CN106470366A - Channel arrangement method and device - Google Patents

Channel arrangement method and device Download PDF

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Publication number
CN106470366A
CN106470366A CN201510512336.0A CN201510512336A CN106470366A CN 106470366 A CN106470366 A CN 106470366A CN 201510512336 A CN201510512336 A CN 201510512336A CN 106470366 A CN106470366 A CN 106470366A
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channel
onu
bundle
passage
olt
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CN106470366B (en
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操日祥
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Nanjing ZTE New Software Co Ltd
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ZTE Corp
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Priority to PCT/CN2016/087296 priority patent/WO2017028623A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems

Abstract

The invention discloses a kind of channel arrangement method, channel arrangement method includes:Optical line terminal OLT obtains the corresponding data feedback channel of each down going channel;Each down going channel and its corresponding data feedback channel are bound a passage bundle by described OLT, and wherein, the down going channel in described passage bundle forms physical channel with data feedback channel binding arbitrary in described passage bundle.The invention also discloses a kind of channel configuration device.Up available bandwidth resources within passage bundle of the present invention are shared, up Dynamic Bandwidth Allocation is not affected by down going channel, any switching laws can be carried out between each data feedback channel, avoid the occurrence of the excessively idle situation of the excessively busy and some physical channel of some physical channels in PON, to avoid the waste of bandwidth.

Description

Channel arrangement method and device
Technical field
The present invention relates to communication technical field, more particularly, to channel arrangement method and device.
Background technology
Development with network technology, it is possible to use the industry such as the substantial amounts of voice of network transmission, data, video Business, the requirement therefore to bandwidth improves constantly, PON (Passive Optical Network, passive fiber Network) it is exactly to produce under this demand.PON system is generally by the optical line terminal OLT of office side (Optical Line Terminal, optical line terminal), user side ONU (Optical Network Unit, Optical network unit) and ODN (Optical Distribution Network, Optical Distribution Network) composition, lead to Frequently with point-to-multipoint network structure.ODN is by the passive light such as single-mode fiber and beam splitter, optical connector Device forms, and provides light-transmitting medium for the physical connection between OLT and ONU.In order to carry further Rise the bandwidth of network, in trunk optical fiber, transmit multichannel wavelength, Bing Mei road wavelength recycles time-division skill Art provides the PON system accessing, and is referred to as TWDM (Time wavelength Division Multiplexing, time-division wavelength-division multiplex) PON system.
The topological structure of TWDM PON system as shown in Figure 1, has multiple in TWDM PON OLT TWDM CT (Channel Termination, channel end), each TWDM CT process a pair of association Up-downgoing wavelength channel (this up-downgoing wavelength channel forms a physical channel) together, and for being operated in All ONU in this physical channel provide and access and safeguard service.It is upper and lower that different TWDM CT are processed Traveling wave long-channel all differs, as shown in Figure 1, the downstream signal CH1d of TWDM channel 1 with from ONU The upward signal CH1u sending is bound into work, and other TWDM channels are also similar, each ONU has and only can select to operate in a TWDM channel.The strict CT of TWDM PON system Binding, is the simply efficient working method of one kind, but, but it is dumb to some network application occasions , the Potential model of network very insufficient, in TWDM PON taking shown in Fig. 2 as a example In certain period or under certain configuration, the descending CH1d of channel 1, and the lower line number of the descending CH2d of channel 2 Reach comparable busy extent according to bandwidth shared by queue, reach more than the 90% of respective channel width, channel 1 up is in special busy state, reach channel at full capacity bandwidth 120%, the up of channel 2 is in Completely idle state.Now, the data of some ONU waiting state must be in channel 1, due to The restriction of TWDM PON CT binding, the upstream data in channel 1 cannot be in completely idle state Channel 2 transmission, this upstream bandwidth is now wasted.Same reason, when a channel Descending over loading, when one other channel is idle, the downlink bandwidth of idle channel is also waste.Can see Arrive, because channel loading is unbalanced, at some in particular cases, TWDM PON bandwidth can be caused The huge waste of resource.
Content of the invention
Present invention is primarily targeted at proposing a kind of channel arrangement method and device it is intended to solve PON net The technical problem of network bandwidth waste.
For achieving the above object, a kind of channel arrangement method that the present invention provides, described channel arrangement method Comprise the following steps:
Optical line terminal OLT obtains the corresponding data feedback channel of each down going channel;
Each down going channel and its corresponding data feedback channel are bound a passage bundle by described OLT, wherein, Down going channel in described passage bundle forms physical channel with data feedback channel binding arbitrary in described passage bundle.
Preferably, each down going channel and its corresponding data feedback channel are bound a passage by described OLT After the step of bundle, described channel arrangement method also includes step:
After optical network unit ONU is registered, described OLT obtains the passage that described ONU is located Bundle;
Described OLT obtains the first bandwidth parameter of described passage bundle, and according to described first bandwidth parameter is Described ONU distributes the second bandwidth parameter.
