WO2020024721A1

WO2020024721A1 - Service transmission method, device, and computer storage medium

Info

Publication number: WO2020024721A1
Application number: PCT/CN2019/091934
Authority: WO
Inventors: 刘峰; 成剑
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-08-03
Filing date: 2019-06-19
Publication date: 2020-02-06
Also published as: CN110798415B; KR102513755B1; JP7122455B2; JP2021534618A; CN110798415A; KR20210038959A

Abstract

Disclosed in the embodiments of the present application are a service transmission method, a device and a computer storage medium. The method comprises: dicing, according to a preset length, data of a service to be transmitted, so as to obtain at least one data block; packaging each data block separately according to a preset message format to obtain at least one message to be transmitted; parsing each said message, and determining a sending direction of each said message; scheduling said messages with the same sending direction and processing manner in a same service flow, and sending, according to a configured transmission speed, the service flow to an exclusive network interface or an exclusive time slot of a network interface.

Description

Method, equipment and computer storage medium for service transmission

Cross-reference to related applications

This application is based on a Chinese patent application with an application number of 201810880267.2 and an application date of August 03, 2018, and claims the priority of the Chinese patent application. The entire contents of the Chinese patent application are incorporated herein by reference.

Technical field

The present application relates to the field of communication technology, but is not limited to the field of communication technology, and in particular, to a method, a device, and a computer storage medium for service transmission.

Background technique

With the development of communication technology, the three networks of the Internet, cable television network and telecommunication communication network merge with each other, and gradually form a unified network system. In these three networks, the transmission technology of the telecommunication communication network needs to change from the synchronous digital hierarchy (SDH, Synchronous Digital Hierarchy) technology to the Ethernet technology based on packet transmission technology.

For SDH technology, it is a circuit transmission technology. Specifically, a dedicated and exclusive circuit channel is established between two clients to transmit information. Its advantages are short transmission delay time, small delay jitter, and reliability. High, very suitable for the transmission of voice services; but when there is no information transmission between the two clients, as long as the dedicated channel is not revoked, the dedicated circuit channel is still in the exclusive state of the two clients, resulting in It cannot be used by other customers, and the delivery efficiency is low. For packet transmission technology, a message format is used to transmit information between two clients. The specific solution is to establish a virtual transmission channel between the two clients, and the two clients transmit messages through the virtual channel. A virtual channel can be established on a physical entity channel, and all clients share the bandwidth resources of the physical entity channel. When there is no information transmission between the two clients, the bandwidth resources of the virtual transmission channel are shared with other clients, which has good multiplexing characteristics and ensures that bandwidth is not wasted. Therefore, the transmission efficiency is high and the transmission cost is low.

At present, in a triple-play network, there is an uncertain time delay when sending a message, and the jitter caused by the time delay fluctuation. In addition, during the integration of the three networks, when the packet transmission technology is used to transmit the voice service, the above problems will cause the transmission quality of the voice service to decline, and high-quality transmission of the voice service cannot be achieved.

Summary of the invention

The embodiments of the present application are expected to provide a method, a device, and a computer storage medium for service transmission.

The technical solution of this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a method for service transmission. The method includes:

Dicing the data of the service to be transmitted according to a preset length to obtain at least one data block;

Encapsulating each of the data blocks according to a preset message format to obtain at least one message to be transmitted;

Analyze each of the messages to be transmitted separately to determine a sending direction of each of the messages to be transmitted;

The packets to be transmitted with the same sending direction and the same processing mode are scheduled in the same service flow, and the service flow is sent to the exclusive network interface or the exclusive time slot of the network interface according to the set transmission speed.

In a second aspect, an embodiment of the present application provides a method for service transmission. The method includes:

Decapsulating the received transmission message to obtain a data block stream carried by the transmission message;

Reversely decode the data block according to a set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding method;

Recovering the original service data from the bitstream;

Sending the original service data to the client.

In a third aspect, an embodiment of the present application provides a network device, where the network device includes a dicing part, an encapsulating part, a parsing part, a scheduling part, and a first sending part;

The dicing part is configured to diced the data of the service to be transmitted according to a preset length to obtain at least one data block;

The encapsulation part is configured to encapsulate each of the data blocks according to a preset message format, obtain at least one message to be transmitted, and transmit the message to be transmitted to all the data packets at a set transmission speed. Mentioned parsing part;

The parsing section is configured to parse each of the messages to be transmitted separately to determine a sending direction of each of the messages to be transmitted;

The scheduling part is configured to schedule the to-be-transmitted messages in the same sending direction and the same processing mode in the same service flow;

The first sending part is configured to send the service flow to an exclusive network interface or an exclusive time slot in the network interface according to a set transmission speed.

In a fourth aspect, an embodiment of the present application provides a network device, where the network device includes: a decapsulation section, a first recovery section, a second recovery section, and a second sending section; wherein,

The decapsulation part is configured to decapsulate the received transmission message to obtain a data block stream carried by the transmission message;

The first recovery part is configured to reversely decode the data block according to a set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding method;

The second recovery part is configured to recover the original service data from the bitstream;

The second sending part is configured to send the original service data to the client.

In a fifth aspect, an embodiment of the present application provides a network device, where the network device includes a first network interface, a first memory, and a first processor; and the first network interface is configured to communicate with other devices. The receiving and sending of signals during the process of transmitting and receiving information between external network elements; the first memory is configured to store a computer program capable of running on the first processor; the first processor is configured to When the computer program is run, the steps of the method according to the first aspect are performed.

According to a sixth aspect, an embodiment of the present application provides a network device. The network device includes a second network interface, a second memory, and a second processor. The second network interface is configured to communicate with other external devices. During the process of transmitting and receiving information between network elements, the reception and transmission of signals; the second memory is configured to store a computer program capable of running on a second processor; and the second processor is configured to run the When the computer program executes the steps of the method described in the second aspect.

In a seventh aspect, an embodiment of the present application provides a computer storage medium that stores a program for service transmission, and the program for service transmission implements the first aspect or the second aspect when executed by at least one processor. The steps of the method for service transmission are described.

The embodiments of the present application provide a method, a device, and a computer storage medium for service transmission. After the data of the service to be transmitted is cut into blocks according to a uniform preset length, analysis and transmission are performed according to a set transmission speed, thereby achieving The services to be transmitted are transmitted at a stable speed during the transmission process. The delay time is short, the delay fluctuation is small, and the transmission quality of the service is close to that of the SDH network.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a communication network architecture according to an embodiment of the present application; FIG.

