CN107925503A - A kind of data transmission method and optical transmission device - Google Patents
A kind of data transmission method and optical transmission device Download PDFInfo
- Publication number
- CN107925503A CN107925503A CN201580082869.8A CN201580082869A CN107925503A CN 107925503 A CN107925503 A CN 107925503A CN 201580082869 A CN201580082869 A CN 201580082869A CN 107925503 A CN107925503 A CN 107925503A
- Authority
- CN
- China
- Prior art keywords
- carriers
- target sub
- mapped
- wavelet band
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
Abstract
The present invention provides a kind of data transmission method and optical transmission device,Client traffic data can be mapped in target sub-carriers by the data transmission method,Target sub-carriers are mapped on wavelet band by way of frequency division multiplexing,So that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing,During the multiple connection by the wavelet band of the target sub-carriers of low order to high-order,Or,During the target sub-carriers solution multiple connection from from the wavelet band of high-order to low order,Directly the target sub-carriers in corresponding frequency band can be operated or changed,Without the wavelet band of high-order is all carried out solution multiple connection,Each target sub-carriers in the embodiment of the present invention in wavelet band can independently be seen,And independent the target sub-carriers can be operated,The low order container for granule included to high-order container for granule can carry out independent operation and processing.
Description
The present invention relates to the communications field more particularly to a kind of data transmission methods and optical transmission device.
Client traffic moves towards broadband and ultra wide band interface, the interface refers to the interface of home broadband access or the interface of enterprise's broadband access, home broadband 100M is using intelligent acess as major way at present, enterprise broadband uses the optical interface of 1G/10G, and 3G/4G/5G interface uses more than the optical interface of 6G, optical interface gradually becomes the most important access way of customer interface.
OTN (full name in English, Optical Transmission Network: Chinese name, optical transport network) in, client traffic signal processing and transmission are carried out in electrical domain and area of light respectively, in electrical domain, client traffic signal is transformed into electrical domain, it completes to regenerate the 3R of client traffic signal in electrical domain, services of large granularities unit (the ODUK that mapping/demapping is defined to OTN, K=1, 2, 3 ...) in, and the multiplexing completed between low order ODUK to high-order ODCK is decomposed, area of light is sent into later to be transmitted, as shown in Figure 1, multiple connection is mapped in the OTN carried towards broadband IP services, the container for granule for defining different capabilities is mapped, different data container and multi-level multiple connection are constructed for different business particle.Such as it is directed to GE (full name in English, Gigabit Ethernet: Chinese name, gigabit Ethernet), the rate of business be respectively 10GE, 40GE, 100GE service definition different ODUK, different ODUK is mapped in OTU optical wavelength in electrical domain by time domain multiple connection mode.
It can be seen that, the container for granule ODUK of different capabilities is defined in the prior art, by little particle container gradually multiple connection to bulky grain container, when therefore carrying out data processing and exchange for the sub- container for granule in bulky grain container, with regard to needing multi-level multiplexing and demultiplexing, the complexity of electrical chip is increased.Meanwhile bulky grain container maps directly to above the optical wavelength of large capacity, when needing to operate sub- container for granule therein, then needs to carry out photoelectric conversion to the information for completing optical wavelength carrying, introduces additional photoelectricity/electro-optic conversion cost.In the prior art using time domain multiple connection mode, when being operated to sub- container for granule, it needs to carry out time domain demultiplexing to bulky grain container in electrical domain to operate again, the complexity during multiple connection is also increased, and the complete bulky grain container of multiple connection can not be handled little particle container therein.
Summary of the invention
The present invention provides mappings and multiplexing that one kind can simplify customer interface road line interface, mitigate power consumption, the data transmission method and optical transmission device of delay and network cost.
First aspect of the embodiment of the present invention provides a kind of data transmission method, comprising:
Client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；
At least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing；
At least one described wavelet band is emitted into optical-fibre channel.
In conjunction with the embodiment of the present invention in a first aspect, in the first implementation of inventive embodiments first aspect,
Described client traffic data are mapped at least one target sub-carriers include:
In the electrical domain, the client traffic data are mapped at least one described electrical carrier；
Or,
In the area of light, the client traffic data are mapped on the photon carrier wave.
In conjunction with the first implementation of first aspect of the embodiment of the present invention or inventive embodiments first aspect, in second of implementation of first aspect of the embodiment of the present invention,
It is described client traffic data are mapped at least one target sub-carriers before, the method also includes:
Generate at least one described target sub-carriers, wherein mutually orthogonal between at least two target sub-carriers if the wavelet band includes at least two target sub-carriers.