Preferably, described OLT obtains the first bandwidth parameter of described passage bundle, and according to described first band After wide parameter is the step that described ONU distributes the second bandwidth parameter, described channel arrangement method also includes Step:
Described OLT obtains corresponding described second bandwidth parameter of each ONU in each described passage bundle And the queuing message of each described ONU report;
Described OLT is according to default physical channel constraints, the corresponding second bandwidth ginseng of each ONU The queuing message of number and each described ONU report distributes minislot parameter and physical channel letter to ONU Breath, wherein, described minislot parameter includes time slot ID, slot length and time slot original position;
Described OLT sends each minislot parameter and physic channel information to corresponding ONU, for institute State ONU based on the physic channel information receiving and described minislot parameter to described OLT transmission data.
Preferably, described OLT is according to default physical channel constraints, each ONU corresponding The queuing message of two bandwidth parameters and each described ONU report distributes minislot parameter and thing to ONU The step of reason channel information includes:
Described OLT is according to corresponding described second bandwidth parameter of each ONU described and each The queuing message of ONU report distributes described time slot ID and slot length to ONU each described;
Described OLT constrains bar according to the corresponding described physical channel of each physical channel in described passage bundle Part, the corresponding time slot ID of each described ONU in described passage bundle and slot length are distributed to corresponding Physical channel, and set time slot original position in corresponding physical channel for each ONU.
Preferably, described OLT sends each minislot parameter and physic channel information to corresponding ONU, So that described ONU is passed to described OLT based on the physic channel information receiving and described minislot parameter After the step of transmission of data, described channel arrangement method also includes step:
When receiving the data that described ONU passes through its corresponding physical channel upload, described OLT obtains Take the data of same passage bundle;
Described OLT carries out converge operation to the data of same passage bundle, to reduce on each described ONU The data passing.
Additionally, for achieving the above object, the present invention also proposes a kind of channel configuration device, and described channel is joined Put device to include:
Acquisition module, for obtaining the corresponding data feedback channel of each down going channel;
Binding module, for each down going channel and its corresponding data feedback channel are bound a passage bundle, Wherein, the down going channel in described passage bundle and data feedback channel binding arbitrary in described passage bundle form physics Channel.
Preferably, described acquisition module, is additionally operable to, after optical network unit ONU is registered, obtain Passage bundle and the first bandwidth parameter of described passage bundle that described ONU is located;Described channel configuration device Also include distribute module, for being described ONU distribution the second bandwidth ginseng according to described first bandwidth parameter Number.
Preferably, described acquisition module, each ONU being additionally operable to obtain in each described passage bundle corresponds to Described second bandwidth parameter and each described ONU report queuing message;Described distribute module, It is additionally operable to according to default physical channel constraints, corresponding second bandwidth parameter of each ONU and each The queuing message of individual described ONU report distributes minislot parameter and physic channel information to ONU, wherein, Described minislot parameter includes time slot ID, slot length and time slot original position;Described channel configuration device Also include sending module, for each minislot parameter and physic channel information are sent to corresponding ONU, So that described ONU is passed to described OLT based on the physic channel information receiving and described minislot parameter Transmission of data.
Preferably, described distribute module includes:
Allocation unit, for according to corresponding described second bandwidth parameter of each ONU described and each institute The queuing message stating ONU report distributes described time slot ID and slot length to ONU each described;
Described allocation unit, is additionally operable to according to the corresponding described physics of each physical channel in described passage bundle Channel constraint, by the corresponding time slot ID of each described ONU and slot length in described passage bundle Distribute to corresponding physical channel;
Setup unit, for setting time slot original position in corresponding physical channel for each ONU.
Preferably, described acquisition module, is additionally operable to receiving described ONU by its corresponding physics letter During the data that road uploads, obtain the data of same passage bundle;Described channel configuration device also includes converging mould Block, for carrying out converge operation to the data of same passage bundle, to reduce the number that each described ONU uploads According to.
Channel arrangement method proposed by the present invention and device, optical line terminal OLT obtains each down going channel Corresponding data feedback channel, and each down going channel and its corresponding data feedback channel are bound a passage bundle, Multiple data feedback channels wherein, down going channel in described passage bundle and arbitrary data feedback channel in described passage bundle Binding forms physical channel, the up available bandwidth after carrying out above-mentioned passage bundle binding, within passage bundle Resource is shared, and up Dynamic Bandwidth Allocation is not affected by down going channel, can be up logical at each Carry out any switching laws, it is to avoid the excessively busy and some of some physical channels in PON occurs between road The excessively idle situation of physical channel, to avoid the waste of bandwidth;Simultaneously in this programme, because one logical Down going channel in road bundle can form physical channel with the arbitrary data feedback channel in this passage bundle, then carrying out It is only necessary to switch over to data feedback channel during channel switching, only need upstream wavelength is tuned, Make the channel switching efficiency of PON higher.
