CN105429840B - Data transmission method and device - Google Patents

Data transmission method and device Download PDF

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CN105429840B
CN105429840B CN201410466402.0A CN201410466402A CN105429840B CN 105429840 B CN105429840 B CN 105429840B CN 201410466402 A CN201410466402 A CN 201410466402A CN 105429840 B CN105429840 B CN 105429840B
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frame
data frame
gfp
oduflex
data
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CN105429840A (en
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杨湘鄂
钟长龙
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention discloses a data transmission method, which encapsulates a received first Ethernet data frame into a first GFP-F data frame; converting the first GFP-F data frame into a first ODUflex data frame; forwarding the first ODUflex data frame to a designated port of a cross matrix backplane; converting the first ODUflex data frame forwarded to the appointed port into a second GFP-F data frame; and deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame. The invention further discloses a data transmission device. The invention solves the problem of transmitting the data of the Ethernet of a plurality of channels at any rate on the unified OTN transmission platform, greatly reduces the types of the board cards and improves the flexibility of the access, mapping, multiplexing and scheduling capabilities of the board cards and the ports compared with the traditional WDM.

Description

Data transmission method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a data transmission method and apparatus.
Background
With the development of the internet, data traffic increases rapidly, a DWDM (Dense wavelength division Multiplexing) Network of Optical communication cannot meet the requirement, and an OTN (Optical Transport Network) is proposed by the international standards organization to serve as a bottom layer transmission Network to meet the increasing data bandwidth requirement. The OTN network defines frame format, overhead and rate levels, etc. Currently, an OTN defines 4 transmission rate classes, which are OTU1, OTU2, OTU3 and OTU4 of an Optical Channel Transport Unit (OTUk). The OTUk signal is an actual transmission signal, and is composed of 4 rows by 4080 columns (4 × 4080 bytes) to form one frame. The frame header uses a special flag signal to occupy the 1 st column to the 6 th column in the 1 st row, and is generally denoted by 16-ary numbers as F6, F6, F6, 28. By searching these 6 fixed bytes, the header and thus other data within the frame can be found. The OTUk signal carries an ODUk (Optical Channel Data Unit), where one frame of the ODUk is composed of 4 lines by 3824 columns (4 x 3824 bytes), the ODUk carries an OPUk (Optical Channel Payload Unit), and the frame of the OPUk is composed of 4 lines by 3808 columns (4 x 3808 bytes). With the development of IP networks, OTN networks need to be able to directly carry ethernet data, and therefore, how to transmit data of ethernet with multiple channels and at any rate on a unified OTN transmission platform is a problem to be solved urgently.
Disclosure of Invention
The invention mainly aims to provide a data transmission method and a data transmission device, and aims to solve the problem that data of Ethernet with any rate and multiple channels is transmitted on a unified OTN (optical transport network) transmission platform.
In order to achieve the above object, the present invention provides a data transmission method, including:
encapsulating the received first Ethernet data frame into a first frame mapping mode GFP-F data frame;
converting the first GFP-F data frame into a first flexible rate ODUflex data frame;
forwarding the first ODUflex data frame to a designated port of a cross matrix backplane;
converting the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
and deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame.
Preferably, the step of converting the first GFP-F data frame into the first ODUflex data frame specifically includes:
acquiring a frame channel of the first GFP-F data frame;
searching a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and acquiring an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
and outputting the first GFP-F data frame to the correspondingly allocated ODUflex frame time slot position.
Preferably, the step of obtaining the channel number of the first GFP-F data frame further comprises:
and configuring a timeslot configuration table corresponding to the frame channel of the first GFP-F data frame and the frame timeslot position of the first ODUflex data frame.
Preferably, the step of converting the first ODUflex data frame forwarded to the designated port into the second GFP-F data frame specifically includes:
acquiring a frame time slot position of the first ODUflex data frame;
searching a pre-configured timeslot configuration table according to the frame timeslot position of the first ODUflex data frame, and acquiring a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
and outputting the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
Preferably, the step of obtaining the second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame includes:
and configuring a time slot configuration table corresponding to the frame time slot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame.
In order to solve the above technical problem, the present invention further provides a time division to space division conversion method, including:
acquiring a frame channel of a first GFP-F data frame;
searching a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and acquiring an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
and outputting the first GFP-F data frame to the correspondingly allocated ODUflex frame time slot position.
In order to solve the above technical problem, the present invention further provides a space-division to time-division conversion method, where the space-division to time-division conversion method includes:
acquiring a second GFP-F data frame corresponding to the frame time slot position of the first ODUflex data frame;
searching a pre-configured timeslot configuration table according to the frame timeslot position of the first ODUflex data frame, and acquiring a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
and outputting the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
In order to solve the above technical problem, the present invention further provides a data transmission apparatus, including:
a frame encapsulating module, configured to encapsulate the received first ethernet data frame into a first GFP-F data frame;
a time division conversion module, configured to convert the first GFP-F data frame into a first ODUflex data frame;
a forwarding module, configured to forward the first ODUflex data frame to a designated port of a cross matrix backplane;
a space division conversion module, configured to convert the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
and the deframing module is used for deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame.
Preferably, the time division conversion module includes:
a first channel acquiring unit, configured to acquire a frame channel of a first GFP-F data frame;
a first time slot obtaining unit, configured to search a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and obtain an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
a first output unit, configured to output the first GFP-F data frame to the timeslot position of the ODUflex frame that is correspondingly allocated.
Preferably, the time division converting module further includes:
a first configuration unit, configured to configure a timeslot configuration table corresponding to a frame channel of the first GFP-F data frame and a frame timeslot position of the first ODUflex data frame.
Preferably, the space division converting module includes:
a second timeslot acquiring unit, configured to acquire a frame timeslot position of the first ODUflex data frame;
a second channel obtaining unit, configured to search a pre-configured timeslot configuration table according to a frame timeslot position of the first ODUflex data frame, and obtain a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
a second output unit, configured to output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
Preferably, the space division converting module further includes:
and a second configuration unit, configured to configure a timeslot configuration table corresponding to the frame timeslot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame.
