CN107302397B

CN107302397B - Passive optical network framework and its method and optical network device for realizing data transmission

Info

Publication number: CN107302397B
Application number: CN201610232412.7A
Authority: CN
Inventors: 张伟良; 李明生; 袁立权
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-04-14
Filing date: 2016-04-14
Publication date: 2019-11-15
Anticipated expiration: 2036-04-14
Also published as: CN107302397A; WO2017177549A1

Abstract

Disclosed herein is a kind of passive optical network framework and its realize method and optical network device that data are transmitted, optical line terminal OLT including supporting multichannel, and support one or more optical network unit ONUs being located under same optical distribution network ODN in one or more kinds of channels；Wherein, OLT/ONU obtains port number and/or corresponding channel that transmission data are supported, transmits needing the data transmitted to evenly distribute in respective channel, transmit pre-set data on other channels of same time or do not transmit data；ONU/OLT receives data on the channel that itself is supported, and correspondingly re-assemblies as needed to the data received according to transmission rule.The technical solution provided through the invention realizes the control for supporting the OLT of multi-wavelength to ONU, has reached rate adaptation.

Description

Passive optical network framework and its method and optical network device for realizing data transmission

Technical field

The present invention relates to, but not limited to passive optical network (PON, Passive Optical Network) technology, espespecially one Kind passive optical network framework and its method and optical network device for realizing data transmission.

Background technique

With the fast development of broadband services, user docks the demand into network bandwidth and increases substantially, passive optical network (PON, Passive Optical Network) is a kind of important technical of current user's access, as shown in Figure 1, existing Have in the structure composed of PON system, office's sidelight line terminal (OLT, Optical Line Terminal) by trunk optical fiber with Optical splitter connection, optical splitter pass through branch optical fiber and multiple user side optical network unit (ONU, Optical Network Unit it) connects, OLT and ONU are by a wavelength to communicating.

Currently, OLT can configure 4 or more uplink and downlink wavelength using multi-wavelength light module, more waves are supported for OLT Long scene, as shown in Fig. 2, down direction, multiple and different wavelength Xs_d0,λ_d1…λ_dnOptical wavelength is transmitted to after local side multiplex It distributes network (OWDN, Optical Wavelength Distribution Network), and is assigned to respectively according to different wave length In a ONU；Up direction, different user ONU emit different light wavelength lambdas_u0,λ_u1…λ_unIt is transmitted to after to OWDN and multiplex OLT.In this way, completing the uplink and downlink transmission of optical signal.Wherein, downstream wavelength λ_di(i=0,1 ... n) and upstream wavelength λ_ui (i=0,1 ... ... can n) work in identical wave band, can also work in different-waveband.

As it is clear from fig. 2 that in order to adapt to support the OLT of multi-wavelength, user side needs to dispose corresponding more support Single wavelength ONU respectively corresponds each wavelength.With the development of network and business, ONU need to support bigger handling capacity and bandwidth, ONU branch The number of wavelengths held from 1 gradually develop to support it is multiple, how to realize at the same ODN support different wave length number ONU with And how to realize upgrading evolution, there is presently no relevant technical solutions.

Summary of the invention

The present invention provides a kind of passive optical network framework and its realizes the method and optical network device of data transmission, Neng Goushi Support control of the OLT of multi-wavelength to ONU, now to reach rate adaptation.

In order to reach the object of the invention, the present invention provides a kind of passive optical network PON frameworks, comprising: supports multichannel Optical line terminal OLT, and support one or one be located under same optical distribution network ODN in one or more kinds of channels A above optical network unit ONU；Wherein,

OLT/ONU, for obtaining the port number and/or corresponding channel that transmission data are supported, the number that needs are transmitted It transmits, transmit pre-set data on other channels of same time or is not transmitted in respective channel according to evenly distributing Data；

ONU/OLT is correspondingly right according to rule is sent for receiving data on the channel that itself is supported, and as needed The data received are re-assemblied.

Optionally, the OLT is used for: obtaining the channel for needing the purpose ONU and purpose ONU of the data transmitted to support Number；

For each purpose ONU, needs the data transmitted to be equally divided into j parts for described, each part of data are distributed respectively Transmitted on each channel supported to purpose ONU, on the remaining a channel (i-j) the pre-set data of corresponding time tranfer or Do not transmit data；

Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is the port number that ONU is supported, j is Positive integer and j more than or equal to 1 are less than or equal to i.

Optionally, the OLT is also used to: by the data to be sent on each channel or after data fragmentation is packaged into data frame It is transferred to the purpose ONU.

Optionally, the pre-set data are the weights of idle idle data, and/or the data for needing to transmit Multiple, and/or other pre-set data.

Optionally, the purpose ONU is used for: the purpose ONU of j wavelength being supported to receive on 0~channel of channel (j-1) The data frame.

Optionally, the purpose ONU is also used to: according to the channel information and/or address information in the data frame and originally The channel information and/or address information on ground receive data and/or data fragmentation, carry out data weight to the data fragmentation received Group.

Optionally, the OLT is also used to distribute upstream bandwidth for ONU: the purpose ONU for supporting the channel j, in channel 0 Identical bandwidth is distributed on~channel (j-1) respectively, the bandwidth of channel j, channel (j+1) ... and the corresponding position channel (i-1) are not Distribution；

Optionally, the ONU is also used to: obtaining the upstream bandwidth that OLT is distributed on each channel, data are uniformly distributed It is sent in each upstream bandwidth, data is not sent on the wavelength that other do not obtain bandwidth allocation.

Optionally, the OLT is also used to: data frame is received on the channel that itself is supported, according in the data frame The channel information and/or address information of channel information and/or address information and local receive data and/or data fragmentation, and right The same ONU received carries out data recombination in the data fragmentation that identical time slot is sent；

And/or data frame is received on the channel that itself is supported, according to the bandwidth that itself gives the ONU to distribute, to reception The same ONU arrived carries out data recombination in the data fragmentation that identical time slot is sent.

The present invention also provides a kind of methods that PON framework realizes data transmission, comprising:

OLT/ONU obtains the port number and/or corresponding channel that transmission data are supported, the data for needing to transmit are uniform Distribution is transmitted in respective channel, is transmitted pre-set data on other channel waves of same time or is not transmitted number According to；

Wherein, OLT supports multichannel；ONU supports one or more kinds of channels and is located under same ODN.

Optionally, the OLT obtains the port number and/or corresponding channel that transmission data are supported, by need to transmit Data evenly distribute the transmission in respective channel

Obtain the port number for needing the purpose ONU and purpose ONU of the data transmitted to support；

Optionally, this method further include: the OLT by each channel data to be sent or data fragmentation be packaged into number According to being transferred to the purpose ONU after frame.