Brief description
Fig. 1 is data feedback channel and down going channel configuration schematic diagram in prior art;
Fig. 2 is the network state schematic diagram of each channel in Fig. 1;
Fig. 3 is the schematic flow sheet of channel arrangement method first embodiment of the present invention;
Fig. 4 is the schematic diagram of passage bundle of the present invention;
Fig. 5 is the schematic flow sheet of channel arrangement method second embodiment of the present invention;
Fig. 6 is the schematic flow sheet of channel arrangement method 3rd embodiment of the present invention;
Fig. 7 distributes the refinement schematic flow sheet of physical channel and minislot parameter for the present invention for ONU;
Fig. 8 ONU of the present invention physical channel assigning process schematic diagram;
The schematic diagram that Fig. 9 is converged to the data receiving for OLT of the present invention;
Figure 10 is the high-level schematic functional block diagram of channel configuration device first embodiment of the present invention;
Figure 11 is the high-level schematic functional block diagram of channel configuration device second embodiment of the present invention;
Figure 12 is the high-level schematic functional block diagram of channel configuration device 3rd embodiment of the present invention;
Figure 13 is that the refinement functional module of distribute module in channel configuration device 3rd embodiment of the present invention is illustrated Figure.
The realization of the object of the invention, functional characteristics and advantage will be done further in conjunction with the embodiments referring to the drawings Explanation.
Specific embodiment
It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit Determine the present invention.
The present invention provides a kind of channel arrangement method.
With reference to Fig. 3, Fig. 3 is the schematic flow sheet of channel arrangement method first embodiment of the present invention.
The present embodiment proposes a kind of channel arrangement method, and described channel arrangement method includes:
Step S10, optical line terminal OLT obtains the corresponding data feedback channel of each down going channel;
In general PON, the passage in optical line terminal is TWDM passage, each TWDM Passage is divided into data feedback channel and down going channel, has generally comprised multiple data feedback channels and down going channel, and one Individual data feedback channel and a down going channel form a physical channel, and OLT is through the corresponding physics of this ONU Down going channel in channel sends data to ONU, upper in the physical channel that this ONU is located through it Row of channels sends data to OLT.
Step S20, each down going channel and its corresponding data feedback channel are bound one and are led to by described OLT Road bundle, wherein, the down going channel in described passage bundle binds shape with data feedback channel arbitrary in described passage bundle Become physical channel.
This data feedback channel can be by identical to the passage interpolation belonging to same passage bundle with the binding of down going channel Passage beam identification realize, the passage bundle belonging to each passage can be distinguished based on this passage beam identification.Each Data feedback channel and down going channel are provided with corresponding gap marker, can be based on each data feedback channel mark And the combination identification physical channel of down going channel mark.
It is understood that each down going channel can all bind one with data feedback channel all of in OLT Passage bundle, or down going channel also can bind a passage bundle with the part data feedback channel in OLT, tie up The number determining data feedback channel can be set as needed by user, that is, receiving passage bundle configuration-direct When, it is corresponding up that optical line terminal OLT obtains each down going channel based on described passage bundle configuration-direct The numbering of passage;The data feedback channel of each down going channel and reference numeral is bound by optical line terminal OLT; Optical line terminal OLT is to obtain each down going channel based on described passage bundle configuration-direct corresponding up logical During the numbering failure in road, each down going channel is all bound with described data feedback channel.
In the present embodiment, preferred version is to bind each down going channel with all data feedback channels, then The bandwidth resources of all data feedback channels are shared, up Dynamic Bandwidth Allocation be whole network so that on The transmission of row data is more flexible.
The schematic diagram being a passage bundle with reference to Fig. 4, passage bundle BCT1 is by the down going channel of channel 1 With the passage bundle of all data feedback channels composition, each data feedback channel therein and passage 1 down going channel composition (j=1,2 ... n), and 1 is down going channel sequence number, and j represents data feedback channel sequence number, n for one physical channel Ch1j It is uplink port number.Similar, passage bundle BCT2 is up logical with all by the down going channel of channel 2 The passage bundle of road composition, each data feedback channel therein forms a physical channel with channel 2 down going channel (j=1,2 ... n), and 2 is down going channel sequence number, and j represents data feedback channel sequence number, and n is uplink port number for Ch2j; The passage bundle that passage bundle BCTm is made up of with all data feedback channels the down going channel of passage m, therein Each data feedback channel forms a physical channel Chmj (j=1,2 ... n) with channel n downstream wavelength, under m is Row of channels sequence number, j represents data feedback channel sequence number, and n is uplink port number.Up logical in different passage bundles Road is partly or entirely overlapping.
The channel arrangement method that the present embodiment proposes, optical line terminal OLT obtains each down going channel and corresponds to Data feedback channel, and each down going channel and its corresponding data feedback channel are bound a passage bundle, institute The down going channel stated in passage bundle forms physical channel with data feedback channel binding arbitrary in described passage bundle, After carrying out above-mentioned passage bundle binding, the up available bandwidth resources within passage bundle are shared, up Dynamic Bandwidth Allocation is not affected by down going channel, can carry out any switching laws between each data feedback channel, Avoid the occurrence of the excessively idle feelings of the excessively busy and some physical channel of some physical channels in PON Condition, to avoid the waste of bandwidth;Simultaneously in this programme, because the down going channel in a passage bundle can be with Arbitrary data feedback channel composition physical channel in this passage bundle, then when carrying out channel switching it is only necessary to right Data feedback channel switches over, and only needs upstream wavelength to be tuned so that the channel of PON is cut Change efficiency higher.