Second aspect of the embodiment of the present invention provides a kind of optical transmission device, comprising:
First map unit, client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；
Second map unit, at least one described target sub-carriers to be mapped at least one wavelet band by way of frequency division multiplexing；
Transmitting unit, for emitting at least one described wavelet band into optical-fibre channel.
In conjunction with second aspect of the embodiment of the present invention, the first implementation of second aspect of the embodiment of the present invention
In,
First map unit is also used to, and in the electrical domain, the client traffic data are mapped at least one described electrical carrier；
Or,
First map unit is also used to, and in the area of light, the client traffic data are mapped on the photon carrier wave.
In conjunction with the first implementation of second aspect of the embodiment of the present invention or second aspect of the embodiment of the present invention, in second of implementation of second aspect of the embodiment of the present invention,
The optical transmission device further include:
Generation unit, for generating at least one described target sub-carriers, wherein mutually orthogonal between the target sub-carriers included by the wavelet band if the wavelet band includes at least two target sub-carriers.
The third aspect of the embodiment of the present invention provides a kind of optical transmission device,
Including processor interconnected and transmitter；
The processor is used for, client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；
The processor is also used to, at least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing；
The transmitter is used for, at least one described wavelet band is emitted into optical-fibre channel.
In conjunction with the third aspect of the embodiment of the present invention, in the first implementation of the third aspect of the embodiment of the present invention,
The processor is also used to, and in the electrical domain, the client traffic data are mapped at least one described electrical carrier；
Or,
The processor is also used to, and in the area of light, the client traffic data are mapped on the photon carrier wave.
In conjunction with the first implementation of the third aspect of the embodiment of the present invention or the third aspect of the embodiment of the present invention,
In second of implementation of the third aspect of the embodiment of the present invention,
The optical transmission device further includes light supply apparatus, the light supply apparatus is for generating at least one described target sub-carriers, and the light supply apparatus is laser light source or more wave sources, wherein, it is mutually orthogonal between the target sub-carriers included by the wavelet band if the wavelet band includes at least two target sub-carriers.
In conjunction with the described in any item optical transmission devices of second of implementation of the third aspect of the embodiment of the present invention to the third aspect of the embodiment of the present invention, in the third implementation of the third aspect of the embodiment of the present invention,
The processor is passive optical filters, is correspondingly arranged at least one described passive optical filters with the wavelet band；
For demultiplexing the wavelet band to the photon carrier wave, the passive optical filters are also used to for the photon carrier wave being mapped to by way of frequency division multiplexing on the wavelet band passive optical filters.
In conjunction with the described in any item optical transmission devices of second of implementation of the third aspect of the embodiment of the present invention to the third aspect of the embodiment of the present invention, in the 4th kind of implementation of the third aspect of the embodiment of the present invention,
The processor is optical modulator and optical detector, is correspondingly arranged at least one described optical modulator and the optical detector with the wavelet band；
The optical detector is used to demultiplex on the wavelet band to the electrical carrier, and the optical modulator is used to the electrical carrier being mapped to the wavelet band by way of frequency division multiplexing.
The present invention provides a kind of data transmission method and optical transmission devices, client traffic data can be mapped in target sub-carriers by the data transmission method, target sub-carriers are mapped on wavelet band by way of frequency division multiplexing, so that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing, during the multiple connection of the wavelet band of the target sub-carriers by low order to high-order, or, from the wavelet band of high-order to during the target sub-carriers solution multiple connection of low order, can directly the target sub-carriers in corresponding frequency band be operated or be changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection, the target sub-carriers can independently be seen each of in wavelet band in the embodiment of the present invention, and it can be independent to the mesh Mark subcarrier is operated, and the low order container for granule for being included to high-order container for granule can carry out independent operate and handle.
Fig. 1 is OTN optical transport network schematic diagram of mechanism shown in the prior art；
Fig. 2 is a kind of embodiment step flow chart of data transmission method provided by the present invention；
Fig. 3 is another embodiment step flow chart of data transmission method provided by the present invention；
Fig. 4 is a kind of structural schematic diagram of the OADM for realizing data transmission method provided by the embodiment of the present invention；
Fig. 5 is another embodiment step flow chart of data transmission method provided by the present invention；
Fig. 6 is a kind of example structure schematic diagram of optical transmission device provided by the present invention；
Fig. 7 is another example structure schematic diagram of optical transmission device provided by the present invention；
Fig. 8 is a kind of example structure schematic diagram of optical transmission device provided by the present invention；
Fig. 9 is another example structure schematic diagram of optical transmission device provided by the present invention；
Figure 10 is another example structure schematic diagram of optical transmission device provided by the present invention.