Optionally, the size of the corresponding outgoing data of same position is identical in the j channels.

Optionally, the transmission size of data that the channels the j are taken out every time be it is identical, the data frame has encapsulated At PON packaging method XGEM frame of new generation or medium access control mac frame size be identical；

The physical layer frame PHY Frame size for the data frame completed on the j channel is identical.

Optionally, in the framing sublayer FS framing of the data frame, the physical layer OAM PLOAM for being inserted into identical quantity disappears Breath and transmission bandwidth Mapping B Wmap entry；Alternatively,

All copy is a on all channels for the PLOAM message and BWmap entry for being sent to all ONU；Alternatively,

The PLOAM message for supporting the ONU in the channel j and BWmap are sent to only in channel 0, channel 1, channel 2 ... channel It is sent on j-1.

Optionally, this method further include:

When the OLT is that ONU distributes upstream bandwidth, for supporting the ONU in the channel j, at 0~channel of channel (j-1) Upper to distribute identical bandwidth respectively, the bandwidth of channel j, channel (j+1) ... and the corresponding position channel (i-1) are not distributed；

Optionally, this method further include:

The OLT receives data frame on the channel that itself is supported, according to the channel information and/or ground in the data frame The channel information and/or address information of location information and local receive data and/or data fragmentation, and to the same ONU received Data recombination is carried out in the data fragmentation that identical time slot is sent；

And/or data frame is received on the channel that itself is supported, according to the bandwidth that itself is distributed to ONU, to what is received Same ONU carries out data recombination in the data fragmentation that identical time slot is sent.

The present invention provides a kind of method that PON framework realizes data transmission again, comprising: supports the ONU in the channel j in channel Data frame is received on 0~channel (j-1)；

According to the channel information and/or ground of channel information and/or address information and the local ONU in the data frame received Location information receives data and/or data fragmentation, carries out data recombination to the data fragmentation received；

Wherein, j is the port number that ONU is supported, j is the positive integer more than or equal to 1 and j is less than or equal to i, and i is OLT branch The port number held.

Optionally, this method further include:

The ONU obtains the upstream bandwidth that OLT is distributed on each channel；

Data are uniformly distributed in each upstream bandwidth and are sent, are not sent on the wavelength that other do not obtain bandwidth allocation Data；

Wherein, distribution upstream bandwidth includes: the purpose ONU for supporting the channel j, on 0~channel of channel (j-1) respectively Identical bandwidth is distributed, the bandwidth of channel j, channel (j+1) ... and the corresponding position channel (i-1) are not distributed.

Invention further provides a kind of optical network devices, including the first acquisition module, first processing module；Wherein,

First obtains module, for obtaining the port number and/or corresponding channel that transmission data are supported；

First processing module is transmitted for evenly distributing the data for needing to transmit in respective channel, in same time Other channel waves on transmit pre-set data or do not transmit data.

Optionally, the first acquisition module is specifically used for: obtaining the purpose ONU and purpose for needing the data transmitted The port number that ONU is supported；

The first processing module is specifically used for:

Optionally, the first processing module is also used to: by the data to be sent or data fragmentation encapsulation on each channel At being transferred to the purpose ONU after data frame.

Optionally, the transmission size of data that the channels the j are taken out every time be it is identical, the data frame has encapsulated At XGEM frame or mac frame size be identical；

Optionally, in the FS framing of the data frame, the physical layer OAM PLOAM message and transmission of identical quantity are inserted into Bandwidth map BWmap entry；Alternatively,

The PLOAM message for supporting the ONU in the channel j and BWmap are sent in channel 0, channel 1, channel 2 ... channel j- It is sent on 1.

Optionally, the first processing module is also used to distribute upstream bandwidth for ONU, for supporting the channel j ONU, distributes identical bandwidth respectively on 0~channel of channel (j-1), and channel j, channel (j+1) ... and channel (i-1) it is corresponding The bandwidth of position is not distributed；

It optionally, further include receiving module, for receiving data frame on the channel that itself OLT is supported, according to institute The channel information and/or address information for stating channel information and/or address information and local in data frame receive data and/or number Data recombination is carried out in the data fragmentation that identical time slot is sent according to fragment, and to the same ONU received；

And/or data frame is received on the channel that itself OLT is supported, the band for giving the ONU to distribute according to itself Width carries out data recombination in the data fragmentation that identical time slot is sent to the same ONU received.

Optionally, the optical network device is arranged in the olt, or is independent community.

The present invention also provides a kind of optical network devices, comprising: second obtains module, Second processing module；Wherein,

Second obtains module, for receiving data frame on 0~channel of channel (j-1)；

Second processing module, for according in the data frame that receives channel information and/or address information and ONU it is local Channel information and/or address information receive data and/or data fragmentation, data recombination is carried out to the data fragmentation received；

Optionally, the second acquisition module is also used to: obtaining the upstream bandwidth that OLT is distributed on each channel；

The Second processing module is also used to: data being uniformly distributed in each upstream bandwidth and are sent, are not obtained at other It obtains and does not send data on the wavelength of bandwidth allocation；

Compared with prior art, PON framework provided by the present application includes: the optical line terminal OLT for supporting multichannel, and Support one or more optical network unit ONUs being located under same optical distribution network ODN in one or more kinds of channels； Wherein, OLT/ONU obtains port number and/or corresponding channel that transmission data are supported, the data transmitted will be needed uniformly to divide It fits over and is transmitted in respective channel, transmit pre-set data on other channels of same time or do not transmit data； ONU/OLT receives data on the channel that itself is supported.The technical solution provided through the invention realizes support multi-wavelength Control of the OLT to ONU, reached rate adaptation.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right Specifically noted structure is achieved and obtained in claim and attached drawing.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the structure composed schematic diagram of existing PON system；

Fig. 2 is that existing OLT supports the uplink and downlink of multi-wavelength to transmit schematic diagram of a scenario；

Fig. 3 is that the present invention realizes the PON network frame for supporting first embodiment of the ONU of different wave length at the same ODN Structure schematic diagram；

Fig. 4 is that the present invention realizes the PON network frame for supporting second embodiment of the ONU of different wave length at the same ODN Structure schematic diagram；

Fig. 5 is that the present invention realizes the PON network frame for supporting 3rd embodiment of the ONU of different wave length at the same ODN Structure schematic diagram；

Fig. 6 is the schematic diagram that the present invention evenly distributes data according to number of wavelengths；

Fig. 7 is the schematic diagram of the first embodiment of the ITU-T data downstream transmission based on PON framework of the present invention；

Fig. 8 is the schematic diagram of the first embodiment of the IEEE data downstream transmission based on PON framework of the present invention；

Fig. 9 is the schematic diagram of the second embodiment of the ITU-T data downstream transmission based on PON framework of the present invention；

Figure 10 is the schematic diagram of the second embodiment of the IEEE data downstream transmission based on PON framework of the present invention；

Figure 11 is the schematic diagram of the 3rd embodiment of the ITU-T data downstream transmission based on PON framework of the present invention；

Figure 12 is the schematic diagram of the 3rd embodiment of the IEEE data downstream transmission based on PON framework of the present invention；

Figure 13 is the schematic diagram of the embodiment of data upstream transmission under PON framework of the present invention；

Figure 14 is the composed structure schematic diagram of the first embodiment of optical network device of the present invention；

Figure 15 is the composed structure schematic diagram of the second embodiment of optical network device of the present invention.