Further, for improving the accuracy of channel configuration, channel of the present invention is proposed based on first embodiment Collocation method second embodiment, in the present embodiment with reference to Fig. 5, in the present embodiment, described step S20 Include step afterwards:
Step S30, after optical network unit ONU is registered, described OLT obtains described ONU The passage bundle being located;
Step S40, described OLT obtains the first bandwidth parameter of described passage bundle, and according to described first Bandwidth parameter is that described ONU distributes the second bandwidth parameter.
Corresponding first bandwidth parameter of each passage bundle may include upstream bandwidth parameter and downlink bandwidth ginseng Number, this upstream bandwidth parameter and downlink bandwidth parameter preferably include uplink bandwidth value and downlink bandwidth value, The bandwidth parameter of such as certain passage bundle is 10G/20G, then the upstream bandwidth parameter of this passage bundle is 10G, Downlink bandwidth parameter is 20G.Second bandwidth parameter includes ensureing bandwidth and maximum bandwidth, same passage The upstream bandwidth less than described passage bundle of the up guarantee bandwidth of all ONU in bundle, in same passage bundle The up maximum bandwidth of every ONU is less than the upstream bandwidth of described passage bundle.
When band width configuration is carried out to each ONU it is contemplated that the priority of each ONU, can be according to each The priority of individual ONU, for example can be preferential according to each ONU to each ONU distribution bandwidth parameter Level configures the bandwidth ratio of each ONU, according to each ONU corresponding bandwidth ratio and passage bundle First bandwidth parameter calculates corresponding second bandwidth parameter of each ONU.
Further, for improving the motility of communication, channel configuration of the present invention is proposed based on second embodiment Method 3rd embodiment, in the present embodiment with reference to Fig. 6, in the present embodiment, after described step S40 Including step:
Step S50, described OLT obtains each ONU corresponding described second in each described passage bundle Bandwidth parameter and the queuing message of each described ONU report;
Step S60, described OLT is according to default physical channel constraints, each ONU corresponding The queuing message of two bandwidth parameters and each described ONU report distributes minislot parameter and thing to ONU Reason channel information, wherein, described minislot parameter includes time slot ID, slot length and time slot original position;
In the present embodiment, may include communication priority, in physical channel constraints in this solicited message Will not be described here for the physical channel constraints in PON communication protocol, each ONU corresponding Two bandwidth parameters include ensureing bandwidth and maximum bandwidth.
With reference to Fig. 7, described step S60 is the concrete mistake that ONU distributes physical channel and minislot parameter Journey includes:
Step S61, described OLT is according to corresponding described second bandwidth parameter of each ONU described and each The queuing message of individual described ONU report distributes described time slot ID to ONU each described and time slot is long Degree;
Step S62, described OLT is according to the corresponding described physics letter of each physical channel in described passage bundle Road constraints, the corresponding time slot ID of each described ONU and slot length in described passage bundle are divided It is assigned to corresponding physical channel, and set time slot start bit in corresponding physical channel for each ONU Put.
Each ONU can collect information to be sent and buffer status, and by the information to be sent collected with And buffer status are packaged into uplink data frames through non-uniform encoding, and by uplink data frames in assigned timeslot Send to OLT, OLT, after receiving uplink data frames, extracts queuing message according to uplink data frames, And according to receive queuing message and corresponding second bandwidth parameter of each ONU calculate this ONU when Gap ID and slot length, this time slot ID and slot length are the next uplink data frames of ONU Time slot ID and slot length.
Then, the actual bandwidth constraints according to physical channel, to all passage bundle virtual assigned when Gap ID and corresponding slot length carry out permutation and combination, and time slot ID and corresponding slot length are distributed to Specific physical channel in this passage bundle, and set each time slot ID and the time slot of corresponding slot length exists Original position in the uplink frame of corresponding physical channel.
Referring in particular to Fig. 8, the TWDM PON DBA layer in OLT is the dynamic band of whole system rank Wide distribution, is allocated to the bandwidth of whole system, and specifically he can be the passage of bandwidth allocation to lower floor Bundle BCTi DBA (i=1,2 ...) layer, passage bundle BCTi DBA agency please to the ONU DBA under it Ask and be allocated.Taking TWDM PON 40G/40G lower/upper row symmetrical rate system as a example, TWDM PON DBA acts on behalf of to 4 BCTi of lower floor, and the bandwidth of up-downgoing distribution is respectively 10G/30G, 10G/5G, 10G/3G, 10G/2G, BCTi DBA acts on behalf of the priority according to the ONU under this layer, ONU DBA Request, it is ensured that bandwidth and system administration bandwidth, is Alloc id to ONU distribution time slot, and each Alloc The slot length (length) of id.The bandwidth of these distribution should not exceed the bandwidth ginseng of its BCTi DBA Bandwidth value in number, the Alloc id that all of BCTi DBA submits to, and the time slot of each Alloc id is long Degree will give the physical channel CH scheduler in OLT, be responsible for reality by physical channel CH scheduler Physical channel distributes.According to physical channel CH scheduler schedules arithmetic result, ONU will carry out physics letter Road switches, and the time slot on each physical channel is sent to ONU by OLT.