Embodiment for a better understanding of the present invention is below first illustrated the layered structure of OTN network:
The hierarchical structure of OTN network divides electrical domain, area of light two large divisions, wherein is the channel layer of OTN, the optical transport layer for being OTN in area of light in electrical domain.
Specifically, LO ODUx (full name in English can be used in current OTN electrical domain, Low Order Optical Channel DataUnit-x: Chinese name, low order Optical Channel Data Unit-k x) is adapted to client traffic data, realize that the mapping to client traffic data encapsulates, LO ODUx is mapped to HO ODUk (full name in English later, High Order Optical Channel Data Unit-k: Chinese name, high rank optical channel data unit k), HO ODUk is encapsulated into HO OTUk (high-order optical channel transmission unit k), optical spectrum resource allocation is adapted to by HO OTUk, realize carrying transmission.
Wherein, LO ODUx may include ODU0, ODU1, ODU2, ODU3, ODUflex.
HO ODUk includes ODU1, ODU2, ODU3, ODU4 of fixed rate grade.
OTN is adapted to photosphere spectral bandwidth resource by using the mode of the fixed rates grades such as OTU1 (2.5G), OTU2 (10G), OTU3 (40G), OTU4 (100G) and realizes transmission, and OTU1 (2.5G), OTU2 (10G), OTU3 (40G), OTU4 (100G) occupy the equally spaced optical spectrum bandwidth resources of 1 50GHz respectively.
ODUK can load the digital service signal of SDH (full name in English, Synchronous Digital Hierarchy: Chinese name, synchronous digital system) signal, ethernet signal and miscellaneous stipulations rate.
The OTUK carries ODUK on this section of digital link for establishing one section of digital link on OTN optical transfer network.
The OTUK completes transmission of the ODUK in OTN area of light as carrier.
In area of light, the Optical Transmission Network OTN of OTN divides domain interface and domain inner joint according to the linkage function of transmitting physical interface.
Demapping and the multiplexing of multi-level electric layer are mapped to reduce the photoelectricity of intermediate node, the embodiment of the invention provides the metropolitan area carrying mechanisms of a kind of full light mapping and multiplexing, simplify the mapping and multiplexing of customer interface to line interface, lower power consumption, delay and network cost, is illustrated below in conjunction with data transmission method is provided for the embodiments of the invention shown in Fig. 2.
201, client traffic data are mapped at least one target sub-carriers.
The target sub-carriers are for carrying the client traffic data.
In the present embodiment, by OTN network, the low order Optical Channel Data Unit-k in electrical domain is made into the electrical carrier in electrical domain, i.e., the described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain；
Or, the low order particle for carrying signal in area of light is made into the photon carrier wave in area of light by OTN network, i.e., the described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light.
202, at least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing.
Wherein, the wavelet band includes at least one described target sub-carriers.
Specifically, the wavelet band can correspond to the target sub-carriers, alternatively, the wavelet band corresponds to multiple target sub-carriers.
Because the target sub-carriers are mapped on wavelet band by way of frequency division multiplexing, then each target sub-carriers that wavelet band is included are independent can to see, and independent can be operated.
203, at least one described wavelet band is emitted into optical-fibre channel.
Wherein, the optical-fibre channel transmits the client traffic data for carrying.
In the present embodiment, because at least one wavelet band described in being mapped to the target sub-carriers by way of frequency division multiplexing, so that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing, during the multiple connection of the wavelet band of the target sub-carriers by low order to high-order, or, from the wavelet band of high-order to during the target sub-carriers solution multiple connection of low order, can directly the target sub-carriers in corresponding frequency band be operated or be changed, without by the son of high-order
Wavestrip all carries out solution multiple connection, compared with the existing technology, in the embodiment of the present invention be located at wavelet band in each of the target sub-carriers be can be independent, and independent the target sub-carriers can be operated, and the prior art can only be operated for the container for granule of outer layer, the low order container for granule for being included to high-order container for granule can not carry out independent operate and handle.
It is how to realize that data are transmitted if be the electrical carrier in Optical Transmission Network OTN electrical domain below in conjunction with the explanation target sub-carriers shown in Fig. 3.
301, at least one target sub-carriers is generated.
How the present embodiment is to specifically to generate the target sub-carriers without limitation, for example, generating the target sub-carriers by light supply apparatus.
Specifically, the light supply apparatus is laser light source or more wave sources.
In the present embodiment, the light supply apparatus target sub-carriers generated are the electrical carrier in electrical domain.
302, client traffic data are mapped at least one target sub-carriers.
In the present embodiment, client traffic data can be GE, business rate can be the business datum of 10GE, 40GE, 100GE.
The present embodiment to the client traffic data without limitation.
