CN107302397A - EPON framework and its method and optical network device for realizing data transfer - Google Patents

EPON framework and its method and optical network device for realizing data transfer Download PDF

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Publication number
CN107302397A
CN107302397A CN201610232412.7A CN201610232412A CN107302397A CN 107302397 A CN107302397 A CN 107302397A CN 201610232412 A CN201610232412 A CN 201610232412A CN 107302397 A CN107302397 A CN 107302397A
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data
onu
passage
olt
supported
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CN107302397B (en
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张伟良
李明生
袁立权
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2016/086906 priority patent/WO2017177549A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission
    • H04B10/25891—Transmission components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0003—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computing Systems (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

Disclosed herein is a kind of EPON framework and its realize the method and optical network device of data transfer, optical line terminal OLT including supporting multichannel, and support one or more optical network unit ONUs being located under same optical distribution network ODN of one or more kinds of passages；Wherein, OLT/ONU, obtains port number and/or corresponding passage that transmission data are supported, it would be desirable to which the data of transmission are evenly distributed to be transmitted in respective channel, and the data pre-set are transmitted on other passages of same time or data are not transmitted；ONU/OLT, receives data, and correspondingly the data received are re-assemblied according to transmission rule as needed on the passage that itself is supported.The technical scheme provided by the present invention, realizes controls of the OLT of support multi-wavelength to ONU, has reached rate adaptation.

Description

EPON framework and its method and optical network device for realizing data transfer
Technical field
The present invention relates to, but not limited to EPON (PON, Passive Optical Network) technology, Espespecially a kind of EPON framework and its method and optical network device for realizing data transfer.
Background technology
With the fast development of broadband services, user increases substantially to the demand of access network bandwidth, passive Optical-fiber network (PON, Passive Optical Network) is a kind of important technology hand of current user's access Section, as shown in figure 1, in the structure composed of existing PON system, office's sidelight line terminal (OLT, Optical Line Terminal) it is connected by trunk optical fiber with optical branching device, optical branching device passes through branch's light It is fine to be connected with multiple user side optical network units (ONU, Optical Network Unit), OLT and ONU By a wavelength to communicating.
At present, OLT can configure the up-downgoing wavelength of 4 or more using multi-wavelength light module, for OLT supports the scene of multi-wavelength, as shown in Fig. 2 down direction, multiple different wavelength Xsd0,λd1… λdnOptical wavelength distribution network (OWDN, Optical Wavelength is sent to after local side multiplex Distribution Network), and be assigned to according to different wave length in each ONU；Up direction, no Launch different light wavelength lambdas with user ONUu0,λu1…λunIt is sent to after to OWDN and multiplex OLT.So, the up-downgoing transmission of optical signal is completed.Wherein, downstream wavelength λdi(i=0,1 ... n) With upstream wavelength λui(i=0,1 ... ... can n) be operated in identical wave band, can also be operated in different-waveband.
As it is clear from fig. 2 that the OLT in order to adapt to support multi-wavelength, user side needs to dispose corresponding many branch The ONU of Single wavelength is held to correspond to each wavelength respectively.With the development of network and business, ONU needs branch Bigger handling capacity and bandwidth is held, the number of wavelengths that ONU is supported progressively is developed into from 1 supports multiple, such as What is realized the ONU that different wave length number is supported under same ODN and how to realize upgrading evolution, mesh The preceding technical scheme also without correlation.
The content of the invention
The present invention provides a kind of EPON framework and its realizes that the method and optical-fiber network of data transfer are set It is standby, controls of the OLT of support multi-wavelength to ONU can be realized, to reach rate adaptation.
In order to reach the object of the invention, the invention provides a kind of passive optical network PON framework, including： Support the optical line terminal OLT of multichannel, and support one or more kinds of passages be located at same light One or more optical network unit ONUs under distribution network ODN；Wherein,
OLT/ONU, for obtaining port number and/or corresponding passage that transmission data are supported, it would be desirable to The data of transmission are evenly distributed to be transmitted in respective channel, is transmitted on other passages of same time advance The data of setting do not transmit data；
ONU/OLT, for receiving data on the passage that itself is supported, and is advised according to transmission as needed Then correspondingly the data received are re-assemblied.
Alternatively, the OLT is used for：Obtain the purpose ONU and purpose ONU for the data for needing to transmit The port number of support；
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
Alternatively, the OLT is additionally operable to：Data to be sent on each passage or data fragmentation are encapsulated The purpose ONU is transferred to after into data frame.
Alternatively, the data that pre-set are the numbers of idle idle data, and/or needs transmission According to repetition, and/or other data pre-set.
Alternatively, the purpose ONU is used for：Support the purpose ONU of j wavelength in passage 0~logical The data frame is received on road (j-1).
Alternatively, the purpose ONU is additionally operable to：Channel information and/or ground in the data frame Location information and local channel information and/or address information receive data and/or data fragmentation, to what is received Data fragmentation carries out data recombination.
Alternatively, the OLT is additionally operable to distribute upstream bandwidth for ONU：Mesh for supporting j passages ONU, distribute identical bandwidth respectively on 0~passage of passage (j-1), passage j, passage (j+1) ... and The bandwidth of passage (i-1) relevant position is not distributed；
Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
Alternatively, the ONU is additionally operable to：The upstream bandwidth that OLT is distributed on each passage is obtained, will Data are uniformly distributed in transmission in each upstream bandwidth, do not obtain and are not sent out on the wavelength of bandwidth allocation at other Send data.
Alternatively, the OLT is additionally operable to：Data frame is received on the passage that itself is supported, according to described Channel information and/or address information and local channel information and/or address information in data frame receive number According to and/or data fragmentation, and the same ONU that receives is carried out in the data fragmentation that identical time slot is sent Data recombination；
And/or, data frame is received on the passage that itself is supported, is distributed according to itself to the ONU Bandwidth, the data fragmentation progress data recombination sent to the same ONU received in identical time slot.
Present invention also offers a kind of method that PON frameworks realize data transfer, including：
OLT/ONU obtains the port number and/or corresponding passage that transmission data are supported, it would be desirable to transmit Data evenly distribute in respective channel transmit, transmit and set in advance on other channel waves of same time The data put do not transmit data；
Wherein, OLT supports multichannel；ONU supports one or more kinds of passages and positioned at same ODN Under.
Alternatively, the OLT obtains the port number and/or corresponding passage that transmission data are supported, need to The data to be transmitted, which evenly distribute to transmit in respective channel, to be included：
Obtain the port number that the purpose ONU and purpose ONU of the data for needing to transmit are supported；
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
Alternatively, this method also includes：The OLT divides the data to be sent or data on each passage Piece, which is packaged into after data frame, is transferred to the purpose ONU.
Alternatively, the data that pre-set are the numbers of idle idle data, and/or needs transmission According to repetition, and/or other data pre-set.
Alternatively, the size of the corresponding outgoing data of same position is identical in the j passages.
Alternatively, the transmission size of data that the j passages take out every time is identical, the number The PON method for packing XGEM frames of new generation completed or medium access control mac frame size are encapsulated according to frame It is identical；
The physical layer frame PHY Frame sizes of the data frame completed on the j passage are identicals.
Alternatively, in the framing sublayer FS framing of the data frame, the physical layer of identical quantity is inserted OAM PLOAM message counts and transmission bandwidth Mapping B Wmap entry numbers；Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all passages Part；Or,
Be sent to the ONU for supporting the j passages PLOAM message and BWmap only passage 0, Sent on passage 1, passage 2 ... wavelength j.