Step S70, described OLT sends each minislot parameter and physic channel information to corresponding ONU, for described ONU based on the physic channel information receiving and described minislot parameter to described OLT transmission data.
Described ONU, after receiving physic channel information, corresponds to according to physical channel in physical signal information Numbering (preferably include the numbering of data feedback channel and down going channel, data feedback channel numbering and descending logical The combination of road numbering is the numbering of physical channel), you can determine the corresponding wavelength of data feedback channel, ONU In channel tuner module be tuned according to this wavelength information, so that the wavelength of uplink data frames meets this Data feedback channel.
It is understood that OLT is every time when carrying out downlink data frame transmission, by the time slot of each ONU Parameter and physic channel information send to corresponding ONU.
Further, for improving efficiency and the accuracy of data transfer, this is proposed based on 3rd embodiment Invention channel arrangement method fourth embodiment, in the present embodiment, includes after described step S70:
Step S80, when receiving the data that described ONU passes through its corresponding physical channel upload, institute State the data that OLT obtains same passage bundle;
Step S90, described OLT carries out converge operation to the data of same passage bundle, to reduce each institute State the data of ONU upload
Because ONU is when sending each uplink data frames, it is required to carry out the switching of physical channel, then Need to carry out converge operation at OLT end to data, converge operation refers to same ONU in same passage bundle Each Frame sending is reconfigured according to point between sending or the numbering of Frame, that is, each The numbering of each ONU is carried, OLT is according to the volume of each ONU in the uplink data frames that ONU sends Number converge operation is carried out to the data of same ONU.Referring in particular to Fig. 9, all i-th passage bundle BCTi Interior all of TWDM passage can converge at a virtual BCTi passage beam port, BCTi passage bundle Port is an entity with TWDM PON multichannel system external connection.Different passage beam identifications Data passes through actual TWDM PON physical channel, then through BCT mark filter to different passages The data of beam identification makes a distinction, and the data of same BCTi passage beam identification will converge at corresponding BCTi Passage beam port.
The present invention further provides a kind of channel dividing arrangement.
With reference to Figure 10, Figure 10 is the high-level schematic functional block diagram of channel dividing arrangement first embodiment of the present invention.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram shown in Figure 10 is only The exemplary plot of one preferred embodiment, channel dividing arrangement shown in around Figure 10 for the those skilled in the art Functional module, the supplement of new functional module can be carried out easily;The title of each functional module is self-defined Title, is only used for assisting each program function block understanding channel dividing arrangement, is not used in the restriction present invention Technical scheme, the core of technical solution of the present invention is that the functional module of each self-defined title will be reached Function.
The present embodiment proposes a kind of channel dividing arrangement, and described channel dividing arrangement includes:
Acquisition module 10, for obtaining the corresponding data feedback channel of each down going channel;
In general PON, the passage in optical line terminal is TWDM passage, each TWDM Passage is divided into data feedback channel and down going channel, has generally comprised multiple data feedback channels and down going channel, and one Individual data feedback channel and a down going channel form a physical channel, and OLT is through the corresponding physics of this ONU Down going channel in channel sends data to ONU, upper in the physical channel that this ONU is located through it Row of channels sends data to OLT.
Binding module 20, for binding a passage by each down going channel and its corresponding data feedback channel Bundle, wherein, the down going channel in described passage bundle is formed with data feedback channel binding arbitrary in described passage bundle Physical channel.
This data feedback channel can be by identical to the passage interpolation belonging to same passage bundle with the binding of down going channel Passage beam identification realize, the passage bundle belonging to each passage can be distinguished based on this passage beam identification.Each Data feedback channel and down going channel are provided with corresponding gap marker, can be based on each data feedback channel mark And the combination identification physical channel of down going channel mark.
It is understood that each down going channel can all bind one with data feedback channel all of in OLT Passage bundle, or down going channel also can bind a passage bundle with the part data feedback channel in OLT, tie up The number determining data feedback channel can be set as needed by user, that is, receiving passage bundle configuration-direct When, it is corresponding up that optical line terminal OLT obtains each down going channel based on described passage bundle configuration-direct The numbering of passage;The data feedback channel of each down going channel and reference numeral is bound by optical line terminal OLT; Optical line terminal OLT is to obtain each down going channel based on described passage bundle configuration-direct corresponding up logical During the numbering failure in road, each down going channel is all bound with described data feedback channel.
In the present embodiment, preferred version is to bind each down going channel with all data feedback channels, then The bandwidth resources of all data feedback channels are shared, up Dynamic Bandwidth Allocation be whole network so that on The transmission of row data is more flexible.