Specific embodiment

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application Feature can mutual any combination.

Next-generation Ethernet passive optical network (NGEPON) is standardizing in discussion, and a kind of technology is Single wavelength rate Realize 25 giga bits per seconds (Gbps) (referred to as 25G), and can according to Single wavelength, 2 wavelength, 3 wavelength, 4 wavelength etc. into Row is gradually disposed, that is to say, that so that supporting that (port number is for 1 wavelength (port number 1), 2 wavelength (port number 2), 3 wavelength 3), the ONU of 4 wavelength (port number 4) etc. is in the same optical distribution network (ODN, Optical Distribution Network it coexists and is compatible under).It should be pointed out that the rate of each wavelength is identical and is 25G here, but in reality In the application of border, may there is a situation where that the rate of each wavelength is not fully identical, for example the rate of each wavelength can not It is same as 25G, the uplink and downlink rate of each wavelength still can also can use side of the invention with different etc., in this case Method.When every channel rate is identical, data to be sent are completely homogeneously to distribute on each sendaisle, and work as every channel When rate is not exactly the same, data to be sent are uniformly distributed on each sendaisle according to the speed ratio in each channel.Here is Several implementations proposed by the present invention:

Fig. 3 is that the present invention realizes that the network architecture of first embodiment of the ONU of support different wave length at the same ODN is shown It is intended to, as shown in figure 3, OLT is that Single wavelength rate realizes that 25Gbps, all ONU are that Single wavelength rate realizes 25Gbps, at this Under kind mode, all ONU only support Single wavelength, and OLT also supports Single wavelength, and wavelength is fixed on λ₀.At this point, ONU1, ONU2 ... The port number that ONUn is supported is 1.

Fig. 4 is that the present invention realizes that the network architecture of second embodiment of the ONU of support different wave length at the same ODN is shown It is intended to, as shown in figure 4, OLT is that 2 wavelength rates realize that 50Gbps, ONU1 and ONU2 are that Single wavelength rate realizes 25Gbps, ONU3 It is that 2 wavelength rates realize 50Gbps, in this manner, OLT supports 2 wavelength, and supports the ONU of 2 wavelength and support Single wavelength ONU coexist.Wherein, the wavelength of Single wavelength ONU is fixed as λ₀, the wavelength of 2 wavelength ONU is fixed as λ₀And λ₁.At this point, ONU1 and The port number that ONU2 is supported all is 1, and wavelength is fixed as λ₀；The port number that ONU3 is supported all is 2, and wavelength is fixed respectively For λ₀And λ₁。

Fig. 5 is that the present invention realizes that the network architecture of 3rd embodiment of the ONU of support different wave length at the same ODN is shown It is intended to, as shown in figure 5, OLT is that 4 wavelength rates realize that 100Gbps, ONU1 are that Single wavelength rate realizes 25Gbps, ONU2 is 2 waves Long rate realizes that 50Gbps, ONU3 are that 4 wavelength rates realize 100Gbps, and in this manner, OLT supports 4 wavelength, and supports 4 The ONU of wavelength, the ONU for supporting Single wavelength, and the ONU of 2 wavelength is supported to coexist.Wherein, the wavelength of Single wavelength ONU is fixed as λ₀, the wavelength of 2 wavelength ONU is fixed to λ₀And λ₁, the wavelength of 4 wavelength ONU is fixed to λ₀、λ₁、λ₂And λ₃.At this point, The port number that ONU1 is supported all is 1 and wavelength is fixed as λ₀；The port number that ONU2 is supported all is 2 and wavelength is fixed to λ₀With λ₁；The port number that ONU3 is supported all is 4 and wavelength is fixed to λ₀、λ₁、λ₂And λ₃。

It should be noted that Fig. 3~Fig. 5 is only for coexisting three ONU under the same ODN, but it is not used to limit Protection scope of the present invention is merely illustrative.

That is, PON framework of the present invention includes at least: supporting the OLT of multichannel, support one or more kinds of channels Be located at same ODN under one or more ONU, wherein

OLT/ONU obtains port number and/or corresponding channel that transmission data are supported, and the data for needing to transmit are equal Even distribution is transmitted in respective channel, is transmitted pre-set data on other channels of same time or is not transmitted number According to；

ONU/OLT receives data on the channel wave that itself is supported, and correspondingly docks according to transmission rule as needed The data received are re-assemblied.

It should be noted that the port number in aforementioned present invention PON framework, can be equal to number of wavelengths, can also be equal to light Fine number is also possible to the number of wavelengths in a plurality of optical fiber included.

For down direction:

OLT, for obtaining port number that the purpose ONU and purpose ONU of the data that need to transmit are supported and/or corresponding Channel；The data transmitted will be needed to evenly distribute in phase according to the port number of the purpose ONU of acquisition and the port number itself supported It answers and is transmitted on channel, transmit pre-set data on other channels of same time or do not transmit data.Here, accordingly Channel refer to: the channel that OLT and purpose ONU are supported, and other channels refer to: except corresponding logical in the channel that OLT is supported Channel other than road.

Purpose ONU is correspondingly right according to rule is sent for receiving data on the channel that itself is supported, and as needed The data received are re-assemblied.

Wherein,

OLT is specifically used for: obtaining the port number for needing the purpose ONU and purpose ONU of the data transmitted to support；For every A purpose ONU, needs the data transmitted to be equally divided into j parts for described, and each part of data are separately dispensed into purpose ONU support It is transmitted on each channel, the pre-set data of corresponding time tranfer or does not transmit data on the remaining a channel (i-j)；Its In, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J be ONU support port number, j be more than or equal to 1 positive integer and j is less than or equal to i.

Further, OLT is also used to: by each channel data to be sent or data fragmentation be packaged into data frame after pass It is defeated by the purpose ONU.

Correspondingly, purpose ONU is specifically used for: the purpose ONU of j wavelength being supported to receive data on 0~channel of channel (j-1) Frame.

