in DPU
The queue of data flow in flow queue.
Specifically, OLT sending module 303 sends traffic queue to the map information of packet queue, DPU roots to DPU
Map information stores the data flow of the traffic queue received into packet queue corresponding with traffic queue accordingly.
The present embodiment, receives the data flow for being sent to from network side multiple customer premises equipment, CPE CPE by OLT, and by institute
State data flow to be stored in multiple buffering queues with corresponding to CPE, and same packet will be belonged to according to CPE grouping information
The data stream scheduling in buffering queue corresponding to CPE is into same traffic queue, by the number in the traffic queue
The DPU is sent to by the data flow connection established with distributing point cells D PU according to stream, the scheduling feature in DPU is transferred to OLT
In, DPU complexity and power consumption are reduced, and reduce the company of the data flow between DPU buffer requirement and OLT and DPU
Number is connect, solves the problems, such as that DPU costs of the prior art are high, power consumption is big.
Fig. 5 is the structural representation of distributing point cells D PU embodiments one of the present invention.The executive agent of the present embodiment is distribution
Dot element DPU, the DPU can be realized by software and/or hardware.The scheme of the present embodiment is applied in FTTdp systems.Such as figure
Shown in 5, the distributing point cells D PU50 of the present embodiment can include：Receiving module 501, processing module 502 and sending module 503；
Wherein, receiving module 501 is connected with processing module 502, is received for the data flow connection by being established with optical line terminal OLT
The data flow that OLT is sent；Data flow is the set for the data flow that multiple customer premises equipment, CPE CPE are sent to from network side；Wherein,
Multiple CPE belong to same packet according to CPE grouping information；
The data flow that processing module 502 is used to send OLT is stored into a packet queue；Wherein, packet queue and number
Corresponded according to flow queue；
Sending module 503 is connected with processing module 502, for sending the data flow stored in packet queue.
Specifically, as shown in Figure 4,5, DPU receiving module 501 receives the data flow that OLT is sent, and processing module 502 will
The data flow that OLT is sent is stored into a packet queue, and data flow is to be sent to multiple CPE for belonging to same packet from network side
Data flow set.And existing DPU, as shown in figure 1, each corresponding CPE has the buffering team of a data storage stream
Row, and the data stream scheduling by multiple CPE is needed into packet queue, cost is high, and power consumption is big.
Data flow in packet queue is sent to each CPE by sending module 503 after ovennodulation etc. reason.
Alternatively, receiving module 501 is additionally operable to：
The traffic queue of OLT transmissions is received to the map information of packet queue.
Specifically, according to the map information of the traffic queue of reception to packet queue, the data flow received is stored
Into corresponding packet queue.
Alternatively, sending module 503 is additionally operable to：
When DPU starts or grouping information changes, grouping information is sent to OLT.
Specifically, when DPU starts or CPE grouping information changes, CPE grouping informations are sent to OLT, so as to
OLT is scheduled according to this grouping information to multiple CPE data flow.
The present embodiment, DPU receive the data flow of OLT transmissions by the data flow connection established with optical line terminal OLT；Number
According to stream to be sent to the set of multiple CPE data flow from network side, wherein, multiple CPE are to belong to according to CPE grouping information
Same packet, the data flow that OLT is sent is stored into a packet queue, wherein, packet queue and traffic queue are one by one
It is corresponding, the data flow stored in the packet queue is sent to each CPE, the scheduling feature in DPU is transferred in OLT, is dropped
Low DPU complexity and power consumption, and reduce DPU buffer requirement, do not have to give each CPE compared with prior art
Establish buffering queue, reduce the data flow connection number between OLT and DPU, solve DPU costs of the prior art it is high,
The problem of power consumption is big.
Fig. 6 is structural representation of the optical fiber of the present invention to distributing point FTTdp system embodiments, as shown in fig. 6, the present embodiment
System can include：Any optical line terminal OLT 30 and at least one distribution in above-mentioned optical line terminal OLT embodiment
Any distributing point cells D PU50 in dot element DPU embodiments.
Agreement in the FTTdp of the present embodiment can for example use arbitrary TDM PON agreements, as GPON, 10G-GPON,
EPON or 10G-EPON etc..
Fig. 7 is the flow chart of data stream scheduling method embodiment one of the present invention.The executive agent of the present embodiment is office side
Optical line terminal OLT, the OLT can be realized by software and/or hardware.The scheme of the present embodiment is applied in FTTdp systems.
As shown in fig. 7, the method for the present embodiment can include：
Step 701, reception are sent to multiple customer premises equipment, CPE CPE data flow from network side, and data flow is stored
In the buffering queue corresponding to multiple and CPE.