In order to solve the above technical problem, the present invention further provides a time division to space division conversion apparatus, comprising:
the first channel acquisition module is used for acquiring a frame channel of a first GFP-F data frame;
a first time slot obtaining module, configured to search a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and obtain an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
a first output module, configured to output the first GFP-F data frame to the correspondingly allocated ODUflex frame timeslot location.
In order to solve the above technical problem, the present invention further provides a space division to time division conversion apparatus, comprising:
a second timeslot acquisition module, configured to acquire a frame timeslot position of the first ODUflex data frame;
a second channel obtaining module, configured to search a pre-configured timeslot configuration table according to a frame timeslot position of the first ODUflex data frame, and obtain a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
a second output module, configured to output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
Provided is a data transmission method, which comprises the following steps:
encapsulating the received first Ethernet data frame into a first GFP-F data frame;
converting the first GFP-F data frame into a first ODUflex data frame;
forwarding the first ODUflex data frame to a designated port of a cross matrix backplane;
converting the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
and deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame.
Preferably, the step of converting the first GFP-F data frame into the first ODUflex data frame specifically includes:
configuring a corresponding relation between a first GFP-F frame channel and a first ODUflex frame time slot;
writing a first GFP-F data frame in the first GFP-F frame channel into a corresponding position of a first storage module;
and reading the first GFP-F data frame written into the corresponding position of the first storage module and outputting the first GFP-F data frame written into the corresponding position of the first storage module to a first ODUflex frame timeslot corresponding to the first GFP-F frame channel. And realizing the conversion from the time-division first GFP-F data frame to the space-division first ODUflex data frame.
Preferably, the step of converting the first ODUflex data frame forwarded to the designated port into the second GFP-F data frame specifically includes:
configuring a corresponding relation between the first ODUflex frame channel and a second GFP-F frame time slot;
writing the first ODUflex data frame into a corresponding position of a second storage module;
and reading the first ODUflex data frame written into the corresponding position of the second storage module, and outputting the first ODUflex data frame written into the corresponding position of the second storage module to a second GFP-F frame timeslot corresponding to the first ODUflex frame channel. And realizing the conversion from the space-division ODUflex data frame to the time-division GFP-F data frame.
In order to solve the above technical problem, the present invention further provides a time division to space division conversion method, including:
configuring a corresponding relation between a first GFP-F frame channel and a first ODUflex frame time slot;
writing a first GFP-F data frame in the first GFP-F frame channel into a corresponding position of a first storage module;
and reading the first GFP-F data frame written into the corresponding position of the first storage module and outputting the first GFP-F data frame written into the corresponding position of the first storage module to a first ODUflex frame timeslot corresponding to the first GFP-F frame channel.
In order to solve the above technical problem, the present invention further provides a space-division to time-division conversion method, where the space-division to time-division conversion method includes:
configuring a corresponding relation between the first ODUflex frame channel and a second GFP-F frame time slot;
writing the first ODUflex data frame into a corresponding position of a second storage module;
and reading the first ODUflex data frame written into the corresponding position of the second storage module, and outputting the first ODUflex data frame written into the corresponding position of the second storage module to a second GFP-F frame timeslot corresponding to the first ODUflex frame channel.
In order to solve the above technical problem, the present invention further provides a data transmission apparatus, including:
a frame encapsulating module, configured to encapsulate the received first ethernet data frame into a first GFP-F data frame;
a time division conversion module, configured to convert the first GFP-F data frame into a first ODUflex data frame;
a forwarding module, configured to forward the first ODUflex data frame to a designated port of a cross matrix backplane;
a space division conversion module, configured to convert the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
and the deframing module is used for deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame.
Preferably, the time division conversion module specifically includes:
a first configuration unit, configured to configure a corresponding relationship between a first GFP-F frame channel and a first ODUflex frame timeslot;
a first writing unit, configured to write a first GFP-F data frame in the first GFP-F frame channel to a corresponding location of a first storage module;
a first readout unit, configured to read out the first GFP-F data frame written to the corresponding location of the first storage module and output the first GFP-F data frame written to the corresponding location of the first storage module to a first ODUflex frame timeslot corresponding to the first GFP-F frame channel.
Preferably, the space division converting module includes:
a second configuration unit, configured to configure a corresponding relationship between the first ODUflex frame channel and a second GFP-F frame timeslot;
a second writing unit, configured to write the first ODUflex data frame into a corresponding location of a second storage module;
a second readout unit, configured to read out the first ODUflex data frame written to the corresponding location of the second storage module and output the first ODUflex data frame written to the corresponding location of the second storage module to a second GFP-F frame timeslot corresponding to the first ODUflex frame channel.
In order to solve the above-mentioned technical problem, the present invention further provides a time division to space division conversion apparatus, comprising:
a first configuration module, configured to configure a corresponding relationship between a first GFP-F frame channel and a first ODUflex frame timeslot;
the first write-in module is used for writing the first GFP-F data frame in the first GFP-F frame channel into a corresponding position of the first storage module;
a first readout module, configured to read out the first GFP-F data frame written to the corresponding location of the first storage module and output the first GFP-F data frame written to the corresponding location of the first storage module to a first ODUflex frame timeslot corresponding to the first GFP-F frame channel.
In order to solve the above technical problem, the present invention further provides a space division to time division conversion apparatus, comprising:
a second configuration module, configured to configure a corresponding relationship between the first ODUflex frame channel and a second GFP-F frame timeslot;
a second writing module, configured to write the first ODUflex data frame into a corresponding location of a second storage module;
a second readout module, configured to read out the first ODUflex data frame written in the corresponding location of the second storage module and output the first ODUflex data frame written in the corresponding location of the second storage module to a second GFP-F frame timeslot corresponding to the first ODUflex frame channel.