In the present embodiment, in the electrical domain, the client traffic data are mapped at least one described electrical carrier by electric treatment mode.
In the present embodiment, the client traffic data can correspond to the electrical carrier, alternatively, the client traffic data correspond to multiple electrical carriers.
If the client traffic data correspond to multiple electrical carriers, multiple electrical carriers mutually bundle or electrical carrier cascade.
Wherein, client traffic data are mapped to the detailed process of the target sub-carriers are as follows:
Client traffic data are subjected to serioparallel exchange, and carry out coded modulation, the light supply apparatus passes through the multiple target sub-carriers for being divided into clock frequency interval delta f between external reference clock generates.
The good bit data of coded modulation is mapped in specified target sub-carriers.
Different client traffic data map in continuous multiple target sub-carriers, carry out inverse fourier transform to all target sub-carriers, form baseband signal, exported by high-speed digital-analog converter.
Receive process on the contrary, do not repeat them here specifically in the present embodiment.
303, at least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing.
Specifically, at least one described target sub-carriers are modulated at least one wavelet band.
Specifically, the mode of modulation can be NRZ (full name in English, Non-Return to Zero: Chinese is referred to as, non-return to zero code), PAM4 (full name in English, Pulse Amplitude Modulation: Chinese referred to as, modulation format format), QAM (full name in English, Quadrature Amplitude Modulation: Chinese name, quadrature amplitude modulation) etc., specifically in the present embodiment without limitation.
In the present embodiment, it is multiplexed into the target sub-carriers are ultra dense on the wavelet band.
Specifically, being correspondingly arranged at least one optical modulator with the wavelet band, the optical modulator is used to the electrical carrier being mapped to the wavelet band by way of frequency division multiplexing.
Wherein, mutually orthogonal between at least two target sub-carriers if the wavelet band includes at least two target sub-carriers.
Because the target sub-carriers are mapped by way of frequency division multiplexing on the wavelet band, then by the multiple connection process of the wavelet band of the target sub-carriers of low order to high-order, or, during the solution multiple connection for taking the target sub-carriers of low order to by the wavelet of high-order, can the target sub-carriers directly in corresponding frequency range operated or changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection.
Wherein, the present embodiment can demultiplex connect by least one optical detector being correspondingly arranged with the wavelet band to the wavelet band；
Specifically, the optical detector is for demultiplexing the wavelet band to the electrical carrier.
304, at least one described wavelet band is emitted into optical-fibre channel.
The specific implementation process of step 304 in the present embodiment please be detailed in step 203 shown in Fig. 2, not repeat them here in the present embodiment specifically.
In the present embodiment, the target sub-carriers can be mapped on the wavelet band by the optical modulator being correspondingly arranged with the wavelet band by way of frequency division multiplexing, so that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing, during the multiple connection of the wavelet band of the target sub-carriers by low order to high-order, or, from the wavelet band of high-order to during the target sub-carriers solution multiple connection of low order, can directly the target sub-carriers in corresponding frequency band be operated or be changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection.
Embodiment shown in Fig. 3 is described in further detail below in conjunction with concrete application scene:
Wherein, in this application scene, by be applied to optical add/drop multiplexer OADM in for be illustrated, need it is clear that, this application scene is merely exemplary explanation, without limitation.
This application scene is illustrated for shown in Fig. 4 below:
OADM in this application scene may include a sub- wavestrip demultiplexing module 401 and a sub- wavestrip Multiplexing module 402；
Specifically, the wavelet is located in the area of light of the Optical Transmission Network OTN of the OTN with Multiplexing module 402 with demultiplexing module 401 and the wavelet.
Wherein, the wavelet band demultiplexing module 401 can download a sub- wavestrip；
The wavelet band Multiplexing module 402 can upload a sub- wavestrip.
Specifically, the wavelet carries out the upper and lower of wavelet band by passive optical filters 403 with Multiplexing module 402 with demultiplexing module 401 and the wavelet.
For other wavelet bands that do not download, which can realize break-through.
Specifically, downloading wavelet band by the passive optical filters 403 first during downloading wavelet band, the wavelet band is received by wavelet band receiving module 404；
Wherein, the wavelet band receiving module 404 is located in area of light and electrical domain simultaneously.
The wavelet can carry out photoelectric conversion, the baseband signal of output-bound electrical carrier to the wavelet band received with receiving module 404.
The wavelet band demultiplexing module 401 demultiplexes intensive electrical carrier.
Wherein, the wavelet band demultiplexing module 401 may be provided with band high-speed DAC (full name in English, Digital to analog converter: Chinese name, digital analog converter) DSP (full name in English, digital signal processing: Chinese name, Digital Signal Processing) chip, and wavelet band demultiplexing module 401 is located in area of light.