2 is a schematic diagram of a message transmission process according to an embodiment of the present application;

3 is a schematic flowchart of a service transmission method according to an embodiment of the present application;

FIG. 4 is a schematic flowchart of a sending end message processing according to an embodiment of the present application; FIG.

FIG. 5 is a schematic diagram of multiple channel selection according to an embodiment of the present application; FIG.

6 is a schematic diagram of forming an OTN frame according to an embodiment of the present application;

7 is a schematic flowchart of another service transmission method according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a destination message processing flow according to an embodiment of the present application; FIG.

9 is a detailed flowchart of a service transmission method according to an embodiment of the present application;

FIG. 10A is a schematic flowchart of a specific example provided by an embodiment of the present application; FIG.

FIG. 10B is a schematic flowchart of another specific example according to an embodiment of the present application; FIG.

10C is a schematic flowchart of still another specific example provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a network device according to an embodiment of the present application; FIG.

FIG. 12 is a schematic structural diagram of another network device according to an embodiment of the present application; FIG.

13 is a schematic diagram of a specific hardware structure of a network device according to an embodiment of the present application;

14 is a schematic structural diagram of still another network device according to an embodiment of the present application;

FIG. 15 is a schematic diagram of a specific hardware structure of another network device according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to FIG. 1, it illustrates a schematic architecture of a communication network 100 capable of applying a packet transmission technology according to an embodiment of the present application. The communication network 100 includes multiple client devices and multiple network node devices. The client devices are Client 1, Client 2, Client 3, and Client 4; and network node devices include Node A, Node B, Node C, Node D, Node E, and Node F, respectively. As shown in FIG. 1, when the client 1 and the client 2 collectively need to transmit information, a virtual transmission channel 1 as shown by a dotted line can be established between the client 1 and the client 2. The transmission channel 1 Pass node A, node B, node C, and node D, respectively. In this transmission channel 1, client 1 and client 2 are called client edge (CE, Customer Edge) devices; node A and node D are called operations because they are connected to client 1 and client 2, respectively. Provider edge (PE, Provider Edge) equipment; and in this transmission channel, node B and node C are only responsible for information data exchange, so they are called operator (P, Provider) equipment. Similarly, when a virtual transmission channel 2 as shown by a dotted line is established between the client 3 and the client 4, for the transmission channel 2, the node A and the node C can be called PE devices, and the node B is called For P devices. For the above two transmission channels, it can be seen from the figure that the transmission channel 1 and the transmission channel 2 share the physical entity channel from node A to node B to node C. Understandably, when there is no message sent between the client 1 and the client 2, the transmission channel 1 is idle and the bandwidth resource is released. At this time, the transmission channel 2 can share the bandwidth resource released by the transmission channel 1. The bandwidth of transmission channel 2 is increased to avoid wasting bandwidth.

It should be noted that the above-mentioned communication network 100 can be applied not only to Ethernet, but also to communication networks based on packet transmission, such as Optical Transmission Network (OTN, Optical Transport Network) and Flexible Ethernet (FlexE, Flexible Ethernet). This is not described in the embodiment of the present application.

Taking Figure 1 as an example, in the process of information transmission, information is usually transmitted in a message mode, and the length of each message is variable, usually 64 bytes to 1518 bytes. When the client 1 has no message to transmit to the client 2, the bandwidth of the transmission channel 1 can be shared with other clients, for example, it can be shared with the transmission channel 2 for use. When client 1 needs to transmit a message to client 2, if transmission channel 2 is being used by client 3 and client 4, then you need to wait for client 3 and client 4 to complete the transmission before using the transmission channel. 1. Therefore, in the process of packet transmission, there will be an uncertain time delay when sending a message, resulting in delay and jitter in the transmission of the message.

For communication equipment, Figure 2 shows the specific flow in the process of message transmission. It can be seen that after parsing and classifying the message received by the physical portal, it can be based on the characteristic information of the message. For example, the message's MAC address, IP address, priority, etc., determine the sending port of the message, queue according to the message exit and priority, such as queue 1, queue 2, ... queue n in the figure, and then wait for scheduled output To the physical exit. It can be seen that the scheduler can call out packets from different queues according to a predetermined scheduling algorithm and send them to the physical outlet for sending. Because the length of each message is different, even if the scheduling algorithm can ensure that the message has a certain output bandwidth, when a message needs to send output, it needs to wait for the previous message to be sent before sending the next message, waiting Time is uncertain, and the uncertainty of delay time also brings delay jitter. Each time a packet passes through a network node device, there are different degrees of delay and jitter. The delay time and delay jitter accumulated when passing through multiple devices are very large, resulting in unstable transmission quality during packet transmission. In the case of high-quality voice services, such as the dedicated line services of large customers such as the power network, military network, and railway network, the quality of the voice service is greatly reduced, and the quality requirements of such dedicated line services cannot be met.

In short, in terms of packet transmission technology, when a client A starts to deliver business messages, if other clients are sending messages, then client A needs to wait for other clients to send the current message. Recalling the bandwidth of the virtual channel causes the client A's message to be sent in a timely manner. Therefore, in the three-network converged network, there is an uncertain time delay when sending the message, and the jitter caused by the time delay fluctuation. When a message transmitted between a pair of clients needs to pass through many intermediate node devices on the network, each time the message passes through an intermediate node device on the network, it will cause different degrees of delay and jitter. After passing through multiple intermediate node devices, it will cause The accumulation of delays and jitters causes serious degradation in service transmission quality. Therefore, during the integration of the three networks, when the packet transmission technology is used to transmit the voice service, the above problems will cause the transmission quality of the voice service to decline, and the high-quality transmission of the voice service cannot be achieved.

The embodiment of the present application proposes the following technical solution based on the network architecture shown in FIG. 1.

Referring to FIG. 3, which illustrates a service transmission method provided by an embodiment of the present application. The method may be applied to a sending PE device that performs service transmission. The method may include:

S301: Divide the data of the service to be transmitted according to a preset length to obtain at least one data block;

S302: Encapsulate each of the data blocks according to a preset message format to obtain at least one message to be transmitted;

S303: Parse each of the messages to be transmitted separately, and determine a sending direction of each of the messages to be transmitted;

S304: Schedule the to-be-transmitted messages with the same sending direction and the same processing method in the same service flow, and send the service flow to the exclusive network interface or the exclusive time slot of the network interface according to the set transmission speed.

For the technical solution shown in FIG. 3, it should be noted that the processing manner may indicate a process of processing data of a service to be transmitted according to steps S301 to S303. It can be seen that after cutting the data of the service to be transmitted according to a uniform preset length, the data is parsed and transmitted according to the set transmission speed. The network interface or the time slot on the network interface is exclusive, so as to achieve It is realized that the service to be transmitted is transmitted at a stable speed during the transmission process, the delay time is short, the delay fluctuation is small, and the transmission quality of the service is close to that of the SDH network.

For the technical solution shown in FIG. 3, in a possible implementation manner, the data of the service to be transmitted includes a bit stream received through a physical interface, and / or message data received through a user interface.

For the above implementation manner, preferably, the data corresponding to the service to be transmitted is a bit stream received through a physical interface, and the data of the service to be transmitted is sliced according to a preset length to obtain at least one data block, including: :

Dicing the bit stream received through the physical interface according to the preset length to obtain at least one data block;

Alternatively, after the bit stream received through the physical interface is encoded according to a set encoding strategy, the encoded bit stream is divided into blocks according to the preset length to obtain at least one data block.

For the foregoing implementation manner, preferably, the data corresponding to the service to be transmitted is message data received through a user interface, and the data of the service to be transmitted is cut into blocks according to a preset length to obtain at least one data block, include:

Encode the message data according to a set encoding strategy;

Adjusting the transmission speed of the encoded message data and buffering the encoded message data;

The buffered encoded message data is cut into blocks according to the preset length to obtain at least one data block.

It should be noted that, taking the transmission channel 1 shown in FIG. 1 as an example, the client 1 is set to send a service to be transmitted to the client 2. The service may be a dedicated line service that needs to ensure transmission quality. The client interface between the client 1 and the client 1 may be a physical interface or a user interface. When the client interface is a physical interface, the client signal and bit stream information are detected on the physical interface, and a fixed-length slice of the client bit stream can be performed. For example, when the customer interface is a 1G Ethernet interface, the customer's physical interface uses 8b / 10b encoding at the PCS layer (that is, 8-bit length is converted to 10-bit length), and the physical coding sublayer (PCS, Physical Coding Sublayer) layer The 10b-encoded bit stream is detected, the bit stream is cut into fixed-length information blocks, and then encapsulated into Ethernet packets. When the customer interface is a 10G, 40G Ethernet interface, the PCS layer encoding format uses 64b / 66b encoding (that is, the 64-bit length is converted to 66-bit length). Based on the PCS detection, the encoded 66-bit length block is extracted. The stream is directly cut into a fixed length according to the 66-bit block stream, and then encapsulated into an Ethernet message.

When the client interface is a user interface, the received message data, such as an Ethernet message, can first encode the Ethernet message (at this time, various encoding methods can be used. Because 64b / 66b encoding is more efficient, Convenient for speed adjustment, 64b / 66b encoding can be used. In the examples of this application, 64b / 66b is used as an example, but it does not mean that the possibility of using other encoding methods is excluded.) The encoded 66-bit block stream is cached. , Speed adjustment while caching. When the buffer depth moves towards the fast space direction, an idle idle block is inserted into the 66-bit block stream (that is, a 66-bit long control block is used to indicate that this information block is an idle information block); when the buffer depth is toward the fast full direction When moving, delete free blocks or other information blocks in the 66-bit block stream, so as to ensure that the buffer will not overflow. Read a 66-bit long block stream from the buffer, cut it into a fixed length, and then encapsulate it into an Ethernet message.

For this implementation, it should be noted that, corresponding to the encoded bit stream or the encoded message data is a 66 bit stream, the preset length is an integer multiple of 66 bits; or,

Corresponding to the encoded bit stream or the encoded message data is a 65-bit stream, the preset length is an integer multiple of 65 bits; or,

Corresponding to the encoded bit stream or the encoded message data is a 10-bit stream, the preset length is an integer multiple of 10 bits.

For the technical solution shown in FIG. 3, in a possible implementation manner, the encapsulating the data block according to a preset message format to obtain a message to be transmitted includes:

Encapsulating each of the data blocks according to an Ethernet message format to obtain at least one Ethernet message to be transmitted.

For the foregoing implementation manner, preferably, encapsulating each of the data blocks according to an Ethernet packet format to obtain at least one Ethernet packet to be transmitted includes:

Encapsulating a multi-protocol label switching (MPLS) protocol label of each data block to the Ethernet packet to be transmitted; wherein the MPLS protocol label of the data block includes at least one of the following items : Pseudowire label, tunnel label, and pseudowire control word.

Encapsulate the ancillary information of each data block to the Ethernet message to be transmitted; wherein the ancillary information of the data block includes at least one of the following: a serial number, a clock information, and a time stamp value.

It should be noted that this embodiment can also use other message formats for encapsulation. Here, only the Ethernet message format is used for description. In the process of encapsulation according to the Ethernet message format, about 30 bytes need to be added ( 6-byte source MAC address, 6-byte destination MAC byte, 2-byte message type, 4-byte pseudo-wire label, 4-byte tunnel label, 4-byte control word, 4-byte Cyclic Redundancy Check (CRC), as shown in Table 1, with 65-bit encoding as an example, the structure of the Ethernet packet is as follows:

Table 1

For Table 1, in order to speed up the parsing speed of the message and quickly determine the transmission channel of the message, MPLS label switching technology is used to implement message scheduling and exchange. A label value is added to the message, which may include fields such as a tunnel label, a pseudo-line label, and a pseudo-line control word. The content part of the message is used to carry a fixed slicing length. Table 1 is for slicing on a 65-bit block stream. The length of the content part is 32 65-bit lengths, that is, 260 bytes (that is, 1 byte is equal to 8 bits). The encapsulated Ethernet packets are aggregated and output at a fixed speed. In MPLS label switching technology, Ethernet packets are encapsulated with tunnel labels and pseudowire labels. Therefore, instead of parsing information such as MAC addresses and IP addresses, label values can be used for packet analysis, which speeds up packet inspection. Table speed to increase processing speed. The label value can determine which client the message belongs to and which channel is transmitted. Therefore, when the data content of the message is cut and encapsulated, one or two layers of labels can be added to the message package, namely the tunnel label and the pseudo-wire label. According to the MPLS protocol, pseudo-wire labels are used to represent customer attributes, tunnel labels represent customer transmission paths, and tunnel labels represent different customers with the same transmission path. Through the label value, the transmission path of each service flow is determined, and an independent network interface or an independent time slot on the network interface is reserved for the client on each node device on the transmission path.

It should be noted that the pseudo-wire control word may include serial number, clock information, time stamp value, etc., and is used to monitor whether a message is lost, recover customer service clock, delay time and other information. When the slice length is larger, the length of the slice content carried in the message is larger, and the encapsulation efficiency is higher. Due to the longer message length, when the packets of two service flows converge in the same direction, if there is no stagger in the scheduling time, when the two service flows arrive at the same time, they can only be output in turn, one service is output first, and the other One is waiting for output. The longer the message, the longer the latter service flow has to wait. The shorter the cut length, the shorter the cut content length carried in the message, and the lower the encapsulation efficiency. However, when two service flow packets converge in the same direction at the same time, the waiting time of the packets waiting for output is shorter. Take the 64b / 66b encoding as an example. When decoding the 64b / 66b encoded service stream, it is necessary to find the boundary of the 66b block length. Because the process of finding the boundary of the 66b block takes a long time, in order to save the encapsulation message and look for 66b In the block boundary process, the fixed length of the dicing block can be an integer multiple of 66b, so that the entire block can be cut according to the 66-bit block. All information bits in the dicing block are complete 66-bit blocks. For the first bit of a 66-bit block, the work of finding the boundary of a 66-bit block is omitted during 64 / 66b decoding. Similarly, if the dicing is performed on a 65-bit block stream, the dicing length may be an integer multiple of 65 bits; if the dicing is performed on a 10-bit block stream, the dicing length may be an integer multiple of 10 bits.

For 10M, 100M, 1G Ethernet interfaces, the physical PHY layer uses 4b / 5b, 8b / 10b and other coding formats. When the physical PHY layer uses 8b / 10b encoding, the 8-bit length is changed to 10-bit length to transmit special function information, and the bandwidth needs to be increased by 25% during transmission. That is, a 10M service flow requires 12.5M transmission bandwidth and the bandwidth of the transmission channel. The utilization rate is only 80%. If cutting is performed on the encoded 10 bits, the encapsulation efficiency of the message is also 90%, and the bandwidth utilization is only 72%. Re-encode the 10b code, convert 8 10b coded blocks into a 65-bit length coded block (for the specific conversion process, see the 8.1.1 chapter of the G.7041 / Y.1303 standard 2005 edition), and convert the 8 10b coded data The stream is converted into a 65-bit block stream and cut on the 65-bit block stream. In this way, the maximum bearer efficiency of the message is increased from 80% to 98.46%. When cutting on a 65-bit fast stream, in order to avoid the need to find the boundary of 65-bit blocks during decoding, the length of the cutting block can be an integer multiple of the length of 65 bits, so that all information bits in the cutting block are complete 65 bits Block, the first bit of the slicing block is the first bit in the first 65b bit block, and the 65b block decoding eliminates the need to find the boundary of the 65b block. In the implementation, the 65-bit block can also be re-encoded into a 66-bit block. In this way, the bit stream before switching is a 66-bit length bit stream, which is consistent with the encoding length of the PCS layer of the 10G and 40G interfaces. When the physical layer uses 4b / 5b encoding, it can be directly cut on the encoded 5-bit length block stream, and the cut length is an integer multiple of 5 bits; two 5-bit code blocks can also be regarded as one 10 Bit-length code blocks are converted into eight 65-bit blocks according to the rule of 8b / 10b to 65b, and cut on the 65-bit block stream.

For the technical solution shown in FIG. 3, a scheduling part may be specifically set in a transmitting PE device of a service transmission, and a message to be transmitted is transmitted to the scheduling part according to a set transmission speed, and the transmission speed must ensure the client's information bandwidth requirements. Regardless of whether the customer's business is under heavy or light load, the encapsulated packets to be transmitted are always sent at a fixed speed. When the service is full, a large amount of customer useful information is carried in the message to be transmitted; when the customer service is lightly loaded, part of the message to be transmitted is customer useful information and part is idle information. The fixed speed is used to send messages to be transmitted to ensure that the speed of the bearer channel is always the same. No matter how the effective information of the customer's business changes, the speed of the bearer channel is always the same, independent of the effective bandwidth of the customer and the speed of other online services.

For the technical solution shown in FIG. 3, the parsing the message to be transmitted and determining the sending direction of the message to be transmitted may specifically be label analysis of all the messages sent from the client interface to determine the message. Transmission channel.

For the technical solution shown in FIG. 3, in a possible implementation manner, the to-be-sent packets with the same sending direction and the same processing method are scheduled in the same service flow, and the service is sent according to a set transmission speed. Streaming to the exclusive network interface or the exclusive time slot of the network interface can include:

Schedule the to-be-transmitted packets with the same sending direction and the same processing method in the same service flow according to the polling scheduling method;

And sending the service flow to an exclusive network interface or an exclusive time slot on the network interface according to the set transmission speed.

For this implementation, it should be noted that because the transmission speed is stable, the packet length is a fixed length, and the dedicated line services in the same sending direction participate in the scheduling, the working speed of the scheduling part can be greater than or equal to the total speed of all participating business flows. The network interface (or time slot of the network interface) that schedules the output is exclusive, and the output speed is stable. Under stable operating conditions, the dedicated line service flow is transmitted at a stable speed in the network transmission path, and the delay time is very short. The delay fluctuation is small, and the transmission quality of the service is close to that of the SDH network.

In addition, optionally, the to-be-transmitted messages with the same sending direction and the same processing mode are scheduled in the same service flow, and the service flow is sent to the exclusive network interface or the exclusive sharing of the network interface according to the set transmission speed. On the time slot, including:

When only one service flow among multiple service flows can be scheduled for output, the service flows that can be scheduled for output are scheduled through multiple selection methods, and sent to the exclusive network interface or network interface according to the set transmission speed Exclusive time slot.

It should be noted that if only one service flow in all messages can be sent to the customer interface, and there is no multiple service flows converging into one service flow, multiple paths can be used instead of the polling scheduling method.

In this embodiment, the foregoing solution is applied to a PE device as a transmitting end. One side of the PE device is a U-side interface and is a customer interface for customer services. The other side is an N-side interface for a network interface. The customer service enters the network system in the PE device, and through the established network channel, it penetrates many devices and is sent to the destination. However, in the entire network architecture, it is very likely that the PE device that is the sending end will also be the P device of other transmission channels, that is, it only sends services from one network interface to another network interface. Therefore, when the sending PE device is also used as the P device of another transmission channel, the foregoing solution in this embodiment may further include:

After receiving at least one physical signal from an exclusive network interface or an exclusive time slot in the network interface, recovering each of said physical signals to message data separately;

Analyze the message data corresponding to each of the physical signals to determine the sending direction of at least one of the message data;

After the packet data with the same sending direction and the same processing mode are scheduled in the same service flow, the service flow is mapped through a service, and then sent through an exclusive network interface or an exclusive time slot of the network interface.

That is to say, under normal circumstances, the sending PE device also assumes the role of other transmission channel P device. Based on this, the technical solution of this embodiment can be shown in FIG. 4, and the packets destined for the network interface are scheduled, After the convergence, a service flow is sent to the network interface. The packets sent to the network interface are sent through the physical interface of the network after service mapping, as shown by the solid line in FIG. 4. The packets destined for the customer interface are scheduled and aggregated to form a service flow and sent to the customer interface, as shown by the dotted line in FIG. 4. Because the customer service is fixed length and sent at a fixed speed after encapsulation, the speed of all leased line services is constant. All leased line services in the same direction are scheduled for output, and the working speed of the scheduling part is greater than or equal to the total speed of all input service flows. In this way, the input service flow is dispatched as soon as it enters the scheduling part. In detail, the scheduling part only needs to use a simple round scheduler to meet the requirements.

For the packets sent to the customer interface, if only one service flow is sent to the customer interface from the network interface and all the packets from all customer interfaces, and there is no multiple service flows converging into one service flow, then it can be A multi-selector is used instead of the scheduler, and one of the multiple service flows is selected and sent to the client interface, as shown in FIG. 5.

For the above solution, the network interface may be a common Ethernet interface, or a FlexE interface or an OTN interface. For the Ethernet interface, the entire network interface is equivalent to only one time slot. For FlexE or OTN interfaces, there are many time slots on the network interface. When the network interface is an ordinary Ethernet interface, the network interface is required to transmit only dedicated line services. The network interface is exclusive and does not transmit other non-dedicated customer services. Long uncertain impact.

When the network interface is a FlexE interface, the scheduled and aggregated service flows are sent to the FlexE network logical interface, and are mapped to FlexE time slots for transmission as flexE clients. In the FlexE interface, the entire FlexE channel is divided into n * 20 time slot slices, and the length of each time slot slice is 66 bits, and the corresponding bandwidth is 5G (bits per second). Each FlexE customer is carried on different time slots and is strictly physically isolated from each other and does not affect each other. Therefore, each FlexE customer transmits at a fixed speed.

When the network interface is an OTN interface, the aggregated sending service flow is sent to the OTN network logical interface, and the customer as the OTN physical interface is mapped to the Optical Channel Payload Unit (OPU, Optical Channel Payload Unit), and the OPU is encapsulated into optical channel data. Unit (ODU, Optical Channel, Data Unit), an ODU is a time slot, and finally processed into OTN frame services for transmission, as shown in Figure 6. Different ODUs are isolated from each other, and the transmission speed is not affected.

After using the service transmission method provided in this embodiment, since the transmission speed of the leased line service is stable and the packet length is a fixed length, the leased line services in the same direction participate in the scheduling so that the network interface (or time slot of the network interface) scheduled for output is unique The output speed is stable. Therefore, under stable operating conditions, the leased line service flow is transmitted at a stable speed in the network transmission path, the delay time is short, the delay fluctuation is small, and the transmission quality of the service is close to the transmission quality of the SDH network.

Referring to FIG. 7, which illustrates a method for service transmission provided in an embodiment of the present application. The method may be applied to a receiving PE device that performs service transmission. The method may include:

S701: Decapsulate the received transmission message to obtain a data block stream carried by the transmission message;

S702: Reverse decode the data block according to a set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding mode;

S703: Restore the original service data from the bitstream.

S704: Send the original service data to the client.

For the technical solution of this embodiment, it should be noted that, after receiving a transmission packet, referring to FIG. 8, by decapsulating, the encapsulation part is stripped off, including the packet destination address, source address, label, CRC check, etc. Field, extract the slice part carried in the message, recover the decoded bit-block code stream, and recover the original customer service output from the code stream block. For example: if the client interface is a 66-bit block stream, send the extracted 66-bit block stream to the physical layer interface and send it out; if the client interface is an 8b / 10 encoded stream, and after 8b / 10 encoding is converted to 65b encoding, the extracted After the 65b code block stream is recovered, the 65b code block is first decoded into a 10b code block, and the 10b code block is sent to the physical layer interface for sending.

Referring to FIG. 9, it shows a process of a service transmission method provided in an embodiment of the present application. The process can be applied to two PE devices in the network architecture shown in FIG. 1, which are a sending PE device A and a destination PE device. B. The process can include:

S901: Device A cuts the data of the service to be transmitted according to a preset length to obtain at least one data block;

S902: Device A encapsulates each of the data blocks according to a preset message format to obtain at least one message to be transmitted.

S903: The device A separately analyzes each of the messages to be transmitted, and determines a sending direction of each of the messages to be transmitted.

S904: Device A schedules the packets to be transmitted in the same sending direction and the same processing mode to the same service flow, and sends the service flow to the exclusive network interface or the exclusive time slot of the network interface according to the set transmission speed;

It should be noted that the above steps S901 to S904 are the sending process of the sending end PE device A for the dedicated line service. For the specific implementation process, refer to the corresponding part in the first embodiment, which is not repeated here.

S905: Device B decapsulates the received transmission message to obtain a data block stream carried by the transmission message;

S906: Device B reversely decodes the data block according to the set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding method;

S907: Device B recovers the original service data from the bit stream.

S908: Device B sends the original service data to the client

It should be noted that the above steps S905 to S908 are the process for receiving the dedicated line service by the PE device A. For the specific implementation process, refer to the corresponding part in the second embodiment, and details are not described herein again.

With regard to the flow shown in FIG. 9, this embodiment also illustrates the specific implementation process of the flow shown in FIG. 9 by using a specific example. It is worth noting that the number of specific examples does not represent a priority relationship or a sequential relationship between the examples, only to distinguish different examples.

Specific example one

Referring to FIG. 10A, taking FlexE as an example, it is assumed that the sending PE device has 4 1G customer services to perform 8b / 10b to 65b transcoding on the bit stream of the PCS layer, and then 65-bit long codes are respectively transmitted. The block is sliced, sliced into a fixed length, and encapsulated into Ethernet packets, carrying MPLS labels, and sent to the polling scheduling part at a fixed rate. After the label analysis, the packets with the same direction and the same processing method are aggregated into a service flow through the scheduling, and are mapped into FlexE time slots as FlexE clients (these time slots are exclusive), and the FlexE interface completes the FlexE service processing. For example, 64/66 encoding, slot mapping, FlexE framing, etc. are sent out.

The P device in the network extracts the services of the corresponding time slot from the FlexE interface, and can directly cross the FlexE time slot and send it to the other FlexE interface time slot, as shown by the dotted line in the P device; it can also The client service is extracted from the time slot, and the client service is recovered. The scheduler dispatches to the corresponding network interface, encodes the message and maps it into the corresponding FlexE slot, and sends it out through the FlexE interface, as shown by the solid line in the P device. .

In the destination PE device, the packet service is recovered from the FlexE interface time slot, and is sent to the corresponding physical interface after scheduling. After decapsulation and bit code block recovery, the client service bit stream is recovered and sent to the client. Four 1G customers have a total speed close to 5G after slicing and encapsulation, which can be transmitted through one FlexE slot.

Specific example two

Referring to FIG. 10B, taking OTN as an example, it is assumed that the sending PE device has two 1G customer services on the PCS layer bit stream, and performs 8b / 10b to 65b code blocks, and then 65-bit code The block is sliced, sliced into a fixed length, and encapsulated into Ethernet packets, carrying MPLS labels, and sent to the polling scheduling part at a fixed rate. After label analysis, packets in the same direction are aggregated into a service flow through scheduling, and processed by the OTN interface as an OTN client, such as OPU mapping, ODU encapsulation, and OTU framing, etc., and sent.

The P device in the network extracts ODU services from the OTN interface, and can directly cross the ODU and send it to the OTU of another OTN interface, as shown by the dotted line in the P device. It is also possible to extract OPU content from the ODU, restore customer services, schedule to the corresponding network interface through the scheduler, map the message to the OPU, encapsulate it into an ODU, and then framing the OTU and send it out via the OTN interface, such as in a P device Shown as a solid line.

In the destination PE device, the ODU service is extracted from the OTN interface, the OPU is extracted, and the message service is resumed. After dispatching, it is sent to the corresponding physical interface. After decapsulation and bit code block recovery, the customer service bit stream is restored and sent to the customer . Two 1G-speed customers, after slicing and packaging, have a total speed close to 2.5G, and can be transmitted through one ODU.

Specific example three

Referring to FIG. 10C, taking ordinary Ethernet as an example, it is assumed that the client service of the sending PE device has 10M, 100M, and 1G customer services on the PCS layer bit stream, and 8b / 10b is converted into 65b code blocks. The 65-bit long code block is sliced, sliced into a fixed length, and then encapsulated into Ethernet packets, carrying MPLS labels, and sent to the polling scheduling part at a fixed rate. After parsing the labels, the packets with the same direction and the same processing method are aggregated into a service flow through scheduling, and sent through the exclusive Ethernet interface. It should be noted that this Ethernet interface only carries one service flow, and does not share the same interface with other service flows.

The P device in the network recovers the customer service from the Ethernet port, dispatches it to the corresponding network interface through the scheduler, and sends it out through the Ethernet interface.

In the destination PE device, the packet is extracted from the Ethernet interface, and after decapsulation and bit code block recovery, the customer service bit stream is recovered and sent to the customer. Three 10M, 100M, and 1G speed customers share a transmission channel that does not affect each other and can be transmitted at high quality without being affected by actual business speed, message length, and network conditions.

Through the description of the above three specific examples, it can be seen that the service transmission method provided in the embodiment of the present application can enable the dedicated line service flow to be transmitted at a stable speed in the network transmission path with a short delay time and small delay fluctuations. The transmission quality of the service is close to the transmission quality of the SDH network.

11, it shows the composition of a network device 110 according to an embodiment of the present application, including: a dicing part 1101, an encapsulating part 1102, a parsing part 1103, a scheduling part 1104, and a first sending part 1105;

The dicing section 1101 is configured to perform dicing on data of a service to be transmitted according to a preset length to obtain at least one data block;

The encapsulating portion 1102 is configured to encapsulate each of the data blocks according to a preset message format, obtain at least one message to be transmitted, and transmit the message to be transmitted to a set transmission speed to Said parsing part;

The parsing section 1103 is configured to parse each of the messages to be transmitted separately to determine a sending direction of each of the messages to be transmitted;

The scheduling section 1104 is configured to schedule the to-be-transmitted messages with the same sending direction and the same processing mode in the same service flow;

The first sending part 1105 is configured to send the service flow to an exclusive network interface or an exclusive time slot in the network interface according to a set transmission speed.

In the above solution, the data corresponding to the service to be transmitted is a bit stream received through a physical interface, and the dicing part 1101 is configured as:

In the above solution, the data corresponding to the service to be transmitted is message data received through a user interface, and the dicing portion 1101 is configured as:

Encode the message data according to a set encoding strategy;

In the above scheme, corresponding to the encoded bit stream or the encoded message data is a 66-bit stream, the preset length is an integer multiple of 66 bits; or,

In the above solution, the encapsulation portion 1102 is configured as:

Encapsulate the multi-protocol label switching MPLS protocol label of each data block into the Ethernet packet to be transmitted; wherein the MPLS protocol label of the data block includes at least one of the following: a pseudo wire label, a tunnel label, and Pseudo-wire control word.

In the above solution, the encapsulation portion 1102 is configured as:

In the above scheme, the scheduling section 1104 is configured as:

According to the polling scheduling method, the packets to be transmitted with the same sending direction and the same processing method are scheduled in the same service flow;

Sending the service flow to an exclusive network interface or an exclusive time slot in the network interface according to the set transmission speed.

In the above scheme, the scheduling section 1104 is configured as:

When only one service flow among multiple service flows can be scheduled for output, the service flows that can be scheduled for output are scheduled through multiple selection methods and sent to the exclusive network interface or the network at a set transmission speed. Exclusive time slot in the interface.

In the above solution, the network device 110 further includes a recovery section 1106 configured to, upon receiving at least one physical signal from an exclusive network interface or an exclusive time slot in the network interface, separate each of the physical signals separately. Restore to message data;

The analysis section 1103 is further configured to analyze message data corresponding to each of the physical signals to determine a sending direction of at least one of the message data;

The scheduling section 1104 is further configured to schedule the packet data with the same sending direction and the same processing method in the same service flow, and then route the service flow through service mapping, and use the exclusive network interface or the exclusive time slot in the network interface. Send on.

Understandably, in this embodiment, the “part” may be a part of a circuit, a part of a processor, a part of a program or software, etc., of course, it may be a unit, a module, or a non-modular.

In addition, each component in this embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional modules.

If the integrated unit is implemented in the form of a software functional module and is not sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of this embodiment is essentially or It is said that a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for making a computer device (can It is a personal computer, a server, or a network device) or a processor (processor) to perform all or part of the steps of the method described in this embodiment. The foregoing storage media include: U disks, mobile hard disks, read only memories (ROM, Read Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical disks, and other media that can store program codes.

Therefore, this embodiment provides a computer storage medium that stores a program for service transmission, and the method for implementing the service transmission according to the first embodiment is implemented when the service transmission program is executed by at least one processor. step.

Based on the network device 110 and the computer storage medium described above, referring to FIG. 13, it shows a specific hardware structure of a network device 110 according to an embodiment of the present application, which may include: a first network interface 1301, a first memory 1302, and a first Processor 1303; the various components are coupled together by a bus system 1304. It can be understood that the bus system 1304 is used to implement connection and communication between these components. The bus system 1304 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, various buses are marked as the bus system 1304 in FIG. 13. The first network interface 1301 is configured to receive and send signals during a process of transmitting and receiving information with other external network elements.

A first memory 1302 configured to store a computer program capable of running on a first processor 1303;

The first processor 1303 is configured to, when running the computer program, execute:

It can be understood that the first memory 1302 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both a volatile and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) And direct memory bus random access memory (Direct RAMbus RAM, DRRAM). The first memory 1302 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

The first processor 1303 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by using hardware integrated logic circuits or instructions in the form of software in the first processor 1303. The above-mentioned first processor 1303 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA). Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in the first memory 1302, and the first processor 1303 reads the information in the first memory 1302 and completes the steps of the foregoing method in combination with its hardware.

It can be understood that the embodiments described herein may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSP), digital signal processing devices (DSPD), programmable Logic device (Programmable Logic Device, PLD), Field Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described in this application Electronic unit or combination thereof.

For software implementation, the techniques described herein can be implemented through modules (e.g., procedures, functions, etc.) that perform the functions described herein. Software codes may be stored in a memory and executed by a processor. The memory may be implemented in the processor or external to the processor.

Specifically, when the first processor 1303 in the network device 110 is further configured to execute a computer program, the first processor 1303 executes the method steps described in the first embodiment, and details are not described herein again.

Referring to FIG. 14, which shows the composition of a network device 140 provided in an embodiment of the present application, including: a decapsulation section 1401, a first recovery section 1402, a second recovery section 1403, and a second sending section 1404;

The decapsulating section 1401 is configured to decapsulate the received transmission message to obtain a data block stream carried by the transmission message;

The first recovery part 1402 is configured to reversely decode the data block according to a set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding method;

The second recovery part 1403 is configured to recover the original service data from the bitstream;

The second sending section 1404 is configured to send the original service data to the client.

In addition, this embodiment provides a computer storage medium that stores a program for service transmission. When the program for service transmission is executed by at least one processor, the steps of the method described in Embodiment 2 are implemented. For the specific description of the computer storage medium, refer to the description in the fourth embodiment, which is not repeated here.

Based on the foregoing network device 140 and computer storage medium, referring to FIG. 15, which illustrates a specific hardware structure of a network device 140 provided in an embodiment of the present application, which may include: a second network interface 1501, a second memory 1502, and a second Processor 1503; the various components are coupled together by a bus system 1504. It can be understood that the bus system 1504 is used to implement connection and communication between these components. The bus system 1504 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, various buses are marked as the bus system 1504 in FIG. 15. among them,

The second network interface 1501 is configured to receive and send signals during a process of sending and receiving information with other external network elements.

A second memory 1502 configured to store a computer program capable of running on the second processor 1503;

The second processor 1503 is configured to, when running the computer program, execute:

Recovering the original service data from the bitstream;

Sending the original service data to the client.

Understandably, the components of the specific hardware structure of the network device 140 in this embodiment are similar to the corresponding portions in the fourth embodiment, and details are not described herein.

Specifically, the second processor 1503 in the network device 140 is further configured to execute the method steps described in the foregoing second embodiment when running the computer program, and details are not described herein again.

Based on the foregoing embodiments, an embodiment of the present application further provides a system for service transmission. The system may include the network device 110 described in the fourth embodiment and the network device 140 described in the fifth embodiment. It should be noted that the system can implement the process steps described in the third embodiment, and details are not described herein again.

It should be noted that the technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A method for service transmission, the method includes:

Dicing the data of the service to be transmitted according to a preset length to obtain at least one data block;

Encapsulating each of the data blocks according to a preset message format to obtain at least one message to be transmitted;

Analyze each of the messages to be transmitted separately to determine a sending direction of each of the messages to be transmitted;

The packets to be transmitted with the same sending direction and the same processing mode are scheduled in the same service flow, and the service flow is sent to the exclusive network interface or the exclusive time slot of the network interface according to the set transmission speed.
The method according to claim 1, wherein the data corresponding to the service to be transmitted is a bit stream received through a physical interface, and the data of the service to be transmitted is sliced according to a preset length to obtain at least one data Blocks, including:

Dicing the bit stream received through the physical interface according to the preset length to obtain at least one data block;

Alternatively, after the bit stream received through the physical interface is encoded according to a set encoding strategy, the encoded bit stream is divided into blocks according to the preset length to obtain at least one data block.
The method according to claim 1, wherein the data corresponding to the service to be transmitted is message data received through a user interface, and the data of the service to be transmitted is sliced according to a preset length to obtain at least one Data blocks, including:

Encode the message data according to a set encoding strategy;

Adjusting the transmission speed of the encoded message data and buffering the encoded message data;

The buffered encoded message data is sliced according to the preset length to obtain at least one data block.
The method according to claim 2 or 3, wherein, corresponding to the encoded bit stream or the encoded message data is a 66 bit stream, the preset length is an integer multiple of 66 bits; or ,

Corresponding to the encoded bit stream or the encoded message data is a 65-bit stream, the preset length is an integer multiple of 65 bits; or,

Corresponding to the encoded bit stream or the encoded message data is a 10-bit stream, the preset length is an integer multiple of 10 bits.
The method according to claim 1, wherein the encapsulating each of the data blocks according to a preset message format to obtain at least one message to be transmitted comprises:

Encapsulating each of the data blocks according to an Ethernet message format to obtain at least one Ethernet message to be transmitted.
The method according to claim 5, wherein each encapsulating each of the data blocks according to an Ethernet message format to obtain at least one Ethernet message to be transmitted comprises:

Encapsulate the multi-protocol label switching MPLS protocol label of each data block into the Ethernet packet to be transmitted; wherein the MPLS protocol label of the data block includes at least one of the following: a pseudo wire label, a tunnel label, and Pseudo-wire control word.
The method according to claim 5, wherein the encapsulating each of the data blocks according to an Ethernet message format to obtain at least one Ethernet message to be transmitted comprises:

Encapsulate the ancillary information of each data block to the Ethernet message to be transmitted; wherein the ancillary information of the data block includes at least one of the following: a serial number, a clock information, and a time stamp value.
The method according to claim 1, wherein the to-be-transmitted messages with the same sending direction and the same processing mode are scheduled in the same service flow, and the service flow is sent to an exclusive network interface or at a set transmission speed. The exclusive time slot of the network interface includes:

Schedule the to-be-transmitted packets with the same sending direction and the same processing method in the same service flow according to the polling scheduling method;

Sending the service flow to an exclusive network interface or an exclusive time slot in the network interface according to the set transmission speed.
The method according to claim 1, wherein the to-be-transmitted messages with the same sending direction and the same processing mode are scheduled in the same service flow, and the service flow is sent to an exclusive network interface or at a set transmission speed. The exclusive time slot of the network interface includes:

When only one service flow among multiple service flows can be scheduled for output, the service flows that can be scheduled for output are scheduled through multiple selection methods, and sent to the exclusive network interface or network interface according to the set transmission speed Exclusive time slot.
The method according to any one of claims 1 to 9, wherein the method further comprises:

After receiving at least one physical signal from an exclusive network interface or an exclusive time slot in the network interface, recovering each of said physical signals to message data separately;

Analyze the message data corresponding to each of the physical signals to determine the sending direction of at least one of the message data;

After the packet data with the same sending direction and the same processing method are scheduled in the same service flow, the service flow is mapped through a service, and then sent through an exclusive network interface or an exclusive time slot in the network interface.
A method for service transmission, wherein the method includes:

Decapsulating the received transmission message to obtain a data block stream carried by the transmission message;

Reversely decode the data block according to a set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding method;

Recovering the original service data from the bitstream;

Sending the original service data to the client.
A network device, wherein the network device includes a dicing part, an encapsulating part, a parsing part, a scheduling part, and a first sending part; wherein,

The dicing part is configured to diced the data of the service to be transmitted according to a preset length to obtain at least one data block;

The encapsulation part is configured to encapsulate each of the data blocks according to a preset message format, obtain at least one message to be transmitted, and transmit the message to be transmitted to all the data packets at a set transmission speed. Mentioned parsing part;

The parsing section is configured to parse each of the messages to be transmitted separately to determine a sending direction of each of the messages to be transmitted;

The scheduling part is configured to schedule the to-be-transmitted messages in the same sending direction and the same processing mode in the same service flow;

The first sending part is configured to send the service flow to an exclusive network interface or an exclusive time slot in the network interface according to a set transmission speed.
The network device according to claim 12, wherein the data corresponding to the service to be transmitted is a bit stream received through a physical interface, and the dicing portion is configured as:

Dicing the bit stream received through the physical interface according to the preset length to obtain at least one data block;

Alternatively, after the bit stream received through the physical interface is encoded according to a set encoding strategy, the encoded bit stream is divided into blocks according to the preset length to obtain at least one data block.
The network device according to claim 12, wherein the data corresponding to the service to be transmitted is message data received through a user interface, and the cutting portion is configured to:

Encode the message data according to a set encoding strategy;

Adjusting the transmission speed of the encoded message data and buffering the encoded message data;

The buffered encoded message data is cut into blocks according to the preset length to obtain at least one data block.
The network device according to claim 13 or 14, wherein, corresponding to the encoded bit stream or the encoded message data is a 66 bit stream, the preset length is an integer multiple of 66 bits; or,

Corresponding to the encoded bit stream or the encoded message data is a 65-bit stream, the preset length is an integer multiple of 65 bits; or,

Corresponding to the encoded bit stream or the encoded message data is a 10-bit stream, the preset length is an integer multiple of 10 bits.
The network device according to claim 12, wherein the encapsulation part is configured to:

Encapsulating each of the data blocks according to an Ethernet message format to obtain at least one Ethernet message to be transmitted.
The network device according to claim 16, wherein the encapsulation part is configured to:

Encapsulate the multi-protocol label switching MPLS protocol label of each data block into the Ethernet packet to be transmitted; wherein the MPLS protocol label of the data block includes at least one of the following: a pseudo wire label, a tunnel label, and Pseudo-wire control word.
The network device according to claim 16, wherein the encapsulation part is configured to:

Encapsulate the ancillary information of each data block to the Ethernet message to be transmitted; wherein the ancillary information of the data block includes at least one of the following: a serial number, a clock information, and a time stamp value.
The network device according to claim 12, wherein the scheduling section is configured to:

According to the polling scheduling method, the packets to be transmitted with the same sending direction and the same processing method are scheduled in the same service flow;

Sending the service flow to an exclusive network interface or an exclusive time slot in the network interface according to the set transmission speed.
The network device according to claim 12, wherein the scheduling section is configured to:

When only one service flow among multiple service flows can be scheduled for output, the service flows that can be scheduled for output are scheduled through multiple selection methods and sent to the exclusive network interface or the network at a set transmission speed. Exclusive time slot in the interface.
The network device according to any one of claims 12 to 20, further comprising:

A restoring part, configured to, after receiving at least one physical signal from an exclusive network interface or an exclusive time slot in the network interface, restore each of the physical signals to message data separately;

The parsing section is further configured to parse message data corresponding to each of the physical signals to determine a sending direction of at least one of the message data;

The scheduling part is further configured to schedule the packet data with the same sending direction and the same processing method in the same service flow, and then the service flow is mapped through a service and performed on a dedicated network interface or a dedicated time slot on the network interface. send.
A network device, wherein the network device includes: a decapsulation section, a first recovery section, a second recovery section, and a second sending section; wherein,

The decapsulation part is configured to decapsulate the received transmission message to obtain a data block stream carried by the transmission message;

The first recovery part is configured to reversely decode the data block according to a set encoding recovery strategy to obtain a bit stream corresponding to the original service data encoding method;

The second recovery part is configured to recover the original service data from the bitstream;

The second sending part is configured to send the original service data to the client.
A network device, wherein the network device includes a first network interface, a first memory, and a first processor; wherein the first network interface is configured to send and receive information to and from other external network elements Receiving and sending signals; the first memory configured to store a computer program capable of running on the first processor; the first processor configured to execute claims when the computer program is run Steps of the method according to any one of 1 to 10.
A network device, wherein the network device includes: a second network interface, a second memory, and a second processor; wherein the second network interface is configured to perform information transmission and reception processes with other external network elements Receiving and transmitting signals; the second memory configured to store a computer program capable of running on a second processor; the second processor configured to execute claim 11 when the computer program is run Steps of the method.
A computer storage medium storing a program for service transmission, and the method for implementing service transmission according to any one of claims 1 to 10 or claim 11 when the service transmission program is executed by at least one processor A step of.