Purpose ONU is also used to: according to the channel information of channel information and/or address information and local in data frame and/ Or address information receives data and/or data fragmentation, carries out data recombination to the data fragmentation received.

Wherein, pre-set data are idle idle data, and/or the repetition of data for needing to transmit, and/or other Pre-set data.

For up direction:

OLT is also used to distribute upstream bandwidth for ONU: the purpose ONU for supporting the channel j, at 0~channel of channel (j-1) Upper to distribute identical bandwidth respectively, the bandwidth of channel j, channel (j+1) ... and the corresponding position channel (i-1) are not distributed.

In this way, purpose ONU is also used to: obtaining the upstream bandwidth that OLT is distributed on each channel, data are uniformly distributed in It is sent in each upstream bandwidth, data is not sent on the wavelength that other do not obtain bandwidth allocation.

OLT be also used to itself support channel on receive data frame, according in the data frame channel information and/or The channel information and/or address information of address information and local receive data and/or data fragmentation, and same to what is received ONU carries out data recombination in the data fragmentation that identical time slot is sent；

Hereafter for convenience, it is described so that port number is equal to number of wavelengths as an example, but be not intended to limit the present invention Protection scope.

Based on PON framework of the present invention, the method for realizing data transmission includes:

For the side OLT, before the data (data) for needing to transmit enter queue (Queue),

Firstly, obtaining the purpose ONU that data is sent to and the number of wavelengths that purpose ONU is supported；Here, it is mentioned in operation layer The data of friendship is sent in request, carries wavelength information and/or purpose ONU information that data, the data of transmission in need are sent The number of wavelengths that purpose ONU and its support are extracted in request can be sent according to data Deng, OLT.It should be noted that the biography of data Defeated generally to have queue management, queue management can be an actual module, be also possible to a virtual module, such as and Together, data can first be placed into queue to other module synthesis, allow rear transmitter that can obtain data from queue and sent.

Then, the data transmitted will be needed to evenly distribute in respective wavelength according still further to the number of wavelengths of the purpose ONU of acquisition Transmission.

Wherein, the data transmitted will be needed to evenly distribute according to the number of wavelengths of the purpose ONU of acquisition to upload in respective wavelength It is defeated to specifically include:

Assuming that OLT supports i wavelength, ONU to support j wavelength, wherein i is positive integer more than or equal to 1, j for greater than Or positive integer equal to 1 and j are less than or equal to i.So, for each ONU, the data transmitted will be needed to be equally divided into j parts, it will Each part of data are separately dispensed on each wavelength of ONU support and transmit, and for remaining (i-j) a wavelength, then transmission is preparatory The data of setting do not transmit data.

In this way, ONU can by each wavelength of correspondence data to be sent or data fragmentation be packaged into data frame after pass It is defeated by purpose ONU.

Wherein, pre-set data can be idle (idle) data, and/or the data for needing to transmit repetition and/ Or other pre-set data are such as sent to other data, or the data for being sent to other ONU, etc. of purpose ONU.

Wherein, in up direction, since OLT has determined ONU sends number on which wavelength to the ONU bandwidth distributed According to therefore, it may not be necessary to transmit preset data on other wavelength and not transmit data directly.

Wherein,

By each part of data be separately dispensed into ONU support the corresponding wavelength of each wavelength on uniform transmission include: will be each Part data are respectively put into queue and evenly distribute and transmit on each wavelength that ONU is supported.

It is as follows that data transmission, which is described, to be realized to PON framework of the present invention below with reference to Fig. 5 citing, as shown in fig. 5, it is assumed that OLT supports 4 wavelength, ONU1 to support Single wavelength, ONU2 that 2 wavelength, ONU3 is supported to support 4 wavelength.

Fig. 6 is the schematic diagram for the embodiment that the present invention evenly distributes data according to number of wavelengths, in conjunction with Fig. 5, for number of wavelengths I.e. number of wavelengths is 1 ONU such as ONU1, the data transmitted will be needed entirely to be put into queue 0 (queue0)；And at other three An equal amount of idle data are put into queue, that is, queue1, queue2 and queue3；

The ONU such as ONU2 for being 2 to number of wavelengths will need the data transmitted to be uniformly such as divided into two parts, be respectively put into Queue0 and queue1, such as: odd bytes can be put into queue0, even bytes are put into queue1；And in queue2 The idle data of 1/2data size are respectively put into queue3；

The ONU such as ONU3 for being 4 for number of wavelengths will need the data transmitted to be uniformly such as divided into 4 parts, be respectively put into Queue0, queue1, queue2 and queue3, such as: the 1st byte is put into queue0, the 2nd byte is put into queue1, the 3rd byte Be put into queue2, the 4th byte is put into queue3, then, the 5th byte is put into queue0, the 6th byte is put into queue1, the 7th byte It is put into queue2, the 8th byte is put into queue3, and so on.

Fig. 7 is the schematic diagram of the first embodiment of the ITU-T data downstream transmission based on PON framework of the present invention, and Fig. 8 is base In the schematic diagram for the first embodiment that the IEEE data downstream of PON framework of the present invention is transmitted, framework as shown in connection with fig. 5, such as: If ONU supports Single wavelength, as shown in Figure 7, Figure 8, the data1 for needing to transmit is exactly in the case where ONU supports Single wavelength Transmission, entire data1 (1 is abbreviated as in attached drawing) are placed on queue0 and in corresponding wavelength X₀Upper transmission, and other queues are An equal amount of idle data are put into the same position of queue1, queue2 and queue3；For another example: if ONU supports 2 waves Long, as shown in Figure 7, Figure 8, the data2 (2 are abbreviated as in attached drawing) for needing to transmit is exactly the biography in the case where ONU supports 2 wavelength Defeated, data2 is equally divided into data2-1 (2-1 is abbreviated as in attached drawing) and data2-2 (2-2 is abbreviated as in attached drawing), wherein Data2-1 is placed on queue0 and in corresponding wavelength X₀Upper transmission, data2-2 are placed on queue1 and in corresponding wavelength Xs₁It uploads It is defeated, and an equal amount of idle data are put into the same position of other queue, that is, queue2 and queue3；For another example: if ONU Support 4 wavelength, as shown in Figure 7, Figure 8, the data3 for needing to transmit is exactly the transmission in the case where ONU supports 4 wavelength, data3 (3 are abbreviated as in attached drawing) be equally divided into data3-1 (3-1 is abbreviated as in attached drawing), data3-2 (3-2 is abbreviated as in attached drawing), Data3-3 (3-3 is abbreviated as in attached drawing) and data3-4 (3-4 is abbreviated as in attached drawing), wherein data3-1 be placed on queue0 and Corresponding wavelength X₀Upper transmission, data3-2 are placed on queue1 and in corresponding wavelength Xs₁Upper transmission, data3-3 are placed on queue2 simultaneously In corresponding wavelength X₂Upper transmission, data3-4 are placed on queue3 and in corresponding wavelength Xs₃Upper transmission.