During uploading wavelet band, intensive electrical carrier is multiplexed with to the baseband signal of intensive carrier wave by wavelet with Multiplexing module 402 first；
Wherein, the wavelet is provided with the dsp chip with high-speed DAC with Multiplexing module 402.
The wavelet receives the baseband signal of the intensive carrier wave with transmitting module 405 to carry out electro-optical modulation, becomes a sub- band signals；
Established wavelet band is uploaded in optical-fibre channel and other wavelet band multiplexing transmissions by the passive optical filters 403.
It is how to realize that data are transmitted if be the photon carrier wave in Optical Transmission Network OTN area of light below in conjunction with the explanation target sub-carriers shown in Fig. 5.
501, at least one target sub-carriers is generated.
How the present embodiment is to specifically to generate the target sub-carriers without limitation, for example, generating the target sub-carriers by light supply apparatus.
Specifically, the light supply apparatus is laser light source or more wave sources.
In the present embodiment, the light supply apparatus target sub-carriers generated are the photon carrier wave in area of light.
502, client traffic data are mapped at least one target sub-carriers.
In the present embodiment, client traffic data are directly connect on the photon carrier wave being mapped in area of light.
Specifically, client traffic data are mapped at least one described photon carrier wave in area of light.
The client traffic data in broadband and ultra wide band can be mapped directly on the photon carrier wave in area of light through this embodiment, be directly realized by the mapping of customer interface to photon carrier wave, to be scheduled in area of light, realize customer interface light connects end to end.
And the present embodiment maps directly to client traffic data on photon carrier wave, avoids multilayer electrical multiplexed, reduces end station and intermediate node handles power consumption and processing delay.
Preferably, the photon carrier wave size flexibility in the present embodiment is flexible, the mapping of various client traffic data can be supported, be simple and efficient in the treatment process of demultiplexing and demapping.
More specifically, at least one passive optical filters is correspondingly arranged on the wavelet band, the passive optical filters are used to the client traffic data being mapped to the photon carrier wave.
In the present embodiment, the client traffic data can correspond to the photon carrier wave, alternatively, the client traffic data correspond to multiple photon carrier waves.
If the client traffic data correspond to multiple photon carrier waves, multiple photon carrier waves mutually bundle or electrical carrier cascade.
503, at least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing.
Specifically, at least one described target sub-carriers are modulated at least one wavelet band.
Specifically, modulation mode can for NRZ (full name in English, Non-Return to Zero: Chinese referred to as, non-return to zero code), PAM4 (full name in English, Pulse Amplitude Modulation: Chinese referred to as,
Modulation format format), QAM (full name in English, Quadrature Amplitude Modulation: Chinese name, quadrature amplitude modulation) etc., specifically in the present embodiment without limitation.
In the present embodiment, it is multiplexed into the target sub-carriers are ultra dense on the wavelet band.
Wherein, mutually orthogonal between at least two target sub-carriers if the wavelet band includes at least two target sub-carriers.
Specifically, being correspondingly arranged at least one passive optical filters with the wavelet band.
The passive optical filters are used to the client traffic data being mapped to the photon carrier wave, and the passive optical filters are also used to for the photon carrier wave being mapped to by way of frequency division multiplexing on the wavelet band.
Because the target sub-carriers are mapped by way of frequency division multiplexing on the wavelet band, then by the multiple connection process of the wavelet band of the target sub-carriers of low order to high-order, or, during the solution multiple connection for taking the target sub-carriers of low order to by the wavelet of high-order, can the target sub-carriers directly in corresponding frequency range operated or changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection.
504, at least one described wavelet band is emitted into optical-fibre channel.
The client traffic data that each wavelet band is carried are loaded on the channel of light emitting unit with transmitting module by the wavelet of light and are transmitted.
In the present embodiment, the target sub-carriers can be mapped on the wavelet band by the passive optical filters being correspondingly arranged with the wavelet band by way of frequency division multiplexing, so that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing, during the multiple connection of the wavelet band of the target sub-carriers by low order to high-order, or, from the wavelet band of high-order to during the target sub-carriers solution multiple connection of low order, can directly the target sub-carriers in corresponding frequency band be operated or be changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection.
Concrete application scene shown in fig. 5 please in detail as shown in Figure 4, specifically repeats no more, wherein the application scenarios of this application scene and Fig. 3 the difference is that:
The wavelet can carry out photoelectric conversion, the baseband signal of output-bound photon carrier wave to the wavelet band received with receiving module 404.
The wavelet can demultiplex intensive photon carrier wave with demultiplexing module 401.