The schematic diagram being a passage bundle with reference to Fig. 4, passage bundle BCT1 is by the down going channel of channel 1 With the passage bundle of all data feedback channels composition, each data feedback channel therein and passage 1 down going channel composition (j=1,2 ... n), and 1 is down going channel sequence number, and j represents data feedback channel sequence number, n for one physical channel Ch1j It is uplink port number.Similar, passage bundle BCT2 is up logical with all by the down going channel of channel 2 The passage bundle of road composition, each data feedback channel therein forms a physical channel with channel 2 down going channel (j=1,2 ... n), and 2 is down going channel sequence number, and j represents data feedback channel sequence number, and n is uplink port number for Ch2j; The passage bundle that passage bundle BCTm is made up of with all data feedback channels the down going channel of passage m, therein Each data feedback channel forms a physical channel Chmj (j=1,2 ... n) with channel n downstream wavelength, under m is Row of channels sequence number, j represents data feedback channel sequence number, and n is uplink port number.Up logical in different passage bundles Road is partly or entirely overlapping.
The channel configuration device that the present embodiment proposes, optical line terminal OLT obtains each down going channel and corresponds to Data feedback channel, and each down going channel and its corresponding data feedback channel are bound a passage bundle, institute The down going channel stated in passage bundle forms physical channel with data feedback channel binding arbitrary in described passage bundle, After carrying out above-mentioned passage bundle binding, the up available bandwidth resources within passage bundle are shared, up Dynamic Bandwidth Allocation is not affected by down going channel, can carry out any switching laws between each data feedback channel, Avoid the occurrence of the excessively idle feelings of the excessively busy and some physical channel of some physical channels in PON Condition, to avoid the waste of bandwidth;Simultaneously in this programme, because the down going channel in a passage bundle can be with Arbitrary data feedback channel composition physical channel in this passage bundle, then when carrying out channel switching it is only necessary to right Data feedback channel switches over, and only needs upstream wavelength to be tuned so that the channel of PON is cut Change efficiency higher.
Further, for improving the accuracy of channel configuration, channel of the present invention is proposed based on first embodiment Configuration device second embodiment, in the present embodiment with reference to Figure 11, in the present embodiment, described acquisition mould Block 10, is additionally operable to, after optical network unit ONU is registered, obtain the passage that described ONU is located Bundle and the first bandwidth parameter of described passage bundle;Described channel configuration device also includes distribute module 30, For being that described ONU distributes the second bandwidth parameter according to described first bandwidth parameter.
Corresponding first bandwidth parameter of each passage bundle may include upstream bandwidth parameter and downlink bandwidth ginseng Number, this upstream bandwidth parameter and downlink bandwidth parameter preferably include uplink bandwidth value and downlink bandwidth value, The bandwidth parameter of such as certain passage bundle is 10G/20G, then the upstream bandwidth parameter of this passage bundle is 10G, Downlink bandwidth parameter is 20G.Second bandwidth parameter includes ensureing bandwidth and maximum bandwidth, same passage The upstream bandwidth less than described passage bundle of the up guarantee bandwidth of all ONU in bundle, in same passage bundle The up maximum bandwidth of every ONU is less than the upstream bandwidth of described passage bundle.
When band width configuration is carried out to each ONU it is contemplated that the priority of each ONU, can be according to each The priority of individual ONU, for example can be preferential according to each ONU to each ONU distribution bandwidth parameter Level configures the bandwidth ratio of each ONU, according to each ONU corresponding bandwidth ratio and passage bundle First bandwidth parameter calculates corresponding second bandwidth parameter of each ONU.
Further, for improving the motility of communication, channel configuration of the present invention is proposed based on second embodiment Method 3rd embodiment, in the present embodiment with reference to Figure 12, in the present embodiment, described acquisition module 10, It is additionally operable to obtain corresponding described second bandwidth parameter of each ONU in each described passage bundle and each The queuing message of individual described ONU report;Described distribute module 30, is additionally operable to be believed according to default physics Corresponding second bandwidth parameter of road constraints, each ONU and the queue of each described ONU report Information distributes minislot parameter and physic channel information to ONU, and wherein, described minislot parameter includes time slot ID, slot length and time slot original position;Described channel configuration device also includes sending module 40, uses In sending each minislot parameter and physic channel information to corresponding ONU, for described ONU base In the physic channel information receiving and described minislot parameter to described OLT transmission data.
In the present embodiment, may include communication priority, in physical channel constraints in this solicited message Will not be described here for the physical channel constraints in PON communication protocol, each ONU corresponding Two bandwidth parameters include ensureing bandwidth and maximum bandwidth.
With reference to Figure 13, described distribute module 30 includes:
Allocation unit 31, for according to corresponding described second bandwidth parameter of each ONU described and each The queuing message of individual described ONU report distributes described time slot ID to ONU each described and time slot is long Degree;
Described allocation unit 31, is additionally operable to according to the corresponding described thing of each physical channel in described passage bundle Reason channel constraint, will be long to the corresponding time slot ID of each described ONU and time slot in described passage bundle Degree distribution is to corresponding physical channel;
Setup unit 32, for setting time slot original position in corresponding physical channel for each ONU.