Alternatively, this method also includes：
When the OLT is that ONU distributes upstream bandwidth, the ONU for supporting j passages, logical Identical bandwidth, passage j, passage (j+1) ... and passage (i-1) corresponding positions are distributed on 0~passage of road (j-1) respectively The bandwidth put is not distributed；
Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
Alternatively, this method also includes：
The OLT receives data frame on the passage that itself is supported, the passage letter in the data frame Breath and/or address information and local channel information and/or address information 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 that receives；
And/or, data frame is received on the passage that itself is supported, according to the bandwidth that itself is distributed to ONU, The data fragmentation progress data recombination sent to the same ONU received in identical time slot.
The present invention provides a kind of method that PON frameworks realize data transfer again, including：Support j passages ONU receive data frame on 0~passage of passage (j-1)；
The local passage letter of channel information and/or address information and ONU in the data frame received Breath and/or address information receive data and/or data fragmentation, and data weight is carried out to the data fragmentation received Group；
Wherein, j be ONU support port number, j for more than or equal to 1 positive integer and j be less than or Equal to i, i is the port number that OLT is supported.
Alternatively, this method also includes：
The ONU obtains the upstream bandwidth that OLT is distributed on each passage；
Data are uniformly distributed in each upstream bandwidth and sent, the wavelength for not obtaining bandwidth allocation at other On do not send data；
Wherein, distribution upstream bandwidth includes：Purpose ONU for supporting j passages, in 0~passage of passage (j-1) bandwidth of identical bandwidth, passage j, passage (j+1) ... and passage (i-1) relevant position is distributed on respectively Do not distribute.
Invention further provides a kind of optical network device, including the first acquisition module, first processing module； Wherein,
First acquisition module, for obtaining port number and/or corresponding passage that transmission data are supported；
First processing module, is transmitted for the data for needing to transmit to be evenly distributed in respective channel, The data pre-set are transmitted on other channel waves of same time or data are not transmitted.
Alternatively, first acquisition module specifically for：Obtain the purpose ONU for the data for needing to transmit And the port number that purpose ONU is supported；
The first processing module specifically for：
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
Alternatively, the first processing module is additionally operable to：By the data to be sent or data on each passage Burst, which is packaged into after data frame, is transferred to the purpose ONU.
Alternatively, the data that pre-set are the numbers of idle idle data, and/or needs transmission According to repetition, and/or other data pre-set.
Alternatively, the size of the corresponding outgoing data of same position is identical in the j passages.
Alternatively, the transmission size of data that the j passages take out every time is identical, the number It is identical to encapsulate the XGEM frames completed or mac frame size according to frame；
The physical layer frame PHY Frame sizes of the data frame completed on the j passage are identicals.
Alternatively, in the FS framing of the data frame, the physical layer OAM of identical quantity is inserted PLOAM message counts and transmission bandwidth Mapping B Wmap entry numbers；Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all passages Part；Or,
The ONU for supporting the j passages PLOAM message and BWmap are sent in passage 0, logical Sent on road 1, passage 2 ... passage j.
Alternatively, the first processing module is additionally operable to distribute upstream bandwidth for ONU, described for supporting The ONU of j passages, distributes identical bandwidth respectively on 0~passage of passage (j-1), and passage j, passage (j+1) ... the bandwidth with passage (i-1) relevant position is not distributed；
Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
Alternatively, in addition to receiving module, for receiving data on the passage that itself OLT is supported Frame, channel information and/or address information and local channel information and/or address in the data frame Information receives data and/or data fragmentation, and to number that the same ONU received is sent in identical time slot Data recombination is carried out according to burst；
And/or, data frame is received on the passage that itself OLT is supported, the ONU is given according to itself The bandwidth of distribution, the data fragmentation progress data weight sent to the same ONU received in identical time slot Group.
Alternatively, the optical network device is set in the olt, or is independent community.
Present invention also offers a kind of optical network device, including：Second acquisition module, Second processing module； Wherein,
Second acquisition module, for receiving data frame on 0~passage of passage (j-1)；
Second processing module, for according to the channel information and/or address information in the data frame that receives and Channel information local ONU and/or address information receive data and/or data fragmentation, to the number received Data recombination is carried out according to burst；
Wherein, j be ONU support port number, j for more than or equal to 1 positive integer and j be less than or Equal to i, i is the port number that OLT is supported.
Alternatively, second acquisition module is additionally operable to：Obtain the up band that OLT is distributed on each passage It is wide；
The Second processing module is additionally operable to：Data are uniformly distributed in each upstream bandwidth and sent, Other do not obtain and do not send data on the wavelength of bandwidth allocation；
Wherein, distribution upstream bandwidth includes：Purpose ONU for supporting j passages, in 0~passage of passage (j-1) bandwidth of identical bandwidth, passage j, passage (j+1) ... and passage (i-1) relevant position is distributed on respectively Do not distribute.
Compared with prior art, the PON frameworks that the application is provided include：Support that the optical link of multichannel is whole OLT is held, and supports be located under same optical distribution network ODN the one of one or more kinds of passages Individual or more than one optical network unit ONU；Wherein, OLT/ONU, obtains what transmission data were supported Port number and/or corresponding passage, it would be desirable to which the data of transmission are evenly distributed to be transmitted in respective channel, The data pre-set are transmitted on other passages of same time or data are not transmitted；ONU/OLT, Data are received on the passage that itself is supported.The technical scheme provided by the present invention, realizes many ripples of support Controls of the long OLT to ONU, has reached rate adaptation.
Other features and advantages of the present invention will be illustrated in the following description, also, partly from froming the perspective of Become apparent, or understood by implementing the present invention in bright book.The purpose of the present invention is excellent with other Point can be realized and obtained by specifically noted structure in specification, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes one of the application Point, schematic description and description of the invention is used to explain the present invention, does not constitute to the present invention's It is improper to limit.In the accompanying drawings：
Fig. 1 is the structure composed schematic diagram of existing PON system；
Fig. 2 is the up-downgoing transmission schematic diagram of a scenario that existing OLT supports multi-wavelength；
Fig. 3 realizes first embodiments of the ONU of support different wave length under same ODN for the present invention PON configuration diagram；
Fig. 4 realizes second embodiments of the ONU of support different wave length under same ODN for the present invention PON configuration diagram；
Fig. 5 realizes 3rd embodiments of the ONU of support different wave length under same ODN for the present invention PON configuration diagram；
Fig. 6 evenly distributes the schematic diagram of data for the present invention according to number of wavelengths；
The signal for the first embodiment that Fig. 7 transmits for the ITU-T data downstreams based on PON frameworks of the present invention Figure；
The signal for the first embodiment that Fig. 8 transmits for the IEEE data downstreams based on PON frameworks of the present invention Figure；
The signal for the second embodiment that Fig. 9 transmits for the ITU-T data downstreams based on PON frameworks of the present invention Figure；
The signal for the second embodiment that Figure 10 transmits for the IEEE data downstreams based on PON frameworks of the present invention Figure；
Figure 11 shows for the 3rd embodiment of the ITU-T data downstreams transmission based on PON frameworks of the present invention It is intended to；
The signal for the 3rd embodiment that Figure 12 transmits for the IEEE data downstreams based on PON frameworks of the present invention Figure；
Figure 13 be PON frameworks of the present invention under data upstream transmission embodiment schematic diagram；
Figure 14 is the composition structural representation of the first embodiment of optical network device of the present invention；
Figure 15 is the composition structural representation of the second embodiment of optical network device of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing Embodiments of the invention are described in detail.It should be noted that in the case where not conflicting, this Shen Please in embodiment and the feature in embodiment can mutually be combined.