In another embodiment, the idle number in first embodiment can be changed to the data for needing to send, i.e., not It repeats to send the data for needing to send on the wavelength of support.Specifically, in conjunction with Fig. 5, for number of wavelengths be 1 ONU such as ONU1 will need the data transmitted to be entirely put into queue0, and in other three queue, that is, queue1, queue2 and queue3 In be also placed in and need the data that transmits；

The ONU such as ONU2 for being 2 for number of wavelengths will need the data transmitted to be uniformly such as divided into two parts, be respectively put into Queue0 and queue1, such as: odd bytes can be put into queue0, even bytes are put into queue1；And it will need to pass Be divided into two parts of defeated data are respectively put into queue2 and queue3 again；

The ONU such as ONU3 for being 4 for number of wavelengths will need the data transmitted to be uniformly such as divided into 4 points, be respectively put into Queue0, queue1, queue2 and queue3, such as: the 1st byte is put into queue0, the 2nd byte is put into queue1, the 3rd byte Be put into queue2, the 4th byte is put into queue3, then, the 5th byte is put into queue0, the 6th byte is put into queue1, the 7th byte It is put into queue2, the 8th byte is put into queue3, and so on.

Fig. 9 is the schematic diagram of the second embodiment of the ITU-T data downstream transmission based on PON framework of the present invention, Tu10Wei The schematic diagram of the second embodiment of IEEE data downstream transmission based on PON framework of the present invention, framework as shown in connection with fig. 5, than Such as: if ONU supports Single wavelength, as shown in Figure 9, Figure 10, the data1 for needing to transmit is exactly the case where ONU supports Single wavelength Under transmission, entire data1 (1 is abbreviated as in attached drawing) is placed on queue0 and in corresponding wavelength X₀Upper transmission, and other queues An equal amount of entire data1 is put into the same position of queue1, queue2 and queue3；For another example: if ONU supports 2 Wavelength, as shown in Figure 9, Figure 10, the data2 (2 are abbreviated as in attached drawing) for needing to transmit are exactly in the case where ONU supports 2 wavelength Transmission, data2 is equally divided into data2-1 (2-1 is abbreviated as in attached drawing) and data2-2 (2-2 is abbreviated as in attached drawing), In, data2-1 is placed on queue0 and in corresponding wavelength X₀Upper transmission, data2-2 are placed on queue1 and in corresponding wavelength Xs₁On Transmission, and it is respectively put into data2-1 and data2-2 again in the same position of other queue, that is, queue2 and queue3；For another example: If ONU supports 4 wavelength, as shown in Figure 9, Figure 10, the data3 for needing to transmit is exactly the biography in the case where ONU supports 4 wavelength Defeated, data3 (3 are abbreviated as in attached drawing) is equally divided into data3-1 (3-1 is abbreviated as in attached drawing), data3-2 (writes a Chinese character in simplified form in attached drawing For 3-2), data3-3 (being abbreviated as 3-3 in attached drawing) and data3-4 (being abbreviated as 3-4 in attached drawing), wherein data3-1 is placed on Queue0 and in corresponding wavelength X₀Upper transmission, data3-2 are placed on queue1 and in corresponding wavelength Xs₁Upper transmission, data3-3 are put In queue2 and in corresponding wavelength X₂Upper transmission, data3-4 are placed on queue3 and in corresponding wavelength Xs₃Upper transmission.

In 3rd embodiment, the idle number in first embodiment can also be changed to other pre-set data, Pre-set data such as the received data of other ONU are sent on the wavelength that target ONU is not supported.Specifically, In conjunction with Fig. 5, the ONU such as ONU1 for being 1 for number of wavelengths, the data transmitted will be needed entirely to be put into queue0；And it is possible to by pre- The data1 ' being first arranged entirely is put into queue1, wherein and data1 ' is intended for the data of other ONU other than target ONU, and its Idle data are put into his two queue, that is, queue2 and queue3；

Figure 11 is the schematic diagram of the 3rd embodiment of the ITU-T data downstream transmission based on PON framework of the present invention, Tu12Wei The schematic diagram of the 3rd embodiment of IEEE data downstream transmission based on PON framework of the present invention, framework as shown in connection with fig. 5, than Such as: if ONU supports Single wavelength, as shown in Figure 11, Figure 12, the data1 for needing to transmit is exactly the case where ONU supports Single wavelength Under transmission, entire data1 (1 is abbreviated as in attached drawing) is placed on queue0 and in corresponding wavelength X₀Upper transmission, queue1's An equal amount of pre-set data1 ' is put into same position and in corresponding wavelength X₁Upper transmission, wherein data1 ' is The data of other ONU other than target ONU are issued, and are put into the same position of other queue, that is, queue2 and queue3 same The idle data of size；For another example: if ONU supports 2 wavelength, as shown in Figure 11, Figure 12, the data2 for needing to transmit is (simple in attached drawing It is written as 2) being exactly the transmission in the case where ONU supports 2 wavelength, data2 is equally divided into data2-1 and (is abbreviated as 2- in attached drawing 1) and data2-2 (2-2 is abbreviated as in attached drawing), wherein data2-1 is placed on queue0 and in corresponding wavelength X₀Upper transmission, Data2-2 is placed on queue1 and in corresponding wavelength X₁Upper transmission, and the same position of other queue, that is, queue2 and queue3 On be put into an equal amount of idle data；For another example: if ONU supports 4 wavelength to need to transmit as shown in Figure 11, Figure 12 Data3 is exactly the transmission in the case where ONU supports 4 wavelength, and data3 (3 are abbreviated as in attached drawing) is equally divided into data3-1 (3-1 is abbreviated as in attached drawing), data3-2 (3-2 is abbreviated as in attached drawing), data3-3 (3-3 is abbreviated as in attached drawing) and data3-4 (3-4 is abbreviated as in attached drawing), wherein data3-1 is placed on queue0 and in corresponding wavelength X₀Upper transmission, data3-2 are placed on Queue1 and in corresponding wavelength X₁Upper transmission, data3-3 are placed on queue2 and in corresponding wavelength Xs₂Upper transmission, data3-4 are put In queue3 and in corresponding wavelength X₃Upper transmission.

It should be noted that in Figure 12, when for sending idle, between several idle can also without frame head (H, Header), it is embodied in continuous idle.