It is first the baseband signal of intensive carrier wave by intensive photon carrier multiplexing with Multiplexing module 402 by wavelet during uploading wavelet band.
Illustrate a kind of optical transmission device provided by the present invention below in conjunction with embodiment shown in fig. 6, the optical transmission device can reduce the photoelectricity mapping demapping and the multiplexing of multi-level electric layer of intermediate node, simplify the mapping and multiplexing of customer interface to line interface, lowers power consumption, delay and network cost.
And the optical transmission device shown in fig. 6 to realize data transmission method shown in Fig. 2 when, the optical transmission device includes:
First map unit 601, for client traffic data to be mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light.
Second map unit 602, at least one described target sub-carriers to be mapped at least one wavelet band by way of frequency division multiplexing.
Transmitting unit 603, for emitting at least one described wavelet band into optical-fibre channel.
Wherein, how the optical transmission device shown in the present embodiment specifically executes the data transmission method, please be detailed in embodiment shown in Fig. 2, not repeat them here in the present embodiment specifically.
In the present embodiment, because the target sub-carriers are mapped on the wavelet band by way of frequency division multiplexing, so that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing, during the multiple connection of the wavelet band of the target sub-carriers by low order to high-order, or, from the wavelet band of high-order to during the target sub-carriers solution multiple connection of low order, can directly the target sub-carriers in corresponding frequency band be operated or be changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection, compared with the existing technology, the target sub-carriers can independently be seen each of in wavelet band in the embodiment of the present invention, and independent the target sub-carriers can be operated, and the prior art can only see the container for granule of outer layer, to high-order The low order container for granule that grain container is included can not carry out independent operate and handle.
When illustrating below in conjunction with embodiment shown in Fig. 7 to realize data transmission method shown in Fig. 3, the structure of the optical transmission device.
The optical transmission device includes:
Generation unit 701, for generating at least one described target sub-carriers, wherein it is mutually orthogonal between the target sub-carriers included by the wavelet band if the wavelet band includes at least two target sub-carriers.
First map unit 702, client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain for carrying the client traffic data, at least one described target sub-carriers.
First map unit 702 is also used to, and in the electrical domain, the client traffic data are mapped at least one described electrical carrier；
Second map unit 703, at least one described target sub-carriers to be mapped at least one wavelet band by way of frequency division multiplexing, and the wavelet band includes at least one described target sub-carriers.
Transmitting unit 704, for emitting at least one described wavelet band into optical-fibre channel.
How the optical transmission device shown in the present embodiment specifically executes the data transmission method shown in Fig. 3, please in detail as shown in Figure 3, does not repeat them here in the present embodiment specifically.
Optionally, if the optical transmission device shown in Fig. 7 is to execute the data transmission method shown in fig. 5, first map unit 702, for client traffic data to be mapped at least one target sub-carriers, the target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light for carrying the client traffic data, the target sub-carriers；
First map unit 702 is also used to, and in the area of light, the client traffic data are mapped on the photon carrier wave.
How the optical transmission device shown in the present embodiment specifically executes the data transmission method shown in fig. 5, please in detail as shown in Figure 5, does not repeat them here in the present embodiment specifically.
In the present embodiment, the target sub-carriers can be mapped on the wavelet band by optical transmission device by way of frequency division multiplexing, so that each target sub-carriers and the wavelet band can carry out multiple connection in multiplex process by the way of frequency division multiplexing, during the multiple connection of the wavelet band of the target sub-carriers by low order to high-order, or, from the wavelet band of high-order to during the target sub-carriers solution multiple connection of low order, can directly the target sub-carriers in corresponding frequency band be operated or be changed, it is not necessary that the wavelet band of high-order is all carried out solution multiple connection.
Illustrate a kind of optical transmission device provided by the present invention from the angle of hardware below in conjunction with embodiment shown in Fig. 8, the optical transmission device can reduce the photoelectricity mapping demapping and the multiplexing of multi-level electric layer of intermediate node, simplify the mapping and multiplexing of customer interface to line interface, lowers power consumption, delay and network cost.
As shown in figure 8, the optical transmission device includes processor 801 and transmitter 802.
Wherein, it is attached between the processor 801 and the transmitter 802 by bus, certainly
Other connection types can be used, specific connection type is not construed as limiting in the present embodiment.
The present embodiments relate to the optical transmission device can have than more or fewer components illustrated in fig. 8, two or more components can be combined, or can have different components and configure or set up, all parts can be in the combination realization of hardware, software or hardware and software including one or more signal processings and/or specific integrated circuit.
The processor 801 is used for, client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；
The processor 801 is also used to, at least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing；
The transmitter 802 is used for, at least one described wavelet band is emitted into optical-fibre channel.