The data transmission method provided by the invention encapsulates the received first Ethernet data frame into a first GFP-F data frame; converting the first GFP-F data frame into a first ODUflex data frame; forwarding the first ODUflex data frame to a designated port of a cross matrix backplane; converting the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame; and deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame. The data transmission method provided by the invention solves the problem of transmitting the data of the Ethernet of a plurality of channels at any rate on a unified OTN transmission platform, greatly reduces the types of the board cards compared with the traditional WDM, and improves the flexibility of the access, mapping, multiplexing and scheduling capabilities of the board cards and the ports; meanwhile, the cross matrix backplane supports cross scheduling of the ODUflex, and the service scheduling mode is flexible.
Drawings
FIG. 1 is a flowchart illustrating a data transmission method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a detailed process of the step of converting the first GFP-F data frame into the first ODUflex data frame in fig. 1;
fig. 3 is a flowchart illustrating a detailed process of the step of converting the first ODUflex data frame forwarded to the designated port into the second GFP-F data frame in fig. 1;
FIG. 4 is a schematic flow chart illustrating an embodiment of a time-to-space conversion method according to the present invention;
FIG. 5 is a flowchart illustrating an embodiment of a space-division to time-division conversion method according to the present invention;
FIG. 6 is a functional block diagram of a data transmission apparatus according to an embodiment of the present invention;
FIG. 7 is a functional block diagram of the time division conversion module shown in FIG. 6;
FIG. 8 is a functional block diagram of the air separation and conversion module of FIG. 6;
FIG. 9 is a functional block diagram of a time-to-space conversion apparatus according to the present invention;
fig. 10 is a functional block diagram of the space-time to time-division conversion apparatus according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention provides a data transmission method, and referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of the data transmission method of the present invention, and in an embodiment, the data transmission method includes:
step S100, encapsulating the received first ethernet data frame into a first GFP-F data frame.
The data transmission device receives a first Ethernet data frame transmitted by Ethernet, a GFP-F mode is adopted, the received first Ethernet data frame is mapped into a first GFP-F data frame to be output, the Ethernet data frame is mapped into a GFP-F data frame, the Ethernet data frames of all channels occupy the same data bus in a time division multiplexing mode, and the GFP-F data frame is mapped into a serial Ethernet data frame. Generally, ethernet data bearer to OTN networks employs a GFP (generic framing Procedure) method. GFP can transmit both variable-length packets and fixed-length blocks in byte-synchronous links, and is an advanced, simple, and flexible data signal adaptation and mapping technique. It adopts frame delimitation mode similar to ATM technology, and can transparently package various data signals of upper layer into signals which can be effectively transmitted in existent transmission network, and is favourable for interconnection and intercommunication of several operator equipments, and it introduces the concept of several Service grades so as to implement statistical multiplexing of user data and QoS (Quality of Service) function. The GFP standard defines two modes: the transparent transmission mode and the frame mapping mode provide a general mechanism for adapting the data stream of the high-level client to the transmission network. GFP is classified into GFP-T (GFP-Transparent, Transparent mode) and GFP-F (GFP-Frame-mapped, Frame-mapped mode). The transparent transmission mode (GFP-T) is a block-coded data stream mode, and block-coded signals with a fixed frame length can be processed in a transparent mapping manner in time without waiting for the entire frame to be received, and this adaptation is suitable for processing real-time services such as video signals (DVB-Digital video broadcast) and block-coded signals such as storage services. The Frame mapping mode (GFP-F) is a PDU-ordered data stream mode, and they may be processed after receiving a complete Frame in an adaptation mode (Frame-Mapped) for mapping the entire Frame; GFP frames with different lengths and belonging to different services can be time-division multiplexed to a channel with higher speed for transmission, and the data packet multiplexing mode greatly improves the utilization rate of network bandwidth.
Step S200, convert the first GFP-F data frame into a first ODUflex data frame.
And the data transmission device converts the time-division first GFP-F data frame into a space-division first ODUflex data frame and further maps the GFP-F data frame to an ODUflex data frame of the OTN. Generally, ethernet data of any rate is mapped into GFP-F frames using a GFP-F mode. The GFP-F frame needs to be further mapped to an OTN frame, and in order to support an ethernet service with an arbitrary rate, the GFP-F frame needs to be mapped to a flexible rate ODU (ODUflex for short) frame. In order to distinguish Ethernet data of different channels, the data entering the GFP-F mapping module is provided with a channel number. Generally speaking, GFP-F processing is performed in a channel manner, where ethernet data of a certain channel (assumed to be a channel) is processed in a certain time period, and the ethernet data of the channel a is mapped into a GFP-F frame; after the ethernet data of the channel a is processed, the next channel (assumed to be the channel B) is processed, and the ethernet data of the channel B is mapped into a GFP-F frame. The GFP-F frame after GFP-F mapping is also divided into channels with channel number marks. The GFP-F mapped data is in a serial time division manner when viewed from time, where the time division means a certain period of time when the data of each channel uses the same data bus. The time-division data needs to be mapped into space-division ODUflex data. The term space division refers to the simultaneous existence of multiple data buses, each carrying data of different channels, where GFP-F frame data of different channels, i.e. ethernet data of different channels, is required. This requires that GFP-F frame data of different time-divided channels be converted into space-division data and exist on separate data buses.
Step S300, forward the first ODUflex data frame to a designated port of a cross matrix backplane.
And the data transmission device forwards the first ODUflex data frame to a corresponding port of the cross matrix backplane through the cross matrix backplane.
Step S400, convert the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame.
The data transmission device calls out a GFP-F data frame carried by the ODUflex signal, converts a first ODUflex data frame in space division into a second GFP-F data frame in time division, and maps the ODUflex data frame of the OTN to the GFP-F data frame.
Step S500, deframing the second GFP-F data frame into a second ethernet data frame and outputting the second ethernet data frame.