Ethernet passive optical network (NGEPON) of future generation is standardized in discussion, there is a kind of technology It is that Single wavelength speed realizes 25 giga bits per seconds (Gbps) (referred to as 25G), and can be according to Single wavelength, 2 wavelength, 3 wavelength, 4 wavelength etc. are progressively disposed, that is to say, that so that support 1 ripple Long (port number is 1), 2 wavelength (port number is 2), 3 wavelength (port number is 3), 4 wavelength are (logical 4) etc. road number is ONU at same optical distribution network (ODN, Optical Distribution Network) Under coexist and compatible.It is pointed out that the speed of each wavelength is identical and is 25G here, But in actual applications, there may be the speed of each wavelength not fully identical situation, such as often The speed of individual wavelength can be differently configured from 25G, and the up-downgoing speed of each wavelength can also be different etc., this , still can be using method of the invention in the case of kind.It is to be sent when every channel rate is identical Data are completely homogeneously distributed on each sendaisle, and when every channel rate is incomplete same, are treated Data are sent to be uniformly distributed on each sendaisle according to the speed ratio of each passage.Here is that the present invention is carried Several implementations gone out：
Fig. 3 realizes first embodiments of the ONU of support different wave length under same ODN for the present invention Network architecture schematic diagram, as shown in figure 3, OLT, which is Single wavelength speed, realizes 25Gbps, all ONU All it is that Single wavelength speed realizes 25Gbps, in this manner, all ONU only support Single wavelength, OLT Also Single wavelength is supported, and wavelength is fixed on λ0.Now, the passage that ONU1, ONU2 ... ONUn are supported Number is 1.
Fig. 4 realizes second embodiments of the ONU of support different wave length under same ODN for the present invention Network architecture schematic diagram, as shown in figure 4, OLT, which is 2 wavelength speed, realizes 50Gbps, ONU1 It is that Single wavelength speed realizes that 25Gbps, ONU3 are that 2 wavelength speed realize 50Gbps with ONU2, Under this mode, OLT supports 2 wavelength, and supports ONUs of the ONU of 2 wavelength with supporting Single wavelength Coexist.Wherein, Single wavelength ONU wavelength is fixed as λ0, 2 wavelength ONU wavelength is fixed as λ0 And λ1.Now, the port number that ONU1 and 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 to λ0And λ1。
Fig. 5 realizes 3rd embodiments of the ONU of support different wave length under same ODN for the present invention Network architecture schematic diagram, as shown in figure 5, OLT, which is 4 wavelength speed, realizes 100Gbps, ONU1 It is that Single wavelength speed realizes that 25Gbps, ONU2 are that 2 wavelength speed realize that 50Gbps, ONU3 are 4 ripples Long speed realizes 100Gbps, in this manner, OLT 4 wavelength of support, and the ONU of 4 wavelength of support, The ONU of Single wavelength is supported, and supports the ONU of 2 wavelength to coexist.Wherein, Single wavelength ONU Wavelength is fixed as λ0, 2 wavelength ONU wavelength is fixed to λ0And λ1, 4 wavelength ONU ripple Length is fixed to λ0、λ1、λ2And λ3.Now, the port number that ONU1 is supported all is 1 and wavelength It is fixed as λ0；The port number that ONU2 is supported all is 2 and wavelength is fixed to λ0And λ1；ONU3 The port number of support is all 4 and wavelength is fixed to λ0、λ1、λ2And λ3。
It should be noted that Fig. 3~Fig. 5 is only exemplified by coexisting three ONU under same ODN, still The protection domain being not intended to limit the present invention, is merely illustrative.
That is, PON frameworks of the present invention at least include：Support the OLT of multichannel, support it is a kind of or One or more ONU being located under same ODN of more than one passages, wherein,
OLT/ONU, obtains port number and/or corresponding passage that transmission data are supported, it would be desirable to transmit Data evenly distribute in respective channel transmit, transmit and pre-set on other passages of same time Data or do not transmit data；
ONU/OLT, receives data on the channel wave that itself is supported, and regular according to sending as needed Correspondingly the data received are re-assemblied.
It should be noted that the port number in the invention described above PON frameworks, can be equal to number of wavelengths, The number of wavelengths included in fiber count or a plurality of optical fiber can be equal to.
For down direction：
OLT, for obtaining the passage that the purpose ONU and purpose ONU of the data for needing to transmit are supported Number and/or corresponding passage；Will according to the purpose ONU of acquisition port number and the port number itself supported Need the data of transmission to evenly distribute to transmit in respective channel, transmitted on other passages of same time The data that pre-set do not transmit data.Here, corresponding passage refers to：OLT and purpose ONU The passage all supported, and other passages refer to：It is logical in addition to corresponding passage in the passage that OLT is supported Road.
Purpose ONU, for receiving data on the passage that itself is supported, and is advised according to transmission as needed Then correspondingly the data received are re-assemblied.
Wherein,
OLT specifically for：Obtain purpose ONU and purpose the ONU support for the data for needing to transmit Port number；For each purpose ONU, the data for needing to transmit are equally divided into j parts, will be each Number is corresponding on transmission, remaining (i-j) individual passage according to being separately dispensed on each passage of purpose ONU supports The data that pre-set of time tranfer or do not transmit data；Wherein, i is the port number that OLT is supported, i For the positive integer more than or equal to 1；J is the port number that ONU is supported, j is just whole more than or equal to 1 Count and j is less than or equal to i.
Further, OLT is additionally operable to：Data to be sent or data fragmentation on each passage are packaged into The purpose ONU is transferred to after data frame.
Correspondingly, purpose ONU specifically for：Support the purpose ONU of j wavelength at 0~passage of passage (j-1) Upper reception data frame.
Purpose ONU is additionally operable to：Channel information and/or address information in data frame and local logical Road information and/or address information receive data and/or data fragmentation, and data are carried out to the data fragmentation received Restructuring.
Wherein, the data pre-set be idle idle data, and/or need transmit data repetition, And/or other data pre-set.
For up direction：
OLT is additionally operable to distribute upstream bandwidth for ONU：Purpose ONU for supporting j passages, logical Identical bandwidth, passage j, passage (j+1) ... and passage (i-1) corresponding positions are distributed on 0~passage of road (j-1) respectively The bandwidth put is not distributed.
So, purpose ONU is additionally operable to：The upstream bandwidth that OLT is distributed on each passage is obtained, by number Sent according to being uniformly distributed in each upstream bandwidth, do not obtain and do not sent on the wavelength of bandwidth allocation at other Data.
OLT is additionally operable to receive data frame on the passage of itself support, according to the passage in the data frame Information and/or address information and local channel information and/or address information receive data and/or data point Piece, and data recombination is carried out in the data fragmentation that identical time slot is sent to the same ONU that receives；
And/or, data frame is received on the passage that itself is supported, according to the bandwidth that itself is distributed to ONU, The data fragmentation progress data recombination sent to the same ONU received in identical time slot.
Hereafter for convenience, it is described so that port number is equal to number of wavelengths as an example, but is not used to limit Protection scope of the present invention.
Based on PON frameworks of the present invention, realizing the method for data transfer includes：
For OLT sides, before the data (data) for needing to transmit enter enqueue (Queue),
First, acquisition data sends purpose ONU extremely, and the number of wavelengths that purpose ONU is supported；This In, in the data that operation layer is submitted sends request, data, the data for carrying transmission in need are sent Wavelength information and/or purpose ONU information etc., OLT can send request according to data and extract purpose ONU and its number of wavelengths of support.It should be noted that the transmission of data typically has queue management, team Row management can be the module or a virtual module of a reality, such as with other modules Combine, data can first be placed into queue, allow rear transmitter to obtain data from queue and be transmitted.
Then, the number of wavelengths according still further to the purpose ONU of acquisition evenly distributes the data for needing to transmit in phase Answer and transmitted on wavelength.