Optionally, the processor 801 is also used to, and in the electrical domain, the client traffic data are mapped at least one described electrical carrier；
Or,
The processor 801 is also used to, and in the area of light, the client traffic data are mapped on the photon carrier wave.
Optionally, as shown in figure 8, the optical transmission device further includes light supply apparatus 803；
The light supply apparatus 803 is for generating at least one described target sub-carriers, and the light supply apparatus is laser light source or more wave sources.
Wherein, mutually orthogonal between the target sub-carriers included by the wavelet band if the wavelet band includes at least two target sub-carriers.
Illustrate below in conjunction with shown in Fig. 9, if the target sub-carriers are photon carrier wave, the specific structure of the processor:
In the present embodiment, the processor is passive optical filters 901.
At least one described passive optical filters 901 is correspondingly arranged on the wavelet band；
For demultiplexing the wavelet band to the photon carrier wave, the passive optical filters 901 are also used to for the photon carrier wave being mapped to by way of frequency division multiplexing on the wavelet band passive optical filters 901.
The light supply apparatus 903 shown in Fig. 9 please be detailed in Fig. 8 to the explanation of light supply apparatus 803, and the transmitter 902 shown in Fig. 9 please be detailed in Fig. 8 to the explanation of transmitter 802, not repeat them here in the present embodiment specifically.
Illustrate below in conjunction with shown in Figure 10, if the target sub-carriers are electrical carrier, the specific structure of the processor:
The processor is optical modulator 1001 and optical detector 1004.
At least one described optical modulator 1001 and the optical detector 1004 are correspondingly arranged on the wavelet band；
The optical detector 1004 is for demultiplexing the wavelet band to the electrical carrier.
The electrical carrier is mapped on the wavelet band by the optical modulator 1001 by way of frequency division multiplexing.
The light supply apparatus 1003 shown in Fig. 10 please be detailed in Fig. 8 to the explanation of light supply apparatus 803, and the transmitter 1002 shown in Fig. 10 please be detailed in Fig. 8 to the explanation of transmitter 802, not repeat them here in the present embodiment specifically.
It is apparent to those skilled in the art that for convenience and simplicity of description, the specific work process of the system, apparatus, and unit of foregoing description can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And these are modified or replaceed, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (11)
- A kind of data transmission method characterized by comprisingClient traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；At least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing；At least one described wavelet band is emitted into optical-fibre channel.
- The method according to claim 1, wherein described client traffic data are mapped at least one target sub-carriers includes:In the electrical domain, the client traffic data are mapped at least one described electrical carrier；Or,In the area of light, the client traffic data are mapped on the photon carrier wave.
- Method according to claim 1 or 2, which is characterized in that it is described client traffic data are mapped at least one target sub-carriers before, the method also includes:Generate at least one described target sub-carriers, wherein mutually orthogonal between at least two target sub-carriers if the wavelet band includes at least two target sub-carriers.
- A kind of optical transmission device characterized by comprisingFirst map unit, client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；Second map unit, at least one described target sub-carriers to be mapped at least one wavelet band by way of frequency division multiplexing；Transmitting unit, for emitting at least one described wavelet band into optical-fibre channel.
- Optical transmission device according to claim 4, which is characterized in thatFirst map unit is also used to, and in the electrical domain, the client traffic data are mapped at least one described electrical carrier；Or,First map unit is also used to, and in the area of light, the client traffic data are mapped on the photon carrier wave.
- Optical transmission device according to claim 4 or 5, which is characterized in that the optical transmission device further include:Generation unit, for generating at least one described target sub-carriers, wherein mutually orthogonal between the target sub-carriers included by the wavelet band if the wavelet band includes at least two target sub-carriers.
- A kind of optical transmission device, which is characterized in that including processor interconnected and transmitter；The processor is used for, client traffic data are mapped at least one target sub-carriers, at least one described target sub-carriers are for carrying the client traffic data, at least one described target sub-carriers are the electrical carrier in Optical Transmission Network OTN electrical domain, or, at least one described target sub-carriers are the photon carrier wave in Optical Transmission Network OTN area of light；The processor is also used to, at least one described target sub-carriers are mapped at least one wavelet band by way of frequency division multiplexing；The transmitter is used for, at least one described wavelet band is emitted into optical-fibre channel.
- Optical transmission device according to claim 7, which is characterized in that the processor is also used to, and in the electrical domain, the client traffic data are mapped at least one described electrical carrier；Or,The processor is also used to, and in the area of light, the client traffic data are mapped on the photon carrier wave.