The data transmission device deframes the converted second GFP-F data frame into a second Ethernet data frame, maps the GFP-F data frame to the Ethernet data frame, the Ethernet data frame is mapped into a GFP-F data frame, and the GFP-F data frame of the same root data bus is multiplexed into the Ethernet data frame of the multi-channel in a space division multiplexing mode.
The data transmission method provided by the embodiment solves the problem of transmitting the data of the ethernet with any rate and multiple channels on the unified OTN transmission platform, greatly reduces the types of the board cards compared with the traditional WDM, and improves the flexibility of the access, mapping, multiplexing and scheduling capabilities of the board cards and the ports; meanwhile, the cross matrix backplane supports cross scheduling of the ODUflex, and the service scheduling mode is flexible.
Further referring to fig. 2, fig. 2 is a detailed flowchart of step S200 of the data transmission method in this embodiment, where step S200 specifically includes:
step S210A, configure a timeslot configuration table corresponding to the frame channel of the first GFP-F data frame and the frame timeslot position of the first ODUflex data frame.
The data transmission device configures a timeslot configuration table of a first GFP-F frame channel and a first ODUflex frame timeslot, in a 10G two-layer service board, the ODUflex has 8 timeslots in total, each channel may be configured with 1 timeslot or more than 1 timeslot, 8 timeslots may be configured at most, 8 channels may be supported at most, and all channels occupy 8 timeslots in total. In a 40G two-layer service board, the ODUflex has 32 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 32 timeslots may be configured, and the maximum supported channel may support 32 channels, and all channels occupy 32 total timeslots. In a 100G two-layer service board, the ODUflex has 80 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 80 timeslots may be configured, and the maximum may support 80 channels, and all channels occupy 80 total timeslots. Assuming that the first GFP-F frame channel includes a road a and a channel B, where the channel a needs to occupy the 1 st timeslot and the 2 nd timeslot of the first ODUflex, the channel a is configured to correspond to the 1 st timeslot and the 2 nd timeslot of the first ODUflex frame timeslot. Assuming that the channel B needs to occupy the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot, it is sufficient to configure the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot corresponding to the channel B. The corresponding relationship between the channels and the time slots may be a one-to-one relationship or a one-to-many relationship, that is, a certain channel may correspond to only one time slot or two or more time slots.
Step S210, acquiring a frame channel of the first GFP-F data frame.
The data transmission device acquires each frame channel for transmitting the first GFP-F data frame.
Step S220, searching a preconfigured timeslot configuration table according to the frame channel of the first GFP-F data frame, and obtaining an ODUflex frame timeslot position correspondingly allocated to the first GFP-F data frame.
And the data transmission device searches the ODUflex frame time slot position corresponding to the frame channel of the first GFP-F data frame according to a pre-configured time slot configuration table.
Step S230, output the first GFP-F data frame to the correspondingly allocated ODUflex frame timeslot position.
The data transmission device obtains a corresponding time slot position occupied by the first GFP-F data frame according to a corresponding relation between the first GFP-F frame channel configured by the time slot configuration table and the first ODUflex frame time slot, and outputs the first GFP-F data frame to the frame time slot position of the first ODUflex at the corresponding position.
The embodiment solves the problem of mapping from an ethernet data frame with any rate to an ODUflex frame, and realizes the conversion from a time-division GFP-F data frame to a space-division ODUflex data frame and the flexible scheduling from a time-division GFP-F data frame to a space-division ODUflex data frame.
Referring further to fig. 3, fig. 3 is a detailed flowchart of step S400 of the data transmission method in this embodiment, where step S400 specifically includes:
step S410A, configure a timeslot configuration table corresponding to the frame timeslot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame.
The data transmission device configures a timeslot configuration table corresponding to a frame timeslot position of a first ODUflex data frame and a frame channel of a second GFP-F data frame, where in a 10G two-layer service board, the ODUflex has 8 timeslots in total, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 8 timeslots may be configured, and 8 channels may be supported at most, and all channels occupy 8 timeslots in total. In a 40G two-layer service board, the ODUflex has 32 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 32 timeslots may be configured, and the maximum supported channel may support 32 channels, and all channels occupy 32 total timeslots. In a 100G two-layer service board, the ODUflex has 80 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 80 timeslots may be configured, and the maximum may support 80 channels, and all channels occupy 80 total timeslots. Assuming that the second GFP-F frame channel includes a road a and a channel B, and the 1 st timeslot and the 2 nd timeslot of the first ODUflex need to occupy the channel a, the 1 st timeslot and the 2 nd timeslot of the first ODUflex frame timeslot are configured to correspond to the channel a. Assuming that the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot need to occupy channel B, it is sufficient that the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot are configured to correspond to a channel B. The corresponding relationship between the time slots and the channels may be a one-to-one relationship or a many-to-one relationship, that is, a certain time slot may correspond to only one channel, and two or more time slots may correspond to one channel.
Step S410, acquire a frame timeslot position of the first ODUflex data frame.
The data transmission device acquires the slot position of each frame transmitted by the first ODUflex data frame.
Step S420, a pre-configured timeslot configuration table is searched according to the frame timeslot position of the first ODUflex data frame, and a frame channel of the second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame is obtained.
And the data transmission device searches a frame channel of the second GFP-F data frame corresponding to the frame time slot position of the first ODUflex data frame according to a pre-configured time slot configuration table.
Step S430, output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
And the data transmission device outputs the first ODUflex data frame to a correspondingly allocated frame channel of the second GFP-F data frame according to the time slot configuration table corresponding to the frame time slot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame configured by the time slot configuration table.
In this embodiment, mapping of the ODUflex data frame to the ethernet data frame is solved, and conversion from the space-division ODUflex data frame to the time-division GFP-F data frame and flexible scheduling from the space-division ODUflex data frame to the time-division GFP-F data frame are achieved.