Wherein, the data for needing to transmit are evenly distributed corresponding according to the purpose ONU of acquisition number of wavelengths Transmission is specifically included on wavelength：
Assuming that OLT supports i wavelength, ONU supports j wavelength, wherein, i is more than or equal to 1 Positive integer, j for more than or equal to 1 positive integer and j be less than or equal to i.So, for each ONU, The data for needing to transmit are equally divided into j parts, by each number according to each ripple for being separately dispensed into ONU supports Transmitted in length, and for remaining (i-j) individual wavelength, then transmit the data pre-set or do not transmit data.
So, the data to be sent on each wavelength of correspondence or data fragmentation can be packaged into number by ONU According to being transferred to purpose ONU after frame.
Wherein, the data pre-set can be idle (idle) data, and/or need the data of transmission Repetition, and/or other data pre-set be such as sent to purpose ONU other data, Huo Zhefa Give other ONU data, etc..
Wherein, in up direction, because OLT to the ONU bandwidth distributed has determined that ONU exists Data are sent on which wavelength, therefore, it can to transmit default data on other wavelength i.e. directly Connect and do not transmit data.
Wherein,
Each number evidence is separately dispensed into uniform transmission bag on the corresponding wavelength of each wavelength of ONU supports Include：Transmitted on each wavelength that each number is supported according to being respectively put into queue and evenly distributing in ONU.
Data transfer, which is described, to be realized to PON frameworks of the present invention with reference to Fig. 5 citings as follows, such as schemed Shown in 5, it is assumed that OLT supports 4 wavelength, ONU1 supports Single wavelength, and ONU2 supports 2 wavelength, ONU3 Support 4 wavelength.
Fig. 6 evenly distributes the schematic diagram of the embodiment of data for the present invention according to number of wavelengths, with reference to Fig. 5, It is the ONU such as ONU1 that number of wavelengths is 1 for number of wavelengths, it would be desirable to which the data of transmission is entirely put into team Row 0 (queue0)；And be put into other three queue are queue1, queue2 and queue3 same The idle data of sample size；
To the ONU such as ONU2 that number of wavelengths is 2, it would be desirable to which the data of transmission is uniformly such as divided into two Part, queue0 and queue1 are respectively put into, such as：Odd bytes can be put into queue0, even number word Section is put into queue1；And it is respectively put into the idle data of 1/2data sizes in queue2 and queue3；
For the ONU such as ONU3 that number of wavelengths is 4, it would be desirable to which the data of transmission is uniformly such as divided into 4 Part, queue0, queue1, queue2 and queue3 are respectively put into, such as：1st byte be put into queue0, 2nd byte, which is put into queue1, the 3rd byte and is put into queue2, the 4th byte, is put into queue3, then, 5th byte, which is put into queue0, the 6th byte and is put into queue1, the 7th byte, is put into queue2, the 8th word Section is put into queue3, and the rest may be inferred.
The signal for the first embodiment that Fig. 7 transmits for the ITU-T data downstreams based on PON frameworks of the present invention Figure, the signal for the first embodiment that Fig. 8 transmits for the IEEE data downstreams based on PON frameworks of the present invention Figure, the framework with reference to shown in Fig. 5, such as：If ONU supports Single wavelength, as shown in Figure 7, Figure 8, The data1 for needing transmission is exactly the transmission in the case where ONU supports Single wavelength, and whole data1 is (attached It is abbreviated as 1) being placed on queue0 and in corresponding wavelength X in figure0Upper transmission, and other queues be queue1, An equal amount of idle data are put into queue2 and queue3 same position；For another example：If ONU 2 wavelength are supported, as shown in Figure 7, Figure 8, it is necessary to which the data2 (2 are abbreviated as in accompanying drawing) of transmission is exactly Transmission in the case where ONU supports 2 wavelength, data2 is equally divided into data2-1 and (write a Chinese character in simplified form in accompanying drawing For 2-1) and data2-2 (2-2 is abbreviated as in accompanying drawing), wherein, data2-1 is placed on queue0 and right The wavelength X answered0Upper transmission, data2-2 is placed on queue1 and in corresponding wavelength X1Upper transmission, and other Queue is that an equal amount of idle data are put into queue2 and queue3 same position；And for example：If ONU supports 4 wavelength, as shown in Figure 7, Figure 8, it is necessary to which the data3 of transmission is exactly to support 4 in ONU Transmission in the case of wavelength, data3 (3 are abbreviated as in accompanying drawing) is equally divided into data3-1 (in accompanying drawing Be abbreviated as 3-1), data3-2 (3-2 is abbreviated as in accompanying drawing), data3-3 (3-3 is abbreviated as in accompanying drawing) With data3-4 (3-4 is abbreviated as in accompanying drawing), wherein, data3-1 is placed on queue0 and in corresponding wavelength λ0Upper transmission, data3-2 is placed on queue1 and in corresponding wavelength X1Upper transmission, data3-3 is placed on queue2 And in corresponding wavelength X2Upper transmission, data3-4 is placed on queue3 and in corresponding wavelength X3Upper transmission.
In another embodiment, the idle numbers in first embodiment can be replaced by the data for needing to send, Repeat to send the data for needing to send i.e. on the wavelength do not supported.Specifically, with reference to Fig. 5, For the ONU such as ONU1 that number of wavelengths is 1, it would be desirable to which the data of transmission is entirely put into queue0, and The data for needing to transmit is also placed in other three queue are queue1, queue2 and queue3；
For the ONU such as ONU2 that number of wavelengths is 2, it would be desirable to which the data of transmission is uniformly such as divided into Two parts, queue0 and queue1 are respectively put into, such as：Odd bytes can be put into queue0, even number Byte is put into queue1；And be divided into two parts of data transmitted will be needed to be respectively put into again Queue2 and queue3；
For the ONU such as ONU3 that number of wavelengths is 4, it would be desirable to which the data of transmission is uniformly such as divided into 4 Point, queue0, queue1, queue2 and queue3 are respectively put into, such as：1st byte be put into queue0, 2nd byte, which is put into queue1, the 3rd byte and is put into queue2, the 4th byte, is put into queue3, then, 5th byte, which is put into queue0, the 6th byte and is put into queue1, the 7th byte, is put into queue2, the 8th word Section is put into queue3, and the rest may be inferred.
The signal for the second embodiment that Fig. 9 transmits for the ITU-T data downstreams based on PON frameworks of the present invention Figure, the signal for the second embodiment that Figure 10 transmits for the IEEE data downstreams based on PON frameworks of the present invention Figure, the framework with reference to shown in Fig. 5, such as：If ONU supports Single wavelength, such as Fig. 9, Tu10Suo Show, it is necessary to which the data1 transmitted is exactly the transmission in the case where ONU supports Single wavelength, whole data1 (1 is abbreviated as in accompanying drawing) is placed on queue0 and in corresponding wavelength X0Upper transmission, and other queues are An equal amount of whole data1 is put into queue1, queue2 and queue3 same position；For another example： If ONU supports 2 wavelength, as shown in Figure 9, Figure 10, it is necessary to which the data2 of transmission (writes a Chinese character in simplified form in accompanying drawing 2) to be exactly the transmission in the case where ONU supports 2 wavelength, it is (attached that data2 is equally divided into data2-1 2-1 is abbreviated as in figure) and data2-2 (2-2 is abbreviated as in accompanying 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 other queues are to be respectively put into data2-1 and data2-2 again in queue2 and queue3 same position； And for example：If ONU support 4 wavelength, as shown in Figure 9, Figure 10, it is necessary to transmission data3 be exactly ONU supports the transmission in the case of 4 wavelength, and data3 (3 are abbreviated as in accompanying drawing) is equally divided into data3-1 (3-1 is abbreviated as in accompanying drawing), data3-2 (3-2 is abbreviated as in accompanying drawing), data3-3 (write a Chinese character in simplified form in accompanying drawing For 3-3) and data3-4 (3-4 is abbreviated as in accompanying drawing), wherein, data3-1 is placed on queue0 and right The wavelength X answered0Upper transmission, data3-2 is placed on queue1 and in corresponding wavelength X1Upper transmission, data3-3 It is placed on queue2 and in corresponding wavelength X2Upper transmission, data3-4 is placed on queue3 and in corresponding wavelength λ3Upper transmission.