Each ONU can collect information to be sent and buffer status, and by the information to be sent collected with And buffer status are packaged into uplink data frames through non-uniform encoding, and by uplink data frames in assigned timeslot Send to OLT, OLT, after receiving uplink data frames, extracts queuing message according to uplink data frames, And according to receive queuing message and corresponding second bandwidth parameter of each ONU calculate this ONU when Gap ID and slot length, this time slot ID and slot length are the next uplink data frames of ONU Time slot ID and slot length.
Then, the actual bandwidth constraints according to physical channel, to all passage bundle virtual assigned when Gap ID and corresponding slot length carry out permutation and combination, and time slot ID and corresponding slot length are distributed to Specific physical channel in this passage bundle, and set each time slot ID and the time slot of corresponding slot length exists Original position in the uplink frame of corresponding physical channel.
Referring in particular to Fig. 8, the TWDM PON DBA layer in OLT is the dynamic band of whole system rank Wide distribution, is allocated to the bandwidth of whole system, and specifically he can be the passage of bandwidth allocation to lower floor Bundle BCTi DBA (i=1,2 ...) layer, passage bundle BCTi DBA agency please to the ONU DBA under it Ask and be allocated.Taking TWDM PON 40G/40G lower/upper row symmetrical rate system as a example, TWDM PON DBA acts on behalf of to 4 BCTi of lower floor, and the bandwidth of up-downgoing distribution is respectively 10G/30G, 10G/5G, 10G/3G, 10G/2G, BCTi DBA acts on behalf of the priority according to the ONU under this layer, ONU DBA Request, it is ensured that bandwidth and system administration bandwidth, is Alloc id to ONU distribution time slot, and each Alloc The slot length (length) of id.The bandwidth of these distribution should not exceed the bandwidth ginseng of its BCTi DBA Bandwidth value in number, the Alloc id that all of BCTi DBA submits to, and the time slot of each Alloc id is long Degree will give the physical channel CH scheduler in OLT, be responsible for reality by physical channel CH scheduler Physical channel distributes.According to physical channel CH scheduler schedules arithmetic result, ONU will carry out physics letter Road switches, and the time slot on each physical channel is sent to ONU by OLT.
Described ONU, after receiving physic channel information, corresponds to according to physical channel in physical signal information Numbering (preferably include the numbering of data feedback channel and down going channel, data feedback channel numbering and descending logical Road numbering combination be physical channel numbering) can determine that the corresponding wavelength of data feedback channel, ONU In channel tuner module be tuned according to this wavelength information, so that the wavelength of uplink data frames meets this Data feedback channel.
It is understood that OLT is every time when carrying out downlink data frame transmission, by the time slot of each ONU Parameter and physic channel information send to corresponding ONU.
Further, for improving efficiency and the accuracy of data transfer, this is proposed based on 3rd embodiment Invention channel configuration device fourth embodiment, in the present embodiment, described acquisition module 10, it is additionally operable to When receiving the data that described ONU passes through its corresponding physical channel upload, obtain the number of same passage bundle According to;Described channel configuration device also includes convergence module, for converging to the data of same passage bundle Operation, to reduce the data that each described ONU uploads.
Because ONU is when sending each uplink data frames, it is required to carry out the switching of physical channel, then Need to carry out converge operation at OLT end to data, the converge operation that convergence module is carried out refers to will be same logical Each Frame that in road bundle, same ONU sends is carried out according to the numbering of point or Frame between sending Reconfigure, carry the numbering of each ONU in the uplink data frames that is, each ONU sends, converge Module carries out converge operation according to the numbering of each ONU to the data of same ONU.Referring in particular to Fig. 9, In all i-th passage bundle BCTi, all of TWDM passage can converge at a virtual BCTi passage Beam port, BCTi passage beam port is an entity with TWDM PON multichannel system external connection. The data of different passage beam identifications passes through actual TWDM PON physical channel, then identifies through BCT Filter makes a distinction to the data of different passage beam identifications, and the data of same BCTi passage beam identification will Converge at corresponding BCTi passage beam port.
It should be noted that herein, term " inclusion ", "comprising" or its any other variant Be intended to comprising of nonexcludability so that include a series of process of key elements, method, article or Person's device not only includes those key elements, but also includes other key elements being not expressly set out, or also Including for this process, method, article or the intrinsic key element of device.In the feelings not having more restrictions Under condition, the key element that limited by sentence "including a ..." it is not excluded that include this key element process, Also there is other identical element in method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-mentioned Embodiment method can be realized by the mode of software plus necessary general hardware platform naturally it is also possible to lead to Cross hardware, but the former is more preferably embodiment in many cases.Based on such understanding, the present invention's Technical scheme substantially in other words prior art is contributed partly can in the form of software product body Reveal to come, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, light Disk) in, including some instructions with so that a station terminal equipment (can be mobile phone, computer, service Device, air-conditioner, or network equipment etc.) execution each embodiment of the present invention described in method.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every The equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion, or directly or Connect and be used in other related technical fields, be included within the scope of the present invention.