With further reference to fig. 4, fig. 4 is a method for converting time division into space division, and in this implementation, the method for converting time division into space division includes:
and step S10, acquiring a frame channel of the first GFP-F data frame.
And the time division-to-space division device acquires each frame channel transmitted by the first GFP-F data frame.
Step S20, searching a pre-configured timeslot configuration table according to the frame channel of the first GFP-F data frame, and acquiring the timeslot position of the ODUflex frame correspondingly allocated to the first GFP-F data frame.
And the data transmission device searches the ODUflex frame time slot position corresponding to the frame channel of the first GFP-F data frame according to a pre-configured time slot configuration table.
Step S30, output the first GFP-F data frame to the correspondingly allocated ODUflex frame timeslot position.
The data transmission device obtains a corresponding time slot position occupied by the first GFP-F data frame according to a corresponding relation between the first GFP-F frame channel configured by the time slot configuration table and the first ODUflex frame time slot, and outputs the first GFP-F data frame to the frame time slot position of the first ODUflex at the corresponding position.
And the time-to-space conversion device acquires a corresponding time slot occupied by the first GFP-F data frame according to the corresponding relation between the configured first GFP-F frame channel and the first ODUflex frame time slot, reads the first GFP-F data frame written into the corresponding position of the storage module, and outputs the first GFP-F data frame to the time slot position of the corresponding first ODUflex frame time slot.
The method for converting time division to space division provided in this embodiment solves the problem of mapping an ethernet data frame with an arbitrary rate to an ODUflex frame, and realizes conversion of a time-division GFP-F data frame to an ODUflex frame with a space division and flexible scheduling of a time-division GFP-F data frame to an ODUflex frame with a space division.
With further reference to fig. 5, fig. 5 is a method for converting space division to time division, and in this implementation, the method for converting space division to time division includes:
step S40, obtain a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame.
And the space-to-time conversion device acquires the time slot position of each frame transmitted by the first ODUflex data frame.
Step S50, a pre-configured timeslot configuration table is searched according to the frame timeslot position of the first ODUflex data frame, and a frame channel of the second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame is obtained.
And the space-to-time conversion device finds out a frame channel of the second GFP-F data frame corresponding to the frame time slot position of the first ODUflex data frame according to a pre-configured time slot configuration table.
Step S60, output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
And the space-division-to-time-division conversion device outputs the first ODUflex data frame to a correspondingly allocated frame channel of the second GFP-F data frame according to a time slot configuration table corresponding to the frame time slot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame configured by the time slot configuration table.
The space-to-time conversion method provided in this embodiment solves the problem of mapping an ODUflex data frame to an ethernet data frame, and achieves conversion of an ODUflex data frame that is space-divided to a GFP-F data frame that is time-divided, and flexible scheduling of an ODUflex data frame that is space-divided to a GFP-F data frame that is time-divided.
As shown in fig. 6, the present invention further provides a data transmission device, and fig. 6 is a schematic diagram of functional modules of an embodiment of the data transmission device of the present invention, in this embodiment, the data transmission device includes:
a frame encapsulating module 10, configured to encapsulate the received first ethernet data frame into a first GFP-F data frame;
a time division conversion module 20, configured to convert the first GFP-F data frame into a first ODUflex data frame;
a forwarding module 30, configured to forward the first ODUflex data frame to a designated port of a cross matrix backplane;
a space division converting module 40, configured to convert the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
a deframing module 50, configured to deframe the second GFP-F data frame into a second ethernet data frame and output the second ethernet data frame.
A frame sealing module 10 of the data transmission device receives a first ethernet data frame transmitted by ethernet, and maps the received first ethernet data frame into a first GFP-F data frame for output in a GFP-F mode, and maps the ethernet data frame into a GFP-F data frame, where the ethernet data frames of each channel occupy the same data bus in a time division multiplexing manner, and the GFP-F data frames are mapped into serial ethernet data frames. Generally, ethernet data bearer to OTN networks employs a GFP (Generic Framing Procedure) method. GFP can transmit both variable-length packets and fixed-length blocks in byte-synchronous links, and is an advanced, simple, and flexible data signal adaptation and mapping technique. It adopts frame delimitation mode similar to ATM technology, and can transparently package various data signals of upper layer into signals which can be effectively transmitted in existent transmission network, and is favourable for interconnection and intercommunication of several operator equipments, and it introduces the concept of several service grades so as to implement statistical multiplexing of user data and QoS (Quality of service) function. The GFP standard defines two modes: the transparent transmission mode and the frame mapping mode provide a general mechanism for adapting the data stream of the high-level client to the transmission network. GFP is classified into GFP-T (GFP-Transparent, Transparent mode) and GFP-F (GFP-Frame-mapped, Frame-mapped mode). The transparent transmission mode (GFP-T) is a block-coded data stream mode, and block-coded signals with a fixed frame length can be processed in a transparent mapping manner in time without waiting for the entire frame to be received, and this adaptation is suitable for processing real-time services such as Video signals (DVB-Digital Video Broadcast) and block-coded signals such as storage services. The Frame mapping mode (GFP-F) is a PDU-ordered data stream mode, and they may be processed after receiving a complete Frame in an adaptation mode (Frame-Mapped) for mapping the entire Frame; GFP frames with different lengths and belonging to different services can be time-division multiplexed to a channel with higher speed for transmission, and the data packet multiplexing mode greatly improves the utilization rate of network bandwidth.
A time division conversion module 20 of the data transmission apparatus converts the time-divided first GFP-F data frame into a space-divided first ODUflex data frame, and further maps the GFP-F data frame to an ODUflex data frame of the OTN. Generally, ethernet data of any rate is mapped into GFP-F frames using a GFP-F mode. The GFP-F frame needs to be further mapped to an OTN frame, and in order to support an ethernet service with an arbitrary rate, the GFP-F frame needs to be mapped to a flexible rate ODU (ODUflex for short) frame. In order to distinguish Ethernet data of different channels, the data entering the GFP-F mapping module is provided with a channel number. Generally speaking, GFP-F processing is performed in a channel manner, where ethernet data of a certain channel (assumed to be a channel) is processed in a certain time period, and the ethernet data of the channel a is mapped into a GFP-F frame; after the ethernet data of the channel a is processed, the next channel (assumed to be the channel B) is processed, and the ethernet data of the channel B is mapped into a GFP-F frame. The GFP-F frame after GFP-F mapping is also divided into channels with channel number marks. The GFP-F mapped data is in a serial time division manner when viewed from time, where the time division means a certain period of time when the data of each channel uses the same data bus. The time-division data needs to be mapped into space-division ODUflex data. The term space division refers to the simultaneous existence of multiple data buses, each carrying data of different channels, where GFP-F frame data of different channels, i.e. ethernet data of different channels, is required. This requires that GFP-F frame data of different time-divided channels be converted into space-division data and exist on separate data buses.
Forwarding module 30 of the data transmission apparatus forwards the first ODUflex data frame to a corresponding port of the cross matrix backplane through the cross matrix backplane.
A space division conversion module 40 of the data transmission apparatus calls out a GFP-F data frame carried by the ODUflex signal, converts a first ODUflex data frame that is space-divided into a second GFP-F data frame that is time-divided, and maps the ODUflex data frame of the OTN to the GFP-F data frame.
The frame-decoding module 50 of the data transmission apparatus decodes the converted second GFP-F data frame into a second ethernet data frame, maps the GFP-F data frame to the ethernet data frame, the ethernet data frame becomes a GFP-F data frame after being mapped, and the GFP-F data frame of the same data bus is multiplexed into the ethernet data frame of the multipath channel in a space division multiplexing manner.
The data transmission device provided by the embodiment solves the problem of transmitting the data of the Ethernet of multiple channels at any rate on the unified OTN transmission platform, greatly reduces the types of the board cards compared with the traditional WDM, and improves the flexibility of the access, mapping, multiplexing and scheduling capabilities of the board cards and the ports; meanwhile, the cross matrix backplane supports cross scheduling of the ODUflex, and the service scheduling mode is flexible.
As shown in fig. 7, in the data transmission apparatus provided in this embodiment, the time division conversion module specifically includes:
a first configuration unit 21, configured to configure a timeslot configuration table corresponding to a frame channel of the first GFP-F data frame and a frame timeslot position of the first ODUflex data frame.
The first channel acquiring unit 22 is configured to acquire a frame channel of the first GFP-F data frame.
A first timeslot obtaining unit 23, configured to search a preconfigured timeslot configuration table according to the frame channel of the first GFP-F data frame, and obtain a timeslot position of the ODUflex frame that is correspondingly allocated to the first GFP-F data frame.
A first output unit 24, configured to output the first GFP-F data frame to the timeslot position of the ODUflex frame that is correspondingly allocated.
A first configuration unit 21 of the data transmission apparatus configures a timeslot configuration table of a first GFP-F frame channel and a first ODUflex frame timeslot, where in a 10G two-layer service board, an ODUflex totally has 8 timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 8 timeslots may be configured, and 8 channels may be supported at maximum, and all channels occupy 8 timeslots in total. In a 40G two-layer service board, the ODUflex has 32 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 32 timeslots may be configured, and the maximum supported channel may support 32 channels, and all channels occupy 32 total timeslots. In a 100G two-layer service board, the ODUflex has 80 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 80 timeslots may be configured, and the maximum may support 80 channels, and all channels occupy 80 total timeslots. Assuming that the first GFP-F frame channel includes a road a and a channel B, where the channel a needs to occupy the 1 st timeslot and the 2 nd timeslot of the first ODUflex, the channel a is configured to correspond to the 1 st timeslot and the 2 nd timeslot of the first ODUflex frame timeslot. Assuming that the channel B needs to occupy the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot, it is sufficient to configure the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot corresponding to the channel B. The corresponding relationship between the channels and the time slots may be a one-to-one relationship or a one-to-many relationship, that is, a certain channel may correspond to only one time slot or two or more time slots.
The first channel acquiring unit 22 of the data transmission apparatus acquires each frame channel for transmitting the first GFP-F data frame.
A first timeslot acquiring unit 23 of the data transmission apparatus finds out, according to a preconfigured timeslot configuration table, an ODUflex frame timeslot position allocated corresponding to a frame channel of the first GFP-F data frame.
A first output unit 24 of the data transmission apparatus obtains a corresponding timeslot position occupied by a first GFP-F data frame according to a corresponding relationship between a first GFP-F frame channel configured by a timeslot configuration table and a first ODUflex frame timeslot, and outputs the first GFP-F data frame to the frame timeslot position of the first ODUflex at the corresponding position.
The embodiment solves the problem of mapping from an ethernet data frame with any rate to an ODUflex frame, and realizes the conversion from a time-division GFP-F data frame to a space-division ODUflex data frame and the flexible scheduling from a time-division GFP-F data frame to a space-division ODUflex data frame.
As shown in fig. 8, in the data transmission apparatus provided in this embodiment, the space division converting module specifically includes:
a second configuration unit 41, configured to configure a timeslot configuration table corresponding to a frame timeslot position of the first ODUflex data frame and a frame channel of the second GFP-F data frame.
A second timeslot acquiring unit 42, configured to acquire a frame timeslot position of the first ODUflex data frame;
a second channel obtaining unit 43, configured to search a preconfigured timeslot configuration table according to the frame timeslot position of the first ODUflex data frame, and obtain a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
a second output unit 44, configured to output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
A second configuration unit 41 configured by the data transmission apparatus configures a timeslot configuration table corresponding to a frame timeslot position of a first ODUflex data frame and a frame channel of a second GFP-F data frame, where in a 10G two-layer service board, the ODUflex has 8 timeslots in total, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 8 timeslots may be configured, and 8 channels may be supported to the maximum, and all channels occupy 8 timeslots in total. In a 40G two-layer service board, the ODUflex has 32 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 32 timeslots may be configured, and the maximum supported channel may support 32 channels, and all channels occupy 32 total timeslots. In a 100G two-layer service board, the ODUflex has 80 total timeslots, each channel may be configured with 1 timeslot or more than 1 timeslot, at most 80 timeslots may be configured, and the maximum may support 80 channels, and all channels occupy 80 total timeslots. Assuming that the second GFP-F frame channel includes a road a and a channel B, and the 1 st timeslot and the 2 nd timeslot of the first ODUflex need to occupy the channel a, the 1 st timeslot and the 2 nd timeslot of the first ODUflex frame timeslot are configured to correspond to the channel a. Assuming that the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot need to occupy channel B, it is sufficient that the 45 th timeslot and the 78 th timeslot of the first ODUflex frame timeslot are configured to correspond to a channel B. The corresponding relationship between the time slots and the channels may be a one-to-one relationship or a many-to-one relationship, that is, a certain time slot may correspond to only one channel, and two or more time slots may correspond to one channel.
A second timeslot obtaining unit 42 of the data transmission apparatus obtains each frame timeslot position of the first ODUflex data frame transmission.
A second channel obtaining unit 43 of the data transmission apparatus finds out, according to a pre-configured timeslot configuration table, a frame channel of a second GFP-F data frame corresponding to a frame timeslot position of the first ODUflex data frame.
A second output unit 44 of the data transmission apparatus outputs the first ODUflex data frame to a correspondingly allocated frame channel of the second GFP-F data frame according to the timeslot configuration table corresponding to the frame timeslot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame configured by the timeslot configuration table.
In this embodiment, mapping of the ODUflex data frame to the ethernet data frame is solved, and conversion from the space-division ODUflex data frame to the time-division GFP-F data frame and flexible scheduling from the space-division ODUflex data frame to the time-division GFP-F data frame are achieved.
With further reference to fig. 9, the present invention also provides a time division to space division conversion apparatus, comprising:
a first channel obtaining module 110, configured to obtain a frame channel of a first GFP-F data frame;
a first timeslot obtaining module 120, configured to search a preconfigured timeslot configuration table according to the frame channel of the first GFP-F data frame, and obtain an ODUflex frame timeslot position correspondingly allocated to the first GFP-F data frame;
a first output module 130, configured to output the first GFP-F data frame to the timeslot position of the ODUflex frame that is correspondingly allocated.
The first channel acquiring module 110 of the time division to space division apparatus acquires each frame channel for transmitting the first GFP-F data frame.
The first timeslot acquisition module 120 of the data transmission apparatus finds out, according to a preconfigured timeslot configuration table, an ODUflex frame timeslot position allocated corresponding to a frame channel of the first GFP-F data frame.
A first output module 130 of the data transmission apparatus obtains a corresponding timeslot position occupied by a first GFP-F data frame according to a corresponding relationship between a first GFP-F frame channel configured by a timeslot configuration table and a first ODUflex frame timeslot, and outputs the first GFP-F data frame to the frame timeslot position of the first ODUflex at the corresponding position.
The device for converting time division to space division provided in this embodiment solves the problem of mapping an ethernet data frame with any rate to an ODUflex frame, and realizes conversion of a time-division GFP-F data frame to a space-division ODUflex data frame and flexible scheduling of a time-division GFP-F data frame to a space-division ODUflex data frame.
With further reference to fig. 10, the present invention also provides a space-division to time-division conversion apparatus, comprising:
a second timeslot obtaining module 210, configured to obtain a frame timeslot position of the first ODUflex data frame;
a second channel obtaining module 220, configured to search a preconfigured timeslot configuration table according to the frame timeslot position of the first ODUflex data frame, and obtain a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
a second output module 230, configured to output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
A second timeslot obtaining module 210 of the space-to-time conversion apparatus obtains the timeslot position of each frame transmitted by the first ODUflex data frame.
The second channel obtaining module 220 of the space-to-time conversion apparatus finds out a frame channel of the second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame according to the preconfigured timeslot configuration table.
The second output module 230 of the space-to-time conversion apparatus outputs the first ODUflex data frame to a correspondingly allocated frame channel of the second GFP-F data frame according to the timeslot configuration table corresponding to the frame timeslot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame configured by the timeslot configuration table.
The space-to-time conversion apparatus provided in this embodiment solves the problem of mapping an ODUflex data frame to an ethernet data frame, and achieves conversion of an ODUflex data frame that is space-divided to a GFP-F data frame that is time-divided, and flexible scheduling of an ODUflex data frame that is space-divided to a GFP-F data frame that is time-divided.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (12)

1. A data transmission method, characterized in that the data transmission method comprises:
encapsulating the received first Ethernet data frame into a first frame mapping mode GFP-F data frame;
converting the first GFP-F data frame into a first flexible rate ODUflex data frame;
forwarding the first ODUflex data frame to a designated port of a cross matrix backplane;
converting the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
deframing the second GFP-F data frame into a second Ethernet data frame and outputting the second Ethernet data frame;
the Ethernet data frames of all the channels occupy the same data bus in a time division multiplexing mode, and the first GFP-F data frame is mapped into a serial first Ethernet data frame;
the step of deframing the second GFP-F data frame into a second ethernet data frame and outputting the second ethernet data frame includes:
multiplexing the second GFP-F data frame by the same data bus in a space division multiplexing mode to generate a second Ethernet data frame of a multipath channel, and outputting the second Ethernet data frame;
wherein, the step of converting the first ODUflex data frame forwarded to the designated port into the second GFP-F data frame specifically includes:
acquiring a frame time slot position of the first ODUflex data frame;
searching a pre-configured timeslot configuration table according to the frame timeslot position of the first ODUflex data frame, and acquiring a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
and outputting the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
2. The data transmission method according to claim 1, wherein the step of converting the first GFP-F data frame into the first ODUflex data frame specifically includes:
acquiring a frame channel of the first GFP-F data frame;
searching a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and acquiring an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
and outputting the first GFP-F data frame to the correspondingly allocated ODUflex frame time slot position.
3. The data transmission method according to claim 2, wherein the step of obtaining the lane number of the first GFP-F data frame further comprises:
and configuring a timeslot configuration table corresponding to the frame channel of the first GFP-F data frame and the frame timeslot position of the first ODUflex data frame.
4. The data transmission method according to claim 1, wherein the step of obtaining the second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame includes:
and configuring a timeslot configuration table corresponding to the frame timeslot position of the first ODUflex data frame and the frame channel of the second GFP-F data frame.
5. A time division to space division conversion method, characterized in that the time division to space division conversion method comprises:
acquiring a frame channel of a first GFP-F data frame, wherein the first GFP-F data frame is a serial Ethernet data frame, and the frame channel is a channel;
searching a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and acquiring an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
and outputting the first GFP-F data frame to the correspondingly allocated ODUflex frame time slot position.
6. A method for converting space division into time division is characterized in that the method for converting space division into time division comprises the following steps:
acquiring a second GFP-F data frame corresponding to the frame time slot position of the first ODUflex data frame;
searching a pre-configured timeslot configuration table according to the frame timeslot position of the first ODUflex data frame, and acquiring a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
and outputting the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame, where the second GFP-F data frame is a serial ethernet data frame, and the frame channel is a channel.
7. A data transmission apparatus, characterized in that the data transmission apparatus comprises:
a frame encapsulating module, configured to encapsulate the received first ethernet data frame into a first GFP-F data frame;
a time division conversion module, configured to convert the first GFP-F data frame into a first ODUflex data frame;
a forwarding module, configured to forward the first ODUflex data frame to a designated port of a cross matrix backplane;
a space division conversion module, configured to convert the first ODUflex data frame forwarded to the designated port into a second GFP-F data frame;
a deframing module, configured to deframe the second GFP-F data frame into a second ethernet data frame and output the second ethernet data frame;
the frame sealing module is also used for enabling the Ethernet data frames of all the channels to occupy the same data bus in a time division multiplexing mode, and the first GFP-F data frames are mapped into serial first Ethernet data frames;
the de-framing module is further configured to multiplex, by using the same data bus, the second GFP-F data frame in a space division multiplexing manner, generate a second ethernet data frame of a multipath channel, and output the second ethernet data frame;
wherein, the space division conversion module comprises:
a second timeslot acquiring unit, configured to acquire a frame timeslot position of the first ODUflex data frame;
a second channel obtaining unit, configured to search a pre-configured timeslot configuration table according to a frame timeslot position of the first ODUflex data frame, and obtain a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
a second output unit, configured to output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame.
8. The data transmission apparatus of claim 7, wherein the time division conversion module comprises:
a first channel acquiring unit, configured to acquire a frame channel of a first GFP-F data frame;
a first time slot obtaining unit, configured to search a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and obtain an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
a first output unit, configured to output the first GFP-F data frame to the timeslot position of the ODUflex frame that is correspondingly allocated.
9. The data transmission apparatus according to claim 8, wherein the time division conversion module further comprises:
a first configuration unit, configured to configure a timeslot configuration table corresponding to a frame channel of the first GFP-F data frame and a frame timeslot position of the first ODUflex data frame.
10. The data transmission apparatus according to claim 7 or 8, wherein the space division converting module further comprises:
a second configuration unit, configured to configure a timeslot configuration table corresponding to a frame timeslot position of the first ODUflex data frame and a frame channel of the second GFP-F data frame.
11. A time division to space division conversion apparatus, characterized in that the time division to space division conversion apparatus comprises:
a first channel obtaining module, configured to obtain a frame channel of a first GFP-F data frame, where the first GFP-F data frame is a serial ethernet data frame, and the frame channel is a path of channel;
a first time slot obtaining module, configured to search a pre-configured time slot configuration table according to the frame channel of the first GFP-F data frame, and obtain an ODUflex frame time slot position correspondingly allocated to the first GFP-F data frame;
a first output module, configured to output the first GFP-F data frame to the correspondingly allocated ODUflex frame timeslot location.
12. A space-division-to-time-division conversion apparatus, characterized by comprising:
a second timeslot acquisition module, configured to acquire a frame timeslot position of the first ODUflex data frame;
a second channel obtaining module, configured to search a pre-configured timeslot configuration table according to a frame timeslot position of the first ODUflex data frame, and obtain a frame channel of a second GFP-F data frame corresponding to the frame timeslot position of the first ODUflex data frame;
a second output module, configured to output the first ODUflex data frame to the frame channel of the correspondingly allocated second GFP-F data frame, where the second GFP-F data frame is a serial ethernet data frame, and the frame channel is a path of channel.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1671244A (en) * 2004-03-19 2005-09-21 港湾网络有限公司 Method for transmitting data via back board
CN102870434A (en) * 2012-06-14 2013-01-09 华为技术有限公司 Method and apparatus for transmiting and receiving client signal
CN102893629A (en) * 2012-06-01 2013-01-23 华为技术有限公司 Method of transmitting client information in optical transmisstion network and transmission device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10320510B2 (en) * 2010-10-05 2019-06-11 Infinera Corporation TE-link bandwidth model of ODU switch capable OTN interfaces
WO2012171160A1 (en) * 2011-06-13 2012-12-20 华为技术有限公司 Method and backplane for bit width conversion from time division to space division of optical transport network backplane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1671244A (en) * 2004-03-19 2005-09-21 港湾网络有限公司 Method for transmitting data via back board
CN102893629A (en) * 2012-06-01 2013-01-23 华为技术有限公司 Method of transmitting client information in optical transmisstion network and transmission device
CN102870434A (en) * 2012-06-14 2013-01-09 华为技术有限公司 Method and apparatus for transmiting and receiving client signal

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