Data in step 702, the buffering queue according to corresponding to CPE grouping information will belong to the CPE of same packet
Stream is dispatched in same traffic queue.
Step 703, the data flow in traffic queue sent by the data flow connection established with distributing point cells D PU
To DPU.
Alternatively, the method for the present embodiment can also include：
The grouping information that DPU is reported is received, grouping information reports when DPU starts or grouping information changes.
Alternatively, the method for the present embodiment can also include：
Traffic queue is sent to the map information of packet queue to DPU.
The method of the present embodiment, the OLT of embodiment illustrated in fig. 3 can be used to perform the technical scheme of the present embodiment, in fact
Existing principle is similar with technique effect, and here is omitted.
Fig. 8 is the flow chart of data stream scheduling method embodiment two of the present invention, and the executive agent of the present embodiment is distributing point
Cells D PU, the DPU can be realized by software and/or hardware.The scheme of the present embodiment is applied in FTTdp systems.Such as Fig. 8
Shown, the method for the present embodiment can include：
Step 801, the data flow that OLT is sent is received by the data flow connection established with optical line terminal OLT；Data flow
To be sent to the set of multiple customer premises equipment, CPE CPE data flow from network side；Wherein, multiple CPE believe according to CPE packet
Breath belongs to same packet.
Step 902, the data flow for sending OLT are stored into a packet queue；Wherein, packet queue and traffic queue
Correspond.
Step 903, send the data flow stored in packet queue.
Alternatively, before data flow OLT sent is stored into a packet queue, in addition to：
The traffic queue of OLT transmissions is received to the map information of packet queue.
Alternatively, the method for the present embodiment can also include：
When DPU starts or grouping information changes, grouping information is sent to OLT.
The method of the present embodiment, the DPU of embodiment illustrated in fig. 5 can be used to perform the technical scheme of the present embodiment, in fact
Existing principle is similar with technique effect, and here is omitted.
Fig. 9 is the structural representation of optical line terminal equipment embodiment one of the present invention.As shown in figure 9, the present embodiment provides
Optical line terminal equipment 90 include processor 901 and memory 902.Optical line terminal equipment 90 can also include transmitter
903rd, receiver 904.Transmitter 903 can be connected with receiver 904 with processor 901.Wherein, transmitter 903 is used to send
Data or information, receiver 904 are used to receive data or information, and memory 902 stores execute instruction, works as optical line terminal equipment
During 90 operation, communicated between processor 901 and memory 902, processor 901 calls the execute instruction in memory 902, is used for
The technical scheme of embodiment of the method as shown in Figure 7 is performed, its implementing principle and technical effect is similar, and here is omitted.
Figure 10 is the structural representation of distributing point unit embodiment one of the present invention.As shown in Figure 10, the present embodiment carries
The distributing point unit 100 of confession includes processor 1001 and memory 1002.Distributing point unit 100 can also include hair
Emitter 1003, receiver 1004.Transmitter 1003 can be connected with receiver 1004 with processor 1001.Wherein, transmitter
1003 are used to send data or information, and receiver 1004 is used to receive data or information, and memory 1002 stores execute instruction, when
When distributing point unit 100 is run, communicated between processor 1001 and memory 1002, processor 1001 calls memory
Execute instruction in 1002, for performing the technical scheme of embodiment of the method as shown in Figure 8, its implementing principle and technical effect class
Seemingly, here is omitted.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can be passed through
Its mode is realized.For example, apparatus embodiments described above are only schematical, for example, the unit or module
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or module when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, equipment or module
Close or communicate to connect, can be electrical, mechanical or other forms.
The module illustrated as separating component can be or may not be physically separate, show as module
The part shown can be or may not be physical module, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of module therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (15)
- A kind of 1. optical line terminal OLT, it is characterised in that including：Receiving module, scheduler module and sending module；Wherein, the receiving module, which is used to receive, is sent to multiple customer premises equipment, CPE CPE data flow from network side, and by institute Data flow is stated to be stored in multiple buffering queues with corresponding to the CPE；The scheduler module is connected with the receiving module, will belong to same packet for the grouping information according to the CPE The data stream scheduling in buffering queue corresponding to the CPE is into same traffic queue；The sending module is connected with the scheduler module, for by the data flow in the traffic queue by with distributing point The data flow connection that cells D PU is established is sent to the DPU.
- 2. OLT according to claim 1, it is characterised in that the receiving module is additionally operable to：Receive what the DPU was reported The grouping information, the grouping information report when the DPU starts or the grouping information changes.