Claims (10)

1. a kind of channel arrangement method is it is characterised in that described channel arrangement method comprises the following steps:
Optical line terminal OLT obtains the corresponding data feedback channel of each down going channel;
Each down going channel and its corresponding data feedback channel are bound a passage bundle by described OLT, its In, the down going channel in described passage bundle forms physics letter with data feedback channel binding arbitrary in described passage bundle Road.
2. channel arrangement method as claimed in claim 1 it is characterised in that described OLT by each After down going channel and its corresponding data feedback channel bind the step of a passage bundle, described channel configuration Method also includes step:
After optical network unit ONU is registered, described OLT obtains the logical of described ONU place Road bundle;
Described OLT obtains the first bandwidth parameter of described passage bundle, and according to described first bandwidth parameter is Described ONU distributes the second bandwidth parameter.
3. channel arrangement method as claimed in claim 2 is it is characterised in that described OLT obtains institute State the first bandwidth parameter of passage bundle, and be described ONU distribution second according to described first bandwidth parameter After the step of bandwidth parameter, described channel arrangement method also includes step:
Described OLT obtains corresponding described second bandwidth parameter of each ONU in each described passage bundle And the queuing message of each described ONU report;
Described OLT is according to default physical channel constraints, the corresponding second bandwidth ginseng of each ONU The queuing message of number and each described ONU report distributes minislot parameter and physical channel to ONU Information, wherein, described minislot parameter includes time slot ID, slot length and time slot original position;
Described OLT sends each minislot parameter and physic channel information to corresponding ONU, for Described ONU transmits number based on the physic channel information receiving and described minislot parameter to described OLT According to.
4. channel arrangement method as claimed in claim 3 is it is characterised in that described OLT is according to pre- If physical channel constraints, corresponding second bandwidth parameter of each ONU and each described ONU The queuing message of report distributes minislot parameter to ONU and the step of physic channel information includes:
Described OLT is according to corresponding described second bandwidth parameter of each ONU described and each The queuing message of ONU report distributes described time slot ID and slot length to ONU each described;
Described OLT constrains bar according to the corresponding described physical channel of each physical channel in described passage bundle Part, the corresponding time slot ID of each described ONU in described passage bundle and slot length are distributed to corresponding Physical channel, and set time slot original position in corresponding physical channel for each ONU.
5. channel arrangement method as claimed in claim 3 is it is characterised in that when described OLT is by each Gap parameter and physic channel information send to corresponding ONU, so that described ONU is based on receiving Physic channel information and described minislot parameter to after the step of described OLT transmission data, described channel Collocation method also includes step:
When receiving the data that described ONU passes through its corresponding physical channel upload, described OLT obtains Take the data of same passage bundle;
Described OLT carries out converge operation to the data of same passage bundle, to reduce on each described ONU The data passing.
6. a kind of channel configuration device is it is characterised in that described channel configuration device includes:
Acquisition module, for obtaining the corresponding data feedback channel of each down going channel;
Binding module, for each down going channel and its corresponding data feedback channel are bound a passage bundle, Wherein, the down going channel in described passage bundle and data feedback channel binding arbitrary in described passage bundle form physics Channel.
7. channel configuration device as claimed in claim 6, it is characterised in that described acquisition module, is gone back For after optical network unit ONU is registered, obtaining passage bundle and the institute that described ONU is located State the first bandwidth parameter of passage bundle;Described channel configuration device also includes distribute module, for according to institute Stating the first bandwidth parameter is that described ONU distributes the second bandwidth parameter.
8. channel configuration device as claimed in claim 7, it is characterised in that described acquisition module, is gone back For obtain corresponding described second bandwidth parameter of each ONU in each described passage bundle and each The queuing message of described ONU report;Described distribute module, is additionally operable to according to default physical channel about Corresponding second bandwidth parameter of bundle condition, each ONU and the queue letter of each described ONU report Breath distributes minislot parameter and physic channel information to ONU, and wherein, described minislot parameter includes time slot ID, slot length and time slot original position;Described channel configuration device also includes sending module, is used for Each minislot parameter and physic channel information are sent to corresponding ONU, so that described ONU is based on The physic channel information receiving and described minislot parameter are to described OLT transmission data.
9. channel configuration device as claimed in claim 8 is it is characterised in that described distribute module includes:
Allocation unit, for according to corresponding described second bandwidth parameter of each ONU described and each The queuing message of described ONU report distributes described time slot ID to ONU each described and time slot is long Degree;
Described allocation unit, is additionally operable to according to the corresponding described physics of each physical channel in described passage bundle Channel constraint, by the corresponding time slot ID of each described ONU and slot length in described passage bundle Distribute to corresponding physical channel;
Setup unit, for setting time slot original position in corresponding physical channel for each ONU.
10. channel configuration device as claimed in claim 8, it is characterised in that described acquisition module, is gone back For when receiving the data that described ONU passes through its corresponding physical channel upload, obtaining same logical The data of road bundle;Described channel configuration device also includes convergence module, for the data to same passage bundle Carry out converge operation, to reduce the data that each described ONU uploads.
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