Next-generation passive optical network (NG-PON2) is an important branch in PON technological evolvement, in NG-PON2, ginseng See related protocol it is found that data send encapsulation process generally comprise: data be first encapsulated into PON packaging method of new generation (XGEM, XG-PON Encapsulation Method) frame, XGEM frame includes expense and payload, carries XGEM port-mark in expense (Port ID)；Multiple XGEM frames are encapsulated into superframe again, include expense and payload in superframe, expense includes physical layer OAM (PLOAM, Physical Layer OAM) message, transmission bandwidth mapping (BWmap) bandwidth allocation etc.；Superframe passes through FEC etc. It encapsulates and carries out in physical layer frame (PHY Frame) again after reason, physical frame includes frame head and payload, and frame head is used for recipient's detectable substance Manage the initial position of frame.In addition, EPON/10GEPON is another important branch of PON evolution, referring to related protocol it is found that number Generally comprise according to the encapsulation process of transmission: data are first encapsulated into medium access control (MAC, Media Access Control) Frame, mac frame include expense and payload, and multiple mac frames are encapsulated into physical frame again, include expense and payload frame head in physical frame and net Lotus.

In the present invention, the size of the corresponding outgoing data of same position is identical in j wavelength.

In the present invention, the transmission size of data that j wavelength takes out every time be it is identical, encapsulate the XGEM frame or MAC of completion Frame sign is also identical.

In the present invention, physical layer frame (PHY Frame) size completed on j wavelength be it is identical, it is each in order to guarantee The data transmitted on wavelength do not misplace, further, further includes:

The physics of identical quantity is inserted into framing sublayer (FS, Framing Sublayer) framing for NG-PON2 Layer OAM (PLOAM, Physical Layer OAM) message and transmission bandwidth map (BWmap) entry；Alternatively,

All copy is a on all wavelengths for the PLOAM message and BWmap entry for being sent to all ONU, i.e., each wavelength On PLOAM message and BWmap entry all include issuing the PLOAM message and BWmap entry of all wavelengths；Alternatively,

The PLOAM message for supporting the ONU of j wavelength and BWmap are issued only in λ₀、λ₁、λ₂…λ_j-1Upper transmission.

From ITU-T downlink data transmission schematic diagram shown in Fig. 7, Fig. 9 and Figure 11 as it can be seen that same position pair in 4 queue The size for the outgoing data answered is identical；The transmission size of data that 4 queues are taken out every time be it is identical, encapsulate completion XGEM frame sign is also identical；

Physical layer frame (PHY Frame) size completed on 4 wavelength be it is identical, in order to guarantee to transmit on each wavelength Data do not misplace, further, further includes:

In FS framing, it is inserted into the PLOAM message and BWmap entry of identical quantity；Alternatively,

All copy is a on all wavelengths for the PLOAM message and BWmap entry for being sent to all ONU；Alternatively,

The PLOAM message for supporting the ONU of j wavelength and BWmap are sent to only in λ₀、λ₁、λ₂And λ_j-1Upper transmission.Such as: hair The PLOAM message for supporting the ONU of 2 wavelength and BWmap are given only in λ₀And λ₁Upper transmission is sent to the ONU's for supporting 4 wavelength PLOAM message and BWmap are in λ₀、λ₁、λ₂And λ₃Upper transmission.

Further, the downlink data that OLT is sent to ONU can be discontinuous, sends data in a manner of burst and such as exists In IEEE Ethernet passive optical network (EPON) system, specifically can be the mode of PLOAM/BWmap similar management information It is realized and is sent by the Multi-point Control Protocol (MPCP, Multi-Point Control Protocal) in such as IEEE EPON, MPCP can be sent as data, i.e., be uniformly such as evenly distributed on each wavelength and sent according to number of wavelengths.Certainly, MPCP can also To be sent on the wavelength that each ONU is supported, and idle data is sent on other wavelength or does not send data, for example, Since each ONU can be in λ₀Upper reception, therefore, MPCP can also be fixed on λ₀Upper transmission, λ₁、λ₂And λ₃The upper corresponding time Idle data is sent on position or does not send data.In addition, MPCP can also send portion on each wavelength.

Further, it is assumed that OLT supports i wavelength, the method for realizing data transmission for the side ONU, the present invention further include:

Support the ONU of j wavelength in λ₀~λ_(j-1)Upper reception data frame, and according to the wave in the data frame received with local Long message and/or address information receive data frame；Accordingly the data frame received is decapsulated according to the sending method of the side OLT, Data recombination is carried out to data fragmentation.At this point, if receiving idle frame on certain wavelength, and/or repeating data frame, directly Connect discarding.

Assuming that OLT supports i wavelength, and if ONU needs to send upstream data, the present invention realizes data transmission Method further include:

When OLT bandwidth allocation, for supporting the ONU of j wavelength, in λ₀~λ_(j-1)It is upper to distribute identical bandwidth respectively, and λ_j、 λ_(j+1)... and λ_(i-1)The bandwidth of corresponding position is not distributed then；

ONU sends upstream data in the bandwidth of distribution.

Figure 13 is the schematic diagram of the embodiment of data upstream transmission under PON framework of the present invention, supports the ONU of Single wavelength in wave Long λ₀On distribute to and send data frame in oneself bandwidth, in λ₁、λ₂、λ₃The position of upper corresponding time does not send data, OLT root Data frame is received with local wavelength information and/or address information according in the data frame received, it can also be according to OLT to ONU The bandwidth of distribution receives data frame；

Support the ONU of 2 wavelength in λ₀And λ₁On distribute to and send data frame in oneself bandwidth, in λ₂、λ₃The upper corresponding time Position do not send data, OLT is according in the data frame received and local wavelength information and/or address information receive data Frame can also receive data frame to the bandwidth that ONU is distributed according to OLT；According to the sending method of the side ONU to the data received point Piece carries out data recombination.

Support the ONU of 4 wavelength in λ₀、λ₁、λ₂And λ₃On distribute to and send data frame in oneself bandwidth, OLT is according to reception To data frame in and local wavelength information and/or address information receive data frame, can also be distributed according to OLT to ONU Bandwidth receives data frame；Data recombination is carried out to the data fragmentation received according to the sending method of the side ONU.

Still by taking Fig. 5 as an example, such as: the ONU1 for supporting Single wavelength, in λ₀Upper bandwidth allocation, and in λ₁、λ₂And λ₃Accordingly The bandwidth of position is not distributed then；Correspondingly, ONU is only in λ₀Data, λ are sent in the bandwidth of upper distribution₁、λ₂And λ₃On do not need yet Idle data；

For another example: the ONU2 for supporting 2 wavelength, in λ₀And λ₁It is upper to give distribution same band, and in λ₂And λ₃Corresponding position Bandwidth is not distributed；Correspondingly, ONU is only in λ₀And λ₁Data, λ are sent in the bandwidth of upper distribution₂And λ₃On do not need idle number yet According to；

For another example: the ONU3 for supporting 4 wavelength, in λ₀、λ₁、λ₂And λ₃Upper distribution same band；Correspondingly, 4 wavelength are supported ONU in λ₀、λ₁、λ₂And λ₃Data are sent in the bandwidth of upper distribution.

Figure 14 is that the composed structure schematic diagram of the first embodiment of optical network device of the present invention at least wraps as shown in figure 14 Include the first acquisition module, first processing module；Wherein,

Wherein,

First acquisition module is specifically used for: obtaining the channel for needing the purpose ONU and purpose ONU of the data transmitted to support Number；Correspondingly,

First processing module is specifically used for:

First processing module is also used to: by each channel data to be sent or data fragmentation be packaged into data frame after pass It is defeated by purpose ONU.

Wherein, pre-set data can be idle (idle) data, and/or the data for needing to transmit repetition and/ Or other pre-set data etc..

Wherein,

By every portion be separately dispensed into ONU support each wavelength on transmission include: each part of data are put into it is respective It in queue and distributes on each wavelength that ONU is supported and transmits respectively.

Further,

The size of the corresponding outgoing data of same position is identical in j channel.

The transmission size of data that j channel is taken out every time be it is identical, the XGEM frame or mac frame size for encapsulating completion are also It is identical.

The PHY Frame size completed on j channel be it is identical, in order to guarantee that the data transmitted on each wavelength are pretty good Position, further, further includes:

In FS framing, it is inserted into the PLOAM message and transmission BWmap entry of identical quantity；Alternatively,

All copy is a on all channels for the PLOAM message and BWmap entry for being sent to all ONU, i.e., each wavelength On PLOAM message and BWmap entry all include issuing the PLOAM message and BWmap entry of all wavelengths；Alternatively,

Be sent to support the channel j ONU PLOAM message and BWmap channel 0, channel 1, channel 2 ... channel j-1 (when It is here exactly λ when port number is equal to number of wavelengths₀、λ₁、λ₂And λ_j-1) on send.

Further, first processing module is also used to: when distributing upstream bandwidth for ONU, for supporting the channel j ONU, distributes identical bandwidth respectively on 0~channel of channel (j-1), and channel j, channel (j+1) ... and channel (i-1) it is corresponding The bandwidth of position is not distributed.

It further include receiving module, for receiving data frame on the channel that itself OLT is supported, according to the data frame In channel information and/or the channel information and/or address information of address information and local receive data and/or data fragmentation, And data recombination is carried out in the data fragmentation that identical time slot is sent to the same ONU received；

Optical network device shown in Figure 14 can be set in the olt, be also possible to independent community.

Figure 15 is that the composed structure schematic diagram of the second embodiment of optical network device of the present invention at least wraps as shown in figure 15 It includes, second obtains module, Second processing module；Wherein,

Second acquisition module is also used to: obtaining the upstream bandwidth that OLT is distributed on each channel；

Second processing module is also used to: data being uniformly distributed in each upstream bandwidth and are sent, do not obtain band at other Data are not sent on the wavelength of width distribution；

Device described in Figure 15 can be set in ONU, be also possible to independent community；

It should be pointed out that being related in the data processing of the embodiment of the present invention, data transmission and DRP data reception process Size, size of data frame of data block etc. are only to list a kind of implementation, for those skilled in the art, according to According to technical solution provided by the invention, become the size of data block, size of data frame etc. What change will be appreciated that and realize, it is not intended to limit the scope of protection of the present invention.

The above, preferred embodiments only of the invention, is not intended to limit the scope of the present invention.It is all this Within the spirit and principle of invention, any modification, equivalent substitution, improvement and etc. done should be included in protection model of the invention Within enclosing.

Claims

1. a kind of passive optical network PON framework characterized by comprising support the optical line terminal OLT of multichannel, Yi Jizhi Hold one or more optical network unit ONUs being located under same optical distribution network ODN in one or more kinds of channels；Its In,

OLT/ONU, the corresponding channel supported for obtaining transmission data, will need the data transmitted to evenly distribute corresponding It is transmitted on channel, transmit pre-set data on other channels of same time or does not transmit data；

ONU/OLT, it is regular correspondingly to reception according to sending for receiving data on the channel that itself is supported, and as needed To data re-assemblied.

2. PON framework according to claim 1, which is characterized in that the OLT is used for: obtaining the data for needing to transmit The port number that purpose ONU and purpose ONU is supported；

For each purpose ONU, needs the data transmitted to be equally divided into j parts for described, each part of data are separately dispensed into mesh Each channel supported ONU on transmit, the pre-set data of corresponding time tranfer or do not passed on the remaining a channel (i-j) Transmission of data；

Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J be ONU support port number, j be greater than Or positive integer equal to 1 and j are less than or equal to i.

3. PON framework according to claim 2, which is characterized in that the OLT is also used to: will be to be sent on each channel Data or data fragmentation are transferred to the purpose ONU after being packaged into data frame.

4. PON framework according to claim 2, which is characterized in that the pre-set data are idle idle data And/or the repetition of the data for needing to transmit.

5. PON framework according to claim 3, which is characterized in that the purpose ONU is used for: supporting the mesh of j wavelength ONU receive the data frame on 0~channel of channel (j-1).

6. PON framework according to claim 5, which is characterized in that the purpose ONU is also used to: according to the data frame In channel information and/or the channel information and/or address information of address information and local receive data and/or data fragmentation, Data recombination is carried out to the data fragmentation received.

7. PON framework according to claim 1, which is characterized in that the OLT is also used to distribute upstream bandwidth for ONU: right In the purpose ONU for supporting the channel j, identical bandwidth, channel j, channel (j+1) ... are distributed respectively on 0~channel of channel (j-1) It is not distributed with the bandwidth of the corresponding position channel (i-1)；

8. PON framework according to claim 7, which is characterized in that the ONU is also used to: obtaining OLT and divide on each channel Data are uniformly distributed in each upstream bandwidth and send, on the wavelength that other do not obtain bandwidth allocation by the upstream bandwidth matched Do not send data.

9. PON framework according to claim 7, which is characterized in that the OLT is also used to: on the channel that itself is supported Data frame is received, is believed according to the channel information of channel information and/or address information and local in the data frame and/or address Breath receives data and/or data fragmentation, and carries out data weight in the data fragmentation that identical time slot is sent to the same ONU received Group；

And/or data frame is received on the channel that itself is supported, according to the bandwidth that itself gives the ONU to distribute, to what is received Same ONU carries out data recombination in the data fragmentation that identical time slot is sent.