- Optical transmission device according to claim 7 or 8, it is characterized in that, the optical transmission device further includes light supply apparatus, the light supply apparatus is for generating at least one described target sub-carriers, and the light supply apparatus is laser light source or more wave sources, wherein, mutually orthogonal between the target sub-carriers included by the wavelet band if the wavelet band includes at least two target sub-carriers.
- Optical transmission device according to any one of claims 7 to 9, which is characterized in that the processor is passive optical filters, is correspondingly arranged at least one described passive optical filters with the wavelet band；For demultiplexing the wavelet band to the photon carrier wave, the passive optical filters are also used to for the photon carrier wave being mapped to by way of frequency division multiplexing on the wavelet band passive optical filters.
- Optical transmission device according to any one of claims 7 to 9, which is characterized in that the place Managing device is optical modulator and optical detector, is correspondingly arranged at least one described optical modulator and the optical detector with the wavelet band；The optical detector is used to demultiplex on the wavelet band to the electrical carrier, and the optical modulator is used to the electrical carrier being mapped to the wavelet band by way of frequency division multiplexing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/092734 WO2017067001A1 (en) | 2015-10-23 | 2015-10-23 | Data transmission method, and optical transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107925503A true CN107925503A (en) | 2018-04-17 |
| CN107925503B CN107925503B (en) | 2019-07-23 |
Family
ID=58556612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580082869.8A Active CN107925503B (en) | 2015-10-23 | 2015-10-23 | A kind of data transmission method and optical transmission device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107925503B (en) |
| WO (1) | WO2017067001A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525674A (en) * | 2003-02-28 | 2004-09-01 | ���ǵ�����ʽ���� | Multi transmission/reception orthogonal frequency division multiplexing system and method |
| CN101060378A (en) * | 2006-04-20 | 2007-10-24 | 中兴通讯股份有限公司 | A wave division multiple transmission system and method |
| CN102334321A (en) * | 2009-02-26 | 2012-01-25 | 阿尔卡特朗讯 | Power manageable optical OFDM transponder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8687964B2 (en) * | 2010-12-13 | 2014-04-01 | Dynamic Method Enterprise Limited | In-band control mechanism |
| US8917988B2 (en) * | 2012-12-07 | 2014-12-23 | At&T Intellectual Property I, L.P. | End-to-end carrier frequency control to improve bandwidth utilization in an optical network |
-
2015
- 2015-10-23 CN CN201580082869.8A patent/CN107925503B/en active Active
- 2015-10-23 WO PCT/CN2015/092734 patent/WO2017067001A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525674A (en) * | 2003-02-28 | 2004-09-01 | ���ǵ�����ʽ���� | Multi transmission/reception orthogonal frequency division multiplexing system and method |
| CN101060378A (en) * | 2006-04-20 | 2007-10-24 | 中兴通讯股份有限公司 | A wave division multiple transmission system and method |
| CN102334321A (en) * | 2009-02-26 | 2012-01-25 | 阿尔卡特朗讯 | Power manageable optical OFDM transponder |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017067001A1 (en) | 2017-04-27 |
| CN107925503B (en) | 2019-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102820951B (en) | The method and apparatus transmitting, receiving client signal in optical transfer network | |
| US9497064B2 (en) | Method and apparatus for transporting ultra-high-speed Ethernet service | |
| JP4878629B2 (en) | Multiplex transmission system and multiple transmission method | |
| CN102884808B (en) | A kind of method and device distributing optical spectrum bandwidth resources | |
| CN102025478B (en) | Method and device for transmitting and receiving data | |
| CN102893629A (en) | Method of transmitting client information in optical transmisstion network and transmission device | |
| US9414135B2 (en) | Flexible-client, flexible-line interface transponder | |
| EP2733880B1 (en) | Method, device and system for processing variable rate signals | |
| CN102511171A (en) | Method, device and system for transmitting business data on optical transmission network | |
| CN103716108B (en) | The data mapping method and device of optical transfer network | |
| WO2016192480A1 (en) | Bandwidth adjustment method and device | |
| CN103780327B (en) | Data transferring method and device | |
| US20160173224A1 (en) | Method and apparatus for transporting a client signal over an optical network | |
| CN107925503B (en) | A kind of data transmission method and optical transmission device | |
| US9729245B2 (en) | Using artificial justifications to apply noise shaping to actual justifications associated with mapping client data | |
| CN103595515B (en) | The data mapping method and device of optical transfer network | |
| CN114189307B (en) | OTN signal transmission method and system and OTU0 interface device | |
| CN107968699A (en) | The transmission method of 2Mbit/s low speed signals in a kind of OTN networks | |
| KR20090039403A (en) | Method and apparatus for adapting a number of different client |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |