CN101981831B - Method, device and communication system of transmitting client data - Google Patents

Abstract

A method, device, and communication system for transmitting client data, wherein, a method for transmitting client data includes: receiving and demapping an optical channel data unit ODUk, obtaining client data of multiple channels carried by the ODUk; Delay compensation is performed on the customer data of two channels; the customer data after delay compensation is sent. In the embodiment of the present invention, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by the transmission of customer data on the OTN, and can relatively improve the transmission reliability of customer data performance; at the same time, the complexity of data processing at the OTN sender is relatively reduced.

Description

Method, device and communication system for transmitting customer data

technical field

The invention relates to the field of communication technology, in particular to a method, equipment and communication system for transmitting customer data. the

Background technique

Optical Transport Network (OTN, Optical Transport Network,) technology is considered to be the core technology of the next generation transport network. OTN has powerful tandem monitoring (TCM, Tandem Connection Monitoring) capabilities, rich operation, management, and maintenance (OAM, Operation Administration Maintenance) capabilities, and out-of-band forward error correction (FEC, Forward Error Correction) capabilities, which can realize large-scale Flexible scheduling and management of capacity services. the

The G.709 proposal formulated by the Communication Standards Department of the International Telecommunication Union (ITU-T) is mainly about the OTN frame structure and mapping standards. The standard frame structure of OTN defined in the G.709 recommendation can be shown in Figure 1. The OTN frame is a modular structure of 4080*4, including: frame alignment data (FAS, Frame Alignmem Signal), used to provide frame synchronization positioning function ; Optical Channel Transport Unit k (ODUk, Optical Channel Transport Unit-k) overhead (OH, Overhead), used to provide network management functions at the Optical Channel Transport Unit level; Optical Channel Data Unit k (ODUk, Optical Channel Data Unit-k ) overhead, used to provide maintenance and operation functions; Optical Channel Payload Unit k (OPUk, Optical Channel Payload Unit-k) overhead, used to provide business adaptation functions; OPUk payload area (Payload), also known as OTN The payload area of the frame is mainly used to provide the bearer function of the service; FEC is the forward error correction byte, which is used to provide error detection and error correction functions. Among them, the coefficient k indicates the supported bit rate and different types of OPUk, ODUk and ODUk, for example, k=1 indicates that the bit rate is 2.5Gbit/s, k=2 indicates that the bit rate is 10Gbit/s, and k=3 indicates that the bit rate is 10Gbit/s The rate is 40Gbit/s, k=4, which means the bit rate is 100Gbit/s. the

In the process of using OTN to carry Ethernet services, if the cumulative transmission delay of customer data exceeds the delay difference compensation range of Ethernet itself, customer data may be unavailable. Therefore, OTN equipment usually needs to perform certain delay compensation for customer data. . Taking the transmission of 100GE (100 Gigabit Ethernet) services using OTN as an example, the existing technology chooses that when 100GE customer data is connected to the OTN domain, the OTN data sender (source) first performs data integration and delay compensation on the 100GE customer data , and then mapped to ODU4 for transmission on OTN, and the OTN data receiving end (destination end) demaps out the 100GE client data carried by ODU4, and usually does not perform delay compensation on it. the

In the process of realizing the present invention, the inventors found that in the prior art, the delay compensation operation is performed on 100GE client data at the OTN source end, but the OTN destination end usually does not perform delay compensation, because the transmission of client data on the OTN is not considered The possible delay may lead to the unavailability of customer data, and the reliability of transmitting customer data in the existing technical solutions is relatively low. the

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a method, device and communication system for transmitting customer data, which can relatively improve the reliability of customer data transmission. the

In order to solve the above technical problems, the technical solutions provided in the embodiments of the present invention are as follows:

A method of transferring customer data comprising:

Receiving and demapping the optical channel data unit ODUk to obtain multiple channels of customer data carried by the ODUk; performing delay compensation on the obtained multiple channels of customer data; sending the delay compensated customer data. Wherein, the delay compensation of the obtained customer data of multiple channels includes: if the obtained customer data of multiple channels is customer data of multiple physical channels, then decomposing the obtained customer data of multiple physical channels Multiplex the customer data of multiple virtual channels; detect the alignment word code blocks in the customer data of multiple virtual channels that are demultiplexed, and obtain the delay information of the customer data of multiple virtual channels respectively; according to the obtained multiple The delay information of the customer data of the virtual channel is used to compensate the delay of the customer data of multiple virtual channels that are demultiplexed; if the customer data of multiple channels obtained is the customer data of multiple virtual The delay information of the customer data of a plurality of virtual channels; according to the delay information of the obtained customer data of a plurality of virtual channels, delay compensation is performed on the obtained customer data of a plurality of virtual channels. the

A transmission network node, comprising:

The receiving analysis module is used to receive and demap ODUk, and obtain the customer data of multiple channels carried by ODUk; the delay compensation module is used to obtain the customer data of multiple channels obtained by the receiving analysis module as multiple physical channels. During customer data, demultiplex the customer data of multiple physical channels obtained by the receiving analysis module into the customer data of multiple virtual channels; detect the alignment code blocks in the customer data of multiple virtual channels that are demultiplexed , obtain the delay information of customer data of multiple virtual channels respectively; according to the delay information of customer data of multiple virtual channels obtained, perform delay compensation for the customer data of multiple virtual channels demultiplexed into; When the customer data of multiple channels obtained by the receiving and analyzing module is the customer data of multiple virtual channels, the delay information of the customer data of multiple virtual channels is respectively obtained; according to the delay information of the customer data of multiple virtual channels acquired performing delay compensation on the client data of the plurality of virtual channels obtained by the receiving and analyzing module; the first sending module is configured to send the client data after the delay compensation is performed by the delay compensating module. the

A communication system comprising:

The first node is used to acquire customer data of multiple channels; the acquired customer data of multiple channels is mapped to ODUk and sent; the second node is used to receive and demap ODUk, and obtain multiple physical channels carried by ODUk Customer data; demultiplex the obtained customer data of multiple physical channels into customer data of multiple virtual channels; detect the alignment code blocks in the customer data of multiple virtual channels obtained by demultiplexing, and obtain multiple virtual channels respectively The delay information of the customer data of the channel; according to the delay information of the customer data of the multiple virtual channels obtained, the delay compensation is performed on the customer data of the multiple virtual channels demultiplexed; the customer after the delay compensation is sent data; or, the second node is used to receive and demap ODUk, and obtain customer data of multiple virtual channels carried by ODUk; obtain delay information of customer data of multiple virtual channels respectively; according to the obtained multiple virtual channels Delay information of customer data, performing delay compensation on the acquired customer data of multiple virtual channels; sending the customer data after delay compensation. the

It can be seen from the above technical solution that the technical solution of the embodiment of the present invention has the following advantages: the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate customer data transmission on the OTN. The possible delay can relatively improve the transmission reliability of customer data; at the same time, it can relatively reduce the complexity of data processing at the OTN sending end. the

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention and the prior art, the accompanying drawings that need to be used in the description of the embodiments and the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort. the

Fig. 1 is a kind of OTN frame structure schematic diagram that prior art provides;

Fig. 2 is a flow chart of a method for transmitting customer data provided by Embodiment 1 of the present invention;

Fig. 3 is a flow chart of a method for transmitting customer data provided by Embodiment 2 of the present invention;

Fig. 4 is a flow chart of a method for transmitting customer data provided by Embodiment 3 of the present invention;

Fig. 5 is a flow chart of a method for transmitting customer data provided by Embodiment 4 of the present invention;

Fig. 6 is a flow chart of a method for transmitting customer data provided by Embodiment 5 of the present invention;

Fig. 7 is a flow chart of a method for transmitting customer data provided by Embodiment 6 of the present invention;

Fig. 8 is a flow chart of a method for transmitting customer data provided by Embodiment 7 of the present invention;

FIG. 9 is a schematic structural diagram of a transport network node provided in Embodiment 8 of the present invention;

FIG. 10 is a schematic structural diagram of a transport network node provided in Embodiment 9 of the present invention;

FIG. 11 is a schematic structural diagram of a communication system provided by Embodiment 10 of the present invention;

Fig. 12 is a schematic structural diagram of another communication system provided by an embodiment of the present invention;

Fig. 13 is a schematic structural diagram of another communication system provided by an embodiment of the present invention;

Figure 14 is a schematic diagram of another implementation of transmitting customer data provided by an embodiment of the present invention;

Fig. 15 is a schematic diagram of another implementation manner of transmitting customer data provided by an embodiment of the present invention. the

Detailed ways

Embodiments of the present invention provide a method, device, and communication system for transmitting client data. In the process of transmitting client data, the sending end (source end) does not perform delay compensation, and the receiving end (destination end) performs delay compensation, which can Relatively improve the transmission reliability of customer data. the

In the following, specific examples will be used to describe in detail respectively. the

Referring to Fig. 2, a first embodiment of a method for transmitting customer data in an embodiment of the present invention may include:

210. Receive and demap the ODUk to obtain customer data of multiple channels carried by the ODUk. the

In an application scenario, the sending end may acquire customer data of multiple channels, map the acquired customer data of multiple channels to one or more ODUk and send it. The receiving end can receive and demap one or more ODUk sent by the sending end, and obtain customer data of multiple physical channels and/or multiple virtual channels carried by one or more ODUk. the

It can be understood that the sending end can map the client data of multiple channels to the ODUk in various ways, and the receiving end can demap the received ODUk in various ways corresponding thereto, which is not limited in the present invention. the

For example, if the OTN bearer is used to transmit 100GE services, the sending end can obtain customer data of 10 physical channels of a 100 Gigabit Attachment Unit Interface (CAUI, 100 Gigabit Attachment Unit Interface) from an Ethernet device or other devices. the

In one application scenario, the sender can demultiplex the acquired customer data of 10 physical channels of CAUI into customer data of 20 virtual channels, map the customer data of 20 virtual channels to 80 time slots of ODU4 and send. The receiving end can receive and demap the 80 time slots of the ODU4 sent by the OTN data sending end, and obtain the client data of the 20 virtual channels carried by the ODU4. the

In another application scenario, the sender can directly map the acquired customer data of 10 physical channels of CAUI to 80 time slots of ODU4 and send it. The receiving end can receive and demap the 80 time slots of ODU4 sent by the sending end, and obtain the customer data of 10 physical channels of CAUI carried by ODU4. the

In another application scenario, the sender can map the customer data of 10 physical channels of CAUI to ODU2e-10v, split ODU2e-10v into 10 ODU2e and send them, and the sender can also directly map the 10 physical channels of CAUI The customer data is mapped to 10 ODU2e and sent. The receiving end can receive and demap 10 ODU2e sent by the sending end, and obtain customer data of CAUI 10 physical channels carried by 10 ODU2e. the

220. Perform delay compensation for the acquired customer data of multiple channels. the

In one application scenario, if the client data obtained by the receiving end is client data of multiple physical channels, the client data of multiple physical channels obtained is demultiplexed into client data of multiple virtual channels; Detect the alignment code blocks in the customer data of multiple virtual channels that are demultiplexed, and obtain the delay information of the customer data of multiple virtual channels respectively; according to the delay information of the customer data of multiple virtual channels obtained, the Demultiplexing the customer data into multiple virtual channels for delay compensation. the

If the customer data of multiple channels obtained by the receiving end is the customer data of multiple virtual channels, the delay information of the customer data of multiple virtual channels is obtained respectively; according to the delay information of the customer data of multiple virtual channels obtained, Delay compensation is performed on the acquired client data of multiple virtual channels. the

For example, if OTN is used to carry 100GE services, in an application scenario, the sender can demultiplex the customer data of 10 physical channels of CAUI into customer data of 20 virtual channels, and obtain 20 virtual channels respectively The delay information of the client data of 20 virtual channels is carried in the ODUk overhead area. The receiving end can demap the ODUk overhead area to obtain the client data delay information of the 20 virtual channels carried by it; and perform delay compensation for the client data of the 20 virtual channels according to the obtained delay information. the

In another application scenario, the receiving end can demultiplex the obtained customer data of 10 physical channels of CAUI into customer data of 20 virtual channels; detect the alignment code blocks in the customer data of 20 virtual channels, respectively Delay information of customer data of the 20 virtual channels is obtained; and delay compensation is performed on the obtained customer data of the 20 virtual channels according to the obtained delay information of the customer data of the 20 virtual channels. the

230. Send the customer data after delay compensation. the

In one application scenario, the receiver can multiplex the compensated customer data of 20 virtual channels into customer data of CAUI 10 physical channels, and send the multiplexed CAUI 10 to Ethernet devices or other devices customer data for physical channels. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, The transmission reliability of customer data can be relatively improved; meanwhile, the complexity of data processing at the OTN sending end is relatively reduced. the

Example two

For ease of understanding, this embodiment uses OTN to transmit 100GE services, node A (source end) acquires delay information, and node B (destination end) performs delay compensation as an example for specific description. the

Referring to Fig. 3, a method for transmitting customer data according to Embodiment 2 of the present invention may include:

301. Node A acquires customer data of ten 10G physical channels of CAUI. the

In an application scenario, node A can obtain customer data of 10 physical channels of CAUI from the Ethernet device, and each physical channel of CAUI is a 10G physical channel. the

302. Node A demultiplexes the acquired customer data of 10 10G physical channels into customer data of 20 virtual channels. the

In one application scenario, node A can perform bit demultiplexing on customer data obtained from 10 10G physical channels of the Bagibit connection unit interface, and restore it to customer data on 20 virtual channels. the

303. Node A detects the alignment code blocks in the client data of the 20 virtual channels, and obtains the delay information of the client data of the 20 virtual channels respectively. the

The customer data of each virtual channel generally includes a data code block and various control word code blocks (if the code block size is 66B, it can be called a 66B code block), and the alignment word code block is one of the control word code blocks. Alignment code blocks are usually inserted periodically between other code blocks, which can indicate the delay, and each virtual channel corresponds to a different coded alignment code block. the

In one application scenario, node A can perform bypass monitoring on the alignment code blocks in the customer data of 20 virtual channels, respectively, and obtain delay information of the 20 virtual channels. the

304. Node A maps the client data of the 20 virtual channels to 80 time slots of the ODU4 respectively, and maps the delay information of the client data of the 20 virtual channels to the overhead area of the ODU4 and sends it. the

In one application scenario, node A can map the demultiplexed customer data of 20 virtual channels to 80 time slots of ODU4, and the customer data of each virtual channel can be mapped to any 4 time slots of ODU4 middle. Node A can map client data of 20 virtual channels to 80 time slots of ODU4 in a unified control manner. Node A may also map the acquired delay information of the 20 virtual channels to the overhead area of the ODU4, and send the ODU4. the

305. The node B receives and demaps the ODU4, and obtains the client data of the 20 virtual channels carried by the ODU4 and the delay information of the client data of the 20 virtual channels. the

In an application scenario, Node B may receive the ODU4 sent by Node A, and demap 80 time slots of the received ODU4 to obtain customer data of 20 virtual channels carried by it. the

The node B can also demap the received overhead area of the ODU4, and obtain the delay information of the client data of the 20 virtual channels carried by it, etc. the

306. The node B performs delay compensation on the obtained client data of the 20 virtual channels according to the obtained delay information of the 20 virtual channels. the

307. Node B multiplexes the customer data of 20 virtual channels after delay compensation into customer data of 10 physical channels of CAUI and sends it. the

In an application scenario, node A can multiplex the customer data of 20 virtual channels after delay compensation into customer data of 10 10G physical channels of CAUI, and can send the multiplexed data to Ethernet devices or other devices Customer data of 10 10G physical channels of CAUI. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, and can Relatively improve the reliability of customer data transmission; at the same time relatively reduce the complexity of data processing at the OTN sender; simplify the process of customer data transmission as a whole. the

Furthermore, the sending end demultiplexes the customer data of the 10 10G physical channels of CAUI and obtains the delay information, which relatively shares the data processing load of the receiving end. the

Embodiment three

In this implementation, node A (source end) maps customer data of 10 10G physical channels of CAUI to ODU4, and node B (destination end) performs delay compensation as an example for specific description. the

Referring to Fig. 4, a method for transmitting customer data according to Embodiment 3 of the present invention may include:

401. Node A obtains customer data of ten 10G physical channels of CAUI. the

402. Node A maps customer data of ten 10G physical channels to ODU4 respectively and sends them. the

In an application scenario, node A can asynchronously map the acquired customer data of 10 10G physical channels of CAUI to ODU4 in an interleaved manner of n bits and send it. the

403. Node B receives and demaps ODU4, and obtains customer data of ten 10G physical channels of CAUI carried by ODU4. the

In one application scenario, Node B can receive the ODU4 sent by Node A, and demap the OPU4 payload area of the received ODU4, and obtain the customer data of the CAUI 10 10G physical channels carried by it. the

404. The node B demultiplexes the acquired customer data of 10 10G physical channels into customer data of 20 virtual channels. the

In one application scenario, node A performs bit demultiplexing on the acquired customer data of 10 10G physical channels of CAUI, and restores it into customer data of 20 virtual channels. the

405. The node B detects the alignment code blocks in the client data of the 20 virtual channels, and obtains the delay information of the client data of the 20 virtual channels respectively. the

In one application scenario, node B can first synchronize the 66B code blocks of the customer data of the 20 virtual channels, and then detect the alignment code blocks in the customer data of the 20 virtual channels, and obtain the customers of the 20 virtual channels respectively. Data delay information. the

406. The node B performs delay compensation for the obtained client data of the 20 virtual channels according to the obtained delay information of the 20 virtual channels. the

407. Node B multiplexes the client data of 20 virtual channels after delay compensation into client data of 10 physical channels and sends it. the

In one application scenario, step 407 may be the same as step 307, and the specific execution process of step 407 may refer to the related description in step 307, which will not be repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, and can Relatively improve the reliability of customer data transmission; at the same time relatively reduce the complexity of data processing at the OTN sender; simplify the process of customer data transmission as a whole. the

Embodiment four

In this implementation, node A (source) maps customer data of 10 10G physical channels of CAUI to 80 time slots of ODU4, and node B (destination) performs delay compensation as an example for specific description. the

Referring to Fig. 5, a method for transmitting customer data according to Embodiment 4 of the present invention may include:

501. Node A acquires customer data of ten 10G physical channels of CAUI. the

502. Node A maps the acquired customer data of the 10 10G physical channels of CAUI to 80 time slots of ODU4 and sends it. the

In one application scenario, node A can map the acquired customer data of 10 10G physical channels of CAUI to 80 time slots of ODU4, and the customer data of each 10G physical channel can be mapped to any 8 time slots of ODU4 middle. Node A can map customer data of 10 10G physical channels to 80 time slots of ODU4 in a unified control manner. the

503. The node B receives and demaps the ODU4, and obtains customer data of ten 10G physical channels of the CAUI carried by the ODU4. the

In one application scenario, Node B can receive the ODU4 sent by Node A, and demap the 80 time slots of the received ODU4, and obtain the customer data of 10 10G physical channels of CAUI carried by it. the

504. The node B demultiplexes the obtained customer data of 10 10G physical channels of CAUI into customer data of 20 virtual channels. the

In one application scenario, node A performs bit demultiplexing on the acquired customer data of 10 10G physical channels of CAUI, and restores it into customer data of 20 virtual channels. the

505. The node B detects the alignment code blocks in the client data of the 20 virtual channels, and obtains delay information of the client data of the 20 virtual channels respectively. the

In an application scenario, step 505 can be the same as step 405, and the specific execution process of step 505 can refer to the relevant description in step 405, and will not be repeated here. the

506. The node B performs delay compensation for the obtained client data of the 20 virtual channels according to the obtained delay information of the 20 virtual channels. the

507. The node B multiplexes the customer data of the 20 virtual channels after the delay compensation into the customer data of 10 10G physical channels of CAUI and sends them. the

In one application scenario, step 507 may be the same as step 307, and the specific execution process of step 507 may refer to the relevant description in step 307, which will not be repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, and can Relatively improve the reliability of customer data transmission; at the same time relatively reduce the complexity of data processing at the OTN sender; simplify the process of customer data transmission as a whole. the

Embodiment five

In this implementation, node A (source) maps customer data of 10 10G physical channels of CAUI to ODU2e-10v, and transmits it through 10 ODU2e, and node B (destination) performs delay compensation as an example for specific explanation. the

Referring to Figure 6, a method for transmitting customer data according to Embodiment 5 of the present invention may include:

601. Node A acquires customer data of ten 10G physical channels of CAUI. the

602. Node A maps the acquired customer data of the ten 10G physical channels of CAUI to ODU2e-10v respectively. the

Among them, ODU2e-10v is a cascade structure, and ODU2e-10v can be split into 10 ODU2e. the

603. Node A splits ODU2e-10v into 10 ODU2e and sends them. the

604. Node B receives and demaps 10 ODU2e, and obtains customer data of 10 10G physical channels of CAUI carried by 10 ODU2e. the

In an application scenario, Node B can receive 10 ODU2e sent by Node A, and demap the received 10 ODU2e, and obtain customer data of 10 10G physical channels of CAUI carried by it. the

605. The node B demultiplexes the acquired customer data of 10 10G physical channels of CAUI into customer data of 20 virtual channels. the

606. The node B detects the alignment code blocks in the client data of the 20 virtual channels, and obtains delay information of the client data of the 20 virtual channels respectively. the

In an application scenario, step 606 may be the same as step 405, and the specific execution process of step 606 may refer to related descriptions in step 405, and details are not repeated here. the

607. The node B performs delay compensation on the obtained client data of the 20 virtual channels according to the obtained delay information of the 20 virtual channels. the

608. The node B multiplexes the customer data of the 20 virtual channels after the delay compensation into the customer data of 10 10G physical channels of CAUI and sends them. the

In one application scenario, step 608 may be the same as step 307, and the specific execution process of step 608 may refer to the relevant description in step 307, which will not be repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, and can Relatively improve the reliability of customer data transmission; at the same time relatively reduce the complexity of data processing at the OTN sender; simplify the process of customer data transmission as a whole. the

Embodiment six

In this implementation, node A (source) maps customer data of 10 10G physical channels of CAUI to 10 ODU2e, and node B (destination) performs delay compensation as an example for specific explanation. the

Referring to Figure 7, a method for transmitting customer data according to Embodiment 6 of the present invention may include:

701. Node A obtains customer data of ten 10G physical channels of CAUI. the

702. Node A maps the acquired customer data of the 10 10G physical channels of CAUI to 10 ODU2e respectively and sends them. the

703. Node B receives and demaps 10 ODU2e, and obtains customer data of 10 10G physical channels of CAUI carried by 10 ODU2e. the

In an application scenario, Node B can receive 10 ODU2e sent by Node A, and demap the received 10 ODU2e, and obtain customer data of 10 10G physical channels of CAUI carried by it. the

704. The node B demultiplexes the acquired customer data of 10 10G physical channels of CAUI into customer data of 20 virtual channels. the

705. The node B detects the alignment code blocks in the client data of the 20 virtual channels, and obtains delay information of the client data of the 20 virtual channels respectively. the

In an application scenario, step 705 may be the same as step 405, and the specific execution process of step 705 may refer to related descriptions in step 405, and details are not repeated here. the

706. The node B performs delay compensation on the obtained client data of the 20 virtual channels according to the obtained delay information of the 20 virtual channels. the

707. Node B multiplexes the customer data of 20 virtual channels after delay compensation into customer data of 10 physical channels of CAUI and sends it. the

In one application scenario, step 707 may be the same as step 307, and the specific execution process of step 707 may refer to the related description in step 307, which will not be repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, and can Relatively improve the reliability of customer data transmission; at the same time relatively reduce the complexity of data processing at the OTN sender; simplify the process of customer data transmission as a whole. the

Embodiment seven

Based on any of the above embodiments, in this implementation, node A (source end) can also map the client data of N physical channels independent of each other to ODUk, and node B (destination end) forwards the client data of N physical channels as example for specific description. the

Referring to Figure 8, a method for transmitting customer data according to Embodiment 6 of the present invention may include:

801. Node A obtains customer data of N physical channels that are independent of each other. the

In an application scenario, node A may also obtain customer data of 10 mutually independent physical channels, wherein the service type of the customer data of the above 10 mutually independent physical channels may include at least one of the following 10G CBR services: 10GE/FC service, 10G STM-64 service, etc., the present invention is not limited thereto. the

802. Node A maps the acquired client data of N physical channels independent of each other to ODUk and sends it. the

In an application scenario, node A can obtain 10G CBR service data of 10 independent physical channels and map them to 10 ODU2e or ODU2 respectively and send them. the

In another application scenario, node A can also obtain 10 GCBR service data of 10 independent physical channels and map them to 80 time slots of ODU4 and send them. The 10G CBR service data of each physical channel is mapped to 8 timeslots of ODU4. time slots. the

803. Node B receives and demaps the ODUk, and obtains customer data of N physical channels independently carried by the ODUk. the

In an application scenario, Node B can receive 10 ODU2e or ODU2 sent by Node A, and demap 10G CBR service data of 10 independent physical channels carried by 10 ODU2e or ODU2. the

In another application scenario, node A can also receive ODU4 sent by node A, and demap 80 time slots of ODU4 to obtain 10G CBR service data of 10 independent physical channels carried by it. the

804. Node B recovers clock information of client data of N physical channels that are independent of each other, and sends client data of N physical channels according to clock information of client data of N channels. the

In an application scenario, Node B can restore the clock information of 10G CBR service data of 10 physical channels, and send 10G CBR service data of 10 physical channels according to the clock information of 10G CBR service data of each channel. the

It can be seen from the above technical solution that in this example, while carrying and transmitting 100GE services, node A and node B can also compatiblely carry 10G CBR services, which is more practical. the

Embodiment eight

Correspondingly, an embodiment of the present invention also provides a transport network node. Referring to FIG. 9 , a transport network node according to Embodiment 8 of the present invention may include: a data acquisition module 910 and a mapping sending module 920 . the

Among them, the data acquisition module 910 is configured to acquire customer data of multiple channels. the

In an application scenario, the data obtaining module 910 may obtain customer data of 10 physical channels of the CAUI from an Ethernet device or other devices. the

The mapping sending module 920 is configured to map and send the customer data of multiple channels acquired by the data acquiring module 910 to the ODUk. the

It can be understood that the mapping sending module 920 may use multiple methods to obtain the customer data of multiple channels obtained by the data obtaining module 910 to the ODUk. the

In an application scenario, the mapping sending module 920 may include:

The demultiplexing sub-module 921 is used to demultiplex the customer data of 10 physical channels of CAUI acquired by the data acquisition module 910 into customer data of 20 virtual channels. the

The delay acquisition sub-module 922 is used to detect the alignment code blocks in the client data of the 20 virtual channels demultiplexed by the demultiplexing sub-module 921, and obtain the delay information of the client data of the 20 virtual channels respectively. the

The mapping and sending sub-module 923 is used to map the customer data demultiplexed by the demultiplexing sub-module 921 into 20 virtual channels into 80 time slots of ODU4, and obtain the time slots of the 20 virtual channels obtained by the delay acquisition sub-module 922 The delay information of client data is mapped to the overhead area of ODU4 and sent. the

In another application scenario, the mapping sending module 920 can be used to asynchronously map and send the customer data of the 10 physical channels of the CAUI acquired by the data acquiring module 910 to the ODU4 in an n-bit interleaved manner. the

In another application scenario, the mapping sending module 920 can be used to map the customer data of the CAUI 10 physical channels acquired by the data acquisition module 910 to ODU2e-10v; split ODU2e-10v into 10 ODU2e and send them. the

In another application scenario, the mapping sending module 920 can be used to map the customer data of the 10 physical channels of the CAUI acquired by the data obtaining module 910 to 10 ODU2e and send them. the

The receiving end can receive and map the ODUk, obtain the client data carried by the ODUk, and perform delay compensation for the obtained client data. the

In an application scenario, the data obtaining module 910 may also be used to obtain 10G CBR service data of 10 independent physical channels from an Ethernet device or other devices. the

The mapping sending module 920 can also be used to map and send the 10G CBR service data of 10 independent physical channels obtained by the data obtaining module 910 to 10 ODU2 or ODU2e. the

The mapping sending module 920 can also be used to map the 10G CBR service data of 10 independent physical channels obtained by the data obtaining module 910 into 80 time slots of the ODU4 and send them. the

The receiving end can receive and demap the ODUk, obtain the 10G CBR service data of the 10 independent physical channels carried by the ODUk, recover the clock information of the customer data of the 10 independent 10G physical channels obtained respectively, and The clock information of the customer data of the 10 10G physical channels sends the customer data of the 10 10G physical channels. the

It can be understood that the transport network node described in this embodiment may be node A as in Embodiments 2 to 7, and the functions of each functional module thereof may be implemented according to the method in Embodiments 2 to 7. The specific implementation process Reference may be made to the relevant descriptions in Embodiments 2 to 7, and details are not repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, It can relatively improve the reliability of customer data transmission; at the same time, it can relatively reduce the complexity of data processing at the OTN sending end; and simplify the process of customer data transmission as a whole. the

Embodiment nine

Correspondingly, an embodiment of the present invention also provides a transport network node, please refer to FIG. 10 , a transport network node in Embodiment 9 of the present invention may include: a receiving analysis module 1010, a delay compensation module 1020 and a first sending module 1030. the

Wherein, the receiving and analyzing module 1010 is configured to receive and demap the ODUk, and obtain customer data of multiple channels carried by the ODUk. the

It can be understood that the sending end can map the client data to the ODUk in various ways, and the receiving and analyzing module 1010 can demap the received ODUk in various ways corresponding thereto, which is not limited in the present invention. the

The delay compensation module 1020 is configured to perform delay compensation for the customer data of multiple channels obtained by the receiving analysis module 1010 . the

In one application scenario, the delay compensation module 1020 can be specifically configured to receive multiple physical The customer data of the channel is demultiplexed into the customer data of multiple virtual channels; the alignment word code blocks in the customer data of the multiple virtual channels are detected, and the delay information of the customer data of the multiple virtual channels is respectively obtained; According to the acquired delay information of the client data of the multiple virtual channels, delay compensation is performed on the demultiplexed client data of the multiple virtual channels. the

When the customer data of multiple channels obtained by the receiving analysis module 1010 is the customer data of multiple virtual channels, the delay information of the customer data of multiple virtual channels is obtained respectively; according to the delay of the customer data of multiple virtual channels acquired information, and perform delay compensation on the customer data of multiple virtual channels obtained by the receiving analysis module 1010. the

The first sending module 1030 is configured to send the customer data after the delay compensation is performed by the delay compensation module 1020 . the

Taking the transmission of 100GE services as an example, in an application scenario, the receiving and analyzing module 1010 can be used to receive and demap ODU4, and obtain the customer data of 20 virtual channels carried by 80 time slots of ODU4 and the overhead area of ODU4 Delay information of customer data carried by 20 virtual channels. the

Delay compensation module 1020 may include:

The delay compensation sub-module 1023 is configured to perform delay compensation for the client data of the 20 virtual channels obtained by the receiving and analyzing sub-module 1010 according to the delay information of the client data of the 20 virtual channels obtained by the receiving and analyzing module 1010 . the

In an application scenario, the receiving and parsing module 1010 can be used to receive and demap the ODU4, and obtain customer data of 10 physical channels of the CAUI carried by the ODU4. the

In an application scenario, the receiving and parsing module can be used to receive and demap 10 ODU2e, and obtain customer data of 10 physical channels of CAUI carried by 10 ODU2e respectively. the

The delay compensation module 1020 may include: a demultiplexing submodule 1021 , a delay acquisition submodule 1022 and a delay compensation submodule 1023 . the

Wherein, the demultiplexing sub-module 1021 is used to demultiplex the customer data of 10 physical channels of the CAUI obtained by the receiving analysis module 1010 into customer data of 20 virtual channels. the

The delay acquisition sub-module 1022 is used to detect the alignment code blocks in the client data of the 20 virtual channels demultiplexed by the demultiplexing sub-module 1021, and obtain the delay information of the client data of the 20 virtual channels respectively. the

The delay compensation sub-module 1023 is configured to perform delay compensation on the obtained client data of the 20 virtual channels according to the delay information of the client data of the 20 virtual channels obtained by the delay obtaining sub-module 1022 . the

The first sending module 1030 can multiplex the customer data of 20 virtual channels after the delay compensation sub-module 1023 performs delay compensation into the customer data of 10 physical channels of CAUI and send it. the

In an application scenario, the receiving and parsing module 1010 may also be used to receive and demap the ODUk to obtain customer data of 10 mutually independent 10G physical channels carried by the ODUk. the

Transport network nodes can also include:

The second sending module 1040 is configured to respectively recover the clock information of the customer data of the ten mutually independent 10G physical channels obtained by the receiving and analyzing module 1010, and send 10 customer data according to the clock information of the ten mutually independent 10G physical channels. Customer data of 10G physical channel. the

It can be understood that the transport network node described in this embodiment may be the Node B in Embodiments 2 to 7, and the functions of each functional module thereof may be implemented according to the methods in Embodiments 2 to 7. The specific implementation process Reference may be made to the relevant descriptions in Embodiments 2 to 7, and details are not repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate the possible delay caused by the transmission of customer data on the OTN, The transmission reliability of customer data can be relatively improved; at the same time, the complexity of data processing at the OTN sending end is relatively reduced; and the processing process of customer data transmission is simplified as a whole. the

Embodiment ten

Correspondingly, an embodiment of the present invention also provides a communication system. Referring to FIG. 11 , a communication system according to Embodiment 10 of the present invention may include a first node 1110 and a second node 1120 . the

Wherein, the first node 1110 and the first node 1120 are connected in a communicable manner. the

The first node 1110 is configured to acquire customer data of multiple channels; map the acquired customer data of multiple channels to ODUk and send it. the

The second node 1120 is configured to receive and demap the ODUk, obtain client data of multiple channels carried by the ODUk; perform delay compensation on the acquired client data of multiple channels; and send the client data after delay compensation. the

In an application scenario, the first node 1110 may directly map the acquired customer data of multiple physical channels to the ODUk and send it. The second node can be specifically used to receive and demap ODUk, obtain customer data of multiple physical channels carried by ODUk; demultiplex the obtained customer data of multiple physical channels into customer data of multiple virtual channels; detect and demultiplex Using the aligned word code blocks in the customer data of multiple virtual channels to obtain the delay information of the customer data of multiple virtual channels respectively; according to the delay information of the customer data of multiple virtual channels obtained, demultiplex Perform delay compensation on the customer data of multiple virtual channels formed; send the customer data after delay compensation. the

In another application scenario, the first node 1110 demultiplexes the acquired client data of multiple physical channels into client data of multiple virtual channels, maps them to the ODUk, and sends them. The second node 1020 can be specifically configured to receive and demap ODUk, obtain customer data of multiple virtual channels carried by ODUk; obtain delay information of customer data of multiple virtual channels respectively; Delay information of data, performing delay compensation on the obtained customer data of multiple virtual channels; sending the customer data after delay compensation. the

Taking the first node 1110 and the second node 1120 as an example to carry and transmit 100GE services, in an application scenario, the first node 1110 can specifically be used to acquire customer data of 10 physical channels of CAUI; the acquired 10 physical channels The customer data of 20 virtual channels are demultiplexed into customer data of 20 virtual channels; the alignment word code blocks in the customer data of 20 virtual channels are detected, and the delay information of the customer data of 20 virtual channels are respectively obtained; The client data is mapped to 80 time slots of ODU4, and the delay information of client data of 20 virtual channels is mapped to the overhead area of ODU4 and sent. the

The second node 1120 may be specifically configured to receive and demap the ODU4, and obtain the client data of the 20 virtual channels carried by the 80 time slots of the ODU4 and the delay information of the client data of the 20 virtual channels carried by the overhead area of the ODU4; According to the delay information of the obtained customer data of the 20 virtual channels, delay compensation is performed on the obtained customer data of the 20 virtual channels; the compensated customer data of the 20 virtual channels is multiplexed into 10 physical channels of CAUI customer data and send it. the

In another application scenario, the first node 1110 can be specifically used to acquire customer data of 10 physical channels of the CAUI; map the acquired customer data of 10 physical channels to ODU4 and send it. the

The second node 1120 can specifically be used to receive and demap ODU4, obtain customer data of 10 physical channels of CAUI carried by ODU4; demultiplex the obtained customer data of 10 physical channels into customer data of 20 virtual channels; Detect the alignment code blocks in the customer data of 20 virtual channels, and obtain the delay information of the customer data of the 20 virtual channels respectively; according to the delay information of the customer data of the 20 virtual channels obtained, the The customer data of the channel is compensated for delay; the customer data of the 20 virtual channels after compensation is multiplexed into the customer data of 10 physical channels of CAUI and sent. the

In another application scenario, the first node 1110 can specifically be used to acquire customer data of 10 physical channels of CAUI; map the acquired customer data of 10 physical channels to ODU2e-10v; split ODU2e-10v into 10 ODU2e and send. the

The second node 1120 can specifically be used to receive and demap 10 ODU2e, obtain customer data of CAUI 10 physical channels carried by 10 ODU2e respectively; demultiplex the obtained customer data of 10 physical channels into 20 virtual channel customer data; detect the alignment word code blocks in the customer data of 20 virtual channels, respectively obtain the delay information of the customer data of 20 virtual channels; according to the delay information of the customer data of the 20 virtual channels obtained, to The obtained customer data of the 20 virtual channels is compensated for delay; the compensated customer data of the 20 virtual channels is multiplexed into the customer data of 10 physical channels of CAUI and sent. the

In another application scenario, the first node 1110 can be specifically used to acquire customer data of 10 physical channels of the CAUI; map the acquired customer data of 10 physical channels to 10 ODU2e and send them. the

The second node 1120 can specifically be used to receive and demap 10 ODU2e, obtain customer data of CAUI 10 physical channels carried by 10 ODU2e respectively; demultiplex the obtained customer data of 10 physical channels into 20 virtual channel customer data; detect the alignment word code blocks in the customer data of 20 virtual channels, respectively obtain the delay information of the customer data of 20 virtual channels; according to the delay information of the customer data of the 20 virtual channels obtained, to The obtained customer data of the 20 virtual channels is compensated for delay; the compensated customer data of the 20 virtual channels is multiplexed into the customer data of 10 physical channels of CAUI and sent. the

In an application scenario, the first node 1110 may also be used to acquire customer data of 10 mutually independent 10G physical channels; map the acquired customer data of 10 physical channels to ODUk and send it. the

The second node 1120 can also be used for receiving and demapping the ODUk, obtaining customer data of 10 mutually independent 10G physical channels carried by the ODUk; respectively recovering the clock information of the customer data of the 10 10G physical channels obtained, and Send the customer data of the ten 10G physical channels according to the clock information of the customer data of the ten 10G physical channels. the

It can be understood that the first node 1110 in this embodiment may be node A in embodiments 2 to 7, and the second node 1120 in this embodiment may be node B in embodiments 2 to 7. The functions of the first node 1110 and the second node 1120 can be specifically implemented according to the methods in Embodiments 2 to 7, and the specific implementation process can refer to the relevant descriptions in Embodiments 2 to 7, which will not be repeated here. the

It can be seen from the above technical solution that in this embodiment, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN, The transmission reliability of customer data can be relatively improved; at the same time, the complexity of data processing at the OTN sending end is relatively reduced; and the processing process of customer data transmission is simplified as a whole. the

In addition, referring to FIG. 12 , the embodiment of the present invention also provides another communication system, including a first node 1210 and a second node 1220 . the

Wherein, the first node 1210 includes: a receiving module 1211 , a delay obtaining module 1212 and a mapping sending module 1213 . The second node 1220 includes: a receiving demapping module 1221 , a delay compensation module 1222 and a sending module 1223 . the

The receiving module 1211 includes: a data acquisition submodule 12111 and a demultiplexing submodule 12112 . the

Among them, the data acquisition sub-module is used to receive customer data of 10 physical channels of CAUI. the

The demultiplexing sub-module 12112 is used to demultiplex the customer data of 10 physical channels of CAUI into customer data of 20 virtual channels. the

The delay obtaining module 1212 is configured to detect the alignment code block in the client data of each virtual channel, so as to obtain the delay information of each virtual channel. the

The mapping sending module 1213 is used to map the customer data of 20 virtual channels by channel, each virtual channel data is mapped to 4 time slots of ODU4, and the delay information of 20 virtual channels is mapped to the overhead area of ODU4 . the

The receiving demapping module 1221 is configured to receive and demap the client data of the 20 virtual channels carried by the 80 time slots of the ODU4, and extract the delay information of the client data of the 20 virtual channels carried by the ODU4 overhead area. the

The delay compensation module 1222 is used to perform delay compensation on the customer data of the 20 virtual channels according to the delay information of the customer data of the 20 virtual channels; Customer data for 10 physical channels for CAUI. the

The sending module 1223 is configured to send the customer data of the CAUI 10 physical channels multiplexed by the delay compensation module 1222 bits. the

In addition, referring to FIG. 13 , the embodiment of the present invention also provides another communication system, including a sending device 1310 and a receiving device 1320 . the

Wherein, the sending device 1310 includes: a receiving module 1311 and a mapping sending module 1312 . The receiving device 1320 includes: a receiving demapping module 1321 , a delay compensation module 1322 and a sending module 1323 . the

The receiving module 1311 is used to receive customer data of 10 physical channels of CAUI. the

The mapping sending module 1322 is used to map the customer data of 10 physical channels of CAUI to 80 time slots of ODU4 and send it

The receiving demapping module 1321 is configured to receive and demap customer data of 10 physical channels of the CAUI carried by 80 time slots of the ODU4. the

The delay compensation module 1322 is used to demultiplex the customer data of 10 physical channels of CAUI into the customer data of 20 virtual channels, and detect the alignment code block in the customer data of each virtual channel to obtain each virtual channel The delay information of the customer data of the 20 virtual channels; the delay compensation of the customer data of the 20 virtual channels is performed according to the delay information of the customer data of the 20 virtual channels; the customer data bits of the 20 virtual channels after the delay compensation are multiplexed into CAUI 10 customer data for physical channels. the

The sending module 1323 is configured to send the customer data of the 10 physical channels of the CAUI multiplexed by the delay compensation module 1222 bits. the

In addition, referring to Figure 14, the embodiment of the present invention also provides a schematic diagram of another implementation of transmitting customer data. The processing process of each module at the sending end is as follows:

The data receiving module receives 100GE CAUI interface data. the

The multi-channel delay monitoring module converts 100GE CAUI data into 100GE virtual channel data, detects alignment code blocks on each virtual channel to obtain delay information between each virtual channel, and sends the delay information to the mapping module. the

The mapping module converts CAUI interface data into 100GE virtual channel data for sub-channel mapping, and maps each virtual channel data to 4 time slots of OPU4. the

In addition, referring to Figure 15, the embodiment of the present invention also provides a schematic diagram of another implementation of transmitting customer data, and the processing process of each module at the receiving end is as follows:

Demapping module, demaps 100GE customer data from ODU4, and extracts delay information

The delay compensation module performs 100GE delay compensation according to the delay compensation information, bit-multiplexes the customer data of the virtual channel and restores the CAUI interface data

The sending module sends 100GE CAUI interface data. the

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention. the

In the foregoing embodiments, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments. The symbols added to the above-mentioned embodiments are only for the convenience of quoting, and there is no distinction between advantages and disadvantages. the

To sum up, in the technical solution of the embodiment of the present invention, the OTN sending end does not perform delay compensation for customer data, but the OTN receiving end performs delay compensation for customer data, which can eliminate possible delays caused by customer data transmission on the OTN , can relatively improve the transmission reliability of customer data; at the same time relatively reduce the complexity of data processing at the OTN sending end; simplify the processing process of customer data transmission as a whole. the

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: ROM, RAM, disk or CD, etc. the

The method, equipment and communication system for transmitting customer data provided by the embodiment of the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used To help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, this specification The content should not be construed as a limitation of the invention. the

Claims (14)

1. A method for transmitting customer data, comprising: Receive the optical channel data unit ODUk, and use the demapping method corresponding to the mapping method adopted by the sending end to demap the ODUk, and obtain the customer data of multiple channels carried by the ODUk, where k is used to indicate the type and bit rate of the ODUk ; Delay compensation for customer data obtained from multiple channels; Send customer data after delay compensation; Wherein, the delay compensation for the acquired customer data of multiple channels includes: If the obtained customer data of multiple channels is the customer data of multiple physical channels, then the customer data of multiple physical channels obtained is demultiplexed into the customer data of multiple virtual channels; According to the alignment code block in the customer data of the channel, the delay information of the customer data of multiple virtual channels is respectively obtained; according to the delay information of the customer data of the multiple virtual channels obtained, the demultiplexed multiple virtual channels Compensate for delays in customer data; If the obtained customer data of multiple channels is the customer data of multiple virtual channels, then obtain the delay information of the customer data of multiple virtual channels respectively; according to the delay information of the obtained customer data of multiple virtual channels, the Delay compensation for customer data of multiple virtual channels. 2. The method according to claim 1, characterized in that, specifically comprising: Receive and demap ODU4, and obtain customer data of 20 virtual channels carried by 80 time slots of ODU4; Obtain the delay information of the customer data of the 20 virtual channels carried by the overhead area of the ODU4 respectively; according to the delay information of the obtained customer data of the 20 virtual channels, perform delay compensation for the obtained customer data of the 20 virtual channels; Send customer data after delay compensation. 3. The method according to claim 1, characterized in that, specifically comprising: Receive and demap ODU4, and obtain customer data of 10 physical channels of the Bagibit connection unit interface carried by ODU4; Demultiplex the obtained customer data of 10 physical channels into customer data of 20 virtual channels; detect the alignment code blocks in the customer data of 20 virtual channels, and obtain the delay information of the customer data of 20 virtual channels respectively ; According to the delay information of the obtained customer data of the 20 virtual channels, delay compensation is performed on the obtained customer data of the 20 virtual channels; Send customer data after delay compensation. 4. The method according to claim 1, characterized in that, specifically comprising: Receive and demap 10 ODU2e, and obtain customer data of 10 physical channels of the Bagibit connection unit interface respectively carried by the 10 ODU2e; Demultiplex the obtained customer data of 10 physical channels into customer data of 20 virtual channels; detect the alignment code blocks in the customer data of 20 virtual channels, and obtain the delay information of the customer data of 20 virtual channels respectively ; According to the delay information of the obtained customer data of the 20 virtual channels, delay compensation is performed on the obtained customer data of the 20 virtual channels; Send customer data after delay compensation. 5. A transport network node, characterized in that it comprises: The receiving analysis module is used to receive the optical channel data unit ODUk, and use the demapping method corresponding to the mapping method adopted by the sending end to demap the ODUk, and obtain the customer data of multiple channels carried by the ODUk, where k is used to represent ODUk type and bit rate; A delay compensation module, configured to demultiplex the customer data of multiple physical channels obtained by the receiving and analyzing module into customer data of multiple virtual channels; detect the alignment word code blocks in the customer data of multiple virtual channels obtained by demultiplexing, and obtain the delay information of the customer data of multiple virtual channels respectively; according to the obtained multiple virtual channels Delay information of customer data, delay compensation for customer data demultiplexed into multiple virtual channels; When the customer data of multiple channels obtained by the receiving analysis module is the customer data of multiple virtual channels, the delay information of the customer data of multiple virtual channels is obtained respectively; according to the delay information of the customer data of multiple virtual channels acquired Time information, performing delay compensation on the customer data of multiple virtual channels obtained by the receiving and analyzing module; The first sending module is configured to send the customer data after the delay compensation is performed by the delay compensation module. 6. The transport network node according to claim 5, characterized in that, The receiving and parsing module is specifically used to receive and demap ODU4, and obtain delay information of client data of 20 virtual channels carried by 80 time slots of ODU4 and client data of 20 virtual channels carried by the overhead area of ODU4; The delay compensation module includes: The delay compensation sub-module is configured to perform delay compensation on the client data of the 20 virtual channels obtained by the receiving and analyzing sub-module according to the delay information of the client data of the 20 virtual channels obtained by the receiving and analyzing module. 7. The transport network node according to claim 5, characterized in that, The receiving and parsing module is specifically used to receive and demap the ODU4, and obtain customer data of 10 physical channels of the Bagibit connection unit interface carried by the ODU4; The delay compensation module includes: The demultiplexing submodule is used to demultiplex the customer data of 10 physical channels obtained by the receiving and analyzing module into customer data of 20 virtual channels; The delay acquisition submodule is used to detect the alignment code blocks in the client data of the 20 virtual channels demultiplexed by the demultiplexing submodule, and obtain the delay information of the client data of the 20 virtual channels respectively; The delay compensation sub-module is further configured to, according to the delay information of the customer data of the 20 virtual channels obtained by the delay acquisition sub-module, perform delay compensation on the acquired client data of the 20 virtual channels. 8. The transport network node according to claim 5, characterized in that, The receiving and parsing module is specifically used to receive and demap 10 ODU2e, and obtain customer data of 10 physical channels of the Bagibit connection unit interface carried by the 10 ODU2e respectively; The delay compensation module includes: The demultiplexing submodule is used to demultiplex the customer data of 10 physical channels obtained by the receiving and analyzing module into customer data of 20 virtual channels; The delay acquisition submodule is used to detect the alignment code blocks in the client data of the 20 virtual channels demultiplexed by the demultiplexing submodule, and obtain the delay information of the client data of the 20 virtual channels respectively; The second delay compensation sub-module is configured to perform delay compensation on the obtained client data of the 20 virtual channels according to the delay information of the client data of the 20 virtual channels obtained by the delay obtaining sub-module. 9. The transport network node according to any one of claims 6 to 8, characterized in that, The receiving and parsing module is also used to receive and demap the ODUk to obtain customer data of 10 mutually independent 10G physical channels carried by the ODUk; The transport network node also includes: The second sending module is used to respectively recover the clock information of the customer data of the 10 mutually independent 10G physical channels obtained by the receiving and analyzing module, and send 10 data according to the clock information of the customer data of the 10 mutually independent 10G physical channels Customer data of 10G physical channel. 10. A communication system, characterized in that, comprising: The first node is used to obtain the client data of multiple channels; the obtained client data of multiple channels is mapped to ODUk and sent, wherein k is used to represent the type and bit rate of ODUk; The second node is configured to receive the ODUk, and use a demapping method corresponding to the mapping method adopted by the first node to demap the ODUk to obtain customer data of multiple physical channels carried by the ODUk; the obtained multiple physical channels The customer data is demultiplexed into customer data of multiple virtual channels; the aligned word code blocks in the customer data of multiple virtual channels that are demultiplexed are detected, and the delay information of customer data of multiple virtual channels is respectively obtained; according to the obtained The delay information of the customer data of the multiple virtual channels, and the delay compensation for the customer data of the multiple virtual channels demultiplexed; send the customer data after the delay compensation; or The second node is used to receive and demap ODUk, and obtain customer data of multiple virtual channels carried by ODUk; respectively obtain delay information of customer data of multiple virtual channels; delay information according to the obtained customer data of multiple virtual channels time information, and perform delay compensation on the obtained customer data of multiple virtual channels; send the customer data after delay compensation. 11. The communication system according to claim 10, characterized in that, The first node is specifically used to obtain customer data of 10 physical channels of the Bagibit connection unit interface; demultiplex the acquired customer data of 10 physical channels into customer data of 20 virtual channels; detect the customer data of 20 virtual channels The alignment word code blocks in the customer data obtain the delay information of the customer data of the 20 virtual channels respectively; the customer data of the 20 virtual channels are mapped to the 80 time slots of ODU4, and the The delay information is mapped to the overhead area of ODU4 and sent. The second node is specifically used to receive and demap ODU4, and obtain the delay information of the client data of 20 virtual channels carried by 80 time slots of ODU4 and the client data of 20 virtual channels carried by the overhead area of ODU4; according to the obtained The delay information of the customer data of the 20 virtual channels, and the delay compensation of the obtained customer data of the 20 virtual channels; the customer data of the compensated 20 virtual channels are multiplexed into the Bagibit connection unit interface 10 customer data of physical channel and send it. 12. The communication system according to claim 10, characterized in that, The first node is specifically used to obtain customer data of 10 physical channels of the Bagibit connection unit interface; map the obtained customer data of 10 physical channels to ODU4 and send it; The second node is specifically used to receive and demap ODU4, obtain customer data of 10 physical channels of the Bagibit connection unit interface carried by ODU4; demultiplex the obtained customer data of 10 physical channels into 20 virtual channels Customer data; detect the alignment code blocks in the customer data of 20 virtual channels, and obtain the delay information of the customer data of the 20 virtual channels respectively; according to the delay information of the customer data of the 20 virtual channels obtained, the obtained The customer data of the 20 virtual channels is delayed; the compensated customer data of the 20 virtual channels is multiplexed into the customer data of the 10 physical channels of the Bagibit connection unit interface and sent. 13. The communication system according to claim 10, characterized in that, The first node is specifically used to obtain customer data of 10 physical channels of the Bagibit connection unit interface; map the obtained customer data of 10 physical channels to ODU2e-10v; split ODU2e-10v into 10 ODU2e and send ; The second node is specifically used to receive and demap 10 ODU2e, obtain customer data of 10 physical channels of the Bagibit connection unit interface carried by the 10 ODU2e respectively; demultiplex the obtained customer data of the 10 physical channels into Customer data of 20 virtual channels; detect the alignment code blocks in the customer data of 20 virtual channels, and obtain the delay information of the customer data of the 20 virtual channels respectively; according to the delay of the customer data of the 20 virtual channels obtained information, and perform delay compensation on the acquired customer data of 20 virtual channels; multiplex the compensated customer data of 20 virtual channels into customer data of 10 physical channels of the Bagibit connection unit interface and send it. 14. The communication system of claim 10, wherein: The first node is specifically used to acquire customer data of 10 physical channels of the Bagibit connection unit interface; map the acquired customer data of 10 physical channels to 10 ODU2e and send them; The second node is specifically used to receive and demap 10 ODU2e, obtain customer data of 10 physical channels of the Bagibit connection unit interface carried by the 10 ODU2e respectively; demultiplex the obtained customer data of the 10 physical channels into Customer data of 20 virtual channels; detect the alignment code blocks in the customer data of 20 virtual channels, and obtain the delay information of the customer data of the 20 virtual channels respectively; according to the delay of the customer data of the 20 virtual channels obtained information, and perform delay compensation on the acquired customer data of 20 virtual channels; multiplex the compensated customer data of 20 virtual channels into customer data of 10 physical channels of the Bagibit connection unit interface and send it.

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