In 3rd embodiment, the idle numbers in first embodiment can also be replaced by others and pre-set Data, i.e., for example other ONU of the data pre-set are sent on the wavelength that target ONU is not supported and are connect The data of receipts.Specifically,, will for the ONU such as ONU1 that number of wavelengths is 1 with reference to Fig. 5 The data of transmission is needed entirely to be put into queue0；And it is possible to which the data1 ' pre-set is entirely put into Queue1, wherein, data1 ' is intended for the data of other ONU beyond target ONU, and other two Queue is to be put into idle data in queue2 and queue3；
To the ONU such as ONU2 that number of wavelengths is 2, it would be desirable to which the data of transmission is uniformly such as divided into two Part, queue0 and queue1 are respectively put into, such as：Odd bytes can be put into queue0, even number word Section is put into queue1；And it is respectively put into the idle data of 1/2data sizes in queue2 and queue3；
For the ONU such as ONU3 that number of wavelengths is 4, it would be desirable to which the data of transmission is uniformly such as divided into 4 Point, queue0, queue1, queue2 and queue3 are respectively put into, such as：1st byte be put into queue0, 2nd byte, which is put into queue1, the 3rd byte and is put into queue2, the 4th byte, is put into queue3, then, 5th byte, which is put into queue0, the 6th byte and is put into queue1, the 7th byte, is put into queue2, the 8th word Section is put into queue3, and the rest may be inferred.
Figure 11 shows for the 3rd embodiment of the ITU-T data downstreams transmission based on PON frameworks of the present invention It is intended to, Figure 12 shows for the 3rd embodiment of the IEEE data downstreams transmission based on PON frameworks of the present invention It is intended to, the framework with reference to shown in Fig. 5, such as：If ONU supports Single wavelength, such as Figure 11, Figure 12 It is shown, it is necessary to transmission data1 be exactly ONU support Single wavelength in the case of transmission, whole data1 (1 is abbreviated as in accompanying drawing) is placed on queue0 and in corresponding wavelength X0Upper transmission, in queue1 phase With being put into an equal amount of data1 ' pre-set on position and in corresponding wavelength X1Upper transmission, wherein, Data1 ' is intended for the data of other ONU beyond target ONU, and other queues be queue2 and An equal amount of idle data are put into queue3 same position；For another example：If ONU supports 2 wavelength, , it is necessary to which the data2 (2 are abbreviated as in accompanying drawing) of transmission is exactly to be supported in ONU as shown in Figure 11, Figure 12 Transmission in the case of 2 wavelength, data2 is equally divided into data2-1 (2-1 is abbreviated as in accompanying drawing) and data2-2 (2-2 is abbreviated as in accompanying 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 other queues be queue2 and An equal amount of idle data are put into queue3 same position；And for example：If ONU supports 4 wavelength, , it is necessary to which the data3 of transmission is in the case where ONU supports 4 wavelength as shown in Figure 11, Figure 12 Transmission, data3 (3 are abbreviated as in accompanying drawing) be equally divided into data3-1 (3-1 is abbreviated as in accompanying drawing), Data3-2 (3-2 is abbreviated as in accompanying drawing), data3-3 (3-3 is abbreviated as in accompanying drawing) and data3-4 (accompanying drawings In be abbreviated as 3-4), wherein, data3-1 is placed on queue0 and in corresponding wavelength X0Upper transmission, data3-2 It is placed on queue1 and in corresponding wavelength X1Upper transmission, data3-3 is placed on queue2 and in corresponding wavelength λ2Upper transmission, data3-4 is placed on queue3 and in corresponding wavelength X3Upper transmission.
It should be noted that in Figure 12, can also be without frame between several idle for sending during idle Head (H, Header), and it is embodied in continuous idle.
Next-generation passive optical network (NG-PON2) is an important branch in PON technological evolvements, In NG-PON2, it can be seen from related protocol, the encapsulation process that data are sent is generally comprised：Data PON method for packing of new generation (XGEM, XG-PON Encapsulation Method) frame is first encapsulated into, XGEM frames include carrying XGEM port-marks (Port ID) in expense and payload, expense；It is multiple XGEM frames are encapsulated into superframe again, and superframe includes expense and payload, and expense includes physical layer OAM (PLOAM, Physical Layer OAM) message, transmission bandwidth mapping (BWmap) bandwidth allocation Deng；Superframe is encapsulated in progress physical layer frame (PHY Frame) again after being handled by FEC etc., physical frame Including frame head and payload, frame head is used for the original position that recipient detects physical frame.In addition, EPON/10GEPON is another important branch of PON evolution, it can be seen from related protocol, data The encapsulation process of transmission is generally comprised：Data are first encapsulated into medium access control (MAC, Media Access Control) frame, mac frame includes expense and payload, and multiple mac frames are encapsulated into physical frame again, Physical frame includes expense and payload frame head and payload.
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 is identical, what encapsulation was completed XGEM frames or mac frame size are also identical.
In the present invention, physical layer frame (PHY Frame) size completed on j wavelength is identical, is The data transmitted on guarantee each wavelength do not misplace, further, in addition to：
For NG-PON2, in framing sublayer (FS, Framing Sublayer) framing, insert identical Physical layer OAM (PLOAM, Physical Layer OAM) message count and the transmission bandwidth mapping of quantity (BWmap) entry number；Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all wavelengths Part, i.e., PLOAM message and BWmap entries on each wavelength include issuing all wavelengths PLOAM message and BWmap entries；Or,
The ONU for supporting j wavelength PLOAM message and BWmap are issued only in λ0、λ1、λ2… λjIt is upper to send.
From the ITU-T downlink data transmission schematic diagrames shown in Fig. 7, Fig. 9 and Figure 11,4 queue The size of the corresponding outgoing data of middle same position is identical；The transmission data that 4 queues are taken out every time Size is identical, and the XGEM frame signs that encapsulation is completed are also identical；
Physical layer frame (PHY Frame) size completed on 4 wavelength is identical, each in order to ensure The data transmitted on wavelength do not misplace, further, in addition to：
In FS framing, the PLOAM message counts and BWmap entry numbers of identical quantity are inserted；Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all wavelengths Part；Or,
The ONU for supporting j wavelength PLOAM message and BWmap are sent to only in λ0、λ1、λ2 And λjIt is upper to send.Such as：It is sent to the ONU for supporting 2 wavelength PLOAM message and BWmap Only in λ0And λ1It is upper to send, it is sent to the PLOAM message and BWmap for the ONU for supporting 4 wavelength In λ0、λ1、λ2And λ3It is upper to send.
Further, OLT be sent to ONU downlink data can be discontinuous, sent out in the way of burst Send data such as in IEEE Ethernet passive optical networks (EPON) system, specifically can be The mode of management information similar PLOAM/BWmap is to pass through the multiparty control as in IEEE EPON Agreement (MPCP, Multi-Point Control Protocal) is realized and sent, and MPCP, which can work as, to count According to transmission, i.e., uniformly such as it is evenly distributed on each wavelength and is sent according to number of wavelengths.Certainly, MPCP It can be sent on the wavelength that each ONU is supported, and idle data or not is sent on other wavelength Data are sent, such as, because each ONU can be in λ0Upper to receive, therefore, MPCP can also It is fixed on λ0It is upper to send, λ1、λ2And λ3Idle data or not was sent on the position of upper corresponding time Send data.In addition, MPCP can also send portion on each wavelength.
Further, it is assumed that OLT supports i wavelength, and for ONU sides, the present invention realizes data transfer Method also include：
Support the ONU of j wavelength in λ0~λ(j-1)Upper reception data frame, and according in the data frame received Data frame is received with local wavelength information and/or address information；Mutually tackled according to the sending method of OLT sides The data frame decapsulation received, data recombination is carried out to data fragmentation.Now, if in some wavelength On receive idle frames, and/or repeat data frames, then directly discarding.
Assuming that OLT supports i wavelength, if ONU needs to send upstream data, then, the present invention Realizing the method for data transfer also includes：
When OLT distributes bandwidth, the ONU for supporting j wavelength, in λ0~λ(j-1)It is upper to distribute identical respectively Bandwidth, and λj、λ(j+1)... and λ(i-1)The bandwidth of relevant 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 frameworks of the present invention, supports unicast Long ONU is in wavelength X0On distribute to data frame sent in the bandwidth of oneself, in λ1、λ2、λ3On The position of corresponding time does not send data, OLT according in the data frame received with local wavelength information And/or address information receives data frame, the bandwidth reception data frame that can also be distributed according to OLT to ONU；
Support the ONU of 2 wavelength in λ0And λ1On distribute to data frame sent in the bandwidth of oneself, in λ2、λ3The position of upper corresponding time do not send data, and OLT is according in the data frame received and locally Wavelength information and/or address information receive data frame, can also be connect according to OLT to the ONU bandwidth distributed Receive data frame；Data recombination is carried out to the data fragmentation received according to the sending method of ONU sides.
Support the ONU of 4 wavelength in λ0、λ1、λ2And λ3On distribute to number sent in the bandwidth of oneself According to frame, OLT is according in the data frame received and local wavelength information and/or address information receive data Frame, the bandwidth reception data frame that can also be distributed according to OLT to ONU；According to the transmission of ONU sides Mode carries out data recombination to the data fragmentation received.
Still by taking Fig. 5 as an example, such as：ONU1 for supporting Single wavelength, in λ0Upper distribution bandwidth, and In λ1、λ2And λ3The bandwidth of relevant position is not distributed then；Correspondingly, ONU is only in λ0Upper distribution Data, λ are sent in bandwidth1、λ2And λ3On also without idle data；
For another example：ONU2 for supporting 2 wavelength, in λ0And λ1Upper give distributes same band, and λ2And λ3The bandwidth of relevant position is not distributed；Correspondingly, ONU is only in λ0And λ1The bandwidth of upper distribution Interior transmission data, λ2And λ3On also without idle data；
And for example：ONU3 for supporting 4 wavelength, in λ0、λ1、λ2And λ3Upper distribution same band； Correspondingly, support the ONU of 4 wavelength in λ0、λ1、λ2And λ3Data are sent in the bandwidth of upper distribution.
Figure 14 is the composition structural representation of the first embodiment of optical network device of the present invention, such as Figure 14 institutes Show, at least including the first acquisition module, first processing module；Wherein,
First acquisition module, for obtaining port number and/or corresponding passage that transmission data are supported；
First processing module, is transmitted for the data for needing to transmit to be evenly distributed in respective channel, The data pre-set are transmitted on other channel waves of same time or data are not transmitted.
Wherein,
First acquisition module specifically for：Obtain the purpose ONU and purpose for the data for needing to transmit The port number that ONU is supported；Correspondingly,
First processing module specifically for：
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
First processing module is additionally operable to：Data to be sent or data fragmentation on each passage are packaged into number According to being transferred to purpose ONU after frame.
Wherein, the data pre-set can be idle (idle) data, and/or need the data of transmission Repetition, and/or other data pre-set etc..
Wherein,
Every portion, which is separately dispensed into, to transmit on each wavelength of ONU supports includes：Each number evidence is put into Distribute in respective queue and respectively on each wavelength supported in ONU and transmit.
Further,
The size of the corresponding outgoing data of same position is identical in j passage.
The transmission size of data that j passage takes out every time is identical, encapsulate complete XGEM frames or Mac frame size is also identical.
The PHY Frame sizes completed on j passage are identicals, in order to ensure to be transmitted on each wavelength Data do not misplace, further, in addition to：
In FS framing, the PLOAM message counts and transmission BWmap entry numbers of identical quantity are inserted； Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all passages Part, i.e., PLOAM message and BWmap entries on each wavelength include issuing all wavelengths PLOAM message and BWmap entries；Or,
Be sent to support j passages ONU PLOAM message and BWmap passage 0, passage 1, Passage 2 ... passage j (is exactly λ here when port number is equal to number of wavelengths0、λ1、λ2And λj) on send out Send.
Further, first processing module is additionally operable to：When distributing upstream bandwidth for ONU, for supporting institute The ONU of j passages is stated, identical bandwidth is distributed respectively on 0~passage of passage (j-1), and it is passage j, logical The bandwidth of road (j+1) ... and passage (i-1) relevant position is not distributed.
Also include receiving module, for receiving data frame on the passage that itself OLT is supported, according to Channel information and/or address information and local channel information and/or address information in the data frame connect Receive data and/or data fragmentation, and to data fragmentation that the same ONU received is sent in identical time slot Carry out data recombination；
And/or, data frame is received on the passage that itself OLT is supported, the ONU is given according to itself The bandwidth of distribution, the data fragmentation progress data weight sent to the same ONU received in identical time slot Group.
Optical network device shown in Figure 14 can be set in the olt or independent community.
Figure 15 is the composition structural representation of the second embodiment of optical network device of the present invention, such as Figure 15 institutes Show, at least include, the second acquisition module, Second processing module；Wherein,
Second acquisition module, for receiving data frame on 0~passage of passage (j-1)；
Second processing module, for according to the channel information and/or address information in the data frame that receives and Channel information local ONU and/or address information receive data and/or data fragmentation, to the number received Data recombination is carried out according to burst；
Wherein, j be ONU support port number, j for more than or equal to 1 positive integer and j be less than or Equal to i, i is the port number that OLT is supported.
Second acquisition module is additionally operable to：Obtain the upstream bandwidth that OLT is distributed on each passage；
Second processing module is additionally operable to：Data are uniformly distributed in each upstream bandwidth and sent, at other Data are not sent on the wavelength for not obtaining bandwidth allocation；
Wherein, distribution upstream bandwidth includes：Purpose ONU for supporting j passages, in 0~passage of passage (j-1) bandwidth of identical bandwidth, passage j, passage (j+1) ... and passage (i-1) relevant position is distributed on respectively Do not distribute.
Device described in Figure 15 can be arranged in ONU or independent community；
It is pointed out that the data processing of the embodiment of the present invention, data are sent and DRP data reception process In, the size for the data block being related to, size of data frame etc. are only to list a kind of implementation, right For those skilled in the art, the technical scheme provided according to the present invention makes in other implementations Obtain size, size of data frame of data block etc. and occur what change will be appreciated that and realize, be not used to Limit protection scope of the present invention.
It is described above, it is only the preferred embodiments of the present invention, is not intended to limit the protection model of the present invention Enclose.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., It should be included in the scope of the protection.