- 3. OLT according to claim 1 or 2, it is characterised in that the sending module is additionally operable to：The traffic queue is sent to the map information of packet queue to the DPU；Wherein, the packet queue is described It is used for the queue for storing the data flow in the traffic queue in DPU.
- A kind of 4. distributing point cells D PU, it is characterised in that including：Receiving module, processing module and sending module；Wherein, the receiving module is connected with the processing module, is connected for the data flow by being established with optical line terminal OLT Receive the data flow that the OLT is sent；The data flow is that multiple customer premises equipment, CPE CPE data flow is issued from network side Set；Wherein, the multiple CPE belongs to same packet according to the grouping information of the CPE；The data flow that the processing module is used to send the OLT is stored into a packet queue；Wherein, the packet queue Corresponded with the traffic queue；The sending module is connected with the processing module, for sending the data flow stored in the packet queue.
- 5. DPU according to claim 4, it is characterised in that the receiving module is additionally operable to：The traffic queue of the OLT transmissions is received to the map information of the packet queue.
- 6. the DPU according to claim 4 or 5, it is characterised in that the sending module is additionally operable to：When the DPU starts or the grouping information changes, the grouping information is sent to the OLT.
- A kind of 7. passive optical network, it is characterised in that including：Optical line terminal OLT as described in claim 1~2 is any and at least one as described in claim 4~5 is any Distributing point cells D PU.
- A kind of 8. data stream scheduling method, it is characterised in that including：Receive and multiple customer premises equipment, CPE CPE data flow be sent to from network side, and by the data flow be stored in it is multiple with In buffering queue corresponding to the CPE；Data flow in buffering queue according to corresponding to the grouping information of the CPE will belong to the CPE of same packet is adjusted Spend in same traffic queue；Data flow in the traffic queue is sent to by the data flow connection established with distributing point cells D PU described DPU。
- 9. according to the method for claim 8, it is characterised in that also include：The grouping information that the DPU is reported is received, the grouping information is when the DPU starts or grouping information hair Reported during raw change.
- 10. method according to claim 8 or claim 9, it is characterised in that also include：The traffic queue is sent to the map information of packet queue to the DPU；Wherein, the packet queue is described It is used for the queue for storing the data flow in the traffic queue in DPU.
- A kind of 11. data stream scheduling method, it is characterised in that including：The data flow of the OLT transmissions is received by the data flow connection established with optical line terminal OLT；The data flow be from Network side issues the set of multiple customer premises equipment, CPE CPE data flow；Wherein, the multiple CPE is according to the packet of the CPE Information belongs to same packet；The data flow that the OLT is sent is stored into a packet queue；Wherein, the packet queue and the traffic queue Correspond；Send the data flow stored in the packet queue.
- 12. according to the method for claim 11, it is characterised in that the data flow storage for sending the OLT to one Before in packet queue, in addition to：The traffic queue of the OLT transmissions is received to the map information of the packet queue.
- 13. the method according to claim 11 or 12, it is characterised in that also include：When DPU starts or the grouping information changes, the grouping information is sent to the OLT.
- A kind of 14. optical line terminal equipment, it is characterised in that including：Processor and memory, the memory storage execute instruction, when the optical line terminal equipment is run, the processing Communicated between device and the memory, execute instruction described in the computing device causes the optical line terminal equipment to perform such as Method described in any one of claim 8 to 9.
- A kind of 15. distributing point unit, it is characterised in that including：Processor and memory, the memory storage execute instruction, when the distributing point unit is run, the processing Communicated between device and the memory, execute instruction described in the computing device causes the distributing point unit to perform such as Method described in any one of claim 11 to 12.
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| PCT/CN2013/087778 WO2015074275A1 (en) | 2013-11-25 | 2013-11-25 | Optical line terminal, distribution point unit, system and data stream scheduling method |
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| CN109120325B (en) * | 2017-06-23 | 2023-04-18 | 中兴通讯股份有限公司 | Signal processing method and device of DPU receiver and storage medium |
| CN109803327B (en) * | 2017-11-16 | 2020-11-17 | 华为技术有限公司 | Communication method and device |
| US20220021629A1 (en) * | 2020-07-19 | 2022-01-20 | Mellanox Technologies, Ltd. | Coalescing packets based on hints generated by network adapter |
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| EP2719192B1 (en) * | 2011-06-28 | 2015-06-03 | Huawei Technologies Co., Ltd. | A method of providing end-to-end connection in a unified optical and coaxial network |
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