10. a kind of method that passive optical network PON framework realizes data transmission characterized by comprising

Optical line terminal OLT/optical network unit ONU obtains the corresponding channel that transmission data are supported, the number that needs are transmitted It transmits, transmit pre-set data on other channel waves of same time or is not passed in respective channel according to evenly distributing Transmission of data；

11. according to the method described in claim 10, it is characterized in that, the OLT obtain transmission data supported it is corresponding Channel, will need the data transmitted to evenly distribute the transmission in respective channel to include:

12. according to the method for claim 11, which is characterized in that this method further include: the OLT by each channel to Transmission data or data fragmentation are transferred to the purpose ONU after being packaged into data frame.

13. according to the method for claim 11, which is characterized in that the pre-set data are idle idle data And/or the repetition of the data for needing to transmit.

14. according to the method for claim 11, which is characterized in that in the channels the j same position it is corresponding to It is identical for sending out the size of data.

15. according to the method for claim 12, which is characterized in that the transmission data that the j channels are taken out every time Size be it is identical, the PON packaging method XGEM frame or medium access control mac frame of new generation that data frame encapsulation is completed are big Small is identical；

16. according to the method for claim 15, which is characterized in that in the framing sublayer FS framing of the data frame, insert Enter the physical layer OAM PLOAM message and transmission bandwidth Mapping B Wmap entry of identical quantity；Alternatively,

The PLOAM message for supporting the ONU in the channel j and BWmap are sent to only in channel 0, channel 1, channel 2 ... channel j-1 Upper transmission.

17. according to the method described in claim 10, it is characterized in that, this method further include:

When the OLT is that ONU distributes upstream bandwidth, for supporting the ONU in the channel j, divide on 0~channel of channel (j-1) Identical bandwidth is not distributed, and the bandwidth of channel j, channel (j+1) ... and the corresponding position channel (i-1) are not distributed；

18. according to the method described in claim 10, it is characterized in that, this method further include:

The OLT receives data frame on the channel that itself is supported, according to the channel information and/or address letter in the data frame The channel information and/or address information of breath and local receive data and/or data fragmentation, and to the same ONU received in phase Data recombination is carried out with the data fragmentation that time slot is sent；

And/or data frame is received on the channel that itself is supported, it is same to what is received according to the bandwidth that itself is distributed to ONU ONU carries out data recombination in the data fragmentation that identical time slot is sent.

19. a kind of method that passive optical network PON framework realizes data transmission characterized by comprising support the light in the channel j Network unit ONU receives data frame on 0~channel of channel (j-1)；

Believed according to the channel information of channel information and/or address information and the local ONU in the data frame received and/or address Breath receives data and/or data fragmentation, carries out data recombination to the data fragmentation received；

Wherein, j is the port number that ONU is supported, j is the positive integer more than or equal to 1 and j is less than or equal to i, and i is that optical link is whole The port number for holding OLT to support.

20. according to the method for claim 19, which is characterized in that this method further include:

Data are uniformly distributed in each upstream bandwidth and are sent, number is not sent on the wavelength that other do not obtain bandwidth allocation According to；

Wherein, distribution upstream bandwidth includes: the purpose ONU for supporting the channel j, is distributed respectively on 0~channel of channel (j-1) The bandwidth of identical bandwidth, channel j, channel (j+1) ... and the corresponding position channel (i-1) is not distributed.

21. a kind of optical network device, which is characterized in that the optical network device is arranged in optical line terminal OLT, or is independent Entity, optical network device include the first acquisition module, first processing module；Wherein,

First obtains module, the corresponding channel supported for obtaining transmission data；

First processing module is transmitted for evenly distributing the data for needing to transmit in respective channel, in its of same time He transmits pre-set data or does not transmit data on channel wave.

22. optical network device according to claim 21, which is characterized in that the first acquisition module is specifically used for: obtaining The port number that the purpose optical network unit ONU and purpose ONU for the data for taking needs to transmit are supported；

The first processing module is specifically used for:

Wherein, i is the port number that optical line terminal OLT is supported, i is the positive integer more than or equal to 1；J is the channel that ONU is supported Number, j is the positive integer more than or equal to 1 and j is less than or equal to i.

23. optical network device according to claim 22, which is characterized in that the first processing module is also used to: will be each Data to be sent or data fragmentation on channel are transferred to the purpose ONU after being packaged into data frame.

24. optical network device according to claim 22, which is characterized in that the pre-set data are idle idle The repetition of data and/or the data for needing to transmit.

25. optical network device according to claim 22, which is characterized in that same position pair in the j channels The size for the outgoing data answered is identical.

26. optical network device according to claim 23, which is characterized in that the hair that the j channels are taken out every time Sending size of data is PON packaging method XGEM frame of new generation or medium access control identical, that the data frame encapsulation is completed Mac frame size is identical；

27. optical network device according to claim 26, which is characterized in that in the FS framing of the data frame, insertion The physical layer OAM PLOAM message and transmission bandwidth Mapping B Wmap entry of identical quantity；Alternatively,

The PLOAM message for supporting the ONU in the channel j and BWmap are sent on channel 0, channel 1, channel 2 ... channel j-1 It sends.

28. optical network device according to claim 21, which is characterized in that the first processing module is also used to as ONU Upstream bandwidth is distributed, the ONU in the channel j described for support distributes identical bandwidth respectively on 0~channel of channel (j-1), and The bandwidth of channel j, channel (j+1) ... and the corresponding position channel (i-1) are not distributed；

29. optical network device according to claim 28, which is characterized in that further include receiving module, exist for the OLT Receive data frame on the channel that itself is supported, according in the data frame channel information and/or address information and local it is logical Road information and/or address information receive data and/or data fragmentation, and the same ONU received is sent in identical time slot Data fragmentation carries out data recombination；

And/or the OLT receives data frame on the channel that itself is supported, it is right according to the bandwidth that itself gives the ONU to distribute The same ONU received carries out data recombination in the data fragmentation that identical time slot is sent.

30. a kind of optical network device, which is characterized in that the optical network device is arranged in optical network unit ONU, or is independent Entity, optical network device include: the second acquisition module, Second processing module；Wherein,

Second processing module, for according in the data frame that receives channel information and/or address information and local logical of ONU Road information and/or address information receive data and/or data fragmentation, carry out data recombination to the data fragmentation received；

Wherein, j is the port number that optical network unit ONU is supported, j is the positive integer more than or equal to 1 and j is less than or equal to i, i The port number supported for optical line terminal OLT.

31. optical network device according to claim 30, which is characterized in that the second acquisition module is also used to: being obtained The upstream bandwidth that OLT is distributed on each channel；

The Second processing module is also used to: data being uniformly distributed in each upstream bandwidth and are sent, do not obtain band at other Data are not sent on the wavelength of width distribution；