Claims (32)

1. a kind of passive optical network PON framework, it is characterised in that including：Support the light of multichannel Road terminal OLT, and support being located under same optical distribution network ODN of one or more kinds of passages One or more optical network unit ONUs；Wherein,
OLT/ONU, for obtaining port number and/or corresponding passage that transmission data are supported, it would be desirable to The data of transmission are evenly distributed to be transmitted in respective channel, is transmitted on other passages of same time advance The data of setting do not transmit data；
ONU/OLT, for receiving data on the passage that itself is supported, and is advised according to transmission as needed Then correspondingly the data received are re-assemblied.
2. PON frameworks according to claim 1, it is characterised in that the OLT is used for：Obtain The port number for taking the purpose ONU and purpose ONU of the data for needing to transmit to support；
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
3. PON frameworks according to claim 2, it is characterised in that the OLT is additionally operable to： Data to be sent or data fragmentation on each passage are packaged into after data frame and are transferred to the purpose ONU。
4. PON frameworks according to claim 2, it is characterised in that the number pre-set According to the data for being idle idle data, and/or needs transmission repetition, and/or other pre-set Data.
5. PON frameworks according to claim 3, it is characterised in that the purpose ONU is used for： The purpose ONU of j wavelength is supported to receive the data frame on 0~passage of passage (j-1).
6. PON frameworks according to claim 5, it is characterised in that the purpose ONU is also used In：Channel information and/or address information and local channel information and/or address in the data frame Information receives data and/or data fragmentation, and data recombination is carried out to the data fragmentation received.
7. PON frameworks according to claim 1, it is characterised in that the OLT be additionally operable to for ONU distributes upstream bandwidth：Purpose ONU for supporting j passages, on 0~passage of passage (j-1) respectively Identical bandwidth is distributed, passage j, passage (j+1) ... and the bandwidth of passage (i-1) relevant position are not distributed；
Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
8. PON frameworks according to claim 7, it is characterised in that the ONU is additionally operable to： The upstream bandwidth that OLT is distributed on each passage is obtained, data are uniformly distributed in each upstream bandwidth and sent out Send, do not obtained at other and do not send data on wavelength of bandwidth allocation.
9. PON frameworks according to claim 7, it is characterised in that the OLT is additionally operable to： Data frame is received on the passage that itself is supported, channel information and/or address letter in the data frame Breath and local channel information and/or address information receive data and/or data fragmentation, and same to what is received One ONU carries out data recombination in the data fragmentation that identical time slot is sent；
And/or, data frame is received on the passage that itself is supported, is distributed according to itself to the ONU Bandwidth, the data fragmentation progress data recombination sent to the same ONU received in identical time slot.
10. a kind of method that PON frameworks realize data transfer, it is characterised in that including：
OLT/ONU obtains the port number and/or corresponding passage that transmission data are supported, it would be desirable to transmit Data evenly distribute in respective channel transmit, transmit and set in advance on other channel waves of same time The data put do not transmit data；
Wherein, OLT supports multichannel；ONU supports one or more kinds of passages and positioned at same ODN Under.
11. method according to claim 10, it is characterised in that the OLT obtains transmission number According to the port number and/or corresponding passage supported, it would be desirable to which the data of transmission are evenly distributed in respective channel Upper transmission includes：
Obtain the port number that the purpose ONU and purpose ONU of the data for needing to transmit are supported；
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
12. method according to claim 11, it is characterised in that this method also includes：It is described Data to be sent or data fragmentation on each passage are packaged into after data frame and are transferred to the purpose by OLT ONU。
13. method according to claim 11, it is characterised in that the data that pre-set are The repetition of idle idle data, and/or the data of needs transmission, and/or other data pre-set.
14. method according to claim 11, it is characterised in that phase in the j passages With position, the size of corresponding outgoing data is identical.
15. method according to claim 12, it is characterised in that the j passages are each The transmission size of data of taking-up is identical, the PON method for packing of new generation that the data frame encapsulation is completed XGEM frames or medium access control mac frame size are identicals；
The physical layer frame PHY Frame sizes of the data frame completed on the j passage are identicals.
16. method according to claim 15, it is characterised in that in framing of the data frame During layer FS framing, physical layer OAM PLOAM message counts and the transmission bandwidth mapping of identical quantity are inserted BWmap entry numbers；Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all passages Part；Or,
Be sent to the ONU for supporting the j passages PLOAM message and BWmap only passage 0, Sent on passage 1, passage 2 ... wavelength j.
17. method according to claim 10, it is characterised in that this method also includes：
When the OLT is that ONU distributes upstream bandwidth, the ONU for supporting j passages, logical Identical bandwidth, passage j, passage (j+1) ... and passage (i-1) corresponding positions are distributed on 0~passage of road (j-1) respectively The bandwidth put is not distributed；
Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
18. PON frameworks according to claim 10, it is characterised in that this method also includes：
The OLT receives data frame on the passage that itself is supported, the passage letter in the data frame Breath and/or address information and local channel information and/or address information 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 that receives；
And/or, data frame is received on the passage that itself is supported, according to the bandwidth that itself is distributed to ONU, The data fragmentation progress data recombination sent to the same ONU received in identical time slot.
19. a kind of method that PON frameworks realize data transfer, it is characterised in that including：J is supported to lead to The ONU in road receives data frame on 0~passage of passage (j-1)；
The local passage letter of channel information and/or address information and ONU in the data frame received Breath and/or address information receive data and/or data fragmentation, and data weight is carried out to the data fragmentation received Group；
Wherein, j be ONU support port number, j for more than or equal to 1 positive integer and j be less than or Equal to i, i is the port number that OLT is supported.
20. method according to claim 19, it is characterised in that this method also includes：
The ONU obtains the upstream bandwidth that OLT is distributed on each passage；
Data are uniformly distributed in each upstream bandwidth and sent, the wavelength for not obtaining bandwidth allocation at other On do not send data；
Wherein, distribution upstream bandwidth includes：Purpose ONU for supporting j passages, in 0~passage of passage (j-1) bandwidth of identical bandwidth, passage j, passage (j+1) ... and passage (i-1) relevant position is distributed on respectively Do not distribute.
21. a kind of optical network device, it is characterised in that including the first acquisition module, first processing module； Wherein,
First acquisition module, for obtaining port number and/or corresponding passage that transmission data are supported；
First processing module, is transmitted for the data for needing to transmit to be evenly distributed in respective channel, The data pre-set are transmitted on other channel waves of same time or data are not transmitted.
22. optical network device according to claim 21, it is characterised in that described first obtains mould Block specifically for：Obtain the port number that the purpose ONU and purpose ONU of the data for needing to transmit are supported；
The first processing module specifically for：
For each purpose ONU, the data for needing to transmit are equally divided into j parts, by each number Transmitted according to being separately dispensed on each passage of purpose ONU supports, when corresponding on remaining (i-j) individual passage Between transmit the data pre-set 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 ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
23. optical network device according to claim 22, it is characterised in that the first processing mould Block is additionally operable to：Data to be sent or data fragmentation on each passage are packaged into after data frame and are transferred to institute State purpose ONU.
24. optical network device according to claim 22, it is characterised in that described to pre-set Data are the repetitions of idle idle data, and/or the data of needs transmission, and/or other pre-set Data.
25. optical network apparatus according to claim 22, it is characterised in that the j are described logical The size of the corresponding outgoing data of same position is identical in road.
26. optical network device according to claim 23, it is characterised in that the j are described logical The transmission size of data that road takes out every time is identical, XGEM frames that data frame encapsulation is completed or Mac frame size is identical；
The physical layer frame PHY Frame sizes of the data frame completed on the j passage are identicals.
27. optical network device according to claim 26, it is characterised in that in the data frame During FS framing, physical layer OAM PLOAM message counts and the transmission bandwidth mapping of identical quantity are inserted BWmap entry numbers；Or,
The PLOAM message and BWmap entries for being sent to all ONU all copy one on all passages Part；Or,
The ONU for supporting the j passages PLOAM message and BWmap are sent in passage 0, logical Sent on road 1, passage 2 ... passage j.
28. optical network device according to claim 21, it is characterised in that the first processing mould Block is additionally operable to distribute upstream bandwidth for ONU, the ONU for supporting the j passages, in passage 0~logical Distribute identical bandwidth on road (j-1) respectively, and passage j, passage (j+1) ... and passage (i-1) relevant position Bandwidth is not distributed；
Wherein, i is the port number that OLT is supported, i is the positive integer more than or equal to 1；J is ONU branch The port number held, j is less than or equal to i for the positive integer and j more than or equal to 1.
29. optical network device according to claim 28, it is characterised in that also including receiving module, For receiving data frame on the passage that itself OLT is supported, the passage letter in the data frame Breath and/or address information and local channel information and/or address information 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 that receives；
And/or, data frame is received on the passage that itself OLT is supported, the ONU is given according to itself The bandwidth of distribution, the data fragmentation progress data weight sent to the same ONU received in identical time slot Group.
30. the optical network device according to claim 21,28 or 29, it is characterised in that described Optical network device is set in the olt, or is independent community.
31. a kind of optical network device, it is characterised in that including：Second acquisition module, second processing mould Block；Wherein,
Second acquisition module, for receiving data frame on 0~passage of passage (j-1)；
Second processing module, for according to the channel information and/or address information in the data frame that receives and Channel information local ONU and/or address information receive data and/or data fragmentation, to the number received Data recombination is carried out according to burst；
Wherein, j be ONU support port number, j for more than or equal to 1 positive integer and j be less than or Equal to i, i is the port number that OLT is supported.
32. optical network device according to claim 31, it is characterised in that described second obtains mould Block is additionally operable to：Obtain the upstream bandwidth that OLT is distributed on each passage；
The Second processing module is additionally operable to：Data are uniformly distributed in each upstream bandwidth and sent, Other do not obtain and do not send data on the wavelength of bandwidth allocation；
Wherein, distribution upstream bandwidth includes：Purpose ONU for supporting j passages, in 0~passage of passage (j-1) bandwidth of identical bandwidth, passage j, passage (j+1) ... and passage (i-1) relevant position is distributed on respectively Do not distribute.
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107370688A (en) * 2016-05-12 2017-11-21 中兴通讯股份有限公司 Data transmission method and device
CN109067465A (en) * 2018-09-25 2018-12-21 南京中兴软件有限责任公司 Optical network system, OLT, method for transmitting signals and readable storage medium storing program for executing
WO2019109252A1 (en) * 2017-12-05 2019-06-13 华为技术有限公司 Method for transmitting and receiving data in pon system, network device, and system
WO2020048419A1 (en) * 2018-09-05 2020-03-12 中兴通讯股份有限公司 Optical network multi-rate data exchange method, network device and storage medium
CN112866308A (en) * 2019-11-12 2021-05-28 华为技术有限公司 Data reorganization method and device
CN117639936A (en) * 2023-12-12 2024-03-01 广西电网有限责任公司贵港供电局 Transmission method and device based on IP optical fiber communication
US12034654B2 (en) 2019-11-12 2024-07-09 Huawei Technologies Co., Ltd. Data reassembly method and apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1794697A (en) * 2005-12-23 2006-06-28 润欣通信技术(上海)有限公司 Method of group transmission Ethernet passive light notwork upgoing chain circuit data
CN101197637A (en) * 2006-12-08 2008-06-11 日立通讯技术株式会社 Passive optical network system, optical line terminal, and optical network unit
EP2337256A1 (en) * 2009-12-16 2011-06-22 Alcatel Lucent Communications between optical network units of a passive optical network
CN102143407A (en) * 2010-01-29 2011-08-03 华为技术有限公司 Method, system and device for transmitting wavelength division multiplexing passive optical network
CN102710999A (en) * 2012-05-29 2012-10-03 南京邮电大学 Method for transmitting and processing OMCI (ont management and control interface) messages in GPON (gigabit passive optical network)
CN103856836A (en) * 2012-11-29 2014-06-11 中兴通讯股份有限公司 Method for sending user data in passive optical network (PON), method for receiving user data in PON, system for sending and receiving user data in PON, and equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101119163B (en) * 2006-07-31 2011-08-10 华为技术有限公司 WDM-PON method, system and optical line terminal for implementing multicast service
US8744265B2 (en) * 2007-04-27 2014-06-03 Futurewei Technologies, Inc. Passive optical network with partially-tuned lasers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1794697A (en) * 2005-12-23 2006-06-28 润欣通信技术(上海)有限公司 Method of group transmission Ethernet passive light notwork upgoing chain circuit data
CN101197637A (en) * 2006-12-08 2008-06-11 日立通讯技术株式会社 Passive optical network system, optical line terminal, and optical network unit
EP2337256A1 (en) * 2009-12-16 2011-06-22 Alcatel Lucent Communications between optical network units of a passive optical network
CN102143407A (en) * 2010-01-29 2011-08-03 华为技术有限公司 Method, system and device for transmitting wavelength division multiplexing passive optical network
CN102710999A (en) * 2012-05-29 2012-10-03 南京邮电大学 Method for transmitting and processing OMCI (ont management and control interface) messages in GPON (gigabit passive optical network)
CN103856836A (en) * 2012-11-29 2014-06-11 中兴通讯股份有限公司 Method for sending user data in passive optical network (PON), method for receiving user data in PON, system for sending and receiving user data in PON, and equipment

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107370688A (en) * 2016-05-12 2017-11-21 中兴通讯股份有限公司 Data transmission method and device
CN111316575A (en) * 2017-12-05 2020-06-19 华为技术有限公司 Data sending and receiving method in PON system, network equipment and system
WO2019109252A1 (en) * 2017-12-05 2019-06-13 华为技术有限公司 Method for transmitting and receiving data in pon system, network device, and system
CN111316575B (en) * 2017-12-05 2021-06-22 华为技术有限公司 Data sending and receiving method in PON system, network equipment and system
CN110881149B (en) * 2018-09-05 2022-06-07 中兴通讯股份有限公司 Method for coexistence of multi-rate ONU, network device and storage medium
CN110881149A (en) * 2018-09-05 2020-03-13 中兴通讯股份有限公司 Method for coexistence of multi-rate ONU, network device and storage medium
WO2020048419A1 (en) * 2018-09-05 2020-03-12 中兴通讯股份有限公司 Optical network multi-rate data exchange method, network device and storage medium
US11350192B2 (en) 2018-09-05 2022-05-31 Zte Corporation Method for multi-rate data interaction in optical network, network device and non-transitory computer-readable storage medium
CN109067465A (en) * 2018-09-25 2018-12-21 南京中兴软件有限责任公司 Optical network system, OLT, method for transmitting signals and readable storage medium storing program for executing
CN112866308A (en) * 2019-11-12 2021-05-28 华为技术有限公司 Data reorganization method and device
CN112866308B (en) * 2019-11-12 2023-03-10 华为技术有限公司 Data reorganization method and device
US12034654B2 (en) 2019-11-12 2024-07-09 Huawei Technologies Co., Ltd. Data reassembly method and apparatus
CN117639936A (en) * 2023-12-12 2024-03-01 广西电网有限责任公司贵港供电局 Transmission method and device based on IP optical fiber communication
CN117639936B (en) * 2023-12-12 2024-05-24 广西电网有限责任公司贵港供电局 Transmission method and device based on IP optical fiber communication

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